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6,824	Carl Sagan	Carl Edward Sagan (/ˈseɪɡən/; SAY-gən; November 9, 1934 – December 20, 1996) was an American astronomer and science communicator. His best known scientific contribution is his research on the possibility of extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by exposure to light. He assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, which were universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. He argued in favor of the hypothesis, which has since been accepted, that the high surface temperatures of Venus are the result of the greenhouse effect. Initially an assistant professor at Harvard, Sagan later moved to Cornell, where he spent most of his career. He published more than 600 scientific papers and articles and was author, co-author or editor of more than 20 books. He wrote many popular science books, such as The Dragons of Eden, Broca's Brain, Pale Blue Dot and The Demon-Haunted World. He also co-wrote and narrated the award-winning 1980 television series Cosmos: A Personal Voyage, which became the most widely watched series in the history of American public television: Cosmos has been seen by at least 500 million people in 60 countries. A book, also called Cosmos, was published to accompany the series. Sagan also wrote a science-fiction novel, published in 1985, called Contact, which became the basis for a 1997 film of the same name. His papers, comprising 595,000 items, are archived in the Library of Congress. Sagan was a popular public advocate of skeptical scientific inquiry and the scientific method; he pioneered the field of exobiology and promoted the search for extra-terrestrial intelligent life (SETI). He spent most of his career as a professor of astronomy at Cornell University, where he directed the Laboratory for Planetary Studies. Sagan and his works received numerous awards and honors, including the NASA Distinguished Public Service Medal, the National Academy of Sciences Public Welfare Medal, the Pulitzer Prize for General Non-Fiction (for his book The Dragons of Eden), and (for Cosmos: A Personal Voyage), two Emmy Awards, the Peabody Award, and the Hugo Award. He married three times and had five children. After developing myelodysplasia, Sagan died of pneumonia at the age of 62 on December 20, 1996. Carl Edward Sagan was born in the Bensonhurst neighborhood of New York City's Brooklyn borough on November 9, 1934. His mother, Rachel Molly Gruber, was a housewife from New York City; his father, Samuel Sagan, was a Ukrainian garment worker who emigrated from Kamianets-Podilskyi (which was then in the Russian Empire). Sagan was named in honor of his maternal grandmother, Chaiya Clara, who had died while giving birth to her second child; she was, in Sagan's words, "the mother she [Rachel] never knew." Sagan's maternal grandfather later married a woman named Rose, whom Sagan's sister Carol would later say was "never accepted" as Rachel's mother because Rachel "knew she [Rose] wasn't her birth mother." Sagan's family lived in a modest apartment in Bensonhurst. He later discussed his family being Reform Jews, the most liberal of Judaism's four main branches. He and his sister agreed that their father was not especially religious, but that their mother "definitely believed in God, and was active in the temple [...] and served only kosher meat." During the worst years of the Depression, his father worked as a movie theater usher. According to biographer Keay Davidson, Sagan experienced a kind of "inner war" as a result of his close relationship with both of his parents, who were in many ways "opposites." He traced his later analytical urges to his mother, a woman who had been extremely poor as a child in New York City during World War I and the 1920s. As a young woman, she had had intellectual ambitions, but they were sabotaged by her poverty, her status as a woman and a wife, and her Jewish ethnicity. Davidson suggested that this is why she "worshipped her only son, Carl" because "he would fulfill her unfulfilled dreams." Sagan believed that he got his sense of wonder from his father, who spent his free time giving apples to the poor or helping soothing tensions between employees and management within New York City's garment industry. Although awed by his son's intellectual abilities, Sagan's father took his inquisitiveness in stride and saw it as part of growing up. Later, during his career, Sagan would draw on his childhood memories to illustrate scientific points as he did in his book Shadows of Forgotten Ancestors. Describing his parents' influence on his later thinking, Sagan said: "My parents were not scientists. They knew almost nothing about science. But in introducing me simultaneously to skepticism and to wonder, they taught me the two uneasily cohabiting modes of thought that are central to the scientific method." He recalled that a defining moment in his development was at age four, when his parents took him to see the exhibits at the 1939 New York World's Fair. He later described his memories of several exhibits there. One was a moving map in the America of Tomorrow exhibit, which he said "showed beautiful highways and cloverleaves and little General Motors cars all carrying people to skyscrapers, buildings with lovely spires, flying buttresses—and it looked great!" Another was a flashlight shining on a photoelectric cell, which created a crackling sound, and another showed how the sound from a tuning fork became a wave on an oscilloscope. He also saw an exhibit of the then-nascent medium known as television. Referring to that exhibit, he later wrote: "Plainly, the world held wonders of a kind I had never guessed. How could a tone become a picture and light become a noise?" Sagan also saw one of the Fair's most publicized events: the burial of a time capsule at Flushing Meadows, which contained mementos of the 1930s to be recovered by Earth's descendants in a future millennium. Davidson wrote that this "thrilled Carl." As an adult, inspired by his memories of the World's Fair, Sagan and his colleagues would create similar time capsules to be sent out into the galaxy: the Pioneer plaque and the Voyager Golden Record précis. During World War II, Sagan's family worried about the fate of their European relatives. Sagan, however, was generally unaware of the details of the ongoing war. He wrote, "Sure, we had relatives who were caught up in the Holocaust. Hitler was not a popular fellow in our household... but on the other hand, I was fairly insulated from the horrors of the war." His sister, Carol, said that their mother "above all wanted to protect Carl... she had an extraordinarily difficult time dealing with World War II and the Holocaust." Sagan's book The Demon-Haunted World (1996) included his memories of this conflicted period, when his family dealt with the realities of the war in Europe but tried to prevent it from undermining his optimistic spirit. Soon after entering elementary school, Sagan began to express a strong inquisitiveness about nature. He recalled taking his first trips to the public library alone, at the age of five, when his mother got him a library card. He wanted to learn what stars were, since none of his friends or their parents could give him a clear answer: "I went to the librarian and asked for a book about stars [...] and the answer was stunning. It was that the Sun was a star but really close. The stars were suns, but so far away they were just little points of light. The scale of the universe suddenly opened up to me. It was a kind of religious experience. There was a magnificence to it, a grandeur, a scale which has never left me. Never ever left me." At about age six or seven, he and a close friend took trips to the American Museum of Natural History in Manhattan. While there, they went to the Hayden Planetarium and walked around the museum's exhibits of space objects, such as meteorites, and displays of dinosaurs and animals in natural settings. He wrote, "I was transfixed by the dioramas—lifelike representations of animals and their habitats all over the world. Penguins on the dimly lit Antarctic ice [...] a family of gorillas, the male beating his chest [...] an American grizzly bear standing on his hind legs, ten or twelve feet tall, and staring me right in the eye." Sagan's parents helped nurture his growing interest in science by buying him chemistry sets and reading materials. However, his interest in space was his primary focus, especially after reading sci-fi stories by writers such as H. G. Wells and Edgar Rice Burroughs, which stirred his imagination about the possibility of life on other planets such as Mars. According to biographer Ray Spangenburg, Sagan's early years of trying to understand the mysteries of the planets became a "driving force in his life, a continual spark to his intellect, and a quest that would never be forgotten." In 1947, Sagan discovered the magazine Astounding Science Fiction, which introduced him to more hard science fiction speculations than those in Burroughs' novels. That same year, a mass hysteria developed about the possibility that extraterrestrial visitors had arrived in flying saucers, and the young Sagan joined in the speculation that the flying "discs" people reported seeing in the sky might be alien spaceships. Sagan attended David A. Boody Junior High School in his native Bensonhurst and had his bar mitzvah when he turned 13. In 1948, when he was 14, his father's work took the family to the older semi-industrial town of Rahway, New Jersey, where he attended Rahway High School. He was a straight-A student but was bored because his classes did not challenge him and his teachers did not inspire him. His teachers realized this and tried to convince his parents to send him to a private school, with an administrator telling them, "This kid ought to go to a school for gifted children, he has something really remarkable." However, his parents could not afford to do so. Sagan became president of the school's chemistry club, and set up his own laboratory at home. He taught himself about molecules by making cardboard cutouts to help him visualize how they were formed: "I found that about as interesting as doing [chemical] experiments." He was mostly interested in astronomy, learning about it in his spare time. In his junior year of high school, he discovered that professional astronomers were paid for doing something he always enjoyed, and decided on astronomy as a career goal: "That was a splendid day—when I began to suspect that if I tried hard I could do astronomy full-time, not just part-time." Sagan graduated from Rahway High School in 1951. Before the end of high school, Sagan entered an essay writing contest in which he explored the idea that human contact with advanced life forms from another planet might be as disastrous for people on Earth as Native Americans' first contact with Europeans had been for Native Americans. The subject was considered controversial, but his rhetorical skill won over the judges and they awarded him first prize. When he was about to graduate from high school, his classmates voted him "most likely to succeed" and put him in line to be valedictorian. He attended the University of Chicago because, despite his excellent high school grades, it was one of the very few colleges he had applied to that would consider accepting a 16-year-old. Its chancellor, Robert Maynard Hutchins, had recently retooled the undergraduate College of the University of Chicago into an "ideal meritocracy" built on Great Books, Socratic dialogue, comprehensive examinations, and early entrance to college with no age requirement. As an honors-program undergraduate, Sagan worked in the laboratory of geneticist H. J. Muller and wrote a thesis on the origins of life with physical chemist Harold Urey. He also joined the Ryerson Astronomical Society. In 1954, he was awarded a Bachelor of Arts with general and special honors in what he quipped was "nothing." In 1955, he earned a Bachelor of Science in physics. He went on to do graduate work at the University of Chicago, earning a Master of Science in physics in 1956 and a Doctor of Philosophy in astronomy and astrophysics in 1960. His doctoral thesis, submitted to the Department of Astronomy and Astrophysics, was entitled Physical Studies of the Planets. During his graduate studies, he used the summer months to work with planetary scientist Gerard Kuiper, who was his dissertation director, as well as physicist George Gamow and chemist Melvin Calvin. The title of Sagan's dissertation reflected interests he had in common with Kuiper, who had been president of the International Astronomical Union's commission on "Physical Studies of Planets and Satellites" throughout the 1950s. In 1958, Sagan and Kuiper worked on the classified military Project A119, a secret U.S. Air Force plan to detonate a nuclear warhead on the Moon and document its effects. Sagan had a Top Secret clearance at the Air Force and a Secret clearance with NASA. In 1999, an article published in the journal Nature revealed that Sagan had included the classified titles of two Project A119 papers in his 1959 application for a scholarship to University of California, Berkeley. A follow-up letter to the journal by project leader Leonard Reiffel confirmed Sagan's security leak. From 1960 to 1962 Sagan was a Miller Fellow at the University of California, Berkeley. Meanwhile, he published an article in 1961 in the journal Science on the atmosphere of Venus, while also working with NASA's Mariner 2 team, and served as a "Planetary Sciences Consultant" to the RAND Corporation. After the publication of Sagan's Science article, in 1961 Harvard University astronomers Fred Whipple and Donald Menzel offered Sagan the opportunity to give a colloquium at Harvard and subsequently offered him a lecturer position at the institution. Sagan instead asked to be made an assistant professor, and eventually Whipple and Menzel were able to convince Harvard to offer Sagan the assistant professor position he requested. Sagan lectured, performed research, and advised graduate students at the institution from 1963 until 1968, as well as working at the Smithsonian Astrophysical Observatory, also located in Cambridge, Massachusetts. In 1968, Sagan was denied academic tenure at Harvard. He later indicated that the decision was very unexpected. The denial has been blamed on several factors, including that he focused his interests too broadly across a number of areas (while the norm in academia is to become a renowned expert in a narrow specialty), and perhaps because of his well-publicized scientific advocacy, which some scientists perceived as borrowing the ideas of others for little more than self-promotion. An advisor from his years as an undergraduate student, Harold Urey, wrote a letter to the tenure committee recommending strongly against tenure for Sagan. Science is more than a body of knowledge; it is a way of thinking. I have a foreboding of an America in my children's or grandchildren's time – when the United States is a service and information economy; when nearly all the key manufacturing industries have slipped away to other countries; when awesome technological powers are in the hands of a very few, and no one representing the public interest can even grasp the issues; when the people have lost the ability to set their own agendas or knowledgeably question those in authority; when, clutching our crystals and nervously consulting our horoscopes, our critical faculties in decline, unable to distinguish between what feels good and what's true, we slide, almost without noticing, back into superstition and darkness... The dumbing down of America is most evident in the slow decay of substantive content in the enormously influential media, the 30 second sound bites (now down to 10 seconds or less), lowest common denominator programming, credulous presentations on pseudoscience and superstition, but especially a kind of celebration of ignorance. Carl Sagan, from Demon-Haunted World (1995) Long before the ill-fated tenure process, Cornell University astronomer Thomas Gold had courted Sagan to move to Ithaca, New York, and join the recently-hired astronomer Frank Drake amongst the faculty at Cornell. Following the denial of tenure from Harvard, Sagan accepted Gold's offer and remained a faculty member at Cornell for nearly 30 years until his death in 1996. Unlike Harvard, the smaller and more laid-back astronomy department at Cornell welcomed Sagan's growing celebrity status. Following two years as an associate professor, Sagan became a full professor at Cornell in 1970 and directed the Laboratory for Planetary Studies there. From 1972 to 1981, he was associate director of the Center for Radiophysics and Space Research (CRSR) at Cornell. In 1976, he became the David Duncan Professor of Astronomy and Space Sciences, a position he held for the remainder of his life. Sagan was associated with the U.S. space program from its inception. From the 1950s onward, he worked as an advisor to NASA, where one of his duties included briefing the Apollo astronauts before their flights to the Moon. Sagan contributed to many of the robotic spacecraft missions that explored the Solar System, arranging experiments on many of the expeditions. Sagan assembled the first physical message that was sent into space: a gold-plated plaque, attached to the space probe Pioneer 10, launched in 1972. Pioneer 11, also carrying another copy of the plaque, was launched the following year. He continued to refine his designs; the most elaborate message he helped to develop and assemble was the Voyager Golden Record, which was sent out with the Voyager space probes in 1977. Sagan often challenged the decisions to fund the Space Shuttle and the International Space Station at the expense of further robotic missions. Former student David Morrison described Sagan as "an 'idea person' and a master of intuitive physical arguments and 'back of the envelope' calculations", and Gerard Kuiper said that "Some persons work best in specializing on a major program in the laboratory; others are best in liaison between sciences. Dr. Sagan belongs in the latter group." Sagan's contributions were central to the discovery of the high surface temperatures of the planet Venus. In the early 1960s no one knew for certain the basic conditions of Venus' surface, and Sagan listed the possibilities in a report later depicted for popularization in a Time Life book Planets. His own view was that Venus was dry and very hot as opposed to the balmy paradise others had imagined. He had investigated radio waves from Venus and concluded that there was a surface temperature of 500 °C (900 °F). As a visiting scientist to NASA's Jet Propulsion Laboratory, he contributed to the first Mariner missions to Venus, working on the design and management of the project. Mariner 2 confirmed his conclusions on the surface conditions of Venus in 1962. Sagan was among the first to hypothesize that Saturn's moon Titan might possess oceans of liquid compounds on its surface and that Jupiter's moon Europa might possess subsurface oceans of water. This would make Europa potentially habitable. Europa's subsurface ocean of water was later indirectly confirmed by the spacecraft Galileo. The mystery of Titan's reddish haze was also solved with Sagan's help. The reddish haze was revealed to be due to complex organic molecules constantly raining down onto Titan's surface. Sagan further contributed insights regarding the atmospheres of Venus and Jupiter, as well as seasonal changes on Mars. He also perceived global warming as a growing, man-made danger and likened it to the natural development of Venus into a hot, life-hostile planet through a kind of runaway greenhouse effect. He testified to the US Congress in 1985 that the greenhouse effect would change the earth's climate system. Sagan and his Cornell colleague Edwin Ernest Salpeter speculated about life in Jupiter's clouds, given the planet's dense atmospheric composition rich in organic molecules. He studied the observed color variations on Mars' surface and concluded that they were not seasonal or vegetational changes as most believed, but shifts in surface dust caused by windstorms. Sagan is also known for his research on the possibilities of extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. He is also the 1994 recipient of the Public Welfare Medal, the highest award of the National Academy of Sciences for "distinguished contributions in the application of science to the public welfare." He was denied membership in the academy, reportedly because his media activities made him unpopular with many other scientists. As of 2017, Sagan is the most cited SETI scientist and one of the most cited planetary scientists. In 1980 Sagan co-wrote and narrated the award-winning 13-part PBS television series Cosmos: A Personal Voyage, which became the most widely watched series in the history of American public television until 1990. The show has been seen by at least 500 million people across 60 countries. The book, Cosmos, written by Sagan, was published to accompany the series. Because of his earlier popularity as a science writer from his best-selling books, including The Dragons of Eden, which won him a Pulitzer Prize in 1977, he was asked to write and narrate the show. It was targeted to a general audience of viewers, whom Sagan felt had lost interest in science, partly due to a stifled educational system. Each of the 13 episodes was created to focus on a particular subject or person, thereby demonstrating the synergy of the universe. They covered a wide range of scientific subjects including the origin of life and a perspective of humans' place on Earth. The show won an Emmy, along with a Peabody Award, and transformed Sagan from an obscure astronomer into a pop-culture icon. Time magazine ran a cover story about Sagan soon after the show broadcast, referring to him as "creator, chief writer and host-narrator of the show." In 2000, "Cosmos" was released on a remastered set of DVDs. After Cosmos aired, Sagan became associated with the catchphrase "billions and billions", although he never actually used the phrase in the Cosmos series. He rather used the term "billions upon billions." Richard Feynman, a precursor to Sagan, used the phrase "billions and billions" many times in his "red books." However, Sagan's frequent use of the word billions and distinctive delivery emphasizing the "b" (which he did intentionally, in place of more cumbersome alternatives such as "billions with a 'b'", in order to distinguish the word from "millions") made him a favorite target of comic performers, including Johnny Carson, Gary Kroeger, Mike Myers, Bronson Pinchot, Penn Jillette, Harry Shearer, and others. Frank Zappa satirized the line in the song "Be in My Video", noting as well "atomic light." Sagan took this all in good humor, and his final book was entitled Billions and Billions, which opened with a tongue-in-cheek discussion of this catchphrase, observing that Carson was an amateur astronomer and that Carson's comic caricature often included real science. As a humorous tribute to Sagan and his association with the catchphrase "billions and billions", a sagan has been defined as a unit of measurement equivalent to a very large number of anything. Sagan's number is the number of stars in the observable universe. This number is reasonably well defined, because it is known what stars are and what the observable universe is, but its value is highly uncertain. Sagan's ability to convey his ideas allowed many people to understand the cosmos better—simultaneously emphasizing the value and worthiness of the human race, and the relative insignificance of the Earth in comparison to the Universe. He delivered the 1977 series of Royal Institution Christmas Lectures in London. Sagan was a proponent of the search for extraterrestrial life. He urged the scientific community to listen with radio telescopes for signals from potential intelligent extraterrestrial life-forms. Sagan was so persuasive that by 1982 he was able to get a petition advocating SETI published in the journal Science, signed by 70 scientists, including seven Nobel Prize winners. This signaled a tremendous increase in the respectability of a then-controversial field. Sagan also helped Frank Drake write the Arecibo message, a radio message beamed into space from the Arecibo radio telescope on November 16, 1974, aimed at informing potential extraterrestrials about Earth. Sagan was chief technology officer of the professional planetary research journal Icarus for 12 years. He co-founded The Planetary Society and was a member of the SETI Institute Board of Trustees. Sagan served as Chairman of the Division for Planetary Science of the American Astronomical Society, as President of the Planetology Section of the American Geophysical Union, and as Chairman of the Astronomy Section of the American Association for the Advancement of Science (AAAS). At the height of the Cold War, Sagan became involved in nuclear disarmament efforts by promoting hypotheses on the effects of nuclear war, when Paul Crutzen's "Twilight at Noon" concept suggested that a substantial nuclear exchange could trigger a nuclear twilight and upset the delicate balance of life on Earth by cooling the surface. In 1983 he was one of five authors—the "S"—in the follow-up "TTAPS" model (as the research article came to be known), which contained the first use of the term "nuclear winter", which his colleague Richard P. Turco had coined. In 1984 he co-authored the book The Cold and the Dark: The World after Nuclear War and in 1990 the book A Path Where No Man Thought: Nuclear Winter and the End of the Arms Race, which explains the nuclear-winter hypothesis and advocates nuclear disarmament. Sagan received a great deal of skepticism and disdain for the use of media to disseminate a very uncertain hypothesis. A personal correspondence with nuclear physicist Edward Teller around 1983 began amicably, with Teller expressing support for continued research to ascertain the credibility of the winter hypothesis. However, Sagan and Teller's correspondence would ultimately result in Teller writing: "A propagandist is one who uses incomplete information to produce maximum persuasion. I can compliment you on being, indeed, an excellent propagandist, remembering that a propagandist is the better the less he appears to be one." Biographers of Sagan would also comment that from a scientific viewpoint, nuclear winter was a low point for Sagan, although, politically speaking, it popularized his image amongst the public. The adult Sagan remained a fan of science fiction, although disliking stories that were not realistic (such as ignoring the inverse-square law) or, he said, did not include "thoughtful pursuit of alternative futures." He wrote books to popularize science, such as Cosmos, which reflected and expanded upon some of the themes of A Personal Voyage and became the best-selling science book ever published in English; The Dragons of Eden: Speculations on the Evolution of Human Intelligence, which won a Pulitzer Prize; and Broca's Brain: Reflections on the Romance of Science. Sagan also wrote the best-selling science fiction novel Contact in 1985, based on a film treatment he wrote with his wife, Ann Druyan, in 1979, but he did not live to see the book's 1997 motion-picture adaptation, which starred Jodie Foster and won the 1998 Hugo Award for Best Dramatic Presentation. Sagan wrote a sequel to Cosmos, Pale Blue Dot: A Vision of the Human Future in Space, which was selected as a notable book of 1995 by The New York Times. He appeared on PBS's Charlie Rose program in January 1995. Sagan also wrote the introduction for Stephen Hawking's bestseller A Brief History of Time. Sagan was also known for his popularization of science, his efforts to increase scientific understanding among the general public, and his positions in favor of scientific skepticism and against pseudoscience, such as his debunking of the Betty and Barney Hill abduction. To mark the tenth anniversary of Sagan's death, David Morrison, a former student of Sagan, recalled "Sagan's immense contributions to planetary research, the public understanding of science, and the skeptical movement" in Skeptical Inquirer. Following Saddam Hussein's threats to light Kuwait's oil wells on fire in response to any physical challenge to Iraqi control of the oil assets, Sagan together with his "TTAPS" colleagues and Paul Crutzen, warned in January 1991 in The Baltimore Sun and Wilmington Morning Star newspapers that if the fires were left to burn over a period of several months, enough smoke from the 600 or so 1991 Kuwaiti oil fires "might get so high as to disrupt agriculture in much of South Asia ..." and that this possibility should "affect the war plans"; these claims were also the subject of a televised debate between Sagan and physicist Fred Singer on January 22, aired on the ABC News program Nightline. In the televised debate, Sagan argued that the effects of the smoke would be similar to the effects of a nuclear winter, with Singer arguing to the contrary. After the debate, the fires burnt for many months before extinguishing efforts were complete. The results of the smoke did not produce continental-sized cooling. Sagan later conceded in The Demon-Haunted World that the prediction did not turn out to be correct: "it was pitch black at noon and temperatures dropped 4–6 °C over the Persian Gulf, but not much smoke reached stratospheric altitudes and Asia was spared." In his later years Sagan advocated the creation of an organized search for asteroids/near-Earth objects (NEOs) that might impact the Earth but to forestall or postpone developing the technological methods that would be needed to defend against them. He argued that all of the numerous methods proposed to alter the orbit of an asteroid, including the employment of nuclear detonations, created a deflection dilemma: if the ability to deflect an asteroid away from the Earth exists, then one would also have the ability to divert a non-threatening object towards Earth, creating an immensely destructive weapon. In a 1994 paper he co-authored, he ridiculed a 3-day long "Near-Earth Object Interception Workshop" held by Los Alamos National Laboratory (LANL) in 1993 that did not, "even in passing" state that such interception and deflection technologies could have these "ancillary dangers." Sagan remained hopeful that the natural NEO impact threat and the intrinsically double-edged essence of the methods to prevent these threats would serve as a "new and potent motivation to maturing international relations." Later acknowledging that, with sufficient international oversight, in the future a "work our way up" approach to implementing nuclear explosive deflection methods could be fielded, and when sufficient knowledge was gained, to use them to aid in mining asteroids. His interest in the use of nuclear detonations in space grew out of his work in 1958 for the Armour Research Foundation's Project A119, concerning the possibility of detonating a nuclear device on the lunar surface. Sagan was a critic of Plato, having said of the ancient Greek philosopher: "Science and mathematics were to be removed from the hands of the merchants and the artisans. This tendency found its most effective advocate in a follower of Pythagoras named Plato" and He (Plato) believed that ideas were far more real than the natural world. He advised the astronomers not to waste their time observing the stars and planets. It was better, he believed, just to think about them. Plato expressed hostility to observation and experiment. He taught contempt for the real world and disdain for the practical application of scientific knowledge. Plato's followers succeeded in extinguishing the light of science and experiment that had been kindled by Democritus and the other Ionians. In 1995 (as part of his book The Demon-Haunted World) Sagan popularized a set of tools for skeptical thinking called the "baloney detection kit", a phrase first coined by Arthur Felberbaum, a friend of his wife Ann Druyan. Speaking about his activities in popularizing science, Sagan said that there were at least two reasons for scientists to share the purposes of science and its contemporary state. Simple self-interest was one: much of the funding for science came from the public, and the public therefore had the right to know how the money was being spent. If scientists increased public admiration for science, there was a good chance of having more public supporters. The other reason was the excitement of communicating one's own excitement about science to others. Following the success of Cosmos, Sagan set up his own publishing firm, Cosmos Store, to publish science books for the general public. It was not successful. While Sagan was widely adored by the general public, his reputation in the scientific community was more polarized. Critics sometimes characterized his work as fanciful, non-rigorous, and self-aggrandizing, and others complained in his later years that he neglected his role as a faculty member to foster his celebrity status. One of Sagan's harshest critics, Harold Urey, felt that Sagan was getting too much publicity for a scientist and was treating some scientific theories too casually. Urey and Sagan were said to have different philosophies of science, according to Davidson. While Urey was an "old-time empiricist" who avoided theorizing about the unknown, Sagan was by contrast willing to speculate openly about such matters. Fred Whipple wanted Harvard to keep Sagan there, but learned that because Urey was a Nobel laureate, his opinion was an important factor in Harvard denying Sagan tenure. Sagan's Harvard friend Lester Grinspoon also stated: "I know Harvard well enough to know there are people there who certainly do not like people who are outspoken." Grinspoon added: Wherever you turned, there was one astronomer being quoted on everything, one astronomer whose face you were seeing on TV, and one astronomer whose books had the preferred display slot at the local bookstore. Some, like Urey, later came to realize that Sagan's popular brand of scientific advocacy was beneficial to the science as a whole. Urey especially liked Sagan's 1977 book The Dragons of Eden and wrote Sagan with his opinion: "I like it very much and am amazed that someone like you has such an intimate knowledge of the various features of the problem... I congratulate you... You are a man of many talents." Sagan was accused of borrowing some ideas of others for his own benefit and countered these claims by explaining that the misappropriation was an unfortunate side effect of his role as a science communicator and explainer, and that he attempted to give proper credit whenever possible. Sagan believed that the Drake equation, on substitution of reasonable estimates, suggested that a large number of extraterrestrial civilizations would form, but that the lack of evidence of such civilizations highlighted by the Fermi paradox suggests technological civilizations tend to self-destruct. This stimulated his interest in identifying and publicizing ways that humanity could destroy itself, with the hope of avoiding such a cataclysm and eventually becoming a spacefaring species. Sagan's deep concern regarding the potential destruction of human civilization in a nuclear holocaust was conveyed in a memorable cinematic sequence in the final episode of Cosmos, called "Who Speaks for Earth?" Sagan had already resigned from the Air Force Scientific Advisory Board's UFO-investigating Condon Committee and voluntarily surrendered his top-secret clearance in protest over the Vietnam War. Following his marriage to his third wife (novelist Ann Druyan) in June 1981, Sagan became more politically active—particularly in opposing escalation of the nuclear arms race under President Ronald Reagan. In March 1983, Reagan announced the Strategic Defense Initiative—a multibillion-dollar project to develop a comprehensive defense against attack by nuclear missiles, which was quickly dubbed the "Star Wars" program. Sagan spoke out against the project, arguing that it was technically impossible to develop a system with the level of perfection required, and far more expensive to build such a system than it would be for an enemy to defeat it through decoys and other means—and that its construction would seriously destabilize the "nuclear balance" between the United States and the Soviet Union, making further progress toward nuclear disarmament impossible. When Soviet leader Mikhail Gorbachev declared a unilateral moratorium on the testing of nuclear weapons, which would begin on August 6, 1985—the 40th anniversary of the atomic bombing of Hiroshima—the Reagan administration dismissed the dramatic move as nothing more than propaganda and refused to follow suit. In response, US anti-nuclear and peace activists staged a series of protest actions at the Nevada Test Site, beginning on Easter Sunday in 1986 and continuing through 1987. Hundreds of people in the "Nevada Desert Experience" group were arrested, including Sagan, who was arrested on two separate occasions as he climbed over a chain-link fence at the test site during the underground Operation Charioteer and United States's Musketeer nuclear test series of detonations. Sagan was also a vocal advocate of the controversial notion of testosterone poisoning, arguing in 1992 that human males could become gripped by an "unusually severe [case of] testosterone poisoning" and this could compel them to become genocidal. In his review of Moondance magazine writer Daniela Gioseffi's 1990 book Women on War, he argues that females are the only half of humanity "untainted by testosterone poisoning." One chapter of his 1993 book Shadows of Forgotten Ancestors is dedicated to testosterone and its alleged poisonous effects. In 1989, Carl Sagan was interviewed by Ted Turner whether he believed in socialism and responded that: "I'm not sure what a socialist is. But I believe the government has a responsibility to care for the people... I'm talking about making the people self-reliant." Sagan was married three times. In 1957, he married biologist Lynn Margulis. The couple had two children, Jeremy and Dorion Sagan; their marriage ended in 1964. Sagan married artist Linda Salzman in 1968 and they had a child together, Nick Sagan, and divorced in 1981. During these marriages, Carl Sagan focused heavily on his career, a factor which may have contributed to Sagan's first divorce. In 1981, Sagan married author Ann Druyan and they later had two children, Alexandra (known as Sasha) and Samuel Sagan. Carl Sagan and Druyan remained married until his death in 1996. While teaching at Cornell, he lived in an Egyptian revival house in Ithaca perched on the edge of a cliff that had formerly been the headquarters of a Cornell secret society. While there he drove a red Porsche 911 Targa and an orange 1970 Porsche 914 with the license plate PHOBOS. In 1994, engineers at Apple Computer code-named the Power Macintosh 7100 "Carl Sagan" in the hope that Apple would make "billions and billions" with the sale of the PowerMac 7100. The name was only used internally, but Sagan was concerned that it would become a product endorsement and sent Apple a cease-and-desist letter. Apple complied, but engineers retaliated by changing the internal codename to "BHA" for "Butt-Head Astronomer." In November 1995, after further legal battle, an out-of-court settlement was reached and Apple's office of trademarks and patents released a conciliatory statement that "Apple has always had great respect for Dr. Sagan. It was never Apple's intention to cause Dr. Sagan or his family any embarrassment or concern." In 2019, Carl Sagan's daughter Sasha Sagan released For Small Creatures Such as We: Rituals for Finding Meaning in our Unlikely World, which depicts life with her parents and her father's death when she was fourteen. Building on a theme in her father's work, Sasha Sagan argues in For Small Creatures Such as We that skepticism does not imply pessimism. I have just finished The Cosmic Connection and loved every word of it. You are my idea of a good writer because you have an unmannered style, and when I read what you write, I hear you talking. One thing about the book made me nervous. It was entirely too obvious that you are smarter than I am. I hate that. Isaac Asimov, in a letter to Sagan, 1973 Sagan was acquainted with the science fiction fandom through his friendship with Isaac Asimov, and he spoke at the Nebula Awards ceremony in 1969. Asimov described Sagan as one of only two people he ever met whose intellect surpassed his own, the other being computer scientist and artificial intelligence expert Marvin Minsky. Sagan wrote frequently about religion and the relationship between religion and science, expressing his skepticism about the conventional conceptualization of God as a sapient being. For example: Some people think God is an outsized, light-skinned male with a long white beard, sitting on a throne somewhere up there in the sky, busily tallying the fall of every sparrow. Others—for example Baruch Spinoza and Albert Einstein—considered God to be essentially the sum total of the physical laws which describe the universe. I do not know of any compelling evidence for anthropomorphic patriarchs controlling human destiny from some hidden celestial vantage point, but it would be madness to deny the existence of physical laws. In another description of his view on the concept of God, Sagan wrote: The idea that God is an oversized white male with a flowing beard who sits in the sky and tallies the fall of every sparrow is ludicrous. But if by God one means the set of physical laws that govern the universe, then clearly there is such a God. This God is emotionally unsatisfying ... it does not make much sense to pray to the law of gravity. On atheism, Sagan commented in 1981: An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God. I know of no such compelling evidence. Because God can be relegated to remote times and places and to ultimate causes, we would have to know a great deal more about the universe than we do now to be sure that no such God exists. To be certain of the existence of God and to be certain of the nonexistence of God seem to me to be the confident extremes in a subject so riddled with doubt and uncertainty as to inspire very little confidence indeed. Sagan also commented on Christianity and the Jefferson Bible, stating "My long-time view about Christianity is that it represents an amalgam of two seemingly immiscible parts, the religion of Jesus and the religion of Paul. Thomas Jefferson attempted to excise the Pauline parts of the New Testament. There wasn't much left when he was done, but it was an inspiring document." Sagan thought that spirituality should be scientifically informed and that traditional religions should be abandoned and replaced with belief systems that revolve around the scientific method, but also the mystery and incompleteness of scientific fields. Regarding spirituality and its relationship with science, Sagan stated: 'Spirit' comes from the Latin word 'to breathe'. What we breathe is air, which is certainly matter, however thin. Despite usage to the contrary, there is no necessary implication in the word 'spiritual' that we are talking of anything other than matter (including the matter of which the brain is made), or anything outside the realm of science. On occasion, I will feel free to use the word. Science is not only compatible with spirituality; it is a profound source of spirituality. When we recognize our place in an immensity of light-years and in the passage of ages, when we grasp the intricacy, beauty, and subtlety of life, then that soaring feeling, that sense of elation and humility combined, is surely spiritual. An environmental appeal, "Preserving and Cherishing the Earth", primarily written by Sagan and signed by him and other noted scientists as well as religious leaders, and published in January 1990, stated that "The historical record makes clear that religious teaching, example, and leadership are powerfully able to influence personal conduct and commitment... Thus, there is a vital role for religion and science." In reply to a question in 1996 about his religious beliefs, Sagan answered, "I'm agnostic." Sagan maintained that the idea of a creator God of the Universe was difficult to prove or disprove and that the only conceivable scientific discovery that could challenge it would be an infinitely old universe. His son, Dorion Sagan said, "My father believed in the God of Spinoza and Einstein, God not behind nature but as nature, equivalent to it." His last wife, Ann Druyan, stated: When my husband died, because he was so famous and known for not being a believer, many people would come up to me—it still sometimes happens—and ask me if Carl changed at the end and converted to a belief in an afterlife. They also frequently ask me if I think I will see him again. Carl faced his death with unflagging courage and never sought refuge in illusions. The tragedy was that we knew we would never see each other again. I don't ever expect to be reunited with Carl. In 2006, Ann Druyan edited Sagan's 1985 Glasgow Gifford Lectures in Natural Theology into a book, The Varieties of Scientific Experience: A Personal View of the Search for God, in which he elaborates on his views of divinity in the natural world. Sagan is also widely regarded as a freethinker or skeptic; one of his most famous quotations, in Cosmos, was, "Extraordinary claims require extraordinary evidence" (called the "Sagan standard" by some). This was based on a nearly identical statement by fellow founder of the Committee for the Scientific Investigation of Claims of the Paranormal, Marcello Truzzi, "An extraordinary claim requires extraordinary proof." This idea had been earlier aphorized in Théodore Flournoy's work From India to the Planet Mars (1899) from a longer quote by Pierre-Simon Laplace (1749–1827), a French mathematician and astronomer, as the Principle of Laplace: "The weight of the evidence should be proportioned to the strangeness of the facts." Late in his life, Sagan's books elaborated on his naturalistic view of the world. In The Demon-Haunted World, he presented tools for testing arguments and detecting fallacious or fraudulent ones, essentially advocating the wide use of critical thinking and of the scientific method. The compilation Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium, published in 1997 after Sagan's death, contains essays written by him, on topics such as his views on abortion, and also an essay by his widow, Ann Druyan, about the relationship between his agnostic and freethinking beliefs and his death. Sagan warned against humans' tendency towards anthropocentrism. He was the faculty adviser for the Cornell Students for the Ethical Treatment of Animals. In the Cosmos chapter "Blues For a Red Planet", Sagan wrote, "If there is life on Mars, I believe we should do nothing with Mars. Mars then belongs to the Martians, even if the Martians are only microbes." Sagan was a user and advocate of marijuana. Under the pseudonym "Mr. X", he contributed an essay about smoking cannabis to the 1971 book Marihuana Reconsidered. The essay explained that marijuana use had helped to inspire some of Sagan's works and enhance sensual and intellectual experiences. After Sagan's death, his friend Lester Grinspoon disclosed this information to Sagan's biographer, Keay Davidson. The publishing of the biography, Carl Sagan: A Life, in 1999 brought media attention to this aspect of Sagan's life. Not long after his death, his widow Ann Druyan went on to preside over the board of directors of the National Organization for the Reform of Marijuana Laws (NORML), a non-profit organization dedicated to reforming cannabis laws. In 1947, the year that inaugurated the "flying saucer" craze, the young Sagan suspected the "discs" might be alien spaceships. Sagan's interest in UFO reports prompted him on August 3, 1952, to write a letter to U.S. Secretary of State Dean Acheson to ask how the United States would respond if flying saucers turned out to be extraterrestrial. He later had several conversations on the subject in 1964 with Jacques Vallée. Though quite skeptical of any extraordinary answer to the UFO question, Sagan thought scientists should study the phenomenon, at least because there was widespread public interest in UFO reports. Stuart Appelle notes that Sagan "wrote frequently on what he perceived as the logical and empirical fallacies regarding UFOs and the abduction experience. Sagan rejected an extraterrestrial explanation for the phenomenon but felt there were both empirical and pedagogical benefits for examining UFO reports and that the subject was, therefore, a legitimate topic of study." In 1966, Sagan was a member of the Ad Hoc Committee to Review Project Blue Book, the U.S. Air Force's UFO investigation project. The committee concluded Blue Book had been lacking as a scientific study, and recommended a university-based project to give the UFO phenomenon closer scientific scrutiny. The result was the Condon Committee (1966–68), led by physicist Edward Condon, and in their final report they formally concluded that UFOs, regardless of what any of them actually were, did not behave in a manner consistent with a threat to national security. Sociologist Ron Westrum writes that "The high point of Sagan's treatment of the UFO question was the AAAS' symposium in 1969. A wide range of educated opinions on the subject were offered by participants, including not only proponents such as James McDonald and J. Allen Hynek but also skeptics like astronomers William Hartmann and Donald Menzel. The roster of speakers was balanced, and it is to Sagan's credit that this event was presented in spite of pressure from Edward Condon." With physicist Thornton Page, Sagan edited the lectures and discussions given at the symposium; these were published in 1972 as UFO's: A Scientific Debate. Some of Sagan's many books examine UFOs (as did one episode of Cosmos) and he claimed a religious undercurrent to the phenomenon. Sagan again revealed his views on interstellar travel in his 1980 Cosmos series. In one of his last written works, Sagan argued that the chances of extraterrestrial spacecraft visiting Earth are vanishingly small. However, Sagan did think it plausible that Cold War concerns contributed to governments misleading their citizens about UFOs, and wrote that "some UFO reports and analyses, and perhaps voluminous files, have been made inaccessible to the public which pays the bills ... It's time for the files to be declassified and made generally available." He cautioned against jumping to conclusions about suppressed UFO data and stressed that there was no strong evidence that aliens were visiting the Earth either in the past or present. Sagan briefly served as an adviser on Stanley Kubrick's film 2001: A Space Odyssey. Sagan proposed that the film suggest, rather than depict, extraterrestrial superintelligence. Sagan's contribution to the 1969 AAAS symposium was an attack on the belief that UFOs are piloted by extraterrestrial beings. Using the Drake equation and applying several logical assumptions, Sagan calculated the possible number of advanced civilizations capable of interstellar travel to be about one million. He projected that any civilization wishing to check on all the others on a regular basis of, say, once a year would have to launch 10,000 spacecraft annually. Not only does that seem like an unreasonable number of launchings, but it would take all the material in one percent of the universe's stars to produce all the spaceships needed for all the civilizations to seek each other out. To argue that the Earth was being chosen for regular visitations, Sagan said, one would have to assume that the planet is somehow unique, and that assumption "goes exactly against the idea that there are lots of civilizations around. Because if there are then our sort of civilization must be pretty common. And if we're not pretty common then there aren't going to be many civilizations advanced enough to send visitors." This argument, which some called Sagan's paradox, helped to establish a new school of thought, namely the belief that extraterrestrial life exists, but it has nothing to do with UFOs. The new belief had a salutary effect on UFO studies. It helped separate researchers who wanted to distinguish UFOs from those who wanted to identify their pilots and it gave scientists opportunities to search the universe for intelligent life unencumbered by the stigma associated with UFOs. After suffering from myelodysplasia for two years and receiving three bone marrow transplants from his sister, Sagan died from pneumonia at the age of 62 at the Fred Hutchinson Cancer Research Center in Seattle on December 20, 1996. He was buried at Lake View Cemetery in Ithaca, New York. The 1997 film Contact was based on the only novel Sagan wrote and finished after his death. It ends with the dedication "For Carl." His photo can also be seen in the film. In 1997, the Sagan Planet Walk was opened in Ithaca, New York. It is a walking-scale model of the Solar System, extending 1.2 km from the center of The Commons in downtown Ithaca to the Sciencenter, a hands-on museum. The exhibition was created in memory of Carl Sagan, who was an Ithaca resident and Cornell Professor. Professor Sagan had been a founding member of the museum's advisory board. The landing site of the uncrewed Mars Pathfinder spacecraft was renamed the Carl Sagan Memorial Station on July 5, 1997. Asteroid 2709 Sagan is named in his honor, as is the Carl Sagan Institute for the search of habitable planets. Sagan's son, Nick Sagan, wrote several episodes in the Star Trek franchise. In an episode of Star Trek: Enterprise entitled "Terra Prime", a quick shot is shown of the relic rover Sojourner, part of the Mars Pathfinder mission, placed by a historical marker at Carl Sagan Memorial Station on the Martian surface. The marker displays a quote from Sagan: "Whatever the reason you're on Mars, I'm glad you're there, and I wish I was with you." Sagan's student Steve Squyres led the team that landed the rovers Spirit and Opportunity successfully on Mars in 2004. On November 9, 2001, on what would have been Sagan's 67th birthday, the Ames Research Center dedicated the site for the Carl Sagan Center for the Study of Life in the Cosmos. "Carl was an incredible visionary, and now his legacy can be preserved and advanced by a 21st century research and education laboratory committed to enhancing our understanding of life in the universe and furthering the cause of space exploration for all time", said NASA Administrator Daniel Goldin. Ann Druyan was at the center as it opened its doors on October 22, 2006. Sagan has at least three awards named in his honor: August 2007 the Independent Investigations Group (IIG) awarded Sagan posthumously a Lifetime Achievement Award. This honor has also been awarded to Harry Houdini and James Randi. In September 2008, a musical compositor Benn Jordan released his album Pale Blue Dot as a tribute to Carl Sagan's life. Beginning in 2009, a musical project known as Symphony of Science sampled several excerpts of Sagan from his series Cosmos and remixed them to electronic music. To date, the videos have received over 21 million views worldwide on YouTube. The 2014 Swedish science fiction short film Wanderers uses excerpts of Sagan's narration in 1994 of his book Pale Blue Dot, played over digitally-created visuals of humanity's possible future expansion into outer space. In February 2015, the Finnish-based symphonic metal band Nightwish released the song "Sagan" as a non-album bonus track for their single "Élan." The song, written by the band's songwriter/composer/keyboardist Tuomas Holopainen, is an homage to the life and work of the late Carl Sagan. In August 2015, it was announced that a biopic of Sagan's life was being planned by Warner Bros. On October 21, 2019, the Carl Sagan and Ann Druyan Theater was opened at the Center for Inquiry West in Los Angeles. In 2022, Sagan was posthumously awarded the Future of Life Award "for reducing the risk of nuclear war by developing and popularizing the science of nuclear winter." The honor, shared by seven other recipients involved in nuclear winter research, was accepted by his widow, Ann Druyan. In 2022, the audiobook recording of Sagan's 1994 book Pale Blue Dot was selected by the U.S. Library of Congress for inclusion in the National Recording Registry for being "culturally, historically, or aesthetically significant." In 2023, a movie Voyagers by Sebastián Lelio was announced with Sagan played by Andrew Garfield and with Daisy Edgar-Jones playing Sagan's 3rd wife, Ann Druyan.	[ { "paragraph_id": 0, "text": "Carl Edward Sagan (/ˈseɪɡən/; SAY-gən; November 9, 1934 – December 20, 1996) was an American astronomer and science communicator. His best known scientific contribution is his research on the possibility of extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by exposure to light. He assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, which were universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. He argued in favor of the hypothesis, which has since been accepted, that the high surface temperatures of Venus are the result of the greenhouse effect.", "title": "" }, { "paragraph_id": 1, "text": "Initially an assistant professor at Harvard, Sagan later moved to Cornell, where he spent most of his career. He published more than 600 scientific papers and articles and was author, co-author or editor of more than 20 books. He wrote many popular science books, such as The Dragons of Eden, Broca's Brain, Pale Blue Dot and The Demon-Haunted World. He also co-wrote and narrated the award-winning 1980 television series Cosmos: A Personal Voyage, which became the most widely watched series in the history of American public television: Cosmos has been seen by at least 500 million people in 60 countries. A book, also called Cosmos, was published to accompany the series. Sagan also wrote a science-fiction novel, published in 1985, called Contact, which became the basis for a 1997 film of the same name. His papers, comprising 595,000 items, are archived in the Library of Congress.", "title": "" }, { "paragraph_id": 2, "text": "Sagan was a popular public advocate of skeptical scientific inquiry and the scientific method; he pioneered the field of exobiology and promoted the search for extra-terrestrial intelligent life (SETI). He spent most of his career as a professor of astronomy at Cornell University, where he directed the Laboratory for Planetary Studies. Sagan and his works received numerous awards and honors, including the NASA Distinguished Public Service Medal, the National Academy of Sciences Public Welfare Medal, the Pulitzer Prize for General Non-Fiction (for his book The Dragons of Eden), and (for Cosmos: A Personal Voyage), two Emmy Awards, the Peabody Award, and the Hugo Award. He married three times and had five children. After developing myelodysplasia, Sagan died of pneumonia at the age of 62 on December 20, 1996.", "title": "" }, { "paragraph_id": 3, "text": "Carl Edward Sagan was born in the Bensonhurst neighborhood of New York City's Brooklyn borough on November 9, 1934. His mother, Rachel Molly Gruber, was a housewife from New York City; his father, Samuel Sagan, was a Ukrainian garment worker who emigrated from Kamianets-Podilskyi (which was then in the Russian Empire). Sagan was named in honor of his maternal grandmother, Chaiya Clara, who had died while giving birth to her second child; she was, in Sagan's words, \"the mother she [Rachel] never knew.\" Sagan's maternal grandfather later married a woman named Rose, whom Sagan's sister Carol would later say was \"never accepted\" as Rachel's mother because Rachel \"knew she [Rose] wasn't her birth mother.\" Sagan's family lived in a modest apartment in Bensonhurst. He later discussed his family being Reform Jews, the most liberal of Judaism's four main branches. He and his sister agreed that their father was not especially religious, but that their mother \"definitely believed in God, and was active in the temple [...] and served only kosher meat.\" During the worst years of the Depression, his father worked as a movie theater usher.", "title": "Early life" }, { "paragraph_id": 4, "text": "According to biographer Keay Davidson, Sagan experienced a kind of \"inner war\" as a result of his close relationship with both of his parents, who were in many ways \"opposites.\" He traced his later analytical urges to his mother, a woman who had been extremely poor as a child in New York City during World War I and the 1920s. As a young woman, she had had intellectual ambitions, but they were sabotaged by her poverty, her status as a woman and a wife, and her Jewish ethnicity. Davidson suggested that this is why she \"worshipped her only son, Carl\" because \"he would fulfill her unfulfilled dreams.\" Sagan believed that he got his sense of wonder from his father, who spent his free time giving apples to the poor or helping soothing tensions between employees and management within New York City's garment industry. Although awed by his son's intellectual abilities, Sagan's father took his inquisitiveness in stride and saw it as part of growing up. Later, during his career, Sagan would draw on his childhood memories to illustrate scientific points as he did in his book Shadows of Forgotten Ancestors.", "title": "Early life" }, { "paragraph_id": 5, "text": "Describing his parents' influence on his later thinking, Sagan said: \"My parents were not scientists. They knew almost nothing about science. But in introducing me simultaneously to skepticism and to wonder, they taught me the two uneasily cohabiting modes of thought that are central to the scientific method.\" He recalled that a defining moment in his development was at age four, when his parents took him to see the exhibits at the 1939 New York World's Fair. He later described his memories of several exhibits there. One was a moving map in the America of Tomorrow exhibit, which he said \"showed beautiful highways and cloverleaves and little General Motors cars all carrying people to skyscrapers, buildings with lovely spires, flying buttresses—and it looked great!\" Another was a flashlight shining on a photoelectric cell, which created a crackling sound, and another showed how the sound from a tuning fork became a wave on an oscilloscope. He also saw an exhibit of the then-nascent medium known as television. Referring to that exhibit, he later wrote: \"Plainly, the world held wonders of a kind I had never guessed. How could a tone become a picture and light become a noise?\"", "title": "Early life" }, { "paragraph_id": 6, "text": "Sagan also saw one of the Fair's most publicized events: the burial of a time capsule at Flushing Meadows, which contained mementos of the 1930s to be recovered by Earth's descendants in a future millennium. Davidson wrote that this \"thrilled Carl.\" As an adult, inspired by his memories of the World's Fair, Sagan and his colleagues would create similar time capsules to be sent out into the galaxy: the Pioneer plaque and the Voyager Golden Record précis. During World War II, Sagan's family worried about the fate of their European relatives. Sagan, however, was generally unaware of the details of the ongoing war. He wrote, \"Sure, we had relatives who were caught up in the Holocaust. Hitler was not a popular fellow in our household... but on the other hand, I was fairly insulated from the horrors of the war.\" His sister, Carol, said that their mother \"above all wanted to protect Carl... she had an extraordinarily difficult time dealing with World War II and the Holocaust.\" Sagan's book The Demon-Haunted World (1996) included his memories of this conflicted period, when his family dealt with the realities of the war in Europe but tried to prevent it from undermining his optimistic spirit.", "title": "Early life" }, { "paragraph_id": 7, "text": "Soon after entering elementary school, Sagan began to express a strong inquisitiveness about nature. He recalled taking his first trips to the public library alone, at the age of five, when his mother got him a library card. He wanted to learn what stars were, since none of his friends or their parents could give him a clear answer: \"I went to the librarian and asked for a book about stars [...] and the answer was stunning. It was that the Sun was a star but really close. The stars were suns, but so far away they were just little points of light. The scale of the universe suddenly opened up to me. It was a kind of religious experience. There was a magnificence to it, a grandeur, a scale which has never left me. Never ever left me.\" At about age six or seven, he and a close friend took trips to the American Museum of Natural History in Manhattan. While there, they went to the Hayden Planetarium and walked around the museum's exhibits of space objects, such as meteorites, and displays of dinosaurs and animals in natural settings. He wrote, \"I was transfixed by the dioramas—lifelike representations of animals and their habitats all over the world. Penguins on the dimly lit Antarctic ice [...] a family of gorillas, the male beating his chest [...] an American grizzly bear standing on his hind legs, ten or twelve feet tall, and staring me right in the eye.\"", "title": "Early life" }, { "paragraph_id": 8, "text": "Sagan's parents helped nurture his growing interest in science by buying him chemistry sets and reading materials. However, his interest in space was his primary focus, especially after reading sci-fi stories by writers such as H. G. Wells and Edgar Rice Burroughs, which stirred his imagination about the possibility of life on other planets such as Mars. According to biographer Ray Spangenburg, Sagan's early years of trying to understand the mysteries of the planets became a \"driving force in his life, a continual spark to his intellect, and a quest that would never be forgotten.\" In 1947, Sagan discovered the magazine Astounding Science Fiction, which introduced him to more hard science fiction speculations than those in Burroughs' novels. That same year, a mass hysteria developed about the possibility that extraterrestrial visitors had arrived in flying saucers, and the young Sagan joined in the speculation that the flying \"discs\" people reported seeing in the sky might be alien spaceships.", "title": "Early life" }, { "paragraph_id": 9, "text": "Sagan attended David A. Boody Junior High School in his native Bensonhurst and had his bar mitzvah when he turned 13. In 1948, when he was 14, his father's work took the family to the older semi-industrial town of Rahway, New Jersey, where he attended Rahway High School. He was a straight-A student but was bored because his classes did not challenge him and his teachers did not inspire him. His teachers realized this and tried to convince his parents to send him to a private school, with an administrator telling them, \"This kid ought to go to a school for gifted children, he has something really remarkable.\" However, his parents could not afford to do so. Sagan became president of the school's chemistry club, and set up his own laboratory at home. He taught himself about molecules by making cardboard cutouts to help him visualize how they were formed: \"I found that about as interesting as doing [chemical] experiments.\" He was mostly interested in astronomy, learning about it in his spare time. In his junior year of high school, he discovered that professional astronomers were paid for doing something he always enjoyed, and decided on astronomy as a career goal: \"That was a splendid day—when I began to suspect that if I tried hard I could do astronomy full-time, not just part-time.\" Sagan graduated from Rahway High School in 1951.", "title": "Early life" }, { "paragraph_id": 10, "text": "Before the end of high school, Sagan entered an essay writing contest in which he explored the idea that human contact with advanced life forms from another planet might be as disastrous for people on Earth as Native Americans' first contact with Europeans had been for Native Americans. The subject was considered controversial, but his rhetorical skill won over the judges and they awarded him first prize. When he was about to graduate from high school, his classmates voted him \"most likely to succeed\" and put him in line to be valedictorian. He attended the University of Chicago because, despite his excellent high school grades, it was one of the very few colleges he had applied to that would consider accepting a 16-year-old. Its chancellor, Robert Maynard Hutchins, had recently retooled the undergraduate College of the University of Chicago into an \"ideal meritocracy\" built on Great Books, Socratic dialogue, comprehensive examinations, and early entrance to college with no age requirement.", "title": "Early life" }, { "paragraph_id": 11, "text": "As an honors-program undergraduate, Sagan worked in the laboratory of geneticist H. J. Muller and wrote a thesis on the origins of life with physical chemist Harold Urey. He also joined the Ryerson Astronomical Society. In 1954, he was awarded a Bachelor of Arts with general and special honors in what he quipped was \"nothing.\" In 1955, he earned a Bachelor of Science in physics. He went on to do graduate work at the University of Chicago, earning a Master of Science in physics in 1956 and a Doctor of Philosophy in astronomy and astrophysics in 1960. His doctoral thesis, submitted to the Department of Astronomy and Astrophysics, was entitled Physical Studies of the Planets. During his graduate studies, he used the summer months to work with planetary scientist Gerard Kuiper, who was his dissertation director, as well as physicist George Gamow and chemist Melvin Calvin. The title of Sagan's dissertation reflected interests he had in common with Kuiper, who had been president of the International Astronomical Union's commission on \"Physical Studies of Planets and Satellites\" throughout the 1950s.", "title": "Early life" }, { "paragraph_id": 12, "text": "In 1958, Sagan and Kuiper worked on the classified military Project A119, a secret U.S. Air Force plan to detonate a nuclear warhead on the Moon and document its effects. Sagan had a Top Secret clearance at the Air Force and a Secret clearance with NASA. In 1999, an article published in the journal Nature revealed that Sagan had included the classified titles of two Project A119 papers in his 1959 application for a scholarship to University of California, Berkeley. A follow-up letter to the journal by project leader Leonard Reiffel confirmed Sagan's security leak.", "title": "Early life" }, { "paragraph_id": 13, "text": "From 1960 to 1962 Sagan was a Miller Fellow at the University of California, Berkeley. Meanwhile, he published an article in 1961 in the journal Science on the atmosphere of Venus, while also working with NASA's Mariner 2 team, and served as a \"Planetary Sciences Consultant\" to the RAND Corporation.", "title": "Career and research" }, { "paragraph_id": 14, "text": "After the publication of Sagan's Science article, in 1961 Harvard University astronomers Fred Whipple and Donald Menzel offered Sagan the opportunity to give a colloquium at Harvard and subsequently offered him a lecturer position at the institution. Sagan instead asked to be made an assistant professor, and eventually Whipple and Menzel were able to convince Harvard to offer Sagan the assistant professor position he requested. Sagan lectured, performed research, and advised graduate students at the institution from 1963 until 1968, as well as working at the Smithsonian Astrophysical Observatory, also located in Cambridge, Massachusetts.", "title": "Career and research" }, { "paragraph_id": 15, "text": "In 1968, Sagan was denied academic tenure at Harvard. He later indicated that the decision was very unexpected. The denial has been blamed on several factors, including that he focused his interests too broadly across a number of areas (while the norm in academia is to become a renowned expert in a narrow specialty), and perhaps because of his well-publicized scientific advocacy, which some scientists perceived as borrowing the ideas of others for little more than self-promotion. An advisor from his years as an undergraduate student, Harold Urey, wrote a letter to the tenure committee recommending strongly against tenure for Sagan.", "title": "Career and research" }, { "paragraph_id": 16, "text": "Science is more than a body of knowledge; it is a way of thinking. I have a foreboding of an America in my children's or grandchildren's time – when the United States is a service and information economy; when nearly all the key manufacturing industries have slipped away to other countries; when awesome technological powers are in the hands of a very few, and no one representing the public interest can even grasp the issues; when the people have lost the ability to set their own agendas or knowledgeably question those in authority; when, clutching our crystals and nervously consulting our horoscopes, our critical faculties in decline, unable to distinguish between what feels good and what's true, we slide, almost without noticing, back into superstition and darkness... The dumbing down of America is most evident in the slow decay of substantive content in the enormously influential media, the 30 second sound bites (now down to 10 seconds or less), lowest common denominator programming, credulous presentations on pseudoscience and superstition, but especially a kind of celebration of ignorance.", "title": "Career and research" }, { "paragraph_id": 17, "text": "Carl Sagan, from Demon-Haunted World (1995)", "title": "Career and research" }, { "paragraph_id": 18, "text": "Long before the ill-fated tenure process, Cornell University astronomer Thomas Gold had courted Sagan to move to Ithaca, New York, and join the recently-hired astronomer Frank Drake amongst the faculty at Cornell. Following the denial of tenure from Harvard, Sagan accepted Gold's offer and remained a faculty member at Cornell for nearly 30 years until his death in 1996. Unlike Harvard, the smaller and more laid-back astronomy department at Cornell welcomed Sagan's growing celebrity status. Following two years as an associate professor, Sagan became a full professor at Cornell in 1970 and directed the Laboratory for Planetary Studies there. From 1972 to 1981, he was associate director of the Center for Radiophysics and Space Research (CRSR) at Cornell. In 1976, he became the David Duncan Professor of Astronomy and Space Sciences, a position he held for the remainder of his life.", "title": "Career and research" }, { "paragraph_id": 19, "text": "Sagan was associated with the U.S. space program from its inception. From the 1950s onward, he worked as an advisor to NASA, where one of his duties included briefing the Apollo astronauts before their flights to the Moon. Sagan contributed to many of the robotic spacecraft missions that explored the Solar System, arranging experiments on many of the expeditions. Sagan assembled the first physical message that was sent into space: a gold-plated plaque, attached to the space probe Pioneer 10, launched in 1972. Pioneer 11, also carrying another copy of the plaque, was launched the following year. He continued to refine his designs; the most elaborate message he helped to develop and assemble was the Voyager Golden Record, which was sent out with the Voyager space probes in 1977. Sagan often challenged the decisions to fund the Space Shuttle and the International Space Station at the expense of further robotic missions.", "title": "Career and research" }, { "paragraph_id": 20, "text": "Former student David Morrison described Sagan as \"an 'idea person' and a master of intuitive physical arguments and 'back of the envelope' calculations\", and Gerard Kuiper said that \"Some persons work best in specializing on a major program in the laboratory; others are best in liaison between sciences. Dr. Sagan belongs in the latter group.\"", "title": "Career and research" }, { "paragraph_id": 21, "text": "Sagan's contributions were central to the discovery of the high surface temperatures of the planet Venus. In the early 1960s no one knew for certain the basic conditions of Venus' surface, and Sagan listed the possibilities in a report later depicted for popularization in a Time Life book Planets. His own view was that Venus was dry and very hot as opposed to the balmy paradise others had imagined. He had investigated radio waves from Venus and concluded that there was a surface temperature of 500 °C (900 °F). As a visiting scientist to NASA's Jet Propulsion Laboratory, he contributed to the first Mariner missions to Venus, working on the design and management of the project. Mariner 2 confirmed his conclusions on the surface conditions of Venus in 1962.", "title": "Career and research" }, { "paragraph_id": 22, "text": "Sagan was among the first to hypothesize that Saturn's moon Titan might possess oceans of liquid compounds on its surface and that Jupiter's moon Europa might possess subsurface oceans of water. This would make Europa potentially habitable. Europa's subsurface ocean of water was later indirectly confirmed by the spacecraft Galileo. The mystery of Titan's reddish haze was also solved with Sagan's help. The reddish haze was revealed to be due to complex organic molecules constantly raining down onto Titan's surface.", "title": "Career and research" }, { "paragraph_id": 23, "text": "Sagan further contributed insights regarding the atmospheres of Venus and Jupiter, as well as seasonal changes on Mars. He also perceived global warming as a growing, man-made danger and likened it to the natural development of Venus into a hot, life-hostile planet through a kind of runaway greenhouse effect. He testified to the US Congress in 1985 that the greenhouse effect would change the earth's climate system. Sagan and his Cornell colleague Edwin Ernest Salpeter speculated about life in Jupiter's clouds, given the planet's dense atmospheric composition rich in organic molecules. He studied the observed color variations on Mars' surface and concluded that they were not seasonal or vegetational changes as most believed, but shifts in surface dust caused by windstorms.", "title": "Career and research" }, { "paragraph_id": 24, "text": "Sagan is also known for his research on the possibilities of extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation.", "title": "Career and research" }, { "paragraph_id": 25, "text": "He is also the 1994 recipient of the Public Welfare Medal, the highest award of the National Academy of Sciences for \"distinguished contributions in the application of science to the public welfare.\" He was denied membership in the academy, reportedly because his media activities made him unpopular with many other scientists.", "title": "Career and research" }, { "paragraph_id": 26, "text": "As of 2017, Sagan is the most cited SETI scientist and one of the most cited planetary scientists.", "title": "Career and research" }, { "paragraph_id": 27, "text": "In 1980 Sagan co-wrote and narrated the award-winning 13-part PBS television series Cosmos: A Personal Voyage, which became the most widely watched series in the history of American public television until 1990. The show has been seen by at least 500 million people across 60 countries. The book, Cosmos, written by Sagan, was published to accompany the series.", "title": "Career and research" }, { "paragraph_id": 28, "text": "Because of his earlier popularity as a science writer from his best-selling books, including The Dragons of Eden, which won him a Pulitzer Prize in 1977, he was asked to write and narrate the show. It was targeted to a general audience of viewers, whom Sagan felt had lost interest in science, partly due to a stifled educational system.", "title": "Career and research" }, { "paragraph_id": 29, "text": "Each of the 13 episodes was created to focus on a particular subject or person, thereby demonstrating the synergy of the universe. They covered a wide range of scientific subjects including the origin of life and a perspective of humans' place on Earth.", "title": "Career and research" }, { "paragraph_id": 30, "text": "The show won an Emmy, along with a Peabody Award, and transformed Sagan from an obscure astronomer into a pop-culture icon. Time magazine ran a cover story about Sagan soon after the show broadcast, referring to him as \"creator, chief writer and host-narrator of the show.\" In 2000, \"Cosmos\" was released on a remastered set of DVDs.", "title": "Career and research" }, { "paragraph_id": 31, "text": "After Cosmos aired, Sagan became associated with the catchphrase \"billions and billions\", although he never actually used the phrase in the Cosmos series. He rather used the term \"billions upon billions.\"", "title": "Career and research" }, { "paragraph_id": 32, "text": "Richard Feynman, a precursor to Sagan, used the phrase \"billions and billions\" many times in his \"red books.\" However, Sagan's frequent use of the word billions and distinctive delivery emphasizing the \"b\" (which he did intentionally, in place of more cumbersome alternatives such as \"billions with a 'b'\", in order to distinguish the word from \"millions\") made him a favorite target of comic performers, including Johnny Carson, Gary Kroeger, Mike Myers, Bronson Pinchot, Penn Jillette, Harry Shearer, and others. Frank Zappa satirized the line in the song \"Be in My Video\", noting as well \"atomic light.\" Sagan took this all in good humor, and his final book was entitled Billions and Billions, which opened with a tongue-in-cheek discussion of this catchphrase, observing that Carson was an amateur astronomer and that Carson's comic caricature often included real science.", "title": "Career and research" }, { "paragraph_id": 33, "text": "As a humorous tribute to Sagan and his association with the catchphrase \"billions and billions\", a sagan has been defined as a unit of measurement equivalent to a very large number of anything.", "title": "Career and research" }, { "paragraph_id": 34, "text": "Sagan's number is the number of stars in the observable universe. This number is reasonably well defined, because it is known what stars are and what the observable universe is, but its value is highly uncertain.", "title": "Career and research" }, { "paragraph_id": 35, "text": "", "title": "Career and research" }, { "paragraph_id": 36, "text": "Sagan's ability to convey his ideas allowed many people to understand the cosmos better—simultaneously emphasizing the value and worthiness of the human race, and the relative insignificance of the Earth in comparison to the Universe. He delivered the 1977 series of Royal Institution Christmas Lectures in London.", "title": "Career and research" }, { "paragraph_id": 37, "text": "Sagan was a proponent of the search for extraterrestrial life. He urged the scientific community to listen with radio telescopes for signals from potential intelligent extraterrestrial life-forms. Sagan was so persuasive that by 1982 he was able to get a petition advocating SETI published in the journal Science, signed by 70 scientists, including seven Nobel Prize winners. This signaled a tremendous increase in the respectability of a then-controversial field. Sagan also helped Frank Drake write the Arecibo message, a radio message beamed into space from the Arecibo radio telescope on November 16, 1974, aimed at informing potential extraterrestrials about Earth.", "title": "Career and research" }, { "paragraph_id": 38, "text": "Sagan was chief technology officer of the professional planetary research journal Icarus for 12 years. He co-founded The Planetary Society and was a member of the SETI Institute Board of Trustees. Sagan served as Chairman of the Division for Planetary Science of the American Astronomical Society, as President of the Planetology Section of the American Geophysical Union, and as Chairman of the Astronomy Section of the American Association for the Advancement of Science (AAAS).", "title": "Career and research" }, { "paragraph_id": 39, "text": "At the height of the Cold War, Sagan became involved in nuclear disarmament efforts by promoting hypotheses on the effects of nuclear war, when Paul Crutzen's \"Twilight at Noon\" concept suggested that a substantial nuclear exchange could trigger a nuclear twilight and upset the delicate balance of life on Earth by cooling the surface. In 1983 he was one of five authors—the \"S\"—in the follow-up \"TTAPS\" model (as the research article came to be known), which contained the first use of the term \"nuclear winter\", which his colleague Richard P. Turco had coined. In 1984 he co-authored the book The Cold and the Dark: The World after Nuclear War and in 1990 the book A Path Where No Man Thought: Nuclear Winter and the End of the Arms Race, which explains the nuclear-winter hypothesis and advocates nuclear disarmament. Sagan received a great deal of skepticism and disdain for the use of media to disseminate a very uncertain hypothesis. A personal correspondence with nuclear physicist Edward Teller around 1983 began amicably, with Teller expressing support for continued research to ascertain the credibility of the winter hypothesis. However, Sagan and Teller's correspondence would ultimately result in Teller writing: \"A propagandist is one who uses incomplete information to produce maximum persuasion. I can compliment you on being, indeed, an excellent propagandist, remembering that a propagandist is the better the less he appears to be one.\" Biographers of Sagan would also comment that from a scientific viewpoint, nuclear winter was a low point for Sagan, although, politically speaking, it popularized his image amongst the public.", "title": "Career and research" }, { "paragraph_id": 40, "text": "The adult Sagan remained a fan of science fiction, although disliking stories that were not realistic (such as ignoring the inverse-square law) or, he said, did not include \"thoughtful pursuit of alternative futures.\" He wrote books to popularize science, such as Cosmos, which reflected and expanded upon some of the themes of A Personal Voyage and became the best-selling science book ever published in English; The Dragons of Eden: Speculations on the Evolution of Human Intelligence, which won a Pulitzer Prize; and Broca's Brain: Reflections on the Romance of Science. Sagan also wrote the best-selling science fiction novel Contact in 1985, based on a film treatment he wrote with his wife, Ann Druyan, in 1979, but he did not live to see the book's 1997 motion-picture adaptation, which starred Jodie Foster and won the 1998 Hugo Award for Best Dramatic Presentation.", "title": "Career and research" }, { "paragraph_id": 41, "text": "Sagan wrote a sequel to Cosmos, Pale Blue Dot: A Vision of the Human Future in Space, which was selected as a notable book of 1995 by The New York Times. He appeared on PBS's Charlie Rose program in January 1995. Sagan also wrote the introduction for Stephen Hawking's bestseller A Brief History of Time. Sagan was also known for his popularization of science, his efforts to increase scientific understanding among the general public, and his positions in favor of scientific skepticism and against pseudoscience, such as his debunking of the Betty and Barney Hill abduction. To mark the tenth anniversary of Sagan's death, David Morrison, a former student of Sagan, recalled \"Sagan's immense contributions to planetary research, the public understanding of science, and the skeptical movement\" in Skeptical Inquirer.", "title": "Career and research" }, { "paragraph_id": 42, "text": "Following Saddam Hussein's threats to light Kuwait's oil wells on fire in response to any physical challenge to Iraqi control of the oil assets, Sagan together with his \"TTAPS\" colleagues and Paul Crutzen, warned in January 1991 in The Baltimore Sun and Wilmington Morning Star newspapers that if the fires were left to burn over a period of several months, enough smoke from the 600 or so 1991 Kuwaiti oil fires \"might get so high as to disrupt agriculture in much of South Asia ...\" and that this possibility should \"affect the war plans\"; these claims were also the subject of a televised debate between Sagan and physicist Fred Singer on January 22, aired on the ABC News program Nightline.", "title": "Career and research" }, { "paragraph_id": 43, "text": "In the televised debate, Sagan argued that the effects of the smoke would be similar to the effects of a nuclear winter, with Singer arguing to the contrary. After the debate, the fires burnt for many months before extinguishing efforts were complete. The results of the smoke did not produce continental-sized cooling. Sagan later conceded in The Demon-Haunted World that the prediction did not turn out to be correct: \"it was pitch black at noon and temperatures dropped 4–6 °C over the Persian Gulf, but not much smoke reached stratospheric altitudes and Asia was spared.\"", "title": "Career and research" }, { "paragraph_id": 44, "text": "In his later years Sagan advocated the creation of an organized search for asteroids/near-Earth objects (NEOs) that might impact the Earth but to forestall or postpone developing the technological methods that would be needed to defend against them. He argued that all of the numerous methods proposed to alter the orbit of an asteroid, including the employment of nuclear detonations, created a deflection dilemma: if the ability to deflect an asteroid away from the Earth exists, then one would also have the ability to divert a non-threatening object towards Earth, creating an immensely destructive weapon. In a 1994 paper he co-authored, he ridiculed a 3-day long \"Near-Earth Object Interception Workshop\" held by Los Alamos National Laboratory (LANL) in 1993 that did not, \"even in passing\" state that such interception and deflection technologies could have these \"ancillary dangers.\"", "title": "Career and research" }, { "paragraph_id": 45, "text": "Sagan remained hopeful that the natural NEO impact threat and the intrinsically double-edged essence of the methods to prevent these threats would serve as a \"new and potent motivation to maturing international relations.\" Later acknowledging that, with sufficient international oversight, in the future a \"work our way up\" approach to implementing nuclear explosive deflection methods could be fielded, and when sufficient knowledge was gained, to use them to aid in mining asteroids. His interest in the use of nuclear detonations in space grew out of his work in 1958 for the Armour Research Foundation's Project A119, concerning the possibility of detonating a nuclear device on the lunar surface.", "title": "Career and research" }, { "paragraph_id": 46, "text": "Sagan was a critic of Plato, having said of the ancient Greek philosopher: \"Science and mathematics were to be removed from the hands of the merchants and the artisans. This tendency found its most effective advocate in a follower of Pythagoras named Plato\" and", "title": "Career and research" }, { "paragraph_id": 47, "text": "He (Plato) believed that ideas were far more real than the natural world. He advised the astronomers not to waste their time observing the stars and planets. It was better, he believed, just to think about them. Plato expressed hostility to observation and experiment. He taught contempt for the real world and disdain for the practical application of scientific knowledge. Plato's followers succeeded in extinguishing the light of science and experiment that had been kindled by Democritus and the other Ionians.", "title": "Career and research" }, { "paragraph_id": 48, "text": "In 1995 (as part of his book The Demon-Haunted World) Sagan popularized a set of tools for skeptical thinking called the \"baloney detection kit\", a phrase first coined by Arthur Felberbaum, a friend of his wife Ann Druyan.", "title": "Career and research" }, { "paragraph_id": 49, "text": "Speaking about his activities in popularizing science, Sagan said that there were at least two reasons for scientists to share the purposes of science and its contemporary state. Simple self-interest was one: much of the funding for science came from the public, and the public therefore had the right to know how the money was being spent. If scientists increased public admiration for science, there was a good chance of having more public supporters. The other reason was the excitement of communicating one's own excitement about science to others.", "title": "Career and research" }, { "paragraph_id": 50, "text": "Following the success of Cosmos, Sagan set up his own publishing firm, Cosmos Store, to publish science books for the general public. It was not successful.", "title": "Career and research" }, { "paragraph_id": 51, "text": "While Sagan was widely adored by the general public, his reputation in the scientific community was more polarized. Critics sometimes characterized his work as fanciful, non-rigorous, and self-aggrandizing, and others complained in his later years that he neglected his role as a faculty member to foster his celebrity status.", "title": "Career and research" }, { "paragraph_id": 52, "text": "One of Sagan's harshest critics, Harold Urey, felt that Sagan was getting too much publicity for a scientist and was treating some scientific theories too casually. Urey and Sagan were said to have different philosophies of science, according to Davidson. While Urey was an \"old-time empiricist\" who avoided theorizing about the unknown, Sagan was by contrast willing to speculate openly about such matters. Fred Whipple wanted Harvard to keep Sagan there, but learned that because Urey was a Nobel laureate, his opinion was an important factor in Harvard denying Sagan tenure.", "title": "Career and research" }, { "paragraph_id": 53, "text": "Sagan's Harvard friend Lester Grinspoon also stated: \"I know Harvard well enough to know there are people there who certainly do not like people who are outspoken.\" Grinspoon added:", "title": "Career and research" }, { "paragraph_id": 54, "text": "Wherever you turned, there was one astronomer being quoted on everything, one astronomer whose face you were seeing on TV, and one astronomer whose books had the preferred display slot at the local bookstore.", "title": "Career and research" }, { "paragraph_id": 55, "text": "Some, like Urey, later came to realize that Sagan's popular brand of scientific advocacy was beneficial to the science as a whole. Urey especially liked Sagan's 1977 book The Dragons of Eden and wrote Sagan with his opinion: \"I like it very much and am amazed that someone like you has such an intimate knowledge of the various features of the problem... I congratulate you... You are a man of many talents.\"", "title": "Career and research" }, { "paragraph_id": 56, "text": "Sagan was accused of borrowing some ideas of others for his own benefit and countered these claims by explaining that the misappropriation was an unfortunate side effect of his role as a science communicator and explainer, and that he attempted to give proper credit whenever possible.", "title": "Career and research" }, { "paragraph_id": 57, "text": "Sagan believed that the Drake equation, on substitution of reasonable estimates, suggested that a large number of extraterrestrial civilizations would form, but that the lack of evidence of such civilizations highlighted by the Fermi paradox suggests technological civilizations tend to self-destruct. This stimulated his interest in identifying and publicizing ways that humanity could destroy itself, with the hope of avoiding such a cataclysm and eventually becoming a spacefaring species. Sagan's deep concern regarding the potential destruction of human civilization in a nuclear holocaust was conveyed in a memorable cinematic sequence in the final episode of Cosmos, called \"Who Speaks for Earth?\" Sagan had already resigned from the Air Force Scientific Advisory Board's UFO-investigating Condon Committee and voluntarily surrendered his top-secret clearance in protest over the Vietnam War. Following his marriage to his third wife (novelist Ann Druyan) in June 1981, Sagan became more politically active—particularly in opposing escalation of the nuclear arms race under President Ronald Reagan.", "title": "Career and research" }, { "paragraph_id": 58, "text": "In March 1983, Reagan announced the Strategic Defense Initiative—a multibillion-dollar project to develop a comprehensive defense against attack by nuclear missiles, which was quickly dubbed the \"Star Wars\" program. Sagan spoke out against the project, arguing that it was technically impossible to develop a system with the level of perfection required, and far more expensive to build such a system than it would be for an enemy to defeat it through decoys and other means—and that its construction would seriously destabilize the \"nuclear balance\" between the United States and the Soviet Union, making further progress toward nuclear disarmament impossible.", "title": "Career and research" }, { "paragraph_id": 59, "text": "When Soviet leader Mikhail Gorbachev declared a unilateral moratorium on the testing of nuclear weapons, which would begin on August 6, 1985—the 40th anniversary of the atomic bombing of Hiroshima—the Reagan administration dismissed the dramatic move as nothing more than propaganda and refused to follow suit. In response, US anti-nuclear and peace activists staged a series of protest actions at the Nevada Test Site, beginning on Easter Sunday in 1986 and continuing through 1987. Hundreds of people in the \"Nevada Desert Experience\" group were arrested, including Sagan, who was arrested on two separate occasions as he climbed over a chain-link fence at the test site during the underground Operation Charioteer and United States's Musketeer nuclear test series of detonations.", "title": "Career and research" }, { "paragraph_id": 60, "text": "Sagan was also a vocal advocate of the controversial notion of testosterone poisoning, arguing in 1992 that human males could become gripped by an \"unusually severe [case of] testosterone poisoning\" and this could compel them to become genocidal. In his review of Moondance magazine writer Daniela Gioseffi's 1990 book Women on War, he argues that females are the only half of humanity \"untainted by testosterone poisoning.\" One chapter of his 1993 book Shadows of Forgotten Ancestors is dedicated to testosterone and its alleged poisonous effects.", "title": "Career and research" }, { "paragraph_id": 61, "text": "In 1989, Carl Sagan was interviewed by Ted Turner whether he believed in socialism and responded that: \"I'm not sure what a socialist is. But I believe the government has a responsibility to care for the people... I'm talking about making the people self-reliant.\"", "title": "Career and research" }, { "paragraph_id": 62, "text": "Sagan was married three times. In 1957, he married biologist Lynn Margulis. The couple had two children, Jeremy and Dorion Sagan; their marriage ended in 1964. Sagan married artist Linda Salzman in 1968 and they had a child together, Nick Sagan, and divorced in 1981. During these marriages, Carl Sagan focused heavily on his career, a factor which may have contributed to Sagan's first divorce. In 1981, Sagan married author Ann Druyan and they later had two children, Alexandra (known as Sasha) and Samuel Sagan. Carl Sagan and Druyan remained married until his death in 1996.", "title": "Personal life and beliefs" }, { "paragraph_id": 63, "text": "While teaching at Cornell, he lived in an Egyptian revival house in Ithaca perched on the edge of a cliff that had formerly been the headquarters of a Cornell secret society. While there he drove a red Porsche 911 Targa and an orange 1970 Porsche 914 with the license plate PHOBOS.", "title": "Personal life and beliefs" }, { "paragraph_id": 64, "text": "In 1994, engineers at Apple Computer code-named the Power Macintosh 7100 \"Carl Sagan\" in the hope that Apple would make \"billions and billions\" with the sale of the PowerMac 7100. The name was only used internally, but Sagan was concerned that it would become a product endorsement and sent Apple a cease-and-desist letter. Apple complied, but engineers retaliated by changing the internal codename to \"BHA\" for \"Butt-Head Astronomer.\" In November 1995, after further legal battle, an out-of-court settlement was reached and Apple's office of trademarks and patents released a conciliatory statement that \"Apple has always had great respect for Dr. Sagan. It was never Apple's intention to cause Dr. Sagan or his family any embarrassment or concern.\"", "title": "Personal life and beliefs" }, { "paragraph_id": 65, "text": "In 2019, Carl Sagan's daughter Sasha Sagan released For Small Creatures Such as We: Rituals for Finding Meaning in our Unlikely World, which depicts life with her parents and her father's death when she was fourteen. Building on a theme in her father's work, Sasha Sagan argues in For Small Creatures Such as We that skepticism does not imply pessimism.", "title": "Personal life and beliefs" }, { "paragraph_id": 66, "text": "I have just finished The Cosmic Connection and loved every word of it. You are my idea of a good writer because you have an unmannered style, and when I read what you write, I hear you talking. One thing about the book made me nervous. It was entirely too obvious that you are smarter than I am. I hate that.", "title": "Personal life and beliefs" }, { "paragraph_id": 67, "text": "Isaac Asimov, in a letter to Sagan, 1973", "title": "Personal life and beliefs" }, { "paragraph_id": 68, "text": "Sagan was acquainted with the science fiction fandom through his friendship with Isaac Asimov, and he spoke at the Nebula Awards ceremony in 1969. Asimov described Sagan as one of only two people he ever met whose intellect surpassed his own, the other being computer scientist and artificial intelligence expert Marvin Minsky.", "title": "Personal life and beliefs" }, { "paragraph_id": 69, "text": "Sagan wrote frequently about religion and the relationship between religion and science, expressing his skepticism about the conventional conceptualization of God as a sapient being. For example:", "title": "Personal life and beliefs" }, { "paragraph_id": 70, "text": "Some people think God is an outsized, light-skinned male with a long white beard, sitting on a throne somewhere up there in the sky, busily tallying the fall of every sparrow. Others—for example Baruch Spinoza and Albert Einstein—considered God to be essentially the sum total of the physical laws which describe the universe. I do not know of any compelling evidence for anthropomorphic patriarchs controlling human destiny from some hidden celestial vantage point, but it would be madness to deny the existence of physical laws.", "title": "Personal life and beliefs" }, { "paragraph_id": 71, "text": "In another description of his view on the concept of God, Sagan wrote:", "title": "Personal life and beliefs" }, { "paragraph_id": 72, "text": "The idea that God is an oversized white male with a flowing beard who sits in the sky and tallies the fall of every sparrow is ludicrous. But if by God one means the set of physical laws that govern the universe, then clearly there is such a God. This God is emotionally unsatisfying ... it does not make much sense to pray to the law of gravity.", "title": "Personal life and beliefs" }, { "paragraph_id": 73, "text": "On atheism, Sagan commented in 1981:", "title": "Personal life and beliefs" }, { "paragraph_id": 74, "text": "An atheist is someone who is certain that God does not exist, someone who has compelling evidence against the existence of God. I know of no such compelling evidence. Because God can be relegated to remote times and places and to ultimate causes, we would have to know a great deal more about the universe than we do now to be sure that no such God exists. To be certain of the existence of God and to be certain of the nonexistence of God seem to me to be the confident extremes in a subject so riddled with doubt and uncertainty as to inspire very little confidence indeed.", "title": "Personal life and beliefs" }, { "paragraph_id": 75, "text": "Sagan also commented on Christianity and the Jefferson Bible, stating \"My long-time view about Christianity is that it represents an amalgam of two seemingly immiscible parts, the religion of Jesus and the religion of Paul. Thomas Jefferson attempted to excise the Pauline parts of the New Testament. There wasn't much left when he was done, but it was an inspiring document.\"", "title": "Personal life and beliefs" }, { "paragraph_id": 76, "text": "Sagan thought that spirituality should be scientifically informed and that traditional religions should be abandoned and replaced with belief systems that revolve around the scientific method, but also the mystery and incompleteness of scientific fields. Regarding spirituality and its relationship with science, Sagan stated:", "title": "Personal life and beliefs" }, { "paragraph_id": 77, "text": "'Spirit' comes from the Latin word 'to breathe'. What we breathe is air, which is certainly matter, however thin. Despite usage to the contrary, there is no necessary implication in the word 'spiritual' that we are talking of anything other than matter (including the matter of which the brain is made), or anything outside the realm of science. On occasion, I will feel free to use the word. Science is not only compatible with spirituality; it is a profound source of spirituality. When we recognize our place in an immensity of light-years and in the passage of ages, when we grasp the intricacy, beauty, and subtlety of life, then that soaring feeling, that sense of elation and humility combined, is surely spiritual.", "title": "Personal life and beliefs" }, { "paragraph_id": 78, "text": "An environmental appeal, \"Preserving and Cherishing the Earth\", primarily written by Sagan and signed by him and other noted scientists as well as religious leaders, and published in January 1990, stated that \"The historical record makes clear that religious teaching, example, and leadership are powerfully able to influence personal conduct and commitment... Thus, there is a vital role for religion and science.\"", "title": "Personal life and beliefs" }, { "paragraph_id": 79, "text": "In reply to a question in 1996 about his religious beliefs, Sagan answered, \"I'm agnostic.\" Sagan maintained that the idea of a creator God of the Universe was difficult to prove or disprove and that the only conceivable scientific discovery that could challenge it would be an infinitely old universe. His son, Dorion Sagan said, \"My father believed in the God of Spinoza and Einstein, God not behind nature but as nature, equivalent to it.\" His last wife, Ann Druyan, stated:", "title": "Personal life and beliefs" }, { "paragraph_id": 80, "text": "When my husband died, because he was so famous and known for not being a believer, many people would come up to me—it still sometimes happens—and ask me if Carl changed at the end and converted to a belief in an afterlife. They also frequently ask me if I think I will see him again. Carl faced his death with unflagging courage and never sought refuge in illusions. The tragedy was that we knew we would never see each other again. I don't ever expect to be reunited with Carl.", "title": "Personal life and beliefs" }, { "paragraph_id": 81, "text": "In 2006, Ann Druyan edited Sagan's 1985 Glasgow Gifford Lectures in Natural Theology into a book, The Varieties of Scientific Experience: A Personal View of the Search for God, in which he elaborates on his views of divinity in the natural world.", "title": "Personal life and beliefs" }, { "paragraph_id": 82, "text": "Sagan is also widely regarded as a freethinker or skeptic; one of his most famous quotations, in Cosmos, was, \"Extraordinary claims require extraordinary evidence\" (called the \"Sagan standard\" by some). This was based on a nearly identical statement by fellow founder of the Committee for the Scientific Investigation of Claims of the Paranormal, Marcello Truzzi, \"An extraordinary claim requires extraordinary proof.\" This idea had been earlier aphorized in Théodore Flournoy's work From India to the Planet Mars (1899) from a longer quote by Pierre-Simon Laplace (1749–1827), a French mathematician and astronomer, as the Principle of Laplace: \"The weight of the evidence should be proportioned to the strangeness of the facts.\"", "title": "Personal life and beliefs" }, { "paragraph_id": 83, "text": "Late in his life, Sagan's books elaborated on his naturalistic view of the world. In The Demon-Haunted World, he presented tools for testing arguments and detecting fallacious or fraudulent ones, essentially advocating the wide use of critical thinking and of the scientific method. The compilation Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium, published in 1997 after Sagan's death, contains essays written by him, on topics such as his views on abortion, and also an essay by his widow, Ann Druyan, about the relationship between his agnostic and freethinking beliefs and his death.", "title": "Personal life and beliefs" }, { "paragraph_id": 84, "text": "Sagan warned against humans' tendency towards anthropocentrism. He was the faculty adviser for the Cornell Students for the Ethical Treatment of Animals. In the Cosmos chapter \"Blues For a Red Planet\", Sagan wrote, \"If there is life on Mars, I believe we should do nothing with Mars. Mars then belongs to the Martians, even if the Martians are only microbes.\"", "title": "Personal life and beliefs" }, { "paragraph_id": 85, "text": "Sagan was a user and advocate of marijuana. Under the pseudonym \"Mr. X\", he contributed an essay about smoking cannabis to the 1971 book Marihuana Reconsidered. The essay explained that marijuana use had helped to inspire some of Sagan's works and enhance sensual and intellectual experiences. After Sagan's death, his friend Lester Grinspoon disclosed this information to Sagan's biographer, Keay Davidson. The publishing of the biography, Carl Sagan: A Life, in 1999 brought media attention to this aspect of Sagan's life. Not long after his death, his widow Ann Druyan went on to preside over the board of directors of the National Organization for the Reform of Marijuana Laws (NORML), a non-profit organization dedicated to reforming cannabis laws.", "title": "Personal life and beliefs" }, { "paragraph_id": 86, "text": "In 1947, the year that inaugurated the \"flying saucer\" craze, the young Sagan suspected the \"discs\" might be alien spaceships.", "title": "Personal life and beliefs" }, { "paragraph_id": 87, "text": "Sagan's interest in UFO reports prompted him on August 3, 1952, to write a letter to U.S. Secretary of State Dean Acheson to ask how the United States would respond if flying saucers turned out to be extraterrestrial. He later had several conversations on the subject in 1964 with Jacques Vallée. Though quite skeptical of any extraordinary answer to the UFO question, Sagan thought scientists should study the phenomenon, at least because there was widespread public interest in UFO reports.", "title": "Personal life and beliefs" }, { "paragraph_id": 88, "text": "Stuart Appelle notes that Sagan \"wrote frequently on what he perceived as the logical and empirical fallacies regarding UFOs and the abduction experience. Sagan rejected an extraterrestrial explanation for the phenomenon but felt there were both empirical and pedagogical benefits for examining UFO reports and that the subject was, therefore, a legitimate topic of study.\"", "title": "Personal life and beliefs" }, { "paragraph_id": 89, "text": "In 1966, Sagan was a member of the Ad Hoc Committee to Review Project Blue Book, the U.S. Air Force's UFO investigation project. The committee concluded Blue Book had been lacking as a scientific study, and recommended a university-based project to give the UFO phenomenon closer scientific scrutiny. The result was the Condon Committee (1966–68), led by physicist Edward Condon, and in their final report they formally concluded that UFOs, regardless of what any of them actually were, did not behave in a manner consistent with a threat to national security.", "title": "Personal life and beliefs" }, { "paragraph_id": 90, "text": "Sociologist Ron Westrum writes that \"The high point of Sagan's treatment of the UFO question was the AAAS' symposium in 1969. A wide range of educated opinions on the subject were offered by participants, including not only proponents such as James McDonald and J. Allen Hynek but also skeptics like astronomers William Hartmann and Donald Menzel. The roster of speakers was balanced, and it is to Sagan's credit that this event was presented in spite of pressure from Edward Condon.\" With physicist Thornton Page, Sagan edited the lectures and discussions given at the symposium; these were published in 1972 as UFO's: A Scientific Debate. Some of Sagan's many books examine UFOs (as did one episode of Cosmos) and he claimed a religious undercurrent to the phenomenon.", "title": "Personal life and beliefs" }, { "paragraph_id": 91, "text": "Sagan again revealed his views on interstellar travel in his 1980 Cosmos series. In one of his last written works, Sagan argued that the chances of extraterrestrial spacecraft visiting Earth are vanishingly small. However, Sagan did think it plausible that Cold War concerns contributed to governments misleading their citizens about UFOs, and wrote that \"some UFO reports and analyses, and perhaps voluminous files, have been made inaccessible to the public which pays the bills ... It's time for the files to be declassified and made generally available.\" He cautioned against jumping to conclusions about suppressed UFO data and stressed that there was no strong evidence that aliens were visiting the Earth either in the past or present.", "title": "Personal life and beliefs" }, { "paragraph_id": 92, "text": "Sagan briefly served as an adviser on Stanley Kubrick's film 2001: A Space Odyssey. Sagan proposed that the film suggest, rather than depict, extraterrestrial superintelligence.", "title": "Personal life and beliefs" }, { "paragraph_id": 93, "text": "Sagan's contribution to the 1969 AAAS symposium was an attack on the belief that UFOs are piloted by extraterrestrial beings. Using the Drake equation and applying several logical assumptions, Sagan calculated the possible number of advanced civilizations capable of interstellar travel to be about one million. He projected that any civilization wishing to check on all the others on a regular basis of, say, once a year would have to launch 10,000 spacecraft annually. Not only does that seem like an unreasonable number of launchings, but it would take all the material in one percent of the universe's stars to produce all the spaceships needed for all the civilizations to seek each other out.", "title": "Personal life and beliefs" }, { "paragraph_id": 94, "text": "To argue that the Earth was being chosen for regular visitations, Sagan said, one would have to assume that the planet is somehow unique, and that assumption \"goes exactly against the idea that there are lots of civilizations around. Because if there are then our sort of civilization must be pretty common. And if we're not pretty common then there aren't going to be many civilizations advanced enough to send visitors.\"", "title": "Personal life and beliefs" }, { "paragraph_id": 95, "text": "This argument, which some called Sagan's paradox, helped to establish a new school of thought, namely the belief that extraterrestrial life exists, but it has nothing to do with UFOs. The new belief had a salutary effect on UFO studies. It helped separate researchers who wanted to distinguish UFOs from those who wanted to identify their pilots and it gave scientists opportunities to search the universe for intelligent life unencumbered by the stigma associated with UFOs.", "title": "Personal life and beliefs" }, { "paragraph_id": 96, "text": "After suffering from myelodysplasia for two years and receiving three bone marrow transplants from his sister, Sagan died from pneumonia at the age of 62 at the Fred Hutchinson Cancer Research Center in Seattle on December 20, 1996. He was buried at Lake View Cemetery in Ithaca, New York.", "title": "Death" }, { "paragraph_id": 97, "text": "The 1997 film Contact was based on the only novel Sagan wrote and finished after his death. It ends with the dedication \"For Carl.\" His photo can also be seen in the film.", "title": "Awards and honors" }, { "paragraph_id": 98, "text": "In 1997, the Sagan Planet Walk was opened in Ithaca, New York. It is a walking-scale model of the Solar System, extending 1.2 km from the center of The Commons in downtown Ithaca to the Sciencenter, a hands-on museum. The exhibition was created in memory of Carl Sagan, who was an Ithaca resident and Cornell Professor. Professor Sagan had been a founding member of the museum's advisory board.", "title": "Awards and honors" }, { "paragraph_id": 99, "text": "The landing site of the uncrewed Mars Pathfinder spacecraft was renamed the Carl Sagan Memorial Station on July 5, 1997.", "title": "Awards and honors" }, { "paragraph_id": 100, "text": "Asteroid 2709 Sagan is named in his honor, as is the Carl Sagan Institute for the search of habitable planets.", "title": "Awards and honors" }, { "paragraph_id": 101, "text": "Sagan's son, Nick Sagan, wrote several episodes in the Star Trek franchise. In an episode of Star Trek: Enterprise entitled \"Terra Prime\", a quick shot is shown of the relic rover Sojourner, part of the Mars Pathfinder mission, placed by a historical marker at Carl Sagan Memorial Station on the Martian surface. The marker displays a quote from Sagan: \"Whatever the reason you're on Mars, I'm glad you're there, and I wish I was with you.\" Sagan's student Steve Squyres led the team that landed the rovers Spirit and Opportunity successfully on Mars in 2004.", "title": "Awards and honors" }, { "paragraph_id": 102, "text": "On November 9, 2001, on what would have been Sagan's 67th birthday, the Ames Research Center dedicated the site for the Carl Sagan Center for the Study of Life in the Cosmos. \"Carl was an incredible visionary, and now his legacy can be preserved and advanced by a 21st century research and education laboratory committed to enhancing our understanding of life in the universe and furthering the cause of space exploration for all time\", said NASA Administrator Daniel Goldin. Ann Druyan was at the center as it opened its doors on October 22, 2006.", "title": "Awards and honors" }, { "paragraph_id": 103, "text": "Sagan has at least three awards named in his honor:", "title": "Awards and honors" }, { "paragraph_id": 104, "text": "August 2007 the Independent Investigations Group (IIG) awarded Sagan posthumously a Lifetime Achievement Award. This honor has also been awarded to Harry Houdini and James Randi.", "title": "Awards and honors" }, { "paragraph_id": 105, "text": "In September 2008, a musical compositor Benn Jordan released his album Pale Blue Dot as a tribute to Carl Sagan's life.", "title": "Awards and honors" }, { "paragraph_id": 106, "text": "Beginning in 2009, a musical project known as Symphony of Science sampled several excerpts of Sagan from his series Cosmos and remixed them to electronic music. To date, the videos have received over 21 million views worldwide on YouTube.", "title": "Awards and honors" }, { "paragraph_id": 107, "text": "The 2014 Swedish science fiction short film Wanderers uses excerpts of Sagan's narration in 1994 of his book Pale Blue Dot, played over digitally-created visuals of humanity's possible future expansion into outer space.", "title": "Awards and honors" }, { "paragraph_id": 108, "text": "In February 2015, the Finnish-based symphonic metal band Nightwish released the song \"Sagan\" as a non-album bonus track for their single \"Élan.\" The song, written by the band's songwriter/composer/keyboardist Tuomas Holopainen, is an homage to the life and work of the late Carl Sagan.", "title": "Awards and honors" }, { "paragraph_id": 109, "text": "In August 2015, it was announced that a biopic of Sagan's life was being planned by Warner Bros.", "title": "Awards and honors" }, { "paragraph_id": 110, "text": "On October 21, 2019, the Carl Sagan and Ann Druyan Theater was opened at the Center for Inquiry West in Los Angeles.", "title": "Awards and honors" }, { "paragraph_id": 111, "text": "In 2022, Sagan was posthumously awarded the Future of Life Award \"for reducing the risk of nuclear war by developing and popularizing the science of nuclear winter.\" The honor, shared by seven other recipients involved in nuclear winter research, was accepted by his widow, Ann Druyan.", "title": "Awards and honors" }, { "paragraph_id": 112, "text": "In 2022, the audiobook recording of Sagan's 1994 book Pale Blue Dot was selected by the U.S. Library of Congress for inclusion in the National Recording Registry for being \"culturally, historically, or aesthetically significant.\"", "title": "Awards and honors" }, { "paragraph_id": 113, "text": "In 2023, a movie Voyagers by Sebastián Lelio was announced with Sagan played by Andrew Garfield and with Daisy Edgar-Jones playing Sagan's 3rd wife, Ann Druyan.", "title": "Awards and honors" } ]	Carl Edward Sagan was an American astronomer and science communicator. His best known scientific contribution is his research on the possibility of extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by exposure to light. He assembled the first physical messages sent into space, the Pioneer plaque and the Voyager Golden Record, which were universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. He argued in favor of the hypothesis, which has since been accepted, that the high surface temperatures of Venus are the result of the greenhouse effect. Initially an assistant professor at Harvard, Sagan later moved to Cornell, where he spent most of his career. He published more than 600 scientific papers and articles and was author, co-author or editor of more than 20 books. He wrote many popular science books, such as The Dragons of Eden, Broca's Brain, Pale Blue Dot and The Demon-Haunted World. He also co-wrote and narrated the award-winning 1980 television series Cosmos: A Personal Voyage, which became the most widely watched series in the history of American public television: Cosmos has been seen by at least 500 million people in 60 countries. A book, also called Cosmos, was published to accompany the series. Sagan also wrote a science-fiction novel, published in 1985, called Contact, which became the basis for a 1997 film of the same name. His papers, comprising 595,000 items, are archived in the Library of Congress. Sagan was a popular public advocate of skeptical scientific inquiry and the scientific method; he pioneered the field of exobiology and promoted the search for extra-terrestrial intelligent life (SETI). He spent most of his career as a professor of astronomy at Cornell University, where he directed the Laboratory for Planetary Studies. Sagan and his works received numerous awards and honors, including the NASA Distinguished Public Service Medal, the National Academy of Sciences Public Welfare Medal, the Pulitzer Prize for General Non-Fiction, and, two Emmy Awards, the Peabody Award, and the Hugo Award. He married three times and had five children. After developing myelodysplasia, Sagan died of pneumonia at the age of 62 on December 20, 1996.	2001-11-09T21:23:41Z	2023-12-29T06:52:18Z	[ "Template:Discogs artist", "Template:Clarify", "Template:As of", "Template:Cite book", "Template:Web archive", "Template:Cite AV media", "Template:Library resources box", "Template:Carl Sagan", "Template:Citation", "Template:Cite podcast", "Template:Portal bar", "Template:Official website", "Template:Imdb name", "Template:Short description", "Template:IPAc-en", "Template:Respell", "Template:Efn", "Template:Cite interview", "Template:Cbignore", "Template:Authority control", "Template:Refend", "Template:Cite magazine", "Template:Cite web", "Template:IMDb name", "Template:Spaced ndash", "Template:Sfn", "Template:Blockquote", "Template:Date?", "Template:Reflist", "Template:MathGenealogy", "Template:Navboxes", "Template:Refbegin", "Template:Cite journal", "Template:Otheruses", "Template:Infobox scientist", "Template:Quote box", "Template:Citation needed", "Template:Convert", "Template:'\"", "Template:Clear", "Template:Cite thesis", "Template:Cite encyclopedia", "Template:Cite episode", "Template:Use mdy dates", "Template:Anchor", "Template:R", "Template:Notelist", "Template:Cite news", "Template:Webarchive", "Template:Sister project links", "Template:Scholia" ]	https://en.wikipedia.org/wiki/Carl_Sagan
6,827	Cuban Missile Crisis	The Cuban Missile Crisis, in Russian known as the Caribbean Crisis (Карибский кризис) and in Cuba as the October Crisis (Spanish: Crisis de Octubre), was a 13-day confrontation between the United States and the Soviet Union, when American deployments of nuclear missiles in Italy and Turkey were matched by Soviet deployments of nuclear missiles in Cuba. The crisis lasted from 16 to 28 October 1962. The confrontation is widely considered the closest the Cold War came to escalating into full-scale nuclear war. In 1961, the US government put Jupiter nuclear missiles in Italy and Turkey. It had also trained a paramilitary force of Cuban exiles, which the CIA led in an attempt to invade Cuba and overthrow its government. Starting in November of that year, the US government engaged in a violent campaign of terrorism and sabotage in Cuba, referred to as the Cuban Project, which continued throughout the first half of the 1960s. The Soviet administration was concerned about a Cuban drift towards China, with which the Soviets had an increasingly fractious relationship. In response to these factors, Soviet First Secretary, Nikita Khrushchev, agreed with the Cuban Prime Minister, Fidel Castro, to place nuclear missiles on the island of Cuba to deter a future invasion. An agreement was reached during a secret meeting between Khrushchev and Castro in July 1962, and construction of a number of missile launch facilities started later that summer. During the campaigning for the 1962 United States elections, the White House denied the charges for months and ignored the presence of Soviet missiles positioned approximately 90 mi (140 km) away from Florida. Later, the missile preparations were confirmed when a US Air Force U-2 spy plane produced clear photographic evidence of medium-range R-12 (NATO code name SS-4) and intermediate-range R-14 (NATO code name SS-5) ballistic missile facilities. When this was reported to President John F. Kennedy, he then convened a meeting of the nine members of the National Security Council and five other key advisers, in a group that became known as the Executive Committee of the National Security Council (EXCOMM). During this meeting, President Kennedy was originally advised to carry out an air strike on Cuban soil in order to compromise Soviet missile supplies, followed by an invasion of the Cuban mainland. After careful consideration, President Kennedy chose a less aggressive course of action, in order to avoid a declaration of war. After consultation with EXCOMM, Kennedy ordered a naval "quarantine" on 22 October to prevent further missiles from reaching Cuba. By using the term "quarantine", rather than "blockade" (an act of war by legal definition), the United States was able to avoid the implications of a state of war. The US announced it would not permit offensive weapons to be delivered to Cuba and demanded that the weapons already in Cuba be dismantled and returned to the Soviet Union. After several days of tense negotiations, an agreement was reached between Kennedy and Khrushchev: publicly, the Soviets would dismantle their offensive weapons in Cuba and return them to the Soviet Union, subject to United Nations verification, in exchange for a US public declaration and agreement to not invade Cuba again. Secretly, the United States agreed with the Soviets that it would dismantle all of the Jupiter MRBMs which had been deployed to Turkey against the Soviet Union. There has been debate on whether Italy was included in the agreement as well. While the Soviets dismantled their missiles, some Soviet bombers remained in Cuba, and the United States kept the naval quarantine in place until 20 November 1962. When all offensive missiles and the Ilyushin Il-28 light bombers had been withdrawn from Cuba, the blockade was formally ended on 20 November. The negotiations between the United States and the Soviet Union pointed out the necessity of a quick, clear, and direct communication line between the two superpowers. As a result, the Moscow–Washington hotline was established. A series of agreements later reduced US–Soviet tensions for several years, until both parties eventually resumed expanding their nuclear arsenals. The compromise embarrassed Khrushchev and the Soviet Union because the withdrawal of US missiles from Italy and Turkey was a secret deal between Kennedy and Khrushchev, and the Soviets were seen as retreating from circumstances that they had started. Khrushchev's fall from power two years later was in part because of the Soviet Politburo's embarrassment at both Khrushchev's eventual concessions to the US and his ineptitude in precipitating the crisis in the first place. According to Dobrynin, the top Soviet leadership took the Cuban outcome as "a blow to its prestige bordering on humiliation". In late 1961, Fidel Castro asked for more SA-2 anti-aircraft missiles from the Soviet Union. The request was not acted upon by the Soviet leadership. In the interval Fidel Castro began criticizing the Soviets for lack of "revolutionary boldness", and began talking to China about agreements for economic assistance. In March 1962, Fidel Castro ordered the ousting of Anibal Escalante and his pro-Moscow comrades from Cuba's Integrated Revolutionary Organizations. This affair alarmed the Soviet leadership as well as fears of a possible US invasion. In this crisis of international relations the Soviet Union sent more SA-2 anti-aircraft missiles in April as well as a regiment of regular Soviet troops. Timothy Naftali has contended that Escalante's dismissal was a motivating factor behind the Soviet decision to place nuclear missiles in Cuba in 1962. According to Naftali, Soviet foreign policy planners were concerned Castro's break with Escalante foreshadowed a Cuban drift toward China and sought to solidify the Soviet-Cuban relationship through the missile basing program. The Cuban government regarded US imperialism as the primary explanation for the island's structural weaknesses. The US government had provided arms, money and its authority to the Batista dictatorship. The majority of the Cuban population had tired of the severe socioeconomic problems associated with the US domination of the country. The Cuban government was aware of the necessity of ending the turmoil and incongruities of US-dominated prerevolution Cuban society. It determined that the US government's demands, made as part of the hostile US reaction to Cuban government policy, were unacceptable. With the end of World War II and the start of the Cold War, the United States government sought to promote private enterprise as an instrument for advancing US strategic interests in the developing world. It had grown concerned about the expansion of communism. In December 1959, under the Eisenhower administration and less than twelve months after the Cuban Revolution, the Central Intelligence Agency (CIA) developed a plan for paramilitary action against Cuba. The CIA recruited operatives on the island to carry out terrorism and sabotage, kill civilians, and cause economic damage. At the initiative of the CIA Deputy Director for Plans, Richard Bissell, and approved by the new President John F. Kennedy, the US launched the attempted Bay of Pigs Invasion of Cuba in April 1961. It used CIA-trained forces of Cuban expatriates. The complete failure of the invasion, and the exposure of the US government role before the operation began, was a source of diplomatic embarrassment for the administration. Afterward, former President Eisenhower told Kennedy that "the failure of the Bay of Pigs will embolden the Soviets to do something that they would otherwise not do." Following the failed invasion, the US massively escalated its sponsorship of terrorism against Cuba. In late 1961, using the military and the Central Intelligence Agency, the US government engaged in an extensive campaign of state-sponsored terrorism against civilian and military targets on the island. The terrorist attacks killed significant numbers of civilians. The US armed, trained, funded and directed the terrorists, most of whom were Cuban expatriates. Terrorist attacks were planned at the direction and with the participation of US government employees and launched from US territory. In January 1962, US Air Force General Edward Lansdale described the plans to overthrow the Cuban government in a top-secret report, addressed to Kennedy and officials involved with Operation Mongoose. CIA agents or "pathfinders" from the Special Activities Division were to be infiltrated into Cuba to carry out sabotage and organization, including radio broadcasts. In February 1962, the US launched an embargo against Cuba, and Lansdale presented a 26-page, top-secret timetable for implementation of the overthrow of the Cuban government, mandating guerrilla operations to begin in August and September. "Open revolt and overthrow of the Communist regime" was hoped by the planners to occur in the first two weeks of October. The terrorism campaign and the threat of invasion were crucial factors in the Soviet decision to position the missiles on Cuba, and in the Cuban government's decision to accept. The US government was aware at the time, as reported to the president in a National Intelligence Estimate, that the invasion threat was a key reason for Cuban acceptance of the missiles. When Kennedy ran for president in 1960, one of his key election issues was an alleged "missile gap" with the Soviets. In fact, the US at that time led the Soviets by a wide margin, which would only increase over time. In 1961, the Soviets had only four R-7 Semyorka intercontinental ballistic missiles (ICBMs). By October 1962, some intelligence estimates indicated a figure of 75. The US, on the other hand, had 170 ICBMs and was quickly building more. It also had eight George Washington- and Ethan Allen-class ballistic missile submarines, with the capability to launch 16 Polaris missiles, each with a range of 2,500 nautical miles (4,600 km). Khrushchev increased the perception of a missile gap when he loudly boasted to the world that the Soviets were building missiles "like sausages" but Soviet missiles' numbers and capabilities were nowhere close to his assertions. The Soviet Union had medium-range ballistic missiles in quantity, about 700 of them, but they were unreliable and inaccurate. The US had a considerable advantage in its total number of nuclear warheads (27,000 against 3,600) and in the technology required for their accurate delivery. The US also led in missile defensive capabilities, naval and air power; however, the Soviets held a two-to-one advantage in conventional ground forces, more pronounced in field guns and tanks, particularly in the European theatre. The Soviet First Secretary, Nikita Khrushchev, also had an impression of Kennedy as weak, which to him was confirmed by the President's response during the Berlin Crisis of 1961, particularly to the building of the Berlin Wall by East Germany to prevent its citizens from emigrating to the West. The half-hearted nature of the Bay of Pigs invasion reinforced Khrushchev and his advisers impression that Kennedy was indecisive and, as one Soviet aide wrote, "too young, intellectual, not prepared well for decision making in crisis situations... too intelligent and too weak". Speaking to Soviet officials in the aftermath of the crisis, Khrushchev asserted, "I know for certain that Kennedy doesn't have a strong background, nor, generally speaking, does he have the courage to stand up to a serious challenge." He also told his son Sergei that on Cuba, Kennedy "would make a fuss, make more of a fuss, and then agree". In May 1962, Soviet First Secretary Nikita Khrushchev was persuaded by the idea of countering the US's growing lead in developing and deploying strategic missiles by placing Soviet intermediate-range nuclear missiles in Cuba, despite the misgivings of the Soviet Ambassador in Havana, Alexandr Ivanovich Alexeyev, who argued that Castro would not accept the deployment of the missiles. Khrushchev faced a strategic situation in which the US was perceived to have a "splendid first strike" capability that put the Soviet Union at a huge disadvantage. In 1962, the Soviets had only 20 ICBMs capable of delivering nuclear warheads to the US from inside the Soviet Union. The poor accuracy and reliability of the missiles raised serious doubts about their effectiveness. A newer, more reliable generation of ICBMs would become operational only after 1965. Therefore, Soviet nuclear capability in 1962 placed less emphasis on ICBMs than on medium and intermediate-range ballistic missiles (MRBMs and IRBMs). The missiles could hit American allies and most of Alaska from Soviet territory but not the contiguous United States. Graham Allison, the director of Harvard University's Belfer Center for Science and International Affairs, points out, "The Soviet Union could not right the nuclear imbalance by deploying new ICBMs on its own soil. In order to meet the threat it faced in 1962, 1963, and 1964, it had very few options. Moving existing nuclear weapons to locations from which they could reach American targets was one." A second reason that Soviet missiles were deployed to Cuba was that Khrushchev wanted to bring West Berlin, controlled by the American, British and French within Communist East Germany, into the Soviet orbit. The East Germans and Soviets considered western control over a portion of Berlin a grave threat to East Germany. Khrushchev made West Berlin the central battlefield of the Cold War. Khrushchev believed that if the US did nothing over the missile deployments in Cuba, he could muscle the West out of Berlin using said missiles as a deterrent to western countermeasures in Berlin. If the US tried to bargain with the Soviets after it became aware of the missiles, Khrushchev could demand trading the missiles for West Berlin. Since Berlin was strategically more important than Cuba, the trade would be a win for Khrushchev, as Kennedy recognized: "The advantage is, from Khrushchev's point of view, he takes a great chance but there are quite some rewards to it." Thirdly, from the perspective of the Soviet Union and of Cuba, it seemed that the United States wanted to increase its presence in Cuba. In view of actions including the attempt to expel Cuba from the Organization of American States, placing economic sanctions on the nation, directly invading it, and the ongoing campaign of terrorism and sabotage the CIA was carrying out against the island, Cuban officials understood that America was trying to overrun Cuba. As a result, to try to prevent this, the USSR would place missiles in Cuba and neutralise the threat. This would ultimately serve to secure Cuba against attack and keep the country in the Socialist Bloc. Another major reason why Khrushchev planned to place missiles on Cuba undetected was to "level the playing field" with the evident American nuclear threat. America had the upper hand as they could launch from Turkey and destroy the USSR before they would have a chance to react. After the emplacement of nuclear missiles in Cuba, Khrushchev had finally established mutual assured destruction, meaning that if the United States decided to launch a nuclear strike against the Soviet Union, the latter would react by launching a retaliatory nuclear strike against the US. Finally, placing nuclear missiles on Cuba was a way for the USSR to show their support for Cuba and support the Cuban people who viewed the United States as a threatening force, as the latter had become their ally after the Cuban Revolution of 1959. According to Khrushchev, the Soviet Union's motives were "aimed at allowing Cuba to live peacefully and develop as its people desire". Schlesinger, a historian and adviser to Kennedy, told National Public Radio in an interview on 16 October 2002, that Castro did not want the missiles, but Khrushchev pressured Castro to accept them. Castro was not completely happy with the idea, but the Cuban National Directorate of the Revolution accepted them, both to protect Cuba against US attack and to aid the Soviet Union. In early 1962, a group of Soviet military and missile construction specialists accompanied an agricultural delegation to Havana. They obtained a meeting with Cuban prime minister Fidel Castro. The Cuban leadership had a strong expectation that the US would invade Cuba again and enthusiastically approved the idea of installing nuclear missiles in Cuba. According to another source, Castro objected to the missiles' deployment as making him look like a Soviet puppet, but he was persuaded that missiles in Cuba would be an irritant to the US and help the interests of the entire socialist camp. The deployment would include short-range tactical weapons (with a range of 40 km, usable only against naval vessels) that would provide a "nuclear umbrella" for attacks upon the island. By May, Khrushchev and Castro agreed to place strategic nuclear missiles secretly in Cuba. Like Castro, Khrushchev felt that a US invasion of Cuba was imminent and that to lose Cuba would do great harm to the communists, especially in Latin America. He said he wanted to confront the Americans "with more than words.... the logical answer was missiles". The Soviets maintained their tight secrecy, writing their plans longhand, which were approved by Marshal of the Soviet Union Rodion Malinovsky on 4 July and Khrushchev on 7 July. From the very beginning, the Soviets' operation entailed elaborate denial and deception, known as "maskirovka". All the planning and preparation for transporting and deploying the missiles were carried out in the utmost secrecy, with only a very few told the exact nature of the mission. Even the troops detailed for the mission were given misdirection by being told that they were headed for a cold region and being outfitted with ski boots, fleece-lined parkas, and other winter equipment. The Soviet code-name was Operation Anadyr. The Anadyr River flows into the Bering Sea, and Anadyr is also the capital of Chukotsky District and a bomber base in the far eastern region. All the measures were meant to conceal the program from both internal and external audiences. Specialists in missile construction, under the guise of machine operators and agricultural specialists, arrived in July. A total of 43,000 foreign troops would ultimately be brought in. Chief Marshal of Artillery Sergei Biryuzov, Head of the Soviet Rocket Forces, led a survey team that visited Cuba. He told Khrushchev that the missiles would be concealed and camouflaged by palm trees. As early as August 1962, the US suspected the Soviets of building missile facilities in Cuba. During that month, its intelligence services gathered information about sightings by ground observers of Soviet-built MiG-21 fighters and Il-28 light bombers. U-2 spy planes found S-75 Dvina (NATO designation SA-2) surface-to-air missile sites at eight different locations. CIA director John A. McCone was suspicious. Sending antiaircraft missiles into Cuba, he reasoned, "made sense only if Moscow intended to use them to shield a base for ballistic missiles aimed at the United States". On 10 August, he wrote a memo to Kennedy in which he guessed that the Soviets were preparing to introduce ballistic missiles into Cuba. Che Guevara himself traveled to the Soviet Union on 30 August 1962, to sign off on the final agreement regarding the deployment of missiles in Cuba. The visit was heavily monitored by the CIA as Guevara had gained more scruitiny by American intelligence. While in the Soviet Union Guevara argued with Khrushchev that the missile deal should be made public but Khrushchev insisted on total secrecy, and swore the Soviet Union's support if the Americans discovered the missiles. By the time Guevara arrived in Cuba the United States had already discovered the Soviet troops in Cuba via U-2 spy planes. With important Congressional elections scheduled for November, the crisis became enmeshed in American politics. On 31 August, Senator Kenneth Keating (R-New York) warned on the Senate floor that the Soviet Union was "in all probability" constructing a missile base in Cuba. He charged the Kennedy administration with covering up a major threat to the US, thereby starting the crisis. He may have received this initial "remarkably accurate" information from his friend, former congresswoman and ambassador Clare Boothe Luce, who in turn received it from Cuban exiles. A later confirming source for Keating's information possibly was the West German ambassador to Cuba, who had received information from dissidents inside Cuba that Soviet troops had arrived in Cuba in early August and were seen working "in all probability on or near a missile base" and who passed this information to Keating on a trip to Washington in early October. Air Force General Curtis LeMay presented a pre-invasion bombing plan to Kennedy in September, and spy flights and minor military harassment from US forces at Guantanamo Bay Naval Base were the subject of continual Cuban diplomatic complaints to the US government. The first consignment of Soviet R-12 missiles arrived on the night of 8 September, followed by a second on 16 September. The R-12 was a medium-range ballistic missile, capable of carrying a thermonuclear warhead. It was a single-stage, road-transportable, surface-launched, storable liquid propellant fuelled missile that could deliver a megaton-class nuclear weapon. The Soviets were building nine sites—six for R-12 medium-range missiles (NATO designation SS-4 Sandal) with an effective range of 2,000 kilometres (1,200 mi) and three for R-14 intermediate-range ballistic missiles (NATO designation SS-5 Skean) with a maximum range of 4,500 kilometres (2,800 mi). On 7 October, Cuban President Osvaldo Dorticós Torrado spoke at the UN General Assembly: "If... we are attacked, we will defend ourselves. I repeat, we have sufficient means with which to defend ourselves; we have indeed our inevitable weapons, the weapons, which we would have preferred not to acquire, and which we do not wish to employ." On 11 October in another Senate speech, Sen Keating reaffirmed his earlier warning of 31 August and stated that, "Construction has begun on at least a half dozen launching sites for intermediate range tactical missiles." The Cuban leadership was further upset when on 20 September, the US Senate approved Joint Resolution 230, which expressed the US was determined "to prevent in Cuba the creation or use of an externally-supported military capability endangering the security of the United States". On the same day, the US announced a major military exercise in the Caribbean, PHIBRIGLEX-62, which Cuba denounced as a deliberate provocation and proof that the US planned to invade Cuba. The Soviet leadership believed, based on its perception of Kennedy's lack of confidence during the Bay of Pigs Invasion, that he would avoid confrontation and accept the missiles as a fait accompli. On 11 September, the Soviet Union publicly warned that a US attack on Cuba or on Soviet ships that were carrying supplies to the island would mean war. The Soviets continued the Maskirovka program to conceal their actions in Cuba. They repeatedly denied that the weapons being brought into Cuba were offensive in nature. On 7 September, Soviet Ambassador to the United States Anatoly Dobrynin assured United States Ambassador to the United Nations Adlai Stevenson that the Soviet Union was supplying only defensive weapons to Cuba. On 11 September, the Telegraph Agency of the Soviet Union (TASS: Telegrafnoe Agentstvo Sovetskogo Soyuza) announced that the Soviet Union had no need or intention to introduce offensive nuclear missiles into Cuba. On 13 October, Dobrynin was questioned by former Undersecretary of State Chester Bowles about whether the Soviets planned to put offensive weapons in Cuba. He denied any such plans. On 17 October, Soviet embassy official Georgy Bolshakov brought President Kennedy a personal message from Khrushchev reassuring him that "under no circumstances would surface-to-surface missiles be sent to Cuba." The missiles in Cuba allowed the Soviets to effectively target most of the Continental US. The planned arsenal was forty launchers. The Cuban populace readily noticed the arrival and deployment of the missiles and hundreds of reports reached Miami. US intelligence received countless reports, many of dubious quality or even laughable, most of which could be dismissed as describing defensive missiles. Only five reports bothered the analysts. They described large trucks passing through towns at night that were carrying very long canvas-covered cylindrical objects that could not make turns through towns without backing up and maneuvering. Defensive missile transporters, it was believed, could make such turns without undue difficulty. The reports could not be satisfactorily dismissed. The United States had been sending U-2 surveillance over Cuba since the failed Bay of Pigs Invasion. The first issue that led to a pause in reconnaissance flights took place on 30 August, when a U-2 operated by the US Air Force's Strategic Air Command flew over Sakhalin Island in the Soviet Far East by mistake. The Soviets lodged a protest and the US apologized. Nine days later, a Taiwanese-operated U-2 was lost over western China to an SA-2 surface-to-air missile (SAM). US officials were worried that one of the Cuban or Soviet SAMs in Cuba might shoot down a CIA U-2, initiating another international incident. In a meeting with members of the Committee on Overhead Reconnaissance (COMOR) on 10 September, Secretary of State Dean Rusk and National Security Advisor McGeorge Bundy heavily restricted further U-2 flights over Cuban airspace. The resulting lack of coverage over the island for the next five weeks became known to historians as the "Photo Gap". No significant U-2 coverage was achieved over the interior of the island. US officials attempted to use a Corona photo-reconnaissance satellite to obtain coverage over reported Soviet military deployments, but imagery acquired over western Cuba by a Corona KH-4 mission on October 1 was heavily covered by clouds and haze and failed to provide any usable intelligence. At the end of September, Navy reconnaissance aircraft photographed the Soviet ship Kasimov, with large crates on its deck the size and shape of Il-28 jet bomber fuselages. In September 1962, analysts from the Defense Intelligence Agency (DIA) noticed that Cuban surface-to-air missile sites were arranged in a pattern similar to those used by the Soviet Union to protect its ICBM bases, leading DIA to lobby for the resumption of U-2 flights over the island. Although in the past the flights had been conducted by the CIA, pressure from the Defense Department led to that authority being transferred to the Air Force. Following the loss of a CIA U-2 over the Soviet Union in May 1960, it was thought that if another U-2 were shot down, an Air Force aircraft arguably being used for a legitimate military purpose would be easier to explain than a CIA flight. When the reconnaissance missions were reauthorized on 9 October, poor weather kept the planes from flying. The US first obtained U-2 photographic evidence of the missiles on 14 October, when a U-2 flight piloted by Major Richard Heyser took 928 pictures on a path selected by DIA analysts, capturing images of what turned out to be an SS-4 construction site at San Cristóbal, Pinar del Río Province (now in Artemisa Province), in western Cuba. On 15 October, the CIA's National Photographic Interpretation Center (NPIC) reviewed the U-2 photographs and identified objects that they interpreted as medium range ballistic missiles. This identification was made, in part, on the strength of reporting provided by Oleg Penkovsky, a double agent in the GRU working for the CIA and MI6. Although he provided no direct reports of the Soviet missile deployments to Cuba, technical and doctrinal details of Soviet missile regiments that had been provided by Penkovsky in the months and years prior to the Crisis helped NPIC analysts correctly identify the missiles on U-2 imagery. That evening, the CIA notified the Department of State and at 8:30 pm EDT, Bundy chose to wait until the next morning to tell the President. McNamara was briefed at midnight. The next morning, Bundy met with Kennedy and showed him the U-2 photographs and briefed him on the CIA's analysis of the images. At 6:30 pm EDT, Kennedy convened a meeting of the nine members of the National Security Council and five other key advisers, in a group he formally named the Executive Committee of the National Security Council (EXCOMM) after the fact on 22 October by National Security Action Memorandum 196. Without informing the members of EXCOMM, President Kennedy tape-recorded all of their proceedings, and Sheldon M. Stern, head of the Kennedy library transcribed some of them. On 16 October, President Kennedy notified Attorney General Robert Kennedy that he was convinced the Soviets were placing missiles in Cuba and it was a legitimate threat. This made the threat of nuclear destruction by two world superpowers a reality. Robert Kennedy responded by contacting the Soviet Ambassador, Anatoly Dobrynin. Robert Kennedy expressed his "concern about what was happening" and Dobrynin "was instructed by Soviet Chairman Nikita S. Khrushchev to assure President Kennedy that there would be no ground-to-ground missiles or offensive weapons placed in Cuba". Khrushchev further assured Kennedy that the Soviet Union had no intention of "disrupting the relationship of our two countries" despite the photo evidence presented before President Kennedy. The US had no plan in place because until recently its intelligence had been convinced that the Soviets would never install nuclear missiles in Cuba. EXCOMM discussed several possible courses of action: The Joint Chiefs of Staff unanimously agreed that a full-scale attack and invasion was the only solution. They believed that the Soviets would not attempt to stop the US from conquering Cuba. Kennedy was skeptical: They, no more than we, can let these things go by without doing something. They can't, after all their statements, permit us to take out their missiles, kill a lot of Russians, and then do nothing. If they don't take action in Cuba, they certainly will in Berlin. Kennedy concluded that attacking Cuba by air would signal the Soviets to presume "a clear line" to conquer Berlin. Kennedy also believed that US allies would think of the country as "trigger-happy cowboys" who lost Berlin because they could not peacefully resolve the Cuban situation. The EXCOMM then discussed the effect on the strategic balance of power, both political and military. The Joint Chiefs of Staff believed that the missiles would seriously alter the military balance, but McNamara disagreed. An extra 40, he reasoned, would make little difference to the overall strategic balance. The US already had approximately 5,000 strategic warheads, but the Soviet Union had only 300. McNamara concluded that the Soviets having 340 would not therefore substantially alter the strategic balance. In 1990, he reiterated that "it made no difference.... The military balance wasn't changed. I didn't believe it then, and I don't believe it now." The EXCOMM agreed that the missiles would affect the political balance. Kennedy had explicitly promised the American people less than a month before the crisis that "if Cuba should possess a capacity to carry out offensive actions against the United States... the United States would act." Further, US credibility among its allies and people would be damaged if the Soviet Union appeared to redress the strategic imbalance by placing missiles in Cuba. Kennedy explained after the crisis that "it would have politically changed the balance of power. It would have appeared to, and appearances contribute to reality." On 18 October, Kennedy met with Soviet Minister of Foreign Affairs Andrei Gromyko, who claimed the weapons were for defensive purposes only. Not wanting to expose what he already knew and to avoid panicking the American public, Kennedy did not reveal that he was already aware of the missile buildup. Two Operational Plans (OPLAN) were considered. OPLAN 316 envisioned a full invasion of Cuba by Army and Marine units, supported by the Navy, following Air Force and naval airstrikes. Army units in the US would have had trouble fielding mechanised and logistical assets, and the US Navy could not supply enough amphibious shipping to transport even a modest armoured contingent from the Army. OPLAN 312, primarily an Air Force and Navy carrier operation, was designed with enough flexibility to do anything from engaging individual missile sites to providing air support for OPLAN 316's ground forces. Kennedy met with members of EXCOMM and other top advisers throughout 21 October, considering two remaining options: an air strike primarily against the Cuban missile bases or a naval blockade of Cuba. A full-scale invasion was not the administration's first option. McNamara supported the naval blockade as a strong but limited military action that left the US in control. The term "blockade" was problematic – according to international law, a blockade is an act of war, but the Kennedy administration did not think that the Soviets would be provoked to attack by a mere blockade. Additionally, legal experts at the State Department and Justice Department concluded that a declaration of war could be avoided if another legal justification, based on the Rio Treaty for defence of the Western Hemisphere, was obtained from a resolution by a two-thirds vote from the members of the Organization of American States (OAS). Admiral George Anderson, Chief of Naval Operations wrote a position paper that helped Kennedy to differentiate between what they termed a "quarantine" of offensive weapons and a blockade of all materials, claiming that a classic blockade was not the original intention. Since it would take place in international waters, Kennedy obtained the approval of the OAS for military action under the hemispheric defence provisions of the Rio Treaty: Latin American participation in the quarantine now involved two Argentine destroyers which were to report to the US Commander South Atlantic [COMSOLANT] at Trinidad on November 9. An Argentine submarine and a Marine battalion with lift were available if required. In addition, two Venezuelan destroyers (Destroyers ARV D-11 Nueva Esparta" and "ARV D-21 Zulia") and one submarine (Caribe) had reported to COMSOLANT, ready for sea by November 2. The Government of Trinidad and Tobago offered the use of Chaguaramas Naval Base to warships of any OAS nation for the duration of the "quarantine". The Dominican Republic had made available one escort ship. Colombia was reported ready to furnish units and had sent military officers to the US to discuss this assistance. The Argentine Air Force informally offered three SA-16 aircraft in addition to forces already committed to the "quarantine" operation. This initially was to involve a naval blockade against offensive weapons within the framework of the Organization of American States and the Rio Treaty. Such a blockade might be expanded to cover all types of goods and air transport. The action was to be backed up by surveillance of Cuba. The CNO's scenario was followed closely in later implementing the "quarantine." On 19 October, the EXCOMM formed separate working groups to examine the air strike and blockade options, and by the afternoon most support in the EXCOMM had shifted to a blockade. Reservations about the plan continued to be voiced as late as 21 October, the paramount concern being that once the blockade was put into effect, the Soviets would rush to complete some of the missiles. Consequently, the US could find itself bombing operational missiles if the blockade did not force Khrushchev to remove the missiles already on the island. At 3:00 pm EDT on 22 October, President Kennedy formally established the executive committee (EXCOMM) with National Security Action Memorandum (NSAM) 196. At 5:00 pm, he met with Congressional leaders, who contentiously opposed a blockade and demanded a stronger response. In Moscow, US Ambassador Foy D. Kohler briefed Khrushchev on the pending blockade and Kennedy's speech to the nation. Ambassadors around the world gave notice to non-Eastern Bloc leaders. Before the speech, US delegations met with Canadian Prime Minister John Diefenbaker, British Prime Minister Harold Macmillan, West German Chancellor Konrad Adenauer, French President Charles de Gaulle and Secretary-General of the Organization of American States, José Antonio Mora to brief them on this intelligence and the US's proposed response. All were supportive of the US position. Over the course of the crisis, Kennedy had daily telephone conversations with Macmillan, who was publicly supportive of US actions. Shortly before his speech, Kennedy telephoned former President Dwight Eisenhower. Kennedy's conversation with the former president also revealed that the two had been consulting during the Cuban Missile Crisis. The two also anticipated that Khrushchev would respond to the Western world in a manner similar to his response during the Suez Crisis, and would possibly wind up trading off Berlin. At 7:00 pm EDT on 22 October, Kennedy delivered a nationwide televised address on all of the major networks announcing the discovery of the missiles. He noted: It shall be the policy of this nation to regard any nuclear missile launched from Cuba against any nation in the Western Hemisphere as an attack by the Soviet Union on the United States, requiring a full retaliatory response upon the Soviet Union. Kennedy described the administration's plan: To halt this offensive buildup, a strict quarantine on all offensive military equipment under shipment to Cuba is being initiated. All ships of any kind bound for Cuba, from whatever nation or port, will, if found to contain cargoes of offensive weapons, be turned back. This quarantine will be extended, if needed, to other types of cargo and carriers. We are not at this time, however, denying the necessities of life as the Soviets attempted to do in their Berlin blockade of 1948. During the speech, a directive went out to all US forces worldwide, placing them on DEFCON 3. The heavy cruiser USS Newport News was the designated flagship for the blockade, with USS Leary as Newport News's destroyer escort. Kennedy's speech writer Ted Sorensen stated in 2007 that the address to the nation was "Kennedy's most important speech historically, in terms of its impact on our planet." On 24 October, at 11:24 am EDT, a cable, drafted by United States Under Secretary of State George Ball to the US Ambassador in Turkey and NATO, notified them that they were considering making an offer to withdraw the missiles from Italy and Turkey, in exchange for the Soviet withdrawal from Cuba. Turkish officials replied that they would "deeply resent" any trade involving the US missile presence in their country. One day later, on the morning of 25 October, American journalist Walter Lippmann proposed the same thing in his syndicated column. Castro reaffirmed Cuba's right to self-defense and said that all of its weapons were defensive and Cuba would not allow an inspection. Three days after Kennedy's speech, the Chinese People's Daily announced that "650,000,000 Chinese men and women were standing by the Cuban people." In West Germany, newspapers supported the US response by contrasting it with the weak American actions in the region during the preceding months. They also expressed some fear that the Soviets might retaliate in Berlin. In France on 23 October, the crisis made the front page of all the daily newspapers. The next day, an editorial in Le Monde expressed doubt about the authenticity of the CIA's photographic evidence. Two days later, after a visit by a high-ranking CIA agent, the newspaper accepted the validity of the photographs. In the 29 October issue of Le Figaro, Raymond Aron wrote in support of the American response. On 24 October, Pope John XXIII sent a message to the Soviet embassy in Rome, to be transmitted to the Kremlin, in which he voiced his concern for peace. In this message he stated, "We beg all governments not to remain deaf to this cry of humanity. That they do all that is in their power to save peace." The crisis continued unabated, and on the evening of 24 October, the Soviet TASS news agency broadcast a telegram from Khrushchev to Kennedy, in which Khrushchev warned that the United States' "outright piracy" would lead to war. Khrushchev then sent at 9:24 pm a telegram to Kennedy, which was received at 10:52 pm EDT. Khrushchev stated, "if you weigh the present situation with a cool head without giving way to passion, you will understand that the Soviet Union cannot afford not to decline the despotic demands of the USA" and that the Soviet Union viewed the blockade as "an act of aggression", and their ships would be instructed to ignore it. After 23 October, Soviet communications with the USA increasingly showed indications of having been rushed. Undoubtedly a product of pressure, it was not uncommon for Khrushchev to repeat himself and to send messages lacking basic editing. With President Kennedy making his aggressive intentions of a possible airstrike followed by an invasion on Cuba known, Khrushchev rapidly sought a diplomatic compromise. Communications between the two superpowers had entered into a unique and revolutionary period; with the newly developed threat of mutual destruction through the deployment of nuclear weapons, diplomacy now demonstrated how power and coercion could dominate negotiations. The US requested an emergency meeting of the United Nations Security Council on 25 October. US Ambassador to the United Nations Adlai Stevenson confronted Soviet Ambassador Valerian Zorin in an emergency meeting of the Security Council, challenging him to admit the existence of the missiles. Ambassador Zorin refused to answer. At 10:00 pm EDT the next day, the US raised the readiness level of Strategic Air Command (SAC) forces to DEFCON 2. For the only confirmed time in US history, B-52 bombers went on continuous airborne alert, and B-47 medium bombers were dispersed to various military and civilian airfields and made ready to take off, fully equipped, on 15 minutes' notice. One-eighth of SAC's 1,436 bombers were on airborne alert, and some 145 intercontinental ballistic missiles stood on ready alert, some of which targeted Cuba. Air Defense Command (ADC) redeployed 161 nuclear-armed interceptors to 16 dispersal fields within nine hours, with one third maintaining 15-minute alert status. Twenty-three nuclear-armed B-52s were sent to orbit points within striking distance of the Soviet Union so it would believe that the US was serious. Jack J. Catton later estimated that about 80 per cent of SAC's planes were ready for launch during the crisis; David A. Burchinal recalled that, by contrast: the Russians were so thoroughly stood down, and we knew it. They didn't make any move. They did not increase their alert; they did not increase any flights, or their air defense posture. They didn't do a thing, they froze in place. We were never further from nuclear war than at the time of Cuba, never further. By 22 October, Tactical Air Command (TAC) had 511 fighters, plus supporting tankers and reconnaissance aircraft, deployed to face Cuba on one-hour alert status. TAC and the Military Air Transport Service had problems. The concentration of aircraft in Florida strained command and support echelons, which faced critical undermanning in security, armaments, and communications; the absence of initial authorization for war-reserve stocks of conventional munitions forced TAC to scrounge; and the lack of airlift assets to support a major airborne drop necessitated the call-up of 24 reserve squadrons. On 25 October at 1:45 am EDT, Kennedy responded to Khrushchev's telegram by stating that the US was forced into action after receiving repeated assurances that no offensive missiles were being placed in Cuba, and when the assurances proved to be false, the deployment "required the responses I have announced.... I hope that your government will take necessary action to permit a restoration of the earlier situation." At 7:15 am EDT on 25 October, USS Essex and USS Gearing attempted to intercept Bucharest but failed to do so. Fairly certain that the tanker did not contain any military material, the US allowed it through the blockade. Later that day, at 5:43 pm, the commander of the blockade effort ordered the destroyer USS Joseph P. Kennedy Jr. to intercept and board the Lebanese freighter Marucla. That took place the next day, and Marucla was cleared through the blockade after its cargo was checked. At 5:00 pm EDT on 25 October, William Clements announced that the missiles in Cuba were still actively being worked on. That report was later verified by a CIA report that suggested there had been no slowdown at all. In response, Kennedy issued Security Action Memorandum 199, authorizing the loading of nuclear weapons onto aircraft under the command of SACEUR, which had the duty of carrying out first air strikes on the Soviet Union. Kennedy claimed that the blockade had succeeded when the USSR turned back fourteen ships presumably carrying offensive weapons. The first indication of this came from a report from the British GCHQ sent to the White House Situation Room containing intercepted communications from Soviet ships reporting their positions. On 24 October, Kislovodsk, a Soviet cargo ship, reported a position north-east of where it had been 24 hours earlier indicating it had "discontinued" its voyage and turned back towards the Baltic. The next day, reports showed more ships originally bound for Cuba had altered their course. The next morning, 26 October, Kennedy informed the EXCOMM that he believed only an invasion would remove the missiles from Cuba. He was persuaded to give the matter time and continue with both military and diplomatic pressure. He agreed and ordered the low-level flights over the island to be increased from two per day to once every two hours. He also ordered a crash program to institute a new civil government in Cuba if an invasion went ahead. At this point, the crisis was ostensibly at a stalemate. The Soviets had shown no indication that they would back down and had made public media and private inter-governmental statements to that effect. The US had no reason to believe otherwise and was in the early stages of preparing for an invasion, along with a nuclear strike on the Soviet Union if it responded militarily, which the US assumed it would. Kennedy had no intention of keeping these plans a secret; with an array of Cuban and Soviet spies forever present, Khrushchev was quickly made aware of this looming danger. The implicit threat of air strikes on Cuba followed by invasion allowed the United States to exert pressure in future talks. It was the possibility of military action that played an influential role in accelerating Khrushchev's proposal for a compromise. Throughout the closing stages of October, Soviet communications to the United States indicated increasing defensiveness. Khrushchev's increasing tendency to use poorly phrased and ambiguous communications throughout the compromise negotiations conversely increased United States confidence and clarity in messaging. Leading Soviet figures consistently failed to mention that only the Cuban government could agree to inspections of the territory and continually made arrangements relating to Cuba without the knowledge of Fidel Castro himself. According to Dean Rusk, Khrushchev "blinked"; he began to panic from the consequences of his own plan, and this was reflected in the tone of Soviet messages. This allowed the US to largely dominate negotiations in late October. At 1:00 pm EDT on 26 October, John A. Scali of ABC News had lunch with Aleksandr Fomin, the cover name of Alexander Feklisov, the KGB station chief in Washington, at Fomin's request. Following the instructions of the Politburo of the CPSU, Fomin noted, "War seems about to break out." He asked Scali to use his contacts to talk to his "high-level friends" at the State Department to see if the US would be interested in a diplomatic solution. He suggested that the language of the deal would contain an assurance from the Soviet Union to remove the weapons under UN supervision and that Castro would publicly announce that he would not accept such weapons again in exchange for a public statement by the US that it would not invade Cuba. The US responded by asking the Brazilian government to pass a message to Castro that the US would be "unlikely to invade" if the missiles were removed. Mr. President, we and you ought not now to pull on the ends of the rope in which you have tied the knot of war, because the more the two of us pull, the tighter that knot will be tied. And a moment may come when that knot will be tied so tight that even he who tied it will not have the strength to untie it, and then it will be necessary to cut that knot, and what that would mean is not for me to explain to you, because you yourself understand perfectly of what terrible forces our countries dispose. Consequently, if there is no intention to tighten that knot and thereby to doom the world to the catastrophe of thermonuclear war, then let us not only relax the forces pulling on the ends of the rope, let us take measures to untie that knot. We are ready for this. — Letter From Chairman Khrushchev to President Kennedy, 26 October 1962 At 6:00 pm EDT on 26 October, the State Department started receiving a message that appeared to be written personally by Khrushchev. It was Saturday 2:00 am in Moscow. The long letter took several minutes to arrive, and it took translators additional time to translate and transcribe it. Robert F. Kennedy described the letter as "very long and emotional". Khrushchev reiterated the basic outline that had been stated to Scali earlier in the day: "I propose: we, for our part, will declare that our ships bound for Cuba are not carrying any armaments. You will declare that the United States will not invade Cuba with its troops and will not support any other forces which might intend to invade Cuba. Then the necessity of the presence of our military specialists in Cuba will disappear." At 6:45 pm EDT, news of Fomin's offer to Scali was finally heard and was interpreted as a "set up" for the arrival of Khrushchev's letter. The letter was then considered official and accurate, although it was later learned that Fomin was almost certainly operating of his own accord without official backing. Additional study of the letter was ordered and continued into the night. Direct aggression against Cuba would mean nuclear war. The Americans speak about such aggression as if they did not know or did not want to accept this fact. I have no doubt they would lose such a war. Castro, on the other hand, was convinced that an invasion of Cuba was soon at hand, and on 26 October, he sent a telegram to Khrushchev that appeared to call for a pre-emptive nuclear strike on the US in case of attack. In a 2010 interview, Castro expressed regret about his 1962 stance on first use: "After I've seen what I've seen, and knowing what I know now, it wasn't worth it at all." Castro also ordered all anti-aircraft weapons in Cuba to fire on any US aircraft; previous orders had been to fire only on groups of two or more. At 6:00 am EDT on 27 October, the CIA delivered a memo reporting that three of the four missile sites at San Cristobal and both sites at Sagua la Grande appeared to be fully operational. It also noted that the Cuban military continued to organise for action but was under order not to initiate action unless attacked. At 9:00 am EDT on 27 October, Radio Moscow began broadcasting a message from Khrushchev. Contrary to the letter of the night before, the message offered a new trade: the missiles on Cuba would be removed in exchange for the removal of the Jupiter missiles from Italy and Turkey. At 10:00 am EDT, the executive committee met again to discuss the situation and came to the conclusion that the change in the message was because of internal debate between Khrushchev and other party officials in the Kremlin. Kennedy realised that he would be in an "insupportable position if this becomes Khrushchev's proposal" because the missiles in Turkey were not militarily useful and were being removed anyway and "It's gonna – to any man at the United Nations or any other rational man, it will look like a very fair trade." Bundy explained why Khrushchev's public acquiescence could not be considered: "The current threat to peace is not in Turkey, it is in Cuba." McNamara noted that another tanker, the Grozny, was about 600 miles (970 km) out and should be intercepted. He also noted that they had not made the Soviets aware of the blockade line and suggested relaying that information to them via U Thant at the United Nations. While the meeting progressed, at 11:03 am EDT a new message began to arrive from Khrushchev. The message stated, in part: "You are disturbed over Cuba. You say that this disturbs you because it is ninety-nine miles by sea from the coast of the United States of America. But... you have placed destructive missile weapons, which you call offensive, in Italy and Turkey, literally next to us.... I therefore make this proposal: We are willing to remove from Cuba the means which you regard as offensive.... Your representatives will make a declaration to the effect that the United States... will remove its analogous means from Turkey... and after that, persons entrusted by the United Nations Security Council could inspect on the spot the fulfillment of the pledges made." The executive committee continued to meet through the day. Throughout the crisis, Turkey had repeatedly stated that it would be upset if the Jupiter missiles were removed. Italy's Prime Minister Amintore Fanfani, who was also Foreign Minister ad interim, offered to allow withdrawal of the missiles deployed in Apulia as a bargaining chip. He gave the message to one of his most trusted friends, Ettore Bernabei, general manager of RAI-TV, to convey to Arthur M. Schlesinger Jr. Bernabei was in New York to attend an international conference on satellite TV broadcasting. On the morning of 27 October, a U-2F (the third CIA U-2A, modified for air-to-air refuelling) piloted by USAF Major Rudolf Anderson, departed its forward operating location at McCoy AFB, Florida. At approximately 12:00 pm EDT, the aircraft was struck by an SA-2 surface-to-air missile launched from Cuba. The aircraft crashed, and Anderson was killed. Stress in negotiations between the Soviets and the US intensified; only later was it assumed that the decision to fire the missile was made locally by an undetermined Soviet commander, acting on his own authority. Later that day, at about 3:41 pm EDT, several US Navy RF-8A Crusader aircraft, on low-level photo-reconnaissance missions, were fired upon. On 28 October 1962, Khrushchev told his son Sergei that the shooting down of Anderson's U-2 was by the "Cuban military at the direction of Raul Castro". At 4:00 pm EDT, Kennedy recalled members of EXCOMM to the White House and ordered that a message should immediately be sent to U Thant asking the Soviets to suspend work on the missiles while negotiations were carried out. During the meeting, General Maxwell Taylor delivered the news that the U-2 had been shot down. Kennedy had earlier claimed he would order an attack on such sites if fired upon, but he decided to not act unless another attack was made. Forty years later, McNamara said: We had to send a U-2 over to gain reconnaissance information on whether the Soviet missiles were becoming operational. We believed that if the U-2 was shot down that—the Cubans didn't have capabilities to shoot it down, the Soviets did—we believed if it was shot down, it would be shot down by a Soviet surface-to-air-missile unit, and that it would represent a decision by the Soviets to escalate the conflict. And therefore, before we sent the U-2 out, we agreed that if it was shot down we wouldn't meet, we'd simply attack. It was shot down on Friday.... Fortunately, we changed our mind, we thought "Well, it might have been an accident, we won't attack." Later we learned that Khrushchev had reasoned just as we did: we send over the U-2, if it was shot down, he reasoned we would believe it was an intentional escalation. And therefore, he issued orders to Pliyev, the Soviet commander in Cuba, to instruct all of his batteries not to shoot down the U-2. Daniel Ellsberg said that Robert Kennedy (RFK) told him in 1964 that after the U-2 was shot down and the pilot killed, he (RFK) told Soviet ambassador Dobrynin, "You have drawn first blood ... . [T]he president had decided against advice ... not to respond militarily to that attack, but he [Dobrynin] should know that if another plane was shot at, ... we would take out all the SAMs and antiaircraft ... . And that would almost surely be followed by an invasion." Emissaries sent by both Kennedy and Khrushchev agreed to meet at the Yenching Palace Chinese restaurant in the Cleveland Park neighbourhood of Washington, DC, on Saturday evening, 27 October. Kennedy suggested to take Khrushchev's offer to trade away the missiles. Unknown to most members of the EXCOMM, but with the support of his brother the president, Robert Kennedy had been meeting with the Soviet Ambassador Dobrynin in Washington to discover whether the intentions were genuine. The EXCOMM was generally against the proposal because it would undermine NATO's authority, and the Turkish government had repeatedly stated it was against any such trade. As the meeting progressed, a new plan emerged, and Kennedy was slowly persuaded. The new plan called for him to ignore the latest message and instead to return to Khrushchev's earlier one. Kennedy was initially hesitant, feeling that Khrushchev would no longer accept the deal because a new one had been offered, but Llewellyn Thompson argued that it was still possible. White House Special Counsel and Adviser Ted Sorensen and Robert Kennedy left the meeting and returned 45 minutes later, with a draft letter to that effect. The President made several changes, had it typed, and sent it. After the EXCOMM meeting, a smaller meeting continued in the Oval Office. The group argued that the letter should be underscored with an oral message to Dobrynin that stated that if the missiles were not withdrawn, military action would be used to remove them. Rusk added one proviso that no part of the language of the deal would mention Turkey, but there would be an understanding that the missiles would be removed "voluntarily" in the immediate aftermath. The president agreed, and the message was sent. At Rusk's request, Fomin and Scali met again. Scali asked why the two letters from Khrushchev were so different, and Fomin claimed it was because of "poor communications". Scali replied that the claim was not credible and shouted that he thought it was a "stinking double cross". He went on to claim that an invasion was only hours away, and Fomin stated that a response to the US message was expected from Khrushchev shortly and urged Scali to tell the State Department that no treachery was intended. Scali said that he did not think anyone would believe him, but he agreed to deliver the message. The two went their separate ways, and Scali immediately typed out a memo for the EXCOMM. Within the US establishment, it was well understood that ignoring the second offer and returning to the first put Khrushchev in a terrible position. Military preparations continued, and all active duty Air Force personnel were recalled to their bases for possible action. Robert Kennedy later recalled the mood: "We had not abandoned all hope, but what hope there was now rested with Khrushchev's revising his course within the next few hours. It was a hope, not an expectation. The expectation was military confrontation by Tuesday [30 October], and possibly tomorrow [29 October] ...." At 8:05 pm EDT, the letter drafted earlier in the day was delivered. The message read, "As I read your letter, the key elements of your proposals—which seem generally acceptable as I understand them—are as follows: 1) You would agree to remove these weapons systems from Cuba under appropriate United Nations observation and supervision; and undertake, with suitable safe-guards, to halt the further introduction of such weapon systems into Cuba. 2) We, on our part, would agree—upon the establishment of adequate arrangements through the United Nations, to ensure the carrying out and continuation of these commitments (a) to remove promptly the quarantine measures now in effect and (b) to give assurances against the invasion of Cuba." The letter was also released directly to the press to ensure it could not be "delayed". With the letter delivered, a deal was on the table. As Robert Kennedy noted, there was little expectation it would be accepted. At 9:00 pm EDT, the EXCOMM met again to review the actions for the following day. Plans were drawn up for air strikes on the missile sites as well as other economic targets, notably petroleum storage. McNamara stated that they had to "have two things ready: a government for Cuba, because we're going to need one; and secondly, plans for how to respond to the Soviet Union in Europe, because sure as hell they're going to do something there". At 12:12 am EDT, on 27 October, the US informed its NATO allies that "the situation is growing shorter.... the United States may find it necessary within a very short time in its interest and that of its fellow nations in the Western Hemisphere to take whatever military action may be necessary." To add to the concern, at 6:00 am, the CIA reported that all missiles in Cuba were ready for action. On 27 October, Khrushchev also received a letter from Castro, what is now known as the Armageddon Letter (dated the day before), which was interpreted as urging the use of nuclear force in the event of an attack on Cuba: "I believe the imperialists' aggressiveness is extremely dangerous and if they actually carry out the brutal act of invading Cuba in violation of international law and morality, that would be the moment to eliminate such danger forever through an act of clear legitimate defense, however harsh and terrible the solution would be," Castro wrote. Later that same day, what the White House later called "Black Saturday", the US Navy dropped a series of "signalling" depth charges (practice depth charges the size of hand grenades) on a Soviet submarine (B-59) at the blockade line, unaware that it was armed with a nuclear-tipped torpedo with orders that allowed it to be used if the submarine was damaged by depth charges or surface fire. As the submarine was too deep to monitor any radio traffic, the captain of the B-59, Valentin Grigoryevich Savitsky, decided that a war might already have started and wanted to launch a nuclear torpedo. The decision to launch these normally only required agreement from the two commanding officers on board, the Captain and the Political Officer. However, the commander of the submarine Flotilla, Vasily Arkhipov, was aboard B-59 and so he also had to agree. Arkhipov objected and so the nuclear launch was narrowly averted. On the same day a U-2 spy plane made an accidental, unauthorised ninety-minute overflight of the Soviet Union's far eastern coast. The Soviets responded by scrambling MiG fighters from Wrangel Island; in turn, the Americans launched F-102 fighters armed with nuclear air-to-air missiles over the Bering Sea. On Saturday, 27 October, after much deliberation between the Soviet Union and Kennedy's cabinet, Kennedy secretly agreed to remove all missiles set in Turkey and possibly southern Italy, the former on the border of the Soviet Union, in exchange for Khrushchev removing all missiles in Cuba. There is some dispute as to whether removing the missiles from Italy was part of the secret agreement. Khrushchev wrote in his memoirs that it was, and when the crisis had ended McNamara gave the order to dismantle the missiles in both Italy and Turkey. At this point, Khrushchev knew things the US did not. First, that the shooting down of the U-2 by a Soviet missile violated direct orders from Moscow, and Cuban anti-aircraft fire against other US reconnaissance aircraft also violated direct orders from Khrushchev to Castro. Second, the Soviets already had 162 nuclear warheads on Cuba that the US did not then believe were there. Third, the Soviets and Cubans on the island would almost certainly have responded to an invasion by using those nuclear weapons, even though Castro believed that every human in Cuba would likely die as a result. Khrushchev also knew but may not have considered the fact that he had submarines armed with nuclear weapons that the US Navy may not have known about. Khrushchev knew he was losing control. President Kennedy had been told in early 1961 that a nuclear war would likely kill a third of humanity, with most or all of those deaths concentrated in the US, the USSR, Europe and China; Khrushchev may well have received similar reports from his military. With this background, when Khrushchev heard Kennedy's threats relayed by Robert Kennedy to Soviet Ambassador Dobrynin, he immediately drafted his acceptance of Kennedy's latest terms from his dacha without involving the Politburo, as he had previously, and had them immediately broadcast over Radio Moscow, which he believed the US would hear. In that broadcast at 9:00 am EST, on 28 October, Khrushchev stated that "the Soviet government, in addition to previously issued instructions on the cessation of further work at the building sites for the weapons, has issued a new order on the dismantling of the weapons which you describe as 'offensive' and their crating and return to the Soviet Union." At 10:00 am on 28 October, Kennedy first learned of Khrushchev's solution to the crisis with the US removing the 15 Jupiters in Turkey and the Soviets would remove the rockets from Cuba. Khrushchev had made the offer in a public statement for the world to hear. Despite almost solid opposition from his senior advisers, Kennedy quickly embraced the Soviet offer. "This is a pretty good play of his," Kennedy said, according to a tape recording that he made secretly of the Cabinet Room meeting. Kennedy had deployed the Jupiters in March 1962, causing a stream of angry outbursts from Khrushchev. "Most people will think this is a rather even trade and we ought to take advantage of it," Kennedy said. Vice President Lyndon Johnson was the first to endorse the missile swap but others continued to oppose the offer. Finally, Kennedy ended the debate. "We can't very well invade Cuba with all its toil and blood," Kennedy said, "when we could have gotten them out by making a deal on the same missiles on Turkey. If that's part of the record, then you don't have a very good war." Kennedy immediately responded to Khrushchev's letter, issuing a statement calling it "an important and constructive contribution to peace". He continued this with a formal letter: I consider my letter to you of October twenty-seventh and your reply of today as firm undertakings on the part of both our governments which should be promptly carried out.... The US will make a statement in the framework of the Security Council in reference to Cuba as follows: it will declare that the United States of America will respect the inviolability of Cuban borders, its sovereignty, that it take the pledge not to interfere in internal affairs, not to intrude themselves and not to permit our territory to be used as a bridgehead for the invasion of Cuba, and will restrain those who would plan to carry an aggression against Cuba, either from US territory or from the territory of other countries neighboring to Cuba. Kennedy's planned statement would also contain suggestions he had received from his adviser Schlesinger Jr. in a "Memorandum for the President" describing the "Post Mortem on Cuba". On 28 October, Kennedy participated in telephone conversations with Eisenhower and fellow former US President Harry Truman. In these calls, Kennedy revealed that he thought the crisis would result in the two superpowers being "toe to toe" in Berlin by the end of the following month and expressed concern that the Soviet setback in Cuba would "make things tougher" there. He also informed his predecessors that he had rejected the public Soviet offer to withdraw from Cuba in exchange for the withdrawal of US missiles from Turkey. The US continued the blockade; in the following days, aerial reconnaissance proved that the Soviets were making progress in removing the missile systems. The 42 missiles and their support equipment were loaded onto eight Soviet ships. On 2 November 1962, Kennedy addressed the US via radio and television broadcasts regarding the dismantlement process of the Soviet R-12 missile bases located in the Caribbean region. The ships left Cuba on November 5 to 9. The US made a final visual check as each of the ships passed the blockade line. Further diplomatic efforts were required to remove the Soviet Il-28 bombers, and they were loaded on three Soviet ships on 5 and 6 December. Concurrent with the Soviet commitment on the Il-28s, the US government announced the end of the blockade from 6:45 pm EST on 20 November 1962. At the time when the Kennedy administration thought that the Cuban Missile Crisis was resolved, nuclear tactical rockets stayed in Cuba since they were not part of the Kennedy-Khrushchev understandings and the Americans did not know about them. The Soviets changed their minds, fearing possible future Cuban militant steps, and on 22 November 1962, Deputy Premier of the Soviet Union Anastas Mikoyan told Castro that the rockets with the nuclear warheads were being removed as well. The Cuban Missile Crises was solved in part by a secret agreement by John F. Kennedy and Nikita Khrushchev. The Kennedy-Khrushchev Pact was known only by 9 U.S. officials at the time of its creation in October 1963 and was the first time officially acknowledged at a conference in Moscow in January 1989 by Soviet Ambassador Dobrynin and Kennedy's speechwriter Theodore Sorensen. In his negotiations with the Soviet Ambassador Anatoly Dobrynin, Robert Kennedy informally proposed that the Jupiter missiles in Turkey would be removed "within a short time after this crisis was over". Under an operation code-named Operation Pot Pie, the removal of the Jupiters from Italy and Turkey began on 1 April, and was completed by 24 April 1963. The initial plans were to recycle the missiles for use in other programs, but NASA and the USAF were not interested in retaining the missile hardware. The missile bodies were destroyed on site, warheads, guidance packages, and launching equipment worth $14 million were returned to the United States. The dismantling operations were named Pot Pie I for Italy and Pot Pie II for Turkey by the United States Air Forces. The practical effect of the Kennedy-Khrushchev Pact was that the US would remove their rockets from Italy and Turkey and that the Soviets had no intention of resorting to nuclear war if they were out-gunned by the US. Because the withdrawal of the Jupiter missiles from NATO bases in Italy and Turkey was not made public at the time, Khrushchev appeared to have lost the conflict and become weakened. The perception was that Kennedy had won the contest between the superpowers and that Khrushchev had been humiliated. Both Kennedy and Khrushchev took every step to avoid full conflict despite pressures from their respective governments. Khrushchev held power for another two years. As a direct result to the crisis, the United States and the Soviet Union set up a direct line of communication. The hot line between the Soviet Union and the United States was a way for the President and Premier to have negotiations should a crisis like this ever happen again. By the time of the crisis in October 1962, the total number of nuclear weapons in the stockpiles of each country numbered approximately 26,400 for the United States and 3,300 for the Soviet Union. For the US, around 3,500 (with a combined yield of approximately 6,300 megatons) would have been used in attacking the Soviet Union. The Soviets had considerably less strategic firepower at their disposal: some 300–320 bombs and warheads, without submarine-based weapons in a position to threaten the US mainland and most of their intercontinental delivery systems based on bombers that would have difficulty penetrating North American air defence systems. However, they had already moved 158 warheads to Cuba; between 95 and 100 would have been ready for use if the US had invaded Cuba, most of which were short-ranged. The US had approximately 4,375 nuclear weapons deployed in Europe, most of which were tactical weapons such as nuclear artillery, with around 450 of them for ballistic missiles, cruise missiles, and aircraft; the Soviets had more than 550 similar weapons in Europe. Cuba perceived the outcome as a betrayal by the Soviets, as decisions on how to resolve the crisis had been made exclusively by Kennedy and Khrushchev. Castro was especially upset that certain issues of interest to Cuba, such as the status of the US Naval Base in Guantánamo, were not addressed. That caused Cuban–Soviet relations to deteriorate for years to come. Historian Arthur Schlesinger believed that when the missiles were withdrawn, Castro was more angry with Khrushchev than with Kennedy because Khrushchev had not consulted Castro before deciding to remove them. Although Castro was infuriated by Khrushchev, he planned on striking the US with the remaining missiles if an invasion of the island occurred. A few weeks after the crisis, during an interview with the British communist newspaper the Daily Worker, Guevara was still fuming over the perceived Soviet betrayal and told correspondent Sam Russell that, if the missiles had been under Cuban control, they would have fired them off. While expounding on the incident later, Guevara reiterated that the cause of socialist liberation against global "imperialist aggression" would ultimately have been worth the possibility of "millions of atomic war victims". The missile crisis further convinced Guevara that the world's two superpowers (the United States and the Soviet Union) used Cuba as a pawn in their own global strategies. Afterward, he denounced the Soviets almost as frequently as he denounced the Americans. During the crisis, Gheorghe Gheorghiu-Dej, general secretary of Romania's communist party, sent a letter to President Kennedy dissociating Romania from Soviet actions. This convinced the American administration of Bucharest's intentions of detaching itself from Moscow. The significance of how close the world came to thermonuclear war impelled Khrushchev to propose a far-reaching easing of tensions with the US. In a letter to President Kennedy dated 30 October 1962, Khrushchev outlined a range of bold initiatives to forestall the possibility of a further nuclear crisis, including proposing a non-aggression treaty between the North Atlantic Treaty Organization (NATO) and the Warsaw Pact or even disbanding these military blocs, a treaty to cease all nuclear weapons testing and even the elimination of all nuclear weapons, resolution of the hot-button issue of Germany by both East and West formally accepting the existence of West Germany and East Germany, and US recognition of the government of mainland China. The letter invited counter-proposals and further exploration of these and other issues through peaceful negotiations. Khrushchev invited Norman Cousins, the editor of a major US periodical and an anti-nuclear weapons activist, to serve as liaison with President Kennedy, and Cousins met with Khrushchev for four hours in December 1962. Kennedy's response to Khrushchev's proposals was lukewarm but Kennedy expressed to Cousins that he felt constrained in exploring these issues due to pressure from hardliners in the US national security apparatus. The United States and the Soviet Union did shortly thereafter agree on a treaty banning atmospheric testing of nuclear weapons, known as the "Partial Nuclear Test Ban Treaty". Further after the crisis, the US and the USSR created the Moscow–Washington hotline, a direct communications link between Moscow and Washington. The purpose was to have a way that the leaders of the two Cold War countries could communicate directly to solve such a crisis. The compromise embarrassed Khrushchev and the Soviet Union because the withdrawal of US missiles from Italy and Turkey was a secret deal between Kennedy and Khrushchev. Khrushchev went to Kennedy as he thought that the crisis was getting out of hand, but the Soviets were seen as retreating from circumstances that they had started. Khrushchev's fall from power two years later was in part because of the Soviet Politburo's embarrassment at both Khrushchev's eventual concessions to the US and this ineptitude in precipitating the crisis in the first place. According to Dobrynin, the top Soviet leadership took the Cuban outcome as "a blow to its prestige bordering on humiliation". The worldwide US Forces DEFCON 3 status was returned to DEFCON 4 on 20 November 1962. General Curtis LeMay told the President that the resolution of the crisis was the "greatest defeat in our history"; his was a minority position. He had pressed for an immediate invasion of Cuba as soon as the crisis began and still favored invading Cuba even after the Soviets had withdrawn their missiles. Twenty-five years later, LeMay still believed that "We could have gotten not only the missiles out of Cuba, we could have gotten the Communists out of Cuba at that time." By 1962, President Kennedy had faced four crisis situations: the failure of the Bay of Pigs Invasion, settlement negotiations between the pro-Western government of Laos and the Pathet Lao communist movement ("Kennedy sidestepped Laos, whose rugged terrain was no battleground for American soldiers."), the construction of the Berlin Wall, and the Cuban Missile Crisis. Kennedy believed that yet another failure to gain control and stop communist expansion would irreparably damage US credibility. He was determined to "draw a line in the sand" and prevent a communist victory in Vietnam. He told James Reston of The New York Times immediately after his Vienna summit meeting with Khrushchev, "Now we have a problem making our power credible and Vietnam looks like the place." As Kennedy would be assassinated on 22 November 1963 during as visit to Texas, vice president Lyndon B. Johnson assumed the presidency on the same day to which he would remain until January 1969 when succeed by Richard Nixon. At least four contingency strikes were armed and launched from Florida against Cuban airfields and suspected missile sites in 1963 and 1964, although all were diverted to the Pinecastle Range Complex after the planes passed Andros island. Critics, including Seymour Melman and Seymour Hersh, suggested that the Cuban Missile Crisis encouraged the United States' use of military means, such as the case in the later Vietnam War. Similarly, Lorraine Bayard de Volo has suggested that the masculine brinksmanship of the Cuban Missile Crisis has become a 'touchstone of toughness by which presidents are measured'. Actions in 1962 would go on to have a significant influence on the future policy decisions of those who occupied the White House, leading to foreign policy decisions such as President Lyndon B. Johnson's escalation of the war in Vietnam three years following the crisis. U-2 pilot Anderson's body was returned to the US and was buried with full military honours in South Carolina. He was the first recipient of the newly created Air Force Cross, which was awarded posthumously. Although Anderson was the only combatant fatality during the crisis, 11 crew members of three reconnaissance Boeing RB-47 Stratojets of the 55th Strategic Reconnaissance Wing were also killed in crashes during the period between 27 September and 11 November 1962. Seven crew died when a Military Air Transport Service Boeing C-135B Stratolifter delivering ammunition to Guantanamo Bay Naval Base stalled and crashed on approach on 23 October. Arguably, the most dangerous moment in the crisis was not recognized until the Cuban Missile Crisis Havana conference, in October 2002. Attended by many of the veterans of the crisis, they all learned that on 27 October 1962, USS Beale had tracked and dropped signalling depth charges (the size of hand grenades) on B-59, a Soviet Project 641 (NATO designation Foxtrot) submarine. Unknown to the US, it was armed with a 15-kiloton nuclear torpedo. Running out of air, the Soviet submarine was surrounded by American warships and desperately needed to surface. An argument broke out among three officers aboard B-59, including submarine captain Valentin Savitsky, political officer Ivan Semyonovich Maslennikov, and Deputy brigade commander Captain 2nd rank (US Navy Commander rank equivalent) Vasily Arkhipov. An exhausted Savitsky became furious and ordered that the nuclear torpedo on board be made combat ready. Accounts differ about whether Arkhipov convinced Savitsky not to make the attack or whether Savitsky himself finally concluded that the only reasonable choice left open to him was to come to the surface. During the conference, McNamara stated that nuclear war had come much closer than people had thought. Thomas Blanton, director of the National Security Archive, said, "A guy called Vasily Arkhipov saved the world." In early 1992, it was confirmed that Soviet forces in Cuba had already received tactical nuclear warheads for their artillery rockets and Il-28 bombers when the crisis broke. Castro stated that he would have recommended their use if the US invaded despite Cuba being destroyed. Fifty years after the crisis, Graham Allison wrote: Fifty years ago, the Cuban missile crisis brought the world to the brink of nuclear disaster. During the standoff, US President John F. Kennedy thought the chance of escalation to war was "between 1 in 3 and even", and what we have learned in later decades has done nothing to lengthen those odds. We now know, for example, that in addition to nuclear-armed ballistic missiles, the Soviet Union had deployed 100 tactical nuclear weapons to Cuba, and the local Soviet commander there could have launched these weapons without additional codes or commands from Moscow. The US air strike and invasion that were scheduled for the third week of the confrontation would likely have triggered a nuclear response against American ships and troops, and perhaps even Miami. The resulting war might have led to the deaths of over 100 million Americans and over 100 million Russians. BBC journalist Joe Matthews published the story, on 13 October 2012, behind the 100 tactical nuclear warheads mentioned by Graham Allison in the excerpt above. Khrushchev feared that Castro's hurt pride and widespread Cuban indignation over the concessions he had made to Kennedy might lead to a breakdown of the agreement between the Soviet Union and the United States. To prevent that, Khrushchev decided to offer to give Cuba more than 100 tactical nuclear weapons that had been shipped to Cuba along with the long-range missiles but, crucially, had escaped the notice of US intelligence. Khrushchev determined that because the Americans had not listed the missiles on their list of demands, keeping them in Cuba would be in the Soviet Union's interests. Anastas Mikoyan was tasked with the negotiations with Castro over the missile transfer deal that was designed to prevent a breakdown in the relations between Cuba and the Soviet Union. While in Havana, Mikoyan witnessed the mood swings and paranoia of Castro, who was convinced that Moscow had made the agreement with the US at the expense of Cuba's defence. Mikoyan, on his own initiative, decided that Castro and his military should not be given control of weapons with an explosive force equal to 100 Hiroshima-sized bombs under any circumstances. He defused the seemingly intractable situation, which risked re-escalating the crisis, on 22 November 1962. During a tense, four-hour meeting, Mikoyan convinced Castro that despite Moscow's desire to help, it would be in breach of an unpublished Soviet law, which did not actually exist, to transfer the missiles permanently into Cuban hands and provide them with an independent nuclear deterrent. Castro was forced to give way and, much to the relief of Khrushchev and the rest of the Soviet government, the tactical nuclear weapons were crated and returned by sea to the Soviet Union during December 1962. The American popular media, especially television, made frequent use of the events of the missile crisis in both fictional and documentary forms. Jim Willis includes the Crisis as one of the 100 "media moments that changed America". Sheldon Stern finds that a half century later there are still many "misconceptions, half-truths, and outright lies" that have shaped media versions of what happened in the White House during those harrowing two weeks. Historian William Cohn argued in a 1976 article that television programs are typically the main source used by the American public to know about and interpret the past. According to Cold War historian Andrei Kozovoi, the Soviet media proved somewhat disorganized as it was unable to generate a coherent popular history. Khrushchev lost power and was airbrushed out of the story. Cuba was no longer portrayed as a heroic David against the American Goliath. One contradiction that pervaded the Soviet media campaign was between the pacifistic rhetoric of the peace movement that emphasizes the horrors of nuclear war and the militancy of the need to prepare Soviets for war against American aggression.	[ { "paragraph_id": 0, "text": "The Cuban Missile Crisis, in Russian known as the Caribbean Crisis (Карибский кризис) and in Cuba as the October Crisis (Spanish: Crisis de Octubre), was a 13-day confrontation between the United States and the Soviet Union, when American deployments of nuclear missiles in Italy and Turkey were matched by Soviet deployments of nuclear missiles in Cuba. The crisis lasted from 16 to 28 October 1962. The confrontation is widely considered the closest the Cold War came to escalating into full-scale nuclear war.", "title": "" }, { "paragraph_id": 1, "text": "In 1961, the US government put Jupiter nuclear missiles in Italy and Turkey. It had also trained a paramilitary force of Cuban exiles, which the CIA led in an attempt to invade Cuba and overthrow its government. Starting in November of that year, the US government engaged in a violent campaign of terrorism and sabotage in Cuba, referred to as the Cuban Project, which continued throughout the first half of the 1960s. The Soviet administration was concerned about a Cuban drift towards China, with which the Soviets had an increasingly fractious relationship. In response to these factors, Soviet First Secretary, Nikita Khrushchev, agreed with the Cuban Prime Minister, Fidel Castro, to place nuclear missiles on the island of Cuba to deter a future invasion. An agreement was reached during a secret meeting between Khrushchev and Castro in July 1962, and construction of a number of missile launch facilities started later that summer.", "title": "" }, { "paragraph_id": 2, "text": "During the campaigning for the 1962 United States elections, the White House denied the charges for months and ignored the presence of Soviet missiles positioned approximately 90 mi (140 km) away from Florida. Later, the missile preparations were confirmed when a US Air Force U-2 spy plane produced clear photographic evidence of medium-range R-12 (NATO code name SS-4) and intermediate-range R-14 (NATO code name SS-5) ballistic missile facilities.", "title": "" }, { "paragraph_id": 3, "text": "When this was reported to President John F. Kennedy, he then convened a meeting of the nine members of the National Security Council and five other key advisers, in a group that became known as the Executive Committee of the National Security Council (EXCOMM). During this meeting, President Kennedy was originally advised to carry out an air strike on Cuban soil in order to compromise Soviet missile supplies, followed by an invasion of the Cuban mainland. After careful consideration, President Kennedy chose a less aggressive course of action, in order to avoid a declaration of war. After consultation with EXCOMM, Kennedy ordered a naval \"quarantine\" on 22 October to prevent further missiles from reaching Cuba. By using the term \"quarantine\", rather than \"blockade\" (an act of war by legal definition), the United States was able to avoid the implications of a state of war. The US announced it would not permit offensive weapons to be delivered to Cuba and demanded that the weapons already in Cuba be dismantled and returned to the Soviet Union.", "title": "" }, { "paragraph_id": 4, "text": "After several days of tense negotiations, an agreement was reached between Kennedy and Khrushchev: publicly, the Soviets would dismantle their offensive weapons in Cuba and return them to the Soviet Union, subject to United Nations verification, in exchange for a US public declaration and agreement to not invade Cuba again. Secretly, the United States agreed with the Soviets that it would dismantle all of the Jupiter MRBMs which had been deployed to Turkey against the Soviet Union. There has been debate on whether Italy was included in the agreement as well. While the Soviets dismantled their missiles, some Soviet bombers remained in Cuba, and the United States kept the naval quarantine in place until 20 November 1962.", "title": "" }, { "paragraph_id": 5, "text": "When all offensive missiles and the Ilyushin Il-28 light bombers had been withdrawn from Cuba, the blockade was formally ended on 20 November. The negotiations between the United States and the Soviet Union pointed out the necessity of a quick, clear, and direct communication line between the two superpowers. As a result, the Moscow–Washington hotline was established. A series of agreements later reduced US–Soviet tensions for several years, until both parties eventually resumed expanding their nuclear arsenals.", "title": "" }, { "paragraph_id": 6, "text": "The compromise embarrassed Khrushchev and the Soviet Union because the withdrawal of US missiles from Italy and Turkey was a secret deal between Kennedy and Khrushchev, and the Soviets were seen as retreating from circumstances that they had started. Khrushchev's fall from power two years later was in part because of the Soviet Politburo's embarrassment at both Khrushchev's eventual concessions to the US and his ineptitude in precipitating the crisis in the first place. According to Dobrynin, the top Soviet leadership took the Cuban outcome as \"a blow to its prestige bordering on humiliation\".", "title": "" }, { "paragraph_id": 7, "text": "In late 1961, Fidel Castro asked for more SA-2 anti-aircraft missiles from the Soviet Union. The request was not acted upon by the Soviet leadership. In the interval Fidel Castro began criticizing the Soviets for lack of \"revolutionary boldness\", and began talking to China about agreements for economic assistance. In March 1962, Fidel Castro ordered the ousting of Anibal Escalante and his pro-Moscow comrades from Cuba's Integrated Revolutionary Organizations. This affair alarmed the Soviet leadership as well as fears of a possible US invasion. In this crisis of international relations the Soviet Union sent more SA-2 anti-aircraft missiles in April as well as a regiment of regular Soviet troops.", "title": "Background" }, { "paragraph_id": 8, "text": "Timothy Naftali has contended that Escalante's dismissal was a motivating factor behind the Soviet decision to place nuclear missiles in Cuba in 1962. According to Naftali, Soviet foreign policy planners were concerned Castro's break with Escalante foreshadowed a Cuban drift toward China and sought to solidify the Soviet-Cuban relationship through the missile basing program.", "title": "Background" }, { "paragraph_id": 9, "text": "The Cuban government regarded US imperialism as the primary explanation for the island's structural weaknesses. The US government had provided arms, money and its authority to the Batista dictatorship. The majority of the Cuban population had tired of the severe socioeconomic problems associated with the US domination of the country. The Cuban government was aware of the necessity of ending the turmoil and incongruities of US-dominated prerevolution Cuban society. It determined that the US government's demands, made as part of the hostile US reaction to Cuban government policy, were unacceptable.", "title": "Background" }, { "paragraph_id": 10, "text": "With the end of World War II and the start of the Cold War, the United States government sought to promote private enterprise as an instrument for advancing US strategic interests in the developing world. It had grown concerned about the expansion of communism.", "title": "Background" }, { "paragraph_id": 11, "text": "In December 1959, under the Eisenhower administration and less than twelve months after the Cuban Revolution, the Central Intelligence Agency (CIA) developed a plan for paramilitary action against Cuba. The CIA recruited operatives on the island to carry out terrorism and sabotage, kill civilians, and cause economic damage. At the initiative of the CIA Deputy Director for Plans, Richard Bissell, and approved by the new President John F. Kennedy, the US launched the attempted Bay of Pigs Invasion of Cuba in April 1961. It used CIA-trained forces of Cuban expatriates. The complete failure of the invasion, and the exposure of the US government role before the operation began, was a source of diplomatic embarrassment for the administration. Afterward, former President Eisenhower told Kennedy that \"the failure of the Bay of Pigs will embolden the Soviets to do something that they would otherwise not do.\"", "title": "Background" }, { "paragraph_id": 12, "text": "Following the failed invasion, the US massively escalated its sponsorship of terrorism against Cuba. In late 1961, using the military and the Central Intelligence Agency, the US government engaged in an extensive campaign of state-sponsored terrorism against civilian and military targets on the island. The terrorist attacks killed significant numbers of civilians. The US armed, trained, funded and directed the terrorists, most of whom were Cuban expatriates. Terrorist attacks were planned at the direction and with the participation of US government employees and launched from US territory. In January 1962, US Air Force General Edward Lansdale described the plans to overthrow the Cuban government in a top-secret report, addressed to Kennedy and officials involved with Operation Mongoose. CIA agents or \"pathfinders\" from the Special Activities Division were to be infiltrated into Cuba to carry out sabotage and organization, including radio broadcasts. In February 1962, the US launched an embargo against Cuba, and Lansdale presented a 26-page, top-secret timetable for implementation of the overthrow of the Cuban government, mandating guerrilla operations to begin in August and September. \"Open revolt and overthrow of the Communist regime\" was hoped by the planners to occur in the first two weeks of October.", "title": "Background" }, { "paragraph_id": 13, "text": "The terrorism campaign and the threat of invasion were crucial factors in the Soviet decision to position the missiles on Cuba, and in the Cuban government's decision to accept. The US government was aware at the time, as reported to the president in a National Intelligence Estimate, that the invasion threat was a key reason for Cuban acceptance of the missiles.", "title": "Background" }, { "paragraph_id": 14, "text": "When Kennedy ran for president in 1960, one of his key election issues was an alleged \"missile gap\" with the Soviets. In fact, the US at that time led the Soviets by a wide margin, which would only increase over time. In 1961, the Soviets had only four R-7 Semyorka intercontinental ballistic missiles (ICBMs). By October 1962, some intelligence estimates indicated a figure of 75.", "title": "Background" }, { "paragraph_id": 15, "text": "The US, on the other hand, had 170 ICBMs and was quickly building more. It also had eight George Washington- and Ethan Allen-class ballistic missile submarines, with the capability to launch 16 Polaris missiles, each with a range of 2,500 nautical miles (4,600 km). Khrushchev increased the perception of a missile gap when he loudly boasted to the world that the Soviets were building missiles \"like sausages\" but Soviet missiles' numbers and capabilities were nowhere close to his assertions. The Soviet Union had medium-range ballistic missiles in quantity, about 700 of them, but they were unreliable and inaccurate. The US had a considerable advantage in its total number of nuclear warheads (27,000 against 3,600) and in the technology required for their accurate delivery. The US also led in missile defensive capabilities, naval and air power; however, the Soviets held a two-to-one advantage in conventional ground forces, more pronounced in field guns and tanks, particularly in the European theatre.", "title": "Background" }, { "paragraph_id": 16, "text": "The Soviet First Secretary, Nikita Khrushchev, also had an impression of Kennedy as weak, which to him was confirmed by the President's response during the Berlin Crisis of 1961, particularly to the building of the Berlin Wall by East Germany to prevent its citizens from emigrating to the West. The half-hearted nature of the Bay of Pigs invasion reinforced Khrushchev and his advisers impression that Kennedy was indecisive and, as one Soviet aide wrote, \"too young, intellectual, not prepared well for decision making in crisis situations... too intelligent and too weak\". Speaking to Soviet officials in the aftermath of the crisis, Khrushchev asserted, \"I know for certain that Kennedy doesn't have a strong background, nor, generally speaking, does he have the courage to stand up to a serious challenge.\" He also told his son Sergei that on Cuba, Kennedy \"would make a fuss, make more of a fuss, and then agree\".", "title": "Background" }, { "paragraph_id": 17, "text": "In May 1962, Soviet First Secretary Nikita Khrushchev was persuaded by the idea of countering the US's growing lead in developing and deploying strategic missiles by placing Soviet intermediate-range nuclear missiles in Cuba, despite the misgivings of the Soviet Ambassador in Havana, Alexandr Ivanovich Alexeyev, who argued that Castro would not accept the deployment of the missiles. Khrushchev faced a strategic situation in which the US was perceived to have a \"splendid first strike\" capability that put the Soviet Union at a huge disadvantage. In 1962, the Soviets had only 20 ICBMs capable of delivering nuclear warheads to the US from inside the Soviet Union. The poor accuracy and reliability of the missiles raised serious doubts about their effectiveness. A newer, more reliable generation of ICBMs would become operational only after 1965.", "title": "Prelude" }, { "paragraph_id": 18, "text": "Therefore, Soviet nuclear capability in 1962 placed less emphasis on ICBMs than on medium and intermediate-range ballistic missiles (MRBMs and IRBMs). The missiles could hit American allies and most of Alaska from Soviet territory but not the contiguous United States. Graham Allison, the director of Harvard University's Belfer Center for Science and International Affairs, points out, \"The Soviet Union could not right the nuclear imbalance by deploying new ICBMs on its own soil. In order to meet the threat it faced in 1962, 1963, and 1964, it had very few options. Moving existing nuclear weapons to locations from which they could reach American targets was one.\"", "title": "Prelude" }, { "paragraph_id": 19, "text": "A second reason that Soviet missiles were deployed to Cuba was that Khrushchev wanted to bring West Berlin, controlled by the American, British and French within Communist East Germany, into the Soviet orbit. The East Germans and Soviets considered western control over a portion of Berlin a grave threat to East Germany. Khrushchev made West Berlin the central battlefield of the Cold War. Khrushchev believed that if the US did nothing over the missile deployments in Cuba, he could muscle the West out of Berlin using said missiles as a deterrent to western countermeasures in Berlin. If the US tried to bargain with the Soviets after it became aware of the missiles, Khrushchev could demand trading the missiles for West Berlin. Since Berlin was strategically more important than Cuba, the trade would be a win for Khrushchev, as Kennedy recognized: \"The advantage is, from Khrushchev's point of view, he takes a great chance but there are quite some rewards to it.\"", "title": "Prelude" }, { "paragraph_id": 20, "text": "Thirdly, from the perspective of the Soviet Union and of Cuba, it seemed that the United States wanted to increase its presence in Cuba. In view of actions including the attempt to expel Cuba from the Organization of American States, placing economic sanctions on the nation, directly invading it, and the ongoing campaign of terrorism and sabotage the CIA was carrying out against the island, Cuban officials understood that America was trying to overrun Cuba. As a result, to try to prevent this, the USSR would place missiles in Cuba and neutralise the threat. This would ultimately serve to secure Cuba against attack and keep the country in the Socialist Bloc.", "title": "Prelude" }, { "paragraph_id": 21, "text": "Another major reason why Khrushchev planned to place missiles on Cuba undetected was to \"level the playing field\" with the evident American nuclear threat. America had the upper hand as they could launch from Turkey and destroy the USSR before they would have a chance to react. After the emplacement of nuclear missiles in Cuba, Khrushchev had finally established mutual assured destruction, meaning that if the United States decided to launch a nuclear strike against the Soviet Union, the latter would react by launching a retaliatory nuclear strike against the US.", "title": "Prelude" }, { "paragraph_id": 22, "text": "Finally, placing nuclear missiles on Cuba was a way for the USSR to show their support for Cuba and support the Cuban people who viewed the United States as a threatening force, as the latter had become their ally after the Cuban Revolution of 1959. According to Khrushchev, the Soviet Union's motives were \"aimed at allowing Cuba to live peacefully and develop as its people desire\".", "title": "Prelude" }, { "paragraph_id": 23, "text": "Schlesinger, a historian and adviser to Kennedy, told National Public Radio in an interview on 16 October 2002, that Castro did not want the missiles, but Khrushchev pressured Castro to accept them. Castro was not completely happy with the idea, but the Cuban National Directorate of the Revolution accepted them, both to protect Cuba against US attack and to aid the Soviet Union.", "title": "Prelude" }, { "paragraph_id": 24, "text": "In early 1962, a group of Soviet military and missile construction specialists accompanied an agricultural delegation to Havana. They obtained a meeting with Cuban prime minister Fidel Castro. The Cuban leadership had a strong expectation that the US would invade Cuba again and enthusiastically approved the idea of installing nuclear missiles in Cuba. According to another source, Castro objected to the missiles' deployment as making him look like a Soviet puppet, but he was persuaded that missiles in Cuba would be an irritant to the US and help the interests of the entire socialist camp. The deployment would include short-range tactical weapons (with a range of 40 km, usable only against naval vessels) that would provide a \"nuclear umbrella\" for attacks upon the island.", "title": "Prelude" }, { "paragraph_id": 25, "text": "By May, Khrushchev and Castro agreed to place strategic nuclear missiles secretly in Cuba. Like Castro, Khrushchev felt that a US invasion of Cuba was imminent and that to lose Cuba would do great harm to the communists, especially in Latin America. He said he wanted to confront the Americans \"with more than words.... the logical answer was missiles\". The Soviets maintained their tight secrecy, writing their plans longhand, which were approved by Marshal of the Soviet Union Rodion Malinovsky on 4 July and Khrushchev on 7 July.", "title": "Prelude" }, { "paragraph_id": 26, "text": "From the very beginning, the Soviets' operation entailed elaborate denial and deception, known as \"maskirovka\". All the planning and preparation for transporting and deploying the missiles were carried out in the utmost secrecy, with only a very few told the exact nature of the mission. Even the troops detailed for the mission were given misdirection by being told that they were headed for a cold region and being outfitted with ski boots, fleece-lined parkas, and other winter equipment. The Soviet code-name was Operation Anadyr. The Anadyr River flows into the Bering Sea, and Anadyr is also the capital of Chukotsky District and a bomber base in the far eastern region. All the measures were meant to conceal the program from both internal and external audiences.", "title": "Prelude" }, { "paragraph_id": 27, "text": "Specialists in missile construction, under the guise of machine operators and agricultural specialists, arrived in July. A total of 43,000 foreign troops would ultimately be brought in. Chief Marshal of Artillery Sergei Biryuzov, Head of the Soviet Rocket Forces, led a survey team that visited Cuba. He told Khrushchev that the missiles would be concealed and camouflaged by palm trees.", "title": "Prelude" }, { "paragraph_id": 28, "text": "As early as August 1962, the US suspected the Soviets of building missile facilities in Cuba. During that month, its intelligence services gathered information about sightings by ground observers of Soviet-built MiG-21 fighters and Il-28 light bombers. U-2 spy planes found S-75 Dvina (NATO designation SA-2) surface-to-air missile sites at eight different locations. CIA director John A. McCone was suspicious. Sending antiaircraft missiles into Cuba, he reasoned, \"made sense only if Moscow intended to use them to shield a base for ballistic missiles aimed at the United States\". On 10 August, he wrote a memo to Kennedy in which he guessed that the Soviets were preparing to introduce ballistic missiles into Cuba. Che Guevara himself traveled to the Soviet Union on 30 August 1962, to sign off on the final agreement regarding the deployment of missiles in Cuba. The visit was heavily monitored by the CIA as Guevara had gained more scruitiny by American intelligence. While in the Soviet Union Guevara argued with Khrushchev that the missile deal should be made public but Khrushchev insisted on total secrecy, and swore the Soviet Union's support if the Americans discovered the missiles. By the time Guevara arrived in Cuba the United States had already discovered the Soviet troops in Cuba via U-2 spy planes.", "title": "Prelude" }, { "paragraph_id": 29, "text": "With important Congressional elections scheduled for November, the crisis became enmeshed in American politics. On 31 August, Senator Kenneth Keating (R-New York) warned on the Senate floor that the Soviet Union was \"in all probability\" constructing a missile base in Cuba. He charged the Kennedy administration with covering up a major threat to the US, thereby starting the crisis. He may have received this initial \"remarkably accurate\" information from his friend, former congresswoman and ambassador Clare Boothe Luce, who in turn received it from Cuban exiles. A later confirming source for Keating's information possibly was the West German ambassador to Cuba, who had received information from dissidents inside Cuba that Soviet troops had arrived in Cuba in early August and were seen working \"in all probability on or near a missile base\" and who passed this information to Keating on a trip to Washington in early October. Air Force General Curtis LeMay presented a pre-invasion bombing plan to Kennedy in September, and spy flights and minor military harassment from US forces at Guantanamo Bay Naval Base were the subject of continual Cuban diplomatic complaints to the US government.", "title": "Prelude" }, { "paragraph_id": 30, "text": "The first consignment of Soviet R-12 missiles arrived on the night of 8 September, followed by a second on 16 September. The R-12 was a medium-range ballistic missile, capable of carrying a thermonuclear warhead. It was a single-stage, road-transportable, surface-launched, storable liquid propellant fuelled missile that could deliver a megaton-class nuclear weapon. The Soviets were building nine sites—six for R-12 medium-range missiles (NATO designation SS-4 Sandal) with an effective range of 2,000 kilometres (1,200 mi) and three for R-14 intermediate-range ballistic missiles (NATO designation SS-5 Skean) with a maximum range of 4,500 kilometres (2,800 mi).", "title": "Prelude" }, { "paragraph_id": 31, "text": "On 7 October, Cuban President Osvaldo Dorticós Torrado spoke at the UN General Assembly: \"If... we are attacked, we will defend ourselves. I repeat, we have sufficient means with which to defend ourselves; we have indeed our inevitable weapons, the weapons, which we would have preferred not to acquire, and which we do not wish to employ.\" On 11 October in another Senate speech, Sen Keating reaffirmed his earlier warning of 31 August and stated that, \"Construction has begun on at least a half dozen launching sites for intermediate range tactical missiles.\"", "title": "Prelude" }, { "paragraph_id": 32, "text": "The Cuban leadership was further upset when on 20 September, the US Senate approved Joint Resolution 230, which expressed the US was determined \"to prevent in Cuba the creation or use of an externally-supported military capability endangering the security of the United States\". On the same day, the US announced a major military exercise in the Caribbean, PHIBRIGLEX-62, which Cuba denounced as a deliberate provocation and proof that the US planned to invade Cuba.", "title": "Prelude" }, { "paragraph_id": 33, "text": "The Soviet leadership believed, based on its perception of Kennedy's lack of confidence during the Bay of Pigs Invasion, that he would avoid confrontation and accept the missiles as a fait accompli. On 11 September, the Soviet Union publicly warned that a US attack on Cuba or on Soviet ships that were carrying supplies to the island would mean war. The Soviets continued the Maskirovka program to conceal their actions in Cuba. They repeatedly denied that the weapons being brought into Cuba were offensive in nature. On 7 September, Soviet Ambassador to the United States Anatoly Dobrynin assured United States Ambassador to the United Nations Adlai Stevenson that the Soviet Union was supplying only defensive weapons to Cuba. On 11 September, the Telegraph Agency of the Soviet Union (TASS: Telegrafnoe Agentstvo Sovetskogo Soyuza) announced that the Soviet Union had no need or intention to introduce offensive nuclear missiles into Cuba. On 13 October, Dobrynin was questioned by former Undersecretary of State Chester Bowles about whether the Soviets planned to put offensive weapons in Cuba. He denied any such plans. On 17 October, Soviet embassy official Georgy Bolshakov brought President Kennedy a personal message from Khrushchev reassuring him that \"under no circumstances would surface-to-surface missiles be sent to Cuba.\"", "title": "Prelude" }, { "paragraph_id": 34, "text": "The missiles in Cuba allowed the Soviets to effectively target most of the Continental US. The planned arsenal was forty launchers. The Cuban populace readily noticed the arrival and deployment of the missiles and hundreds of reports reached Miami. US intelligence received countless reports, many of dubious quality or even laughable, most of which could be dismissed as describing defensive missiles.", "title": "Missiles reported" }, { "paragraph_id": 35, "text": "Only five reports bothered the analysts. They described large trucks passing through towns at night that were carrying very long canvas-covered cylindrical objects that could not make turns through towns without backing up and maneuvering. Defensive missile transporters, it was believed, could make such turns without undue difficulty. The reports could not be satisfactorily dismissed.", "title": "Missiles reported" }, { "paragraph_id": 36, "text": "The United States had been sending U-2 surveillance over Cuba since the failed Bay of Pigs Invasion. The first issue that led to a pause in reconnaissance flights took place on 30 August, when a U-2 operated by the US Air Force's Strategic Air Command flew over Sakhalin Island in the Soviet Far East by mistake. The Soviets lodged a protest and the US apologized. Nine days later, a Taiwanese-operated U-2 was lost over western China to an SA-2 surface-to-air missile (SAM). US officials were worried that one of the Cuban or Soviet SAMs in Cuba might shoot down a CIA U-2, initiating another international incident. In a meeting with members of the Committee on Overhead Reconnaissance (COMOR) on 10 September, Secretary of State Dean Rusk and National Security Advisor McGeorge Bundy heavily restricted further U-2 flights over Cuban airspace. The resulting lack of coverage over the island for the next five weeks became known to historians as the \"Photo Gap\". No significant U-2 coverage was achieved over the interior of the island. US officials attempted to use a Corona photo-reconnaissance satellite to obtain coverage over reported Soviet military deployments, but imagery acquired over western Cuba by a Corona KH-4 mission on October 1 was heavily covered by clouds and haze and failed to provide any usable intelligence. At the end of September, Navy reconnaissance aircraft photographed the Soviet ship Kasimov, with large crates on its deck the size and shape of Il-28 jet bomber fuselages.", "title": "Missiles reported" }, { "paragraph_id": 37, "text": "In September 1962, analysts from the Defense Intelligence Agency (DIA) noticed that Cuban surface-to-air missile sites were arranged in a pattern similar to those used by the Soviet Union to protect its ICBM bases, leading DIA to lobby for the resumption of U-2 flights over the island. Although in the past the flights had been conducted by the CIA, pressure from the Defense Department led to that authority being transferred to the Air Force. Following the loss of a CIA U-2 over the Soviet Union in May 1960, it was thought that if another U-2 were shot down, an Air Force aircraft arguably being used for a legitimate military purpose would be easier to explain than a CIA flight.", "title": "Missiles reported" }, { "paragraph_id": 38, "text": "When the reconnaissance missions were reauthorized on 9 October, poor weather kept the planes from flying. The US first obtained U-2 photographic evidence of the missiles on 14 October, when a U-2 flight piloted by Major Richard Heyser took 928 pictures on a path selected by DIA analysts, capturing images of what turned out to be an SS-4 construction site at San Cristóbal, Pinar del Río Province (now in Artemisa Province), in western Cuba.", "title": "Missiles reported" }, { "paragraph_id": 39, "text": "On 15 October, the CIA's National Photographic Interpretation Center (NPIC) reviewed the U-2 photographs and identified objects that they interpreted as medium range ballistic missiles. This identification was made, in part, on the strength of reporting provided by Oleg Penkovsky, a double agent in the GRU working for the CIA and MI6. Although he provided no direct reports of the Soviet missile deployments to Cuba, technical and doctrinal details of Soviet missile regiments that had been provided by Penkovsky in the months and years prior to the Crisis helped NPIC analysts correctly identify the missiles on U-2 imagery.", "title": "Missiles reported" }, { "paragraph_id": 40, "text": "That evening, the CIA notified the Department of State and at 8:30 pm EDT, Bundy chose to wait until the next morning to tell the President. McNamara was briefed at midnight. The next morning, Bundy met with Kennedy and showed him the U-2 photographs and briefed him on the CIA's analysis of the images. At 6:30 pm EDT, Kennedy convened a meeting of the nine members of the National Security Council and five other key advisers, in a group he formally named the Executive Committee of the National Security Council (EXCOMM) after the fact on 22 October by National Security Action Memorandum 196. Without informing the members of EXCOMM, President Kennedy tape-recorded all of their proceedings, and Sheldon M. Stern, head of the Kennedy library transcribed some of them.", "title": "Missiles reported" }, { "paragraph_id": 41, "text": "On 16 October, President Kennedy notified Attorney General Robert Kennedy that he was convinced the Soviets were placing missiles in Cuba and it was a legitimate threat. This made the threat of nuclear destruction by two world superpowers a reality. Robert Kennedy responded by contacting the Soviet Ambassador, Anatoly Dobrynin. Robert Kennedy expressed his \"concern about what was happening\" and Dobrynin \"was instructed by Soviet Chairman Nikita S. Khrushchev to assure President Kennedy that there would be no ground-to-ground missiles or offensive weapons placed in Cuba\". Khrushchev further assured Kennedy that the Soviet Union had no intention of \"disrupting the relationship of our two countries\" despite the photo evidence presented before President Kennedy.", "title": "Missiles reported" }, { "paragraph_id": 42, "text": "The US had no plan in place because until recently its intelligence had been convinced that the Soviets would never install nuclear missiles in Cuba. EXCOMM discussed several possible courses of action:", "title": "Missiles reported" }, { "paragraph_id": 43, "text": "The Joint Chiefs of Staff unanimously agreed that a full-scale attack and invasion was the only solution. They believed that the Soviets would not attempt to stop the US from conquering Cuba. Kennedy was skeptical:", "title": "Missiles reported" }, { "paragraph_id": 44, "text": "They, no more than we, can let these things go by without doing something. They can't, after all their statements, permit us to take out their missiles, kill a lot of Russians, and then do nothing. If they don't take action in Cuba, they certainly will in Berlin.", "title": "Missiles reported" }, { "paragraph_id": 45, "text": "Kennedy concluded that attacking Cuba by air would signal the Soviets to presume \"a clear line\" to conquer Berlin. Kennedy also believed that US allies would think of the country as \"trigger-happy cowboys\" who lost Berlin because they could not peacefully resolve the Cuban situation.", "title": "Missiles reported" }, { "paragraph_id": 46, "text": "The EXCOMM then discussed the effect on the strategic balance of power, both political and military. The Joint Chiefs of Staff believed that the missiles would seriously alter the military balance, but McNamara disagreed. An extra 40, he reasoned, would make little difference to the overall strategic balance. The US already had approximately 5,000 strategic warheads, but the Soviet Union had only 300. McNamara concluded that the Soviets having 340 would not therefore substantially alter the strategic balance. In 1990, he reiterated that \"it made no difference.... The military balance wasn't changed. I didn't believe it then, and I don't believe it now.\"", "title": "Missiles reported" }, { "paragraph_id": 47, "text": "The EXCOMM agreed that the missiles would affect the political balance. Kennedy had explicitly promised the American people less than a month before the crisis that \"if Cuba should possess a capacity to carry out offensive actions against the United States... the United States would act.\" Further, US credibility among its allies and people would be damaged if the Soviet Union appeared to redress the strategic imbalance by placing missiles in Cuba. Kennedy explained after the crisis that \"it would have politically changed the balance of power. It would have appeared to, and appearances contribute to reality.\"", "title": "Missiles reported" }, { "paragraph_id": 48, "text": "On 18 October, Kennedy met with Soviet Minister of Foreign Affairs Andrei Gromyko, who claimed the weapons were for defensive purposes only. Not wanting to expose what he already knew and to avoid panicking the American public, Kennedy did not reveal that he was already aware of the missile buildup.", "title": "Missiles reported" }, { "paragraph_id": 49, "text": "Two Operational Plans (OPLAN) were considered. OPLAN 316 envisioned a full invasion of Cuba by Army and Marine units, supported by the Navy, following Air Force and naval airstrikes. Army units in the US would have had trouble fielding mechanised and logistical assets, and the US Navy could not supply enough amphibious shipping to transport even a modest armoured contingent from the Army.", "title": "Operational plans" }, { "paragraph_id": 50, "text": "OPLAN 312, primarily an Air Force and Navy carrier operation, was designed with enough flexibility to do anything from engaging individual missile sites to providing air support for OPLAN 316's ground forces.", "title": "Operational plans" }, { "paragraph_id": 51, "text": "Kennedy met with members of EXCOMM and other top advisers throughout 21 October, considering two remaining options: an air strike primarily against the Cuban missile bases or a naval blockade of Cuba. A full-scale invasion was not the administration's first option. McNamara supported the naval blockade as a strong but limited military action that left the US in control. The term \"blockade\" was problematic – according to international law, a blockade is an act of war, but the Kennedy administration did not think that the Soviets would be provoked to attack by a mere blockade. Additionally, legal experts at the State Department and Justice Department concluded that a declaration of war could be avoided if another legal justification, based on the Rio Treaty for defence of the Western Hemisphere, was obtained from a resolution by a two-thirds vote from the members of the Organization of American States (OAS).", "title": "Blockade" }, { "paragraph_id": 52, "text": "Admiral George Anderson, Chief of Naval Operations wrote a position paper that helped Kennedy to differentiate between what they termed a \"quarantine\" of offensive weapons and a blockade of all materials, claiming that a classic blockade was not the original intention. Since it would take place in international waters, Kennedy obtained the approval of the OAS for military action under the hemispheric defence provisions of the Rio Treaty:", "title": "Blockade" }, { "paragraph_id": 53, "text": "Latin American participation in the quarantine now involved two Argentine destroyers which were to report to the US Commander South Atlantic [COMSOLANT] at Trinidad on November 9. An Argentine submarine and a Marine battalion with lift were available if required. In addition, two Venezuelan destroyers (Destroyers ARV D-11 Nueva Esparta\" and \"ARV D-21 Zulia\") and one submarine (Caribe) had reported to COMSOLANT, ready for sea by November 2. The Government of Trinidad and Tobago offered the use of Chaguaramas Naval Base to warships of any OAS nation for the duration of the \"quarantine\". The Dominican Republic had made available one escort ship. Colombia was reported ready to furnish units and had sent military officers to the US to discuss this assistance. The Argentine Air Force informally offered three SA-16 aircraft in addition to forces already committed to the \"quarantine\" operation.", "title": "Blockade" }, { "paragraph_id": 54, "text": "This initially was to involve a naval blockade against offensive weapons within the framework of the Organization of American States and the Rio Treaty. Such a blockade might be expanded to cover all types of goods and air transport. The action was to be backed up by surveillance of Cuba. The CNO's scenario was followed closely in later implementing the \"quarantine.\"", "title": "Blockade" }, { "paragraph_id": 55, "text": "On 19 October, the EXCOMM formed separate working groups to examine the air strike and blockade options, and by the afternoon most support in the EXCOMM had shifted to a blockade. Reservations about the plan continued to be voiced as late as 21 October, the paramount concern being that once the blockade was put into effect, the Soviets would rush to complete some of the missiles. Consequently, the US could find itself bombing operational missiles if the blockade did not force Khrushchev to remove the missiles already on the island.", "title": "Blockade" }, { "paragraph_id": 56, "text": "At 3:00 pm EDT on 22 October, President Kennedy formally established the executive committee (EXCOMM) with National Security Action Memorandum (NSAM) 196. At 5:00 pm, he met with Congressional leaders, who contentiously opposed a blockade and demanded a stronger response. In Moscow, US Ambassador Foy D. Kohler briefed Khrushchev on the pending blockade and Kennedy's speech to the nation. Ambassadors around the world gave notice to non-Eastern Bloc leaders. Before the speech, US delegations met with Canadian Prime Minister John Diefenbaker, British Prime Minister Harold Macmillan, West German Chancellor Konrad Adenauer, French President Charles de Gaulle and Secretary-General of the Organization of American States, José Antonio Mora to brief them on this intelligence and the US's proposed response. All were supportive of the US position. Over the course of the crisis, Kennedy had daily telephone conversations with Macmillan, who was publicly supportive of US actions.", "title": "Blockade" }, { "paragraph_id": 57, "text": "Shortly before his speech, Kennedy telephoned former President Dwight Eisenhower. Kennedy's conversation with the former president also revealed that the two had been consulting during the Cuban Missile Crisis. The two also anticipated that Khrushchev would respond to the Western world in a manner similar to his response during the Suez Crisis, and would possibly wind up trading off Berlin.", "title": "Blockade" }, { "paragraph_id": 58, "text": "At 7:00 pm EDT on 22 October, Kennedy delivered a nationwide televised address on all of the major networks announcing the discovery of the missiles. He noted:", "title": "Blockade" }, { "paragraph_id": 59, "text": "It shall be the policy of this nation to regard any nuclear missile launched from Cuba against any nation in the Western Hemisphere as an attack by the Soviet Union on the United States, requiring a full retaliatory response upon the Soviet Union.", "title": "Blockade" }, { "paragraph_id": 60, "text": "Kennedy described the administration's plan:", "title": "Blockade" }, { "paragraph_id": 61, "text": "To halt this offensive buildup, a strict quarantine on all offensive military equipment under shipment to Cuba is being initiated. All ships of any kind bound for Cuba, from whatever nation or port, will, if found to contain cargoes of offensive weapons, be turned back. This quarantine will be extended, if needed, to other types of cargo and carriers. We are not at this time, however, denying the necessities of life as the Soviets attempted to do in their Berlin blockade of 1948.", "title": "Blockade" }, { "paragraph_id": 62, "text": "During the speech, a directive went out to all US forces worldwide, placing them on DEFCON 3. The heavy cruiser USS Newport News was the designated flagship for the blockade, with USS Leary as Newport News's destroyer escort. Kennedy's speech writer Ted Sorensen stated in 2007 that the address to the nation was \"Kennedy's most important speech historically, in terms of its impact on our planet.\"", "title": "Blockade" }, { "paragraph_id": 63, "text": "On 24 October, at 11:24 am EDT, a cable, drafted by United States Under Secretary of State George Ball to the US Ambassador in Turkey and NATO, notified them that they were considering making an offer to withdraw the missiles from Italy and Turkey, in exchange for the Soviet withdrawal from Cuba. Turkish officials replied that they would \"deeply resent\" any trade involving the US missile presence in their country. One day later, on the morning of 25 October, American journalist Walter Lippmann proposed the same thing in his syndicated column. Castro reaffirmed Cuba's right to self-defense and said that all of its weapons were defensive and Cuba would not allow an inspection.", "title": "Blockade" }, { "paragraph_id": 64, "text": "Three days after Kennedy's speech, the Chinese People's Daily announced that \"650,000,000 Chinese men and women were standing by the Cuban people.\" In West Germany, newspapers supported the US response by contrasting it with the weak American actions in the region during the preceding months. They also expressed some fear that the Soviets might retaliate in Berlin. In France on 23 October, the crisis made the front page of all the daily newspapers. The next day, an editorial in Le Monde expressed doubt about the authenticity of the CIA's photographic evidence. Two days later, after a visit by a high-ranking CIA agent, the newspaper accepted the validity of the photographs. In the 29 October issue of Le Figaro, Raymond Aron wrote in support of the American response. On 24 October, Pope John XXIII sent a message to the Soviet embassy in Rome, to be transmitted to the Kremlin, in which he voiced his concern for peace. In this message he stated, \"We beg all governments not to remain deaf to this cry of humanity. That they do all that is in their power to save peace.\"", "title": "Blockade" }, { "paragraph_id": 65, "text": "The crisis continued unabated, and on the evening of 24 October, the Soviet TASS news agency broadcast a telegram from Khrushchev to Kennedy, in which Khrushchev warned that the United States' \"outright piracy\" would lead to war. Khrushchev then sent at 9:24 pm a telegram to Kennedy, which was received at 10:52 pm EDT. Khrushchev stated, \"if you weigh the present situation with a cool head without giving way to passion, you will understand that the Soviet Union cannot afford not to decline the despotic demands of the USA\" and that the Soviet Union viewed the blockade as \"an act of aggression\", and their ships would be instructed to ignore it. After 23 October, Soviet communications with the USA increasingly showed indications of having been rushed. Undoubtedly a product of pressure, it was not uncommon for Khrushchev to repeat himself and to send messages lacking basic editing. With President Kennedy making his aggressive intentions of a possible airstrike followed by an invasion on Cuba known, Khrushchev rapidly sought a diplomatic compromise. Communications between the two superpowers had entered into a unique and revolutionary period; with the newly developed threat of mutual destruction through the deployment of nuclear weapons, diplomacy now demonstrated how power and coercion could dominate negotiations.", "title": "Blockade" }, { "paragraph_id": 66, "text": "The US requested an emergency meeting of the United Nations Security Council on 25 October. US Ambassador to the United Nations Adlai Stevenson confronted Soviet Ambassador Valerian Zorin in an emergency meeting of the Security Council, challenging him to admit the existence of the missiles. Ambassador Zorin refused to answer. At 10:00 pm EDT the next day, the US raised the readiness level of Strategic Air Command (SAC) forces to DEFCON 2. For the only confirmed time in US history, B-52 bombers went on continuous airborne alert, and B-47 medium bombers were dispersed to various military and civilian airfields and made ready to take off, fully equipped, on 15 minutes' notice. One-eighth of SAC's 1,436 bombers were on airborne alert, and some 145 intercontinental ballistic missiles stood on ready alert, some of which targeted Cuba. Air Defense Command (ADC) redeployed 161 nuclear-armed interceptors to 16 dispersal fields within nine hours, with one third maintaining 15-minute alert status. Twenty-three nuclear-armed B-52s were sent to orbit points within striking distance of the Soviet Union so it would believe that the US was serious. Jack J. Catton later estimated that about 80 per cent of SAC's planes were ready for launch during the crisis; David A. Burchinal recalled that, by contrast:", "title": "Blockade" }, { "paragraph_id": 67, "text": "the Russians were so thoroughly stood down, and we knew it. They didn't make any move. They did not increase their alert; they did not increase any flights, or their air defense posture. They didn't do a thing, they froze in place. We were never further from nuclear war than at the time of Cuba, never further.", "title": "Blockade" }, { "paragraph_id": 68, "text": "By 22 October, Tactical Air Command (TAC) had 511 fighters, plus supporting tankers and reconnaissance aircraft, deployed to face Cuba on one-hour alert status. TAC and the Military Air Transport Service had problems. The concentration of aircraft in Florida strained command and support echelons, which faced critical undermanning in security, armaments, and communications; the absence of initial authorization for war-reserve stocks of conventional munitions forced TAC to scrounge; and the lack of airlift assets to support a major airborne drop necessitated the call-up of 24 reserve squadrons.", "title": "Blockade" }, { "paragraph_id": 69, "text": "On 25 October at 1:45 am EDT, Kennedy responded to Khrushchev's telegram by stating that the US was forced into action after receiving repeated assurances that no offensive missiles were being placed in Cuba, and when the assurances proved to be false, the deployment \"required the responses I have announced.... I hope that your government will take necessary action to permit a restoration of the earlier situation.\"", "title": "Blockade" }, { "paragraph_id": 70, "text": "At 7:15 am EDT on 25 October, USS Essex and USS Gearing attempted to intercept Bucharest but failed to do so. Fairly certain that the tanker did not contain any military material, the US allowed it through the blockade. Later that day, at 5:43 pm, the commander of the blockade effort ordered the destroyer USS Joseph P. Kennedy Jr. to intercept and board the Lebanese freighter Marucla. That took place the next day, and Marucla was cleared through the blockade after its cargo was checked.", "title": "Blockade" }, { "paragraph_id": 71, "text": "At 5:00 pm EDT on 25 October, William Clements announced that the missiles in Cuba were still actively being worked on. That report was later verified by a CIA report that suggested there had been no slowdown at all. In response, Kennedy issued Security Action Memorandum 199, authorizing the loading of nuclear weapons onto aircraft under the command of SACEUR, which had the duty of carrying out first air strikes on the Soviet Union. Kennedy claimed that the blockade had succeeded when the USSR turned back fourteen ships presumably carrying offensive weapons. The first indication of this came from a report from the British GCHQ sent to the White House Situation Room containing intercepted communications from Soviet ships reporting their positions. On 24 October, Kislovodsk, a Soviet cargo ship, reported a position north-east of where it had been 24 hours earlier indicating it had \"discontinued\" its voyage and turned back towards the Baltic. The next day, reports showed more ships originally bound for Cuba had altered their course.", "title": "Blockade" }, { "paragraph_id": 72, "text": "The next morning, 26 October, Kennedy informed the EXCOMM that he believed only an invasion would remove the missiles from Cuba. He was persuaded to give the matter time and continue with both military and diplomatic pressure. He agreed and ordered the low-level flights over the island to be increased from two per day to once every two hours. He also ordered a crash program to institute a new civil government in Cuba if an invasion went ahead.", "title": "Blockade" }, { "paragraph_id": 73, "text": "At this point, the crisis was ostensibly at a stalemate. The Soviets had shown no indication that they would back down and had made public media and private inter-governmental statements to that effect. The US had no reason to believe otherwise and was in the early stages of preparing for an invasion, along with a nuclear strike on the Soviet Union if it responded militarily, which the US assumed it would. Kennedy had no intention of keeping these plans a secret; with an array of Cuban and Soviet spies forever present, Khrushchev was quickly made aware of this looming danger.", "title": "Blockade" }, { "paragraph_id": 74, "text": "The implicit threat of air strikes on Cuba followed by invasion allowed the United States to exert pressure in future talks. It was the possibility of military action that played an influential role in accelerating Khrushchev's proposal for a compromise. Throughout the closing stages of October, Soviet communications to the United States indicated increasing defensiveness. Khrushchev's increasing tendency to use poorly phrased and ambiguous communications throughout the compromise negotiations conversely increased United States confidence and clarity in messaging. Leading Soviet figures consistently failed to mention that only the Cuban government could agree to inspections of the territory and continually made arrangements relating to Cuba without the knowledge of Fidel Castro himself. According to Dean Rusk, Khrushchev \"blinked\"; he began to panic from the consequences of his own plan, and this was reflected in the tone of Soviet messages. This allowed the US to largely dominate negotiations in late October.", "title": "Blockade" }, { "paragraph_id": 75, "text": "At 1:00 pm EDT on 26 October, John A. Scali of ABC News had lunch with Aleksandr Fomin, the cover name of Alexander Feklisov, the KGB station chief in Washington, at Fomin's request. Following the instructions of the Politburo of the CPSU, Fomin noted, \"War seems about to break out.\" He asked Scali to use his contacts to talk to his \"high-level friends\" at the State Department to see if the US would be interested in a diplomatic solution. He suggested that the language of the deal would contain an assurance from the Soviet Union to remove the weapons under UN supervision and that Castro would publicly announce that he would not accept such weapons again in exchange for a public statement by the US that it would not invade Cuba. The US responded by asking the Brazilian government to pass a message to Castro that the US would be \"unlikely to invade\" if the missiles were removed.", "title": "Secret negotiations" }, { "paragraph_id": 76, "text": "Mr. President, we and you ought not now to pull on the ends of the rope in which you have tied the knot of war, because the more the two of us pull, the tighter that knot will be tied. And a moment may come when that knot will be tied so tight that even he who tied it will not have the strength to untie it, and then it will be necessary to cut that knot, and what that would mean is not for me to explain to you, because you yourself understand perfectly of what terrible forces our countries dispose.", "title": "Secret negotiations" }, { "paragraph_id": 77, "text": "Consequently, if there is no intention to tighten that knot and thereby to doom the world to the catastrophe of thermonuclear war, then let us not only relax the forces pulling on the ends of the rope, let us take measures to untie that knot. We are ready for this.", "title": "Secret negotiations" }, { "paragraph_id": 78, "text": "— Letter From Chairman Khrushchev to President Kennedy, 26 October 1962", "title": "Secret negotiations" }, { "paragraph_id": 79, "text": "At 6:00 pm EDT on 26 October, the State Department started receiving a message that appeared to be written personally by Khrushchev. It was Saturday 2:00 am in Moscow. The long letter took several minutes to arrive, and it took translators additional time to translate and transcribe it.", "title": "Secret negotiations" }, { "paragraph_id": 80, "text": "Robert F. Kennedy described the letter as \"very long and emotional\". Khrushchev reiterated the basic outline that had been stated to Scali earlier in the day: \"I propose: we, for our part, will declare that our ships bound for Cuba are not carrying any armaments. You will declare that the United States will not invade Cuba with its troops and will not support any other forces which might intend to invade Cuba. Then the necessity of the presence of our military specialists in Cuba will disappear.\" At 6:45 pm EDT, news of Fomin's offer to Scali was finally heard and was interpreted as a \"set up\" for the arrival of Khrushchev's letter. The letter was then considered official and accurate, although it was later learned that Fomin was almost certainly operating of his own accord without official backing. Additional study of the letter was ordered and continued into the night.", "title": "Secret negotiations" }, { "paragraph_id": 81, "text": "Direct aggression against Cuba would mean nuclear war. The Americans speak about such aggression as if they did not know or did not want to accept this fact. I have no doubt they would lose such a war.", "title": "Secret negotiations" }, { "paragraph_id": 82, "text": "Castro, on the other hand, was convinced that an invasion of Cuba was soon at hand, and on 26 October, he sent a telegram to Khrushchev that appeared to call for a pre-emptive nuclear strike on the US in case of attack. In a 2010 interview, Castro expressed regret about his 1962 stance on first use: \"After I've seen what I've seen, and knowing what I know now, it wasn't worth it at all.\" Castro also ordered all anti-aircraft weapons in Cuba to fire on any US aircraft; previous orders had been to fire only on groups of two or more. At 6:00 am EDT on 27 October, the CIA delivered a memo reporting that three of the four missile sites at San Cristobal and both sites at Sagua la Grande appeared to be fully operational. It also noted that the Cuban military continued to organise for action but was under order not to initiate action unless attacked.", "title": "Secret negotiations" }, { "paragraph_id": 83, "text": "At 9:00 am EDT on 27 October, Radio Moscow began broadcasting a message from Khrushchev. Contrary to the letter of the night before, the message offered a new trade: the missiles on Cuba would be removed in exchange for the removal of the Jupiter missiles from Italy and Turkey. At 10:00 am EDT, the executive committee met again to discuss the situation and came to the conclusion that the change in the message was because of internal debate between Khrushchev and other party officials in the Kremlin. Kennedy realised that he would be in an \"insupportable position if this becomes Khrushchev's proposal\" because the missiles in Turkey were not militarily useful and were being removed anyway and \"It's gonna – to any man at the United Nations or any other rational man, it will look like a very fair trade.\" Bundy explained why Khrushchev's public acquiescence could not be considered: \"The current threat to peace is not in Turkey, it is in Cuba.\"", "title": "Secret negotiations" }, { "paragraph_id": 84, "text": "McNamara noted that another tanker, the Grozny, was about 600 miles (970 km) out and should be intercepted. He also noted that they had not made the Soviets aware of the blockade line and suggested relaying that information to them via U Thant at the United Nations.", "title": "Secret negotiations" }, { "paragraph_id": 85, "text": "While the meeting progressed, at 11:03 am EDT a new message began to arrive from Khrushchev. The message stated, in part:", "title": "Secret negotiations" }, { "paragraph_id": 86, "text": "\"You are disturbed over Cuba. You say that this disturbs you because it is ninety-nine miles by sea from the coast of the United States of America. But... you have placed destructive missile weapons, which you call offensive, in Italy and Turkey, literally next to us.... I therefore make this proposal: We are willing to remove from Cuba the means which you regard as offensive.... Your representatives will make a declaration to the effect that the United States... will remove its analogous means from Turkey... and after that, persons entrusted by the United Nations Security Council could inspect on the spot the fulfillment of the pledges made.\"", "title": "Secret negotiations" }, { "paragraph_id": 87, "text": "The executive committee continued to meet through the day.", "title": "Secret negotiations" }, { "paragraph_id": 88, "text": "Throughout the crisis, Turkey had repeatedly stated that it would be upset if the Jupiter missiles were removed. Italy's Prime Minister Amintore Fanfani, who was also Foreign Minister ad interim, offered to allow withdrawal of the missiles deployed in Apulia as a bargaining chip. He gave the message to one of his most trusted friends, Ettore Bernabei, general manager of RAI-TV, to convey to Arthur M. Schlesinger Jr. Bernabei was in New York to attend an international conference on satellite TV broadcasting.", "title": "Secret negotiations" }, { "paragraph_id": 89, "text": "On the morning of 27 October, a U-2F (the third CIA U-2A, modified for air-to-air refuelling) piloted by USAF Major Rudolf Anderson, departed its forward operating location at McCoy AFB, Florida. At approximately 12:00 pm EDT, the aircraft was struck by an SA-2 surface-to-air missile launched from Cuba. The aircraft crashed, and Anderson was killed. Stress in negotiations between the Soviets and the US intensified; only later was it assumed that the decision to fire the missile was made locally by an undetermined Soviet commander, acting on his own authority. Later that day, at about 3:41 pm EDT, several US Navy RF-8A Crusader aircraft, on low-level photo-reconnaissance missions, were fired upon.", "title": "Secret negotiations" }, { "paragraph_id": 90, "text": "On 28 October 1962, Khrushchev told his son Sergei that the shooting down of Anderson's U-2 was by the \"Cuban military at the direction of Raul Castro\".", "title": "Secret negotiations" }, { "paragraph_id": 91, "text": "At 4:00 pm EDT, Kennedy recalled members of EXCOMM to the White House and ordered that a message should immediately be sent to U Thant asking the Soviets to suspend work on the missiles while negotiations were carried out. During the meeting, General Maxwell Taylor delivered the news that the U-2 had been shot down. Kennedy had earlier claimed he would order an attack on such sites if fired upon, but he decided to not act unless another attack was made. Forty years later, McNamara said:", "title": "Secret negotiations" }, { "paragraph_id": 92, "text": "We had to send a U-2 over to gain reconnaissance information on whether the Soviet missiles were becoming operational. We believed that if the U-2 was shot down that—the Cubans didn't have capabilities to shoot it down, the Soviets did—we believed if it was shot down, it would be shot down by a Soviet surface-to-air-missile unit, and that it would represent a decision by the Soviets to escalate the conflict. And therefore, before we sent the U-2 out, we agreed that if it was shot down we wouldn't meet, we'd simply attack. It was shot down on Friday.... Fortunately, we changed our mind, we thought \"Well, it might have been an accident, we won't attack.\" Later we learned that Khrushchev had reasoned just as we did: we send over the U-2, if it was shot down, he reasoned we would believe it was an intentional escalation. And therefore, he issued orders to Pliyev, the Soviet commander in Cuba, to instruct all of his batteries not to shoot down the U-2.", "title": "Secret negotiations" }, { "paragraph_id": 93, "text": "Daniel Ellsberg said that Robert Kennedy (RFK) told him in 1964 that after the U-2 was shot down and the pilot killed, he (RFK) told Soviet ambassador Dobrynin, \"You have drawn first blood ... . [T]he president had decided against advice ... not to respond militarily to that attack, but he [Dobrynin] should know that if another plane was shot at, ... we would take out all the SAMs and antiaircraft ... . And that would almost surely be followed by an invasion.\"", "title": "Secret negotiations" }, { "paragraph_id": 94, "text": "Emissaries sent by both Kennedy and Khrushchev agreed to meet at the Yenching Palace Chinese restaurant in the Cleveland Park neighbourhood of Washington, DC, on Saturday evening, 27 October. Kennedy suggested to take Khrushchev's offer to trade away the missiles. Unknown to most members of the EXCOMM, but with the support of his brother the president, Robert Kennedy had been meeting with the Soviet Ambassador Dobrynin in Washington to discover whether the intentions were genuine. The EXCOMM was generally against the proposal because it would undermine NATO's authority, and the Turkish government had repeatedly stated it was against any such trade.", "title": "Secret negotiations" }, { "paragraph_id": 95, "text": "As the meeting progressed, a new plan emerged, and Kennedy was slowly persuaded. The new plan called for him to ignore the latest message and instead to return to Khrushchev's earlier one. Kennedy was initially hesitant, feeling that Khrushchev would no longer accept the deal because a new one had been offered, but Llewellyn Thompson argued that it was still possible. White House Special Counsel and Adviser Ted Sorensen and Robert Kennedy left the meeting and returned 45 minutes later, with a draft letter to that effect. The President made several changes, had it typed, and sent it.", "title": "Secret negotiations" }, { "paragraph_id": 96, "text": "After the EXCOMM meeting, a smaller meeting continued in the Oval Office. The group argued that the letter should be underscored with an oral message to Dobrynin that stated that if the missiles were not withdrawn, military action would be used to remove them. Rusk added one proviso that no part of the language of the deal would mention Turkey, but there would be an understanding that the missiles would be removed \"voluntarily\" in the immediate aftermath. The president agreed, and the message was sent.", "title": "Secret negotiations" }, { "paragraph_id": 97, "text": "At Rusk's request, Fomin and Scali met again. Scali asked why the two letters from Khrushchev were so different, and Fomin claimed it was because of \"poor communications\". Scali replied that the claim was not credible and shouted that he thought it was a \"stinking double cross\". He went on to claim that an invasion was only hours away, and Fomin stated that a response to the US message was expected from Khrushchev shortly and urged Scali to tell the State Department that no treachery was intended. Scali said that he did not think anyone would believe him, but he agreed to deliver the message. The two went their separate ways, and Scali immediately typed out a memo for the EXCOMM.", "title": "Secret negotiations" }, { "paragraph_id": 98, "text": "Within the US establishment, it was well understood that ignoring the second offer and returning to the first put Khrushchev in a terrible position. Military preparations continued, and all active duty Air Force personnel were recalled to their bases for possible action. Robert Kennedy later recalled the mood: \"We had not abandoned all hope, but what hope there was now rested with Khrushchev's revising his course within the next few hours. It was a hope, not an expectation. The expectation was military confrontation by Tuesday [30 October], and possibly tomorrow [29 October] ....\"", "title": "Secret negotiations" }, { "paragraph_id": 99, "text": "At 8:05 pm EDT, the letter drafted earlier in the day was delivered. The message read, \"As I read your letter, the key elements of your proposals—which seem generally acceptable as I understand them—are as follows: 1) You would agree to remove these weapons systems from Cuba under appropriate United Nations observation and supervision; and undertake, with suitable safe-guards, to halt the further introduction of such weapon systems into Cuba. 2) We, on our part, would agree—upon the establishment of adequate arrangements through the United Nations, to ensure the carrying out and continuation of these commitments (a) to remove promptly the quarantine measures now in effect and (b) to give assurances against the invasion of Cuba.\" The letter was also released directly to the press to ensure it could not be \"delayed\". With the letter delivered, a deal was on the table. As Robert Kennedy noted, there was little expectation it would be accepted. At 9:00 pm EDT, the EXCOMM met again to review the actions for the following day. Plans were drawn up for air strikes on the missile sites as well as other economic targets, notably petroleum storage. McNamara stated that they had to \"have two things ready: a government for Cuba, because we're going to need one; and secondly, plans for how to respond to the Soviet Union in Europe, because sure as hell they're going to do something there\".", "title": "Secret negotiations" }, { "paragraph_id": 100, "text": "At 12:12 am EDT, on 27 October, the US informed its NATO allies that \"the situation is growing shorter.... the United States may find it necessary within a very short time in its interest and that of its fellow nations in the Western Hemisphere to take whatever military action may be necessary.\" To add to the concern, at 6:00 am, the CIA reported that all missiles in Cuba were ready for action.", "title": "Secret negotiations" }, { "paragraph_id": 101, "text": "On 27 October, Khrushchev also received a letter from Castro, what is now known as the Armageddon Letter (dated the day before), which was interpreted as urging the use of nuclear force in the event of an attack on Cuba: \"I believe the imperialists' aggressiveness is extremely dangerous and if they actually carry out the brutal act of invading Cuba in violation of international law and morality, that would be the moment to eliminate such danger forever through an act of clear legitimate defense, however harsh and terrible the solution would be,\" Castro wrote.", "title": "Secret negotiations" }, { "paragraph_id": 102, "text": "Later that same day, what the White House later called \"Black Saturday\", the US Navy dropped a series of \"signalling\" depth charges (practice depth charges the size of hand grenades) on a Soviet submarine (B-59) at the blockade line, unaware that it was armed with a nuclear-tipped torpedo with orders that allowed it to be used if the submarine was damaged by depth charges or surface fire. As the submarine was too deep to monitor any radio traffic, the captain of the B-59, Valentin Grigoryevich Savitsky, decided that a war might already have started and wanted to launch a nuclear torpedo. The decision to launch these normally only required agreement from the two commanding officers on board, the Captain and the Political Officer. However, the commander of the submarine Flotilla, Vasily Arkhipov, was aboard B-59 and so he also had to agree. Arkhipov objected and so the nuclear launch was narrowly averted.", "title": "Secret negotiations" }, { "paragraph_id": 103, "text": "On the same day a U-2 spy plane made an accidental, unauthorised ninety-minute overflight of the Soviet Union's far eastern coast. The Soviets responded by scrambling MiG fighters from Wrangel Island; in turn, the Americans launched F-102 fighters armed with nuclear air-to-air missiles over the Bering Sea.", "title": "Secret negotiations" }, { "paragraph_id": 104, "text": "On Saturday, 27 October, after much deliberation between the Soviet Union and Kennedy's cabinet, Kennedy secretly agreed to remove all missiles set in Turkey and possibly southern Italy, the former on the border of the Soviet Union, in exchange for Khrushchev removing all missiles in Cuba. There is some dispute as to whether removing the missiles from Italy was part of the secret agreement. Khrushchev wrote in his memoirs that it was, and when the crisis had ended McNamara gave the order to dismantle the missiles in both Italy and Turkey.", "title": "Resolution" }, { "paragraph_id": 105, "text": "At this point, Khrushchev knew things the US did not. First, that the shooting down of the U-2 by a Soviet missile violated direct orders from Moscow, and Cuban anti-aircraft fire against other US reconnaissance aircraft also violated direct orders from Khrushchev to Castro. Second, the Soviets already had 162 nuclear warheads on Cuba that the US did not then believe were there. Third, the Soviets and Cubans on the island would almost certainly have responded to an invasion by using those nuclear weapons, even though Castro believed that every human in Cuba would likely die as a result. Khrushchev also knew but may not have considered the fact that he had submarines armed with nuclear weapons that the US Navy may not have known about.", "title": "Resolution" }, { "paragraph_id": 106, "text": "Khrushchev knew he was losing control. President Kennedy had been told in early 1961 that a nuclear war would likely kill a third of humanity, with most or all of those deaths concentrated in the US, the USSR, Europe and China; Khrushchev may well have received similar reports from his military.", "title": "Resolution" }, { "paragraph_id": 107, "text": "With this background, when Khrushchev heard Kennedy's threats relayed by Robert Kennedy to Soviet Ambassador Dobrynin, he immediately drafted his acceptance of Kennedy's latest terms from his dacha without involving the Politburo, as he had previously, and had them immediately broadcast over Radio Moscow, which he believed the US would hear. In that broadcast at 9:00 am EST, on 28 October, Khrushchev stated that \"the Soviet government, in addition to previously issued instructions on the cessation of further work at the building sites for the weapons, has issued a new order on the dismantling of the weapons which you describe as 'offensive' and their crating and return to the Soviet Union.\" At 10:00 am on 28 October, Kennedy first learned of Khrushchev's solution to the crisis with the US removing the 15 Jupiters in Turkey and the Soviets would remove the rockets from Cuba. Khrushchev had made the offer in a public statement for the world to hear. Despite almost solid opposition from his senior advisers, Kennedy quickly embraced the Soviet offer. \"This is a pretty good play of his,\" Kennedy said, according to a tape recording that he made secretly of the Cabinet Room meeting. Kennedy had deployed the Jupiters in March 1962, causing a stream of angry outbursts from Khrushchev. \"Most people will think this is a rather even trade and we ought to take advantage of it,\" Kennedy said. Vice President Lyndon Johnson was the first to endorse the missile swap but others continued to oppose the offer. Finally, Kennedy ended the debate. \"We can't very well invade Cuba with all its toil and blood,\" Kennedy said, \"when we could have gotten them out by making a deal on the same missiles on Turkey. If that's part of the record, then you don't have a very good war.\"", "title": "Resolution" }, { "paragraph_id": 108, "text": "Kennedy immediately responded to Khrushchev's letter, issuing a statement calling it \"an important and constructive contribution to peace\". He continued this with a formal letter:", "title": "Resolution" }, { "paragraph_id": 109, "text": "I consider my letter to you of October twenty-seventh and your reply of today as firm undertakings on the part of both our governments which should be promptly carried out.... The US will make a statement in the framework of the Security Council in reference to Cuba as follows: it will declare that the United States of America will respect the inviolability of Cuban borders, its sovereignty, that it take the pledge not to interfere in internal affairs, not to intrude themselves and not to permit our territory to be used as a bridgehead for the invasion of Cuba, and will restrain those who would plan to carry an aggression against Cuba, either from US territory or from the territory of other countries neighboring to Cuba.", "title": "Resolution" }, { "paragraph_id": 110, "text": "Kennedy's planned statement would also contain suggestions he had received from his adviser Schlesinger Jr. in a \"Memorandum for the President\" describing the \"Post Mortem on Cuba\".", "title": "Resolution" }, { "paragraph_id": 111, "text": "On 28 October, Kennedy participated in telephone conversations with Eisenhower and fellow former US President Harry Truman. In these calls, Kennedy revealed that he thought the crisis would result in the two superpowers being \"toe to toe\" in Berlin by the end of the following month and expressed concern that the Soviet setback in Cuba would \"make things tougher\" there. He also informed his predecessors that he had rejected the public Soviet offer to withdraw from Cuba in exchange for the withdrawal of US missiles from Turkey.", "title": "Resolution" }, { "paragraph_id": 112, "text": "The US continued the blockade; in the following days, aerial reconnaissance proved that the Soviets were making progress in removing the missile systems. The 42 missiles and their support equipment were loaded onto eight Soviet ships. On 2 November 1962, Kennedy addressed the US via radio and television broadcasts regarding the dismantlement process of the Soviet R-12 missile bases located in the Caribbean region. The ships left Cuba on November 5 to 9. The US made a final visual check as each of the ships passed the blockade line. Further diplomatic efforts were required to remove the Soviet Il-28 bombers, and they were loaded on three Soviet ships on 5 and 6 December. Concurrent with the Soviet commitment on the Il-28s, the US government announced the end of the blockade from 6:45 pm EST on 20 November 1962.", "title": "Resolution" }, { "paragraph_id": 113, "text": "At the time when the Kennedy administration thought that the Cuban Missile Crisis was resolved, nuclear tactical rockets stayed in Cuba since they were not part of the Kennedy-Khrushchev understandings and the Americans did not know about them. The Soviets changed their minds, fearing possible future Cuban militant steps, and on 22 November 1962, Deputy Premier of the Soviet Union Anastas Mikoyan told Castro that the rockets with the nuclear warheads were being removed as well.", "title": "Resolution" }, { "paragraph_id": 114, "text": "The Cuban Missile Crises was solved in part by a secret agreement by John F. Kennedy and Nikita Khrushchev. The Kennedy-Khrushchev Pact was known only by 9 U.S. officials at the time of its creation in October 1963 and was the first time officially acknowledged at a conference in Moscow in January 1989 by Soviet Ambassador Dobrynin and Kennedy's speechwriter Theodore Sorensen. In his negotiations with the Soviet Ambassador Anatoly Dobrynin, Robert Kennedy informally proposed that the Jupiter missiles in Turkey would be removed \"within a short time after this crisis was over\". Under an operation code-named Operation Pot Pie, the removal of the Jupiters from Italy and Turkey began on 1 April, and was completed by 24 April 1963. The initial plans were to recycle the missiles for use in other programs, but NASA and the USAF were not interested in retaining the missile hardware. The missile bodies were destroyed on site, warheads, guidance packages, and launching equipment worth $14 million were returned to the United States. The dismantling operations were named Pot Pie I for Italy and Pot Pie II for Turkey by the United States Air Forces.", "title": "Resolution" }, { "paragraph_id": 115, "text": "The practical effect of the Kennedy-Khrushchev Pact was that the US would remove their rockets from Italy and Turkey and that the Soviets had no intention of resorting to nuclear war if they were out-gunned by the US. Because the withdrawal of the Jupiter missiles from NATO bases in Italy and Turkey was not made public at the time, Khrushchev appeared to have lost the conflict and become weakened. The perception was that Kennedy had won the contest between the superpowers and that Khrushchev had been humiliated. Both Kennedy and Khrushchev took every step to avoid full conflict despite pressures from their respective governments. Khrushchev held power for another two years. As a direct result to the crisis, the United States and the Soviet Union set up a direct line of communication. The hot line between the Soviet Union and the United States was a way for the President and Premier to have negotiations should a crisis like this ever happen again.", "title": "Resolution" }, { "paragraph_id": 116, "text": "By the time of the crisis in October 1962, the total number of nuclear weapons in the stockpiles of each country numbered approximately 26,400 for the United States and 3,300 for the Soviet Union. For the US, around 3,500 (with a combined yield of approximately 6,300 megatons) would have been used in attacking the Soviet Union. The Soviets had considerably less strategic firepower at their disposal: some 300–320 bombs and warheads, without submarine-based weapons in a position to threaten the US mainland and most of their intercontinental delivery systems based on bombers that would have difficulty penetrating North American air defence systems. However, they had already moved 158 warheads to Cuba; between 95 and 100 would have been ready for use if the US had invaded Cuba, most of which were short-ranged. The US had approximately 4,375 nuclear weapons deployed in Europe, most of which were tactical weapons such as nuclear artillery, with around 450 of them for ballistic missiles, cruise missiles, and aircraft; the Soviets had more than 550 similar weapons in Europe.", "title": "Nuclear forces" }, { "paragraph_id": 117, "text": "Cuba perceived the outcome as a betrayal by the Soviets, as decisions on how to resolve the crisis had been made exclusively by Kennedy and Khrushchev. Castro was especially upset that certain issues of interest to Cuba, such as the status of the US Naval Base in Guantánamo, were not addressed. That caused Cuban–Soviet relations to deteriorate for years to come.", "title": "Aftermath" }, { "paragraph_id": 118, "text": "Historian Arthur Schlesinger believed that when the missiles were withdrawn, Castro was more angry with Khrushchev than with Kennedy because Khrushchev had not consulted Castro before deciding to remove them. Although Castro was infuriated by Khrushchev, he planned on striking the US with the remaining missiles if an invasion of the island occurred.", "title": "Aftermath" }, { "paragraph_id": 119, "text": "A few weeks after the crisis, during an interview with the British communist newspaper the Daily Worker, Guevara was still fuming over the perceived Soviet betrayal and told correspondent Sam Russell that, if the missiles had been under Cuban control, they would have fired them off. While expounding on the incident later, Guevara reiterated that the cause of socialist liberation against global \"imperialist aggression\" would ultimately have been worth the possibility of \"millions of atomic war victims\". The missile crisis further convinced Guevara that the world's two superpowers (the United States and the Soviet Union) used Cuba as a pawn in their own global strategies. Afterward, he denounced the Soviets almost as frequently as he denounced the Americans.", "title": "Aftermath" }, { "paragraph_id": 120, "text": "During the crisis, Gheorghe Gheorghiu-Dej, general secretary of Romania's communist party, sent a letter to President Kennedy dissociating Romania from Soviet actions. This convinced the American administration of Bucharest's intentions of detaching itself from Moscow.", "title": "Aftermath" }, { "paragraph_id": 121, "text": "The significance of how close the world came to thermonuclear war impelled Khrushchev to propose a far-reaching easing of tensions with the US. In a letter to President Kennedy dated 30 October 1962, Khrushchev outlined a range of bold initiatives to forestall the possibility of a further nuclear crisis, including proposing a non-aggression treaty between the North Atlantic Treaty Organization (NATO) and the Warsaw Pact or even disbanding these military blocs, a treaty to cease all nuclear weapons testing and even the elimination of all nuclear weapons, resolution of the hot-button issue of Germany by both East and West formally accepting the existence of West Germany and East Germany, and US recognition of the government of mainland China. The letter invited counter-proposals and further exploration of these and other issues through peaceful negotiations. Khrushchev invited Norman Cousins, the editor of a major US periodical and an anti-nuclear weapons activist, to serve as liaison with President Kennedy, and Cousins met with Khrushchev for four hours in December 1962.", "title": "Aftermath" }, { "paragraph_id": 122, "text": "Kennedy's response to Khrushchev's proposals was lukewarm but Kennedy expressed to Cousins that he felt constrained in exploring these issues due to pressure from hardliners in the US national security apparatus. The United States and the Soviet Union did shortly thereafter agree on a treaty banning atmospheric testing of nuclear weapons, known as the \"Partial Nuclear Test Ban Treaty\".", "title": "Aftermath" }, { "paragraph_id": 123, "text": "Further after the crisis, the US and the USSR created the Moscow–Washington hotline, a direct communications link between Moscow and Washington. The purpose was to have a way that the leaders of the two Cold War countries could communicate directly to solve such a crisis.", "title": "Aftermath" }, { "paragraph_id": 124, "text": "The compromise embarrassed Khrushchev and the Soviet Union because the withdrawal of US missiles from Italy and Turkey was a secret deal between Kennedy and Khrushchev. Khrushchev went to Kennedy as he thought that the crisis was getting out of hand, but the Soviets were seen as retreating from circumstances that they had started.", "title": "Aftermath" }, { "paragraph_id": 125, "text": "Khrushchev's fall from power two years later was in part because of the Soviet Politburo's embarrassment at both Khrushchev's eventual concessions to the US and this ineptitude in precipitating the crisis in the first place. According to Dobrynin, the top Soviet leadership took the Cuban outcome as \"a blow to its prestige bordering on humiliation\".", "title": "Aftermath" }, { "paragraph_id": 126, "text": "The worldwide US Forces DEFCON 3 status was returned to DEFCON 4 on 20 November 1962. General Curtis LeMay told the President that the resolution of the crisis was the \"greatest defeat in our history\"; his was a minority position. He had pressed for an immediate invasion of Cuba as soon as the crisis began and still favored invading Cuba even after the Soviets had withdrawn their missiles. Twenty-five years later, LeMay still believed that \"We could have gotten not only the missiles out of Cuba, we could have gotten the Communists out of Cuba at that time.\"", "title": "Aftermath" }, { "paragraph_id": 127, "text": "By 1962, President Kennedy had faced four crisis situations: the failure of the Bay of Pigs Invasion, settlement negotiations between the pro-Western government of Laos and the Pathet Lao communist movement (\"Kennedy sidestepped Laos, whose rugged terrain was no battleground for American soldiers.\"), the construction of the Berlin Wall, and the Cuban Missile Crisis. Kennedy believed that yet another failure to gain control and stop communist expansion would irreparably damage US credibility. He was determined to \"draw a line in the sand\" and prevent a communist victory in Vietnam. He told James Reston of The New York Times immediately after his Vienna summit meeting with Khrushchev, \"Now we have a problem making our power credible and Vietnam looks like the place.\" As Kennedy would be assassinated on 22 November 1963 during as visit to Texas, vice president Lyndon B. Johnson assumed the presidency on the same day to which he would remain until January 1969 when succeed by Richard Nixon.", "title": "Aftermath" }, { "paragraph_id": 128, "text": "At least four contingency strikes were armed and launched from Florida against Cuban airfields and suspected missile sites in 1963 and 1964, although all were diverted to the Pinecastle Range Complex after the planes passed Andros island. Critics, including Seymour Melman and Seymour Hersh, suggested that the Cuban Missile Crisis encouraged the United States' use of military means, such as the case in the later Vietnam War. Similarly, Lorraine Bayard de Volo has suggested that the masculine brinksmanship of the Cuban Missile Crisis has become a 'touchstone of toughness by which presidents are measured'. Actions in 1962 would go on to have a significant influence on the future policy decisions of those who occupied the White House, leading to foreign policy decisions such as President Lyndon B. Johnson's escalation of the war in Vietnam three years following the crisis.", "title": "Aftermath" }, { "paragraph_id": 129, "text": "U-2 pilot Anderson's body was returned to the US and was buried with full military honours in South Carolina. He was the first recipient of the newly created Air Force Cross, which was awarded posthumously. Although Anderson was the only combatant fatality during the crisis, 11 crew members of three reconnaissance Boeing RB-47 Stratojets of the 55th Strategic Reconnaissance Wing were also killed in crashes during the period between 27 September and 11 November 1962. Seven crew died when a Military Air Transport Service Boeing C-135B Stratolifter delivering ammunition to Guantanamo Bay Naval Base stalled and crashed on approach on 23 October.", "title": "Aftermath" }, { "paragraph_id": 130, "text": "Arguably, the most dangerous moment in the crisis was not recognized until the Cuban Missile Crisis Havana conference, in October 2002. Attended by many of the veterans of the crisis, they all learned that on 27 October 1962, USS Beale had tracked and dropped signalling depth charges (the size of hand grenades) on B-59, a Soviet Project 641 (NATO designation Foxtrot) submarine. Unknown to the US, it was armed with a 15-kiloton nuclear torpedo. Running out of air, the Soviet submarine was surrounded by American warships and desperately needed to surface. An argument broke out among three officers aboard B-59, including submarine captain Valentin Savitsky, political officer Ivan Semyonovich Maslennikov, and Deputy brigade commander Captain 2nd rank (US Navy Commander rank equivalent) Vasily Arkhipov. An exhausted Savitsky became furious and ordered that the nuclear torpedo on board be made combat ready. Accounts differ about whether Arkhipov convinced Savitsky not to make the attack or whether Savitsky himself finally concluded that the only reasonable choice left open to him was to come to the surface. During the conference, McNamara stated that nuclear war had come much closer than people had thought. Thomas Blanton, director of the National Security Archive, said, \"A guy called Vasily Arkhipov saved the world.\"", "title": "Later revelations" }, { "paragraph_id": 131, "text": "In early 1992, it was confirmed that Soviet forces in Cuba had already received tactical nuclear warheads for their artillery rockets and Il-28 bombers when the crisis broke. Castro stated that he would have recommended their use if the US invaded despite Cuba being destroyed.", "title": "Later revelations" }, { "paragraph_id": 132, "text": "Fifty years after the crisis, Graham Allison wrote:", "title": "Later revelations" }, { "paragraph_id": 133, "text": "Fifty years ago, the Cuban missile crisis brought the world to the brink of nuclear disaster. During the standoff, US President John F. Kennedy thought the chance of escalation to war was \"between 1 in 3 and even\", and what we have learned in later decades has done nothing to lengthen those odds. We now know, for example, that in addition to nuclear-armed ballistic missiles, the Soviet Union had deployed 100 tactical nuclear weapons to Cuba, and the local Soviet commander there could have launched these weapons without additional codes or commands from Moscow. The US air strike and invasion that were scheduled for the third week of the confrontation would likely have triggered a nuclear response against American ships and troops, and perhaps even Miami. The resulting war might have led to the deaths of over 100 million Americans and over 100 million Russians.", "title": "Later revelations" }, { "paragraph_id": 134, "text": "BBC journalist Joe Matthews published the story, on 13 October 2012, behind the 100 tactical nuclear warheads mentioned by Graham Allison in the excerpt above. Khrushchev feared that Castro's hurt pride and widespread Cuban indignation over the concessions he had made to Kennedy might lead to a breakdown of the agreement between the Soviet Union and the United States. To prevent that, Khrushchev decided to offer to give Cuba more than 100 tactical nuclear weapons that had been shipped to Cuba along with the long-range missiles but, crucially, had escaped the notice of US intelligence. Khrushchev determined that because the Americans had not listed the missiles on their list of demands, keeping them in Cuba would be in the Soviet Union's interests.", "title": "Later revelations" }, { "paragraph_id": 135, "text": "Anastas Mikoyan was tasked with the negotiations with Castro over the missile transfer deal that was designed to prevent a breakdown in the relations between Cuba and the Soviet Union. While in Havana, Mikoyan witnessed the mood swings and paranoia of Castro, who was convinced that Moscow had made the agreement with the US at the expense of Cuba's defence. Mikoyan, on his own initiative, decided that Castro and his military should not be given control of weapons with an explosive force equal to 100 Hiroshima-sized bombs under any circumstances. He defused the seemingly intractable situation, which risked re-escalating the crisis, on 22 November 1962. During a tense, four-hour meeting, Mikoyan convinced Castro that despite Moscow's desire to help, it would be in breach of an unpublished Soviet law, which did not actually exist, to transfer the missiles permanently into Cuban hands and provide them with an independent nuclear deterrent. Castro was forced to give way and, much to the relief of Khrushchev and the rest of the Soviet government, the tactical nuclear weapons were crated and returned by sea to the Soviet Union during December 1962.", "title": "Later revelations" }, { "paragraph_id": 136, "text": "The American popular media, especially television, made frequent use of the events of the missile crisis in both fictional and documentary forms. Jim Willis includes the Crisis as one of the 100 \"media moments that changed America\". Sheldon Stern finds that a half century later there are still many \"misconceptions, half-truths, and outright lies\" that have shaped media versions of what happened in the White House during those harrowing two weeks.", "title": "In popular culture" }, { "paragraph_id": 137, "text": "Historian William Cohn argued in a 1976 article that television programs are typically the main source used by the American public to know about and interpret the past. According to Cold War historian Andrei Kozovoi, the Soviet media proved somewhat disorganized as it was unable to generate a coherent popular history. Khrushchev lost power and was airbrushed out of the story. Cuba was no longer portrayed as a heroic David against the American Goliath. One contradiction that pervaded the Soviet media campaign was between the pacifistic rhetoric of the peace movement that emphasizes the horrors of nuclear war and the militancy of the need to prepare Soviets for war against American aggression.", "title": "In popular culture" } ]	The Cuban Missile Crisis, in Russian known as the Caribbean Crisis and in Cuba as the October Crisis, was a 13-day confrontation between the United States and the Soviet Union, when American deployments of nuclear missiles in Italy and Turkey were matched by Soviet deployments of nuclear missiles in Cuba. The crisis lasted from 16 to 28 October 1962. The confrontation is widely considered the closest the Cold War came to escalating into full-scale nuclear war. In 1961, the US government put Jupiter nuclear missiles in Italy and Turkey. It had also trained a paramilitary force of Cuban exiles, which the CIA led in an attempt to invade Cuba and overthrow its government. Starting in November of that year, the US government engaged in a violent campaign of terrorism and sabotage in Cuba, referred to as the Cuban Project, which continued throughout the first half of the 1960s. The Soviet administration was concerned about a Cuban drift towards China, with which the Soviets had an increasingly fractious relationship. In response to these factors, Soviet First Secretary, Nikita Khrushchev, agreed with the Cuban Prime Minister, Fidel Castro, to place nuclear missiles on the island of Cuba to deter a future invasion. An agreement was reached during a secret meeting between Khrushchev and Castro in July 1962, and construction of a number of missile launch facilities started later that summer. During the campaigning for the 1962 United States elections, the White House denied the charges for months and ignored the presence of Soviet missiles positioned approximately 90 mi (140 km) away from Florida. Later, the missile preparations were confirmed when a US Air Force U-2 spy plane produced clear photographic evidence of medium-range R-12 and intermediate-range R-14 ballistic missile facilities. When this was reported to President John F. Kennedy, he then convened a meeting of the nine members of the National Security Council and five other key advisers, in a group that became known as the Executive Committee of the National Security Council (EXCOMM). During this meeting, President Kennedy was originally advised to carry out an air strike on Cuban soil in order to compromise Soviet missile supplies, followed by an invasion of the Cuban mainland. After careful consideration, President Kennedy chose a less aggressive course of action, in order to avoid a declaration of war. After consultation with EXCOMM, Kennedy ordered a naval "quarantine" on 22 October to prevent further missiles from reaching Cuba. By using the term "quarantine", rather than "blockade", the United States was able to avoid the implications of a state of war. The US announced it would not permit offensive weapons to be delivered to Cuba and demanded that the weapons already in Cuba be dismantled and returned to the Soviet Union. After several days of tense negotiations, an agreement was reached between Kennedy and Khrushchev: publicly, the Soviets would dismantle their offensive weapons in Cuba and return them to the Soviet Union, subject to United Nations verification, in exchange for a US public declaration and agreement to not invade Cuba again. Secretly, the United States agreed with the Soviets that it would dismantle all of the Jupiter MRBMs which had been deployed to Turkey against the Soviet Union. There has been debate on whether Italy was included in the agreement as well. While the Soviets dismantled their missiles, some Soviet bombers remained in Cuba, and the United States kept the naval quarantine in place until 20 November 1962. When all offensive missiles and the Ilyushin Il-28 light bombers had been withdrawn from Cuba, the blockade was formally ended on 20 November. The negotiations between the United States and the Soviet Union pointed out the necessity of a quick, clear, and direct communication line between the two superpowers. As a result, the Moscow–Washington hotline was established. A series of agreements later reduced US–Soviet tensions for several years, until both parties eventually resumed expanding their nuclear arsenals. The compromise embarrassed Khrushchev and the Soviet Union because the withdrawal of US missiles from Italy and Turkey was a secret deal between Kennedy and Khrushchev, and the Soviets were seen as retreating from circumstances that they had started. Khrushchev's fall from power two years later was in part because of the Soviet Politburo's embarrassment at both Khrushchev's eventual concessions to the US and his ineptitude in precipitating the crisis in the first place. According to Dobrynin, the top Soviet leadership took the Cuban outcome as "a blow to its prestige bordering on humiliation".	2001-10-17T20:46:02Z	2023-12-29T13:40:35Z	[ "Template:Harvnb", "Template:Cite web", "Template:Citation", "Template:Reflist", "Template:Wikiquote", "Template:Rp", "Template:Convert", "Template:EngvarB", "Template:Commons category", "Template:Cite report", "Template:Library resources box", "Template:Cuban conflicts", "Template:'", "Template:Portal", "Template:Flickr-inline2", "Template:John F. Kennedy", "Template:United States intervention in Latin America", "Template:US history", "Template:Authority control", "Template:Clarify", "Template:Sclass2", "Template:More citations needed", "Template:Page needed", "Template:Cite journal", "Template:Pp-pc", "Template:Expand Russian", "Template:Citation needed", "Template:Wikisource", "Template:USS", "Template:Cite book", "Template:Cvt", "Template:Listen", "Template:Lang-es", "Template:Cite encyclopedia", "Template:Unreliable source?", "Template:Robert F. Kennedy", "Template:Refn", "Template:ISBN", "Template:Internet Archive short film", "Template:NYTtopic", "Template:Cuba-United States relations", "Template:Nbsp", "Template:Main", "Template:Dead link", "Template:Cold War", "Template:Further", "Template:Ship", "Template:Lang", "Template:See also", "Template:R", "Template:Failed verification", "Template:Webarchive", "Template:Use dmy dates", "Template:Use American English", "Template:Infobox military conflict", "Template:Sclass", "Template:Quote box", "Template:Cite news", "Template:Fidel Castro", "Template:Short description", "Template:Redirect", "Template:Blockquote" ]	https://en.wikipedia.org/wiki/Cuban_Missile_Crisis
6,828	Aquilegia	Aquilegia (common names: granny's bonnet, columbine) is a genus of about 60–70 species of perennial plants that are found in meadows, woodlands, and at higher altitudes throughout the Northern Hemisphere, known for the spurred petals of their flowers. The genus name Aquilegia comes from the Latin “Aquila”, or “eagle”; this is in obvious reference to the spurred, “hook” shapes within the blooms, that many gardeners say resemble an eagle's talons. Perennial herbs, with woody, erect stock, roots forming thick rhizomes. The basal leaves are compound, 1–3 ternate, blades 3-lobed -partite, and lobes lobulate and obtuse. The cauline leaves are similar to the basal ones, while the upper ones are bract like. The hermaphrodite (bisexual) flowers are terminal to stem and branches. They are usually pentamerous (with five spreading perianth petaloid sepal segments). Five tubular honey-leaves are semi erect with a flat limb and spurred or saccate at the base. The spur is directed backwards and secretes nectar. Stamens are numerous (often more than 50) in whorls of 5, the innermost being scarious staminodes. There are ten membranaceous intrastaminal scales. There are five pistils and the Carpels are free. The fruit has several (five to 15) follicles which are semi erect and slightly connate downwards. These hold many seeds and are formed at the end of the pistils. The nectar is mainly consumed by long-beaked birds such as hummingbirds. Almost all Aquilegia species have a ring of staminodia around the base of the stigma, which may help protect against insects. Chromosome number is x=7. Columbines are closely related to plants in the genera Actaea (baneberries) and Aconitum (wolfsbanes/monkshoods), which like Aquilegia produce cardiogenic toxins. They are used as food plants by some Lepidoptera (butterfly and moth) caterpillars. These are mainly of noctuid moths – noted for feeding on many poisonous plants without harm – such as cabbage moth (Mamestra brassicae), dot moth (Melanchra persicariae) and mouse moth (Amphipyra tragopoginis). The engrailed (Ectropis crepuscularia), a geometer moth, also uses columbine as a larval food plant. The larvae of the Papaipema leucostigma also feed on columbine. Plants in the genus Aquilegia are a major food source for Bombus hortorum, a species of bumblebee. Specifically, they have been found to forage on species of Aquilegia vulgaris in Belgium and Aquilegia chrysantha in North America and Belgium. The bees do not show any preference in color of the flowers. Columbine is a hardy perennial, which propagates by seed. It will grow to a height of 40–50 cm (15–20 in). It will grow in full sun; however, it prefers growing in partial shade and well drained soil, and is able to tolerate average soils and dry soil conditions. Columbine is rated at hardiness zone 3 in the United States so does not require mulching or protection in the winter. Large numbers of hybrids are available for the garden, since the European A. vulgaris was hybridized with other European and North American varieties. Aquilegia species are very interfertile, and will self-sow. Some varieties are short-lived so are better treated as biennials. The British National Collection of Aquilegias was held by Mrs Carrie Thomas at Killay near Swansea. Some time during or before 2014 the collection started to succumb to Aquilegia Downy Mildew Peronospora aquilegiicola which was at the time an emerging disease to which the plants had no resistance. By 2018 the entire collection had been lost. Aquilegia can be grown from seeds or rhizomes. The flowers of various species of columbine were consumed in moderation by Native Americans as a condiment with other fresh greens, and are reported to be very sweet, and safe if consumed in small quantities. The plant's seeds and roots, however, are highly poisonous and contain cardiogenic toxins which cause both severe gastroenteritis and heart palpitations if consumed as food. Native Americans used very small amounts of Aquilegia root as a treatment for ulcers. However, the medical use of this plant is better avoided due to its high toxicity; columbine poisonings may be fatal. An acute toxicity test in mice has demonstrated that ethanol extract mixed with isocytisoside, the main flavonoid compound from the leaves and stems of Aquilegia vulgaris, can be classified as non-toxic, since a dose of 3000 mg/kg did not cause mortality. The Colorado blue columbine (A. coerulea) is the official state flower of Colorado (see also Columbine, Colorado). It is also used as a symbol of the former city of Scarborough in the Canadian province of Ontario. Columbines have been important in the study of evolution. It was found that the Sierra columbine (A. pubescens) and crimson columbine (A. formosa) each has adapted specifically to a pollinator. Bees and hummingbirds are the visitors to A. formosa, while hawkmoths would only visit A. pubescens when given a choice. Such a "pollination syndrome", being due to flower color and orientation controlled by their genetics, ensures reproductive isolation and can be a cause of speciation. Aquilegia petals show an enormous range of petal spur length diversity ranging from a centimeter to the 15 cm spurs of Aquilegia longissima. Selection from pollinator shifts is suggested to have driven these changes in nectar spur length. It was shown that this spur length diversity is achieved solely through changing cell shape, not cell number or cell size. This suggests that a simple microscopic change can result in a dramatic evolutionarily relevant morphological change. Columbine species include:	[ { "paragraph_id": 0, "text": "Aquilegia (common names: granny's bonnet, columbine) is a genus of about 60–70 species of perennial plants that are found in meadows, woodlands, and at higher altitudes throughout the Northern Hemisphere, known for the spurred petals of their flowers.", "title": "" }, { "paragraph_id": 1, "text": "The genus name Aquilegia comes from the Latin “Aquila”, or “eagle”; this is in obvious reference to the spurred, “hook” shapes within the blooms, that many gardeners say resemble an eagle's talons.", "title": "Etymology" }, { "paragraph_id": 2, "text": "Perennial herbs, with woody, erect stock, roots forming thick rhizomes. The basal leaves are compound, 1–3 ternate, blades 3-lobed -partite, and lobes lobulate and obtuse. The cauline leaves are similar to the basal ones, while the upper ones are bract like.", "title": "Description" }, { "paragraph_id": 3, "text": "The hermaphrodite (bisexual) flowers are terminal to stem and branches. They are usually pentamerous (with five spreading perianth petaloid sepal segments). Five tubular honey-leaves are semi erect with a flat limb and spurred or saccate at the base. The spur is directed backwards and secretes nectar. Stamens are numerous (often more than 50) in whorls of 5, the innermost being scarious staminodes. There are ten membranaceous intrastaminal scales. There are five pistils and the Carpels are free.", "title": "Description" }, { "paragraph_id": 4, "text": "The fruit has several (five to 15) follicles which are semi erect and slightly connate downwards. These hold many seeds and are formed at the end of the pistils. The nectar is mainly consumed by long-beaked birds such as hummingbirds. Almost all Aquilegia species have a ring of staminodia around the base of the stigma, which may help protect against insects. Chromosome number is x=7.", "title": "Description" }, { "paragraph_id": 5, "text": "Columbines are closely related to plants in the genera Actaea (baneberries) and Aconitum (wolfsbanes/monkshoods), which like Aquilegia produce cardiogenic toxins.", "title": "Relatives" }, { "paragraph_id": 6, "text": "They are used as food plants by some Lepidoptera (butterfly and moth) caterpillars. These are mainly of noctuid moths – noted for feeding on many poisonous plants without harm – such as cabbage moth (Mamestra brassicae), dot moth (Melanchra persicariae) and mouse moth (Amphipyra tragopoginis). The engrailed (Ectropis crepuscularia), a geometer moth, also uses columbine as a larval food plant. The larvae of the Papaipema leucostigma also feed on columbine.", "title": "Insects" }, { "paragraph_id": 7, "text": "Plants in the genus Aquilegia are a major food source for Bombus hortorum, a species of bumblebee. Specifically, they have been found to forage on species of Aquilegia vulgaris in Belgium and Aquilegia chrysantha in North America and Belgium. The bees do not show any preference in color of the flowers.", "title": "Insects" }, { "paragraph_id": 8, "text": "Columbine is a hardy perennial, which propagates by seed. It will grow to a height of 40–50 cm (15–20 in). It will grow in full sun; however, it prefers growing in partial shade and well drained soil, and is able to tolerate average soils and dry soil conditions. Columbine is rated at hardiness zone 3 in the United States so does not require mulching or protection in the winter.", "title": "Cultivation" }, { "paragraph_id": 9, "text": "Large numbers of hybrids are available for the garden, since the European A. vulgaris was hybridized with other European and North American varieties. Aquilegia species are very interfertile, and will self-sow. Some varieties are short-lived so are better treated as biennials.", "title": "Cultivation" }, { "paragraph_id": 10, "text": "The British National Collection of Aquilegias was held by Mrs Carrie Thomas at Killay near Swansea. Some time during or before 2014 the collection started to succumb to Aquilegia Downy Mildew Peronospora aquilegiicola which was at the time an emerging disease to which the plants had no resistance. By 2018 the entire collection had been lost. Aquilegia can be grown from seeds or rhizomes.", "title": "Cultivation" }, { "paragraph_id": 11, "text": "The flowers of various species of columbine were consumed in moderation by Native Americans as a condiment with other fresh greens, and are reported to be very sweet, and safe if consumed in small quantities. The plant's seeds and roots, however, are highly poisonous and contain cardiogenic toxins which cause both severe gastroenteritis and heart palpitations if consumed as food. Native Americans used very small amounts of Aquilegia root as a treatment for ulcers. However, the medical use of this plant is better avoided due to its high toxicity; columbine poisonings may be fatal.", "title": "Uses" }, { "paragraph_id": 12, "text": "An acute toxicity test in mice has demonstrated that ethanol extract mixed with isocytisoside, the main flavonoid compound from the leaves and stems of Aquilegia vulgaris, can be classified as non-toxic, since a dose of 3000 mg/kg did not cause mortality.", "title": "Uses" }, { "paragraph_id": 13, "text": "The Colorado blue columbine (A. coerulea) is the official state flower of Colorado (see also Columbine, Colorado). It is also used as a symbol of the former city of Scarborough in the Canadian province of Ontario.", "title": "Culture" }, { "paragraph_id": 14, "text": "Columbines have been important in the study of evolution. It was found that the Sierra columbine (A. pubescens) and crimson columbine (A. formosa) each has adapted specifically to a pollinator. Bees and hummingbirds are the visitors to A. formosa, while hawkmoths would only visit A. pubescens when given a choice. Such a \"pollination syndrome\", being due to flower color and orientation controlled by their genetics, ensures reproductive isolation and can be a cause of speciation.", "title": "Evolution" }, { "paragraph_id": 15, "text": "Aquilegia petals show an enormous range of petal spur length diversity ranging from a centimeter to the 15 cm spurs of Aquilegia longissima. Selection from pollinator shifts is suggested to have driven these changes in nectar spur length. It was shown that this spur length diversity is achieved solely through changing cell shape, not cell number or cell size. This suggests that a simple microscopic change can result in a dramatic evolutionarily relevant morphological change.", "title": "Evolution" }, { "paragraph_id": 16, "text": "Columbine species include:", "title": "Species" } ]	Aquilegia is a genus of about 60–70 species of perennial plants that are found in meadows, woodlands, and at higher altitudes throughout the Northern Hemisphere, known for the spurred petals of their flowers.	2001-11-15T04:34:15Z	2023-11-08T22:52:19Z	[ "Template:Automatic taxobox", "Template:Sfn", "Template:Notelist", "Template:Reflist", "Template:Cite journal", "Template:Refend", "Template:Italic title", "Template:Cite web", "Template:Refbegin", "Template:Taxonbar", "Template:Efn", "Template:Cvt", "Template:Cite book", "Template:ISBN", "Template:Commons category", "Template:EB1911 Poster", "Template:Short description", "Template:Other uses", "Template:Harvtxt" ]	https://en.wikipedia.org/wiki/Aquilegia
6,829	Cache (computing)	In computing, a cache (/kæʃ/ KASH) is a hardware or software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere. A cache hit occurs when the requested data can be found in a cache, while a cache miss occurs when it cannot. Cache hits are served by reading data from the cache, which is faster than recomputing a result or reading from a slower data store; thus, the more requests that can be served from the cache, the faster the system performs. To be cost-effective, caches must be relatively small. Nevertheless, caches are effective in many areas of computing because typical computer applications access data with a high degree of locality of reference. Such access patterns exhibit temporal locality, where data is requested that has been recently requested, and spatial locality, where data is requested that is stored near data that has already been requested. There is an inherent trade-off between size and speed (given that a larger resource implies greater physical distances) but also a tradeoff between expensive, premium technologies (such as SRAM) vs cheaper, easily mass-produced commodities (such as DRAM, flash, or hard disks). The buffering provided by a cache benefits one or both of latency and throughput (bandwidth): A larger resource incurs a significant latency for access – e.g. it can take hundreds of clock cycles for a modern 4 GHz processor to reach DRAM. This is mitigated by reading in large chunks, in the hope that subsequent reads will be from nearby locations. Prediction or explicit prefetching might also guess where future reads will come from and make requests ahead of time; if done optimally, the latency is bypassed altogether. The use of a cache also allows for higher throughput from the underlying resource, by assembling multiple fine grain transfers into larger, more efficient requests. In the case of DRAM circuits, this might be served by having a wider data bus. For example, consider a program accessing bytes in a 32-bit address space, but being served by a 128-bit off-chip data bus; individual uncached byte accesses would allow only 1/16th of the total bandwidth to be used, and 80% of the data movement would be memory addresses instead of data itself. Reading larger chunks reduces the fraction of bandwidth required for transmitting address information. Hardware implements cache as a block of memory for temporary storage of data likely to be used again. Central processing units (CPUs), solid-state drives (SSDs) and hard disk drives (HDDs) frequently include hardware-based cache, while web browsers and web servers commonly rely on software caching. A cache is made up of a pool of entries. Each entry has associated data, which is a copy of the same data in some backing store. Each entry also has a tag, which specifies the identity of the data in the backing store of which the entry is a copy. Tagging allows simultaneous cache-oriented algorithms to function in multilayered fashion without differential relay interference. When the cache client (a CPU, web browser, operating system) needs to access data presumed to exist in the backing store, it first checks the cache. If an entry can be found with a tag matching that of the desired data, the data in the entry is used instead. This situation is known as a cache hit. For example, a web browser program might check its local cache on disk to see if it has a local copy of the contents of a web page at a particular URL. In this example, the URL is the tag, and the content of the web page is the data. The percentage of accesses that result in cache hits is known as the hit rate or hit ratio of the cache. The alternative situation, when the cache is checked and found not to contain any entry with the desired tag, is known as a cache miss. This requires a more expensive access of data from the backing store. Once the requested data is retrieved, it is typically copied into the cache, ready for the next access. During a cache miss, some other previously existing cache entry is removed in order to make room for the newly retrieved data. The heuristic used to select the entry to replace is known as the replacement policy. One popular replacement policy, "least recently used" (LRU), replaces the oldest entry, the entry that was accessed less recently than any other entry. More efficient caching algorithms compute the use-hit frequency against the size of the stored contents, as well as the latencies and throughputs for both the cache and the backing store. This works well for larger amounts of data, longer latencies, and slower throughputs, such as that experienced with hard drives and networks, but is not efficient for use within a CPU cache. When a system writes data to cache, it must at some point write that data to the backing store as well. The timing of this write is controlled by what is known as the write policy. There are two basic writing approaches: A write-back cache is more complex to implement, since it needs to track which of its locations have been written over, and mark them as dirty for later writing to the backing store. The data in these locations are written back to the backing store only when they are evicted from the cache, an effect referred to as a lazy write. For this reason, a read miss in a write-back cache (which requires a block to be replaced by another) will often require two memory accesses to service: one to write the replaced data from the cache back to the store, and then one to retrieve the needed data. Other policies may also trigger data write-back. The client may make many changes to data in the cache, and then explicitly notify the cache to write back the data. Since no data is returned to the requester on write operations, a decision needs to be made on write misses, whether or not data would be loaded into the cache. This is defined by these two approaches: Both write-through and write-back policies can use either of these write-miss policies, but usually they are paired in this way: Entities other than the cache may change the data in the backing store, in which case the copy in the cache may become out-of-date or stale. Alternatively, when the client updates the data in the cache, copies of those data in other caches will become stale. Communication protocols between the cache managers which keep the data consistent are known as coherency protocols. On a cache read miss, caches with a demand paging policy read the minimum amount from the backing store. For example, demand-paging virtual memory reads one page of virtual memory (often 4 kBytes) from disk into the disk cache in RAM. For example, a typical CPU reads a single L2 cache line of 128 bytes from DRAM into the L2 cache, and a single L1 cache line of 64 bytes from the L2 cache into the L1 cache. Caches with a prefetch input queue or more general anticipatory paging policy go further—they not only read the data requested, but guess that the next chunk or two of data will soon be required, and so prefetch that data into the cache ahead of time. Anticipatory paging is especially helpful when the backing store has a long latency to read the first chunk and much shorter times to sequentially read the next few chunks, such as disk storage and DRAM. A few operating systems go further with a loader that always pre-loads the entire executable into RAM. A few caches go even further, not only pre-loading an entire file, but also starting to load other related files that may soon be requested, such as the page cache associated with a prefetcher or the web cache associated with link prefetching. Small memories on or close to the CPU can operate faster than the much larger main memory. Most CPUs since the 1980s have used one or more caches, sometimes in cascaded levels; modern high-end embedded, desktop and server microprocessors may have as many as six types of cache (between levels and functions). Some examples of caches with a specific function are the D-cache, I-cache and the translation lookaside buffer for the memory management unit (MMU). Earlier graphics processing units (GPUs) often had limited read-only texture caches, and introduced Morton order swizzled textures to improve 2D cache coherency. Cache misses would drastically affect performance, e.g. if mipmapping was not used. Caching was important to leverage 32-bit (and wider) transfers for texture data that was often as little as 4 bits per pixel, indexed in complex patterns by arbitrary UV coordinates and perspective transformations in inverse texture mapping. As GPUs advanced (especially with General Purpose GPU compute shaders) they have developed progressively larger and increasingly general caches, including instruction caches for shaders, exhibiting increasingly common functionality with CPU caches. For example, GT200 architecture GPUs did not feature an L2 cache, while the GTX 490 GPU has 768 KB of last-level cache, the GTX TITAN GPU has 1536 KB of last-level cache, and the GTX 980 GPU has 2048 KB of last-level cache. These caches have grown to handle synchronisation primitives between threads and atomic operations, and interface with a CPU-style MMU. Digital signal processors have similarly generalised over the years. Earlier designs used scratchpad memory fed by direct memory access, but modern DSPs such as Qualcomm Hexagon often include a very similar set of caches to a CPU (e.g. Modified Harvard architecture with shared L2, split L1 I-cache and D-cache). A memory management unit (MMU) that fetches page table entries from main memory has a specialized cache, used for recording the results of virtual address to physical address translations. This specialized cache is called a translation lookaside buffer (TLB). Information-centric networking (ICN) is an approach to evolve the Internet infrastructure away from a host-centric paradigm, based on perpetual connectivity and the end-to-end principle, to a network architecture in which the focal point is identified information (or content or data). Due to the inherent caching capability of the nodes in an ICN, it can be viewed as a loosely connected network of caches, which has unique requirements of caching policies. However, ubiquitous content caching introduces the challenge to content protection against unauthorized access, which requires extra care and solutions. Unlike proxy servers, in ICN the cache is a network-level solution. Therefore, it has rapidly changing cache states and higher request arrival rates; moreover, smaller cache sizes further impose a different kind of requirements on the content eviction policies. In particular, eviction policies for ICN should be fast and lightweight. Various cache replication and eviction schemes for different ICN architectures and applications have been proposed. The Time aware Least Recently Used (TLRU) is a variant of LRU designed for the situation where the stored contents in cache have a valid life time. The algorithm is suitable in network cache applications, such as ICN, content delivery networks (CDNs) and distributed networks in general. TLRU introduces a new term: TTU (Time to Use). TTU is a time stamp of a content/page which stipulates the usability time for the content based on the locality of the content and the content publisher announcement. Owing to this locality based time stamp, TTU provides more control to the local administrator to regulate in network storage. In the TLRU algorithm, when a piece of content arrives, a cache node calculates the local TTU value based on the TTU value assigned by the content publisher. The local TTU value is calculated by using a locally defined function. Once the local TTU value is calculated the replacement of content is performed on a subset of the total content stored in cache node. The TLRU ensures that less popular and small life content should be replaced with the incoming content. The Least Frequent Recently Used (LFRU) cache replacement scheme combines the benefits of LFU and LRU schemes. LFRU is suitable for 'in network' cache applications, such as ICN, CDNs and distributed networks in general. In LFRU, the cache is divided into two partitions called privileged and unprivileged partitions. The privileged partition can be defined as a protected partition. If content is highly popular, it is pushed into the privileged partition. Replacement of the privileged partition is done as follows: LFRU evicts content from the unprivileged partition, pushes content from privileged partition to unprivileged partition, and finally inserts new content into the privileged partition. In the above procedure the LRU is used for the privileged partition and an approximated LFU (ALFU) scheme is used for the unprivileged partition, hence the abbreviation LFRU. The basic idea is to filter out the locally popular contents with ALFU scheme and push the popular contents to one of the privileged partition. In 2011, the use of smartphones with weather forecasting options was overly taxing AccuWeather servers; two requests within the same park would generate separate requests. An optimization by edge-servers to truncate the GPS coordinates to fewer decimal places meant that the cached results from the earlier query would be used. The number of to-the-server lookups per day dropped by half. While CPU caches are generally managed entirely by hardware, a variety of software manages other caches. The page cache in main memory, which is an example of disk cache, is managed by the operating system kernel. While the disk buffer, which is an integrated part of the hard disk drive or solid state drive, is sometimes misleadingly referred to as "disk cache", its main functions are write sequencing and read prefetching. Repeated cache hits are relatively rare, due to the small size of the buffer in comparison to the drive's capacity. However, high-end disk controllers often have their own on-board cache of the hard disk drive's data blocks. Finally, a fast local hard disk drive can also cache information held on even slower data storage devices, such as remote servers (web cache) or local tape drives or optical jukeboxes; such a scheme is the main concept of hierarchical storage management. Also, fast flash-based solid-state drives (SSDs) can be used as caches for slower rotational-media hard disk drives, working together as hybrid drives or solid-state hybrid drives (SSHDs). Web browsers and web proxy servers employ web caches to store previous responses from web servers, such as web pages and images. Web caches reduce the amount of information that needs to be transmitted across the network, as information previously stored in the cache can often be re-used. This reduces bandwidth and processing requirements of the web server, and helps to improve responsiveness for users of the web. Web browsers employ a built-in web cache, but some Internet service providers (ISPs) or organizations also use a caching proxy server, which is a web cache that is shared among all users of that network. Another form of cache is P2P caching, where the files most sought for by peer-to-peer applications are stored in an ISP cache to accelerate P2P transfers. Similarly, decentralised equivalents exist, which allow communities to perform the same task for P2P traffic, for example, Corelli. A cache can store data that is computed on demand rather than retrieved from a backing store. Memoization is an optimization technique that stores the results of resource-consuming function calls within a lookup table, allowing subsequent calls to reuse the stored results and avoid repeated computation. It is related to the dynamic programming algorithm design methodology, which can also be thought of as a means of caching. A content delivery network (CDN) is a network of distributed servers that deliver pages and other Web content to a user, based on the geographic locations of the user, the origin of the web page and the content delivery server. CDNs began in the late 1990s as a way to speed up the delivery of static content, such as HTML pages, images and videos. By replicating content on multiple servers around the world and delivering it to users based on their location, CDNs can significantly improve the speed and availability of a website or application. When a user requests a piece of content, the CDN will check to see if it has a copy of the content in its cache. If it does, the CDN will deliver the content to the user from the cache. A cloud storage gateway, also known as an edge filer, is a hybrid cloud storage device that connects a local network to one or more cloud storage services, typically object storage services such as Amazon S3. It provides a cache for frequently accessed data, providing high speed local access to frequently accessed data in the cloud storage service. Cloud storage gateways also provide additional benefits such as accessing cloud object storage through traditional file serving protocols as well as continued access to cached data during connectivity outages. The BIND DNS daemon caches a mapping of domain names to IP addresses, as does a resolver library. Write-through operation is common when operating over unreliable networks (like an Ethernet LAN), because of the enormous complexity of the coherency protocol required between multiple write-back caches when communication is unreliable. For instance, web page caches and client-side network file system caches (like those in NFS or SMB) are typically read-only or write-through specifically to keep the network protocol simple and reliable. Search engines also frequently make web pages they have indexed available from their cache. For example, Google provides a "Cached" link next to each search result. This can prove useful when web pages from a web server are temporarily or permanently inaccessible. Database caching can substantially improve the throughput of database applications, for example in the processing of indexes, data dictionaries, and frequently used subsets of data. A distributed cache uses networked hosts to provide scalability, reliability and performance to the application. The hosts can be co-located or spread over different geographical regions. The semantics of a "buffer" and a "cache" are not totally different; even so, there are fundamental differences in intent between the process of caching and the process of buffering. Fundamentally, caching realizes a performance increase for transfers of data that is being repeatedly transferred. While a caching system may realize a performance increase upon the initial (typically write) transfer of a data item, this performance increase is due to buffering occurring within the caching system. With read caches, a data item must have been fetched from its residing location at least once in order for subsequent reads of the data item to realize a performance increase by virtue of being able to be fetched from the cache's (faster) intermediate storage rather than the data's residing location. With write caches, a performance increase of writing a data item may be realized upon the first write of the data item by virtue of the data item immediately being stored in the cache's intermediate storage, deferring the transfer of the data item to its residing storage at a later stage or else occurring as a background process. Contrary to strict buffering, a caching process must adhere to a (potentially distributed) cache coherency protocol in order to maintain consistency between the cache's intermediate storage and the location where the data resides. Buffering, on the other hand, With typical caching implementations, a data item that is read or written for the first time is effectively being buffered; and in the case of a write, mostly realizing a performance increase for the application from where the write originated. Additionally, the portion of a caching protocol where individual writes are deferred to a batch of writes is a form of buffering. The portion of a caching protocol where individual reads are deferred to a batch of reads is also a form of buffering, although this form may negatively impact the performance of at least the initial reads (even though it may positively impact the performance of the sum of the individual reads). In practice, caching almost always involves some form of buffering, while strict buffering does not involve caching. A buffer is a temporary memory location that is traditionally used because CPU instructions cannot directly address data stored in peripheral devices. Thus, addressable memory is used as an intermediate stage. Additionally, such a buffer may be feasible when a large block of data is assembled or disassembled (as required by a storage device), or when data may be delivered in a different order than that in which it is produced. Also, a whole buffer of data is usually transferred sequentially (for example to hard disk), so buffering itself sometimes increases transfer performance or reduces the variation or jitter of the transfer's latency as opposed to caching where the intent is to reduce the latency. These benefits are present even if the buffered data are written to the buffer once and read from the buffer once. A cache also increases transfer performance. A part of the increase similarly comes from the possibility that multiple small transfers will combine into one large block. But the main performance-gain occurs because there is a good chance that the same data will be read from cache multiple times, or that written data will soon be read. A cache's sole purpose is to reduce accesses to the underlying slower storage. Cache is also usually an abstraction layer that is designed to be invisible from the perspective of neighboring layers.	[ { "paragraph_id": 0, "text": "In computing, a cache (/kæʃ/ KASH) is a hardware or software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere. A cache hit occurs when the requested data can be found in a cache, while a cache miss occurs when it cannot. Cache hits are served by reading data from the cache, which is faster than recomputing a result or reading from a slower data store; thus, the more requests that can be served from the cache, the faster the system performs.", "title": "" }, { "paragraph_id": 1, "text": "To be cost-effective, caches must be relatively small. Nevertheless, caches are effective in many areas of computing because typical computer applications access data with a high degree of locality of reference. Such access patterns exhibit temporal locality, where data is requested that has been recently requested, and spatial locality, where data is requested that is stored near data that has already been requested.", "title": "" }, { "paragraph_id": 2, "text": "There is an inherent trade-off between size and speed (given that a larger resource implies greater physical distances) but also a tradeoff between expensive, premium technologies (such as SRAM) vs cheaper, easily mass-produced commodities (such as DRAM, flash, or hard disks).", "title": "Motivation" }, { "paragraph_id": 3, "text": "The buffering provided by a cache benefits one or both of latency and throughput (bandwidth):", "title": "Motivation" }, { "paragraph_id": 4, "text": "A larger resource incurs a significant latency for access – e.g. it can take hundreds of clock cycles for a modern 4 GHz processor to reach DRAM. This is mitigated by reading in large chunks, in the hope that subsequent reads will be from nearby locations. Prediction or explicit prefetching might also guess where future reads will come from and make requests ahead of time; if done optimally, the latency is bypassed altogether.", "title": "Motivation" }, { "paragraph_id": 5, "text": "The use of a cache also allows for higher throughput from the underlying resource, by assembling multiple fine grain transfers into larger, more efficient requests. In the case of DRAM circuits, this might be served by having a wider data bus. For example, consider a program accessing bytes in a 32-bit address space, but being served by a 128-bit off-chip data bus; individual uncached byte accesses would allow only 1/16th of the total bandwidth to be used, and 80% of the data movement would be memory addresses instead of data itself. Reading larger chunks reduces the fraction of bandwidth required for transmitting address information.", "title": "Motivation" }, { "paragraph_id": 6, "text": "Hardware implements cache as a block of memory for temporary storage of data likely to be used again. Central processing units (CPUs), solid-state drives (SSDs) and hard disk drives (HDDs) frequently include hardware-based cache, while web browsers and web servers commonly rely on software caching.", "title": "Operation" }, { "paragraph_id": 7, "text": "A cache is made up of a pool of entries. Each entry has associated data, which is a copy of the same data in some backing store. Each entry also has a tag, which specifies the identity of the data in the backing store of which the entry is a copy. Tagging allows simultaneous cache-oriented algorithms to function in multilayered fashion without differential relay interference.", "title": "Operation" }, { "paragraph_id": 8, "text": "When the cache client (a CPU, web browser, operating system) needs to access data presumed to exist in the backing store, it first checks the cache. If an entry can be found with a tag matching that of the desired data, the data in the entry is used instead. This situation is known as a cache hit. For example, a web browser program might check its local cache on disk to see if it has a local copy of the contents of a web page at a particular URL. In this example, the URL is the tag, and the content of the web page is the data. The percentage of accesses that result in cache hits is known as the hit rate or hit ratio of the cache.", "title": "Operation" }, { "paragraph_id": 9, "text": "The alternative situation, when the cache is checked and found not to contain any entry with the desired tag, is known as a cache miss. This requires a more expensive access of data from the backing store. Once the requested data is retrieved, it is typically copied into the cache, ready for the next access.", "title": "Operation" }, { "paragraph_id": 10, "text": "During a cache miss, some other previously existing cache entry is removed in order to make room for the newly retrieved data. The heuristic used to select the entry to replace is known as the replacement policy. One popular replacement policy, \"least recently used\" (LRU), replaces the oldest entry, the entry that was accessed less recently than any other entry. More efficient caching algorithms compute the use-hit frequency against the size of the stored contents, as well as the latencies and throughputs for both the cache and the backing store. This works well for larger amounts of data, longer latencies, and slower throughputs, such as that experienced with hard drives and networks, but is not efficient for use within a CPU cache.", "title": "Operation" }, { "paragraph_id": 11, "text": "When a system writes data to cache, it must at some point write that data to the backing store as well. The timing of this write is controlled by what is known as the write policy. There are two basic writing approaches:", "title": "Operation" }, { "paragraph_id": 12, "text": "A write-back cache is more complex to implement, since it needs to track which of its locations have been written over, and mark them as dirty for later writing to the backing store. The data in these locations are written back to the backing store only when they are evicted from the cache, an effect referred to as a lazy write. For this reason, a read miss in a write-back cache (which requires a block to be replaced by another) will often require two memory accesses to service: one to write the replaced data from the cache back to the store, and then one to retrieve the needed data.", "title": "Operation" }, { "paragraph_id": 13, "text": "Other policies may also trigger data write-back. The client may make many changes to data in the cache, and then explicitly notify the cache to write back the data.", "title": "Operation" }, { "paragraph_id": 14, "text": "Since no data is returned to the requester on write operations, a decision needs to be made on write misses, whether or not data would be loaded into the cache. This is defined by these two approaches:", "title": "Operation" }, { "paragraph_id": 15, "text": "Both write-through and write-back policies can use either of these write-miss policies, but usually they are paired in this way:", "title": "Operation" }, { "paragraph_id": 16, "text": "Entities other than the cache may change the data in the backing store, in which case the copy in the cache may become out-of-date or stale. Alternatively, when the client updates the data in the cache, copies of those data in other caches will become stale. Communication protocols between the cache managers which keep the data consistent are known as coherency protocols.", "title": "Operation" }, { "paragraph_id": 17, "text": "On a cache read miss, caches with a demand paging policy read the minimum amount from the backing store. For example, demand-paging virtual memory reads one page of virtual memory (often 4 kBytes) from disk into the disk cache in RAM. For example, a typical CPU reads a single L2 cache line of 128 bytes from DRAM into the L2 cache, and a single L1 cache line of 64 bytes from the L2 cache into the L1 cache.", "title": "Operation" }, { "paragraph_id": 18, "text": "Caches with a prefetch input queue or more general anticipatory paging policy go further—they not only read the data requested, but guess that the next chunk or two of data will soon be required, and so prefetch that data into the cache ahead of time. Anticipatory paging is especially helpful when the backing store has a long latency to read the first chunk and much shorter times to sequentially read the next few chunks, such as disk storage and DRAM.", "title": "Operation" }, { "paragraph_id": 19, "text": "A few operating systems go further with a loader that always pre-loads the entire executable into RAM.", "title": "Operation" }, { "paragraph_id": 20, "text": "A few caches go even further, not only pre-loading an entire file, but also starting to load other related files that may soon be requested, such as the page cache associated with a prefetcher or the web cache associated with link prefetching.", "title": "Operation" }, { "paragraph_id": 21, "text": "Small memories on or close to the CPU can operate faster than the much larger main memory. Most CPUs since the 1980s have used one or more caches, sometimes in cascaded levels; modern high-end embedded, desktop and server microprocessors may have as many as six types of cache (between levels and functions). Some examples of caches with a specific function are the D-cache, I-cache and the translation lookaside buffer for the memory management unit (MMU).", "title": "Examples of hardware caches" }, { "paragraph_id": 22, "text": "Earlier graphics processing units (GPUs) often had limited read-only texture caches, and introduced Morton order swizzled textures to improve 2D cache coherency. Cache misses would drastically affect performance, e.g. if mipmapping was not used. Caching was important to leverage 32-bit (and wider) transfers for texture data that was often as little as 4 bits per pixel, indexed in complex patterns by arbitrary UV coordinates and perspective transformations in inverse texture mapping.", "title": "Examples of hardware caches" }, { "paragraph_id": 23, "text": "As GPUs advanced (especially with General Purpose GPU compute shaders) they have developed progressively larger and increasingly general caches, including instruction caches for shaders, exhibiting increasingly common functionality with CPU caches. For example, GT200 architecture GPUs did not feature an L2 cache, while the GTX 490 GPU has 768 KB of last-level cache, the GTX TITAN GPU has 1536 KB of last-level cache, and the GTX 980 GPU has 2048 KB of last-level cache. These caches have grown to handle synchronisation primitives between threads and atomic operations, and interface with a CPU-style MMU.", "title": "Examples of hardware caches" }, { "paragraph_id": 24, "text": "Digital signal processors have similarly generalised over the years. Earlier designs used scratchpad memory fed by direct memory access, but modern DSPs such as Qualcomm Hexagon often include a very similar set of caches to a CPU (e.g. Modified Harvard architecture with shared L2, split L1 I-cache and D-cache).", "title": "Examples of hardware caches" }, { "paragraph_id": 25, "text": "A memory management unit (MMU) that fetches page table entries from main memory has a specialized cache, used for recording the results of virtual address to physical address translations. This specialized cache is called a translation lookaside buffer (TLB).", "title": "Examples of hardware caches" }, { "paragraph_id": 26, "text": "Information-centric networking (ICN) is an approach to evolve the Internet infrastructure away from a host-centric paradigm, based on perpetual connectivity and the end-to-end principle, to a network architecture in which the focal point is identified information (or content or data). Due to the inherent caching capability of the nodes in an ICN, it can be viewed as a loosely connected network of caches, which has unique requirements of caching policies. However, ubiquitous content caching introduces the challenge to content protection against unauthorized access, which requires extra care and solutions.", "title": "In-network cache" }, { "paragraph_id": 27, "text": "Unlike proxy servers, in ICN the cache is a network-level solution. Therefore, it has rapidly changing cache states and higher request arrival rates; moreover, smaller cache sizes further impose a different kind of requirements on the content eviction policies. In particular, eviction policies for ICN should be fast and lightweight. Various cache replication and eviction schemes for different ICN architectures and applications have been proposed.", "title": "In-network cache" }, { "paragraph_id": 28, "text": "The Time aware Least Recently Used (TLRU) is a variant of LRU designed for the situation where the stored contents in cache have a valid life time. The algorithm is suitable in network cache applications, such as ICN, content delivery networks (CDNs) and distributed networks in general. TLRU introduces a new term: TTU (Time to Use). TTU is a time stamp of a content/page which stipulates the usability time for the content based on the locality of the content and the content publisher announcement. Owing to this locality based time stamp, TTU provides more control to the local administrator to regulate in network storage.", "title": "In-network cache" }, { "paragraph_id": 29, "text": "In the TLRU algorithm, when a piece of content arrives, a cache node calculates the local TTU value based on the TTU value assigned by the content publisher. The local TTU value is calculated by using a locally defined function. Once the local TTU value is calculated the replacement of content is performed on a subset of the total content stored in cache node. The TLRU ensures that less popular and small life content should be replaced with the incoming content.", "title": "In-network cache" }, { "paragraph_id": 30, "text": "The Least Frequent Recently Used (LFRU) cache replacement scheme combines the benefits of LFU and LRU schemes. LFRU is suitable for 'in network' cache applications, such as ICN, CDNs and distributed networks in general. In LFRU, the cache is divided into two partitions called privileged and unprivileged partitions. The privileged partition can be defined as a protected partition. If content is highly popular, it is pushed into the privileged partition. Replacement of the privileged partition is done as follows: LFRU evicts content from the unprivileged partition, pushes content from privileged partition to unprivileged partition, and finally inserts new content into the privileged partition. In the above procedure the LRU is used for the privileged partition and an approximated LFU (ALFU) scheme is used for the unprivileged partition, hence the abbreviation LFRU. The basic idea is to filter out the locally popular contents with ALFU scheme and push the popular contents to one of the privileged partition.", "title": "In-network cache" }, { "paragraph_id": 31, "text": "In 2011, the use of smartphones with weather forecasting options was overly taxing AccuWeather servers; two requests within the same park would generate separate requests. An optimization by edge-servers to truncate the GPS coordinates to fewer decimal places meant that the cached results from the earlier query would be used. The number of to-the-server lookups per day dropped by half.", "title": "In-network cache" }, { "paragraph_id": 32, "text": "While CPU caches are generally managed entirely by hardware, a variety of software manages other caches. The page cache in main memory, which is an example of disk cache, is managed by the operating system kernel.", "title": "Software caches" }, { "paragraph_id": 33, "text": "While the disk buffer, which is an integrated part of the hard disk drive or solid state drive, is sometimes misleadingly referred to as \"disk cache\", its main functions are write sequencing and read prefetching. Repeated cache hits are relatively rare, due to the small size of the buffer in comparison to the drive's capacity. However, high-end disk controllers often have their own on-board cache of the hard disk drive's data blocks.", "title": "Software caches" }, { "paragraph_id": 34, "text": "Finally, a fast local hard disk drive can also cache information held on even slower data storage devices, such as remote servers (web cache) or local tape drives or optical jukeboxes; such a scheme is the main concept of hierarchical storage management. Also, fast flash-based solid-state drives (SSDs) can be used as caches for slower rotational-media hard disk drives, working together as hybrid drives or solid-state hybrid drives (SSHDs).", "title": "Software caches" }, { "paragraph_id": 35, "text": "Web browsers and web proxy servers employ web caches to store previous responses from web servers, such as web pages and images. Web caches reduce the amount of information that needs to be transmitted across the network, as information previously stored in the cache can often be re-used. This reduces bandwidth and processing requirements of the web server, and helps to improve responsiveness for users of the web.", "title": "Software caches" }, { "paragraph_id": 36, "text": "Web browsers employ a built-in web cache, but some Internet service providers (ISPs) or organizations also use a caching proxy server, which is a web cache that is shared among all users of that network.", "title": "Software caches" }, { "paragraph_id": 37, "text": "Another form of cache is P2P caching, where the files most sought for by peer-to-peer applications are stored in an ISP cache to accelerate P2P transfers. Similarly, decentralised equivalents exist, which allow communities to perform the same task for P2P traffic, for example, Corelli.", "title": "Software caches" }, { "paragraph_id": 38, "text": "A cache can store data that is computed on demand rather than retrieved from a backing store. Memoization is an optimization technique that stores the results of resource-consuming function calls within a lookup table, allowing subsequent calls to reuse the stored results and avoid repeated computation. It is related to the dynamic programming algorithm design methodology, which can also be thought of as a means of caching.", "title": "Software caches" }, { "paragraph_id": 39, "text": "A content delivery network (CDN) is a network of distributed servers that deliver pages and other Web content to a user, based on the geographic locations of the user, the origin of the web page and the content delivery server.", "title": "Software caches" }, { "paragraph_id": 40, "text": "CDNs began in the late 1990s as a way to speed up the delivery of static content, such as HTML pages, images and videos. By replicating content on multiple servers around the world and delivering it to users based on their location, CDNs can significantly improve the speed and availability of a website or application. When a user requests a piece of content, the CDN will check to see if it has a copy of the content in its cache. If it does, the CDN will deliver the content to the user from the cache.", "title": "Software caches" }, { "paragraph_id": 41, "text": "A cloud storage gateway, also known as an edge filer, is a hybrid cloud storage device that connects a local network to one or more cloud storage services, typically object storage services such as Amazon S3. It provides a cache for frequently accessed data, providing high speed local access to frequently accessed data in the cloud storage service. Cloud storage gateways also provide additional benefits such as accessing cloud object storage through traditional file serving protocols as well as continued access to cached data during connectivity outages.", "title": "Software caches" }, { "paragraph_id": 42, "text": "The BIND DNS daemon caches a mapping of domain names to IP addresses, as does a resolver library.", "title": "Software caches" }, { "paragraph_id": 43, "text": "Write-through operation is common when operating over unreliable networks (like an Ethernet LAN), because of the enormous complexity of the coherency protocol required between multiple write-back caches when communication is unreliable. For instance, web page caches and client-side network file system caches (like those in NFS or SMB) are typically read-only or write-through specifically to keep the network protocol simple and reliable.", "title": "Software caches" }, { "paragraph_id": 44, "text": "Search engines also frequently make web pages they have indexed available from their cache. For example, Google provides a \"Cached\" link next to each search result. This can prove useful when web pages from a web server are temporarily or permanently inaccessible.", "title": "Software caches" }, { "paragraph_id": 45, "text": "Database caching can substantially improve the throughput of database applications, for example in the processing of indexes, data dictionaries, and frequently used subsets of data.", "title": "Software caches" }, { "paragraph_id": 46, "text": "A distributed cache uses networked hosts to provide scalability, reliability and performance to the application. The hosts can be co-located or spread over different geographical regions.", "title": "Software caches" }, { "paragraph_id": 47, "text": "The semantics of a \"buffer\" and a \"cache\" are not totally different; even so, there are fundamental differences in intent between the process of caching and the process of buffering.", "title": "Buffer vs. cache" }, { "paragraph_id": 48, "text": "Fundamentally, caching realizes a performance increase for transfers of data that is being repeatedly transferred. While a caching system may realize a performance increase upon the initial (typically write) transfer of a data item, this performance increase is due to buffering occurring within the caching system.", "title": "Buffer vs. cache" }, { "paragraph_id": 49, "text": "With read caches, a data item must have been fetched from its residing location at least once in order for subsequent reads of the data item to realize a performance increase by virtue of being able to be fetched from the cache's (faster) intermediate storage rather than the data's residing location. With write caches, a performance increase of writing a data item may be realized upon the first write of the data item by virtue of the data item immediately being stored in the cache's intermediate storage, deferring the transfer of the data item to its residing storage at a later stage or else occurring as a background process. Contrary to strict buffering, a caching process must adhere to a (potentially distributed) cache coherency protocol in order to maintain consistency between the cache's intermediate storage and the location where the data resides. Buffering, on the other hand,", "title": "Buffer vs. cache" }, { "paragraph_id": 50, "text": "With typical caching implementations, a data item that is read or written for the first time is effectively being buffered; and in the case of a write, mostly realizing a performance increase for the application from where the write originated. Additionally, the portion of a caching protocol where individual writes are deferred to a batch of writes is a form of buffering. The portion of a caching protocol where individual reads are deferred to a batch of reads is also a form of buffering, although this form may negatively impact the performance of at least the initial reads (even though it may positively impact the performance of the sum of the individual reads). In practice, caching almost always involves some form of buffering, while strict buffering does not involve caching.", "title": "Buffer vs. cache" }, { "paragraph_id": 51, "text": "A buffer is a temporary memory location that is traditionally used because CPU instructions cannot directly address data stored in peripheral devices. Thus, addressable memory is used as an intermediate stage. Additionally, such a buffer may be feasible when a large block of data is assembled or disassembled (as required by a storage device), or when data may be delivered in a different order than that in which it is produced. Also, a whole buffer of data is usually transferred sequentially (for example to hard disk), so buffering itself sometimes increases transfer performance or reduces the variation or jitter of the transfer's latency as opposed to caching where the intent is to reduce the latency. These benefits are present even if the buffered data are written to the buffer once and read from the buffer once.", "title": "Buffer vs. cache" }, { "paragraph_id": 52, "text": "A cache also increases transfer performance. A part of the increase similarly comes from the possibility that multiple small transfers will combine into one large block. But the main performance-gain occurs because there is a good chance that the same data will be read from cache multiple times, or that written data will soon be read. A cache's sole purpose is to reduce accesses to the underlying slower storage. Cache is also usually an abstraction layer that is designed to be invisible from the perspective of neighboring layers.", "title": "Buffer vs. cache" } ]	In computing, a cache is a hardware or software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere. A cache hit occurs when the requested data can be found in a cache, while a cache miss occurs when it cannot. Cache hits are served by reading data from the cache, which is faster than recomputing a result or reading from a slower data store; thus, the more requests that can be served from the cache, the faster the system performs. To be cost-effective, caches must be relatively small. Nevertheless, caches are effective in many areas of computing because typical computer applications access data with a high degree of locality of reference. Such access patterns exhibit temporal locality, where data is requested that has been recently requested, and spatial locality, where data is requested that is stored near data that has already been requested.	2001-10-18T10:34:37Z	2023-12-16T00:17:23Z	[ "Template:IPAc-en", "Template:Citation needed", "Template:Cite web", "Template:Div col end", "Template:Reflist", "Template:Cite magazine", "Template:Short description", "Template:Use dmy dates", "Template:Respell", "Template:See", "Template:Div col", "Template:Authority control", "Template:Anchor", "Template:More citations needed section", "Template:Cite conference", "Template:Main", "Template:Cite journal", "Template:Cite book" ]	https://en.wikipedia.org/wiki/Cache_(computing)
6,830	Columbus, Indiana	Columbus (/kəˈlʌmbəs/) is a city in, and the county seat of, Bartholomew County, Indiana, United States. The population was 50,474 at the 2020 Census. The city is known for its architectural significance, having commissioned numerous noted works of modern architecture and public art since the mid-20th century; the annual program Exhibit Columbus celebrates this legacy. Located about 40 mi (64 km) south of Indianapolis, on the east fork of the White River, it is the state's 20th-largest city. It is the principal city of the Columbus, Indiana metropolitan statistical area, which encompasses all of Bartholomew County. Columbus is the birthplace of former Indiana Governor and former Vice President of the United States, Mike Pence. Columbus is the headquarters of the engine company Cummins, Inc. In 2004 the city was named as one of "The Ten Most Playful Towns" by Nick Jr. Family Magazine. In the July 2005 edition of GQ magazine, Columbus was named as one of the "62 Reasons to Love Your Country". Columbus won the national contest "America in Bloom" in 2006, and in late 2008, National Geographic Traveler ranked Columbus 11th on its historic destinations list, describing the city as "authentic, unique, and unspoiled." The land developed as Columbus was bought by General John Tipton and Luke Bonesteel in 1820. Tipton built a log cabin on Mount Tipton, a small hill overlooking White River and the surrounding flat, heavily forested and swampy valley. It held wetlands of the river. The town was first known as Tiptona, named in honor of Tipton. The town's name was changed to Columbus on March 20, 1821. Many people believe Tipton was upset by the name change, but no evidence exists to prove this. Nonetheless, he decided to leave the newly founded town and did not return. Tipton was later appointed as the highway commissioner for the State of Indiana and was assigned to building a highway from Indianapolis, Indiana to Louisville, Kentucky. When the road approached Columbus, Tipton constructed the first bypass road ever built; it detoured south around the west side of Columbus en route to Seymour. Joseph McKinney was the first to plot the town of Columbus, but no date was recorded. Local history books for years said that the land on which Columbus sits was donated by Tipton. But in 2003, Historic Columbus Indiana acquired a deed showing that Tipton had sold the land. A ferry was established below the confluence of the Flatrock and Driftwood rivers, which form the White River. A village of three or four log cabins developed around the ferry landing, and a store was added in 1821. Later that year, Bartholomew County was organized by an act of the State Legislature and named to honor the famous Hoosier militiaman, General Joseph Bartholomew. Columbus was incorporated on June 28, 1864. The first railroad in Indiana was constructed to Columbus from Madison, Indiana in 1844. This eventually became the Madison branch of the Pennsylvania Railroad. The railroad fostered the growth of the community into one of the largest in Indiana, and three more railroads reached the city by 1850. The Crump Theatre in Columbus, built in 1889 by John Crump, is the oldest theater in Indiana Today the building is included within the Columbus Historic District. Before it closed permanently in 2010, it was an all-ages venue with occasional musical performances. The Cummins Bookstore began operations in the city in 1892. Until late 2007, when it closed, it was the oldest continually operated bookstore in Indiana. The Irwin Union Bank building was built in 1954. It was designated as a National Historic Landmark by the National Park Service in 2001 in recognition of its unique architecture. The building consists of a one-story bank structure adjacent to a three-story office annex. A portion of the office annex was built along with the banking hall in 1954. The remaining larger portion, designed by Kevin Roche John Dinkeloo and Associates, was built in 1973. Eero Saarinen designed the bank building with its glazed hall to be set off against the blank background of its three-story brick annex. Two steel and glass vestibule connectors lead from the north side of this structure to the annex. The building was designed to distance the Irwin Union Bank from traditional banking architecture, which mostly echoed imposing, neoclassical style buildings of brick or stone. Tellers were behind iron bars and removed from their customers. Saarinen worked to develop a building that would welcome customers rather than intimidate them. Columbus has been home to many manufacturing companies, including Noblitt-Sparks Industries, which built radios under the Arvin brand in the 1930s, and Arvin Industries, now Meritor, Inc. After merging with Meritor Automotive on July 10, 2000, the headquarters of the newly created ArvinMeritor Industries was established in Troy, Michigan, the home of parent company, Rockwell International. It was announced in February 2011 that the company name would revert to Meritor, Inc. Cummins, Inc. is by far the region's largest employer, and the Infotech Park in Columbus accounts for a sizable number of research jobs in the city itself. Just south of Columbus are the North American headquarters of Toyota Material Handling, U.S.A., Inc., the world's largest material handling (forklift) manufacturer. Other notable industries include architecture, a discipline for which Columbus is famous worldwide. The late J. Irwin Miller (then president and chairman of Cummins Engine Company) launched the Cummins Foundation, a charitable program that helps subsidize a large number of architectural projects throughout the city by up-and-coming engineers and architects. Early in the 20th century, Columbus also was home to a number of pioneering car manufacturers, including Reeves, which produced the unusual four-axle Octoauto and the twin rear-axle Sextoauto, both around 1911. Columbus is located at 39°12′50″N 85°54′40″W / 39.21389°N 85.91111°W / 39.21389; -85.91111 (39.213998, −85.911056). The Driftwood and Flatrock Rivers converge at Columbus to form the East Fork of the White River. According to the 2010 census, Columbus has a total area of 27.886 square miles (72.22 km), of which 27.5 square miles (71.22 km) (or 98.62%) is land and 0.386 square miles (1.00 km) (or 1.38%) is water. As of the census of 2010, there were 44,061 people, 17,787 households, and 11,506 families residing in the city. The population density was 1,602.2 inhabitants per square mile (618.6/km). There were 19,700 housing units at an average density of 716.4 per square mile (276.6/km). The racial makeup of the city was 86.9% White, 2.7% African American, 0.2% Native American, 5.6% Asian, 0.1% Pacific Islander, 2.5% from other races, and 2.0% from two or more races. Hispanic or Latino of any race were 5.8% of the population. There were 17,787 households, of which 33.5% had children under the age of 18 living with them, 48.5% were married couples living together, 11.7% had a female householder with no husband present, 4.5% had a male householder with no wife present, and 35.3% were non-families. 29.7% of all households were made up of individuals, and 11.5% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 3.00. The median age in the city was 37.1 years. 25.2% of residents were under the age of 18; 8.1% were between the ages of 18 and 24; 27.3% were from 25 to 44; 24.9% were from 45 to 64; and 14.4% were 65 years of age or older. The gender makeup of the city was 48.4% male and 51.6% female. As of the census of 2000, there were 39,059 people, 15,985 households, and 10,566 families residing in the city. The population density was 1,505.3 inhabitants per square mile (581.2/km). There were 17,162 housing units at an average density of 661.4 per square mile (255.4/km). The racial makeup of the city was 91.32% White, 2.71% Black or African American, 0.13% Native American, 3.23% Asian, 0.05% Pacific Islander, 1.39% from other races, and 1.19% from two or more races. 2.81% of the population were Hispanic or Latino of any race. There were 15,985 households, out of which 31.8% had children under the age of 18 living with them, 51.9% were married couples living together, 11.0% had a female householder with no husband present, and 33.9% were non-families. 29.1% of all households were composed of individuals, and 10.7% had someone living alone who was 65 years of age or older. The average household size was 2.39, and the average family size was 2.94. In the city, the population was spread out, with 25.7% under the age of 18, 8.0% from 18 to 24 years, 29.5% from 25 to 44 years, 23.0% from 45 to 64 years, and 13.7% over the age of 65. The median age was 36 years. There were 92.8 males for every 100 females and 89.6 males for every 100 females over age 18. The median income for a household in the city was $41,723, and the median income for a family was $52,296. Males had a median income of $40,367 versus $24,446 for females, and the per capita income was $22,055. About 6.5% of families and 8.1% of the population were below the poverty line, including 9.7% of those under age 18 and 8.8% of those age 65 or over. Columbus is a city known for its modern architecture and public art. J. Irwin Miller, 2nd CEO and a nephew of a co-founder of Cummins Inc., the Columbus-headquartered diesel engine manufacturer, instituted a program in which the Cummins Foundation paid the architects' fees, provided the client selected a firm from a list compiled by the foundation. The plan was initiated with public schools and was so successful that the foundation decided to offer such design support to other non-profit and civic organizations. The high number of notable public buildings and public art in the Columbus area, designed by such individuals as Eero Saarinen, I.M. Pei, Robert Venturi, Cesar Pelli, and Richard Meier, led to Columbus earning the nickname "Athens on the Prairie." Seven buildings, constructed between 1942 and 1965, are National Historic Landmarks, and approximately 60 other buildings sustain the Bartholomew County seat's reputation as a showcase of modern architecture. National Public Radio once devoted an article to the town's architecture. In 2015, Landmark Columbus was created as a program of Heritage Fund - The Community Foundation of Bartholomew county. In addition to the Columbus Historic District and Irwin Union Bank, the city has numerous buildings listed on the National Register of Historic Places, including seven National Historic Landmarks of modernist architecture: Bartholomew County Courthouse, Columbus City Hall, First Baptist Church, First Christian Church, Haw Creek Leather Company, Mabel McDowell Elementary School, McEwen-Samuels-Marr House, McKinley School, Miller House, North Christian Church, and The Republic Newspaper Office. The city is the basis for the 2017 film Columbus by independent filmmaker Kogonada. The film was shot on location in Columbus over 18 days in the summer of 2016. In May 2016, Landmark Columbus launched Exhibit Columbus as a way to continue the ambitious traditions of the past into the future. Exhibit Columbus features annual programming that alternates between symposium and exhibition years. Columbus High School was home to footwear pioneer Chuck Taylor, who played basketball in Columbus before setting out to promote his now famous shoes and the sport of basketball before being inducted into the Naismith Memorial Basketball Hall of Fame. Two local high schools compete within the state in various sports. Columbus North and Columbus East both have competitive athletics and have many notable athletes that go on to compete in college and beyond. Columbus North High School houses one of the largest high school gyms in the United States. CNHS vs CEHS Indiana Diesels of the Premier Basketball League play their home games at the gymnasium at Ceraland Park, with plans to move to a proposed downtown sports complex in the near future. Columbus boasts over 700 acres (280 ha) of parks and green space and over 20 miles of People Trails. These amenities, in addition to several athletic and community facilities, including Donner Aquatic Center, Lincoln Park Softball Complex, Hamilton Center Ice Arena, Clifty Park, Foundation for Youth/Columbus Gymnastics Center and The Commons, are managed and maintained by the Columbus Parks and Recreation Department. ColumBUS provides bus service in the city with five routes operating Monday through Saturday. The north–south US Route 31 has been diverted to the northeastern part of the city. Interstate 65 bypasses Columbus to the west. Indiana Route 46 runs-east-west through the southern section of the city. Freight rail service is provided by the Louisville and Indiana Railroad (LIRC). The LIRC line runs in a north–south orientation along the western edge of Columbus. The Pennsylvania Railroad's Kentuckyian (Chicago-Louisville) made stops in the city until 1968. The PRR and its successor, the Penn Central, ran the Florida-bound South Wind up to 1971. The city has been earmarked as a location for a new Amtrak station along the Chicago-Indianapolis-Louisville rail corridor. Columbus is served by the Columbus Municipal Airport (KBAK). It is located approximately 3 miles (4.8 km) north of Columbus. The airport handles approximately 40,500 operations per year, with roughly 87% general aviation, 4% air taxi, 8% military and less than 1% commercial service. The airport has two concrete runways; a 6,401-foot runway with approved ILS and GPS approaches (Runway 5-23) and a 5,001 foot crosswind runway, also with GPS approaches, (Runway 14-32). The nearest commercial airport which currently has scheduled airline service is Indianapolis International Airport (IND), located approximately 55 miles (89 km) northwest of Columbus. Louisville Muhammad Ali International Airport and Cincinnati/Northern Kentucky International Airport are 78 miles (126 km) to the south and 83 miles (134 km) to the southeast, respectively. This is a list of notable people who were born in, or who currently live, or have lived in Columbus. The Bartholomew Consolidated School Corporation (BCSC) is the local school district. High schools include: Columbus has a public library, a branch of the Bartholomew County Public Library. Secondary education includes Indiana University–Purdue University Columbus (IUPUC), an Ivy Tech campus, a Purdue Polytechnic campus, and an Indiana Wesleyan University education center. 39°12′50″N 85°54′40″W / 39.213998°N 85.911056°W / 39.213998; -85.911056	[ { "paragraph_id": 0, "text": "Columbus (/kəˈlʌmbəs/) is a city in, and the county seat of, Bartholomew County, Indiana, United States. The population was 50,474 at the 2020 Census. The city is known for its architectural significance, having commissioned numerous noted works of modern architecture and public art since the mid-20th century; the annual program Exhibit Columbus celebrates this legacy. Located about 40 mi (64 km) south of Indianapolis, on the east fork of the White River, it is the state's 20th-largest city. It is the principal city of the Columbus, Indiana metropolitan statistical area, which encompasses all of Bartholomew County. Columbus is the birthplace of former Indiana Governor and former Vice President of the United States, Mike Pence.", "title": "" }, { "paragraph_id": 1, "text": "Columbus is the headquarters of the engine company Cummins, Inc. In 2004 the city was named as one of \"The Ten Most Playful Towns\" by Nick Jr. Family Magazine. In the July 2005 edition of GQ magazine, Columbus was named as one of the \"62 Reasons to Love Your Country\". Columbus won the national contest \"America in Bloom\" in 2006, and in late 2008, National Geographic Traveler ranked Columbus 11th on its historic destinations list, describing the city as \"authentic, unique, and unspoiled.\"", "title": "" }, { "paragraph_id": 2, "text": "The land developed as Columbus was bought by General John Tipton and Luke Bonesteel in 1820. Tipton built a log cabin on Mount Tipton, a small hill overlooking White River and the surrounding flat, heavily forested and swampy valley. It held wetlands of the river. The town was first known as Tiptona, named in honor of Tipton. The town's name was changed to Columbus on March 20, 1821. Many people believe Tipton was upset by the name change, but no evidence exists to prove this. Nonetheless, he decided to leave the newly founded town and did not return.", "title": "History" }, { "paragraph_id": 3, "text": "Tipton was later appointed as the highway commissioner for the State of Indiana and was assigned to building a highway from Indianapolis, Indiana to Louisville, Kentucky. When the road approached Columbus, Tipton constructed the first bypass road ever built; it detoured south around the west side of Columbus en route to Seymour.", "title": "History" }, { "paragraph_id": 4, "text": "Joseph McKinney was the first to plot the town of Columbus, but no date was recorded. Local history books for years said that the land on which Columbus sits was donated by Tipton. But in 2003, Historic Columbus Indiana acquired a deed showing that Tipton had sold the land.", "title": "History" }, { "paragraph_id": 5, "text": "A ferry was established below the confluence of the Flatrock and Driftwood rivers, which form the White River. A village of three or four log cabins developed around the ferry landing, and a store was added in 1821. Later that year, Bartholomew County was organized by an act of the State Legislature and named to honor the famous Hoosier militiaman, General Joseph Bartholomew. Columbus was incorporated on June 28, 1864.", "title": "History" }, { "paragraph_id": 6, "text": "The first railroad in Indiana was constructed to Columbus from Madison, Indiana in 1844. This eventually became the Madison branch of the Pennsylvania Railroad. The railroad fostered the growth of the community into one of the largest in Indiana, and three more railroads reached the city by 1850.", "title": "History" }, { "paragraph_id": 7, "text": "The Crump Theatre in Columbus, built in 1889 by John Crump, is the oldest theater in Indiana Today the building is included within the Columbus Historic District. Before it closed permanently in 2010, it was an all-ages venue with occasional musical performances.", "title": "History" }, { "paragraph_id": 8, "text": "The Cummins Bookstore began operations in the city in 1892. Until late 2007, when it closed, it was the oldest continually operated bookstore in Indiana.", "title": "History" }, { "paragraph_id": 9, "text": "The Irwin Union Bank building was built in 1954. It was designated as a National Historic Landmark by the National Park Service in 2001 in recognition of its unique architecture. The building consists of a one-story bank structure adjacent to a three-story office annex. A portion of the office annex was built along with the banking hall in 1954. The remaining larger portion, designed by Kevin Roche John Dinkeloo and Associates, was built in 1973. Eero Saarinen designed the bank building with its glazed hall to be set off against the blank background of its three-story brick annex. Two steel and glass vestibule connectors lead from the north side of this structure to the annex. The building was designed to distance the Irwin Union Bank from traditional banking architecture, which mostly echoed imposing, neoclassical style buildings of brick or stone. Tellers were behind iron bars and removed from their customers. Saarinen worked to develop a building that would welcome customers rather than intimidate them.", "title": "History" }, { "paragraph_id": 10, "text": "Columbus has been home to many manufacturing companies, including Noblitt-Sparks Industries, which built radios under the Arvin brand in the 1930s, and Arvin Industries, now Meritor, Inc. After merging with Meritor Automotive on July 10, 2000, the headquarters of the newly created ArvinMeritor Industries was established in Troy, Michigan, the home of parent company, Rockwell International. It was announced in February 2011 that the company name would revert to Meritor, Inc.", "title": "Economy" }, { "paragraph_id": 11, "text": "Cummins, Inc. is by far the region's largest employer, and the Infotech Park in Columbus accounts for a sizable number of research jobs in the city itself. Just south of Columbus are the North American headquarters of Toyota Material Handling, U.S.A., Inc., the world's largest material handling (forklift) manufacturer.", "title": "Economy" }, { "paragraph_id": 12, "text": "Other notable industries include architecture, a discipline for which Columbus is famous worldwide. The late J. Irwin Miller (then president and chairman of Cummins Engine Company) launched the Cummins Foundation, a charitable program that helps subsidize a large number of architectural projects throughout the city by up-and-coming engineers and architects.", "title": "Economy" }, { "paragraph_id": 13, "text": "Early in the 20th century, Columbus also was home to a number of pioneering car manufacturers, including Reeves, which produced the unusual four-axle Octoauto and the twin rear-axle Sextoauto, both around 1911.", "title": "Economy" }, { "paragraph_id": 14, "text": "Columbus is located at 39°12′50″N 85°54′40″W / 39.21389°N 85.91111°W / 39.21389; -85.91111 (39.213998, −85.911056). The Driftwood and Flatrock Rivers converge at Columbus to form the East Fork of the White River.", "title": "Geography" }, { "paragraph_id": 15, "text": "According to the 2010 census, Columbus has a total area of 27.886 square miles (72.22 km), of which 27.5 square miles (71.22 km) (or 98.62%) is land and 0.386 square miles (1.00 km) (or 1.38%) is water.", "title": "Geography" }, { "paragraph_id": 16, "text": "As of the census of 2010, there were 44,061 people, 17,787 households, and 11,506 families residing in the city. The population density was 1,602.2 inhabitants per square mile (618.6/km). There were 19,700 housing units at an average density of 716.4 per square mile (276.6/km). The racial makeup of the city was 86.9% White, 2.7% African American, 0.2% Native American, 5.6% Asian, 0.1% Pacific Islander, 2.5% from other races, and 2.0% from two or more races. Hispanic or Latino of any race were 5.8% of the population.", "title": "Demographics" }, { "paragraph_id": 17, "text": "There were 17,787 households, of which 33.5% had children under the age of 18 living with them, 48.5% were married couples living together, 11.7% had a female householder with no husband present, 4.5% had a male householder with no wife present, and 35.3% were non-families. 29.7% of all households were made up of individuals, and 11.5% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 3.00.", "title": "Demographics" }, { "paragraph_id": 18, "text": "The median age in the city was 37.1 years. 25.2% of residents were under the age of 18; 8.1% were between the ages of 18 and 24; 27.3% were from 25 to 44; 24.9% were from 45 to 64; and 14.4% were 65 years of age or older. The gender makeup of the city was 48.4% male and 51.6% female.", "title": "Demographics" }, { "paragraph_id": 19, "text": "As of the census of 2000, there were 39,059 people, 15,985 households, and 10,566 families residing in the city. The population density was 1,505.3 inhabitants per square mile (581.2/km). There were 17,162 housing units at an average density of 661.4 per square mile (255.4/km). The racial makeup of the city was 91.32% White, 2.71% Black or African American, 0.13% Native American, 3.23% Asian, 0.05% Pacific Islander, 1.39% from other races, and 1.19% from two or more races. 2.81% of the population were Hispanic or Latino of any race.", "title": "Demographics" }, { "paragraph_id": 20, "text": "There were 15,985 households, out of which 31.8% had children under the age of 18 living with them, 51.9% were married couples living together, 11.0% had a female householder with no husband present, and 33.9% were non-families. 29.1% of all households were composed of individuals, and 10.7% had someone living alone who was 65 years of age or older. The average household size was 2.39, and the average family size was 2.94.", "title": "Demographics" }, { "paragraph_id": 21, "text": "In the city, the population was spread out, with 25.7% under the age of 18, 8.0% from 18 to 24 years, 29.5% from 25 to 44 years, 23.0% from 45 to 64 years, and 13.7% over the age of 65. The median age was 36 years. There were 92.8 males for every 100 females and 89.6 males for every 100 females over age 18.", "title": "Demographics" }, { "paragraph_id": 22, "text": "The median income for a household in the city was $41,723, and the median income for a family was $52,296. Males had a median income of $40,367 versus $24,446 for females, and the per capita income was $22,055. About 6.5% of families and 8.1% of the population were below the poverty line, including 9.7% of those under age 18 and 8.8% of those age 65 or over.", "title": "Demographics" }, { "paragraph_id": 23, "text": "Columbus is a city known for its modern architecture and public art. J. Irwin Miller, 2nd CEO and a nephew of a co-founder of Cummins Inc., the Columbus-headquartered diesel engine manufacturer, instituted a program in which the Cummins Foundation paid the architects' fees, provided the client selected a firm from a list compiled by the foundation. The plan was initiated with public schools and was so successful that the foundation decided to offer such design support to other non-profit and civic organizations. The high number of notable public buildings and public art in the Columbus area, designed by such individuals as Eero Saarinen, I.M. Pei, Robert Venturi, Cesar Pelli, and Richard Meier, led to Columbus earning the nickname \"Athens on the Prairie.\"", "title": "Arts and culture" }, { "paragraph_id": 24, "text": "Seven buildings, constructed between 1942 and 1965, are National Historic Landmarks, and approximately 60 other buildings sustain the Bartholomew County seat's reputation as a showcase of modern architecture. National Public Radio once devoted an article to the town's architecture.", "title": "Arts and culture" }, { "paragraph_id": 25, "text": "In 2015, Landmark Columbus was created as a program of Heritage Fund - The Community Foundation of Bartholomew county.", "title": "Arts and culture" }, { "paragraph_id": 26, "text": "In addition to the Columbus Historic District and Irwin Union Bank, the city has numerous buildings listed on the National Register of Historic Places, including seven National Historic Landmarks of modernist architecture: Bartholomew County Courthouse, Columbus City Hall, First Baptist Church, First Christian Church, Haw Creek Leather Company, Mabel McDowell Elementary School, McEwen-Samuels-Marr House, McKinley School, Miller House, North Christian Church, and The Republic Newspaper Office.", "title": "Arts and culture" }, { "paragraph_id": 27, "text": "The city is the basis for the 2017 film Columbus by independent filmmaker Kogonada. The film was shot on location in Columbus over 18 days in the summer of 2016.", "title": "Arts and culture" }, { "paragraph_id": 28, "text": "In May 2016, Landmark Columbus launched Exhibit Columbus as a way to continue the ambitious traditions of the past into the future. Exhibit Columbus features annual programming that alternates between symposium and exhibition years.", "title": "Arts and culture" }, { "paragraph_id": 29, "text": "Columbus High School was home to footwear pioneer Chuck Taylor, who played basketball in Columbus before setting out to promote his now famous shoes and the sport of basketball before being inducted into the Naismith Memorial Basketball Hall of Fame.", "title": "Sports" }, { "paragraph_id": 30, "text": "Two local high schools compete within the state in various sports. Columbus North and Columbus East both have competitive athletics and have many notable athletes that go on to compete in college and beyond. Columbus North High School houses one of the largest high school gyms in the United States. CNHS vs CEHS", "title": "Sports" }, { "paragraph_id": 31, "text": "Indiana Diesels of the Premier Basketball League play their home games at the gymnasium at Ceraland Park, with plans to move to a proposed downtown sports complex in the near future.", "title": "Sports" }, { "paragraph_id": 32, "text": "Columbus boasts over 700 acres (280 ha) of parks and green space and over 20 miles of People Trails. These amenities, in addition to several athletic and community facilities, including Donner Aquatic Center, Lincoln Park Softball Complex, Hamilton Center Ice Arena, Clifty Park, Foundation for Youth/Columbus Gymnastics Center and The Commons, are managed and maintained by the Columbus Parks and Recreation Department.", "title": "Parks and recreation" }, { "paragraph_id": 33, "text": "ColumBUS provides bus service in the city with five routes operating Monday through Saturday.", "title": "Transportation" }, { "paragraph_id": 34, "text": "The north–south US Route 31 has been diverted to the northeastern part of the city. Interstate 65 bypasses Columbus to the west. Indiana Route 46 runs-east-west through the southern section of the city.", "title": "Transportation" }, { "paragraph_id": 35, "text": "Freight rail service is provided by the Louisville and Indiana Railroad (LIRC). The LIRC line runs in a north–south orientation along the western edge of Columbus.", "title": "Transportation" }, { "paragraph_id": 36, "text": "The Pennsylvania Railroad's Kentuckyian (Chicago-Louisville) made stops in the city until 1968. The PRR and its successor, the Penn Central, ran the Florida-bound South Wind up to 1971.", "title": "Transportation" }, { "paragraph_id": 37, "text": "The city has been earmarked as a location for a new Amtrak station along the Chicago-Indianapolis-Louisville rail corridor.", "title": "Transportation" }, { "paragraph_id": 38, "text": "Columbus is served by the Columbus Municipal Airport (KBAK). It is located approximately 3 miles (4.8 km) north of Columbus. The airport handles approximately 40,500 operations per year, with roughly 87% general aviation, 4% air taxi, 8% military and less than 1% commercial service. The airport has two concrete runways; a 6,401-foot runway with approved ILS and GPS approaches (Runway 5-23) and a 5,001 foot crosswind runway, also with GPS approaches, (Runway 14-32).", "title": "Transportation" }, { "paragraph_id": 39, "text": "The nearest commercial airport which currently has scheduled airline service is Indianapolis International Airport (IND), located approximately 55 miles (89 km) northwest of Columbus. Louisville Muhammad Ali International Airport and Cincinnati/Northern Kentucky International Airport are 78 miles (126 km) to the south and 83 miles (134 km) to the southeast, respectively.", "title": "Transportation" }, { "paragraph_id": 40, "text": "This is a list of notable people who were born in, or who currently live, or have lived in Columbus.", "title": "Notable people" }, { "paragraph_id": 41, "text": "The Bartholomew Consolidated School Corporation (BCSC) is the local school district. High schools include:", "title": "Education" }, { "paragraph_id": 42, "text": "Columbus has a public library, a branch of the Bartholomew County Public Library.", "title": "Education" }, { "paragraph_id": 43, "text": "Secondary education includes Indiana University–Purdue University Columbus (IUPUC), an Ivy Tech campus, a Purdue Polytechnic campus, and an Indiana Wesleyan University education center.", "title": "Education" }, { "paragraph_id": 44, "text": "39°12′50″N 85°54′40″W / 39.213998°N 85.911056°W / 39.213998; -85.911056", "title": "External links" } ]	Columbus is a city in, and the county seat of, Bartholomew County, Indiana, United States. The population was 50,474 at the 2020 Census. The city is known for its architectural significance, having commissioned numerous noted works of modern architecture and public art since the mid-20th century; the annual program Exhibit Columbus celebrates this legacy. Located about 40 mi (64 km) south of Indianapolis, on the east fork of the White River, it is the state's 20th-largest city. It is the principal city of the Columbus, Indiana metropolitan statistical area, which encompasses all of Bartholomew County. Columbus is the birthplace of former Indiana Governor and former Vice President of the United States, Mike Pence. Columbus is the headquarters of the engine company Cummins, Inc. In 2004 the city was named as one of "The Ten Most Playful Towns" by Nick Jr. Family Magazine. In the July 2005 edition of GQ magazine, Columbus was named as one of the "62 Reasons to Love Your Country". Columbus won the national contest "America in Bloom" in 2006, and in late 2008, National Geographic Traveler ranked Columbus 11th on its historic destinations list, describing the city as "authentic, unique, and unspoiled."	2001-10-18T07:10:03Z	2023-12-23T04:41:19Z	[ "Template:Bartholomew County, Indiana", "Template:Use mdy dates", "Template:US Census population", "Template:NRISref", "Template:Cite journal", "Template:Cite EB1911", "Template:Cite news", "Template:Cite magazine", "Template:Commons category", "Template:Infobox settlement", "Template:Convert", "Template:Coord", "Template:Reflist", "Template:Cite web", "Template:Columbus, Indiana", "Template:Cite book", "Template:Authority control", "Template:Indiana", "Template:IPAc-en", "Template:See also", "Template:ISBN", "Template:NIE Poster", "Template:County Seats of Indiana" ]	https://en.wikipedia.org/wiki/Columbus,_Indiana
6,834	List of computer scientists	This is a list of computer scientists, people who do work in computer science, in particular researchers and authors. Some persons notable as programmers are included here because they work in research as well as program. A few of these people pre-date the invention of the digital computer; they are now regarded as computer scientists because their work can be seen as leading to the invention of the computer. Others are mathematicians whose work falls within what would now be called theoretical computer science, such as complexity theory and algorithmic information theory.	[ { "paragraph_id": 0, "text": "This is a list of computer scientists, people who do work in computer science, in particular researchers and authors.", "title": "" }, { "paragraph_id": 1, "text": "Some persons notable as programmers are included here because they work in research as well as program. A few of these people pre-date the invention of the digital computer; they are now regarded as computer scientists because their work can be seen as leading to the invention of the computer. Others are mathematicians whose work falls within what would now be called theoretical computer science, such as complexity theory and algorithmic information theory.", "title": "" } ]	This is a list of computer scientists, people who do work in computer science, in particular researchers and authors. Some persons notable as programmers are included here because they work in research as well as program. A few of these people pre-date the invention of the digital computer; they are now regarded as computer scientists because their work can be seen as leading to the invention of the computer. Others are mathematicians whose work falls within what would now be called theoretical computer science, such as complexity theory and algorithmic information theory.	2001-10-18T13:06:15Z	2023-12-31T16:07:19Z	[ "Template:Div col", "Template:Div col end", "Template:Use mdy dates", "Template:Horizontal TOC", "Template:Portal", "Template:Reflist", "Template:Commons category", "Template:Short description", "Template:Dynamic list" ]	https://en.wikipedia.org/wiki/List_of_computer_scientists
6,839	Reaction kinetics in uniform supersonic flow	Reaction kinetics in uniform supersonic flow (French: Cinétique de Réaction en Ecoulement Supersonique Uniforme, CRESU) is an experiment investigating chemical reactions taking place at very low temperatures. The technique involves the expansion of a gas or mixture of gases through a de Laval nozzle from a high-pressure reservoir into a vacuum chamber. As it expands, the nozzle collimates the gas into a uniform supersonic beam, which is essentially collision-free and has a temperature that, in the centre-of-mass frame, can be significantly below that of the reservoir gas. Each nozzle produces a characteristic temperature. This way, any temperature between room temperature and about 10 K can be achieved. There are relatively few CRESU apparatuses in existence for the simple reason that the gas throughput and pumping requirements are huge, which makes them expensive to run. Two of the leading centres have been the University of Rennes (France) and the University of Birmingham (UK). A more recent development has been a pulsed version of the CRESU, which requires far less gas and therefore smaller pumps. Most species have a negligible vapour pressure at such low temperatures, and this means that they quickly condense on the sides of the apparatus. Essentially, the CRESU technique provides a "wall-less flow tube", which allows the kinetics of gas-phase reactions to be investigated at much lower temperatures than otherwise possible. Chemical kinetics experiments can then be carried out in a pump–probe fashion, using a laser to initiate the reaction (for example, by preparing one of the reagents by photolysis of a precursor), followed by observation of that same species (for example, by laser-induced fluorescence) after a known time delay. The fluorescence signal is captured by a photomultiplier a known distance downstream of the de Laval nozzle. The time delay can be varied up to the maximum corresponding to the flow time over that known distance. By studying how quickly the reagent species disappears in the presence of differing concentrations of a (usually stable) co-reagent species, the reaction rate constant at the low temperature of the CRESU flow can be determined. Reactions studied by the CRESU technique typically have no significant activation energy barrier. In the case of neutral–neutral reactions (i.e., not involving any charged species, ions), these type of barrier-free reactions usually involve free radical species, such as molecular oxygen (O2), the cyanide radical (CN) or the hydroxyl radical (OH). The energetic driving force for these reactions is typically an attractive long-range intermolecular potential. CRESU experiments have been used to show deviations from Arrhenius kinetics at low temperatures: as the temperature is reduced, the rate constant actually increases. They can explain why chemistry is so prevalent in the interstellar medium, where many different polyatomic species have been detected (by radio astronomy).	[ { "paragraph_id": 0, "text": "Reaction kinetics in uniform supersonic flow (French: Cinétique de Réaction en Ecoulement Supersonique Uniforme, CRESU) is an experiment investigating chemical reactions taking place at very low temperatures.", "title": "" }, { "paragraph_id": 1, "text": "The technique involves the expansion of a gas or mixture of gases through a de Laval nozzle from a high-pressure reservoir into a vacuum chamber. As it expands, the nozzle collimates the gas into a uniform supersonic beam, which is essentially collision-free and has a temperature that, in the centre-of-mass frame, can be significantly below that of the reservoir gas. Each nozzle produces a characteristic temperature. This way, any temperature between room temperature and about 10 K can be achieved.", "title": "" }, { "paragraph_id": 2, "text": "There are relatively few CRESU apparatuses in existence for the simple reason that the gas throughput and pumping requirements are huge, which makes them expensive to run. Two of the leading centres have been the University of Rennes (France) and the University of Birmingham (UK). A more recent development has been a pulsed version of the CRESU, which requires far less gas and therefore smaller pumps.", "title": "Apparatus" }, { "paragraph_id": 3, "text": "Most species have a negligible vapour pressure at such low temperatures, and this means that they quickly condense on the sides of the apparatus. Essentially, the CRESU technique provides a \"wall-less flow tube\", which allows the kinetics of gas-phase reactions to be investigated at much lower temperatures than otherwise possible.", "title": "Kinetics" }, { "paragraph_id": 4, "text": "Chemical kinetics experiments can then be carried out in a pump–probe fashion, using a laser to initiate the reaction (for example, by preparing one of the reagents by photolysis of a precursor), followed by observation of that same species (for example, by laser-induced fluorescence) after a known time delay. The fluorescence signal is captured by a photomultiplier a known distance downstream of the de Laval nozzle. The time delay can be varied up to the maximum corresponding to the flow time over that known distance. By studying how quickly the reagent species disappears in the presence of differing concentrations of a (usually stable) co-reagent species, the reaction rate constant at the low temperature of the CRESU flow can be determined.", "title": "Kinetics" }, { "paragraph_id": 5, "text": "Reactions studied by the CRESU technique typically have no significant activation energy barrier. In the case of neutral–neutral reactions (i.e., not involving any charged species, ions), these type of barrier-free reactions usually involve free radical species, such as molecular oxygen (O2), the cyanide radical (CN) or the hydroxyl radical (OH). The energetic driving force for these reactions is typically an attractive long-range intermolecular potential.", "title": "Kinetics" }, { "paragraph_id": 6, "text": "CRESU experiments have been used to show deviations from Arrhenius kinetics at low temperatures: as the temperature is reduced, the rate constant actually increases. They can explain why chemistry is so prevalent in the interstellar medium, where many different polyatomic species have been detected (by radio astronomy).", "title": "Kinetics" } ]	Reaction kinetics in uniform supersonic flow is an experiment investigating chemical reactions taking place at very low temperatures. The technique involves the expansion of a gas or mixture of gases through a de Laval nozzle from a high-pressure reservoir into a vacuum chamber. As it expands, the nozzle collimates the gas into a uniform supersonic beam, which is essentially collision-free and has a temperature that, in the centre-of-mass frame, can be significantly below that of the reservoir gas. Each nozzle produces a characteristic temperature. This way, any temperature between room temperature and about 10 K can be achieved.		2023-04-07T00:51:29Z	[ "Template:Lang-fr", "Template:Reflist", "Template:Cite journal" ]	https://en.wikipedia.org/wiki/Reaction_kinetics_in_uniform_supersonic_flow
6,840	Cygwin	Cygwin (/ˈsɪɡwɪn/ SIG-win) is a Unix-like environment and command-line interface for Microsoft Windows. Cygwin's purpose is expressed in its motto: "Get that Linux feeling – on Windows". The terminal emulator Mintty is the default command-line interface provided to interact with the environment. The Cygwin installation's directory layout mimics the root file system of Unix-like systems, with directories such as /bin, /home, /etc, /usr, and /var. In addition to providing many Unix utilities and a Unix look and feel, Cygwin allows source code designed for Unix-like operating systems to be compiled and run on Windows with minimal modification. Cygwin provides native integration of Windows-based applications. Thus it is possible to launch Windows applications from the Cygwin environment, as well as to use Cygwin tools and applications within the Windows operating context. Cygwin consists of two parts: Cygwin is free and open-source software, released under the GNU Lesser General Public License version 3. It was originally developed by Cygnus Solutions, which was later acquired by Red Hat (now part of IBM), to port the Linux toolchain to Win32, including the GNU Compiler Suite. Rather than rewrite the tools to use the Win32 runtime environment, Cygwin implemented a POSIX-compatible environment in the form of a dynamic-link library (DLL). The Cygwin environment is provided in two versions; the full 64-bit version and a stripped down 32-bit version whose final version was released in 2022. Cygwin consists of a library that implements the POSIX system call API in terms of Windows system calls to enable running of a large number of application programs equivalent to those on Unix systems, and a GNU development toolchain (including GCC and GDB) to allow software development. Programmers have ported many Unix, GNU, BSD and Linux programs and packages to Cygwin, including the X Window System, K Desktop Environment 3, GNOME, Apache, and TeX. Cygwin permits installing inetd, syslogd, sshd, Apache, and other daemons as standard Windows services, allowing Microsoft Windows systems to emulate Unix and Linux servers. Cygwin programs are installed by running Cygwin's "setup" program, which downloads the necessary program and feature package files from repositories on the Internet. Setup can install, update, and remove programs and their source code packages. A complete installation will take in excess of 90 GB of hard disk space, but usable configurations may require as little as 1 or 2 GB. Efforts to reconcile concepts that differ between Unix and Windows systems include: The version of gcc that comes with Cygwin has various extensions for creating Windows DLLs, specifying whether a program is a windowing or console-mode program, adding resources, etc. Support for compiling programs that do not require the POSIX compatibility layer provided by the Cygwin DLL used to be included in the default gcc, but as of 2014 is provided by cross-compilers contributed by the MinGW-w64 project. Cygwin is used for porting many popular pieces of software to the Windows platform. It is used to compile Sun Java, LibreOffice, Apache OpenOffice and web server software like Lighttpd and Hiawatha. The Cygwin API library is licensed under the GNU Lesser General Public License version 3 (or later) with an exception to allow linking to any free and open-source software whose license conforms to the Open Source Definition (less strict than the Free Software Definition). Cygwin began in 1995 as a project of Steve Chamberlain, a Cygnus engineer who observed that Windows NT and 95 used COFF as their object file format, and that GNU already included support for x86 and COFF, and the C library newlib. He thought it would be possible to retarget GCC and produce a cross compiler generating executables that could run on Windows. This proved practical and a prototype was quickly developed. The next step was to attempt to bootstrap the compiler on a Windows system, requiring sufficient emulation of Unix to let the GNU configure shell script run. A Bourne shell-compatible command interpreter, such as bash, was needed and in turn a fork system call emulation and standard input/output. Windows includes similar functionality, so the Cygwin library just needed to provide a POSIX-compatible application programming interface (API) and properly translate calls and manage private versions of data, such as file descriptors. Initially, Cygwin was called gnuwin32 (not to be confused with the current GnuWin32 project). The name was changed to Cygwin32 to emphasize Cygnus' role in creating it. When Microsoft registered the trademark Win32, the 32 was dropped to simply become Cygwin. By 1996, other engineers had joined in, because it was clear that Cygwin would be a useful way to provide Cygnus' embedded tools hosted on Windows systems (the previous strategy had been to use DJGPP). It was especially attractive because it was possible to do a three-way cross-compile, for instance to use a hefty Sun Microsystems workstation to build, say, a Windows-x-MIPS cross-compiler, which was faster than using the PC at the time. In 1999, Cygnus offered Cygwin 1.0 as a commercial product of interest in its own right although subsequent versions have not been released, instead relying on continued open source releases. Geoffrey Noer was the project lead from 1996 to 1999. Christopher Faylor was lead from 1999 to 2004 when he left Red Hat and became co-lead with Corinna Vinschen until Faylor withdrew from active participation in the project mid-2014. Corinna Vinschen has been the project lead from mid-2014 to date (as of March 30, 2023). From June 23, 2016 the Cygwin library version 2.5.2 was licensed under the GNU Lesser General Public License (LGPL) version 3, so is now possible to link against closed source applications. Before this was available there were two possibilities: to release the source code of the application or buy a Cygwin license to release a closed source application. Cygwin's base package selection is fairly small (about 100 MB), containing little more than the bash (interactive user) and dash (installation) shells and the core file and text manipulation utilities expected of a Unix command line. Additional packages are available as optional installs from within the Cygwin Setup program and package manager ("setup-x86_64.exe" – 64bit). These include (from over 12000 others): The Cygwin/X project contributes an implementation of the X Window System that allows graphical Unix programs to display their user interfaces on the Windows desktop. This can be used with both local and remote programs. Cygwin/X supports over 500 packages including major X window managers, desktop environments, and applications, for example: In addition to the low-level Xlib/XCB libraries for developing X applications, Cygwin ships with various higher-level and cross-platform GUI frameworks, including GTK+ and Qt. The Cygwin Ports project provided many additional packages that were not available in the Cygwin distribution itself. Examples included GNOME and K Desktop Environment 3 as well as the MySQL database and the PHP scripting language. Most ports have been adopted by volunteer maintainers as Cygwin packages, and Cygwin Ports are no longer maintained.	[ { "paragraph_id": 0, "text": "Cygwin (/ˈsɪɡwɪn/ SIG-win) is a Unix-like environment and command-line interface for Microsoft Windows. Cygwin's purpose is expressed in its motto: \"Get that Linux feeling – on Windows\".", "title": "" }, { "paragraph_id": 1, "text": "The terminal emulator Mintty is the default command-line interface provided to interact with the environment. The Cygwin installation's directory layout mimics the root file system of Unix-like systems, with directories such as /bin, /home, /etc, /usr, and /var.", "title": "" }, { "paragraph_id": 2, "text": "In addition to providing many Unix utilities and a Unix look and feel, Cygwin allows source code designed for Unix-like operating systems to be compiled and run on Windows with minimal modification.", "title": "" }, { "paragraph_id": 3, "text": "Cygwin provides native integration of Windows-based applications. Thus it is possible to launch Windows applications from the Cygwin environment, as well as to use Cygwin tools and applications within the Windows operating context.", "title": "" }, { "paragraph_id": 4, "text": "Cygwin consists of two parts:", "title": "" }, { "paragraph_id": 5, "text": "Cygwin is free and open-source software, released under the GNU Lesser General Public License version 3. It was originally developed by Cygnus Solutions, which was later acquired by Red Hat (now part of IBM), to port the Linux toolchain to Win32, including the GNU Compiler Suite. Rather than rewrite the tools to use the Win32 runtime environment, Cygwin implemented a POSIX-compatible environment in the form of a dynamic-link library (DLL).", "title": "" }, { "paragraph_id": 6, "text": "The Cygwin environment is provided in two versions; the full 64-bit version and a stripped down 32-bit version whose final version was released in 2022. Cygwin consists of a library that implements the POSIX system call API in terms of Windows system calls to enable running of a large number of application programs equivalent to those on Unix systems, and a GNU development toolchain (including GCC and GDB) to allow software development. Programmers have ported many Unix, GNU, BSD and Linux programs and packages to Cygwin, including the X Window System, K Desktop Environment 3, GNOME, Apache, and TeX. Cygwin permits installing inetd, syslogd, sshd, Apache, and other daemons as standard Windows services, allowing Microsoft Windows systems to emulate Unix and Linux servers.", "title": "Description" }, { "paragraph_id": 7, "text": "Cygwin programs are installed by running Cygwin's \"setup\" program, which downloads the necessary program and feature package files from repositories on the Internet. Setup can install, update, and remove programs and their source code packages. A complete installation will take in excess of 90 GB of hard disk space, but usable configurations may require as little as 1 or 2 GB.", "title": "Description" }, { "paragraph_id": 8, "text": "Efforts to reconcile concepts that differ between Unix and Windows systems include:", "title": "Description" }, { "paragraph_id": 9, "text": "The version of gcc that comes with Cygwin has various extensions for creating Windows DLLs, specifying whether a program is a windowing or console-mode program, adding resources, etc. Support for compiling programs that do not require the POSIX compatibility layer provided by the Cygwin DLL used to be included in the default gcc, but as of 2014 is provided by cross-compilers contributed by the MinGW-w64 project.", "title": "Description" }, { "paragraph_id": 10, "text": "Cygwin is used for porting many popular pieces of software to the Windows platform. It is used to compile Sun Java, LibreOffice, Apache OpenOffice and web server software like Lighttpd and Hiawatha.", "title": "Description" }, { "paragraph_id": 11, "text": "The Cygwin API library is licensed under the GNU Lesser General Public License version 3 (or later) with an exception to allow linking to any free and open-source software whose license conforms to the Open Source Definition (less strict than the Free Software Definition).", "title": "Description" }, { "paragraph_id": 12, "text": "Cygwin began in 1995 as a project of Steve Chamberlain, a Cygnus engineer who observed that Windows NT and 95 used COFF as their object file format, and that GNU already included support for x86 and COFF, and the C library newlib. He thought it would be possible to retarget GCC and produce a cross compiler generating executables that could run on Windows. This proved practical and a prototype was quickly developed.", "title": "History" }, { "paragraph_id": 13, "text": "The next step was to attempt to bootstrap the compiler on a Windows system, requiring sufficient emulation of Unix to let the GNU configure shell script run. A Bourne shell-compatible command interpreter, such as bash, was needed and in turn a fork system call emulation and standard input/output. Windows includes similar functionality, so the Cygwin library just needed to provide a POSIX-compatible application programming interface (API) and properly translate calls and manage private versions of data, such as file descriptors.", "title": "History" }, { "paragraph_id": 14, "text": "Initially, Cygwin was called gnuwin32 (not to be confused with the current GnuWin32 project). The name was changed to Cygwin32 to emphasize Cygnus' role in creating it. When Microsoft registered the trademark Win32, the 32 was dropped to simply become Cygwin.", "title": "History" }, { "paragraph_id": 15, "text": "By 1996, other engineers had joined in, because it was clear that Cygwin would be a useful way to provide Cygnus' embedded tools hosted on Windows systems (the previous strategy had been to use DJGPP). It was especially attractive because it was possible to do a three-way cross-compile, for instance to use a hefty Sun Microsystems workstation to build, say, a Windows-x-MIPS cross-compiler, which was faster than using the PC at the time. In 1999, Cygnus offered Cygwin 1.0 as a commercial product of interest in its own right although subsequent versions have not been released, instead relying on continued open source releases.", "title": "History" }, { "paragraph_id": 16, "text": "Geoffrey Noer was the project lead from 1996 to 1999. Christopher Faylor was lead from 1999 to 2004 when he left Red Hat and became co-lead with Corinna Vinschen until Faylor withdrew from active participation in the project mid-2014. Corinna Vinschen has been the project lead from mid-2014 to date (as of March 30, 2023).", "title": "History" }, { "paragraph_id": 17, "text": "From June 23, 2016 the Cygwin library version 2.5.2 was licensed under the GNU Lesser General Public License (LGPL) version 3, so is now possible to link against closed source applications. Before this was available there were two possibilities: to release the source code of the application or buy a Cygwin license to release a closed source application.", "title": "History" }, { "paragraph_id": 18, "text": "Cygwin's base package selection is fairly small (about 100 MB), containing little more than the bash (interactive user) and dash (installation) shells and the core file and text manipulation utilities expected of a Unix command line. Additional packages are available as optional installs from within the Cygwin Setup program and package manager (\"setup-x86_64.exe\" – 64bit). These include (from over 12000 others):", "title": "Features" }, { "paragraph_id": 19, "text": "The Cygwin/X project contributes an implementation of the X Window System that allows graphical Unix programs to display their user interfaces on the Windows desktop. This can be used with both local and remote programs. Cygwin/X supports over 500 packages including major X window managers, desktop environments, and applications, for example:", "title": "Features" }, { "paragraph_id": 20, "text": "In addition to the low-level Xlib/XCB libraries for developing X applications, Cygwin ships with various higher-level and cross-platform GUI frameworks, including GTK+ and Qt.", "title": "Features" }, { "paragraph_id": 21, "text": "The Cygwin Ports project provided many additional packages that were not available in the Cygwin distribution itself. Examples included GNOME and K Desktop Environment 3 as well as the MySQL database and the PHP scripting language. Most ports have been adopted by volunteer maintainers as Cygwin packages, and Cygwin Ports are no longer maintained.", "title": "Features" } ]	Cygwin is a Unix-like environment and command-line interface for Microsoft Windows. Cygwin's purpose is expressed in its motto: "Get that Linux feeling – on Windows". The terminal emulator Mintty is the default command-line interface provided to interact with the environment. The Cygwin installation's directory layout mimics the root file system of Unix-like systems, with directories such as /bin, /home, /etc, /usr, and /var. In addition to providing many Unix utilities and a Unix look and feel, Cygwin allows source code designed for Unix-like operating systems to be compiled and run on Windows with minimal modification. Cygwin provides native integration of Windows-based applications. Thus it is possible to launch Windows applications from the Cygwin environment, as well as to use Cygwin tools and applications within the Windows operating context. Cygwin consists of two parts: a dynamic-link library (DLL) in the form of a C standard library that acts as a compatibility layer for the POSIX API. an extensive collection of software tools and applications that provide a Unix-like look and feel. Cygwin is free and open-source software, released under the GNU Lesser General Public License version 3. It was originally developed by Cygnus Solutions, which was later acquired by Red Hat, to port the Linux toolchain to Win32, including the GNU Compiler Suite. Rather than rewrite the tools to use the Win32 runtime environment, Cygwin implemented a POSIX-compatible environment in the form of a dynamic-link library (DLL).	2001-10-19T02:26:13Z	2023-12-30T05:10:40Z	[ "Template:Short description", "Template:Respell", "Template:Official website", "Template:Infobox software", "Template:As of", "Template:Annotated link", "Template:Cite mailing list", "Template:Wikibooks", "Template:FLOSS", "Template:IPAc-en", "Template:Citation needed", "Template:Cite web", "Template:Unix-Windows Interoperability", "Template:When", "Template:Reflist" ]	https://en.wikipedia.org/wiki/Cygwin
6,845	Corinth	Corinth (/ˈkɒrɪnθ/ KORR-inth; Greek: Κόρινθος, romanized: Kórinthos, Modern Greek pronunciation: [ˈkorinθos]) is the successor to an ancient city, and is a former municipality in Corinthia, Peloponnese, which is located in south-central Greece. Since the 2011 local government reform, it has been part of the municipality of Corinth, of which it is the seat and a municipal unit. It is the capital of Corinthia. It was founded as Nea Korinthos (Νέα Κόρινθος), or New Corinth, in 1858 after an earthquake destroyed the existing settlement of Corinth, which had developed in and around the site of ancient Corinth. Corinth derives its name from Ancient Corinth, a city-state of antiquity. The site was occupied from before 3000 BC. Historical references begin with the early 8th century BC, when Corinth began to develop as a commercial center. Between the 8th and 7th centuries, the Bacchiad family ruled Corinth. Cypselus overthrew the Bacchiad family, and between 657 and 550 BC, he and his son Periander ruled Corinth as the Tyrants. In about 550 BC, an oligarchical government seized power. This government allied with Sparta within the Peloponnesian League, and Corinth participated in the Persian Wars and Peloponnesian War as an ally of Sparta. After Sparta's victory in the Peloponnesian war, the two allies fell out with one another, and Corinth pursued an independent policy in the various wars of the early 4th century BC. After the Macedonian unification of Greece, the Acrocorinth was the seat of a Macedonian garrison until 243 BC, when the city joined the Achaean League. Nearly a century later, in 146 BC, Corinth was captured and was completely destroyed by the Roman army. As a newly rebuilt Roman colony in 44 BC, Corinth flourished and became the administrative capital of the Roman province of Achaea. An important earthquake touched Corinth and its region in 856, causing around 45000 deaths. In 1858, the old city, now known as Ancient Corinth (Αρχαία Κόρινθος, Archaia Korinthos), located three kilometres (two miles) southwest of the modern city, was totally destroyed by a magnitude 6.5 earthquake. New Corinth (Nea Korinthos) was then built to the north-east of it, on the coast of the Gulf of Corinth. In 1928, a magnitude 6.3 earthquake devastated the new city, which was then rebuilt on the same site. In 1933, there was a great fire, and the new city was rebuilt again. During the German occupation in World War II, the Germans operated a Dulag transit camp for British, Australian, New Zealander and Serbian prisoners of war and a forced labour camp in the town. Located about 78 kilometres (48 mi) west of Athens, Corinth is surrounded by the coastal townlets of (clockwise) Lechaio, Isthmia, Kechries, and the inland townlets of Examilia and the archaeological site and village of ancient Corinth. Natural features around the city include the narrow coastal plain of Vocha, the Corinthian Gulf, the Isthmus of Corinth cut by its canal, the Saronic Gulf, the Oneia Mountains, and the monolithic rock of Acrocorinth, where the medieval acropolis was built. According to the nearby weather station of Velo, operated by the Hellenic National Meteorological Service, Corinth has a hot-summer Mediterranean climate (Köppen climate classification: Csa), with hot, dry summers and cool, rainy winters. The hottest month is July with an average temperature of 28.7 °C (83.7 °F) while the coldest month is January with an average temperature of 9.1 °C (48.4 °F). Corinth receives about 463 mm of rainfall per year and has an average annual temperature of 18.1 °C (64.6 °F). The Municipality of Corinth (Δήμος Κορινθίων) had a population of 58,192 according to the 2011 census, the second most populous municipality in the Peloponnese Region after Kalamata. The municipal unit of Corinth had 38,132 inhabitants, of which Corinth itself had 30,176 inhabitants, placing it in third place behind Kalamata and Tripoli among the cities of the Peloponnese Region. The municipal unit of Corinth (Δημοτική ενότητα Κορινθίων) includes apart from Corinth proper the town of Archaia Korinthos (2,198 inhabitants in 2011), the town of Examilia (2,905 inhabitants), and the smaller settlements of Xylokeriza (1,316 inhabitants) and Solomos (817 inhabitants). The municipal unit has an area of 102.187 km. Corinth is a major industrial hub at a national level. The Corinth Refinery is one of the largest oil refining industrial complexes in Europe. Ceramic tiles, copper cables, gums, gypsum, leather, marble, meat products, medical equipment, mineral water and beverages, petroleum products, and salt are produced nearby. As of 2005, a period of Economic changes commenced as a large pipework complex, a textile factory and a meat packing facility diminished their operations. Corinth is a major road hub. The A7 toll motorway for Tripoli and Kalamata, (and Sparta via A71 toll), branches off the A8/European route E94 toll motorway from Athens at Corinth. Corinth is the main entry point to the Peloponnesian peninsula, the southernmost area of continental Greece. KTEL Korinthias provides intercity bus service in the peninsula and to Athens via the Isthmos station southeast of the city center. Local bus service is also available. The metre gauge railway from Athens and Pireaeus reached Corinth in 1884. This station closed to regular public transport in 2007. In 2005, two years prior, the city was connected to the Athens Suburban Railway, following the completion of the new Corinth railway station. The journey time from Athens to Corinth is about 55 minutes. The train station is 5 minutes by car from the city centre and parking is available for free. The port of Corinth, located north of the city centre and close to the northwest entrance of the Corinth Canal, at 37 56.0’ N / 22 56.0’ E, serves the local needs of industry and agriculture. It is mainly a cargo exporting facility. It is an artificial harbour (depth approximately 9 m (30 ft), protected by a concrete mole (length approximately 930 metres, width 100 metres, mole surface 93,000 m2). A new pier finished in the late 1980s doubled the capacity of the port. The reinforced mole protects anchored vessels from strong northern winds. Within the port operates a customs office facility and a Hellenic Coast Guard post. Sea traffic is limited to trade in the export of local produce, mainly citrus fruits, grapes, marble, aggregates and some domestic imports. The port operates as a contingency facility for general cargo ships, bulk carriers and ROROs, in case of strikes at Piraeus port. There was formerly a ferry link to Catania, Sicily and Genoa in Italy. The Corinth Canal, carrying ship traffic between the western Mediterranean Sea and the Aegean Sea, is about 4 km (2.5 mi) east of the city, cutting through the Isthmus of Corinth that connects the Peloponnesian peninsula to the Greek mainland, thus effectively making the former an island. The builders dug the canal through the Isthmus at sea level; no locks are employed. It is 6.4 km (4.0 mi) in length and only 21.3 metres (70 ft) wide at its base, making it impassable for most modern ships. It now has little economic importance. The canal was mooted in classical times and an abortive effort was made to build it in the 1st century AD. Julius Caesar and Caligula both considered digging the canal but died before starting the construction. The emperor Nero was the first to attempt to construct the canal. The Roman workforce responsible for the initial digging consisted of 6,000 Jewish prisoners of war. Modern construction started in 1882, after Greece gained independence from the Ottoman Empire, but was hampered by geological and financial problems that bankrupted the original builders. It was completed in 1893, but due to the canal's narrowness, navigational problems and periodic closures to repair landslips from its steep walls, it failed to attract the level of traffic anticipated by its operators. It is now used mainly for tourist traffic. The city's association football team is Korinthos F.C. (Π.Α.E. Κόρινθος), established in 1999 after the merger of Pankorinthian Football Club (Παγκορινθιακός) and Corinth Football Club (Κόρινθος). During the 2006–2007 season, the team played in the Greek Fourth Division's Regional Group 7. The team went undefeated that season and it earned the top spot. This granted the team a promotion to the Gamma Ethnikí (Third Division) for the 2007–2008 season. For the 2008–2009 season, Korinthos F.C. competed in the Gamma Ethniki (Third Division) southern grouping. Corinth is twinned with: Due to its ancient history and the presence of St. Paul the Apostle in Corinth some locations all over the world have been named Corinth.	[ { "paragraph_id": 0, "text": "Corinth (/ˈkɒrɪnθ/ KORR-inth; Greek: Κόρινθος, romanized: Kórinthos, Modern Greek pronunciation: [ˈkorinθos]) is the successor to an ancient city, and is a former municipality in Corinthia, Peloponnese, which is located in south-central Greece. Since the 2011 local government reform, it has been part of the municipality of Corinth, of which it is the seat and a municipal unit. It is the capital of Corinthia.", "title": "" }, { "paragraph_id": 1, "text": "It was founded as Nea Korinthos (Νέα Κόρινθος), or New Corinth, in 1858 after an earthquake destroyed the existing settlement of Corinth, which had developed in and around the site of ancient Corinth.", "title": "" }, { "paragraph_id": 2, "text": "Corinth derives its name from Ancient Corinth, a city-state of antiquity. The site was occupied from before 3000 BC.", "title": "History" }, { "paragraph_id": 3, "text": "Historical references begin with the early 8th century BC, when Corinth began to develop as a commercial center. Between the 8th and 7th centuries, the Bacchiad family ruled Corinth. Cypselus overthrew the Bacchiad family, and between 657 and 550 BC, he and his son Periander ruled Corinth as the Tyrants.", "title": "History" }, { "paragraph_id": 4, "text": "In about 550 BC, an oligarchical government seized power. This government allied with Sparta within the Peloponnesian League, and Corinth participated in the Persian Wars and Peloponnesian War as an ally of Sparta. After Sparta's victory in the Peloponnesian war, the two allies fell out with one another, and Corinth pursued an independent policy in the various wars of the early 4th century BC. After the Macedonian unification of Greece, the Acrocorinth was the seat of a Macedonian garrison until 243 BC, when the city joined the Achaean League.", "title": "History" }, { "paragraph_id": 5, "text": "Nearly a century later, in 146 BC, Corinth was captured and was completely destroyed by the Roman army.", "title": "History" }, { "paragraph_id": 6, "text": "As a newly rebuilt Roman colony in 44 BC, Corinth flourished and became the administrative capital of the Roman province of Achaea.", "title": "History" }, { "paragraph_id": 7, "text": "An important earthquake touched Corinth and its region in 856, causing around 45000 deaths.", "title": "History" }, { "paragraph_id": 8, "text": "In 1858, the old city, now known as Ancient Corinth (Αρχαία Κόρινθος, Archaia Korinthos), located three kilometres (two miles) southwest of the modern city, was totally destroyed by a magnitude 6.5 earthquake. New Corinth (Nea Korinthos) was then built to the north-east of it, on the coast of the Gulf of Corinth. In 1928, a magnitude 6.3 earthquake devastated the new city, which was then rebuilt on the same site. In 1933, there was a great fire, and the new city was rebuilt again.", "title": "History" }, { "paragraph_id": 9, "text": "During the German occupation in World War II, the Germans operated a Dulag transit camp for British, Australian, New Zealander and Serbian prisoners of war and a forced labour camp in the town.", "title": "History" }, { "paragraph_id": 10, "text": "Located about 78 kilometres (48 mi) west of Athens, Corinth is surrounded by the coastal townlets of (clockwise) Lechaio, Isthmia, Kechries, and the inland townlets of Examilia and the archaeological site and village of ancient Corinth. Natural features around the city include the narrow coastal plain of Vocha, the Corinthian Gulf, the Isthmus of Corinth cut by its canal, the Saronic Gulf, the Oneia Mountains, and the monolithic rock of Acrocorinth, where the medieval acropolis was built.", "title": "Geography" }, { "paragraph_id": 11, "text": "According to the nearby weather station of Velo, operated by the Hellenic National Meteorological Service, Corinth has a hot-summer Mediterranean climate (Köppen climate classification: Csa), with hot, dry summers and cool, rainy winters. The hottest month is July with an average temperature of 28.7 °C (83.7 °F) while the coldest month is January with an average temperature of 9.1 °C (48.4 °F). Corinth receives about 463 mm of rainfall per year and has an average annual temperature of 18.1 °C (64.6 °F).", "title": "Geography" }, { "paragraph_id": 12, "text": "The Municipality of Corinth (Δήμος Κορινθίων) had a population of 58,192 according to the 2011 census, the second most populous municipality in the Peloponnese Region after Kalamata. The municipal unit of Corinth had 38,132 inhabitants, of which Corinth itself had 30,176 inhabitants, placing it in third place behind Kalamata and Tripoli among the cities of the Peloponnese Region.", "title": "Demographics" }, { "paragraph_id": 13, "text": "The municipal unit of Corinth (Δημοτική ενότητα Κορινθίων) includes apart from Corinth proper the town of Archaia Korinthos (2,198 inhabitants in 2011), the town of Examilia (2,905 inhabitants), and the smaller settlements of Xylokeriza (1,316 inhabitants) and Solomos (817 inhabitants). The municipal unit has an area of 102.187 km.", "title": "Demographics" }, { "paragraph_id": 14, "text": "Corinth is a major industrial hub at a national level. The Corinth Refinery is one of the largest oil refining industrial complexes in Europe. Ceramic tiles, copper cables, gums, gypsum, leather, marble, meat products, medical equipment, mineral water and beverages, petroleum products, and salt are produced nearby. As of 2005, a period of Economic changes commenced as a large pipework complex, a textile factory and a meat packing facility diminished their operations.", "title": "Economy" }, { "paragraph_id": 15, "text": "Corinth is a major road hub. The A7 toll motorway for Tripoli and Kalamata, (and Sparta via A71 toll), branches off the A8/European route E94 toll motorway from Athens at Corinth. Corinth is the main entry point to the Peloponnesian peninsula, the southernmost area of continental Greece.", "title": "Transport" }, { "paragraph_id": 16, "text": "KTEL Korinthias provides intercity bus service in the peninsula and to Athens via the Isthmos station southeast of the city center. Local bus service is also available.", "title": "Transport" }, { "paragraph_id": 17, "text": "The metre gauge railway from Athens and Pireaeus reached Corinth in 1884. This station closed to regular public transport in 2007. In 2005, two years prior, the city was connected to the Athens Suburban Railway, following the completion of the new Corinth railway station. The journey time from Athens to Corinth is about 55 minutes. The train station is 5 minutes by car from the city centre and parking is available for free.", "title": "Transport" }, { "paragraph_id": 18, "text": "The port of Corinth, located north of the city centre and close to the northwest entrance of the Corinth Canal, at 37 56.0’ N / 22 56.0’ E, serves the local needs of industry and agriculture. It is mainly a cargo exporting facility.", "title": "Transport" }, { "paragraph_id": 19, "text": "It is an artificial harbour (depth approximately 9 m (30 ft), protected by a concrete mole (length approximately 930 metres, width 100 metres, mole surface 93,000 m2). A new pier finished in the late 1980s doubled the capacity of the port. The reinforced mole protects anchored vessels from strong northern winds.", "title": "Transport" }, { "paragraph_id": 20, "text": "Within the port operates a customs office facility and a Hellenic Coast Guard post. Sea traffic is limited to trade in the export of local produce, mainly citrus fruits, grapes, marble, aggregates and some domestic imports. The port operates as a contingency facility for general cargo ships, bulk carriers and ROROs, in case of strikes at Piraeus port.", "title": "Transport" }, { "paragraph_id": 21, "text": "There was formerly a ferry link to Catania, Sicily and Genoa in Italy.", "title": "Transport" }, { "paragraph_id": 22, "text": "The Corinth Canal, carrying ship traffic between the western Mediterranean Sea and the Aegean Sea, is about 4 km (2.5 mi) east of the city, cutting through the Isthmus of Corinth that connects the Peloponnesian peninsula to the Greek mainland, thus effectively making the former an island. The builders dug the canal through the Isthmus at sea level; no locks are employed. It is 6.4 km (4.0 mi) in length and only 21.3 metres (70 ft) wide at its base, making it impassable for most modern ships. It now has little economic importance.", "title": "Transport" }, { "paragraph_id": 23, "text": "The canal was mooted in classical times and an abortive effort was made to build it in the 1st century AD. Julius Caesar and Caligula both considered digging the canal but died before starting the construction. The emperor Nero was the first to attempt to construct the canal. The Roman workforce responsible for the initial digging consisted of 6,000 Jewish prisoners of war. Modern construction started in 1882, after Greece gained independence from the Ottoman Empire, but was hampered by geological and financial problems that bankrupted the original builders. It was completed in 1893, but due to the canal's narrowness, navigational problems and periodic closures to repair landslips from its steep walls, it failed to attract the level of traffic anticipated by its operators. It is now used mainly for tourist traffic.", "title": "Transport" }, { "paragraph_id": 24, "text": "The city's association football team is Korinthos F.C. (Π.Α.E. Κόρινθος), established in 1999 after the merger of Pankorinthian Football Club (Παγκορινθιακός) and Corinth Football Club (Κόρινθος). During the 2006–2007 season, the team played in the Greek Fourth Division's Regional Group 7. The team went undefeated that season and it earned the top spot. This granted the team a promotion to the Gamma Ethnikí (Third Division) for the 2007–2008 season. For the 2008–2009 season, Korinthos F.C. competed in the Gamma Ethniki (Third Division) southern grouping.", "title": "Sport" }, { "paragraph_id": 25, "text": "Corinth is twinned with:", "title": "Twin towns/sister cities" }, { "paragraph_id": 26, "text": "Due to its ancient history and the presence of St. Paul the Apostle in Corinth some locations all over the world have been named Corinth.", "title": "Other locations named after Corinth" } ]	Corinth is the successor to an ancient city, and is a former municipality in Corinthia, Peloponnese, which is located in south-central Greece. Since the 2011 local government reform, it has been part of the municipality of Corinth, of which it is the seat and a municipal unit. It is the capital of Corinthia. It was founded as Nea Korinthos, or New Corinth, in 1858 after an earthquake destroyed the existing settlement of Corinth, which had developed in and around the site of ancient Corinth.	2001-10-19T05:35:02Z	2023-12-14T18:44:53Z	[ "Template:Use dmy dates", "Template:Cite web", "Template:Cite book", "Template:Arvanites", "Template:Authority control", "Template:See also", "Template:Wikivoyage-inline", "Template:Infobox Greek Dimos", "Template:Further", "Template:Weather box", "Template:As of", "Template:Flagicon", "Template:More citations needed", "Template:Lang-el", "Template:IPA", "Template:Reflist", "Template:Cite news", "Template:Adjacent communities", "Template:Corinth div", "Template:Cvt", "Template:Convert", "Template:Historical populations", "Template:Main", "Template:In lang", "Template:IPAc-en", "Template:Commonscatinline", "Template:Short description", "Template:About", "Template:Respell", "Template:Lang", "Template:Cite journal", "Template:Webarchive" ]	https://en.wikipedia.org/wiki/Corinth
6,846	Colossae	37°47.205′N 29°15.603′E / 37.786750°N 29.260050°E / 37.786750; 29.260050 Colossae (/kəˈlɒsi/; Greek: Κολοσσαί) was an ancient city of Phrygia in Asia Minor, and one of the most celebrated cities of southern Anatolia (modern Turkey). The Epistle to the Colossians, an early Christian text which identifies its author as Paul the Apostle, is addressed to the church in Colossae. A significant city from the 5th century BC onwards, it had dwindled in importance by the time of Paul, but was notable for the existence of its local angel cult. It was part of the Roman and Byzantine province of Phrygia Pacatiana, before being destroyed in 1192/3 and its population relocating to nearby Chonae (Chonai, modern-day Honaz). Colossae was located in Phrygia, in Asia Minor. It was located 15 km (9.3 mi) southeast of Laodicea on the road through the Lycus Valley near the Lycus River at the foot of Mt. Cadmus, the highest mountain in Turkey's western Aegean Region, and between the cities Sardeis and Celaenae, and southeast of the ancient city of Hierapolis. At Colossae, Herodotus describes how, "the river Lycos falls into an opening of the earth and disappears from view, and then after an interval of about five furlongs it comes up to view again, and this river also flows into the Maiander." Despite a treacherously ambiguous cartography and history, Colossae has been clearly distinguished in modern research from nearby Chonai (Χῶναι), now called Honaz, with what remains of the buried ruins of Colossae ("the mound") lying 3 km (1.9 mi) to the north of Honaz. The medieval poet Manuel Philes, incorrectly, imagined that the name "Colossae" was connected to the Colossus of Rhodes. More recently, in an interpretation which ties Colossae to an Indo-European root that happens to be shared with the word kolossos, Jean-Pierre Vernant has connected the name to the idea of setting up a sacred space or shrine. Another proposal relates the name to the Greek kolazo, "to punish". Others believe the name derives from the manufacture of its famous dyed wool, or colossinus. The first mention of the city may be in a 17th-century BC Hittite inscription, which speaks of a city called Huwalušija, which some archeologists believe is a reference to early Colossae. The 5th-century geographer Herodotus first mentions Colossae by name and as a "great city in Phrygia", which accommodates the Persian king Xerxes I while en route to wage war against the Greeks in the Greco-Persian Wars– showing the city had already reached a certain level of wealth and size by this time. Writing in the 5th century BC, Xenophon refers to Colossae as "a populous city, wealthy and of considerable magnitude". It was famous for its wool trade. Strabo notes that the city drew great revenue from the flocks, and that the wool of Colossae gave its name to colour colossinus. In 396 BC, Colossae was the site of the execution of the rebellious Persian satrap Tissaphernes, who was lured there and slain by an agent of the party of Cyrus the Younger. Although during the Hellenistic period, the town was of some mercantile importance, by the 1st century it had dwindled greatly in size and significance. Paul's letter to the Colossians points to the existence of an early Christian community. The town was known for its fusion of religious influences (syncretism), which included Jewish, Gnostic, and pagan influences that, in the first century AD, were described as an angel-cult. This unorthodox cult venerated the archangel Michael, who is said to have caused a curative spring to gush from a fissure in the earth. The worship of angels showed analogies with the cult of pre-Christian pagan deities like Zeus. Saint Theodoret of Cyrrhus told about their surviving in Phrygia during the fourth century. The canonical biblical text Epistle to the Colossians is addressed to the Christian community in Colossae. The epistle has traditionally been attributed to Paul the Apostle due to its autobiographical salutation and style, but some modern critical scholars now believe it to be written by another author some time after Paul's death. It is believed that one aim of the letter was to address the challenges that the Colossian community faced in its context of the syncretistic Gnostic religions that were developing in Asia Minor. According to the Epistle to the Colossians, Epaphras seems to have been a person of some importance in the Christian community in Colossae, and tradition presents him as its first bishop. The epistle also seems to imply that Paul had never visited the city, because it only speaks of him having "heard" of the Colossians' faith, and in the Epistle to Philemon Paul tells Philemon of his hope to visit Colossae upon being freed from prison. Tradition also gives Philemon as the second bishop of the see. The city was decimated by an earthquake in the 60s AD, and was rebuilt independent of the support of Rome. The Apostolic Constitutions list Philemon as a bishop of Colossae. On the other hand, the Catholic Encyclopedia considers Philemon doubtful. The first historically documented bishop is Epiphanius, who was not personally at the Council of Chalcedon, but whose metropolitan bishop Nunechius of Laodicea, the capital of the Roman province of Phrygia Pacatiana, signed the acts on his behalf. The city's fame and renowned status continued into the Byzantine period, and in 858, it was distinguished as a Metropolitan See. The Byzantines also built the church of St. Michael in the vicinity of Colossae, one of the largest church buildings in the Middle East. Nevertheless, sources suggest that the town may have decreased in size or may even been completely abandoned due to Arab invasions in the seventh and eighth centuries, forcing the population to flee to resettle in the nearby city of Chonai (modern day Honaz). Colossae's famous church was destroyed in 1192/3 during the Byzantine civil wars. It was a suffragan diocese of Laodicea in Phyrigia Pacatiana but was replaced in the Byzantine period by the Chonae settlement on higher ground As of 2019, Colossae has never been excavated, as most archeological attention has been focused on nearby Laodicea and Hierapolis, though plans are reported for an Australian-led expedition to the site. The present site exhibits a biconical acropolis almost 100 feet (30 m) high, and encompasses an area of almost 22 acres (8.9 ha). On the eastern slope there sits a theater which probably seated around 5,000 people, suggesting a total population of 25,000–30,000 people. The theater was probably built during the Roman period, and may be near an agora that abuts the cardo maximus, or the city's main north-south road. Ceramic finds around the theater confirm the city's early occupation in the third and second millennia BC. Northeast of the tell, and most likely outside the city walls, a necropolis displays Hellenistic tombs with two main styles of burial: one with an antecedent room connected to an inner chamber, and tumuli, or underground chambers accessed by stairs leading to the entrance. Outside the tell, there are also remains of sections of columns that may have marked a processional way, or the cardo. Today, the remains of one column marks the location where locals believe a church once stood, possibly that of St. Michael. Near the Lycus River, there is evidence that water channels had been cut out of the rock with a complex of pipes and sluice gates to divert water for bathing and for agricultural and industrial purposes. The holiness and healing properties associated with the waters of Colossae during the Byzantine era continue to this day, particularly at a pool fed by the Lycus River at the Göz picnic grounds west of Colossae at the foot of Mt. Cadmus. Locals consider the water to be therapeutic. This article incorporates text from a publication now in the public domain: Easton, Matthew George (1897). "Colossae". Easton's Bible Dictionary (New and revised ed.). T. Nelson and Sons.	[ { "paragraph_id": 0, "text": "37°47.205′N 29°15.603′E / 37.786750°N 29.260050°E / 37.786750; 29.260050", "title": "" }, { "paragraph_id": 1, "text": "Colossae (/kəˈlɒsi/; Greek: Κολοσσαί) was an ancient city of Phrygia in Asia Minor, and one of the most celebrated cities of southern Anatolia (modern Turkey). The Epistle to the Colossians, an early Christian text which identifies its author as Paul the Apostle, is addressed to the church in Colossae. A significant city from the 5th century BC onwards, it had dwindled in importance by the time of Paul, but was notable for the existence of its local angel cult. It was part of the Roman and Byzantine province of Phrygia Pacatiana, before being destroyed in 1192/3 and its population relocating to nearby Chonae (Chonai, modern-day Honaz).", "title": "" }, { "paragraph_id": 2, "text": "Colossae was located in Phrygia, in Asia Minor. It was located 15 km (9.3 mi) southeast of Laodicea on the road through the Lycus Valley near the Lycus River at the foot of Mt. Cadmus, the highest mountain in Turkey's western Aegean Region, and between the cities Sardeis and Celaenae, and southeast of the ancient city of Hierapolis. At Colossae, Herodotus describes how, \"the river Lycos falls into an opening of the earth and disappears from view, and then after an interval of about five furlongs it comes up to view again, and this river also flows into the Maiander.\" Despite a treacherously ambiguous cartography and history, Colossae has been clearly distinguished in modern research from nearby Chonai (Χῶναι), now called Honaz, with what remains of the buried ruins of Colossae (\"the mound\") lying 3 km (1.9 mi) to the north of Honaz.", "title": "Location and geography" }, { "paragraph_id": 3, "text": "The medieval poet Manuel Philes, incorrectly, imagined that the name \"Colossae\" was connected to the Colossus of Rhodes. More recently, in an interpretation which ties Colossae to an Indo-European root that happens to be shared with the word kolossos, Jean-Pierre Vernant has connected the name to the idea of setting up a sacred space or shrine. Another proposal relates the name to the Greek kolazo, \"to punish\". Others believe the name derives from the manufacture of its famous dyed wool, or colossinus.", "title": "Origin and etymology of place name" }, { "paragraph_id": 4, "text": "The first mention of the city may be in a 17th-century BC Hittite inscription, which speaks of a city called Huwalušija, which some archeologists believe is a reference to early Colossae. The 5th-century geographer Herodotus first mentions Colossae by name and as a \"great city in Phrygia\", which accommodates the Persian king Xerxes I while en route to wage war against the Greeks in the Greco-Persian Wars– showing the city had already reached a certain level of wealth and size by this time. Writing in the 5th century BC, Xenophon refers to Colossae as \"a populous city, wealthy and of considerable magnitude\". It was famous for its wool trade. Strabo notes that the city drew great revenue from the flocks, and that the wool of Colossae gave its name to colour colossinus.", "title": "History" }, { "paragraph_id": 5, "text": "In 396 BC, Colossae was the site of the execution of the rebellious Persian satrap Tissaphernes, who was lured there and slain by an agent of the party of Cyrus the Younger.", "title": "History" }, { "paragraph_id": 6, "text": "Although during the Hellenistic period, the town was of some mercantile importance, by the 1st century it had dwindled greatly in size and significance. Paul's letter to the Colossians points to the existence of an early Christian community. The town was known for its fusion of religious influences (syncretism), which included Jewish, Gnostic, and pagan influences that, in the first century AD, were described as an angel-cult. This unorthodox cult venerated the archangel Michael, who is said to have caused a curative spring to gush from a fissure in the earth. The worship of angels showed analogies with the cult of pre-Christian pagan deities like Zeus. Saint Theodoret of Cyrrhus told about their surviving in Phrygia during the fourth century.", "title": "History" }, { "paragraph_id": 7, "text": "The canonical biblical text Epistle to the Colossians is addressed to the Christian community in Colossae. The epistle has traditionally been attributed to Paul the Apostle due to its autobiographical salutation and style, but some modern critical scholars now believe it to be written by another author some time after Paul's death. It is believed that one aim of the letter was to address the challenges that the Colossian community faced in its context of the syncretistic Gnostic religions that were developing in Asia Minor.", "title": "History" }, { "paragraph_id": 8, "text": "According to the Epistle to the Colossians, Epaphras seems to have been a person of some importance in the Christian community in Colossae, and tradition presents him as its first bishop. The epistle also seems to imply that Paul had never visited the city, because it only speaks of him having \"heard\" of the Colossians' faith, and in the Epistle to Philemon Paul tells Philemon of his hope to visit Colossae upon being freed from prison. Tradition also gives Philemon as the second bishop of the see.", "title": "History" }, { "paragraph_id": 9, "text": "The city was decimated by an earthquake in the 60s AD, and was rebuilt independent of the support of Rome.", "title": "History" }, { "paragraph_id": 10, "text": "The Apostolic Constitutions list Philemon as a bishop of Colossae. On the other hand, the Catholic Encyclopedia considers Philemon doubtful.", "title": "History" }, { "paragraph_id": 11, "text": "The first historically documented bishop is Epiphanius, who was not personally at the Council of Chalcedon, but whose metropolitan bishop Nunechius of Laodicea, the capital of the Roman province of Phrygia Pacatiana, signed the acts on his behalf.", "title": "History" }, { "paragraph_id": 12, "text": "The city's fame and renowned status continued into the Byzantine period, and in 858, it was distinguished as a Metropolitan See. The Byzantines also built the church of St. Michael in the vicinity of Colossae, one of the largest church buildings in the Middle East. Nevertheless, sources suggest that the town may have decreased in size or may even been completely abandoned due to Arab invasions in the seventh and eighth centuries, forcing the population to flee to resettle in the nearby city of Chonai (modern day Honaz).", "title": "History" }, { "paragraph_id": 13, "text": "Colossae's famous church was destroyed in 1192/3 during the Byzantine civil wars. It was a suffragan diocese of Laodicea in Phyrigia Pacatiana but was replaced in the Byzantine period by the Chonae settlement on higher ground", "title": "History" }, { "paragraph_id": 14, "text": "As of 2019, Colossae has never been excavated, as most archeological attention has been focused on nearby Laodicea and Hierapolis, though plans are reported for an Australian-led expedition to the site. The present site exhibits a biconical acropolis almost 100 feet (30 m) high, and encompasses an area of almost 22 acres (8.9 ha). On the eastern slope there sits a theater which probably seated around 5,000 people, suggesting a total population of 25,000–30,000 people. The theater was probably built during the Roman period, and may be near an agora that abuts the cardo maximus, or the city's main north-south road. Ceramic finds around the theater confirm the city's early occupation in the third and second millennia BC. Northeast of the tell, and most likely outside the city walls, a necropolis displays Hellenistic tombs with two main styles of burial: one with an antecedent room connected to an inner chamber, and tumuli, or underground chambers accessed by stairs leading to the entrance. Outside the tell, there are also remains of sections of columns that may have marked a processional way, or the cardo. Today, the remains of one column marks the location where locals believe a church once stood, possibly that of St. Michael. Near the Lycus River, there is evidence that water channels had been cut out of the rock with a complex of pipes and sluice gates to divert water for bathing and for agricultural and industrial purposes.", "title": "History" }, { "paragraph_id": 15, "text": "The holiness and healing properties associated with the waters of Colossae during the Byzantine era continue to this day, particularly at a pool fed by the Lycus River at the Göz picnic grounds west of Colossae at the foot of Mt. Cadmus. Locals consider the water to be therapeutic.", "title": "History" }, { "paragraph_id": 16, "text": "This article incorporates text from a publication now in the public domain: Easton, Matthew George (1897). \"Colossae\". Easton's Bible Dictionary (New and revised ed.). T. Nelson and Sons.", "title": "Notes and references" }, { "paragraph_id": 17, "text": "", "title": "External links" } ]	Colossae was an ancient city of Phrygia in Asia Minor, and one of the most celebrated cities of southern Anatolia. The Epistle to the Colossians, an early Christian text which identifies its author as Paul the Apostle, is addressed to the church in Colossae. A significant city from the 5th century BC onwards, it had dwindled in importance by the time of Paul, but was notable for the existence of its local angel cult. It was part of the Roman and Byzantine province of Phrygia Pacatiana, before being destroyed in 1192/3 and its population relocating to nearby Chonae.	2002-02-25T15:43:11Z	2023-08-14T08:55:49Z	[ "Template:Use dmy dates", "Template:Coord", "Template:Cite journal", "Template:EBD", "Template:Cite web", "Template:Citation", "Template:Bibleverse", "Template:Update inline", "Template:IPAc-en", "Template:When", "Template:Citation needed", "Template:Cite book", "Template:Ancient settlements in Turkey", "Template:Multiple issues", "Template:Convert", "Template:Reflist", "Template:Expand section", "Template:Secondary source needed", "Template:Cite EB1911", "Template:Bibleverse-nb", "Template:Authority control", "Template:Short description", "Template:Lang-grc-gre", "Template:Lang" ]	https://en.wikipedia.org/wiki/Colossae
6,848	Charge of the Goddess	The Charge of the Goddess (or Charge of the Star Goddess) is an inspirational text often used in the neopagan religion of Wicca. The Charge of the Goddess is recited during most rituals in which the Wiccan priest/priestess is expected to represent, and/or embody, the Goddess within the sacred circle, and is often spoken by the High Priest/Priestess after the ritual of Drawing Down the Moon. The Charge is the promise of the Goddess (who is embodied by the high priestess) to all witches that she will teach and guide them. It has been called "perhaps the most important single theological document in the neo-Pagan movement". It is used not only in Wicca, but as part of the foundational documents of the Reclaiming tradition of witchcraft co-founded by Starhawk. Several versions of the Charge exist, though they all have the same basic premise, that of a set of instructions given by the Great Goddess to her worshippers. The earliest version is that compiled by Gerald Gardner. This version, titled "Leviter Veslis" or "Lift Up the Veil", includes material paraphrased from works by Aleister Crowley, primarily from Liber AL (The Book of the Law, particularly from Ch 1, spoken by Nuit, the Star Goddess), and from Liber LXV (The Book of the Heart Girt with a Serpent) and from Crowley's essay "The Law of Liberty", thus linking modern Wicca to the cosmology and revelations of Thelema. It has been shown that Gerald Gardner's book collection included a copy of Crowley's The Blue Equinox (1919) which includes all of the Crowley quotations transferred by Gardner to the Charge of the Goddess. There are also two versions written by Doreen Valiente in the mid-1950s, after her 1953 Wiccan initiation. The first was a poetic paraphrase which eliminated almost all the material derived from Leland and Crowley. The second was a prose version which is contained within the traditional Gardnerian Book of Shadows and more closely resembles Gardner's "Leviter Veslis" version of 1949. Several different versions of a Wiccan Charge of the God have since been created to mirror and accompany the Charge of the Goddess. The opening paragraph names a collection of goddesses, some derived from Greek or Roman mythology, others from Celtic or Arthurian legends, affirming a belief that these various figures represent a single Great Mother: Listen to the words of the Great Mother, who was of old also called Artemis; Astarte; Diana; Melusine; Aphrodite; Cerridwen; Dana; Arianrhod; Isis; Bride; and by many other names. This theme echoes the ancient Roman belief that the Goddess Isis was known by ten thousand names and also that the Goddess still worshipped today by Wiccans and other neopagans is known under many guises but is in fact one universal divinity. The second paragraph is largely derived and paraphrased from the words that Aradia, the messianic daughter of Diana, speaks to her followers in Charles Godfrey Leland's 1899 book Aradia, or the Gospel of the Witches (London: David Nutt; various reprints). The third paragraph is largely written by Doreen Valiente, with a significant content of phrases loosely from The Book of the Law and The Book of the Heart Girt with the Serpent by Aleister Crowley. The charge affirms that all acts of love and pleasure are sacred to the Goddess, e.g.: Let my worship be within the heart that rejoiceth, for behold: all acts of love and pleasure are my rituals. And therefore let there be beauty and strength, power and compassion, honour and humility, mirth and reverence within you. In book eleven, chapter 47 of Apuleius's The Golden Ass, Isis delivers what Ceisiwr Serith calls "essentially a charge of a goddess". This is rather different from the modern version known in Wicca, though they have the same premise, that of the rules given by a great Mother Goddess to her faithful. The Charge of the Goddess is also known under the title Leviter Veslis. This has been identified by the historian Ronald Hutton, cited in an article by Roger Dearnsley "The Influence of Aleister Crowley on Ye Bok of Ye Art Magical, as a piece of medieval ecclesiastical Latin used to mean "lifting the veil." However, Hutton's interpretation does not reflect the Latin grammar as it currently stands. It may represent Gardner's attempt to write Levetur Velis, which has the literal meaning of "Let the veil be lifted." This expression would, by coincidence or design, grammatically echo the famous fiat lux (Gen. 1:3) of the Latin Vulgate. The earliest known Wiccan version is found in a document dating from the late 1940s, Gerald Gardner's ritual notebook titled Ye Bok of Ye Art Magical. The oldest identifiable source contained in this version is the final line, which is traceable to the 17th-century Centrum Naturae Concentratum of Alipili (or Ali Puli). This version also draws extensively from Charles Godfrey Leland's Aradia, or the Gospel of the Witches (1899) and other modern sources, particularly from the works of Aleister Crowley. It is believed to have been compiled by Gerald Gardner or possibly another member of the New Forest coven. Gardner intended his version to be a theological statement justifying the Gardnerian sequence of initiations. Like the Charge found in Freemasonry, where the charge is a set of instructions read to a candidate standing in a temple, the Charge of the Goddess was intended to be read immediately before an initiation. Valiente felt that the influence of Crowley on the Charge was too obvious, and she did not want "the Craft" (a common term for Wicca) associated with Crowley. Gardner invited her to rewrite the Charge. She proceeded to do so, her first version being into verse. The initial verse version by Doreen Valiente consisted of eight verses, the second of which was: Bow before My spirit bright Aphrodite, Arianrhod Lover of the Hornéd God Queen of witchery and night Valiente was unhappy with this version, saying that "people seemed to have some difficulty with this, because of the various goddess-names which they found hard to pronounce", and so she rewrote it as a prose version, much of which differs from her initial version, and is more akin to Gardner's version. This prose version has since been modified and reproduced widely by other authors.	[ { "paragraph_id": 0, "text": "The Charge of the Goddess (or Charge of the Star Goddess) is an inspirational text often used in the neopagan religion of Wicca. The Charge of the Goddess is recited during most rituals in which the Wiccan priest/priestess is expected to represent, and/or embody, the Goddess within the sacred circle, and is often spoken by the High Priest/Priestess after the ritual of Drawing Down the Moon.", "title": "" }, { "paragraph_id": 1, "text": "The Charge is the promise of the Goddess (who is embodied by the high priestess) to all witches that she will teach and guide them. It has been called \"perhaps the most important single theological document in the neo-Pagan movement\". It is used not only in Wicca, but as part of the foundational documents of the Reclaiming tradition of witchcraft co-founded by Starhawk.", "title": "" }, { "paragraph_id": 2, "text": "Several versions of the Charge exist, though they all have the same basic premise, that of a set of instructions given by the Great Goddess to her worshippers. The earliest version is that compiled by Gerald Gardner. This version, titled \"Leviter Veslis\" or \"Lift Up the Veil\", includes material paraphrased from works by Aleister Crowley, primarily from Liber AL (The Book of the Law, particularly from Ch 1, spoken by Nuit, the Star Goddess), and from Liber LXV (The Book of the Heart Girt with a Serpent) and from Crowley's essay \"The Law of Liberty\", thus linking modern Wicca to the cosmology and revelations of Thelema. It has been shown that Gerald Gardner's book collection included a copy of Crowley's The Blue Equinox (1919) which includes all of the Crowley quotations transferred by Gardner to the Charge of the Goddess.", "title": "" }, { "paragraph_id": 3, "text": "There are also two versions written by Doreen Valiente in the mid-1950s, after her 1953 Wiccan initiation. The first was a poetic paraphrase which eliminated almost all the material derived from Leland and Crowley. The second was a prose version which is contained within the traditional Gardnerian Book of Shadows and more closely resembles Gardner's \"Leviter Veslis\" version of 1949.", "title": "" }, { "paragraph_id": 4, "text": "Several different versions of a Wiccan Charge of the God have since been created to mirror and accompany the Charge of the Goddess.", "title": "" }, { "paragraph_id": 5, "text": "The opening paragraph names a collection of goddesses, some derived from Greek or Roman mythology, others from Celtic or Arthurian legends, affirming a belief that these various figures represent a single Great Mother:", "title": "Themes" }, { "paragraph_id": 6, "text": "Listen to the words of the Great Mother, who was of old also called Artemis; Astarte; Diana; Melusine; Aphrodite; Cerridwen; Dana; Arianrhod; Isis; Bride; and by many other names.", "title": "Themes" }, { "paragraph_id": 7, "text": "This theme echoes the ancient Roman belief that the Goddess Isis was known by ten thousand names and also that the Goddess still worshipped today by Wiccans and other neopagans is known under many guises but is in fact one universal divinity.", "title": "Themes" }, { "paragraph_id": 8, "text": "The second paragraph is largely derived and paraphrased from the words that Aradia, the messianic daughter of Diana, speaks to her followers in Charles Godfrey Leland's 1899 book Aradia, or the Gospel of the Witches (London: David Nutt; various reprints). The third paragraph is largely written by Doreen Valiente, with a significant content of phrases loosely from The Book of the Law and The Book of the Heart Girt with the Serpent by Aleister Crowley.", "title": "Themes" }, { "paragraph_id": 9, "text": "The charge affirms that all acts of love and pleasure are sacred to the Goddess, e.g.:", "title": "Themes" }, { "paragraph_id": 10, "text": "Let my worship be within the heart that rejoiceth, for behold: all acts of love and pleasure are my rituals. And therefore let there be beauty and strength, power and compassion, honour and humility, mirth and reverence within you.", "title": "Themes" }, { "paragraph_id": 11, "text": "In book eleven, chapter 47 of Apuleius's The Golden Ass, Isis delivers what Ceisiwr Serith calls \"essentially a charge of a goddess\". This is rather different from the modern version known in Wicca, though they have the same premise, that of the rules given by a great Mother Goddess to her faithful.", "title": "History" }, { "paragraph_id": 12, "text": "The Charge of the Goddess is also known under the title Leviter Veslis. This has been identified by the historian Ronald Hutton, cited in an article by Roger Dearnsley \"The Influence of Aleister Crowley on Ye Bok of Ye Art Magical, as a piece of medieval ecclesiastical Latin used to mean \"lifting the veil.\" However, Hutton's interpretation does not reflect the Latin grammar as it currently stands. It may represent Gardner's attempt to write Levetur Velis, which has the literal meaning of \"Let the veil be lifted.\" This expression would, by coincidence or design, grammatically echo the famous fiat lux (Gen. 1:3) of the Latin Vulgate.", "title": "History" }, { "paragraph_id": 13, "text": "The earliest known Wiccan version is found in a document dating from the late 1940s, Gerald Gardner's ritual notebook titled Ye Bok of Ye Art Magical. The oldest identifiable source contained in this version is the final line, which is traceable to the 17th-century Centrum Naturae Concentratum of Alipili (or Ali Puli). This version also draws extensively from Charles Godfrey Leland's Aradia, or the Gospel of the Witches (1899) and other modern sources, particularly from the works of Aleister Crowley.", "title": "History" }, { "paragraph_id": 14, "text": "It is believed to have been compiled by Gerald Gardner or possibly another member of the New Forest coven. Gardner intended his version to be a theological statement justifying the Gardnerian sequence of initiations. Like the Charge found in Freemasonry, where the charge is a set of instructions read to a candidate standing in a temple, the Charge of the Goddess was intended to be read immediately before an initiation.", "title": "History" }, { "paragraph_id": 15, "text": "Valiente felt that the influence of Crowley on the Charge was too obvious, and she did not want \"the Craft\" (a common term for Wicca) associated with Crowley. Gardner invited her to rewrite the Charge. She proceeded to do so, her first version being into verse.", "title": "History" }, { "paragraph_id": 16, "text": "The initial verse version by Doreen Valiente consisted of eight verses, the second of which was:", "title": "History" }, { "paragraph_id": 17, "text": "Bow before My spirit bright Aphrodite, Arianrhod Lover of the Hornéd God Queen of witchery and night", "title": "History" }, { "paragraph_id": 18, "text": "Valiente was unhappy with this version, saying that \"people seemed to have some difficulty with this, because of the various goddess-names which they found hard to pronounce\", and so she rewrote it as a prose version, much of which differs from her initial version, and is more akin to Gardner's version. This prose version has since been modified and reproduced widely by other authors.", "title": "History" } ]	The Charge of the Goddess is an inspirational text often used in the neopagan religion of Wicca. The Charge of the Goddess is recited during most rituals in which the Wiccan priest/priestess is expected to represent, and/or embody, the Goddess within the sacred circle, and is often spoken by the High Priest/Priestess after the ritual of Drawing Down the Moon. The Charge is the promise of the Goddess to all witches that she will teach and guide them. It has been called "perhaps the most important single theological document in the neo-Pagan movement". It is used not only in Wicca, but as part of the foundational documents of the Reclaiming tradition of witchcraft co-founded by Starhawk. Several versions of the Charge exist, though they all have the same basic premise, that of a set of instructions given by the Great Goddess to her worshippers. The earliest version is that compiled by Gerald Gardner. This version, titled "Leviter Veslis" or "Lift Up the Veil", includes material paraphrased from works by Aleister Crowley, primarily from Liber AL, and from Liber LXV and from Crowley's essay "The Law of Liberty", thus linking modern Wicca to the cosmology and revelations of Thelema. It has been shown that Gerald Gardner's book collection included a copy of Crowley's The Blue Equinox (1919) which includes all of the Crowley quotations transferred by Gardner to the Charge of the Goddess. There are also two versions written by Doreen Valiente in the mid-1950s, after her 1953 Wiccan initiation. The first was a poetic paraphrase which eliminated almost all the material derived from Leland and Crowley. The second was a prose version which is contained within the traditional Gardnerian Book of Shadows and more closely resembles Gardner's "Leviter Veslis" version of 1949. Several different versions of a Wiccan Charge of the God have since been created to mirror and accompany the Charge of the Goddess.		2022-11-14T07:18:35Z	[ "Template:Poemquote", "Template:Reflist", "Template:Cite book", "Template:ISBN", "Template:WiccaandWitchcraft", "Template:Short description", "Template:Blockquote", "Template:Cite news", "Template:Cite web" ]	https://en.wikipedia.org/wiki/Charge_of_the_Goddess
6,849	Cy Young	Denton True "Cy" Young (March 29, 1867 – November 4, 1955) was an American Major League Baseball (MLB) pitcher. Born in Gilmore, Ohio, he worked on his family's farm as a youth before starting his professional baseball career. Young entered the major leagues in 1890 with the National League's Cleveland Spiders and pitched for them until 1898. He was then transferred to the St. Louis Cardinals franchise. In 1901, Young jumped to the American League and played for the Boston Red Sox franchise until 1908, helping them win the 1903 World Series. He finished his career with the Cleveland Naps and Boston Rustlers, retiring in 1911. Young was one of the hardest-throwing pitchers in the game early in his career. After his speed diminished, he relied more on his control and remained effective into his forties. By the time Young retired, he had established numerous pitching records, some of which have stood for over a century. He holds MLB records for the most career wins, with 511, along with most career losses, innings pitched, games started, and complete games. He led his league in wins during five seasons and pitched three no-hitters, including a perfect game in 1904. Young was elected to the National Baseball Hall of Fame in 1937. He is often regarded as one of the greatest pitchers of all time, as well as a pioneer of modern pitching. In 1956, one year after his death, the Cy Young Award was created to annually honor the best pitcher in the Major Leagues (later each League) of the previous season, cementing his name as synonymous with excellence in pitching. Cy Young was the oldest child born to Nancy (Mottmiller) and McKinzie Young, Jr., and was christened Denton True Young. He was of part German descent. The couple had four more children: Jesse Carlton, Alonzo, Ella, and Anthony. When the couple married, McKinzie's father gave him the 54 acres (220,000 m) of farm land he owned. Young was born in Gilmore, a tiny farming community located in Washington Township, Tuscarawas County, Ohio. He was raised on one of the local farms and went by the name Dent Young in his early years. Young was also known as "Farmer Young" and "Farmboy Young". Young stopped his formal education after he completed the sixth grade so he could help out on the family's farm. In 1885, Young moved with his father to Nebraska, and in the summer of 1887, they returned to Gilmore. Young played for many amateur baseball leagues during his youth, including a semi-professional Carrollton team in 1888. Young pitched and played second base. The first box score known containing the name Young came from that season. In that game, Young played first base and had three hits in three at-bats. After the season, Young received an offer to play for the minor league Canton team, which started Young's professional career. Young began his professional career in 1890 with the Canton, Ohio based Canton Nadjys, team of the Tri-State League, a professional minor league. During his tryout, Young impressed the scouts, recalling years later, "I almost tore the boards off the grandstand with my fast ball." Cy Young's nickname came from the fences that he had destroyed using his fastball. The fences looked like a cyclone had hit them. Reporters later shortened the name to "Cy", which became the nickname Young used for the rest of his life. During his one year with Canton, he was 15-15. Franchises in the National League, the major professional baseball league at the time, wanted the best players available to them. Therefore, in 1890, Young signed with the Cleveland Spiders, a team which had moved from the American Association to the National League the previous year. On August 6, 1890, Young's major league debut, he pitched a three-hit 8–1 victory over the Chicago Colts. While Young was with the Spiders, Chief Zimmer was his catcher more often than any other player. Bill James, a baseball statistician, estimated that Zimmer caught Young in more games than any other battery in baseball history. Early on, Young established himself as one of the harder-throwing pitchers in the game. Bill James wrote that Zimmer often put a piece of beefsteak inside his baseball glove to protect his catching hand from Young's fastball. In the absence of radar guns, however, it is impossible to say just how hard Young actually threw. Young continued to perform at a high level during the 1890 season. On the last day of the season, Young won both games of a doubleheader. In the first weeks of Young's career, Cap Anson, the player-manager of the Chicago Colts spotted Young's ability. Anson told Spiders manager Gus Schmelz, "He's too green to do your club much good, but I believe if I taught him what I know, I might make a pitcher out of him in a couple of years. He's not worth it now, but I'm willing to give you $1,000 ($32,570 today) for him." Schmelz replied, "Cap, you can keep your thousand and we'll keep the rube." Two years after Young's debut, the National League moved the pitcher's position back by 5 feet (1.5 m). Since 1881, pitchers had pitched within a "box" whose front line was 50 feet (15 m) from home base, and since 1887 they had been compelled to toe the back line of the box when delivering the ball. The back line was 55 feet 6 inches (16.92 m) away from home. In 1893, 5 feet (1.5 m) was added to the back line, yielding the modern pitching distance of 60 feet 6 inches (18.44 m). In the book The Neyer/James Guide to Pitchers, sports journalist Rob Neyer wrote that the speed with which pitchers like Cy Young, Amos Rusie, and Jouett Meekin threw was the impetus that caused the move. The 1892 regular season was a success for Young, who led the National League in wins (36), ERA (1.93), and shutouts (9). Just as many contemporary Minor League Baseball leagues operate today, the National League was using a split season format during the 1892 season. The Boston Beaneaters won the first-half and the Spiders won the second-half, with a best-of-nine series determining the league champion. Despite the Spiders' second-half run, the Beaneaters swept the series, five games to none. Young pitched three complete games: he lost two and one ended in a scoreless tie. The Spiders faced the Baltimore Orioles in the Temple Cup, a precursor to the World Series, in 1895. Young won three games in the series and Cleveland won the Cup, four games to one. It was around this time that Young added what he called a "slow ball" to his pitching repertoire to reduce stress on his arm. The pitch today is called a changeup. In 1896, Young lost a no-hitter with two outs in the ninth inning when Ed Delahanty of the Philadelphia Phillies hit a single. On September 18, 1897, Young pitched the first no-hitter of his career in a game against the Cincinnati Reds. Although Young did not walk a batter, the Spiders committed four errors while on defense. One of the errors had originally been ruled a hit, but the Cleveland third baseman sent a note to the press box after the eighth inning, saying he had made an error, and the ruling was changed. Young later said that, despite his teammate's gesture, he considered the game to be a one-hitter. Prior to the 1899 season, Frank Robison, the Spiders owner, bought the St. Louis Browns, thus owning two clubs simultaneously. The Browns were renamed the "Perfectos", and restocked with Cleveland talent. Just weeks before the season opener, most of the better Spiders players were transferred to St. Louis, including three future Hall of Famers: Young, Jesse Burkett, and Bobby Wallace. The roster maneuvers failed to create a powerhouse Perfectos team, as St. Louis finished fifth in both 1899 and 1900. Meanwhile, the depleted Spiders lost 134 games, the most in MLB history, before folding. Young spent two years with St. Louis, which is where he found his favorite catcher, Lou Criger. The two men were teammates for a decade. In 1901, the rival American League declared major league status and set about raiding National League rosters. Young left St. Louis and joined the American League's Boston Americans for a $3,500 contract ($123,116 today). Young would remain with the Boston team until 1909. In his first year in the American League, Young was dominant. Pitching to Criger, who had also jumped to Boston, Young led the league in wins, strikeouts, and ERA, thus earning the colloquial AL Triple Crown for pitchers. Young won almost 42% of his team's games in 1901, accounting for 33 of his team's 79 wins. In February 1902, before the start of the baseball season, Young served as a pitching coach at Harvard University. The sixth-grade graduate instructing Harvard students delighted Boston newspapers. The following year, Young coached at Mercer University during the spring. The team went on to win the Georgia state championship in 1903, 1904, and 1905. The Boston Americans played the Pittsburgh Pirates in the first modern World Series in 1903. Young, who started Game One against the visiting Pirates, thus threw the first pitch in modern World Series history. The Pirates scored four runs in that first inning, and Young lost the game. Young performed better in subsequent games, winning his next two starts. He also drove in three runs in Game Five. Young finished the series with a 2–1 record and a 1.85 ERA in four appearances, and Boston defeated Pittsburgh, five games to three. After one-hitting Boston on May 2, 1904, Philadelphia Athletics pitcher Rube Waddell taunted Young to face him so that he could repeat his performance against Boston's ace. Three days later, Young pitched a perfect game against Waddell and the Athletics. It was the first perfect game in American League history. Waddell was the 27th and last batter, and when he flied out, Young shouted, "How do you like that, you hayseed?" Waddell had picked an inauspicious time to issue his challenge. Young's perfect game was the centerpiece of a pitching streak. Young set major league records for the most consecutive scoreless innings pitched and the most consecutive innings without allowing a hit; the latter record still stands at 25.1 innings, or 76 hitless batters. Even after he allowed a hit, Young's scoreless streak reached a then-record 45 shutout innings. Before Young, only two pitchers had thrown perfect games. This occurred in 1880, when Lee Richmond and John Montgomery Ward pitched perfect games within five days of each other, although under somewhat different rules: the front edge of the pitcher's box was only 45 feet (14 m) from home base (the modern release point is about 10 feet (3.0 m) farther away); walks required eight balls; and pitchers were obliged to throw side-armed. Young's perfect game was the first under the modern rules established in 1893. One year later, on July 4, 1905, Rube Waddell beat Young and the Americans, 4–2, in a 20-inning matchup. Young pitched 13 consecutive scoreless innings before he gave up a pair of unearned runs in the final inning. Young did not walk a batter and was later quoted: "For my part, I think it was the greatest game of ball I ever took part in." In 1907, Young and Waddell faced off in a scoreless 13-inning tie. In 1908, Young pitched the third no-hitter of his career. Three months past his 41st birthday, he was the oldest pitcher to record a no-hitter, a record which would stand 82 years until 43-year-old Nolan Ryan broke it. Only a walk kept Young from his second perfect game. After that runner was caught stealing, no other batter reached base. At the time, Young was the second-oldest player in either league. In another game one month before his no-hitter, he allowed just one single while facing 28 batters. On August 13, 1908, the league celebrated "Cy Young Day". No American League games were played on that day, and a group of All-Stars from the league's other teams gathered in Boston to play against Young and the Red Sox. When the season ended, he posted a 1.26 ERA, which gave him not only the lowest in his career, but also a major league record of being the oldest pitcher with 150+ innings and an ERA under 1.50. Young was traded back to Cleveland, the place where he played over half his career, before the 1909 season, to the Cleveland Naps of the American League. The following season, 1910, he won his 500th career game on July 19 against Washington. He split 1911, his final year, between the Naps and the Boston Rustlers. On September 22, 1911, Young shut out the Pittsburgh Pirates, 1–0, for his last career victory. In his final start two weeks later, the last eight batters of Young's career combined to hit a triple, four singles, and three doubles. By the time of his retirement, Young's control had faltered. He had also gained weight. In two of his last three years, he was the oldest player in the league. Young established numerous pitching records, some of which have stood for over a century. Young compiled 511 wins, which is the most in major league history and 94 ahead of Walter Johnson, second on the list. At the time of Young's retirement, Pud Galvin had the second most career wins with 364. In addition to wins, Young still holds the major league records for most career innings pitched (7,356), most career games started (815), and most complete games (749). He also retired with 316 losses, the most in MLB history. Young's career record for strikeouts was broken by Johnson in 1921. Young's 76 career shutouts are fourth all-time. Y is for YoungThe magnificent Cy;People batted against him,But I never knew why. — Ogden Nash, Sport magazine (January 1949) Young led his league in wins five times (1892, 1895, and 1901–1903), finishing second twice. His career high was 36 in 1892. He won at least 30 games in a season five times. He had 15 seasons with 20 or more wins, two more than Christy Mathewson and Warren Spahn. Young won two ERA titles during his career, in 1892 (1.93) and in 1901 (1.62), and was three times the runner-up. Young's earned run average was below 2.00 six times, but it was not uncommon during the dead-ball era. Although Young threw over 400 innings in each of his first four full seasons, he did not lead his league until 1902. He had 40 or more complete games nine times. Young also led his league in strikeouts twice (140 in 1896 and 158 in 1901), and in shutouts seven times. Young led his league in fewest walks per nine innings fourteen times and finished second once. Only twice in his 22-year career did he finish lower than 5th in the category. Although the WHIP ratio was not calculated until well after Young's death, he was retroactively league leader seven times and was second or third another seven times. Young is tied with Roger Clemens for the most career wins by a Boston Red Sox pitcher: they each won 192 games while with the franchise. In addition, Young pitched three no-hitters, including the third perfect game in baseball history, first in baseball's "modern era". Young also was an above average hitting pitcher. He posted a .210 batting average (623-for-2960) with 325 runs, 290 RBIs, 18 home runs, and 81 walks. From 1891 through 1905, he drove in 10 or more runs for 15 straight seasons, with a high of 28 in 1896. Particularly after his fastball slowed, Young relied upon his control. He was once quoted as saying, "Some may have thought it was essential to know how to curve a ball before anything else. Experience, to my mind, teaches to the contrary. Any young player who has good control will become a successful curve pitcher long before the pitcher who is endeavoring to master both curves and control at the same time. The curve is merely an accessory to control." In addition to his exceptional control, Young was also a workhorse who avoided injury, owing partly to his ability to pitch in different arm positions (overhand, three-quarters, sidearm and even submarine). For 19 consecutive years, from 1891 through 1909, Young was in his league's top 10 for innings pitched; in 14 of the seasons, he was in the top five. Not until 1900, a decade into his career, did Young pitch two consecutive incomplete games. By habit, Young restricted his practice throws in spring training. "I figured the old arm had just so many throws in it," said Young, "and there wasn't any use wasting them." He once described his approach before a game: I never warmed up ten, fifteen minutes before a game like most pitchers do. I'd loosen up, three, four minutes. Five at the outside. And I never went to the bullpen. Oh, I'd relieve all right, plenty of times, but I went right from the bench to the box, and I'd take a few warm-up pitches and be ready. Then I had good control. I aimed to make the batter hit the ball, and I threw as few pitches as possible. That's why I was able to work every other day. * Stepped down to a player only role. In 1910, it was reported that Young became a vegetarian, after baseball and working on his farm. In 1913, he served as manager of the Cleveland Green Sox of the Federal League, which was at the time an outlaw league. However, he never worked in baseball after that. Young was a Freemason. In 1916, he ran for county treasurer in Tuscarawas County, Ohio. Young's wife, Roba, whom he had known since childhood, died in 1933. After she died, Young tried several jobs, and eventually moved in with friends John and Ruth Benedum and did odd jobs for them. Young took part in many baseball events after his retirement. In 1937, 26 years after he retired from baseball, Young was inducted into the Baseball Hall of Fame. He was among the first to donate mementos to the Hall. By 1940, Young's only source of income was stock dividends of $300 per year ($6,267 today). On November 4, 1955, Young died on the Benedums' farm at the age of 88. He was buried in Peoli, Ohio. Young's career is seen as a bridge from baseball's earliest days to its modern era; he pitched against stars such as Cap Anson, already an established player when the National League was first formed in 1876, as well as against Eddie Collins, who played until 1930. When Young's career began, pitchers delivered the baseball underhand and fouls were not counted as strikes. The pitcher's mound was not moved back to its present position of 60 feet 6 inches (18.44 m) until Young's fourth season; he did not wear a glove until his sixth season. Young was elected to the National Baseball Hall of Fame in 1937. In 1956, about one year after Young's death, the Cy Young Award was created to honor the best pitcher in Major League Baseball for each season. The first award was given to Brooklyn's Don Newcombe. Originally, it was a single award covering all of baseball. The honor was divided into two Cy Young Awards in 1967, one for each league. On September 23, 1993, a statue dedicated to him was unveiled by Northeastern University on the site of the Red Sox's original stadium, the Huntington Avenue Grounds. It was there that Young had pitched the first game of the 1903 World Series, as well as the first perfect game in the modern era of baseball. A home plate-shaped plaque next to the statue reads: On October 1, 1903 the first modern World Series between the American League champion Boston Pilgrims (later known as the Red Sox) and the National League champion Pittsburgh Pirates was played on this site. General admission tickets were fifty cents. The Pilgrims, led by twenty-eight game winner Cy Young, trailed the series three games to one but then swept four consecutive victories to win the championship five games to three. In 1999, 88 years after his final major league appearance and 44 years after his death, editors at The Sporting News ranked Young 14th on their list of "Baseball's 100 Greatest Players". That same year, baseball fans named him to the Major League Baseball All-Century Team.	[ { "paragraph_id": 0, "text": "Denton True \"Cy\" Young (March 29, 1867 – November 4, 1955) was an American Major League Baseball (MLB) pitcher. Born in Gilmore, Ohio, he worked on his family's farm as a youth before starting his professional baseball career. Young entered the major leagues in 1890 with the National League's Cleveland Spiders and pitched for them until 1898. He was then transferred to the St. Louis Cardinals franchise. In 1901, Young jumped to the American League and played for the Boston Red Sox franchise until 1908, helping them win the 1903 World Series. He finished his career with the Cleveland Naps and Boston Rustlers, retiring in 1911.", "title": "" }, { "paragraph_id": 1, "text": "Young was one of the hardest-throwing pitchers in the game early in his career. After his speed diminished, he relied more on his control and remained effective into his forties. By the time Young retired, he had established numerous pitching records, some of which have stood for over a century. He holds MLB records for the most career wins, with 511, along with most career losses, innings pitched, games started, and complete games. He led his league in wins during five seasons and pitched three no-hitters, including a perfect game in 1904.", "title": "" }, { "paragraph_id": 2, "text": "Young was elected to the National Baseball Hall of Fame in 1937. He is often regarded as one of the greatest pitchers of all time, as well as a pioneer of modern pitching. In 1956, one year after his death, the Cy Young Award was created to annually honor the best pitcher in the Major Leagues (later each League) of the previous season, cementing his name as synonymous with excellence in pitching.", "title": "" }, { "paragraph_id": 3, "text": "Cy Young was the oldest child born to Nancy (Mottmiller) and McKinzie Young, Jr., and was christened Denton True Young. He was of part German descent. The couple had four more children: Jesse Carlton, Alonzo, Ella, and Anthony. When the couple married, McKinzie's father gave him the 54 acres (220,000 m) of farm land he owned. Young was born in Gilmore, a tiny farming community located in Washington Township, Tuscarawas County, Ohio. He was raised on one of the local farms and went by the name Dent Young in his early years. Young was also known as \"Farmer Young\" and \"Farmboy Young\". Young stopped his formal education after he completed the sixth grade so he could help out on the family's farm. In 1885, Young moved with his father to Nebraska, and in the summer of 1887, they returned to Gilmore.", "title": "Early life" }, { "paragraph_id": 4, "text": "Young played for many amateur baseball leagues during his youth, including a semi-professional Carrollton team in 1888. Young pitched and played second base. The first box score known containing the name Young came from that season. In that game, Young played first base and had three hits in three at-bats. After the season, Young received an offer to play for the minor league Canton team, which started Young's professional career.", "title": "Early life" }, { "paragraph_id": 5, "text": "Young began his professional career in 1890 with the Canton, Ohio based Canton Nadjys, team of the Tri-State League, a professional minor league. During his tryout, Young impressed the scouts, recalling years later, \"I almost tore the boards off the grandstand with my fast ball.\" Cy Young's nickname came from the fences that he had destroyed using his fastball. The fences looked like a cyclone had hit them. Reporters later shortened the name to \"Cy\", which became the nickname Young used for the rest of his life. During his one year with Canton, he was 15-15.", "title": "Professional career" }, { "paragraph_id": 6, "text": "Franchises in the National League, the major professional baseball league at the time, wanted the best players available to them. Therefore, in 1890, Young signed with the Cleveland Spiders, a team which had moved from the American Association to the National League the previous year.", "title": "Professional career" }, { "paragraph_id": 7, "text": "On August 6, 1890, Young's major league debut, he pitched a three-hit 8–1 victory over the Chicago Colts. While Young was with the Spiders, Chief Zimmer was his catcher more often than any other player. Bill James, a baseball statistician, estimated that Zimmer caught Young in more games than any other battery in baseball history. Early on, Young established himself as one of the harder-throwing pitchers in the game. Bill James wrote that Zimmer often put a piece of beefsteak inside his baseball glove to protect his catching hand from Young's fastball. In the absence of radar guns, however, it is impossible to say just how hard Young actually threw. Young continued to perform at a high level during the 1890 season. On the last day of the season, Young won both games of a doubleheader. In the first weeks of Young's career, Cap Anson, the player-manager of the Chicago Colts spotted Young's ability. Anson told Spiders manager Gus Schmelz, \"He's too green to do your club much good, but I believe if I taught him what I know, I might make a pitcher out of him in a couple of years. He's not worth it now, but I'm willing to give you $1,000 ($32,570 today) for him.\" Schmelz replied, \"Cap, you can keep your thousand and we'll keep the rube.\"", "title": "Professional career" }, { "paragraph_id": 8, "text": "Two years after Young's debut, the National League moved the pitcher's position back by 5 feet (1.5 m). Since 1881, pitchers had pitched within a \"box\" whose front line was 50 feet (15 m) from home base, and since 1887 they had been compelled to toe the back line of the box when delivering the ball. The back line was 55 feet 6 inches (16.92 m) away from home. In 1893, 5 feet (1.5 m) was added to the back line, yielding the modern pitching distance of 60 feet 6 inches (18.44 m). In the book The Neyer/James Guide to Pitchers, sports journalist Rob Neyer wrote that the speed with which pitchers like Cy Young, Amos Rusie, and Jouett Meekin threw was the impetus that caused the move.", "title": "Professional career" }, { "paragraph_id": 9, "text": "The 1892 regular season was a success for Young, who led the National League in wins (36), ERA (1.93), and shutouts (9). Just as many contemporary Minor League Baseball leagues operate today, the National League was using a split season format during the 1892 season. The Boston Beaneaters won the first-half and the Spiders won the second-half, with a best-of-nine series determining the league champion. Despite the Spiders' second-half run, the Beaneaters swept the series, five games to none. Young pitched three complete games: he lost two and one ended in a scoreless tie.", "title": "Professional career" }, { "paragraph_id": 10, "text": "The Spiders faced the Baltimore Orioles in the Temple Cup, a precursor to the World Series, in 1895. Young won three games in the series and Cleveland won the Cup, four games to one. It was around this time that Young added what he called a \"slow ball\" to his pitching repertoire to reduce stress on his arm. The pitch today is called a changeup. In 1896, Young lost a no-hitter with two outs in the ninth inning when Ed Delahanty of the Philadelphia Phillies hit a single. On September 18, 1897, Young pitched the first no-hitter of his career in a game against the Cincinnati Reds. Although Young did not walk a batter, the Spiders committed four errors while on defense. One of the errors had originally been ruled a hit, but the Cleveland third baseman sent a note to the press box after the eighth inning, saying he had made an error, and the ruling was changed. Young later said that, despite his teammate's gesture, he considered the game to be a one-hitter.", "title": "Professional career" }, { "paragraph_id": 11, "text": "Prior to the 1899 season, Frank Robison, the Spiders owner, bought the St. Louis Browns, thus owning two clubs simultaneously. The Browns were renamed the \"Perfectos\", and restocked with Cleveland talent. Just weeks before the season opener, most of the better Spiders players were transferred to St. Louis, including three future Hall of Famers: Young, Jesse Burkett, and Bobby Wallace. The roster maneuvers failed to create a powerhouse Perfectos team, as St. Louis finished fifth in both 1899 and 1900. Meanwhile, the depleted Spiders lost 134 games, the most in MLB history, before folding. Young spent two years with St. Louis, which is where he found his favorite catcher, Lou Criger. The two men were teammates for a decade.", "title": "Professional career" }, { "paragraph_id": 12, "text": "In 1901, the rival American League declared major league status and set about raiding National League rosters. Young left St. Louis and joined the American League's Boston Americans for a $3,500 contract ($123,116 today). Young would remain with the Boston team until 1909. In his first year in the American League, Young was dominant. Pitching to Criger, who had also jumped to Boston, Young led the league in wins, strikeouts, and ERA, thus earning the colloquial AL Triple Crown for pitchers. Young won almost 42% of his team's games in 1901, accounting for 33 of his team's 79 wins. In February 1902, before the start of the baseball season, Young served as a pitching coach at Harvard University. The sixth-grade graduate instructing Harvard students delighted Boston newspapers. The following year, Young coached at Mercer University during the spring. The team went on to win the Georgia state championship in 1903, 1904, and 1905.", "title": "Professional career" }, { "paragraph_id": 13, "text": "The Boston Americans played the Pittsburgh Pirates in the first modern World Series in 1903. Young, who started Game One against the visiting Pirates, thus threw the first pitch in modern World Series history. The Pirates scored four runs in that first inning, and Young lost the game. Young performed better in subsequent games, winning his next two starts. He also drove in three runs in Game Five. Young finished the series with a 2–1 record and a 1.85 ERA in four appearances, and Boston defeated Pittsburgh, five games to three.", "title": "Professional career" }, { "paragraph_id": 14, "text": "After one-hitting Boston on May 2, 1904, Philadelphia Athletics pitcher Rube Waddell taunted Young to face him so that he could repeat his performance against Boston's ace. Three days later, Young pitched a perfect game against Waddell and the Athletics. It was the first perfect game in American League history. Waddell was the 27th and last batter, and when he flied out, Young shouted, \"How do you like that, you hayseed?\"", "title": "Professional career" }, { "paragraph_id": 15, "text": "Waddell had picked an inauspicious time to issue his challenge. Young's perfect game was the centerpiece of a pitching streak. Young set major league records for the most consecutive scoreless innings pitched and the most consecutive innings without allowing a hit; the latter record still stands at 25.1 innings, or 76 hitless batters. Even after he allowed a hit, Young's scoreless streak reached a then-record 45 shutout innings. Before Young, only two pitchers had thrown perfect games. This occurred in 1880, when Lee Richmond and John Montgomery Ward pitched perfect games within five days of each other, although under somewhat different rules: the front edge of the pitcher's box was only 45 feet (14 m) from home base (the modern release point is about 10 feet (3.0 m) farther away); walks required eight balls; and pitchers were obliged to throw side-armed. Young's perfect game was the first under the modern rules established in 1893. One year later, on July 4, 1905, Rube Waddell beat Young and the Americans, 4–2, in a 20-inning matchup. Young pitched 13 consecutive scoreless innings before he gave up a pair of unearned runs in the final inning. Young did not walk a batter and was later quoted: \"For my part, I think it was the greatest game of ball I ever took part in.\" In 1907, Young and Waddell faced off in a scoreless 13-inning tie.", "title": "Professional career" }, { "paragraph_id": 16, "text": "In 1908, Young pitched the third no-hitter of his career. Three months past his 41st birthday, he was the oldest pitcher to record a no-hitter, a record which would stand 82 years until 43-year-old Nolan Ryan broke it. Only a walk kept Young from his second perfect game. After that runner was caught stealing, no other batter reached base. At the time, Young was the second-oldest player in either league. In another game one month before his no-hitter, he allowed just one single while facing 28 batters. On August 13, 1908, the league celebrated \"Cy Young Day\". No American League games were played on that day, and a group of All-Stars from the league's other teams gathered in Boston to play against Young and the Red Sox. When the season ended, he posted a 1.26 ERA, which gave him not only the lowest in his career, but also a major league record of being the oldest pitcher with 150+ innings and an ERA under 1.50.", "title": "Professional career" }, { "paragraph_id": 17, "text": "Young was traded back to Cleveland, the place where he played over half his career, before the 1909 season, to the Cleveland Naps of the American League. The following season, 1910, he won his 500th career game on July 19 against Washington.", "title": "Professional career" }, { "paragraph_id": 18, "text": "He split 1911, his final year, between the Naps and the Boston Rustlers. On September 22, 1911, Young shut out the Pittsburgh Pirates, 1–0, for his last career victory. In his final start two weeks later, the last eight batters of Young's career combined to hit a triple, four singles, and three doubles. By the time of his retirement, Young's control had faltered. He had also gained weight. In two of his last three years, he was the oldest player in the league.", "title": "Professional career" }, { "paragraph_id": 19, "text": "Young established numerous pitching records, some of which have stood for over a century. Young compiled 511 wins, which is the most in major league history and 94 ahead of Walter Johnson, second on the list. At the time of Young's retirement, Pud Galvin had the second most career wins with 364. In addition to wins, Young still holds the major league records for most career innings pitched (7,356), most career games started (815), and most complete games (749). He also retired with 316 losses, the most in MLB history. Young's career record for strikeouts was broken by Johnson in 1921. Young's 76 career shutouts are fourth all-time.", "title": "Professional career" }, { "paragraph_id": 20, "text": "Y is for YoungThe magnificent Cy;People batted against him,But I never knew why.", "title": "Professional career" }, { "paragraph_id": 21, "text": "— Ogden Nash, Sport magazine (January 1949)", "title": "Professional career" }, { "paragraph_id": 22, "text": "Young led his league in wins five times (1892, 1895, and 1901–1903), finishing second twice. His career high was 36 in 1892. He won at least 30 games in a season five times. He had 15 seasons with 20 or more wins, two more than Christy Mathewson and Warren Spahn. Young won two ERA titles during his career, in 1892 (1.93) and in 1901 (1.62), and was three times the runner-up. Young's earned run average was below 2.00 six times, but it was not uncommon during the dead-ball era. Although Young threw over 400 innings in each of his first four full seasons, he did not lead his league until 1902. He had 40 or more complete games nine times. Young also led his league in strikeouts twice (140 in 1896 and 158 in 1901), and in shutouts seven times. Young led his league in fewest walks per nine innings fourteen times and finished second once. Only twice in his 22-year career did he finish lower than 5th in the category. Although the WHIP ratio was not calculated until well after Young's death, he was retroactively league leader seven times and was second or third another seven times.", "title": "Professional career" }, { "paragraph_id": 23, "text": "Young is tied with Roger Clemens for the most career wins by a Boston Red Sox pitcher: they each won 192 games while with the franchise. In addition, Young pitched three no-hitters, including the third perfect game in baseball history, first in baseball's \"modern era\". Young also was an above average hitting pitcher. He posted a .210 batting average (623-for-2960) with 325 runs, 290 RBIs, 18 home runs, and 81 walks. From 1891 through 1905, he drove in 10 or more runs for 15 straight seasons, with a high of 28 in 1896.", "title": "Professional career" }, { "paragraph_id": 24, "text": "Particularly after his fastball slowed, Young relied upon his control. He was once quoted as saying, \"Some may have thought it was essential to know how to curve a ball before anything else. Experience, to my mind, teaches to the contrary. Any young player who has good control will become a successful curve pitcher long before the pitcher who is endeavoring to master both curves and control at the same time. The curve is merely an accessory to control.\" In addition to his exceptional control, Young was also a workhorse who avoided injury, owing partly to his ability to pitch in different arm positions (overhand, three-quarters, sidearm and even submarine). For 19 consecutive years, from 1891 through 1909, Young was in his league's top 10 for innings pitched; in 14 of the seasons, he was in the top five. Not until 1900, a decade into his career, did Young pitch two consecutive incomplete games. By habit, Young restricted his practice throws in spring training. \"I figured the old arm had just so many throws in it,\" said Young, \"and there wasn't any use wasting them.\" He once described his approach before a game:", "title": "Pitching style" }, { "paragraph_id": 25, "text": "I never warmed up ten, fifteen minutes before a game like most pitchers do. I'd loosen up, three, four minutes. Five at the outside. And I never went to the bullpen. Oh, I'd relieve all right, plenty of times, but I went right from the bench to the box, and I'd take a few warm-up pitches and be ready. Then I had good control. I aimed to make the batter hit the ball, and I threw as few pitches as possible. That's why I was able to work every other day.", "title": "Pitching style" }, { "paragraph_id": 26, "text": "* Stepped down to a player only role.", "title": "Managerial record" }, { "paragraph_id": 27, "text": "In 1910, it was reported that Young became a vegetarian, after baseball and working on his farm. In 1913, he served as manager of the Cleveland Green Sox of the Federal League, which was at the time an outlaw league. However, he never worked in baseball after that.", "title": "Later life" }, { "paragraph_id": 28, "text": "Young was a Freemason.", "title": "Later life" }, { "paragraph_id": 29, "text": "In 1916, he ran for county treasurer in Tuscarawas County, Ohio.", "title": "Later life" }, { "paragraph_id": 30, "text": "Young's wife, Roba, whom he had known since childhood, died in 1933. After she died, Young tried several jobs, and eventually moved in with friends John and Ruth Benedum and did odd jobs for them. Young took part in many baseball events after his retirement. In 1937, 26 years after he retired from baseball, Young was inducted into the Baseball Hall of Fame. He was among the first to donate mementos to the Hall.", "title": "Later life" }, { "paragraph_id": 31, "text": "By 1940, Young's only source of income was stock dividends of $300 per year ($6,267 today). On November 4, 1955, Young died on the Benedums' farm at the age of 88. He was buried in Peoli, Ohio.", "title": "Later life" }, { "paragraph_id": 32, "text": "Young's career is seen as a bridge from baseball's earliest days to its modern era; he pitched against stars such as Cap Anson, already an established player when the National League was first formed in 1876, as well as against Eddie Collins, who played until 1930. When Young's career began, pitchers delivered the baseball underhand and fouls were not counted as strikes. The pitcher's mound was not moved back to its present position of 60 feet 6 inches (18.44 m) until Young's fourth season; he did not wear a glove until his sixth season.", "title": "Legacy" }, { "paragraph_id": 33, "text": "Young was elected to the National Baseball Hall of Fame in 1937. In 1956, about one year after Young's death, the Cy Young Award was created to honor the best pitcher in Major League Baseball for each season. The first award was given to Brooklyn's Don Newcombe. Originally, it was a single award covering all of baseball. The honor was divided into two Cy Young Awards in 1967, one for each league.", "title": "Legacy" }, { "paragraph_id": 34, "text": "On September 23, 1993, a statue dedicated to him was unveiled by Northeastern University on the site of the Red Sox's original stadium, the Huntington Avenue Grounds. It was there that Young had pitched the first game of the 1903 World Series, as well as the first perfect game in the modern era of baseball. A home plate-shaped plaque next to the statue reads:", "title": "Legacy" }, { "paragraph_id": 35, "text": "On October 1, 1903 the first modern World Series between the American League champion Boston Pilgrims (later known as the Red Sox) and the National League champion Pittsburgh Pirates was played on this site. General admission tickets were fifty cents. The Pilgrims, led by twenty-eight game winner Cy Young, trailed the series three games to one but then swept four consecutive victories to win the championship five games to three.", "title": "Legacy" }, { "paragraph_id": 36, "text": "In 1999, 88 years after his final major league appearance and 44 years after his death, editors at The Sporting News ranked Young 14th on their list of \"Baseball's 100 Greatest Players\". That same year, baseball fans named him to the Major League Baseball All-Century Team.", "title": "Legacy" } ]	Denton True "Cy" Young was an American Major League Baseball (MLB) pitcher. Born in Gilmore, Ohio, he worked on his family's farm as a youth before starting his professional baseball career. Young entered the major leagues in 1890 with the National League's Cleveland Spiders and pitched for them until 1898. He was then transferred to the St. Louis Cardinals franchise. In 1901, Young jumped to the American League and played for the Boston Red Sox franchise until 1908, helping them win the 1903 World Series. He finished his career with the Cleveland Naps and Boston Rustlers, retiring in 1911. Young was one of the hardest-throwing pitchers in the game early in his career. After his speed diminished, he relied more on his control and remained effective into his forties. By the time Young retired, he had established numerous pitching records, some of which have stood for over a century. He holds MLB records for the most career wins, with 511, along with most career losses, innings pitched, games started, and complete games. He led his league in wins during five seasons and pitched three no-hitters, including a perfect game in 1904. Young was elected to the National Baseball Hall of Fame in 1937. He is often regarded as one of the greatest pitchers of all time, as well as a pioneer of modern pitching. In 1956, one year after his death, the Cy Young Award was created to annually honor the best pitcher in the Major Leagues of the previous season, cementing his name as synonymous with excellence in pitching.	2001-10-19T18:34:51Z	2023-12-15T03:29:49Z	[ "Template:Div col", "Template:Note label", "Template:Baseball-reference manager", "Template:Boston Red Sox managers", "Template:Good article", "Template:Quote box", "Template:Reflist", "Template:Mercer Bears baseball coach navbox", "Template:Cite book", "Template:Convert", "Template:Main", "Template:Cite news", "Template:Baseballstats", "Template:Baseballhof", "Template:ISBN", "Template:Webarchive", "Template:Navboxes", "Template:Use mdy dates", "Template:Infobox baseball biography", "Template:Winning percentage", "Template:Inflation", "Template:Cite web", "Template:Commons category", "Template:Authority control", "Template:Short description", "Template:Other uses", "Template:Ref label", "Template:Mlby", "Template:Portal", "Template:Div col end" ]	https://en.wikipedia.org/wiki/Cy_Young
6,851	Coronation Street	Coronation Street (colloquially referred to as Corrie) is a British television soap opera created by Granada Television and shown on ITV since 9 December 1960. The programme centres on a cobbled, terraced street in the fictional Weatherfield, a town based on inner-city Salford, England. Originally broadcast twice weekly, the series began airing six times a week in 2017. The programme was conceived by scriptwriter Tony Warren. Warren's initial proposal was rejected by the station's founder Sidney Bernstein, but he was persuaded by producer Harry Elton to produce the programme for 13 pilot episodes. The show has since become a significant part of British culture. Coronation Street is made by Granada's successor, ITV Studios, at MediaCityUK and shown in all ITV regions, as well as internationally. In 2010, upon its 50th anniversary, the series was recognised by Guinness World Records as the world's longest-running television soap opera. Initially influenced by the conventions of kitchen-sink realism, Coronation Street is noted for its depiction of a down-to-earth, working-class community, combined with light-hearted humour and strong characters. The show currently averages around five million viewers per episode. The show premiered its 10,000th episode on 7 February 2020, and celebrated its 60th anniversary later that year. The first episode was aired on 9 December 1960 at 7 pm, and was not initially a critical success; Daily Mirror columnist Ken Irwin claimed the series would only last three weeks. Granada Television had commissioned only 13 episodes, and some inside the company doubted the show would last beyond its planned production run. Despite the criticism, viewers were immediately drawn into the serial, won over by Coronation Street's ordinary characters. The programme also made use of Northern English language and dialect; affectionate local terms like "eh, chuck?", "nowt" (/naʊt/, from nought, meaning nothing), and "by 'eck!" became widely heard on British television for the first time. Early episodes told the story of student Ken Barlow (William Roache), who had won a place at university, so found his working-class background — as well as his younger brother David (Alan Rothwell) and his parents, Frank (Frank Pemberton) and Ida (Noel Dyson) — something of an embarrassment. The character was one of the few to have experienced much of life outside of Coronation Street. In some ways, this predicts the growth of globalisation. In an episode from 1961, Barlow declares: "You can't go on just thinking about your own street these days. We're living with people on the other side of the world. There's more to worry about than Elsie Tanner (Pat Phoenix) and her boyfriends." Roache is the only remaining member of the original cast, which makes him the longest-serving actor in Coronation Street, and in British and global soap history. In March 1961, Coronation Street reached number one in the television ratings and remained there for the rest of the year. Earlier in 1961, a television audience measurement (TAM) showed that 75% of available viewers (15 million) tuned into Corrie, and by 1964, the programme had over 20 million regular viewers, with ratings peaking on 2 December 1964, at 21.36 million viewers. In spite of rising popularity with viewers, Coronation Street was criticised by some for its outdated portrayal of the urban working class, and its representation of a community that was a nostalgic fantasy. After the first episode in 1960, the Daily Mirror printed: "The programme is doomed from the outset ... For there is little reality in this new serial, which apparently, we have to suffer twice a week." In 1964, Coronation Street appointed a new producer, Tim Aspinall. Aspinall decided on a new broom policy and the "Bloody Purge" of 1964 began, with nine actors being sacked in total. The first cast member to be written out was Lynne Carol, who had played Martha Longhurst since episode two and the preview of the programme. Her sacking was so controversial that fellow actress Violet Carson (Ena Sharples) threatened to quit, but she was eventually persuaded not to. The media reported extensively on the storyline, and when Lynne Carol took a private trip to the Daily Mail Ideal Home Exhibition in London, she was mobbed by fans and asked to leave on the grounds of public safety. Many, including Coronation Street writer H.V. Kershaw, saw the killing of Martha as a desperate move to boost viewer ratings. By 1968, critics were suggesting that the programme no longer reflected life in 1960s Britain, a decade that had seen significant economic and social change in the nation. Granada hurried to update the programme, with the hope of introducing more issue-driven stories, including Lucille Hewitt (Jennifer Moss) becoming addicted to drugs, Jerry Booth (Graham Haberfield) being in a storyline about homosexuality, Emily Nugent (Eileen Derbyshire) having an out-of-wedlock child, and introducing a black family, but all of these ideas were dropped for fear of upsetting viewers. The show's production team was tested when many core cast members left the programme in the early 1970s. When Arthur Leslie died suddenly in 1970, his character, Rovers landlord Jack Walker, died off screen shortly afterwards. Anne Reid quit as Valerie Barlow; her character was killed off in 1971, electrocuting herself with a faulty hairdryer. Ratings reached a low of eight million in February 1973, when Pat Phoenix quit as Elsie Tanner and Doris Speed (Annie Walker) took two months' leave due to bereavement. The audience of ITV's other flagship soap opera Crossroads increased markedly at this time, as its established cast, such as Meg Richardson (Noele Gordon), grew in popularity. These sudden departures forced the writing team to quickly develop characters who had previously stood in the background. The roles of mostly younger characters including Bet Lynch (Julie Goodyear), Deirdre Hunt (Anne Kirkbride), Rita Littlewood (Barbara Knox), Mavis Riley (Thelma Barlow) and Ivy Tyldesley (Lynne Perrie) were built up between 1972 and 1973 (with Perrie's character being renamed to the better-known "Tilsley"), and characters such as Gail Potter (Helen Worth), Blanche Hunt (Patricia Cutts/Maggie Jones), and Vera Duckworth (Liz Dawn) first appearing in 1974. These characters would remain at the centre of the programme for many years, with Gail still being in the show nearly half a century after her first appearance. Comic storylines had been popular in the series in the 1960s but had become sparse during the early 1970s. These were re-introduced by new producer Bill Podmore who joined the series in 1976. He had worked on Granada comedy productions prior to his appointment. In September 1977, the News of the World quoted actor Stephen Hancock (Ernest Bishop) as saying "The Street kills an actor. I'm just doing a job, not acting. The scriptwriters have turned me into Ernie Bishop. I've tried to resist it but it is very hard not to play the part all the time, even at home." This was the first sight the public had of a bitter argument between Hancock and Granada Television. Hancock objected to the cast payment system and threatened to quit the show to safeguard his principles. The main dispute was between Hancock and Podmore, with Podmore being nicknamed 'The Godfather' by the British media. The basis of Hancock's argument was that different actors were guaranteed different numbers of episode appearances per year, thus some were paid more than others. Actors from the earliest days of the programme, including Pat Phoenix, Doris Speed and Peter Adamson, were guaranteed payment for every one of the year's episodes, regardless of whether or not they actually appeared. Podmore was not willing to change what he called a 'complex and well-established system', leading Hancock to stand by his principles and resign. The problem now shifted, and writers had to write Ernie out but save his wife Emily (Eileen Derbyshire). The decision was made for Ernest to be killed off in a bungled robbery at Mike Baldwin's (Johnny Briggs) factory, where he worked in payroll. Ernest was killed by a single gunshot to the stomach on 11 January 1978. It was the first time that violence on such a scale had been shown on Coronation Street and after the episode was aired, Granada's switchboard was jammed by angry viewers. Letters of complaint arrived in their hundreds, and the Lobby Against TV Violence fiercely objected Granada's decision to broadcast the episode. Granada stated that the storyline was not about violence, but that it aimed to show the desolation and loss felt by Ernest's widow, Emily. Coronation Street had little competition within its prime-time slot, and some critics suggested that the programme had grown complacent, moving away from socially viable storylines, and again presenting a dated view of working-class life. Peter Adamson, who had played Len Fairclough since 1961, was sacked in 1983 for breach of contract. He had been warned by Granada Television for writing unauthorised newspaper articles criticising the show and cast. Coronation Street producer Podmore sacked Adamson when it was revealed he had sold his memoirs after the previous warning. The sacking coincided with allegations of Adamson having indecently assaulted two young girls. In April 1983, a newspaper reported that Adamson had been arrested for indecently assaulting two eight-year-old girls at a swimming pool. The police complaint was that Adamson's hands had strayed while giving the girls swimming lessons. Granada Television gave Adamson financial support through his legal problems, with a Crown Court jury finding him not guilty in July 1983. Adamson's dispute over his memoirs and newspaper articles was not known to the public and the media reported that Adamson had been dismissed because of the shame indecent assault allegations had brought onto Granada and the Coronation Street brand. Len Fairclough was killed off-screen in a motorway crash on 7 December 1983. To demonise the character, it was revealed that he had been returning home from an affair, cheating on his wife Rita (Barbara Knox). Adamson celebrated the character's death by delivering an obituary on TV-am dressed as an undertaker. During 1988, actor Christopher Quinten, who had played Brian Tilsley since 27 December 1978, told bosses at Granada that he was going to move to the United States to marry his then-fiancée, American talk show host Leeza Gibbons and to build an acting career in Los Angeles. In announcing his resignation, Quinten tried to ensure that his role would be left open for him to return in the event that his stint in America failed. At the time, his character was married to Gail and the story conference called to write Brian out struggled to find a justifiable way to write him out while still leaving enough scope for a possible return. The decision was made that Brian should die. Quinten was in Los Angeles when the storyline was decided, and upon his return to the United Kingdom, he was shocked at Brian's fate and threatened to fly back to America so that scenes could not be filmed. He was talked round by co-star Helen Worth, who pointed out that he might be blacklisted by Equity if he quit the programme abruptly. Brian Tilsley's death was broadcast on 15 February 1989. After the breakdown of his marriage to Gail, Brian started spending his evenings going to discos and meeting up with various women. He tried to protect a young lady from a group of thugs outside a nightclub, but was stabbed in the stomach. He died as a result of his injuries. The stabbing brought massive complaints from viewers and Mary Whitehouse delivered an angry sermon about television violence. Between 1980 and 1989, Coronation Street underwent some of the most radical changes since its launch. By May 1984, William Roache stood as the only original cast member, after the departures of Violet Carson (Ena Sharples) in 1980, Doris Speed (Annie Walker) in 1983, and both Pat Phoenix (Elsie Tanner) and Jack Howarth (Albert Tatlock) in 1984. Albert Tatlock's departure came when his character's off screen death was announced several months after the death of actor Jack Howarth at the age of 88. While the press predicted the end of Corrie, H. V. Kershaw declared that "There are no stars in Coronation Street. The show had also gained a new rival on Channel 4 with the launch of Brookside, and BBC was preparing to launch EastEnders, which would first air in February 1985. Writers drew on the show's many archetypes, with established characters stepping into the roles left by the original cast. Phyllis Pearce (Jill Summers) was hailed as the new Ena Sharples in 1982, the Duckworths moved into No.9 in 1983 and slipped into the role once held by the Ogdens, while Percy Sugden (Bill Waddington) appeared in 1983 and took over the grumpy war veteran role from Albert Tatlock. The question of who would take over the Rovers Return after Annie Walker's 1983 exit was answered in 1985 when Bet Lynch (who also mirrored the vulnerability and strength of Elsie Tanner) was installed as landlady. In 1983, Shirley Armitage (Lisa Lewis) became the first major black character in her role as machinist at Baldwin's Casuals. Ken Barlow married Deirdre Langton (Anne Kirkbride) on 27 July 1981. The episode was watched by over 15 million viewers – more ITV viewers than the wedding of Prince Charles and Lady Diana two days later. In the 1980s relationships were cemented between established characters: Alf Roberts (Bryan Mosley) married Audrey Potter (Sue Nicholls) in 1985; Kevin Webster (Michael Le Vell) married Sally Seddon (Sally Whittaker) in 1986; Bet Lynch married Alec Gilroy (Roy Barraclough) in 1987; and 1988 saw the marriages of widowed Ivy Tilsley to Don Brennan (Geoffrey Hinsliff), and the long-awaited union of Mavis Riley and Derek Wilton (Peter Baldwin), after over a decade of on-off romances and a failed marriage attempt in 1984. In 1982, the arrival of Channel 4, and its edgy new soap opera Brookside, sparked one of the biggest changes for Coronation Street. Unlike Coronation Street, which had a very nostalgic view of working-class life, Brookside brought together working and middle-class families in a more contemporary environment. The dialogue often included expletives and the stories were more hard-hitting, and of the current Zeitgeist. Whereas stories at this time in Coronation Street were largely about family affairs, Brookside concentrated on social affairs such as industrial action, unemployment, drugs, rape, and the black market. The BBC also introduced a new prime time soap opera, EastEnders in 1985. While ratings for Coronation Street remained consistent throughout the decade, EastEnders regularly obtained higher viewing figures due to its omnibus episodes shown at weekends. The Coronation Street episode broadcast on 2 January 1985 attracted 21.40 million viewers, making it the most-watched episode in the show's history based on a single showing. Subsequent episodes would achieve higher figures when the original broadcast and omnibus edition figures were combined. With prime time competition, Corrie was again seen as being old fashioned, with the introduction of the 'normal' Clayton family in 1985 being a failure with viewers, being written out the following year. Between 1988 and 1989, many aspects of the show were modernised by new producer David Liddiment. A new exterior set had been built in 1982, and in 1989 it was redeveloped to include new houses and shops. Production techniques were also changed with a new studio being built, and the inclusion of more location filming, which had moved exterior scenes from being shot on film to videotape in 1988. Due to new pressures, an introduction of the third weekly episode aired on 20 October 1989, to broadcast each Friday at 7:30 pm. The 1980s featured some of the most prominent storylines in the programme's history, such as Deirdre Barlow's affair with Mike Baldwin (Johnny Briggs) in 1983, the first soap storyline to receive widespread media attention. The feud between Ken Barlow and Mike Baldwin would continue for many years, with Mike even marrying Ken's daughter, Susan (Wendy Jane Walker). In 1986, there was a fire at the Rovers Return. The episode that aired on Christmas Day 1987, attracted a combined audience (original and omnibus) of 26.65 million – a figure helped by the fact that this episode heralded the departure of immensely-popular character Hilda Ogden (Jean Alexander). Between 1986 and 1989, the story of Rita Fairclough's (Barbara Knox) psychological abuse at the hands of Alan Bradley (Mark Eden), and then his subsequent death under the wheels of a Blackpool tram in December 1989, was played out. This storyline gave the show its highest combined viewing figure in its history with 26.93 million for the episode that aired on 15 (and 19) March 1989, where Alan is hiding from the police after trying to kill Rita in the previous episode. This rating is sometimes incorrectly credited to the 8 December 1989 tram death episode. In spite of updated sets and production changes, Coronation Street still received criticism. In 1992, chairman of the Broadcasting Standards Council, Lord Rees-Mogg, criticised the low representation of ethnic minorities, and the programme's portrayal of the cosy familiarity of a bygone era, particularly as many comparable neighbours in the real life Greater Manchester area had a significant percentage of black and Asian residents. Some newspapers ran headlines such as "Coronation Street shuts out blacks" (The Times), and "'Put colour in t'Street" (Daily Mirror). Patrick Stoddart of The Times wrote: "The millions who watch Coronation Street – and who will continue to do so despite Lord Rees-Mogg – know real life when they see it ... in the most confident and accomplished soap opera television has ever seen". Black and Asian characters had appeared from time to time over the years, but it was not until 1999 that the show featured its first regular non-white family, the Desai family. New characters Des (Philip Middlemiss) and Steph Barnes (Amelia Bullmore) moved into one of the new houses in 1990, being dubbed by the media as Yuppies. Raquel Wolstenhulme (Sarah Lancashire) first appeared at the beginning of 1991 and went on to become one of the most popular characters of the era until her departure in 1996, followed by a brief comeback four years later. The McDonald family were developed and the fiery relationships between Liz (Beverly Callard), Jim (Charles Lawson), Steve (Simon Gregson) and Andy (Nicholas Cochrane) interested viewers. Other newcomers were wheelchair user and pensioner Maud Grimes (Elizabeth Bradley), middle-aged cafe owner Roy Cropper (David Neilson), young married couple Gary and Judy Mallett (Ian Mercer and Gaynor Faye), as well as middle-aged butcher Fred Elliott (John Savident) and his son Ashley Peacock (Steven Arnold). The amount of slapstick and physical humour in storylines increased during the 1990s, with comical characters such as supermarket manager Reg Holdsworth (Ken Morley) and his water bed. In 1997, Brian Park took over as producer, with the idea of promoting young characters as opposed to the older cast. On his first day, he cut the characters of Derek Wilton (Peter Baldwin), Don Brennan (Geoffrey Hinsliff), Percy Sugden (Bill Waddington), Bill Webster (Peter Armitage), Billy Williams (Frank Mills) and Maureen Holdsworth (Sherrie Hewson). Thelma Barlow, who played Derek's wife Mavis, was angered by the firing of her co-star and resigned. The production team lost some of its key writers when Barry Hill, Adele Rose and Julian Roach all resigned as well. In line with Park's suggestion, younger characters were introduced during 1997 and 1998. A teenage Nick Tilsley was recast, played by Adam Rickitt following the departure of original actor Warren Jackson, single mother Zoe Tattersall (Joanne Froggatt) first appeared, and the problem Battersby family moved into No.5. Storylines focussed on tackling 'issues', such as drug dealers, eco-warriors, religious cults, and a transsexual woman. Park quit in 1998, after deciding that he had done what he intended to do; he maintained that his biggest achievement was the introduction of Hayley Patterson (Julie Hesmondhalgh), the first transgender character in a British soap. The character married Roy Cropper soon after her arrival. Some viewers were alienated by the new Coronation Street, and sections of the media voiced their disapproval. Having received criticism of being too out of touch, Corrie now struggled to emulate the more modern Brookside and EastEnders. In the Daily Mirror, Victor Lewis-Smith wrote: "Apparently it doesn't matter that this is a first-class soap opera, superbly scripted and flawlessly performed by a seasoned repertory company." One of Coronation Street's best known storylines took place in March/April 1998, with Deirdre Rachid (Anne Kirkbride) being wrongfully imprisoned after a relationship with con-man Jon Lindsay (Owen Aaronovitch). The episode in which Deirdre was sent to prison had an audience of 19 million viewers, and 'Free the Weatherfield One' campaigns sprung up in a media frenzy. Then Prime Minister Tony Blair even passed comment on Deirdre's sentencing in Parliament. Deirdre was freed after three weeks, with Granada stating that they had always intended for her to be released, in spite of the media interest. On 8 December 2000, the show celebrated its 40th anniversary by broadcasting a live, hour-long episode. King Charles III (then Prince of Wales) appeared as himself in an ITV News bulletin report. Earlier in the year, 13-year-old Sarah-Louise Platt (Tina O'Brien) had become pregnant and given birth to a baby girl, Bethany, on 4 June. The February episode where Gail was told of her daughter's pregnancy was watched by 15 million viewers. From 1999 to 2001, issue-led storylines were introduced such as Toyah Battersby's (Georgia Taylor) rape, Roy and Hayley Cropper (David Neilson and Julie Hesmondhalgh) abducting their foster child, Sarah Platt's Internet chat room abduction and Alma Halliwell's (Amanda Barrie) death from cervical cancer. Such storylines were unpopular with viewers and ratings dropped and in October 2001, Macnaught was abruptly moved to another Granada department and Carolyn Reynolds took over. In 2002, Kieran Roberts was appointed as producer and aimed to re-introduce "gentle storylines and humour", after deciding that the Street should not try to compete with other soaps. In July 2002, Gail married Richard Hillman (Brian Capron), a recently introduced financial advisor who had already left Duggie Ferguson (John Bowe) to die after he fell down a set of ladders during an argument, and murdered his ex-wife Patricia (Annabelle Apsion), before going on to kill neighbour Maxine Peacock (Tracy Shaw); and attempt to kill both his mother-in-law Audrey Roberts (Sue Nicholls) and her longtime friend, Emily Bishop (Eileen Derbyshire), for financial gain due to his mounting debts. After confessing his crimes to Gail in a double episode two-hander in February 2003, Hillman left the street for two weeks before returning with the intent of killing himself as well as Gail, her children Sarah and David (Jack P. Shepherd), and granddaughter Bethany, before driving them into a canal – though the Platt family survived whilst Richard drowned. This came just months after Sarah had survived serious injuries after being passenger in a stolen car which crashed. The storyline received wide press attention, and viewing figures peaked at 19.4 million, with Hillman dubbed a "serial killer" by the media. Todd Grimshaw (Bruno Langley) became Corrie's first regular homosexual character. In 2003, another gay male character was introduced, Sean Tully (Antony Cotton). The bigamy of Peter Barlow (Chris Gascoyne) and his addiction to alcohol, later in the decade, Maya Sharma's (Sasha Behar) revenge on former lover Dev Alahan (Jimmi Harkishin), Charlie Stubbs's (Bill Ward) psychological abuse of Shelley Unwin (Sally Lindsay), and the deaths of Mike Baldwin (Johnny Briggs), Vera Duckworth (Liz Dawn) and Fred Elliott (John Savident). In 2007, Tracy Barlow (Kate Ford) murdered Charlie Stubbs and claiming it was self-defence; the audience during this storyline peaked at 13.3 million. At the 2007 British Soap Awards, it won Best Storyline, and Ford was voted Best Actress for her portrayal. In July 2007, after 34 years in the role of Vera Duckworth, Liz Dawn left the show due to ill health. After conversation between Dawn and producers Kieran Roberts and Steve Frost, the decision was made to kill Vera off. Tina O'Brien revealed in the British press on 4 April 2007 that she would be leaving Coronation Street later in the year. Sarah-Louise, who was involved in some of the decade's most controversial stories, left in December 2007 with her daughter, Bethany. In 2008, Michelle learning that Ryan (Ben Thompson) was not her biological son, having been accidentally swapped at birth with Alex Neeson (Dario Coates). Carla Connor (Alison King) turned to Liam for comfort and developed feelings for him. In spite of knowing about her feelings, Liam married Maria Sutherland (Samia Longchambon). Maria and Liam's baby son was stillborn in April, and during an estrangement from Maria upon the death of their baby, Liam had a one-night stand with Carla, a story which helped pave the way for his departure. In August 2008, Jed Stone (Kenneth Cope) returned after 42 years. Liam Connor and his ex-sister-in-law Carla gave into their feelings for each other and began an affair. Carla's fiancée Tony Gordon (Gray O'Brien) discovered the affair and had Liam killed in a hit-and-run in October. Carla struggled to come to terms with Liam's death, but decided she still loved Tony and married him on 3 December, in an episode attracting 10.3 million viewers. In April 2009 it was revealed that Eileen Grimshaw's (Sue Cleaver) father, Colin (Edward de Souza) – the son of Elsie Tanner's (Pat Phoenix) cousin Arnley – had slept with Eileen's old classmate, Paula Carp (Sharon Duce) while she was still at school, and that Paula's daughter Julie (Katy Cavanagh) was in fact also Colin's daughter. Other stories in 2009 included Maria giving birth to Liam's son and her subsequent relationship with Liam's killer Tony, Steve McDonald's (Simon Gregson) marriage to Becky Granger (Katherine Kelly) and Kevin Webster's (Michael Le Vell) affair with Molly Dobbs (Vicky Binns). On Christmas Day 2009, Sally Webster (Sally Dynevor) told husband Kevin that she had breast cancer, just as he was about to leave her for lover Molly. The show began broadcasting in high-definition in May 2010, and on 17 September that year, Coronation Street entered Guinness World Records as the world's longest-running television soap opera after the American soap opera As the World Turns concluded. William Roache was listed as the world's longest-running soap actor. Coronation Street's 50th anniversary week was celebrated with seven episodes, plus a special one-hour live episode, broadcast from 6–10 December. The episodes averaged 14 million viewers, a 52.1% share of the audience. The anniversary was also publicised with ITV specials and news broadcasts. In the storyline, Nick Tilsley and Leanne Battersby's bar — The Joinery — exploded during Peter Barlow's stag party. As a result, the viaduct was destroyed, sending a Metrolink tram careering onto the street, destroying D&S Alahan's Corner Shop and The Kabin. Two characters, Ashley Peacock (Steven Arnold) and Molly Dobbs (Vicky Binns), along with an unknown taxi driver, were killed as a result of the disaster. Rita Sullivan (Barbara Knox) survived, despite being trapped under the rubble of her destroyed shop. Fiz Stape (Jennie McAlpine) prematurely gave birth to a baby girl, Hope. The episode of EastEnders broadcast on the same day as Coronation Street's 50th anniversary episode included a tribute, with the character Dot Branning (June Brown, who briefly appeared in the show during the 1970s) saying that she never misses an episode of Coronation Street. On 7 February 2020, with its 60th anniversary ten months away, Coronation Street aired its landmark 10,000th episode, the runtime of which was extended to 60 minutes. Producers stated that the episode would contain "a nostalgic trip down memory lane" and "a nod to its own past". A month later, ITV announced that production on the soap would have to be suspended, as the United Kingdom was put into a national lockdown due to the COVID-19 pandemic (see impact of the COVID-19 pandemic on television). After an 11-week intermission for all cast and crew members, filming resumed in June 2020. The episodes would feature social distancing to adhere to the guidelines set by the British government, and it was confirmed that all actors over 70, as well as those with underlying health conditions, would not be allowed to be on set until it was safe to do so. This included Coronation Street veterans William Roache (Ken Barlow) at 88, Barbara Knox (Rita Tanner) at 87, Malcolm Hebden (Norris Cole) at 80 and Sue Nicholls (Audrey Roberts) at 76. It was deemed safe for Maureen Lipman (Evelyn Plummer) and David Neilson (Roy Cropper) to continue. By December all cast members had returned to set and on Wednesday 9 December 2020, the soap celebrated its 60th anniversary, with original plans for the episode forced to change due to COVID-19 guidelines. The anniversary week saw the conclusion of a long-running coercive control storyline that began in May 2019, with Geoff Metcalfe (Ian Bartholomew) abusing Yasmeen Nazir (Shelley King). The showdown, which resulted in the death of Geoff allowed social distancing rules to be relaxed on the condition that the crew members involved formed a social bubble prior to the filming. In late 2021 series producer Iain MacLeod announced that the original plans for the 60th Anniversary would now take place in a special week of episodes in October 2021. On 12 October 2021, it was announced that Coronation Street would partake in a special crossover event involving 7 British soaps to promote the topic of climate change ahead of the 2021 United Nations Climate Change Conference. During the week, beginning from 1 November, social media clips featuring Liam Cavanagh (Jonny McPherson) and Amelia Spencer (Daisy Campbell) from Emmerdale, as well as Daniel Granger (Matthew Chambers) from Doctors were featured on the programme, while events from Holby City were also referenced. A similar clip featuring Maria Connor (Samia Longchambon) was also featured on EastEnders. On 24 January 2022, ITV announced that as part of an overhaul of their evening programming, Coronation Street will permanently air as three 60-minute episodes per week from March 2022 onwards. 2023 saw more hard-hitting storylines such as: Daisy Midgeley's stalker which culminated into an acid attack, Amy Barlow's rape at the hands of Aaron Sandford and Paul Foreman's diagnosis with Motor Neurone Disease. New cast members introduced into the soap included Cait Fitton and Claire Sweeney. Since 1960, Coronation Street has featured many characters whose popularity with viewers and critics has differed greatly. The original cast was created by Tony Warren, with the characters of Ena Sharples (Violet Carson), Elsie Tanner (Pat Phoenix) and Annie Walker (Doris Speed) as central figures. These three women remained with the show for at least 20 years, and became archetypes of British soap opera, often being emulated by other serials. Ena was the street's busybody, battle-axe and self-proclaimed moral voice. Elsie was the tart with a heart, who was constantly hurt by men in the search for true love. Annie Walker, landlady of the Rovers Return Inn, had delusions of grandeur and saw herself as better than the other residents. Coronation Street became known for the portrayal of strong female characters, including original cast characters like Ena, Annie and Elsie, and later Hilda Ogden (Jean Alexander), who first appeared in 1964; all four became household names during the 1960s. Warren's programme was largely matriarchal, which some commentators put down to the female-dominant environment in which he grew up. Consequently, the show has a long tradition of psychologically abused husbands, most famously Stan Ogden (Bernard Youens) and Jack Duckworth (Bill Tarmey), husbands of Hilda and Vera Duckworth (Liz Dawn), respectively. Coronation Street's longest-serving character, Ken Barlow (William Roache) entered the storyline as a young radical, reflecting the youth of 1960s Britain, where figures like the Beatles, the Rolling Stones and the model Twiggy were to reshape the concept of youthful rebellion. Though the rest of the original Barlow family were killed off before the end of the 1970s, Ken, who for 27 years was the only character from the first episode remaining, has remained the constant link throughout the entire series. In 2011, Dennis Tanner (Philip Lowrie), another character from the first episode, returned to Coronation Street after a 43-year absence. Since 1984, Ken Barlow has been the show's only remaining original character. Emily Bishop (Eileen Derbyshire) had appeared in the series since January 1961, when the show was just weeks old, and was the show's longest-serving female character before she departed in January 2016 after 55 years. Rita Tanner (Barbara Knox) appeared on the show for one episode in December 1964, before returning as a full-time cast member in January 1972. She is currently the second longest-serving original cast member on the show. Roache and Knox are also the two oldest-working cast members on the soap at 91 and 90 years-old respectively. Stan and Hilda Ogden were introduced in 1964, with Hilda becoming one of the most famous British soap opera characters of all time. In a 1982 poll, she was voted fourth-most recognisable woman in Britain, after Queen Elizabeth The Queen Mother, Queen Elizabeth II and Diana, Princess of Wales. Hilda's best-known attributes were her pinny, hair curlers, and the "muriel" in her living room with three "flying" duck ornaments. Hilda Ogden's departure on Christmas Day 1987, remains the highest-rated episode of Coronation Street ever, with nearly 27,000,000 viewers. Stan Ogden had been killed off in 1984 following the death of actor Bernard Youens after a long illness which had restricted his appearances towards the end. Bet Lynch (Julie Goodyear) first appeared in 1966, before becoming a regular in 1970, and went on to become one of the most famous Corrie characters. Bet stood as the central character of the show from 1985 until departing in 1995, often being dubbed as "Queen of the Street" by the media, and indeed herself. The character briefly returned in June 2002 and November 2003. Coronation Street and its characters often rely heavily on archetypes, with the characterisation of some of its current and recent cast based loosely on former characters. Phyllis Pearce (Jill Summers), Blanche Hunt (Maggie Jones) and Sylvia Goodwin (Stephanie Cole) embodied the role of the acid-tongued busybody originally held by Ena, Sally Webster (Sally Dynevor) has grown snobbish, like Annie, and a number of the programme's female characters, such as Carla Connor (Alison King), mirror the vulnerability of Elsie and Bet. Other recurring archetypes include the war veteran such as Albert Tatlock (Jack Howarth), Percy Sugden (Bill Waddington) and Gary Windass (Mikey North), the bumbling retail manager like Leonard Swindley (Arthur Lowe), Reg Holdsworth (Ken Morley), Norris Cole (Malcolm Hebden), quick-tempered, tough tradesmen like Len Fairclough (Peter Adamson), Jim McDonald (Charles Lawson), Tommy Harris (Thomas Craig) and Owen Armstrong (Ian Puleston-Davies), and the perennial losers such as Stan and Hilda, Jack and Vera, Les Battersby (Bruce Jones), Beth Tinker (Lisa George) and Kirk Sutherland (Andrew Whyment). Villains are also common character types, such as Tracy Barlow (Kate Ford), Alan Bradley (Mark Eden), Jenny Bradley (Sally Ann Matthews), Rob Donovan (Marc Baylis), Frank Foster (Andrew Lancel), Tony Gordon (Gray O'Brien), Caz Hammond (Rhea Bailey), Richard Hillman (Brian Capron), Greg Kelly (Stephen Billington), Will Chatterton (Leon Ockenden), Nathan Curtis (Christopher Harper), Callum Logan (Sean Ward), Karl Munro (John Michie), Pat Phelan (Connor McIntyre), David Platt (Jack P. Shepherd), Maya Sharma (Sasha Behar), Kirsty Soames (Natalie Gumede), John Stape (Graeme Hawley), Geoff Metcalfe (Ian Bartholomew) and Gary Windass (Mikey North). The show's former archivist and scriptwriter Daran Little disagreed with the characterisation of the show as a collection of stereotypes. "Rather, remember that Elsie, Ena and others were the first of their kind ever seen on British television. If later characters are stereotypes, it's because they are from the same original mould. It is the hundreds of programmes that have followed which have copied Coronation Street." Many topical issues have been tackled on Coronation Street, such as rape, including male and marital, historic sexual abuse, underage pregnancy, transgender issues, the right to die, racism, coercive control, cancer, homosexuality, domestic abuse, child grooming, and suicide, among others. Key storylines include: Mike and Deirdre's affair (1983), the death of Brian Tilsley (1989), Alan Bradley's abuse of Rita (1989), Kevin and Natalie's affair (1997), Deirdre is wrongfully jailed for fraud (1998), Sarah Platt's underage pregnancy (2000), Toyah's rape (2001), Alma's cancer (2001), Richard Hillman's serial killer storyline (2002–2003), Peter Barlow's bigamy (2003), Kevin and Molly's affair (2009), Kirsty's abuse of Tyrone (2012), Hayley's cancer (2013), Faye's underage pregnancy (2015), Bethany's grooming (2017), David's rape (2018), Aidan's suicide (2018), Sinead is diagnosed with cervical cancer (2019), Yasmeen's abuse (2020), Daisy's stalking hell (2023) and Paul's MND (2023). Between 9 December 1960 and 3 March 1961, Coronation Street was broadcast twice weekly, on Wednesday and Friday. During this period, the Friday episode was broadcast live, with the Wednesday episode being pre-recorded 15 minutes later. When the programme went fully networked on 6 March 1961, broadcast days changed to Monday and Wednesday. The last regular episode to be shown live was broadcast on 3 February 1961. The series was transmitted in black and white for the majority of the 1960s. Preparations were made to film episode 923, to be transmitted Wednesday 29 October 1969, in colour. This installment featured the street's residents on a coach trip to the Lake District. In the end, suitable colour film stock for the cameras could not be found and the footage was shot in black and white. The following episode, transmitted Monday 3 November, was videotaped in colour but featured black and white film inserts and title sequence. Like BBC1, the ITV network was officially broadcast in black and white at this point (though programmes were actually broadcast in colour as early as July that year for colour transmission testing and adjustment) so the episode was seen by most in black and white. The ITV network, like BBC1, began full colour transmissions on 15 November 1969. Daran Little, for many years the official programme archivist, claims that the first episode to be transmitted in colour was episode 930 shown on 24 November 1969. In October 1970, a technicians' dispute turned into the Colour Strike when sound staff were denied a pay rise given to camera staff the year before for working with colour recording equipment. The terms of the work-to-rule were that staff refused to work with the new equipment (though the old black and white equipment had been disposed of by then) and therefore programmes were recorded and transmitted in black and white, including Coronation Street. The dispute was resolved in early 1971 and the last black and white episode was broadcast on 10 February 1971, although the episodes transmitted on 22 and 24 February 1971 had contained black and white location inserts. From 22 March 2010, Coronation Street was produced in 1080/50i for transmission on HDTV platforms on ITV HD. The first transmission in this format was episode 7351 on 31 May 2010 with a new set of titles and re-recorded theme tune. On 26 May 2010 ITV previewed the new HD titles on the Coronation Street website. Due to copyright reasons only viewers residing in the UK could see them on the ITV site. Coronation Street's creator, Tony Warren, wrote the first 13 episodes of the programme in 1960, and continued to write for the programme intermittently until 1976. He later became a novelist, but retained links with Coronation Street. Warren died in 2016. Harry Kershaw was the script editor for Coronation Street when the programme began in 1960, working alongside Tony Warren. Kershaw was also a script writer for the programme and the show's producer between 1962 and 1971. He remains the only person, along with John Finch, to have held the three posts of script editor, writer and producer. Adele Rose was Coronation Street's first female writer and the show's longest-serving writer, completing 455 scripts between 1961 and 1998. She also created Byker Grove. Rose also won a BAFTA award in 1993 for her work on the show. Bill Podmore was the show's longest serving producer. By the time he stepped down in 1988 he had completed 13 years at the production helm. Nicknamed the "godfather" by the tabloid press, he was renowned for his tough, uncompromising style and was feared by both crew and cast alike. He is known for sacking Peter Adamson, the show's Len Fairclough, in 1983. Iain MacLeod is the current series producer. Michael Apted, known for the Up! series of documentaries, was a director on the programme in the early 1960s. This period of his career marked the first of his many collaborations with writer Jack Rosenthal. Rosenthal, noted for such television plays as Bar Mitzvah Boy, began his career on the show, writing over 150 episodes between 1961 and 1969. Paul Abbott was a story editor on the programme in the 1980s and began writing episodes in 1989, but left in 1993 to produce Cracker, for which he later wrote, before creating his own dramas such as Touching Evil and Shameless. Russell T Davies was briefly a storyliner on the programme in the mid-1990s, also writing the script for the direct-to-video special "Viva Las Vegas!" He, too, has become a noted writer of his own high-profile television drama programmes, including Queer as Folk and the 2005 revival of Doctor Who. Jimmy McGovern also wrote some episodes. The show's theme music, a cornet piece, accompanied by a brass band plus clarinet and double bass, reminiscent of northern band music, was written by Eric Spear. The original theme tune was called "Lancashire Blues" and Spear was paid a £6 commission in 1960 to write it. The identity of the trumpeter was not public knowledge until 1994, when jazz musician and journalist Ron Simmonds revealed that it was the Surrey musician Ronnie Hunt. He added, "an attempt was made in later years to re-record that solo, using Stan Roderick, but it sounded too good, and they reverted to the old one." In 2004, the Manchester Evening News published a contradictory story that a young musician from Wilmslow called David Browning had played the original version. However, after investigating further, his story was found to be false, Browning not knowing that the original trumpet player Ronnie Hunt was still alive, proving that he was the true and rightful player that performed the solo. With his union pay stubs and contract, Browning was proven false. A new, completely re-recorded version of the theme tune replaced the original when the series started broadcasting in HD on 31 May 2010. It accompanied a new montage-style credits sequence featuring images of Manchester and Weatherfield. A reggae version of the theme tune was recorded by The I-Royals and released by Media Marvels and WEA in 1983. Episodes in the 1960s, 1970s and 1980s, regularly attracted figures of between 18 and 21 million viewers, and during the 1990s and early 2000s, 14 to 16 million per episode would be typical. Like most terrestrial television in the UK, a decline in viewership has taken place and the show posts an average audience of just under 9 million per episode as of 2013, remaining one of the highest rated programmes in the UK. EastEnders and Coronation Street have often competed for the highest rated show. The episode that aired on 2 January 1985, in which Bet Lynch (Julie Goodyear) finds out she has got the job as manager of the Rovers Return, is the highest-rated single episode in the show's history, attracting 21.40 million viewers. The 25 December 1987 episode, where Hilda Ogden (Jean Alexander) leaves the street to start a new life as a housekeeper for long-term employer Dr Lowther, attracted a combined audience of 26.65 million for its original airing and omnibus repeat on 27 December 1987. This is the second-highest combined rating in the show's history. The show attracted its highest-ever combined rating of 26.93 million for the episode that aired on 15 (and 19) March 1989, where Rita Fairclough (Barbara Knox) is in hospital and Alan Bradley (Mark Eden) is hiding from the police after trying to kill Rita in the previous episode. The regular exterior buildings shown in Coronation Street include a row of terrace houses, several townhouses, and communal areas including a newsagents (The Kabin), a café (Roy's Rolls), a general grocery shop (D&S Alahan's), a factory (Underworld) and Rovers Return Inn public house. The Rovers Return Inn is the main meeting place for the show's characters. Between 1960 and 1968, street scenes were transmitted/taped before a set constructed in a studio, with the house fronts reduced in scale to 3/4 and constructed from wood. In 1968 Granada built an outside set not all that different from the interior version previously used, with the wooden façades from the studio simply being erected on the new site. When the show began broadcasting in colour, these were replaced with brick façades, and back yards were added in the 1970s. In 1982, a permanent full-street set was built in the Granada backlot, an area between Quay Street and Liverpool Road in Manchester. The set was constructed from reclaimed Salford brick. The set was updated in 1989 with the construction of a new factory, two shop units and three modern town houses on the south side of the street. Between 1989 and 1999, the Granada Studios Tour allowed members of the public to visit the set. The exterior set was extended and updated in 1999. This update added to the Rosamund Street and Victoria Street façades, and added a viaduct on Rosamund Street. Most interior scenes are shot in the adjoining purpose-built studio. In 2008, Victoria Court, an apartment building full of luxury flats, was started on Victoria Street. In 2014, production moved to a new site at Trafford Wharf, a former dock area about two miles to the east, part of the MediaCityUK complex. The Trafford Wharf backlot is built upon a former truck stop site next to the Imperial War Museum North. It took two years from start to finish to recreate the iconic Street. The houses were built to almost full scale after previously being three-quarter size. On 5 April 2014, the staff began to allow booked public visits to the old Quay Street set. An advert, with a voiceover from Victoria Wood, appeared on TV to advertise the tour. The tour was discontinued in December 2015. On 12 March 2018, the extension of the Victoria Street set was officially unveiled. The new set featured a garden, featuring a memorial bench paying tribute to the 22 victims of the Manchester Arena bombing, including Coronation Street "super fan" Martyn Hett. The precinct includes a Greater Manchester Police station called Weatherfield Police station. As part of a product placement deal between three companies and ITV Studios, new additions include a tram stop station which is named Weatherfield North with Transport for Greater Manchester Metrolink branding, while shop front facades of Costa Coffee and the Weatherfield branded Co-op Food store interior scenes have been screened. Exterior scenes at the new set first aired on 20 April 2018. On 20 April 2018, ITV announced that they had been granted official approval of planning permission to allow booked public visits to the MediaCityUK Trafford Wharf set. Tours commenced on weekends from 26 May 2018 onwards. The set was further expanded in March 2022, with the addition of the Weatherfield Precinct, which took six months to build, and was inspired by Salford. The new section of the set included a two-storey construction featuring maisonettes, a staircase and balcony leading to the properties, a piazza and an array of shops and units. For 60 years, Coronation Street has remained at the centre of ITV's prime time schedule. The programme is currently shown in the UK in three hour-long episodes, over three evenings a week on ITV in the 8 pm time slot - Mondays, Wednesdays and Fridays. Additional episodes have been broadcast at other times, such as between 22 and 26 November 2004, when eight episodes were shown. Occasional late night episodes of Coronation Street begin at 10 pm, due to the watershed. From Friday 9 December 1960 until Friday 3 March 1961, the programme was shown in two episodes broadcast on Wednesday and Friday at 7 pm. Schedules were changed, and from Monday 6 March 1961 until Wednesday 11 October 1989, the programme was shown in two episodes broadcast Monday and Wednesday at 7:30 pm. A third weekly episode was introduced on Friday 20 October 1989, broadcast at 7:30 pm. From 1996, an extra episode was broadcast at 7:30 pm on Sunday nights. Aside from Granada, the programme originally appeared on the following stations of the ITV network: Anglia Television, Associated-Rediffusion, Television Wales and the West, Scottish Television, Southern Television and Ulster Television. From episode 14 on Wednesday 25 January 1961, Tyne Tees Television broadcast the programme. That left ATV in the Midlands as the only ITV station not carrying the show. When they decided to broadcast the programme, national transmission was changed from Wednesday and Friday at 7 pm to Monday and Wednesday at 7:30 pm and the programme became fully networked under this new arrangement from episode 25 on Monday 6 March 1961. As the ITV network grew over the next few years, the programme was transmitted by these new stations on these dates onward: Westward Television from episode 40 on 1 May 1961, Border Television from episode 76 on 4 September 1961, Grampian Television from episode 84 on 2 October 1961, Channel Television from episode 180 on 3 September 1962 and Teledu Cymru (north and west Wales) from episode 184 on 17 September 1962. At this point, the ITV network became complete and the programme was broadcast almost continuously across the country at 7:30 pm on Monday and Wednesday for the next twenty-eight years. From episode 2981 on Friday 20 October 1989 at 7:30 pm, a third weekly episode was introduced and this increased to four episodes a week from episode 4096 on Sunday 24 November 1996, again at 7:30 pm. A second Monday episode was introduced in 2002 and was broadcast at 8:30 pm to usher in the return of Bet Lynch. The Monday 8:30 pm episode was used intermittently during the popular Richard Hillman storyline and became a regular feature from episode 5568 on Monday 25 August 2003. In January 2008, ITV axed the Sunday episode, and instead aired a second episode on Fridays, at 8:30 pm, with the final Sunday episode airing on 6 January 2008. From 23 July 2009 to September 2012 the Wednesday show was replaced with an episode at 8:30 pm on Thursdays. A sixth weekly episode was added on Wednesdays at 8:30 pm from 20 September 2017. In March 2020, it was revealed that episodes that were currently filming for future broadcast (as episodes are filmed a few weeks in advance) during the COVID-19 pandemic would be shown differently. Instead of six episodes a week, only three episodes would be broadcast, airing as normal on a Monday, Wednesday and Friday at the normal timeslot of 7:30 pm. The actions provided would be made effective starting from 30 March. Simultaneously, the announcement also mentioned that the elderly cast of the show would be "written off" due to health advice issued by Public Health England and the NHS. On 22 March, ITV released a statement confirming that filming of both Coronation Street and Emmerdale was suspended. In June 2020, ITV announced that filming would resume on 9 June. However, due to the new health and safety measures, cast members over the age of 70 or with underlying health conditions did not come back on set, until the production could determine it is safe for them to return. In July 2020, ITV announced that Coronation Street would return to the normal output of six episodes a week in September that year. In October 2020, Maureen Lipman and David Neilson made their first appearances since July that year, as all cast members over the age of 70 had temporarily left the series earlier in the year. William Roache, Barbara Knox and Sue Nicholls returned in December. On 22 January 2021, ITV announced that filming would be suspended from 25 January in order to rewrite "stories and scripts as a consequence of the coronavirus pandemic" and to "review all health and safety requirements". ITV also confirmed that this decision would not affect their ability to deliver six episodes a week. In January 2022, it was announced that after 60 years in the 7.30 pm slot, Coronation Street's transmission time would move to 8 pm due to the ITV Evening News having a longer duration, pushing Emmerdale into the 7.30 pm slot on weeknights. The double-bill episodes on Mondays, Wednesdays and Fridays have merged into hour-long slots on these days. The new scheduling went live on Monday 7 March 2022. Repeat episodes, omnibus broadcasts and specials have been shown on various ITV channels. After several years on ITV2, in January 2008 the omnibus returned to the main ITV channel, where it was aired on Saturday mornings or afternoons, depending on the schedule and times. In May 2008, it moved to Sunday mornings, until August 2008, when it returned to Saturdays. In January 2009, it moved back to Sunday mornings, usually broadcasting at around 9.25am until December 2010. In January 2011, the omnibus moved to Saturday mornings on ITV at 9.25am. During the Rugby World Cup, which took place in New Zealand, matches had to be broadcast on a Saturday morning, so the omnibus moved to Saturday lunchtimes/afternoons during September and October 2011. On 22 October 2011, the omnibus moved back to Saturday mornings at 9.25am on ITV. In January 2012, the omnibus moved to ITV2, and then moved to ITV3 in January 2020. In January 2022, the omnibus moved back to ITV2. Older episodes were broadcast by satellite and cable channel Granada Plus from its launch in 1996. The first episodes shown were from episode 1588 (originally transmitted on Monday 5 April 1976) onwards. Originally listed and promoted as Classic Coronation Street, the "classic" was dropped in early 2002, at which stage the episodes were from late 1989. By the time of the channel's closure in 2004, the repeats had reached February 1994. In addition to this, "specials" were broadcast on Saturday afternoons in the early years of the channel, with several episodes based on a particular theme or character(s) shown. The last episode shown in these specials was from 1991. In addition, on 27 and 28 December 2003, several Christmas Day editions of the show were broadcast. ITV3 began airing afternoon timeslot sequential reruns of Classic Coronation Street from 2 October 2017. Two classic episodes were retransmitted from Mondays to Fridays at 2:40 pm until 3:45 pm, starting from episode 2587 (originally transmitted on Wednesday 15 January 1986) onwards. To mark the 60th anniversary of Coronation Street, between 7 and 11 December 2020 at 10:00 pm–11:05 pm, ITV3 aired special episodes of the soap including Episode 1, the tenth anniversary episode from December 1970, two episodes from the twentieth anniversary in December 1980, two episodes from the thirtieth anniversary in December 1990, the 2000 live episode from the fortieth anniversary in December 2000, and the fiftieth anniversary episode which aired after a repeat of The Road to Coronation Street. On Easter Monday 2022, to commemorate the upcoming 90th birthday of William Roache, eight special Coronation Street Ken Barlow episodes were aired on 18 April 2022, at 10:25 am–2:35 pm. The episodes shown were Episode 1 from December 1960, Ken and Deirdre Tie the Knot from July 1981, Ken's Affair from December 1989, Deirdre's Fling from January 2003, Steve and Karen's Wedding Shocker from February 2004, Ken and Deirdre's Second Wedding from April 2005, Ken and Deirdre's Holiday from August 2014, and Deirdre's Death from July 2015. Coronation Street is shown in various countries worldwide. YouTube has the first episode and many others available as reruns. The programme was first aired in Australia in 1963 on TCN-9 Sydney, GTV-9 Melbourne and NWS-9 Adelaide, and by 1966 Coronation Street was more popular in Australia than in the UK. The show eventually left free-to-air television in Australia. It briefly returned to the Nine Network in a daytime slot during 1994–1995. In 2005, STW-9 Perth began to show episodes before the 6 pm news to improve the lead in to Nine News Perth, but this did not work and the show was cancelled a few months later. In 1996, pay-TV began and Arena began screening the series in one-hour instalments on Saturdays and Sundays at 6:30 pm EST. The series was later moved to pay-TV channel UKTV (now BBC UKTV), where it is still shown. Coronation Street is shown Mon-Thu at 7:20 pm EST and a double episode on Fridays, with episodes on the channel being one week behind UK broadcast. In Canada, Coronation Street is broadcast on CBC Television. Until 2011, episodes were shown in Canada approximately 10 months after they aired in Britain; however, beginning in the fall of 2011, the CBC began showing two episodes every weekday, in order to catch up with the ITV showings, at 6:30 pm and 7 pm local time Monday-Friday, with an omnibus on Sundays at 7.30am. By May 2014, the CBC was only two weeks behind Britain, so the show was reduced to a single showing weeknights at 6:30 pm local time. The show debuted on Toronto's CBLT in July 1966. The 2002 edition of the Guinness Book of Records recognises the 1,144 episodes sold to the now-defunct CBC-owned Saskatoon, Saskatchewan, TV station CBKST by Granada TV on 31 May 1971 to be the largest number of TV shows ever purchased in one transaction. The show traditionally aired on weekday afternoons in Canada, with a Sunday morning omnibus. In 2004, CBC moved the weekday airings from their daytime slot to prime time. In light of austerity measures imposed on the CBC in 2012, which includes further cutbacks on non-Canadian programming, one of the foreign shows to remain on the CBC schedule is Coronation Street, according to the CBC's director of content planning Christine Wilson, who commented: "Unofficially I can tell you Coronation Street is coming back. If it didn't come back, something would happen on Parliament Hill." Kirstine Stewart, the head of the CBC's English-language division, once remarked: "Coronation Street fans are the most loyal, except maybe for curling viewers, of all CBC viewers." As of mid 2022, Canada is about three weeks behind the UK and airs six episodes per week. In the Republic of Ireland, Coronation Street is currently shown on Virgin Media One. The show was first aired in 1978, when RTÉ2 began showing episodes from 1976, although Ireland caught up with the current UK episodes in 1983. In 1992 it moved to RTÉ One, but in 2001 Granada TV bought 45 percent of TV3, and so TV3 broadcast the series from 2001 to 2014. In 2006, ITV sold its share of the channel but TV3 continued to buy the soap until the end of 2014 when it moved to UTV Ireland. Coronation Street has broadcast on each of the main Irish networks, except for the Irish language network TG4. In December 2016, Coronation Street returned to TV3 (now Virgin Media One). The show is consistently the channel's most viewed programme every week. Two Dutch stations have broadcast Coronation Street: VARA showed 428 episodes between 1967 and 1975, and SBS6 ran the show for a period starting in 2010. From 2006 the series was also broadcast by Vitaya, a small Flemish Belgian channel. In New Zealand, Coronation Street has been shown locally since 1964, first on NZBC television until 1975, and then on TV One, which broadcasts it in a 4-episode/2-hour block on Fridays from 7:30 pm. In September 2014, TV One added a 2-episode/1-hour block on Saturday from 8:30 pm. Because TV One did not upgrade to showing the equivalent of five or six episodes per week, New Zealand continued to fall further and further behind with episodes, and was 23 months behind Britain as of March 2014. During the weekday nights of the week ending 11 April 2014 and previous weeks, Coronation Street was the least watched programme on TV One in the 7:30 pm slot by a considerable margin in comparison to other weeknights, The serial aired on Tuesdays and Thursdays at 7:30 pm until October 2011, when the show moved to a 5:30 pm half-hour slot every weekday. The move proved unpopular with fans, and the series was quickly moved into its present prime-time slot within weeks. Episodes 7883, 7884, 7885 and 7886 were screened on 16 May 2014. These were originally aired in the UK between 4 and 11 June 2012. On 10 May 2018 it was announced that the current 2016 episodes would be moved to 1 p.m. Monday-Friday titled 'Catch-up Episodes' and for primetime Wednesday-Friday express episodes would be airing in New Zealand a week behind the United Kingdom titled '2018 Episodes' these changes would be taking place from 11 June 2018. In South Africa, Coronation Street episodes were broadcast three days after the UK air date on ITV Choice until the channel ceased broadcasting in June 2020, episodes temporarily went off the air until they moved to M-Net City, starting in October 2020. In the United States, Coronation Street is available by broadcast or cable only in northern markets where CBC coverage from Canada overlaps the border or is available on local cable systems. It was broadcast on CBC's US cable channel, Trio until the CBC sold its stake in the channel to Universal, before it was shut down in 2006. Beginning in 2009, episodes were available in the United States through Amazon.com's on-demand service, a month behind their original UK airdates. The final series of shows available from Amazon appears to be from November 2012, as no new episodes have been uploaded. On 15 January 2013, online distributor Hulu began airing episodes of the show, posting a new episode daily, two weeks after their original airdates. For a time, Hulu's website stated: "New episodes of Coronation Street will be unavailable as of April 7th, 2016", with the same being said for British soap Hollyoaks, but Hulu is once again showing new episodes of Coronation Street as of April 2017, two weeks behind the UK airdate. The BBC/ITV service Britbox shows new episodes on the same day as the UK airing. Coronation Street was also shown on USA Network for an unknown period starting in 1982. HM Forces and their families stationed overseas can watch Coronation Street on ITV, carried by the British Forces Broadcasting Service, which is also available to civilians in the Falkland Islands. It used to be shown on BFBS1. Satellite channel ITV Choice showed the programme in Asia, Middle East, Cyprus, and Malta, before the channel ceased broadcasting in 2019. The Street, a magazine dedicated to the show, was launched in 1989. Edited by Bill Hill, the magazine contained a summary of recent storylines, interviews, articles about classic episodes, and stories that occurred from before 1960. The format was initially A5 size, expanding to A4 from the seventh issue. The magazine folded after issue 23 in 1993 when the publisher's contract with Granada Studios Tour expired and Granada wanted to produce their own magazine. On 25 June 2010, a video game of the show was released on Nintendo DS. The game was developed by Mindscape, and allowed players to complete tasks in the fictitious town of Weatherfield. In 1995, to commemorate the programme's 35th anniversary, a CD titled The Coronation Street Album was released, featuring cover versions of modern songs and standards by contemporary cast members. The album charted a Top 40 hit when "The Coronation Street Single" (a double a-side featuring a cover of Monty Python's "Always Look on the Bright Side of Life" by Bill Waddington – with various cast members on backing vocals – on one side and "Something Stupid" by Johnny Briggs & Amanda Barrie on the other) reached number 35 in the Official UK charts. In 2010, an album featuring songs sung by cast members was released to celebrate 50 years of Coronation Street. The album is titled Rogues, Angels, Heroes & Fools, and was later developed into a musical. Granada launched one spin-off in 1965, Pardon the Expression, following the story of clothing store manager Leonard Swindley (Arthur Lowe) after he left Weatherfield. Swindley's management experience was tested when he was appointed assistant manager at a fictional department store, Dobson and Hawks. Granada produced two series of the spin-off, which ended in 1966. In 1967, Arthur Lowe returned as Leonard Swindley in Turn Out the Lights, a short-lived sequel to Pardon the Expression. It ran for just one series of six episodes before it was cancelled. From 1985 to 1988 Granada TV produced a sitcom called The Brothers McGregor featuring a pair of half-brothers (one black, one white) who had appeared in a single episode of Coronation Street as old friends of Eddie Yeats and guests at his wedding. The original actors were unavailable so the characters were recast with Paul Barber and Philip Whitchurch. The show ran for 26 episodes over four series. In 1985, a sister series, Albion Market was launched. It ran for one year, with 100 episodes produced. In 2010, several actors from the show appeared on The Jeremy Kyle Show as their soap characters: David Platt (Jack P. Shepherd), Nick Tilsley (Ben Price), Tina McIntyre (Michelle Keegan) and Graeme Proctor (Craig Gazey). In the fictional, semi-improvised scenario, David accused Nick (his brother) and Tina (his ex-girlfriend) of sleeping together. Coronation Street and rival soap opera EastEnders had a crossover for Children in Need in November 2010 called "East Street". EastEnders stars that visited Weatherfield include Laurie Brett as Jane Beale, Charlie G. Hawkins as Darren Miller, Kylie Babbington as Jodie Gold, Nina Wadia as Zainab Masood and John Partridge as Christian Clarke. On 21 December 2012, Coronation Street produced a Text Santa special entitled A Christmas Corrie which featured Norris Cole in the style of Scrooge, being visited by the ghosts of dead characters. The ghosts were Mike Baldwin, Maxine Peacock, Derek Wilton and Vera Duckworth. Other special guests include Torvill and Dean, Lorraine Kelly and Sheila Reid. The episode concluded with Norris learning the error of his ways and dancing on the cobbles. The original plan for this feature was to have included Jack Duckworth, along with Vera, but actor Bill Tarmey died before filming commenced. In the end a recording of his voice was played. Coronation Street: Family Album was several documentaries about various families living on the street. "Farewell ..." was several documentaries featuring the best moments of a single character who had recently left the series—most notably, Farewell Mike (Baldwin), Farewell Vera (Duckworth), Farewell Blanche (Hunt), Farewell Jack (Duckworth), Farewell Janice (Battersby), Farewell Liz (McDonald), Farewell Becky (McDonald), and Farewell Tina (McIntyre). Most of these were broadcast on the same day as the character's final scenes in the series. Stars on the Street was aired around Christmas 2009. It featured actors from the soap talking about the famous guest stars who had appeared in the series including people who were in it before they were famous. In December 2010, ITV made a few special programmes to mark the 50th anniversary. Coronation Street Uncovered: Live, hosted by Stephen Mulhern was shown after the episode with the tram crash was aired on ITV2. On 7 and 9 December a countdown on the greatest Corrie moments, Coronation Street: 50 Years, 50 Moments, the viewers voted "The Barlows at Alcoholics Anonymous" as the greatest moment. On 10 December Paul O'Grady hosted a quiz show, Coronation Street: The Big 50 with three teams from the soap and a celebrity team answering questions about Coronation Street and other soaps. Also, Come Dine with Me and Celebrity Juice aired Coronation Street specials in the anniversary week. The German TV series Lindenstraße took Coronation Street as the model. Lindenstraße started in 1985 and broadcast its final episode on 29 March 2020, after airing for nearly 35 years. Over the years, Coronation Street has released several straight-to-video films. Unlike other soaps, which often used straight-to-video films to cover more contentious plot lines that may not be allowed by the broadcaster, Coronation Street has largely used these films to reset their characters in other locations. In 1995, Coronation Street: The Cruise also known as Coronation Street: The Feature Length Special was released on VHS to celebrate the 35th anniversary of the show, featuring Rita Sullivan, Mavis Wilton, Alec Gilroy, Curly Watts and Raquel Watts. ITV heavily promoted the programme as a direct-to-video exclusive, but broadcast a brief version of it on 24 March 1996. The Independent Television Commission investigated the broadcast, as viewers complained that ITV misled them. In 1997, following the controversial cruise spin-off, Coronation Street: Viva Las Vegas! was released on VHS, featuring Vera Duckworth, Jack Duckworth, Fiona Middleton and Maxine Peacock on a trip to Las Vegas, which included the temporary return of Ray Langton. In 1999, six special episodes of Coronation Street were produced, following the story of Steve McDonald and Vikram Desai in Brighton, which included the temporary returns of Bet Gilroy, Reg Holdsworth and Vicky McDonald. This video was titled Coronation Street: Open All Hours and released on VHS. In 2008, ITV announced filming was to get underway for a new special DVD episode, Coronation Street: Out of Africa, featuring Kirk Sutherland, Fiz Brown, Chesney Brown, which included the temporary return of Cilla Battersby-Brown. Sophie Webster, Becky Granger and Tina McIntyre also make brief appearances. In 2009, another DVD special, Coronation Street: Romanian Holiday, was released. The feature-length comedy drama followed Roy, Hayley and Becky as they travelled to Romania for the wedding of a face from their past. Eddie Windass also briefly appears. The BBC commissioned a one-off drama called The Road to Coronation Street, about how the series first came into being. Jessie Wallace plays Pat Phoenix (Elsie Tanner) with Lynda Baron as Violet Carson (Ena Sharples), Celia Imrie as Doris Speed (Annie Walker) and James Roache as his own father William Roache (Ken Barlow). It was broadcast on 16 September 2010 on BBC Four. On 1 November 2010, Coronation Street: A Knight's Tale was released. Reg Holdsworth and Curly Watts returned in the film. Mary tries to take Norris to an apparently haunted castle where she hoped to seduce him. Rosie gets a job there and she takes Jason with her. Brian Capron also guest starred as an assumed relative of Richard Hillman. He rises out of a lake with a comedic "wink to the audience" after Hillman drowned in 2003. Rita Sullivan also briefly appears. On 21 December 2008, a web-based miniseries ran on ITV.com; called Corrie Confidential; the first episode featured the characters Rosie and Sophie Webster in Underworld. ITV.com launched a small spin-off drama series called 'Gary's Army Diaries' which revolves around Gary Windass's experiences in Afghanistan and the loss of his best friend, Quinny. Due to their popularity, the three five-minute episodes were recut into a single 30-minute episode, which was broadcast on ITV2. William Roache and Anne Kirkbride starred as Ken and Deirdre in a series of ten three-minute internet 'webisodes'. The first episode of the series titled, Ken and Deirdre's Bedtime Stories was activated on Valentine's Day 2011. In 2011, an internet based spin-off starring Helen Flanagan as Rosie Webster followed her on her quest to be a supermodel called Just Rosie. On 3 February 2014, another web-based miniseries ran on ITV.com; called Streetcar Stories. It showed what Steve and Lloyd get up to during the late nights in their Streetcar cab office. The first episode shows Steve and Lloyd making a cup of tea with "The Stripper" playing in the background, referencing Morecambe and Wise's Breakfast Sketch. The second episode involves the pair having a biscuit dunking competition. During the 'Who Attacked Ken' storyline, a mini series of police files was run on the official Coronation Street YouTube channel. They outlined the suspects' details and possible motives. In August 2010, many Coronation Street characters were brought to the stage in Jonathan Harvey's comedy play Corrie!. The play was commissioned to celebrate the 50th Anniversary of the TV series and was presented at The Lowry in Salford, England by ITV Studios and Phil McIntyre Entertainments. Featuring a cast of six actors who alternate roles of favourite characters including Ena Sharples, Hilda Ogden, Hayley and Roy, Richard Hillman, Jack and Vera, Bet Lynch, Steve, Karen and Becky, the play weaves together some of the most memorable moments from the TV show. It toured UK theatres between February 2011 and July 2011 with guest star narrators including Roy Barraclough, Ken Morley and Gaynor Faye. The British rock band Queen produced a single "I Want to Break Free" in 1984 that reached number 3 in the UK Singles Chart. The song is memorable for its music video in which the band members dressed in women's clothing, which parodied characters in Coronation Street and is considered an homage to the show. The video depicts Freddie Mercury as a housewife, loosely based on Bet Lynch, who wants to "break free" from his life. Although Lynch was a blonde in the soap opera, Mercury thought he would look too silly as a blonde and chose a dark wig. Guitarist Brian May plays another, more relaxed housewife based on Hilda Ogden. In December 2022, the American singer Bob Dylan was offered a cameo on Coronation Street after revealing to The Wall Street Journal that he is a fan of the ITV soap. Cadbury was the first sponsor of Coronation Street, beginning in July 1996. In the summer of 2006, Cadbury Trebor Bassetts had to recall over one million chocolate bars, due to suspected salmonella contamination, and Coronation Street stopped the sponsorship for several months. In 2006, Cadbury did not renew their contract, but agreed to sponsor the show until Coronation Street found a new sponsor. Harveys then sponsored Coronation Street from 30 September 2007 until December 2012. In the Coronation Street: Romanian Holiday film, Roy and Hayley Cropper are filmed in front of a Harveys store, and in Coronation Street: A Knights Tale, a Harveys truck can be seen driving past Mary Taylor's motorhome. Compare The Market took over as sponsor from 26 November 2012 until 30 November 2020. On 10 December 2020, it was announced that Argos would be the new sponsor of Coronation Street, starting on 1 January 2021. In November 2011, a Nationwide Building Society ATM in Dev Alahan's corner shop became the first use of paid-for product placement in a UK primetime show. In 2018, the shop fronts of Co-Op and Costa Coffee were added to the sets, along with characters using shopping bags with the respective logos on as props. Hyundai have been the sponsor since January 2015 in the Republic of Ireland, aired on Virgin Media One.	[ { "paragraph_id": 0, "text": "Coronation Street (colloquially referred to as Corrie) is a British television soap opera created by Granada Television and shown on ITV since 9 December 1960. The programme centres on a cobbled, terraced street in the fictional Weatherfield, a town based on inner-city Salford, England.", "title": "" }, { "paragraph_id": 1, "text": "Originally broadcast twice weekly, the series began airing six times a week in 2017. The programme was conceived by scriptwriter Tony Warren. Warren's initial proposal was rejected by the station's founder Sidney Bernstein, but he was persuaded by producer Harry Elton to produce the programme for 13 pilot episodes. The show has since become a significant part of British culture.", "title": "" }, { "paragraph_id": 2, "text": "Coronation Street is made by Granada's successor, ITV Studios, at MediaCityUK and shown in all ITV regions, as well as internationally. In 2010, upon its 50th anniversary, the series was recognised by Guinness World Records as the world's longest-running television soap opera. Initially influenced by the conventions of kitchen-sink realism, Coronation Street is noted for its depiction of a down-to-earth, working-class community, combined with light-hearted humour and strong characters. The show currently averages around five million viewers per episode. The show premiered its 10,000th episode on 7 February 2020, and celebrated its 60th anniversary later that year.", "title": "" }, { "paragraph_id": 3, "text": "The first episode was aired on 9 December 1960 at 7 pm, and was not initially a critical success; Daily Mirror columnist Ken Irwin claimed the series would only last three weeks. Granada Television had commissioned only 13 episodes, and some inside the company doubted the show would last beyond its planned production run. Despite the criticism, viewers were immediately drawn into the serial, won over by Coronation Street's ordinary characters. The programme also made use of Northern English language and dialect; affectionate local terms like \"eh, chuck?\", \"nowt\" (/naʊt/, from nought, meaning nothing), and \"by 'eck!\" became widely heard on British television for the first time.", "title": "History" }, { "paragraph_id": 4, "text": "Early episodes told the story of student Ken Barlow (William Roache), who had won a place at university, so found his working-class background — as well as his younger brother David (Alan Rothwell) and his parents, Frank (Frank Pemberton) and Ida (Noel Dyson) — something of an embarrassment. The character was one of the few to have experienced much of life outside of Coronation Street. In some ways, this predicts the growth of globalisation. In an episode from 1961, Barlow declares: \"You can't go on just thinking about your own street these days. We're living with people on the other side of the world. There's more to worry about than Elsie Tanner (Pat Phoenix) and her boyfriends.\" Roache is the only remaining member of the original cast, which makes him the longest-serving actor in Coronation Street, and in British and global soap history.", "title": "History" }, { "paragraph_id": 5, "text": "In March 1961, Coronation Street reached number one in the television ratings and remained there for the rest of the year. Earlier in 1961, a television audience measurement (TAM) showed that 75% of available viewers (15 million) tuned into Corrie, and by 1964, the programme had over 20 million regular viewers, with ratings peaking on 2 December 1964, at 21.36 million viewers. In spite of rising popularity with viewers, Coronation Street was criticised by some for its outdated portrayal of the urban working class, and its representation of a community that was a nostalgic fantasy. After the first episode in 1960, the Daily Mirror printed: \"The programme is doomed from the outset ... For there is little reality in this new serial, which apparently, we have to suffer twice a week.\"", "title": "History" }, { "paragraph_id": 6, "text": "In 1964, Coronation Street appointed a new producer, Tim Aspinall. Aspinall decided on a new broom policy and the \"Bloody Purge\" of 1964 began, with nine actors being sacked in total. The first cast member to be written out was Lynne Carol, who had played Martha Longhurst since episode two and the preview of the programme. Her sacking was so controversial that fellow actress Violet Carson (Ena Sharples) threatened to quit, but she was eventually persuaded not to. The media reported extensively on the storyline, and when Lynne Carol took a private trip to the Daily Mail Ideal Home Exhibition in London, she was mobbed by fans and asked to leave on the grounds of public safety. Many, including Coronation Street writer H.V. Kershaw, saw the killing of Martha as a desperate move to boost viewer ratings.", "title": "History" }, { "paragraph_id": 7, "text": "By 1968, critics were suggesting that the programme no longer reflected life in 1960s Britain, a decade that had seen significant economic and social change in the nation. Granada hurried to update the programme, with the hope of introducing more issue-driven stories, including Lucille Hewitt (Jennifer Moss) becoming addicted to drugs, Jerry Booth (Graham Haberfield) being in a storyline about homosexuality, Emily Nugent (Eileen Derbyshire) having an out-of-wedlock child, and introducing a black family, but all of these ideas were dropped for fear of upsetting viewers.", "title": "History" }, { "paragraph_id": 8, "text": "The show's production team was tested when many core cast members left the programme in the early 1970s. When Arthur Leslie died suddenly in 1970, his character, Rovers landlord Jack Walker, died off screen shortly afterwards. Anne Reid quit as Valerie Barlow; her character was killed off in 1971, electrocuting herself with a faulty hairdryer. Ratings reached a low of eight million in February 1973, when Pat Phoenix quit as Elsie Tanner and Doris Speed (Annie Walker) took two months' leave due to bereavement. The audience of ITV's other flagship soap opera Crossroads increased markedly at this time, as its established cast, such as Meg Richardson (Noele Gordon), grew in popularity. These sudden departures forced the writing team to quickly develop characters who had previously stood in the background. The roles of mostly younger characters including Bet Lynch (Julie Goodyear), Deirdre Hunt (Anne Kirkbride), Rita Littlewood (Barbara Knox), Mavis Riley (Thelma Barlow) and Ivy Tyldesley (Lynne Perrie) were built up between 1972 and 1973 (with Perrie's character being renamed to the better-known \"Tilsley\"), and characters such as Gail Potter (Helen Worth), Blanche Hunt (Patricia Cutts/Maggie Jones), and Vera Duckworth (Liz Dawn) first appearing in 1974. These characters would remain at the centre of the programme for many years, with Gail still being in the show nearly half a century after her first appearance. Comic storylines had been popular in the series in the 1960s but had become sparse during the early 1970s. These were re-introduced by new producer Bill Podmore who joined the series in 1976. He had worked on Granada comedy productions prior to his appointment.", "title": "History" }, { "paragraph_id": 9, "text": "In September 1977, the News of the World quoted actor Stephen Hancock (Ernest Bishop) as saying \"The Street kills an actor. I'm just doing a job, not acting. The scriptwriters have turned me into Ernie Bishop. I've tried to resist it but it is very hard not to play the part all the time, even at home.\" This was the first sight the public had of a bitter argument between Hancock and Granada Television. Hancock objected to the cast payment system and threatened to quit the show to safeguard his principles. The main dispute was between Hancock and Podmore, with Podmore being nicknamed 'The Godfather' by the British media. The basis of Hancock's argument was that different actors were guaranteed different numbers of episode appearances per year, thus some were paid more than others. Actors from the earliest days of the programme, including Pat Phoenix, Doris Speed and Peter Adamson, were guaranteed payment for every one of the year's episodes, regardless of whether or not they actually appeared.", "title": "History" }, { "paragraph_id": 10, "text": "Podmore was not willing to change what he called a 'complex and well-established system', leading Hancock to stand by his principles and resign. The problem now shifted, and writers had to write Ernie out but save his wife Emily (Eileen Derbyshire). The decision was made for Ernest to be killed off in a bungled robbery at Mike Baldwin's (Johnny Briggs) factory, where he worked in payroll. Ernest was killed by a single gunshot to the stomach on 11 January 1978. It was the first time that violence on such a scale had been shown on Coronation Street and after the episode was aired, Granada's switchboard was jammed by angry viewers. Letters of complaint arrived in their hundreds, and the Lobby Against TV Violence fiercely objected Granada's decision to broadcast the episode. Granada stated that the storyline was not about violence, but that it aimed to show the desolation and loss felt by Ernest's widow, Emily. Coronation Street had little competition within its prime-time slot, and some critics suggested that the programme had grown complacent, moving away from socially viable storylines, and again presenting a dated view of working-class life.", "title": "History" }, { "paragraph_id": 11, "text": "Peter Adamson, who had played Len Fairclough since 1961, was sacked in 1983 for breach of contract. He had been warned by Granada Television for writing unauthorised newspaper articles criticising the show and cast. Coronation Street producer Podmore sacked Adamson when it was revealed he had sold his memoirs after the previous warning. The sacking coincided with allegations of Adamson having indecently assaulted two young girls. In April 1983, a newspaper reported that Adamson had been arrested for indecently assaulting two eight-year-old girls at a swimming pool. The police complaint was that Adamson's hands had strayed while giving the girls swimming lessons. Granada Television gave Adamson financial support through his legal problems, with a Crown Court jury finding him not guilty in July 1983.", "title": "History" }, { "paragraph_id": 12, "text": "Adamson's dispute over his memoirs and newspaper articles was not known to the public and the media reported that Adamson had been dismissed because of the shame indecent assault allegations had brought onto Granada and the Coronation Street brand. Len Fairclough was killed off-screen in a motorway crash on 7 December 1983. To demonise the character, it was revealed that he had been returning home from an affair, cheating on his wife Rita (Barbara Knox). Adamson celebrated the character's death by delivering an obituary on TV-am dressed as an undertaker.", "title": "History" }, { "paragraph_id": 13, "text": "During 1988, actor Christopher Quinten, who had played Brian Tilsley since 27 December 1978, told bosses at Granada that he was going to move to the United States to marry his then-fiancée, American talk show host Leeza Gibbons and to build an acting career in Los Angeles. In announcing his resignation, Quinten tried to ensure that his role would be left open for him to return in the event that his stint in America failed. At the time, his character was married to Gail and the story conference called to write Brian out struggled to find a justifiable way to write him out while still leaving enough scope for a possible return. The decision was made that Brian should die. Quinten was in Los Angeles when the storyline was decided, and upon his return to the United Kingdom, he was shocked at Brian's fate and threatened to fly back to America so that scenes could not be filmed. He was talked round by co-star Helen Worth, who pointed out that he might be blacklisted by Equity if he quit the programme abruptly. Brian Tilsley's death was broadcast on 15 February 1989. After the breakdown of his marriage to Gail, Brian started spending his evenings going to discos and meeting up with various women. He tried to protect a young lady from a group of thugs outside a nightclub, but was stabbed in the stomach. He died as a result of his injuries. The stabbing brought massive complaints from viewers and Mary Whitehouse delivered an angry sermon about television violence.", "title": "History" }, { "paragraph_id": 14, "text": "Between 1980 and 1989, Coronation Street underwent some of the most radical changes since its launch. By May 1984, William Roache stood as the only original cast member, after the departures of Violet Carson (Ena Sharples) in 1980, Doris Speed (Annie Walker) in 1983, and both Pat Phoenix (Elsie Tanner) and Jack Howarth (Albert Tatlock) in 1984. Albert Tatlock's departure came when his character's off screen death was announced several months after the death of actor Jack Howarth at the age of 88. While the press predicted the end of Corrie, H. V. Kershaw declared that \"There are no stars in Coronation Street. The show had also gained a new rival on Channel 4 with the launch of Brookside, and BBC was preparing to launch EastEnders, which would first air in February 1985.", "title": "History" }, { "paragraph_id": 15, "text": "Writers drew on the show's many archetypes, with established characters stepping into the roles left by the original cast. Phyllis Pearce (Jill Summers) was hailed as the new Ena Sharples in 1982, the Duckworths moved into No.9 in 1983 and slipped into the role once held by the Ogdens, while Percy Sugden (Bill Waddington) appeared in 1983 and took over the grumpy war veteran role from Albert Tatlock. The question of who would take over the Rovers Return after Annie Walker's 1983 exit was answered in 1985 when Bet Lynch (who also mirrored the vulnerability and strength of Elsie Tanner) was installed as landlady. In 1983, Shirley Armitage (Lisa Lewis) became the first major black character in her role as machinist at Baldwin's Casuals.", "title": "History" }, { "paragraph_id": 16, "text": "Ken Barlow married Deirdre Langton (Anne Kirkbride) on 27 July 1981. The episode was watched by over 15 million viewers – more ITV viewers than the wedding of Prince Charles and Lady Diana two days later. In the 1980s relationships were cemented between established characters: Alf Roberts (Bryan Mosley) married Audrey Potter (Sue Nicholls) in 1985; Kevin Webster (Michael Le Vell) married Sally Seddon (Sally Whittaker) in 1986; Bet Lynch married Alec Gilroy (Roy Barraclough) in 1987; and 1988 saw the marriages of widowed Ivy Tilsley to Don Brennan (Geoffrey Hinsliff), and the long-awaited union of Mavis Riley and Derek Wilton (Peter Baldwin), after over a decade of on-off romances and a failed marriage attempt in 1984.", "title": "History" }, { "paragraph_id": 17, "text": "In 1982, the arrival of Channel 4, and its edgy new soap opera Brookside, sparked one of the biggest changes for Coronation Street. Unlike Coronation Street, which had a very nostalgic view of working-class life, Brookside brought together working and middle-class families in a more contemporary environment. The dialogue often included expletives and the stories were more hard-hitting, and of the current Zeitgeist. Whereas stories at this time in Coronation Street were largely about family affairs, Brookside concentrated on social affairs such as industrial action, unemployment, drugs, rape, and the black market. The BBC also introduced a new prime time soap opera, EastEnders in 1985. While ratings for Coronation Street remained consistent throughout the decade, EastEnders regularly obtained higher viewing figures due to its omnibus episodes shown at weekends.", "title": "History" }, { "paragraph_id": 18, "text": "The Coronation Street episode broadcast on 2 January 1985 attracted 21.40 million viewers, making it the most-watched episode in the show's history based on a single showing. Subsequent episodes would achieve higher figures when the original broadcast and omnibus edition figures were combined. With prime time competition, Corrie was again seen as being old fashioned, with the introduction of the 'normal' Clayton family in 1985 being a failure with viewers, being written out the following year. Between 1988 and 1989, many aspects of the show were modernised by new producer David Liddiment. A new exterior set had been built in 1982, and in 1989 it was redeveloped to include new houses and shops. Production techniques were also changed with a new studio being built, and the inclusion of more location filming, which had moved exterior scenes from being shot on film to videotape in 1988. Due to new pressures, an introduction of the third weekly episode aired on 20 October 1989, to broadcast each Friday at 7:30 pm.", "title": "History" }, { "paragraph_id": 19, "text": "The 1980s featured some of the most prominent storylines in the programme's history, such as Deirdre Barlow's affair with Mike Baldwin (Johnny Briggs) in 1983, the first soap storyline to receive widespread media attention. The feud between Ken Barlow and Mike Baldwin would continue for many years, with Mike even marrying Ken's daughter, Susan (Wendy Jane Walker). In 1986, there was a fire at the Rovers Return. The episode that aired on Christmas Day 1987, attracted a combined audience (original and omnibus) of 26.65 million – a figure helped by the fact that this episode heralded the departure of immensely-popular character Hilda Ogden (Jean Alexander). Between 1986 and 1989, the story of Rita Fairclough's (Barbara Knox) psychological abuse at the hands of Alan Bradley (Mark Eden), and then his subsequent death under the wheels of a Blackpool tram in December 1989, was played out. This storyline gave the show its highest combined viewing figure in its history with 26.93 million for the episode that aired on 15 (and 19) March 1989, where Alan is hiding from the police after trying to kill Rita in the previous episode. This rating is sometimes incorrectly credited to the 8 December 1989 tram death episode.", "title": "History" }, { "paragraph_id": 20, "text": "In spite of updated sets and production changes, Coronation Street still received criticism. In 1992, chairman of the Broadcasting Standards Council, Lord Rees-Mogg, criticised the low representation of ethnic minorities, and the programme's portrayal of the cosy familiarity of a bygone era, particularly as many comparable neighbours in the real life Greater Manchester area had a significant percentage of black and Asian residents. Some newspapers ran headlines such as \"Coronation Street shuts out blacks\" (The Times), and \"'Put colour in t'Street\" (Daily Mirror). Patrick Stoddart of The Times wrote: \"The millions who watch Coronation Street – and who will continue to do so despite Lord Rees-Mogg – know real life when they see it ... in the most confident and accomplished soap opera television has ever seen\". Black and Asian characters had appeared from time to time over the years, but it was not until 1999 that the show featured its first regular non-white family, the Desai family.", "title": "History" }, { "paragraph_id": 21, "text": "New characters Des (Philip Middlemiss) and Steph Barnes (Amelia Bullmore) moved into one of the new houses in 1990, being dubbed by the media as Yuppies. Raquel Wolstenhulme (Sarah Lancashire) first appeared at the beginning of 1991 and went on to become one of the most popular characters of the era until her departure in 1996, followed by a brief comeback four years later. The McDonald family were developed and the fiery relationships between Liz (Beverly Callard), Jim (Charles Lawson), Steve (Simon Gregson) and Andy (Nicholas Cochrane) interested viewers. Other newcomers were wheelchair user and pensioner Maud Grimes (Elizabeth Bradley), middle-aged cafe owner Roy Cropper (David Neilson), young married couple Gary and Judy Mallett (Ian Mercer and Gaynor Faye), as well as middle-aged butcher Fred Elliott (John Savident) and his son Ashley Peacock (Steven Arnold). The amount of slapstick and physical humour in storylines increased during the 1990s, with comical characters such as supermarket manager Reg Holdsworth (Ken Morley) and his water bed.", "title": "History" }, { "paragraph_id": 22, "text": "In 1997, Brian Park took over as producer, with the idea of promoting young characters as opposed to the older cast. On his first day, he cut the characters of Derek Wilton (Peter Baldwin), Don Brennan (Geoffrey Hinsliff), Percy Sugden (Bill Waddington), Bill Webster (Peter Armitage), Billy Williams (Frank Mills) and Maureen Holdsworth (Sherrie Hewson). Thelma Barlow, who played Derek's wife Mavis, was angered by the firing of her co-star and resigned. The production team lost some of its key writers when Barry Hill, Adele Rose and Julian Roach all resigned as well.", "title": "History" }, { "paragraph_id": 23, "text": "In line with Park's suggestion, younger characters were introduced during 1997 and 1998. A teenage Nick Tilsley was recast, played by Adam Rickitt following the departure of original actor Warren Jackson, single mother Zoe Tattersall (Joanne Froggatt) first appeared, and the problem Battersby family moved into No.5. Storylines focussed on tackling 'issues', such as drug dealers, eco-warriors, religious cults, and a transsexual woman. Park quit in 1998, after deciding that he had done what he intended to do; he maintained that his biggest achievement was the introduction of Hayley Patterson (Julie Hesmondhalgh), the first transgender character in a British soap. The character married Roy Cropper soon after her arrival.", "title": "History" }, { "paragraph_id": 24, "text": "Some viewers were alienated by the new Coronation Street, and sections of the media voiced their disapproval. Having received criticism of being too out of touch, Corrie now struggled to emulate the more modern Brookside and EastEnders. In the Daily Mirror, Victor Lewis-Smith wrote: \"Apparently it doesn't matter that this is a first-class soap opera, superbly scripted and flawlessly performed by a seasoned repertory company.\" One of Coronation Street's best known storylines took place in March/April 1998, with Deirdre Rachid (Anne Kirkbride) being wrongfully imprisoned after a relationship with con-man Jon Lindsay (Owen Aaronovitch). The episode in which Deirdre was sent to prison had an audience of 19 million viewers, and 'Free the Weatherfield One' campaigns sprung up in a media frenzy. Then Prime Minister Tony Blair even passed comment on Deirdre's sentencing in Parliament. Deirdre was freed after three weeks, with Granada stating that they had always intended for her to be released, in spite of the media interest.", "title": "History" }, { "paragraph_id": 25, "text": "On 8 December 2000, the show celebrated its 40th anniversary by broadcasting a live, hour-long episode. King Charles III (then Prince of Wales) appeared as himself in an ITV News bulletin report. Earlier in the year, 13-year-old Sarah-Louise Platt (Tina O'Brien) had become pregnant and given birth to a baby girl, Bethany, on 4 June. The February episode where Gail was told of her daughter's pregnancy was watched by 15 million viewers. From 1999 to 2001, issue-led storylines were introduced such as Toyah Battersby's (Georgia Taylor) rape, Roy and Hayley Cropper (David Neilson and Julie Hesmondhalgh) abducting their foster child, Sarah Platt's Internet chat room abduction and Alma Halliwell's (Amanda Barrie) death from cervical cancer. Such storylines were unpopular with viewers and ratings dropped and in October 2001, Macnaught was abruptly moved to another Granada department and Carolyn Reynolds took over. In 2002, Kieran Roberts was appointed as producer and aimed to re-introduce \"gentle storylines and humour\", after deciding that the Street should not try to compete with other soaps.", "title": "History" }, { "paragraph_id": 26, "text": "In July 2002, Gail married Richard Hillman (Brian Capron), a recently introduced financial advisor who had already left Duggie Ferguson (John Bowe) to die after he fell down a set of ladders during an argument, and murdered his ex-wife Patricia (Annabelle Apsion), before going on to kill neighbour Maxine Peacock (Tracy Shaw); and attempt to kill both his mother-in-law Audrey Roberts (Sue Nicholls) and her longtime friend, Emily Bishop (Eileen Derbyshire), for financial gain due to his mounting debts. After confessing his crimes to Gail in a double episode two-hander in February 2003, Hillman left the street for two weeks before returning with the intent of killing himself as well as Gail, her children Sarah and David (Jack P. Shepherd), and granddaughter Bethany, before driving them into a canal – though the Platt family survived whilst Richard drowned. This came just months after Sarah had survived serious injuries after being passenger in a stolen car which crashed. The storyline received wide press attention, and viewing figures peaked at 19.4 million, with Hillman dubbed a \"serial killer\" by the media.", "title": "History" }, { "paragraph_id": 27, "text": "Todd Grimshaw (Bruno Langley) became Corrie's first regular homosexual character. In 2003, another gay male character was introduced, Sean Tully (Antony Cotton). The bigamy of Peter Barlow (Chris Gascoyne) and his addiction to alcohol, later in the decade, Maya Sharma's (Sasha Behar) revenge on former lover Dev Alahan (Jimmi Harkishin), Charlie Stubbs's (Bill Ward) psychological abuse of Shelley Unwin (Sally Lindsay), and the deaths of Mike Baldwin (Johnny Briggs), Vera Duckworth (Liz Dawn) and Fred Elliott (John Savident). In 2007, Tracy Barlow (Kate Ford) murdered Charlie Stubbs and claiming it was self-defence; the audience during this storyline peaked at 13.3 million. At the 2007 British Soap Awards, it won Best Storyline, and Ford was voted Best Actress for her portrayal.", "title": "History" }, { "paragraph_id": 28, "text": "In July 2007, after 34 years in the role of Vera Duckworth, Liz Dawn left the show due to ill health. After conversation between Dawn and producers Kieran Roberts and Steve Frost, the decision was made to kill Vera off.", "title": "History" }, { "paragraph_id": 29, "text": "Tina O'Brien revealed in the British press on 4 April 2007 that she would be leaving Coronation Street later in the year. Sarah-Louise, who was involved in some of the decade's most controversial stories, left in December 2007 with her daughter, Bethany. In 2008, Michelle learning that Ryan (Ben Thompson) was not her biological son, having been accidentally swapped at birth with Alex Neeson (Dario Coates). Carla Connor (Alison King) turned to Liam for comfort and developed feelings for him. In spite of knowing about her feelings, Liam married Maria Sutherland (Samia Longchambon). Maria and Liam's baby son was stillborn in April, and during an estrangement from Maria upon the death of their baby, Liam had a one-night stand with Carla, a story which helped pave the way for his departure.", "title": "History" }, { "paragraph_id": 30, "text": "In August 2008, Jed Stone (Kenneth Cope) returned after 42 years. Liam Connor and his ex-sister-in-law Carla gave into their feelings for each other and began an affair. Carla's fiancée Tony Gordon (Gray O'Brien) discovered the affair and had Liam killed in a hit-and-run in October. Carla struggled to come to terms with Liam's death, but decided she still loved Tony and married him on 3 December, in an episode attracting 10.3 million viewers. In April 2009 it was revealed that Eileen Grimshaw's (Sue Cleaver) father, Colin (Edward de Souza) – the son of Elsie Tanner's (Pat Phoenix) cousin Arnley – had slept with Eileen's old classmate, Paula Carp (Sharon Duce) while she was still at school, and that Paula's daughter Julie (Katy Cavanagh) was in fact also Colin's daughter. Other stories in 2009 included Maria giving birth to Liam's son and her subsequent relationship with Liam's killer Tony, Steve McDonald's (Simon Gregson) marriage to Becky Granger (Katherine Kelly) and Kevin Webster's (Michael Le Vell) affair with Molly Dobbs (Vicky Binns). On Christmas Day 2009, Sally Webster (Sally Dynevor) told husband Kevin that she had breast cancer, just as he was about to leave her for lover Molly.", "title": "History" }, { "paragraph_id": 31, "text": "The show began broadcasting in high-definition in May 2010, and on 17 September that year, Coronation Street entered Guinness World Records as the world's longest-running television soap opera after the American soap opera As the World Turns concluded. William Roache was listed as the world's longest-running soap actor. Coronation Street's 50th anniversary week was celebrated with seven episodes, plus a special one-hour live episode, broadcast from 6–10 December. The episodes averaged 14 million viewers, a 52.1% share of the audience. The anniversary was also publicised with ITV specials and news broadcasts. In the storyline, Nick Tilsley and Leanne Battersby's bar — The Joinery — exploded during Peter Barlow's stag party. As a result, the viaduct was destroyed, sending a Metrolink tram careering onto the street, destroying D&S Alahan's Corner Shop and The Kabin. Two characters, Ashley Peacock (Steven Arnold) and Molly Dobbs (Vicky Binns), along with an unknown taxi driver, were killed as a result of the disaster. Rita Sullivan (Barbara Knox) survived, despite being trapped under the rubble of her destroyed shop. Fiz Stape (Jennie McAlpine) prematurely gave birth to a baby girl, Hope. The episode of EastEnders broadcast on the same day as Coronation Street's 50th anniversary episode included a tribute, with the character Dot Branning (June Brown, who briefly appeared in the show during the 1970s) saying that she never misses an episode of Coronation Street.", "title": "History" }, { "paragraph_id": 32, "text": "On 7 February 2020, with its 60th anniversary ten months away, Coronation Street aired its landmark 10,000th episode, the runtime of which was extended to 60 minutes. Producers stated that the episode would contain \"a nostalgic trip down memory lane\" and \"a nod to its own past\". A month later, ITV announced that production on the soap would have to be suspended, as the United Kingdom was put into a national lockdown due to the COVID-19 pandemic (see impact of the COVID-19 pandemic on television).", "title": "History" }, { "paragraph_id": 33, "text": "After an 11-week intermission for all cast and crew members, filming resumed in June 2020. The episodes would feature social distancing to adhere to the guidelines set by the British government, and it was confirmed that all actors over 70, as well as those with underlying health conditions, would not be allowed to be on set until it was safe to do so. This included Coronation Street veterans William Roache (Ken Barlow) at 88, Barbara Knox (Rita Tanner) at 87, Malcolm Hebden (Norris Cole) at 80 and Sue Nicholls (Audrey Roberts) at 76. It was deemed safe for Maureen Lipman (Evelyn Plummer) and David Neilson (Roy Cropper) to continue. By December all cast members had returned to set and on Wednesday 9 December 2020, the soap celebrated its 60th anniversary, with original plans for the episode forced to change due to COVID-19 guidelines. The anniversary week saw the conclusion of a long-running coercive control storyline that began in May 2019, with Geoff Metcalfe (Ian Bartholomew) abusing Yasmeen Nazir (Shelley King). The showdown, which resulted in the death of Geoff allowed social distancing rules to be relaxed on the condition that the crew members involved formed a social bubble prior to the filming. In late 2021 series producer Iain MacLeod announced that the original plans for the 60th Anniversary would now take place in a special week of episodes in October 2021.", "title": "History" }, { "paragraph_id": 34, "text": "On 12 October 2021, it was announced that Coronation Street would partake in a special crossover event involving 7 British soaps to promote the topic of climate change ahead of the 2021 United Nations Climate Change Conference. During the week, beginning from 1 November, social media clips featuring Liam Cavanagh (Jonny McPherson) and Amelia Spencer (Daisy Campbell) from Emmerdale, as well as Daniel Granger (Matthew Chambers) from Doctors were featured on the programme, while events from Holby City were also referenced. A similar clip featuring Maria Connor (Samia Longchambon) was also featured on EastEnders. On 24 January 2022, ITV announced that as part of an overhaul of their evening programming, Coronation Street will permanently air as three 60-minute episodes per week from March 2022 onwards.", "title": "History" }, { "paragraph_id": 35, "text": "2023 saw more hard-hitting storylines such as: Daisy Midgeley's stalker which culminated into an acid attack, Amy Barlow's rape at the hands of Aaron Sandford and Paul Foreman's diagnosis with Motor Neurone Disease. New cast members introduced into the soap included Cait Fitton and Claire Sweeney.", "title": "History" }, { "paragraph_id": 36, "text": "Since 1960, Coronation Street has featured many characters whose popularity with viewers and critics has differed greatly. The original cast was created by Tony Warren, with the characters of Ena Sharples (Violet Carson), Elsie Tanner (Pat Phoenix) and Annie Walker (Doris Speed) as central figures. These three women remained with the show for at least 20 years, and became archetypes of British soap opera, often being emulated by other serials. Ena was the street's busybody, battle-axe and self-proclaimed moral voice. Elsie was the tart with a heart, who was constantly hurt by men in the search for true love. Annie Walker, landlady of the Rovers Return Inn, had delusions of grandeur and saw herself as better than the other residents.", "title": "Characters" }, { "paragraph_id": 37, "text": "Coronation Street became known for the portrayal of strong female characters, including original cast characters like Ena, Annie and Elsie, and later Hilda Ogden (Jean Alexander), who first appeared in 1964; all four became household names during the 1960s. Warren's programme was largely matriarchal, which some commentators put down to the female-dominant environment in which he grew up. Consequently, the show has a long tradition of psychologically abused husbands, most famously Stan Ogden (Bernard Youens) and Jack Duckworth (Bill Tarmey), husbands of Hilda and Vera Duckworth (Liz Dawn), respectively.", "title": "Characters" }, { "paragraph_id": 38, "text": "Coronation Street's longest-serving character, Ken Barlow (William Roache) entered the storyline as a young radical, reflecting the youth of 1960s Britain, where figures like the Beatles, the Rolling Stones and the model Twiggy were to reshape the concept of youthful rebellion. Though the rest of the original Barlow family were killed off before the end of the 1970s, Ken, who for 27 years was the only character from the first episode remaining, has remained the constant link throughout the entire series. In 2011, Dennis Tanner (Philip Lowrie), another character from the first episode, returned to Coronation Street after a 43-year absence. Since 1984, Ken Barlow has been the show's only remaining original character. Emily Bishop (Eileen Derbyshire) had appeared in the series since January 1961, when the show was just weeks old, and was the show's longest-serving female character before she departed in January 2016 after 55 years. Rita Tanner (Barbara Knox) appeared on the show for one episode in December 1964, before returning as a full-time cast member in January 1972. She is currently the second longest-serving original cast member on the show. Roache and Knox are also the two oldest-working cast members on the soap at 91 and 90 years-old respectively.", "title": "Characters" }, { "paragraph_id": 39, "text": "Stan and Hilda Ogden were introduced in 1964, with Hilda becoming one of the most famous British soap opera characters of all time. In a 1982 poll, she was voted fourth-most recognisable woman in Britain, after Queen Elizabeth The Queen Mother, Queen Elizabeth II and Diana, Princess of Wales. Hilda's best-known attributes were her pinny, hair curlers, and the \"muriel\" in her living room with three \"flying\" duck ornaments. Hilda Ogden's departure on Christmas Day 1987, remains the highest-rated episode of Coronation Street ever, with nearly 27,000,000 viewers. Stan Ogden had been killed off in 1984 following the death of actor Bernard Youens after a long illness which had restricted his appearances towards the end.", "title": "Characters" }, { "paragraph_id": 40, "text": "Bet Lynch (Julie Goodyear) first appeared in 1966, before becoming a regular in 1970, and went on to become one of the most famous Corrie characters. Bet stood as the central character of the show from 1985 until departing in 1995, often being dubbed as \"Queen of the Street\" by the media, and indeed herself. The character briefly returned in June 2002 and November 2003.", "title": "Characters" }, { "paragraph_id": 41, "text": "Coronation Street and its characters often rely heavily on archetypes, with the characterisation of some of its current and recent cast based loosely on former characters. Phyllis Pearce (Jill Summers), Blanche Hunt (Maggie Jones) and Sylvia Goodwin (Stephanie Cole) embodied the role of the acid-tongued busybody originally held by Ena, Sally Webster (Sally Dynevor) has grown snobbish, like Annie, and a number of the programme's female characters, such as Carla Connor (Alison King), mirror the vulnerability of Elsie and Bet. Other recurring archetypes include the war veteran such as Albert Tatlock (Jack Howarth), Percy Sugden (Bill Waddington) and Gary Windass (Mikey North), the bumbling retail manager like Leonard Swindley (Arthur Lowe), Reg Holdsworth (Ken Morley), Norris Cole (Malcolm Hebden), quick-tempered, tough tradesmen like Len Fairclough (Peter Adamson), Jim McDonald (Charles Lawson), Tommy Harris (Thomas Craig) and Owen Armstrong (Ian Puleston-Davies), and the perennial losers such as Stan and Hilda, Jack and Vera, Les Battersby (Bruce Jones), Beth Tinker (Lisa George) and Kirk Sutherland (Andrew Whyment).", "title": "Characters" }, { "paragraph_id": 42, "text": "Villains are also common character types, such as Tracy Barlow (Kate Ford), Alan Bradley (Mark Eden), Jenny Bradley (Sally Ann Matthews), Rob Donovan (Marc Baylis), Frank Foster (Andrew Lancel), Tony Gordon (Gray O'Brien), Caz Hammond (Rhea Bailey), Richard Hillman (Brian Capron), Greg Kelly (Stephen Billington), Will Chatterton (Leon Ockenden), Nathan Curtis (Christopher Harper), Callum Logan (Sean Ward), Karl Munro (John Michie), Pat Phelan (Connor McIntyre), David Platt (Jack P. Shepherd), Maya Sharma (Sasha Behar), Kirsty Soames (Natalie Gumede), John Stape (Graeme Hawley), Geoff Metcalfe (Ian Bartholomew) and Gary Windass (Mikey North). The show's former archivist and scriptwriter Daran Little disagreed with the characterisation of the show as a collection of stereotypes. \"Rather, remember that Elsie, Ena and others were the first of their kind ever seen on British television. If later characters are stereotypes, it's because they are from the same original mould. It is the hundreds of programmes that have followed which have copied Coronation Street.\"", "title": "Characters" }, { "paragraph_id": 43, "text": "Many topical issues have been tackled on Coronation Street, such as rape, including male and marital, historic sexual abuse, underage pregnancy, transgender issues, the right to die, racism, coercive control, cancer, homosexuality, domestic abuse, child grooming, and suicide, among others.", "title": "Storylines" }, { "paragraph_id": 44, "text": "Key storylines include: Mike and Deirdre's affair (1983), the death of Brian Tilsley (1989), Alan Bradley's abuse of Rita (1989), Kevin and Natalie's affair (1997), Deirdre is wrongfully jailed for fraud (1998), Sarah Platt's underage pregnancy (2000), Toyah's rape (2001), Alma's cancer (2001), Richard Hillman's serial killer storyline (2002–2003), Peter Barlow's bigamy (2003), Kevin and Molly's affair (2009), Kirsty's abuse of Tyrone (2012), Hayley's cancer (2013), Faye's underage pregnancy (2015), Bethany's grooming (2017), David's rape (2018), Aidan's suicide (2018), Sinead is diagnosed with cervical cancer (2019), Yasmeen's abuse (2020), Daisy's stalking hell (2023) and Paul's MND (2023).", "title": "Storylines" }, { "paragraph_id": 45, "text": "Between 9 December 1960 and 3 March 1961, Coronation Street was broadcast twice weekly, on Wednesday and Friday. During this period, the Friday episode was broadcast live, with the Wednesday episode being pre-recorded 15 minutes later. When the programme went fully networked on 6 March 1961, broadcast days changed to Monday and Wednesday. The last regular episode to be shown live was broadcast on 3 February 1961.", "title": "Production" }, { "paragraph_id": 46, "text": "The series was transmitted in black and white for the majority of the 1960s. Preparations were made to film episode 923, to be transmitted Wednesday 29 October 1969, in colour. This installment featured the street's residents on a coach trip to the Lake District. In the end, suitable colour film stock for the cameras could not be found and the footage was shot in black and white. The following episode, transmitted Monday 3 November, was videotaped in colour but featured black and white film inserts and title sequence. Like BBC1, the ITV network was officially broadcast in black and white at this point (though programmes were actually broadcast in colour as early as July that year for colour transmission testing and adjustment) so the episode was seen by most in black and white.", "title": "Production" }, { "paragraph_id": 47, "text": "The ITV network, like BBC1, began full colour transmissions on 15 November 1969. Daran Little, for many years the official programme archivist, claims that the first episode to be transmitted in colour was episode 930 shown on 24 November 1969. In October 1970, a technicians' dispute turned into the Colour Strike when sound staff were denied a pay rise given to camera staff the year before for working with colour recording equipment. The terms of the work-to-rule were that staff refused to work with the new equipment (though the old black and white equipment had been disposed of by then) and therefore programmes were recorded and transmitted in black and white, including Coronation Street. The dispute was resolved in early 1971 and the last black and white episode was broadcast on 10 February 1971, although the episodes transmitted on 22 and 24 February 1971 had contained black and white location inserts.", "title": "Production" }, { "paragraph_id": 48, "text": "From 22 March 2010, Coronation Street was produced in 1080/50i for transmission on HDTV platforms on ITV HD. The first transmission in this format was episode 7351 on 31 May 2010 with a new set of titles and re-recorded theme tune. On 26 May 2010 ITV previewed the new HD titles on the Coronation Street website. Due to copyright reasons only viewers residing in the UK could see them on the ITV site.", "title": "Production" }, { "paragraph_id": 49, "text": "Coronation Street's creator, Tony Warren, wrote the first 13 episodes of the programme in 1960, and continued to write for the programme intermittently until 1976. He later became a novelist, but retained links with Coronation Street. Warren died in 2016.", "title": "Production" }, { "paragraph_id": 50, "text": "Harry Kershaw was the script editor for Coronation Street when the programme began in 1960, working alongside Tony Warren. Kershaw was also a script writer for the programme and the show's producer between 1962 and 1971. He remains the only person, along with John Finch, to have held the three posts of script editor, writer and producer. Adele Rose was Coronation Street's first female writer and the show's longest-serving writer, completing 455 scripts between 1961 and 1998. She also created Byker Grove. Rose also won a BAFTA award in 1993 for her work on the show.", "title": "Production" }, { "paragraph_id": 51, "text": "Bill Podmore was the show's longest serving producer. By the time he stepped down in 1988 he had completed 13 years at the production helm. Nicknamed the \"godfather\" by the tabloid press, he was renowned for his tough, uncompromising style and was feared by both crew and cast alike. He is known for sacking Peter Adamson, the show's Len Fairclough, in 1983. Iain MacLeod is the current series producer.", "title": "Production" }, { "paragraph_id": 52, "text": "Michael Apted, known for the Up! series of documentaries, was a director on the programme in the early 1960s. This period of his career marked the first of his many collaborations with writer Jack Rosenthal. Rosenthal, noted for such television plays as Bar Mitzvah Boy, began his career on the show, writing over 150 episodes between 1961 and 1969. Paul Abbott was a story editor on the programme in the 1980s and began writing episodes in 1989, but left in 1993 to produce Cracker, for which he later wrote, before creating his own dramas such as Touching Evil and Shameless. Russell T Davies was briefly a storyliner on the programme in the mid-1990s, also writing the script for the direct-to-video special \"Viva Las Vegas!\" He, too, has become a noted writer of his own high-profile television drama programmes, including Queer as Folk and the 2005 revival of Doctor Who. Jimmy McGovern also wrote some episodes.", "title": "Production" }, { "paragraph_id": 53, "text": "The show's theme music, a cornet piece, accompanied by a brass band plus clarinet and double bass, reminiscent of northern band music, was written by Eric Spear. The original theme tune was called \"Lancashire Blues\" and Spear was paid a £6 commission in 1960 to write it.", "title": "Production" }, { "paragraph_id": 54, "text": "The identity of the trumpeter was not public knowledge until 1994, when jazz musician and journalist Ron Simmonds revealed that it was the Surrey musician Ronnie Hunt. He added, \"an attempt was made in later years to re-record that solo, using Stan Roderick, but it sounded too good, and they reverted to the old one.\" In 2004, the Manchester Evening News published a contradictory story that a young musician from Wilmslow called David Browning had played the original version. However, after investigating further, his story was found to be false, Browning not knowing that the original trumpet player Ronnie Hunt was still alive, proving that he was the true and rightful player that performed the solo. With his union pay stubs and contract, Browning was proven false.", "title": "Production" }, { "paragraph_id": 55, "text": "A new, completely re-recorded version of the theme tune replaced the original when the series started broadcasting in HD on 31 May 2010. It accompanied a new montage-style credits sequence featuring images of Manchester and Weatherfield. A reggae version of the theme tune was recorded by The I-Royals and released by Media Marvels and WEA in 1983.", "title": "Production" }, { "paragraph_id": 56, "text": "Episodes in the 1960s, 1970s and 1980s, regularly attracted figures of between 18 and 21 million viewers, and during the 1990s and early 2000s, 14 to 16 million per episode would be typical. Like most terrestrial television in the UK, a decline in viewership has taken place and the show posts an average audience of just under 9 million per episode as of 2013, remaining one of the highest rated programmes in the UK. EastEnders and Coronation Street have often competed for the highest rated show.", "title": "Production" }, { "paragraph_id": 57, "text": "The episode that aired on 2 January 1985, in which Bet Lynch (Julie Goodyear) finds out she has got the job as manager of the Rovers Return, is the highest-rated single episode in the show's history, attracting 21.40 million viewers. The 25 December 1987 episode, where Hilda Ogden (Jean Alexander) leaves the street to start a new life as a housekeeper for long-term employer Dr Lowther, attracted a combined audience of 26.65 million for its original airing and omnibus repeat on 27 December 1987. This is the second-highest combined rating in the show's history. The show attracted its highest-ever combined rating of 26.93 million for the episode that aired on 15 (and 19) March 1989, where Rita Fairclough (Barbara Knox) is in hospital and Alan Bradley (Mark Eden) is hiding from the police after trying to kill Rita in the previous episode.", "title": "Production" }, { "paragraph_id": 58, "text": "The regular exterior buildings shown in Coronation Street include a row of terrace houses, several townhouses, and communal areas including a newsagents (The Kabin), a café (Roy's Rolls), a general grocery shop (D&S Alahan's), a factory (Underworld) and Rovers Return Inn public house. The Rovers Return Inn is the main meeting place for the show's characters.", "title": "Production" }, { "paragraph_id": 59, "text": "Between 1960 and 1968, street scenes were transmitted/taped before a set constructed in a studio, with the house fronts reduced in scale to 3/4 and constructed from wood. In 1968 Granada built an outside set not all that different from the interior version previously used, with the wooden façades from the studio simply being erected on the new site. When the show began broadcasting in colour, these were replaced with brick façades, and back yards were added in the 1970s.", "title": "Production" }, { "paragraph_id": 60, "text": "In 1982, a permanent full-street set was built in the Granada backlot, an area between Quay Street and Liverpool Road in Manchester. The set was constructed from reclaimed Salford brick. The set was updated in 1989 with the construction of a new factory, two shop units and three modern town houses on the south side of the street.", "title": "Production" }, { "paragraph_id": 61, "text": "Between 1989 and 1999, the Granada Studios Tour allowed members of the public to visit the set. The exterior set was extended and updated in 1999. This update added to the Rosamund Street and Victoria Street façades, and added a viaduct on Rosamund Street. Most interior scenes are shot in the adjoining purpose-built studio.", "title": "Production" }, { "paragraph_id": 62, "text": "In 2008, Victoria Court, an apartment building full of luxury flats, was started on Victoria Street.", "title": "Production" }, { "paragraph_id": 63, "text": "In 2014, production moved to a new site at Trafford Wharf, a former dock area about two miles to the east, part of the MediaCityUK complex. The Trafford Wharf backlot is built upon a former truck stop site next to the Imperial War Museum North. It took two years from start to finish to recreate the iconic Street. The houses were built to almost full scale after previously being three-quarter size. On 5 April 2014, the staff began to allow booked public visits to the old Quay Street set. An advert, with a voiceover from Victoria Wood, appeared on TV to advertise the tour. The tour was discontinued in December 2015.", "title": "Production" }, { "paragraph_id": 64, "text": "On 12 March 2018, the extension of the Victoria Street set was officially unveiled. The new set featured a garden, featuring a memorial bench paying tribute to the 22 victims of the Manchester Arena bombing, including Coronation Street \"super fan\" Martyn Hett. The precinct includes a Greater Manchester Police station called Weatherfield Police station. As part of a product placement deal between three companies and ITV Studios, new additions include a tram stop station which is named Weatherfield North with Transport for Greater Manchester Metrolink branding, while shop front facades of Costa Coffee and the Weatherfield branded Co-op Food store interior scenes have been screened. Exterior scenes at the new set first aired on 20 April 2018.", "title": "Production" }, { "paragraph_id": 65, "text": "On 20 April 2018, ITV announced that they had been granted official approval of planning permission to allow booked public visits to the MediaCityUK Trafford Wharf set. Tours commenced on weekends from 26 May 2018 onwards. The set was further expanded in March 2022, with the addition of the Weatherfield Precinct, which took six months to build, and was inspired by Salford. The new section of the set included a two-storey construction featuring maisonettes, a staircase and balcony leading to the properties, a piazza and an array of shops and units.", "title": "Production" }, { "paragraph_id": 66, "text": "For 60 years, Coronation Street has remained at the centre of ITV's prime time schedule. The programme is currently shown in the UK in three hour-long episodes, over three evenings a week on ITV in the 8 pm time slot - Mondays, Wednesdays and Fridays. Additional episodes have been broadcast at other times, such as between 22 and 26 November 2004, when eight episodes were shown. Occasional late night episodes of Coronation Street begin at 10 pm, due to the watershed.", "title": "Broadcast" }, { "paragraph_id": 67, "text": "From Friday 9 December 1960 until Friday 3 March 1961, the programme was shown in two episodes broadcast on Wednesday and Friday at 7 pm. Schedules were changed, and from Monday 6 March 1961 until Wednesday 11 October 1989, the programme was shown in two episodes broadcast Monday and Wednesday at 7:30 pm. A third weekly episode was introduced on Friday 20 October 1989, broadcast at 7:30 pm. From 1996, an extra episode was broadcast at 7:30 pm on Sunday nights.", "title": "Broadcast" }, { "paragraph_id": 68, "text": "Aside from Granada, the programme originally appeared on the following stations of the ITV network: Anglia Television, Associated-Rediffusion, Television Wales and the West, Scottish Television, Southern Television and Ulster Television. From episode 14 on Wednesday 25 January 1961, Tyne Tees Television broadcast the programme. That left ATV in the Midlands as the only ITV station not carrying the show. When they decided to broadcast the programme, national transmission was changed from Wednesday and Friday at 7 pm to Monday and Wednesday at 7:30 pm and the programme became fully networked under this new arrangement from episode 25 on Monday 6 March 1961.", "title": "Broadcast" }, { "paragraph_id": 69, "text": "As the ITV network grew over the next few years, the programme was transmitted by these new stations on these dates onward: Westward Television from episode 40 on 1 May 1961, Border Television from episode 76 on 4 September 1961, Grampian Television from episode 84 on 2 October 1961, Channel Television from episode 180 on 3 September 1962 and Teledu Cymru (north and west Wales) from episode 184 on 17 September 1962. At this point, the ITV network became complete and the programme was broadcast almost continuously across the country at 7:30 pm on Monday and Wednesday for the next twenty-eight years.", "title": "Broadcast" }, { "paragraph_id": 70, "text": "From episode 2981 on Friday 20 October 1989 at 7:30 pm, a third weekly episode was introduced and this increased to four episodes a week from episode 4096 on Sunday 24 November 1996, again at 7:30 pm. A second Monday episode was introduced in 2002 and was broadcast at 8:30 pm to usher in the return of Bet Lynch. The Monday 8:30 pm episode was used intermittently during the popular Richard Hillman storyline and became a regular feature from episode 5568 on Monday 25 August 2003.", "title": "Broadcast" }, { "paragraph_id": 71, "text": "In January 2008, ITV axed the Sunday episode, and instead aired a second episode on Fridays, at 8:30 pm, with the final Sunday episode airing on 6 January 2008. From 23 July 2009 to September 2012 the Wednesday show was replaced with an episode at 8:30 pm on Thursdays. A sixth weekly episode was added on Wednesdays at 8:30 pm from 20 September 2017.", "title": "Broadcast" }, { "paragraph_id": 72, "text": "In March 2020, it was revealed that episodes that were currently filming for future broadcast (as episodes are filmed a few weeks in advance) during the COVID-19 pandemic would be shown differently. Instead of six episodes a week, only three episodes would be broadcast, airing as normal on a Monday, Wednesday and Friday at the normal timeslot of 7:30 pm. The actions provided would be made effective starting from 30 March. Simultaneously, the announcement also mentioned that the elderly cast of the show would be \"written off\" due to health advice issued by Public Health England and the NHS. On 22 March, ITV released a statement confirming that filming of both Coronation Street and Emmerdale was suspended.", "title": "Broadcast" }, { "paragraph_id": 73, "text": "In June 2020, ITV announced that filming would resume on 9 June. However, due to the new health and safety measures, cast members over the age of 70 or with underlying health conditions did not come back on set, until the production could determine it is safe for them to return.", "title": "Broadcast" }, { "paragraph_id": 74, "text": "In July 2020, ITV announced that Coronation Street would return to the normal output of six episodes a week in September that year.", "title": "Broadcast" }, { "paragraph_id": 75, "text": "In October 2020, Maureen Lipman and David Neilson made their first appearances since July that year, as all cast members over the age of 70 had temporarily left the series earlier in the year. William Roache, Barbara Knox and Sue Nicholls returned in December.", "title": "Broadcast" }, { "paragraph_id": 76, "text": "On 22 January 2021, ITV announced that filming would be suspended from 25 January in order to rewrite \"stories and scripts as a consequence of the coronavirus pandemic\" and to \"review all health and safety requirements\". ITV also confirmed that this decision would not affect their ability to deliver six episodes a week.", "title": "Broadcast" }, { "paragraph_id": 77, "text": "In January 2022, it was announced that after 60 years in the 7.30 pm slot, Coronation Street's transmission time would move to 8 pm due to the ITV Evening News having a longer duration, pushing Emmerdale into the 7.30 pm slot on weeknights. The double-bill episodes on Mondays, Wednesdays and Fridays have merged into hour-long slots on these days. The new scheduling went live on Monday 7 March 2022.", "title": "Broadcast" }, { "paragraph_id": 78, "text": "Repeat episodes, omnibus broadcasts and specials have been shown on various ITV channels. After several years on ITV2, in January 2008 the omnibus returned to the main ITV channel, where it was aired on Saturday mornings or afternoons, depending on the schedule and times.", "title": "Broadcast" }, { "paragraph_id": 79, "text": "In May 2008, it moved to Sunday mornings, until August 2008, when it returned to Saturdays. In January 2009, it moved back to Sunday mornings, usually broadcasting at around 9.25am until December 2010. In January 2011, the omnibus moved to Saturday mornings on ITV at 9.25am. During the Rugby World Cup, which took place in New Zealand, matches had to be broadcast on a Saturday morning, so the omnibus moved to Saturday lunchtimes/afternoons during September and October 2011. On 22 October 2011, the omnibus moved back to Saturday mornings at 9.25am on ITV. In January 2012, the omnibus moved to ITV2, and then moved to ITV3 in January 2020. In January 2022, the omnibus moved back to ITV2.", "title": "Broadcast" }, { "paragraph_id": 80, "text": "Older episodes were broadcast by satellite and cable channel Granada Plus from its launch in 1996. The first episodes shown were from episode 1588 (originally transmitted on Monday 5 April 1976) onwards. Originally listed and promoted as Classic Coronation Street, the \"classic\" was dropped in early 2002, at which stage the episodes were from late 1989. By the time of the channel's closure in 2004, the repeats had reached February 1994.", "title": "Broadcast" }, { "paragraph_id": 81, "text": "In addition to this, \"specials\" were broadcast on Saturday afternoons in the early years of the channel, with several episodes based on a particular theme or character(s) shown. The last episode shown in these specials was from 1991. In addition, on 27 and 28 December 2003, several Christmas Day editions of the show were broadcast.", "title": "Broadcast" }, { "paragraph_id": 82, "text": "ITV3 began airing afternoon timeslot sequential reruns of Classic Coronation Street from 2 October 2017. Two classic episodes were retransmitted from Mondays to Fridays at 2:40 pm until 3:45 pm, starting from episode 2587 (originally transmitted on Wednesday 15 January 1986) onwards.", "title": "Broadcast" }, { "paragraph_id": 83, "text": "To mark the 60th anniversary of Coronation Street, between 7 and 11 December 2020 at 10:00 pm–11:05 pm, ITV3 aired special episodes of the soap including Episode 1, the tenth anniversary episode from December 1970, two episodes from the twentieth anniversary in December 1980, two episodes from the thirtieth anniversary in December 1990, the 2000 live episode from the fortieth anniversary in December 2000, and the fiftieth anniversary episode which aired after a repeat of The Road to Coronation Street.", "title": "Broadcast" }, { "paragraph_id": 84, "text": "On Easter Monday 2022, to commemorate the upcoming 90th birthday of William Roache, eight special Coronation Street Ken Barlow episodes were aired on 18 April 2022, at 10:25 am–2:35 pm. The episodes shown were Episode 1 from December 1960, Ken and Deirdre Tie the Knot from July 1981, Ken's Affair from December 1989, Deirdre's Fling from January 2003, Steve and Karen's Wedding Shocker from February 2004, Ken and Deirdre's Second Wedding from April 2005, Ken and Deirdre's Holiday from August 2014, and Deirdre's Death from July 2015.", "title": "Broadcast" }, { "paragraph_id": 85, "text": "Coronation Street is shown in various countries worldwide. YouTube has the first episode and many others available as reruns.", "title": "Broadcast" }, { "paragraph_id": 86, "text": "The programme was first aired in Australia in 1963 on TCN-9 Sydney, GTV-9 Melbourne and NWS-9 Adelaide, and by 1966 Coronation Street was more popular in Australia than in the UK. The show eventually left free-to-air television in Australia. It briefly returned to the Nine Network in a daytime slot during 1994–1995. In 2005, STW-9 Perth began to show episodes before the 6 pm news to improve the lead in to Nine News Perth, but this did not work and the show was cancelled a few months later. In 1996, pay-TV began and Arena began screening the series in one-hour instalments on Saturdays and Sundays at 6:30 pm EST. The series was later moved to pay-TV channel UKTV (now BBC UKTV), where it is still shown. Coronation Street is shown Mon-Thu at 7:20 pm EST and a double episode on Fridays, with episodes on the channel being one week behind UK broadcast.", "title": "Broadcast" }, { "paragraph_id": 87, "text": "In Canada, Coronation Street is broadcast on CBC Television. Until 2011, episodes were shown in Canada approximately 10 months after they aired in Britain; however, beginning in the fall of 2011, the CBC began showing two episodes every weekday, in order to catch up with the ITV showings, at 6:30 pm and 7 pm local time Monday-Friday, with an omnibus on Sundays at 7.30am. By May 2014, the CBC was only two weeks behind Britain, so the show was reduced to a single showing weeknights at 6:30 pm local time. The show debuted on Toronto's CBLT in July 1966. The 2002 edition of the Guinness Book of Records recognises the 1,144 episodes sold to the now-defunct CBC-owned Saskatoon, Saskatchewan, TV station CBKST by Granada TV on 31 May 1971 to be the largest number of TV shows ever purchased in one transaction. The show traditionally aired on weekday afternoons in Canada, with a Sunday morning omnibus. In 2004, CBC moved the weekday airings from their daytime slot to prime time. In light of austerity measures imposed on the CBC in 2012, which includes further cutbacks on non-Canadian programming, one of the foreign shows to remain on the CBC schedule is Coronation Street, according to the CBC's director of content planning Christine Wilson, who commented: \"Unofficially I can tell you Coronation Street is coming back. If it didn't come back, something would happen on Parliament Hill.\" Kirstine Stewart, the head of the CBC's English-language division, once remarked: \"Coronation Street fans are the most loyal, except maybe for curling viewers, of all CBC viewers.\" As of mid 2022, Canada is about three weeks behind the UK and airs six episodes per week.", "title": "Broadcast" }, { "paragraph_id": 88, "text": "In the Republic of Ireland, Coronation Street is currently shown on Virgin Media One. The show was first aired in 1978, when RTÉ2 began showing episodes from 1976, although Ireland caught up with the current UK episodes in 1983. In 1992 it moved to RTÉ One, but in 2001 Granada TV bought 45 percent of TV3, and so TV3 broadcast the series from 2001 to 2014. In 2006, ITV sold its share of the channel but TV3 continued to buy the soap until the end of 2014 when it moved to UTV Ireland. Coronation Street has broadcast on each of the main Irish networks, except for the Irish language network TG4. In December 2016, Coronation Street returned to TV3 (now Virgin Media One). The show is consistently the channel's most viewed programme every week.", "title": "Broadcast" }, { "paragraph_id": 89, "text": "Two Dutch stations have broadcast Coronation Street: VARA showed 428 episodes between 1967 and 1975, and SBS6 ran the show for a period starting in 2010. From 2006 the series was also broadcast by Vitaya, a small Flemish Belgian channel.", "title": "Broadcast" }, { "paragraph_id": 90, "text": "In New Zealand, Coronation Street has been shown locally since 1964, first on NZBC television until 1975, and then on TV One, which broadcasts it in a 4-episode/2-hour block on Fridays from 7:30 pm. In September 2014, TV One added a 2-episode/1-hour block on Saturday from 8:30 pm. Because TV One did not upgrade to showing the equivalent of five or six episodes per week, New Zealand continued to fall further and further behind with episodes, and was 23 months behind Britain as of March 2014. During the weekday nights of the week ending 11 April 2014 and previous weeks, Coronation Street was the least watched programme on TV One in the 7:30 pm slot by a considerable margin in comparison to other weeknights, The serial aired on Tuesdays and Thursdays at 7:30 pm until October 2011, when the show moved to a 5:30 pm half-hour slot every weekday. The move proved unpopular with fans, and the series was quickly moved into its present prime-time slot within weeks. Episodes 7883, 7884, 7885 and 7886 were screened on 16 May 2014. These were originally aired in the UK between 4 and 11 June 2012. On 10 May 2018 it was announced that the current 2016 episodes would be moved to 1 p.m. Monday-Friday titled 'Catch-up Episodes' and for primetime Wednesday-Friday express episodes would be airing in New Zealand a week behind the United Kingdom titled '2018 Episodes' these changes would be taking place from 11 June 2018.", "title": "Broadcast" }, { "paragraph_id": 91, "text": "In South Africa, Coronation Street episodes were broadcast three days after the UK air date on ITV Choice until the channel ceased broadcasting in June 2020, episodes temporarily went off the air until they moved to M-Net City, starting in October 2020.", "title": "Broadcast" }, { "paragraph_id": 92, "text": "In the United States, Coronation Street is available by broadcast or cable only in northern markets where CBC coverage from Canada overlaps the border or is available on local cable systems. It was broadcast on CBC's US cable channel, Trio until the CBC sold its stake in the channel to Universal, before it was shut down in 2006. Beginning in 2009, episodes were available in the United States through Amazon.com's on-demand service, a month behind their original UK airdates. The final series of shows available from Amazon appears to be from November 2012, as no new episodes have been uploaded. On 15 January 2013, online distributor Hulu began airing episodes of the show, posting a new episode daily, two weeks after their original airdates. For a time, Hulu's website stated: \"New episodes of Coronation Street will be unavailable as of April 7th, 2016\", with the same being said for British soap Hollyoaks, but Hulu is once again showing new episodes of Coronation Street as of April 2017, two weeks behind the UK airdate. The BBC/ITV service Britbox shows new episodes on the same day as the UK airing. Coronation Street was also shown on USA Network for an unknown period starting in 1982.", "title": "Broadcast" }, { "paragraph_id": 93, "text": "HM Forces and their families stationed overseas can watch Coronation Street on ITV, carried by the British Forces Broadcasting Service, which is also available to civilians in the Falkland Islands. It used to be shown on BFBS1.", "title": "Broadcast" }, { "paragraph_id": 94, "text": "Satellite channel ITV Choice showed the programme in Asia, Middle East, Cyprus, and Malta, before the channel ceased broadcasting in 2019.", "title": "Broadcast" }, { "paragraph_id": 95, "text": "The Street, a magazine dedicated to the show, was launched in 1989. Edited by Bill Hill, the magazine contained a summary of recent storylines, interviews, articles about classic episodes, and stories that occurred from before 1960. The format was initially A5 size, expanding to A4 from the seventh issue. The magazine folded after issue 23 in 1993 when the publisher's contract with Granada Studios Tour expired and Granada wanted to produce their own magazine.", "title": "Merchandise" }, { "paragraph_id": 96, "text": "On 25 June 2010, a video game of the show was released on Nintendo DS. The game was developed by Mindscape, and allowed players to complete tasks in the fictitious town of Weatherfield.", "title": "Merchandise" }, { "paragraph_id": 97, "text": "In 1995, to commemorate the programme's 35th anniversary, a CD titled The Coronation Street Album was released, featuring cover versions of modern songs and standards by contemporary cast members.", "title": "Merchandise" }, { "paragraph_id": 98, "text": "The album charted a Top 40 hit when \"The Coronation Street Single\" (a double a-side featuring a cover of Monty Python's \"Always Look on the Bright Side of Life\" by Bill Waddington – with various cast members on backing vocals – on one side and \"Something Stupid\" by Johnny Briggs & Amanda Barrie on the other) reached number 35 in the Official UK charts.", "title": "Merchandise" }, { "paragraph_id": 99, "text": "In 2010, an album featuring songs sung by cast members was released to celebrate 50 years of Coronation Street. The album is titled Rogues, Angels, Heroes & Fools, and was later developed into a musical.", "title": "Merchandise" }, { "paragraph_id": 100, "text": "Granada launched one spin-off in 1965, Pardon the Expression, following the story of clothing store manager Leonard Swindley (Arthur Lowe) after he left Weatherfield. Swindley's management experience was tested when he was appointed assistant manager at a fictional department store, Dobson and Hawks. Granada produced two series of the spin-off, which ended in 1966.", "title": "Spin-offs" }, { "paragraph_id": 101, "text": "In 1967, Arthur Lowe returned as Leonard Swindley in Turn Out the Lights, a short-lived sequel to Pardon the Expression. It ran for just one series of six episodes before it was cancelled.", "title": "Spin-offs" }, { "paragraph_id": 102, "text": "From 1985 to 1988 Granada TV produced a sitcom called The Brothers McGregor featuring a pair of half-brothers (one black, one white) who had appeared in a single episode of Coronation Street as old friends of Eddie Yeats and guests at his wedding. The original actors were unavailable so the characters were recast with Paul Barber and Philip Whitchurch. The show ran for 26 episodes over four series.", "title": "Spin-offs" }, { "paragraph_id": 103, "text": "In 1985, a sister series, Albion Market was launched. It ran for one year, with 100 episodes produced.", "title": "Spin-offs" }, { "paragraph_id": 104, "text": "In 2010, several actors from the show appeared on The Jeremy Kyle Show as their soap characters: David Platt (Jack P. Shepherd), Nick Tilsley (Ben Price), Tina McIntyre (Michelle Keegan) and Graeme Proctor (Craig Gazey). In the fictional, semi-improvised scenario, David accused Nick (his brother) and Tina (his ex-girlfriend) of sleeping together.", "title": "Spin-offs" }, { "paragraph_id": 105, "text": "Coronation Street and rival soap opera EastEnders had a crossover for Children in Need in November 2010 called \"East Street\". EastEnders stars that visited Weatherfield include Laurie Brett as Jane Beale, Charlie G. Hawkins as Darren Miller, Kylie Babbington as Jodie Gold, Nina Wadia as Zainab Masood and John Partridge as Christian Clarke.", "title": "Spin-offs" }, { "paragraph_id": 106, "text": "On 21 December 2012, Coronation Street produced a Text Santa special entitled A Christmas Corrie which featured Norris Cole in the style of Scrooge, being visited by the ghosts of dead characters. The ghosts were Mike Baldwin, Maxine Peacock, Derek Wilton and Vera Duckworth. Other special guests include Torvill and Dean, Lorraine Kelly and Sheila Reid. The episode concluded with Norris learning the error of his ways and dancing on the cobbles. The original plan for this feature was to have included Jack Duckworth, along with Vera, but actor Bill Tarmey died before filming commenced. In the end a recording of his voice was played.", "title": "Spin-offs" }, { "paragraph_id": 107, "text": "Coronation Street: Family Album was several documentaries about various families living on the street.", "title": "Spin-offs" }, { "paragraph_id": 108, "text": "\"Farewell ...\" was several documentaries featuring the best moments of a single character who had recently left the series—most notably, Farewell Mike (Baldwin), Farewell Vera (Duckworth), Farewell Blanche (Hunt), Farewell Jack (Duckworth), Farewell Janice (Battersby), Farewell Liz (McDonald), Farewell Becky (McDonald), and Farewell Tina (McIntyre). Most of these were broadcast on the same day as the character's final scenes in the series.", "title": "Spin-offs" }, { "paragraph_id": 109, "text": "Stars on the Street was aired around Christmas 2009. It featured actors from the soap talking about the famous guest stars who had appeared in the series including people who were in it before they were famous.", "title": "Spin-offs" }, { "paragraph_id": 110, "text": "In December 2010, ITV made a few special programmes to mark the 50th anniversary. Coronation Street Uncovered: Live, hosted by Stephen Mulhern was shown after the episode with the tram crash was aired on ITV2. On 7 and 9 December a countdown on the greatest Corrie moments, Coronation Street: 50 Years, 50 Moments, the viewers voted \"The Barlows at Alcoholics Anonymous\" as the greatest moment. On 10 December Paul O'Grady hosted a quiz show, Coronation Street: The Big 50 with three teams from the soap and a celebrity team answering questions about Coronation Street and other soaps. Also, Come Dine with Me and Celebrity Juice aired Coronation Street specials in the anniversary week.", "title": "Spin-offs" }, { "paragraph_id": 111, "text": "The German TV series Lindenstraße took Coronation Street as the model. Lindenstraße started in 1985 and broadcast its final episode on 29 March 2020, after airing for nearly 35 years.", "title": "Spin-offs" }, { "paragraph_id": 112, "text": "Over the years, Coronation Street has released several straight-to-video films. Unlike other soaps, which often used straight-to-video films to cover more contentious plot lines that may not be allowed by the broadcaster, Coronation Street has largely used these films to reset their characters in other locations.", "title": "Spin-offs" }, { "paragraph_id": 113, "text": "In 1995, Coronation Street: The Cruise also known as Coronation Street: The Feature Length Special was released on VHS to celebrate the 35th anniversary of the show, featuring Rita Sullivan, Mavis Wilton, Alec Gilroy, Curly Watts and Raquel Watts. ITV heavily promoted the programme as a direct-to-video exclusive, but broadcast a brief version of it on 24 March 1996. The Independent Television Commission investigated the broadcast, as viewers complained that ITV misled them.", "title": "Spin-offs" }, { "paragraph_id": 114, "text": "In 1997, following the controversial cruise spin-off, Coronation Street: Viva Las Vegas! was released on VHS, featuring Vera Duckworth, Jack Duckworth, Fiona Middleton and Maxine Peacock on a trip to Las Vegas, which included the temporary return of Ray Langton.", "title": "Spin-offs" }, { "paragraph_id": 115, "text": "In 1999, six special episodes of Coronation Street were produced, following the story of Steve McDonald and Vikram Desai in Brighton, which included the temporary returns of Bet Gilroy, Reg Holdsworth and Vicky McDonald. This video was titled Coronation Street: Open All Hours and released on VHS.", "title": "Spin-offs" }, { "paragraph_id": 116, "text": "In 2008, ITV announced filming was to get underway for a new special DVD episode, Coronation Street: Out of Africa, featuring Kirk Sutherland, Fiz Brown, Chesney Brown, which included the temporary return of Cilla Battersby-Brown. Sophie Webster, Becky Granger and Tina McIntyre also make brief appearances.", "title": "Spin-offs" }, { "paragraph_id": 117, "text": "In 2009, another DVD special, Coronation Street: Romanian Holiday, was released. The feature-length comedy drama followed Roy, Hayley and Becky as they travelled to Romania for the wedding of a face from their past. Eddie Windass also briefly appears.", "title": "Spin-offs" }, { "paragraph_id": 118, "text": "The BBC commissioned a one-off drama called The Road to Coronation Street, about how the series first came into being. Jessie Wallace plays Pat Phoenix (Elsie Tanner) with Lynda Baron as Violet Carson (Ena Sharples), Celia Imrie as Doris Speed (Annie Walker) and James Roache as his own father William Roache (Ken Barlow). It was broadcast on 16 September 2010 on BBC Four.", "title": "Spin-offs" }, { "paragraph_id": 119, "text": "On 1 November 2010, Coronation Street: A Knight's Tale was released. Reg Holdsworth and Curly Watts returned in the film. Mary tries to take Norris to an apparently haunted castle where she hoped to seduce him. Rosie gets a job there and she takes Jason with her. Brian Capron also guest starred as an assumed relative of Richard Hillman. He rises out of a lake with a comedic \"wink to the audience\" after Hillman drowned in 2003. Rita Sullivan also briefly appears.", "title": "Spin-offs" }, { "paragraph_id": 120, "text": "On 21 December 2008, a web-based miniseries ran on ITV.com; called Corrie Confidential; the first episode featured the characters Rosie and Sophie Webster in Underworld.", "title": "Spin-offs" }, { "paragraph_id": 121, "text": "ITV.com launched a small spin-off drama series called 'Gary's Army Diaries' which revolves around Gary Windass's experiences in Afghanistan and the loss of his best friend, Quinny. Due to their popularity, the three five-minute episodes were recut into a single 30-minute episode, which was broadcast on ITV2.", "title": "Spin-offs" }, { "paragraph_id": 122, "text": "William Roache and Anne Kirkbride starred as Ken and Deirdre in a series of ten three-minute internet 'webisodes'. The first episode of the series titled, Ken and Deirdre's Bedtime Stories was activated on Valentine's Day 2011.", "title": "Spin-offs" }, { "paragraph_id": 123, "text": "In 2011, an internet based spin-off starring Helen Flanagan as Rosie Webster followed her on her quest to be a supermodel called Just Rosie.", "title": "Spin-offs" }, { "paragraph_id": 124, "text": "On 3 February 2014, another web-based miniseries ran on ITV.com; called Streetcar Stories. It showed what Steve and Lloyd get up to during the late nights in their Streetcar cab office. The first episode shows Steve and Lloyd making a cup of tea with \"The Stripper\" playing in the background, referencing Morecambe and Wise's Breakfast Sketch. The second episode involves the pair having a biscuit dunking competition.", "title": "Spin-offs" }, { "paragraph_id": 125, "text": "During the 'Who Attacked Ken' storyline, a mini series of police files was run on the official Coronation Street YouTube channel. They outlined the suspects' details and possible motives.", "title": "Spin-offs" }, { "paragraph_id": 126, "text": "In August 2010, many Coronation Street characters were brought to the stage in Jonathan Harvey's comedy play Corrie!. The play was commissioned to celebrate the 50th Anniversary of the TV series and was presented at The Lowry in Salford, England by ITV Studios and Phil McIntyre Entertainments. Featuring a cast of six actors who alternate roles of favourite characters including Ena Sharples, Hilda Ogden, Hayley and Roy, Richard Hillman, Jack and Vera, Bet Lynch, Steve, Karen and Becky, the play weaves together some of the most memorable moments from the TV show. It toured UK theatres between February 2011 and July 2011 with guest star narrators including Roy Barraclough, Ken Morley and Gaynor Faye.", "title": "Spin-offs" }, { "paragraph_id": 127, "text": "The British rock band Queen produced a single \"I Want to Break Free\" in 1984 that reached number 3 in the UK Singles Chart. The song is memorable for its music video in which the band members dressed in women's clothing, which parodied characters in Coronation Street and is considered an homage to the show. The video depicts Freddie Mercury as a housewife, loosely based on Bet Lynch, who wants to \"break free\" from his life. Although Lynch was a blonde in the soap opera, Mercury thought he would look too silly as a blonde and chose a dark wig. Guitarist Brian May plays another, more relaxed housewife based on Hilda Ogden. In December 2022, the American singer Bob Dylan was offered a cameo on Coronation Street after revealing to The Wall Street Journal that he is a fan of the ITV soap.", "title": "In popular culture" }, { "paragraph_id": 128, "text": "Cadbury was the first sponsor of Coronation Street, beginning in July 1996. In the summer of 2006, Cadbury Trebor Bassetts had to recall over one million chocolate bars, due to suspected salmonella contamination, and Coronation Street stopped the sponsorship for several months. In 2006, Cadbury did not renew their contract, but agreed to sponsor the show until Coronation Street found a new sponsor.", "title": "Sponsorship" }, { "paragraph_id": 129, "text": "Harveys then sponsored Coronation Street from 30 September 2007 until December 2012. In the Coronation Street: Romanian Holiday film, Roy and Hayley Cropper are filmed in front of a Harveys store, and in Coronation Street: A Knights Tale, a Harveys truck can be seen driving past Mary Taylor's motorhome. Compare The Market took over as sponsor from 26 November 2012 until 30 November 2020. On 10 December 2020, it was announced that Argos would be the new sponsor of Coronation Street, starting on 1 January 2021.", "title": "Sponsorship" }, { "paragraph_id": 130, "text": "In November 2011, a Nationwide Building Society ATM in Dev Alahan's corner shop became the first use of paid-for product placement in a UK primetime show. In 2018, the shop fronts of Co-Op and Costa Coffee were added to the sets, along with characters using shopping bags with the respective logos on as props.", "title": "Sponsorship" }, { "paragraph_id": 131, "text": "Hyundai have been the sponsor since January 2015 in the Republic of Ireland, aired on Virgin Media One.", "title": "Sponsorship" } ]	Coronation Street is a British television soap opera created by Granada Television and shown on ITV since 9 December 1960. The programme centres on a cobbled, terraced street in the fictional Weatherfield, a town based on inner-city Salford, England. Originally broadcast twice weekly, the series began airing six times a week in 2017. The programme was conceived by scriptwriter Tony Warren. Warren's initial proposal was rejected by the station's founder Sidney Bernstein, but he was persuaded by producer Harry Elton to produce the programme for 13 pilot episodes. The show has since become a significant part of British culture. Coronation Street is made by Granada's successor, ITV Studios, at MediaCityUK and shown in all ITV regions, as well as internationally. In 2010, upon its 50th anniversary, the series was recognised by Guinness World Records as the world's longest-running television soap opera. Initially influenced by the conventions of kitchen-sink realism, Coronation Street is noted for its depiction of a down-to-earth, working-class community, combined with light-hearted humour and strong characters. The show currently averages around five million viewers per episode. The show premiered its 10,000th episode on 7 February 2020, and celebrated its 60th anniversary later that year.	2001-10-20T05:52:34Z	2023-12-31T20:21:12Z	[ "Template:Cite journal", "Template:Wikiquote", "Template:'", "Template:'s", "Template:Cite web", "Template:IMDb title", "Template:IPAc-en", "Template:Citation needed", "Template:Itv.com", "Template:Cite tweet", "Template:Stv.tv", "Template:Use British English", "Template:Cite video", "Template:Cite book", "Template:Use dmy dates", "Template:Main", "Template:As of", "Template:Nbsp", "Template:Coronation Street", "Template:Coronation Street characters", "Template:Soap operas in the United Kingdom", "Template:Spoken Wikipedia", "Template:Infobox television", "Template:Reflist", "Template:ISBN", "Template:Webarchive", "Template:Short description", "Template:Cite news" ]	https://en.wikipedia.org/wiki/Coronation_Street
6,852	Caligula	Gaius Caesar Augustus Germanicus (31 August 12 – 24 January 41), better known by his nickname Caligula (/kəˈlɪɡjʊlə/), was Roman emperor from AD 37 until his assassination in AD 41. He was the son of the Roman general Germanicus and Agrippina the Elder, Augustus' granddaughter. Caligula was born into the first ruling family of the Roman Empire, conventionally known as the Julio-Claudian dynasty. Although Gaius was named after Gaius Julius Caesar, he acquired the nickname "Caligula" ('little boot'), the diminutive form of caliga, a military boot, from his father's soldiers during their campaign in Germania. When Germanicus died at Antioch in 19, Agrippina returned with her six children to Rome, where she became entangled in a bitter feud with the emperor Tiberius (Germanicus' biological uncle and adoptive father). The conflict eventually led to the destruction of her family, with Caligula as the sole male survivor. In 26, Tiberius withdrew from public life to the island of Capri, and in 31, Caligula joined him there. Following the former's death in 37, Caligula succeeded him as emperor, at the age of 24. There are few surviving sources about Caligula and his four-year reign. He is described as a noble and moderate emperor during the first six months of his rule, but after this, the sources focus upon his cruelty, sadism, extravagance, and sexual perversion, presenting him as an insane tyrant who demanded and received worship as a living god. The reliability of these sources is questionable; most modern commentaries seek to explain Caligula's position, personality and historical context. Many of the lurid, outrageous allegations against him have received close scrutiny in modern histories and are dismissed as misunderstandings, exaggeration, propaganda or malicious fantasy. During his brief reign, Caligula worked to increase the unconstrained personal power of the emperor, as opposed to countervailing powers within the principate. He directed much of his attention to ambitious construction projects and luxurious dwellings for himself. He began the construction of two aqueducts in Rome: the Aqua Claudia and the Anio Novus. During his reign, the empire annexed the client kingdom of Mauretania as a province. In early 41, Caligula was assassinated as a result of a conspiracy by officers of the Praetorian Guard, senators, and courtiers. At least some of the conspirators might have planned this as an opportunity to restore the Roman Republic and aristocratic privileges; but if so, their plan was thwarted by the Praetorians, who seem to have spontaneously chosen Caligula's uncle Claudius as the next emperor. Caligula's death marked the official end of the Julii Caesares in the male line, though the Julio-Claudian dynasty continued to rule until the demise of Caligula's nephew, Nero. Caligula was born in Antium on 31 August AD 12, the third of six surviving children of Germanicus and his wife and second cousin, Agrippina the Elder. Germanicus was a grandson of Mark Antony, and Agrippina was the daughter of Marcus Vipsanius Agrippa and Julia the Elder, making her the granddaughter of Augustus. The future emperor Claudius was Caligula's paternal uncle. Caligula had two older brothers, Nero and Drusus, and three younger sisters, Agrippina the Younger, Julia Drusilla and Julia Livilla. At the age of two or three, he accompanied his father, Germanicus, on campaigns in the north of Germania. He wore a miniature soldier's outfit, including army boots (caligae) and armour. The soldiers thus nicknamed him Caligula ("little boot"). He reportedly grew to dislike the nickname. Germanicus died at Antioch, Syria, in AD 19, aged only 33. Suetonius claims that Germanicus was poisoned by an agent of Tiberius, who viewed Germanicus as a political rival. After the death of his father, Caligula lived with his mother, Agrippina, until her relations with Tiberius deteriorated. Tiberius would not allow Agrippina to remarry for fear her husband would be a rival. Agrippina and Caligula's brother, Nero, were banished in the year 29 on charges of treason. The adolescent Caligula was sent to live with his great-grandmother (Tiberius' mother), Livia. After her death, he was sent to live with his grandmother Antonia Minor. In the year 30, his brother Drusus was imprisoned on charges of treason, and his brother Nero died in exile from either starvation or suicide. After the banishment of his mother and brothers, Caligula and his sisters were hostages of Tiberius, kept under close watch. In the year 31, Caligula was remanded to the personal care of Tiberius at Villa Jovis on Capri, where he lived for six years. To the surprise of many, Tiberius spared Caligula. Roman historians describe Caligula at this time as a first-rate orator, well-informed, cultured and intelligent, an excellent natural actor who recognized the danger he was in, and hid his resentment of Tiberius' maltreatment of himself and his family behind such an obsequious manner that it was said of him that there had never been "a better slave or a worse master!" Caligula was befriended by Tiberius' Praetorian prefect, Naevius Sutorius Macro. Macro had been active in the downfall of Sejanus, his predecessor, and was a trusted communicant between the emperor, and his senate in Rome. Macro spoke well of Caligula to Tiberius, attempting to quell any ill will or suspicion the Emperor held towards the youth; Macro also saved Caligula's life on several occasions. In 33, Tiberius gave the 20 year old Caligula an honorary quaestorship, the lowest ranking office in the cursus honorum (course of offices); Caligula held this very junior post as a member of the Senate until his rise to emperor. Meanwhile, both Caligula's mother and his brother Drusus died in prison. In the same year, Tiberius arranged Caligula's marriage to Junia Claudilla, daughter to Marcus Junius Silanus, one of Tiberius' most influential allies in the Senate. She died in childbirth the following year. In the year 35, Caligula was named joint heir to Tiberius' estate along with Tiberius Gemellus, Tiberius' grandson. Gemellus was Caligula's junior by seven years, not yet an adult, but was otherwise a viable candidate for the throne; Tiberius seemed in good health, and likely to survive to Gemellus' majority. In Philo's account, Tiberius was genuinely fond of Gemellus, and feared for his safety should Caligula come to power. He also doubted Gemellus' personal capacity to rule. Suetonius claims that Tiberius, ever mistrustful but still shrewd in his mid 70's, saw through Caligula's apparent self-possession to an underlying "erratic and unreliable" temperament, not one to be trusted in government. Many believed that given a little more time, Tiberius would have eliminated Caligula from the running but died before this could be done. Caligula, although woefully inexperienced in government and the day-to-day exercise of political power, was made emperor. Suetonius claims that Caligula was by this time already cruel and vicious, and that Tiberius allowed him to live so that he "prove the ruin of himself and of all men, and that he was rearing a viper for the Roman people and a Phaethon for the world." Winterling points out that this judgment draws on later, not particularly accurate accounts of Caligula's rule, and it credits Tiberius with a knowledge of human nature which in reality was not only foreign to him, but famously unsound. Suetonius account is false; at Capri, Caligula had learned to dissimulate. He probably owed his life to that and, as all the ancient sources agree, to Macro. Tiberius died on 16 March AD 37, a day before the Liberalia festival. Suetonius and Tacitus repeat rumours that Caligula, possibly assisted by Macro, personally smothered Tiberius with a pillow. Philo, who wrote during Tiberius' reign, and Josephus, who served Nero a generation later, describe Tiberius' death as natural. On the same day, Caligula was proclaimed emperor by members of the Praetorian guard at Misenum. His leadership of the domus Caesaris ("Caesar's household") as its sole heir and pater familias was ratified by the senate, who acclaimed him imperator in his absence. When he arrived in Rome, on 28 March, the Senate conferred on him the "right and power to decide on all affairs". Tiberius' will, naming two heirs, was annulled with the standard justification that he had been insane, incapable of good judgment. Caligula continued to benefit from Macro's advice and savoir faire concerning the behaviour and manners appropriate to a princeps at banquets, games, law courts, debates and receptions of foreign dignitaries. Caligula took up a first consulship some months after succession. He refused the title pater patriae ("father of the fatherland") on the grounds of his youth, until the year 37. To legalise Caligula's succession, the Senate was compelled to constitutionally describe and define his role, but the rites and sacrifices to the living genius of the emperor already acknowledged his constitutionally unlimited powers over his "friends" and opponents alike. Each princeps was, in reality, a monarch who played the challenging role of primus inter pares ("first among equals") not through the exercise of policy but through his personal qualities of self-restraint, decorum, persuasion and above all, tact; qualities essential to any of the nobility who aspired to high office. Caligula's father, Germanicus, had been a superb diplomat, and a skilled orator. Caligula showed the beginnings of a considerable talent for oratory and diplomacy but once he became emperor, he tended to speak his mind, something Barrett describes as being of little value in politics Philo describes Caligula as the first emperor admired by "all the world, from the rising to the setting sun." Suetonius writes that Caligula was loved by many, for being the beloved son of the popular Germanicus and for not being Tiberius. Three months of public rejoicing ushered in the new reign. Philo describes the first seven months of Caligula's reign as a "Golden Age" of happiness and prosperity, with the new emperor celebrated throughout Roman and allied territories by a succession of thanksgiving festivals and entertainments. Although Tiberius' will had been set aside, Caigula honoured many of its terms. Tiberius had provided each praetorian guardsman with a generous gratitude payment of 500 sesterces. Caligula doubled this, and took credit for its payment as an act of personal generosity; he paid further bonuses to the city troops and the army outside Italy. Every citizen in Rome was given 150 sesterces, and heads of households twice that amount. Caligula staged exceptionally lavish gladiator games, being granted exemption by the senate from sumptuary laws that limited the number of gladiators to be kept in Rome. He restored the right to elect praetors to the comitia, which meant in practice that the aediles who managed the games, and maintained the fabric of roads and shrines had incentives to spend money on lavish spectacles to win popularity. Building projects on the Palatine hill and elsewhere were also announced, which would have been the largest of these expenditures. Caligula made a public show of burning Tiberius' secret papers, which outlined many of the senate's various acts of villainy, betrayal and treason against itself and the previous emperor. Caligula claimed - falsely, as it turned out - that he had read none of these documents before burning them. He used coinage issues to advertise his restoration of the rule of law and reduced a backlog of court cases in Rome by adding more jurors and suspending the requirement that sentences be confirmed by imperial office. Stressing his descent from Augustus, he went in person to retrieve the remains of his mother and brothers for interment in the Mausoleum of Augustus. He granted his sisters and other family members, including Claudius – who had not been recognised as a member of the imperial household during Tiberius' reign – political and priestly honours. He began work on a temple to Livia, widow of Augustus; she held the honorific title of Augusta while still living, and was eventually made a diva (goddess) of the Roman state under Claudius. The temple had been vowed in her lifetime, but not constructed. Claudius was made Caligula's consular colleague in the new emperor's first consulship. Those whom Tiberius alone had supported lost out; most were purged, though not immediately. Philo reports that in late 37, Caligula suffered a serious illness, and hovered between life and death for some time. He was still a very popular emperor, and Rome's public places were filled by citizens who implored the gods for his recovery, some even offering themselves and their lives in return. Gemellus, having been happily adopted into the Imperial line as Caligula's son, and given the adult toga virilis, was charged with having taken an antidote, "implicitly accusing Caligula of wanting to poison him"; he was forced to kill himself. Tiberius' political associate Silanus, senior senator, ex-consul, once Caligula's father-in-law, criticised by the historian Tacitus for his servile attitude, was executed as a supporter of Gemellus; in early 38, Caligula forced suicide on his Praetorian Prefect, Macro, without whose help and protection he would not have survived, let alone gained the throne as sole ruler. These purges suggest to Weidemann that "the new emperor had learnt a great deal from Tiberius" and "that attempts to divide his reign into a 'good' beginning followed by unremitting atrocities... are misplaced". This division into good and bad phases has variously been attributed to the death of Antonia in summer 37, Caligula's illness in autumn that year, or the death of Caligula's beloved sister Drusilla on 10 June AD 38. During his illness in AD 37 and after Gemellus' death, Caligula named his brother-in-law, Marcus Aemilius Lepidus as heir, marrying him to his sister Drusilla. Ancient sources allege that he and Lepidus were homosexual lovers. After Drusilla's death in June AD 38, she was deified in September the same year. Caligula shared many of the popular passions and enthusiasms of the lower classes and young aristocrats: public spectacles, particularly gladiator contests, chariot and horse racing, the theatre and gambling. Unlike his imperial predecessors, he was openly and vocally partisan in his uninhibited support or disapproval of particular charioteers, racing teams, gladiators and actors, shouting encouragement or scorn, sometimes singing along with paid performers or declaiming the actors' lines, and generally behaving as "one of the crowd". In chariot races, he supported the Greens, and raced as a member of the Green faction. Most of Rome's upper class would have thought this an unacceptable indignity for any of the elite, let alone their emperor. In these public appearances, Caligula seems to have shown little respect for distinctions of rank, status or privilege, least of all to the senate, whose members Tiberius had once described as "men ready to be slaves". Among those Caligula recalled from exile were actors and other public performers who had somehow caused Tiberius offence. On the whole, Caligula seems to have been most comfortable in the company of infamous and disreputable public performers and the lower nobility (equestrians) rather than with the senators and nobles, whom he clearly and openly despised and humiliated for their insincere simulations of loyalty. Roman sources claim that Caligula forced equestrians and even some senators to fight in the arena as gladiators; Condemnation to the gladiator arena was a standard punishment, doubling as public entertainment, for non-citizens found guilty of certain offences; Laws of AD 19 by Augustus and Tiberius banned voluntary elite participation in any public spectacles. The ban was never particularly effective; Caligula broadly ignored it. Two citizens, one of whom was an equestrian, offered to fight as gladiators during Caligula's illness, if only the gods would spare him. When Caligula recovered, he seems to have called in the debt, in what Winterling (2011) describes as insincere offers taken at face value: "cynical, but not without wit of a kind". Both volunteers died in the arena. Barrett (2015), offers evidence of Caligula's respect and support for the equestrian order. To reverse its declining membership, Caligula recruited new, wealthy members empire-wide, and scrupulously vetted the order's membership lists for signs of dishonesty or scandal. He seems to have ignored trivial misdemeanours; during his reign, laws forbidding voluntary appearance of high status citizens in arenas or on stage, on pain of infamy seem to have been broadly disregarded. Caligula tried to maintain open government, and to recognise and follow good advice, no matter what its source. In 38, he lifted censorship, and published accounts of public funds and expenditure, which Suetonus claims had not been made public during the reign of Tiberius. Though wilful by temperament, he was quite capable of recognising decisions as flawed, including his own, or reversing them in the face of implacable opposition. He abandoned his proposal to restore elections, because the senate resisted it; and he abandoned his plan to convert the Temple of Jerusalem to a temple of the Imperial cult, with a statue of himself as Zeus, when told that the plan would arouse extreme protests, and injure the local economy. He helped those who lost property in fires, abolished certain taxes, and gave out prizes to the public at gymnastic events. According to Cassius Dio, a financial crisis emerged in 39. Suetonius places the beginning of this crisis in 38, when Caligula's extravagance is supposed to have exhausted the state treasury. To make good the deficit, Caligula is said to have falsely accused, fined and even killed wealthy individuals to seize their estates. Caligula asked the public to lend the state money. He levied taxes on lawsuits, weddings and prostitution. Caligula began auctioning the lives of the gladiators at shows. Wills that left items to Tiberius were reinterpreted to leave the items instead to Caligula. Centurions who had acquired property by plunder were forced to turn over spoils to the state. The current and past highway commissioners were accused of incompetence and embezzlement and forced to repay money. According to Suetonius, in the first year of Caligula's reign he squandered 2.7 billion sesterces that Tiberius had amassed. His nephew Nero both envied and admired the fact that Caligula had run through the vast wealth Tiberius had left him in so short a time. To Wilkinson, Caligula's uninterrupted use of precious metals in coin issues does not suggest a bankrupt treasury, though there must have been a blurring of boundaries between Caligula's personal wealth, and his income as head of state. Caligula's immediate successor, Claudius, abolished taxes, embarked on various costly building projects and donated 15,000 sesterces to each Praetorian Guard in 41 as his own reign began, which suggests that Caligula had left him a solvent treasury, not a bankrupt empire. There was a brief grain-famine of unknown extent and cause. Suetonius claims it resulted from Caligula's seizure of public carriages for use in his campaigns in the North. Josephus describes Caligula's improvements to the harbours at Rhegium and Sicily, allowing increased grain imports from Egypt, as his greatest contributions. These improvements may have been in response to the famine. Caligula completed the temple of Augustus and the theatre of Pompey, began an amphitheatre beside the Saepta and enlarged the imperial palace. Later, he began the construction of aqueducts Aqua Claudia and Anio Novus, which Pliny the Elder considered to be engineering marvels. Caligula then built a large racetrack known as the circus of Gaius and Nero and had an Egyptian obelisk (now known as the "Vatican Obelisk") transported by sea and erected in the middle of Rome. Construction of the aqueduct Porta Maggiore started under his rule. At Syracuse, he repaired the city walls and temples. He had new roads built and pushed to keep roads in good condition. Caligula had planned to rebuild the palace of Polycrates at Samos, to finish the temple of Didymaean Apollo at Ephesus and to found a city high up in the Alps. He also intended to dig a canal through the Isthmus of Corinth in Greece and sent a chief centurion to survey the work. In 39, Caligula performed a spectacular stunt by ordering a temporary floating bridge to be built using ships as pontoons, stretching for over two miles from the resort of Baiae, near Naples, to the neighbouring port of Puteoli. It was said that the bridge was to rival the Persian king Xerxes' pontoon bridge crossing of the Hellespont. Caligula, who could not swim, then rode his favourite horse Incitatus across, wearing the supposed breastplate of Alexander the Great. Suetonius describes this as an act in defiance of a prediction by Tiberius' soothsayer Thrasyllus of Mendes that Caligula had "no more chance of becoming emperor than of riding a horse across the Bay of Baiae". Seneca believed that grain imports were dangerously depleted because the grain boats had been re-purposed for Caligula's bridge. Dio also believed that Caligula's bridge caused a grain famine; Bennett finds the accusation absurd and impossible; if the bridge was finished in 39, that was far too early to have had any effect on the grain supply, and "a genuine grain crisis was simply blamed on the most outlandish episode at hand." Dio places the same episode soon after Caligula's furious denunciation of the Senate; perhaps Caligula intended the event as an object lesson on how completely he was in charge. Caligula had two very large ships constructed at Lake Nemi. One was a floating palace, with plumbing and marble floors, and the other, slightly smaller, was a floating temple to Diana. Despite his dislike of the senate as a class, Caligula increased their number. In 39, Caligula's relationship with his Senate, increasingly tense for the previous two years, seems to have deteriorated into outright hostility and confrontation. On one occasion that year, Caligula launched a blanket attack of invective at the entire senatorial order. By now, there was little trace of the idealised princeps as First Senator. One of the earliest pertinent events that year was Caligula's election to a consulship. He would hold a consulship for each of the remaining three years of his life. It counted for little on a practical level. Barrett sees it as a symbol of Caligula's intention to dominate the government of the Roman state. He describes the change in Caligula's rule as a gradual unravelling, a "descent into serious mismanagement and impenetrable mistrust" - and latterly, into "arbitrary terror". Caligula had not, after all, destroyed Tiberius' records of treason trials. He reviewed them and decided that numerous senators who had given evidence were not trustworthy. Many of them had born false witness against his own family; if they had acted against Caligula's family, then why not against him? A new set of investigations was launched. In consequence, the consul was replaced and several senators were put to death, others were publicly shamed and degraded. Soon after this, Caligula faced a number of additional conspiracies. That autumn, he claimed to have uncovered a conspiracy to replace him with his then-heir Lepidus. Publicising the failure of the sitting consuls to offer prayers on his birthday – 31 August – he gave orders to concentrate military forces in upper Germany. The governor there, Gnaeus Cornelius Lentulus Gaetulicus was possibly a threat and after Caligula's arrival there, was executed. Lepidus, Agrippina, and Livilla, were accused of being part of this conspiracy; Lepidus was executed and the two sisters were exiled after being condemned pro forma of adultery. Very late in his reign, possibly in its last few days, Caligula sent a communique in preparation for his imminent ovation following his military activities in the North. He announced that he would only be returning "to those who wanted him back"; to the "Equestrians and the People"; he did not mention the Senate or senators, of whom he had grown increasingly mistrustful. In 40, Caligula expanded the Roman Empire into Mauretania, a client kingdom of Rome ruled by Ptolemy of Mauretania. Caligula invited Ptolemy to Rome and then suddenly had him executed. Mauretania was annexed by Caligula and subsequently divided into two provinces, Mauretania Tingitana and Mauretania Caesariensis, separated by the river Malua. Pliny claims that division was the work of Caligula, but Dio states that in 42 an uprising took place, which was subdued by Gaius Suetonius Paulinus and Gnaeus Hosidius Geta, and the division only took place after this. This confusion might mean that Caligula decided to divide the province, but the division was postponed because of the rebellion. The first known equestrian governor of the two provinces was Marcus Fadius Celer Flavianus, in office in 44. Details on the Mauretanian events of 39–44 are unclear. Cassius Dio wrote an entire chapter on the annexation of Mauretania by Caligula, but it is now lost. Caligula's move seemingly had a strictly personal political motive – fear and jealousy of his cousin Ptolemy – and thus the expansion may not have been prompted by pressing military or economic needs. However, the rebellion of Tacfarinas had shown how exposed Africa Proconsularis was to its west and how the Mauretanian client kings were unable to provide protection to the province, and it is thus possible that Caligula's expansion was a prudent response to potential future threats. Caligula brought up abortive attempts to extend Roman rule into Britannia. Two legions had been raised for this purpose (both were likely named Primigeniae in honour of Caligula's newborn daughter). Ancient sources depict Caligula as being too cowardly to have attacked or as mad, but stories of his threatening decimation indicates mutinies. Broadly, "it is impossible to judge why the army never embarked" on the invasion. Beyond mutinies, it may have simply been that British chieftains acceded to Rome's demands, removing any justification for war. Alternatively, it could have been merely a training and scouting mission or a short expedition to accept the surrender of the British chieftain Adminius. Suetonius reports that Caligula ordered his men to collect seashells as "spoils of the sea"; this may also be a mistranslation to musculi, meaning siege engines. The conquest of Britannia was later achieved during the reign of his successor, Claudius. When Tiberius died, hated by his subjects, Caligula dutifully asked the Senate to approve his deification but was turned down, in line with senatorial and popular opinion. Caligula did not push the issue. He gave Tiberius a magnificent, long drawn out funeral at public expense, and a tearful eulogy. In the first six months of his reign, he made a good impression, refusing costly honours such as statuary of himself, and apparently promising to share power with his senate, as primus inter pares ("first among equals"). His modesty and personal generosity earned him broad approval; but at some time early in his short reign, possibly following his near-mortal illness of late 37 AD, this changed. Philo, Caligula's contemporary, claims that Caligula costumed himself as various heroes and deities, starting with demigods such as Dionysos, Herakles and the Dioscuri, and working up to major deities such as Mercury, Venus and Apollo. Philo describes these impersonations in a context of private pantomime or theatrical performances, as evidence that Caligula wanted to be a god himself, and be venerated as such. To Philo, as a Jew and a monotheist, this was proof of the emperor's insanity. There were, however, Roman precedents for cult honours paid to living mortals; the costume of triumphant generals recalled the image of Capitoline Jupiter, best and greatest. Julius Caesar was designated Jupiter Julius, and was voted a temple by the senate to honour his clementia (clemency). Mark Antony was chosen as his high priest. It was rumoured that Caesar intended a despotic removal of power and wealth from Rome eastwards, perhaps to Alexandria or Ilium (Troy). Caesar's heir, Augustus, briefly considered a move to Alexandria. Early in his imperial career, he had thrown a party in which he and his guests dressed up as the twelve Olympian gods; no-one was claiming to be the god they impersonated, but it was in scandalously bad taste and was not repeated at any time during his reign. Dio claims that Caligula impersonated Jupiter to seduce various women. Philo's cast-list of Caligula's impersonations did not include Jupiter at all. To Gradel, the same performances prove no more than Caligula's penchant for theatrical fancy-dress and a mischievous desire to shock; as emperor, Caligula was also pontifex maximus, one of Rome's most powerful and influential state priests. While he seems to have been amused by baiting the elite who held Rome's most important priesthoods, Caligula seems to have taken his own religious duties very seriously, reorganising the Salii (priests of Mars), and pedantically insisting that as it was nefas (religiously improper) for Jupiter's leading priest, the Flamen Dialis, to swear any oath, he could not swear the imperial oath of loyalty. Suetonius claims that Caligula found a replacement for the aging priest of Diana's ancient sanctuary at Lake Nemi. Traditionally, the priest must be slain by a runaway slave, who must then replace him; the "slaying" was almost certainly not actual; had it been so, Suetonius would certainly have seized on the opportunity to depict Caligula as a sacrilegious murderer. Of Caligula's two vast and exquisitely appointed ships retrieved in the 1920's from long submergence at Lake Nemi, one was a floating palace, and the other was a "floating temple" for the goddess. Dio claims that Caligula sometimes referred to himself as a divinity in public meetings, and was sometimes referred to in turn as "Jupiter" in public documents; Caligula's special interest in Jupiter as Rome's chief deity is confirmed by all surviving sources. Simpson believes that Caligula may have considered Jupiter an equal, perhaps a rival. In Rome's eastern provinces, cults to rulers as divine and semi-divine saviours and monarchs were long-standing institutions; one of the best known examples is that of Alexander the Great, a divine monarch to at least some of his subjects, and whom Caligula also impersonated. The promotion of mortals to godlike status, based on their superior standing and perceived merits, was also a well established feature of Roman culture; a client could flatter their living patron as "Jupiter on earth", without reprimand. Daily cult was offered as a matter of course to patrons, heads of household and the powerful by their clients, families and social inferiors. In 30 BC, libation-offerings to the genius of Octavian (later Augustus) became a duty at public and private banquets, and from 12 BC, state oaths were sworn by the genius of Augustus as the living emperor. There is no evidence in Rome or elsewhere for Caligula's cult, nor any evidence that Caligula intended to impose it universally, let alone to supplant Rome's most important deity and protector, Capitoline Jupiter. A temple to Caligula in the city of Rome is mentioned only by Suetonius and Dio. Most modern scholarship agrees that if such a temple existed, it was probably on the Palatine. Augustus had already linked the Temple of Castor and Pollux directly to his imperial residence on the Palatine, and established an official priesthood of lesser magistrates to serve its cults, the seviri Augustales, usually promoted from his own freedmen to serve the genius Augusti (his "family spirit") and Lares (the twin ancestral spirits of his household). Dio claims that Caligula stationed himself to receive veneration, dressed as Jupiter Latiaris, between the images of Castor and Pollux, the twin Dioscuri, to whom he humorously referred as his doorkeepers. An embassy from Greek states to Rome greeted Caligula as the "new god Augustus". In the Greek city of Cyzicus, a public inscription from the beginning of Caligula's reign gives thanks to him as a "New Sun-god". Egyptian provincial coinage and some state dupondii show Caligula enthroned; the first reigning Roman princeps described as the "New Sun", (Neos Helios) with the radiate crown of the Sun-god, or of Caligula's divine antecedent, the divus Augustus. Caligula's image on other state coinage carries no such "trappings of divinity". Compared to the full-blown cults to major deities of state, genius cults were quite modest in scope and religious paraphernalia Augustus, once deceased, was officially worshipped as a divus - immortal, but somewhat less than a full-blown deity; Tiberius, his successor, forbade his own personal cult outright in Rome itself, probably in consideration of Julius Caesar's assassination following his hubristic promotion as a living divinity. Dio claims that two temples were built for Caligula in Rome: but no confirmation has been found for this. Simpson believes it likely that Caligula, voted a temple on the Palatine by the Senate, funded it himself. Gradel sees Caligula's reported extortion of priesthood fees from an unwilling aristocracy, including his uncle Claudius, as a mark of private cult and personal humiliation, contained among the wealthy elite. Throughout his reign, Caligula seems to have remained popular with the masses, in Rome and the empire. There is no sound evidence that he caused the removal, replacement or imposition of Roman or other deities, or even that he threatened to do so, outside the hostile anecdotes of his biographers. Barrett (2015) asserts that the "emphatic and unequivocal message of the material evidence is that Caligula had no desire for the world to identify him as a god, even if, like most people, he enjoyed being treated like one." He seems to have taken his own genius cult very seriously, but as Gradel observes, no Roman was ever prosecuted for sacrificing to his emperor. Caligula's fatal offense was to willfully "insult or offend everyone who mattered", including the military officers who assassinated him. Caligula needed to quell several riots and conspiracies in the eastern territories during his reign. Aiding him in his actions was his good friend, Herod Agrippa, who became governor of the territories of Batanaea and Trachonitis after Caligula became emperor in 37. The cause of tensions in the east was complicated, involving the spread of Greek culture, Roman law and the rights of Jews in the empire. Caligula did not trust the prefect of Egypt, Aulus Avilius Flaccus. Flaccus had been loyal to Tiberius, had conspired against Caligula's mother and had connections with Egyptian separatists. In 38, Caligula sent Agrippa to Alexandria unannounced to check on Flaccus. According to Philo, the visit was met with jeers from the Greek population who saw Agrippa as the king of the Jews. As a result, riots broke out in the city. Caligula responded by removing Flaccus from his position and executing him. In 39, Agrippa accused his uncle Herod Antipas, the tetrarch of Galilee and Perea, of planning a rebellion against Roman rule with the help of Parthia. Herod Antipas confessed and Caligula exiled him. Agrippa was rewarded with his territories. Riots again erupted in Alexandria in 40 between Jews and Greeks. Jews were accused of not honouring the emperor. Disputes occurred in the city of Jamnia; Jews were angered by the erection of a clay altar and destroyed it. In response, Caligula ordered the erection of a statue of himself in the Jewish Temple of Jerusalem, a demand in conflict with Jewish monotheism. In this context, Philo wrote that Caligula "regarded the Jews with most especial suspicion, as if they were the only persons who cherished wishes opposed to his". The Governor of Syria, Publius Petronius, fearing civil war if the order were carried out, delayed implementing it for nearly a year. Agrippa finally convinced Caligula to reverse the order. However, Caligula issued a second order to have his statue erected in the Temple of Jerusalem. In Rome, another statue of himself, of colossal size, was made of gilt brass for the purpose. However, according to Josephus, when the ship carrying the statue was still underway, news of Caligula's death reached Petronius. Thus, the statue was never installed. Philo and Seneca the Younger, contemporaries of Caligula, describe him as an insane emperor who was self-absorbed and short-tempered, who killed on a whim and indulged in too much spending and sex. He is accused of sleeping with other men's wives and bragging about it, killing for mere amusement, deliberately wasting money on his bridge, causing starvation, and wanting a statue of himself in the Temple of Jerusalem for his worship. Once, at some games at which he was presiding, he was said to have ordered his guards to throw an entire section of the audience into the arena during the intermission to be eaten by the wild beasts because there were no prisoners to be used and he was bored. While repeating these earlier stories, the later sources of Suetonius and Cassius Dio provide additional tales of insanity. They accuse Caligula of incest with his sisters, Agrippina the Younger, Drusilla, and Livilla, and say that he prostituted them to other men. Additionally, they mention affairs with various men including his brother-in-law Marcus Lepidus. They say he sent troops on illogical military exercises, turned the palace into a brothel, and, most famously, planned or promised to make his horse, Incitatus, a consul, and appointed a priest to serve him. The validity of these accounts is debatable. In Roman political culture, insanity and sexual perversity were often presented hand-in-hand with poor government. Caligula's actions as emperor were described as being especially harsh to the Senate. According to Josephus, these actions led to several failed conspiracies against Caligula. Eventually, officers within the Praetorian Guard led by Cassius Chaerea succeeded in murdering the emperor. The plot is described as having been planned by three men, but many in the Senate, army and equestrian order were said to have been informed of and involved in it. The situation had escalated when, in the year 40, Caligula announced to the Senate that he planned to leave Rome permanently and to move to Alexandria in Egypt, and rule from there as a divine monarch, a Roman pharaoh: wherever the emperor went was the seat of Rome's power. Augustus had made Egypt a so-called "Imperial province", under his direct control, rather than that of the Senate. It was the main source of Italy's grain supply, and was administered by members of the equestrian order who were directly responsible to the ruling emperor. Senators had very little control of its affairs, despite their higher status; Egypt was, more or less, Caligula's property, to dispose as he wished. According to Josephus, Caligula was scheduled to leave Rome for Alexandria on 25 January 41. With this in mind Chaerea persuaded his fellow conspirators, who included Marcus Vinicius and Lucius Annius Vinicianus, to put their plot into action quickly. According to Josephus, Chaerea had political motivations for the assassination. Suetonius sees the motive in Caligula calling Chaerea derogatory names. Caligula considered Chaerea effeminate because of a weak voice and for not being firm with tax collection. Caligula would mock Chaerea with names like "Priapus" and "Venus". On 24 January 41, Cassius Chaerea and other guardsmen accosted Caligula as he addressed an acting troupe of young men beneath the palace during a series of games and dramatics being held for the Divine Augustus. Details recorded on the events vary somewhat from source to source, but they agree that Chaerea stabbed Caligula first, followed by a number of conspirators. Suetonius records that Caligula's death resembled that of Julius Caesar. He states that both the elder Gaius Julius Caesar (Julius Caesar) and the younger Gaius Julius Caesar (Caligula) were stabbed 30 times by conspirators led by a man named Cassius (Cassius Longinus and Cassius Chaerea respectively). By the time Caligula's loyal Germanic guard responded, the Emperor was already dead. The Germanic guard killed several assassins and conspirators, along with some innocent senators and bystanders. The cryptoporticus (underground corridor) beneath the imperial palaces on the Palatine Hill where this event took place was discovered by archaeologists in 2008. The Senate attempted to use Caligula's death as an opportunity to restore the Republic. Chaerea tried to persuade the military to support the Senate. The military, though, remained loyal to the idea of imperial monarchy. Uncomfortable with lingering imperial support, the assassins sought out and killed Caligula's wife, Caesonia, and killed their young daughter, Julia Drusilla, by smashing her head against a wall. They were unable to reach Caligula's uncle, Claudius. A soldier, Gratus, found Claudius hiding behind a palace curtain; he was spirited out of the city by a sympathetic faction of the Praetorian Guard to their nearby camp. Claudius became emperor after procuring the support of the Praetorian Guard. Claudius granted a general amnesty, although he executed a few junior officers involved in the conspiracy, including Chaerea. According to Suetonius, Caligula's body was placed under turf until it was burned and entombed by his sisters. The facts and circumstances of Caligula's reign are mostly lost to history. Two major literary sources contemporary with Caligula have survived – the works of Philo and Seneca the Younger. Philo's works, On the Embassy to Gaius and Flaccus, give some details on Caligula's early reign, but mostly focus on events surrounding the Jewish population in Judea and Egypt with whom he sympathizes. Seneca's various works give mostly scattered anecdotes on Caligula's personality. Seneca was almost put to death by Caligula in AD 39, probably due to his associations with conspirators. At one time, there were detailed contemporaneous histories on Caligula, but they are now lost. Tacitus describes them as biased, either overly critical or praising Caligula. Nonetheless, these lost primary sources, along with the works of Seneca and Philo, were the basis of subsequent histories. Fabius Rusticus and Cluvius Rufus both wrote histories condemning Caligula. They are now lost, but Tacitus describes Fabius Rusticus as a friend of Seneca, and prone to embellishments and misrepresentations. Cluvius Rufus was a senator involved in Caligula's assassination. Caligula's sister, Agrippina the Younger, wrote an autobiography that included a detailed account of Caligula's reign, but it too is lost. Agrippina was banished by Caligula for her connection to Marcus Lepidus, who conspired against him. The inheritance of Nero, Agrippina's son and the future emperor, was seized by Caligula. Gaetulicus, a poet, produced a number of flattering writings about Caligula, but they are lost. Suetonius wrote his biography of Caligula 80 years after his assassination, and Cassius Dio over 180 years after. Dio's work offers a loose chronology. Josephus gives a detailed description of Caligula's assassination. Tacitus provides some information on Caligula's life under Tiberius. In a now lost portion of his Annals, Tacitus gave a detailed history of Caligula. Pliny the Elder's Natural History has a few brief references to Caligula. None of the few surviving sources paints Caligula in a favourable light. The paucity of sources has resulted in significant gaps in modern knowledge of the reign of Caligula. Little is written on the first two years of Caligula's reign, and there are only limited details on later significant events, such as the annexation of Mauretania, Caligula's military actions in Britannia, and his feud with the Roman Senate, whose class provides, almost without exception, the most blatantly hostile accounts of Caligula the man, his reign and his various infamies. Several contemporary and near-contemporary Roman sources describe Caligula as insane. It is notoriously difficult to distinguish fact from fiction among the many allegations of his aberrant behaviour as emperor. Several modern sources suggest various possible medical explanations, including encephalitis, epilepsy or meningitis, acquired during the illness early in his reign. Philo, Josephus and Seneca see Caligula's "insanity" as a personality trait acquired through self-indulgence and the unlimited exercise of power. Seneca states that Caligula became arrogant, angry and insulting once he became emperor. According to Josephus, the power Caligula was able to exercise led him to think himself a living God. Philo claims that Caligula became ruthless after nearly dying of an illness in the eighth month of his reign (in 37). Suetonius said that Caligula had "falling sickness", or epilepsy, when he was young. He may have lived in daily fear of seizures. In Romano-Greek medical theory, the most severe epilepsy attacks were associated with the full moon and the moon goddess Selene, with whom Caligula was claimed to converse and to enjoy sexual congress. Suetonius described Caligula as the following: "He was very tall and extremely pale, with an unshapely body, but very thin neck and legs. His eyes and temples were hollow, his forehead broad and grim, his hair thin and entirely gone on the top of his head, though his body was hairy... He was sound neither of body nor mind. As a boy he was troubled with the falling sickness, and while in his youth he had some endurance, yet at times because of sudden faintness he was hardly able to walk, to stand up, to collect his thoughts, or to hold up his head". Based on scientific reconstructions of his official painted busts, Caligula had brown hair, brown eyes, and fair skin. Some modern historians think that Caligula had hyperthyroidism. This diagnosis is mainly attributed to Caligula's irritability and his "stare" as described by Pliny the Elder.	[ { "paragraph_id": 0, "text": "Gaius Caesar Augustus Germanicus (31 August 12 – 24 January 41), better known by his nickname Caligula (/kəˈlɪɡjʊlə/), was Roman emperor from AD 37 until his assassination in AD 41. He was the son of the Roman general Germanicus and Agrippina the Elder, Augustus' granddaughter. Caligula was born into the first ruling family of the Roman Empire, conventionally known as the Julio-Claudian dynasty.", "title": "" }, { "paragraph_id": 1, "text": "Although Gaius was named after Gaius Julius Caesar, he acquired the nickname \"Caligula\" ('little boot'), the diminutive form of caliga, a military boot, from his father's soldiers during their campaign in Germania. When Germanicus died at Antioch in 19, Agrippina returned with her six children to Rome, where she became entangled in a bitter feud with the emperor Tiberius (Germanicus' biological uncle and adoptive father). The conflict eventually led to the destruction of her family, with Caligula as the sole male survivor. In 26, Tiberius withdrew from public life to the island of Capri, and in 31, Caligula joined him there. Following the former's death in 37, Caligula succeeded him as emperor, at the age of 24.", "title": "" }, { "paragraph_id": 2, "text": "There are few surviving sources about Caligula and his four-year reign. He is described as a noble and moderate emperor during the first six months of his rule, but after this, the sources focus upon his cruelty, sadism, extravagance, and sexual perversion, presenting him as an insane tyrant who demanded and received worship as a living god. The reliability of these sources is questionable; most modern commentaries seek to explain Caligula's position, personality and historical context. Many of the lurid, outrageous allegations against him have received close scrutiny in modern histories and are dismissed as misunderstandings, exaggeration, propaganda or malicious fantasy.", "title": "" }, { "paragraph_id": 3, "text": "During his brief reign, Caligula worked to increase the unconstrained personal power of the emperor, as opposed to countervailing powers within the principate. He directed much of his attention to ambitious construction projects and luxurious dwellings for himself. He began the construction of two aqueducts in Rome: the Aqua Claudia and the Anio Novus. During his reign, the empire annexed the client kingdom of Mauretania as a province. In early 41, Caligula was assassinated as a result of a conspiracy by officers of the Praetorian Guard, senators, and courtiers. At least some of the conspirators might have planned this as an opportunity to restore the Roman Republic and aristocratic privileges; but if so, their plan was thwarted by the Praetorians, who seem to have spontaneously chosen Caligula's uncle Claudius as the next emperor. Caligula's death marked the official end of the Julii Caesares in the male line, though the Julio-Claudian dynasty continued to rule until the demise of Caligula's nephew, Nero.", "title": "" }, { "paragraph_id": 4, "text": "Caligula was born in Antium on 31 August AD 12, the third of six surviving children of Germanicus and his wife and second cousin, Agrippina the Elder. Germanicus was a grandson of Mark Antony, and Agrippina was the daughter of Marcus Vipsanius Agrippa and Julia the Elder, making her the granddaughter of Augustus. The future emperor Claudius was Caligula's paternal uncle. Caligula had two older brothers, Nero and Drusus, and three younger sisters, Agrippina the Younger, Julia Drusilla and Julia Livilla. At the age of two or three, he accompanied his father, Germanicus, on campaigns in the north of Germania. He wore a miniature soldier's outfit, including army boots (caligae) and armour. The soldiers thus nicknamed him Caligula (\"little boot\"). He reportedly grew to dislike the nickname.", "title": "Early life" }, { "paragraph_id": 5, "text": "Germanicus died at Antioch, Syria, in AD 19, aged only 33. Suetonius claims that Germanicus was poisoned by an agent of Tiberius, who viewed Germanicus as a political rival. After the death of his father, Caligula lived with his mother, Agrippina, until her relations with Tiberius deteriorated. Tiberius would not allow Agrippina to remarry for fear her husband would be a rival. Agrippina and Caligula's brother, Nero, were banished in the year 29 on charges of treason. The adolescent Caligula was sent to live with his great-grandmother (Tiberius' mother), Livia. After her death, he was sent to live with his grandmother Antonia Minor. In the year 30, his brother Drusus was imprisoned on charges of treason, and his brother Nero died in exile from either starvation or suicide. After the banishment of his mother and brothers, Caligula and his sisters were hostages of Tiberius, kept under close watch.", "title": "Early life" }, { "paragraph_id": 6, "text": "In the year 31, Caligula was remanded to the personal care of Tiberius at Villa Jovis on Capri, where he lived for six years. To the surprise of many, Tiberius spared Caligula. Roman historians describe Caligula at this time as a first-rate orator, well-informed, cultured and intelligent, an excellent natural actor who recognized the danger he was in, and hid his resentment of Tiberius' maltreatment of himself and his family behind such an obsequious manner that it was said of him that there had never been \"a better slave or a worse master!\"", "title": "Early life" }, { "paragraph_id": 7, "text": "Caligula was befriended by Tiberius' Praetorian prefect, Naevius Sutorius Macro. Macro had been active in the downfall of Sejanus, his predecessor, and was a trusted communicant between the emperor, and his senate in Rome. Macro spoke well of Caligula to Tiberius, attempting to quell any ill will or suspicion the Emperor held towards the youth; Macro also saved Caligula's life on several occasions. In 33, Tiberius gave the 20 year old Caligula an honorary quaestorship, the lowest ranking office in the cursus honorum (course of offices); Caligula held this very junior post as a member of the Senate until his rise to emperor. Meanwhile, both Caligula's mother and his brother Drusus died in prison. In the same year, Tiberius arranged Caligula's marriage to Junia Claudilla, daughter to Marcus Junius Silanus, one of Tiberius' most influential allies in the Senate. She died in childbirth the following year. In the year 35, Caligula was named joint heir to Tiberius' estate along with Tiberius Gemellus, Tiberius' grandson. Gemellus was Caligula's junior by seven years, not yet an adult, but was otherwise a viable candidate for the throne; Tiberius seemed in good health, and likely to survive to Gemellus' majority.", "title": "Early life" }, { "paragraph_id": 8, "text": "In Philo's account, Tiberius was genuinely fond of Gemellus, and feared for his safety should Caligula come to power. He also doubted Gemellus' personal capacity to rule. Suetonius claims that Tiberius, ever mistrustful but still shrewd in his mid 70's, saw through Caligula's apparent self-possession to an underlying \"erratic and unreliable\" temperament, not one to be trusted in government. Many believed that given a little more time, Tiberius would have eliminated Caligula from the running but died before this could be done. Caligula, although woefully inexperienced in government and the day-to-day exercise of political power, was made emperor. Suetonius claims that Caligula was by this time already cruel and vicious, and that Tiberius allowed him to live so that he \"prove the ruin of himself and of all men, and that he was rearing a viper for the Roman people and a Phaethon for the world.\" Winterling points out that this judgment draws on later, not particularly accurate accounts of Caligula's rule, and it credits Tiberius with a knowledge of human nature which in reality was not only foreign to him, but famously unsound. Suetonius account is false; at Capri, Caligula had learned to dissimulate. He probably owed his life to that and, as all the ancient sources agree, to Macro.", "title": "Early life" }, { "paragraph_id": 9, "text": "Tiberius died on 16 March AD 37, a day before the Liberalia festival. Suetonius and Tacitus repeat rumours that Caligula, possibly assisted by Macro, personally smothered Tiberius with a pillow. Philo, who wrote during Tiberius' reign, and Josephus, who served Nero a generation later, describe Tiberius' death as natural. On the same day, Caligula was proclaimed emperor by members of the Praetorian guard at Misenum. His leadership of the domus Caesaris (\"Caesar's household\") as its sole heir and pater familias was ratified by the senate, who acclaimed him imperator in his absence. When he arrived in Rome, on 28 March, the Senate conferred on him the \"right and power to decide on all affairs\". Tiberius' will, naming two heirs, was annulled with the standard justification that he had been insane, incapable of good judgment. Caligula continued to benefit from Macro's advice and savoir faire concerning the behaviour and manners appropriate to a princeps at banquets, games, law courts, debates and receptions of foreign dignitaries. Caligula took up a first consulship some months after succession. He refused the title pater patriae (\"father of the fatherland\") on the grounds of his youth, until the year 37.", "title": "Emperor" }, { "paragraph_id": 10, "text": "To legalise Caligula's succession, the Senate was compelled to constitutionally describe and define his role, but the rites and sacrifices to the living genius of the emperor already acknowledged his constitutionally unlimited powers over his \"friends\" and opponents alike. Each princeps was, in reality, a monarch who played the challenging role of primus inter pares (\"first among equals\") not through the exercise of policy but through his personal qualities of self-restraint, decorum, persuasion and above all, tact; qualities essential to any of the nobility who aspired to high office. Caligula's father, Germanicus, had been a superb diplomat, and a skilled orator. Caligula showed the beginnings of a considerable talent for oratory and diplomacy but once he became emperor, he tended to speak his mind, something Barrett describes as being of little value in politics", "title": "Emperor" }, { "paragraph_id": 11, "text": "Philo describes Caligula as the first emperor admired by \"all the world, from the rising to the setting sun.\" Suetonius writes that Caligula was loved by many, for being the beloved son of the popular Germanicus and for not being Tiberius. Three months of public rejoicing ushered in the new reign. Philo describes the first seven months of Caligula's reign as a \"Golden Age\" of happiness and prosperity, with the new emperor celebrated throughout Roman and allied territories by a succession of thanksgiving festivals and entertainments.", "title": "Emperor" }, { "paragraph_id": 12, "text": "Although Tiberius' will had been set aside, Caigula honoured many of its terms. Tiberius had provided each praetorian guardsman with a generous gratitude payment of 500 sesterces. Caligula doubled this, and took credit for its payment as an act of personal generosity; he paid further bonuses to the city troops and the army outside Italy. Every citizen in Rome was given 150 sesterces, and heads of households twice that amount. Caligula staged exceptionally lavish gladiator games, being granted exemption by the senate from sumptuary laws that limited the number of gladiators to be kept in Rome. He restored the right to elect praetors to the comitia, which meant in practice that the aediles who managed the games, and maintained the fabric of roads and shrines had incentives to spend money on lavish spectacles to win popularity. Building projects on the Palatine hill and elsewhere were also announced, which would have been the largest of these expenditures.", "title": "Emperor" }, { "paragraph_id": 13, "text": "Caligula made a public show of burning Tiberius' secret papers, which outlined many of the senate's various acts of villainy, betrayal and treason against itself and the previous emperor. Caligula claimed - falsely, as it turned out - that he had read none of these documents before burning them. He used coinage issues to advertise his restoration of the rule of law and reduced a backlog of court cases in Rome by adding more jurors and suspending the requirement that sentences be confirmed by imperial office. Stressing his descent from Augustus, he went in person to retrieve the remains of his mother and brothers for interment in the Mausoleum of Augustus. He granted his sisters and other family members, including Claudius – who had not been recognised as a member of the imperial household during Tiberius' reign – political and priestly honours. He began work on a temple to Livia, widow of Augustus; she held the honorific title of Augusta while still living, and was eventually made a diva (goddess) of the Roman state under Claudius. The temple had been vowed in her lifetime, but not constructed. Claudius was made Caligula's consular colleague in the new emperor's first consulship.", "title": "Emperor" }, { "paragraph_id": 14, "text": "Those whom Tiberius alone had supported lost out; most were purged, though not immediately. Philo reports that in late 37, Caligula suffered a serious illness, and hovered between life and death for some time. He was still a very popular emperor, and Rome's public places were filled by citizens who implored the gods for his recovery, some even offering themselves and their lives in return. Gemellus, having been happily adopted into the Imperial line as Caligula's son, and given the adult toga virilis, was charged with having taken an antidote, \"implicitly accusing Caligula of wanting to poison him\"; he was forced to kill himself. Tiberius' political associate Silanus, senior senator, ex-consul, once Caligula's father-in-law, criticised by the historian Tacitus for his servile attitude, was executed as a supporter of Gemellus; in early 38, Caligula forced suicide on his Praetorian Prefect, Macro, without whose help and protection he would not have survived, let alone gained the throne as sole ruler. These purges suggest to Weidemann that \"the new emperor had learnt a great deal from Tiberius\" and \"that attempts to divide his reign into a 'good' beginning followed by unremitting atrocities... are misplaced\". This division into good and bad phases has variously been attributed to the death of Antonia in summer 37, Caligula's illness in autumn that year, or the death of Caligula's beloved sister Drusilla on 10 June AD 38.", "title": "Emperor" }, { "paragraph_id": 15, "text": "During his illness in AD 37 and after Gemellus' death, Caligula named his brother-in-law, Marcus Aemilius Lepidus as heir, marrying him to his sister Drusilla. Ancient sources allege that he and Lepidus were homosexual lovers. After Drusilla's death in June AD 38, she was deified in September the same year.", "title": "Emperor" }, { "paragraph_id": 16, "text": "Caligula shared many of the popular passions and enthusiasms of the lower classes and young aristocrats: public spectacles, particularly gladiator contests, chariot and horse racing, the theatre and gambling. Unlike his imperial predecessors, he was openly and vocally partisan in his uninhibited support or disapproval of particular charioteers, racing teams, gladiators and actors, shouting encouragement or scorn, sometimes singing along with paid performers or declaiming the actors' lines, and generally behaving as \"one of the crowd\". In chariot races, he supported the Greens, and raced as a member of the Green faction. Most of Rome's upper class would have thought this an unacceptable indignity for any of the elite, let alone their emperor.", "title": "Emperor" }, { "paragraph_id": 17, "text": "In these public appearances, Caligula seems to have shown little respect for distinctions of rank, status or privilege, least of all to the senate, whose members Tiberius had once described as \"men ready to be slaves\". Among those Caligula recalled from exile were actors and other public performers who had somehow caused Tiberius offence. On the whole, Caligula seems to have been most comfortable in the company of infamous and disreputable public performers and the lower nobility (equestrians) rather than with the senators and nobles, whom he clearly and openly despised and humiliated for their insincere simulations of loyalty.", "title": "Emperor" }, { "paragraph_id": 18, "text": "Roman sources claim that Caligula forced equestrians and even some senators to fight in the arena as gladiators; Condemnation to the gladiator arena was a standard punishment, doubling as public entertainment, for non-citizens found guilty of certain offences; Laws of AD 19 by Augustus and Tiberius banned voluntary elite participation in any public spectacles. The ban was never particularly effective; Caligula broadly ignored it. Two citizens, one of whom was an equestrian, offered to fight as gladiators during Caligula's illness, if only the gods would spare him. When Caligula recovered, he seems to have called in the debt, in what Winterling (2011) describes as insincere offers taken at face value: \"cynical, but not without wit of a kind\". Both volunteers died in the arena.", "title": "Emperor" }, { "paragraph_id": 19, "text": "Barrett (2015), offers evidence of Caligula's respect and support for the equestrian order. To reverse its declining membership, Caligula recruited new, wealthy members empire-wide, and scrupulously vetted the order's membership lists for signs of dishonesty or scandal. He seems to have ignored trivial misdemeanours; during his reign, laws forbidding voluntary appearance of high status citizens in arenas or on stage, on pain of infamy seem to have been broadly disregarded.", "title": "Emperor" }, { "paragraph_id": 20, "text": "Caligula tried to maintain open government, and to recognise and follow good advice, no matter what its source. In 38, he lifted censorship, and published accounts of public funds and expenditure, which Suetonus claims had not been made public during the reign of Tiberius. Though wilful by temperament, he was quite capable of recognising decisions as flawed, including his own, or reversing them in the face of implacable opposition. He abandoned his proposal to restore elections, because the senate resisted it; and he abandoned his plan to convert the Temple of Jerusalem to a temple of the Imperial cult, with a statue of himself as Zeus, when told that the plan would arouse extreme protests, and injure the local economy. He helped those who lost property in fires, abolished certain taxes, and gave out prizes to the public at gymnastic events.", "title": "Emperor" }, { "paragraph_id": 21, "text": "According to Cassius Dio, a financial crisis emerged in 39. Suetonius places the beginning of this crisis in 38, when Caligula's extravagance is supposed to have exhausted the state treasury. To make good the deficit, Caligula is said to have falsely accused, fined and even killed wealthy individuals to seize their estates. Caligula asked the public to lend the state money. He levied taxes on lawsuits, weddings and prostitution. Caligula began auctioning the lives of the gladiators at shows. Wills that left items to Tiberius were reinterpreted to leave the items instead to Caligula. Centurions who had acquired property by plunder were forced to turn over spoils to the state. The current and past highway commissioners were accused of incompetence and embezzlement and forced to repay money.", "title": "Emperor" }, { "paragraph_id": 22, "text": "According to Suetonius, in the first year of Caligula's reign he squandered 2.7 billion sesterces that Tiberius had amassed. His nephew Nero both envied and admired the fact that Caligula had run through the vast wealth Tiberius had left him in so short a time. To Wilkinson, Caligula's uninterrupted use of precious metals in coin issues does not suggest a bankrupt treasury, though there must have been a blurring of boundaries between Caligula's personal wealth, and his income as head of state. Caligula's immediate successor, Claudius, abolished taxes, embarked on various costly building projects and donated 15,000 sesterces to each Praetorian Guard in 41 as his own reign began, which suggests that Caligula had left him a solvent treasury, not a bankrupt empire. There was a brief grain-famine of unknown extent and cause. Suetonius claims it resulted from Caligula's seizure of public carriages for use in his campaigns in the North.", "title": "Emperor" }, { "paragraph_id": 23, "text": "Josephus describes Caligula's improvements to the harbours at Rhegium and Sicily, allowing increased grain imports from Egypt, as his greatest contributions. These improvements may have been in response to the famine. Caligula completed the temple of Augustus and the theatre of Pompey, began an amphitheatre beside the Saepta and enlarged the imperial palace. Later, he began the construction of aqueducts Aqua Claudia and Anio Novus, which Pliny the Elder considered to be engineering marvels. Caligula then built a large racetrack known as the circus of Gaius and Nero and had an Egyptian obelisk (now known as the \"Vatican Obelisk\") transported by sea and erected in the middle of Rome. Construction of the aqueduct Porta Maggiore started under his rule.", "title": "Emperor" }, { "paragraph_id": 24, "text": "At Syracuse, he repaired the city walls and temples. He had new roads built and pushed to keep roads in good condition. Caligula had planned to rebuild the palace of Polycrates at Samos, to finish the temple of Didymaean Apollo at Ephesus and to found a city high up in the Alps. He also intended to dig a canal through the Isthmus of Corinth in Greece and sent a chief centurion to survey the work. In 39, Caligula performed a spectacular stunt by ordering a temporary floating bridge to be built using ships as pontoons, stretching for over two miles from the resort of Baiae, near Naples, to the neighbouring port of Puteoli. It was said that the bridge was to rival the Persian king Xerxes' pontoon bridge crossing of the Hellespont. Caligula, who could not swim, then rode his favourite horse Incitatus across, wearing the supposed breastplate of Alexander the Great. Suetonius describes this as an act in defiance of a prediction by Tiberius' soothsayer Thrasyllus of Mendes that Caligula had \"no more chance of becoming emperor than of riding a horse across the Bay of Baiae\". Seneca believed that grain imports were dangerously depleted because the grain boats had been re-purposed for Caligula's bridge. Dio also believed that Caligula's bridge caused a grain famine; Bennett finds the accusation absurd and impossible; if the bridge was finished in 39, that was far too early to have had any effect on the grain supply, and \"a genuine grain crisis was simply blamed on the most outlandish episode at hand.\" Dio places the same episode soon after Caligula's furious denunciation of the Senate; perhaps Caligula intended the event as an object lesson on how completely he was in charge.", "title": "Emperor" }, { "paragraph_id": 25, "text": "Caligula had two very large ships constructed at Lake Nemi. One was a floating palace, with plumbing and marble floors, and the other, slightly smaller, was a floating temple to Diana.", "title": "Emperor" }, { "paragraph_id": 26, "text": "Despite his dislike of the senate as a class, Caligula increased their number. In 39, Caligula's relationship with his Senate, increasingly tense for the previous two years, seems to have deteriorated into outright hostility and confrontation. On one occasion that year, Caligula launched a blanket attack of invective at the entire senatorial order. By now, there was little trace of the idealised princeps as First Senator. One of the earliest pertinent events that year was Caligula's election to a consulship. He would hold a consulship for each of the remaining three years of his life. It counted for little on a practical level. Barrett sees it as a symbol of Caligula's intention to dominate the government of the Roman state. He describes the change in Caligula's rule as a gradual unravelling, a \"descent into serious mismanagement and impenetrable mistrust\" - and latterly, into \"arbitrary terror\".", "title": "Emperor" }, { "paragraph_id": 27, "text": "Caligula had not, after all, destroyed Tiberius' records of treason trials. He reviewed them and decided that numerous senators who had given evidence were not trustworthy. Many of them had born false witness against his own family; if they had acted against Caligula's family, then why not against him? A new set of investigations was launched. In consequence, the consul was replaced and several senators were put to death, others were publicly shamed and degraded. Soon after this, Caligula faced a number of additional conspiracies. That autumn, he claimed to have uncovered a conspiracy to replace him with his then-heir Lepidus. Publicising the failure of the sitting consuls to offer prayers on his birthday – 31 August – he gave orders to concentrate military forces in upper Germany. The governor there, Gnaeus Cornelius Lentulus Gaetulicus was possibly a threat and after Caligula's arrival there, was executed. Lepidus, Agrippina, and Livilla, were accused of being part of this conspiracy; Lepidus was executed and the two sisters were exiled after being condemned pro forma of adultery.", "title": "Emperor" }, { "paragraph_id": 28, "text": "Very late in his reign, possibly in its last few days, Caligula sent a communique in preparation for his imminent ovation following his military activities in the North. He announced that he would only be returning \"to those who wanted him back\"; to the \"Equestrians and the People\"; he did not mention the Senate or senators, of whom he had grown increasingly mistrustful.", "title": "Emperor" }, { "paragraph_id": 29, "text": "In 40, Caligula expanded the Roman Empire into Mauretania, a client kingdom of Rome ruled by Ptolemy of Mauretania. Caligula invited Ptolemy to Rome and then suddenly had him executed. Mauretania was annexed by Caligula and subsequently divided into two provinces, Mauretania Tingitana and Mauretania Caesariensis, separated by the river Malua. Pliny claims that division was the work of Caligula, but Dio states that in 42 an uprising took place, which was subdued by Gaius Suetonius Paulinus and Gnaeus Hosidius Geta, and the division only took place after this. This confusion might mean that Caligula decided to divide the province, but the division was postponed because of the rebellion. The first known equestrian governor of the two provinces was Marcus Fadius Celer Flavianus, in office in 44.", "title": "Emperor" }, { "paragraph_id": 30, "text": "Details on the Mauretanian events of 39–44 are unclear. Cassius Dio wrote an entire chapter on the annexation of Mauretania by Caligula, but it is now lost. Caligula's move seemingly had a strictly personal political motive – fear and jealousy of his cousin Ptolemy – and thus the expansion may not have been prompted by pressing military or economic needs. However, the rebellion of Tacfarinas had shown how exposed Africa Proconsularis was to its west and how the Mauretanian client kings were unable to provide protection to the province, and it is thus possible that Caligula's expansion was a prudent response to potential future threats.", "title": "Emperor" }, { "paragraph_id": 31, "text": "Caligula brought up abortive attempts to extend Roman rule into Britannia. Two legions had been raised for this purpose (both were likely named Primigeniae in honour of Caligula's newborn daughter). Ancient sources depict Caligula as being too cowardly to have attacked or as mad, but stories of his threatening decimation indicates mutinies. Broadly, \"it is impossible to judge why the army never embarked\" on the invasion. Beyond mutinies, it may have simply been that British chieftains acceded to Rome's demands, removing any justification for war. Alternatively, it could have been merely a training and scouting mission or a short expedition to accept the surrender of the British chieftain Adminius. Suetonius reports that Caligula ordered his men to collect seashells as \"spoils of the sea\"; this may also be a mistranslation to musculi, meaning siege engines. The conquest of Britannia was later achieved during the reign of his successor, Claudius.", "title": "Emperor" }, { "paragraph_id": 32, "text": "When Tiberius died, hated by his subjects, Caligula dutifully asked the Senate to approve his deification but was turned down, in line with senatorial and popular opinion. Caligula did not push the issue. He gave Tiberius a magnificent, long drawn out funeral at public expense, and a tearful eulogy. In the first six months of his reign, he made a good impression, refusing costly honours such as statuary of himself, and apparently promising to share power with his senate, as primus inter pares (\"first among equals\"). His modesty and personal generosity earned him broad approval; but at some time early in his short reign, possibly following his near-mortal illness of late 37 AD, this changed.", "title": "Emperor" }, { "paragraph_id": 33, "text": "Philo, Caligula's contemporary, claims that Caligula costumed himself as various heroes and deities, starting with demigods such as Dionysos, Herakles and the Dioscuri, and working up to major deities such as Mercury, Venus and Apollo. Philo describes these impersonations in a context of private pantomime or theatrical performances, as evidence that Caligula wanted to be a god himself, and be venerated as such. To Philo, as a Jew and a monotheist, this was proof of the emperor's insanity. There were, however, Roman precedents for cult honours paid to living mortals; the costume of triumphant generals recalled the image of Capitoline Jupiter, best and greatest. Julius Caesar was designated Jupiter Julius, and was voted a temple by the senate to honour his clementia (clemency). Mark Antony was chosen as his high priest. It was rumoured that Caesar intended a despotic removal of power and wealth from Rome eastwards, perhaps to Alexandria or Ilium (Troy). Caesar's heir, Augustus, briefly considered a move to Alexandria. Early in his imperial career, he had thrown a party in which he and his guests dressed up as the twelve Olympian gods; no-one was claiming to be the god they impersonated, but it was in scandalously bad taste and was not repeated at any time during his reign. Dio claims that Caligula impersonated Jupiter to seduce various women. Philo's cast-list of Caligula's impersonations did not include Jupiter at all. To Gradel, the same performances prove no more than Caligula's penchant for theatrical fancy-dress and a mischievous desire to shock; as emperor, Caligula was also pontifex maximus, one of Rome's most powerful and influential state priests.", "title": "Emperor" }, { "paragraph_id": 34, "text": "While he seems to have been amused by baiting the elite who held Rome's most important priesthoods, Caligula seems to have taken his own religious duties very seriously, reorganising the Salii (priests of Mars), and pedantically insisting that as it was nefas (religiously improper) for Jupiter's leading priest, the Flamen Dialis, to swear any oath, he could not swear the imperial oath of loyalty. Suetonius claims that Caligula found a replacement for the aging priest of Diana's ancient sanctuary at Lake Nemi. Traditionally, the priest must be slain by a runaway slave, who must then replace him; the \"slaying\" was almost certainly not actual; had it been so, Suetonius would certainly have seized on the opportunity to depict Caligula as a sacrilegious murderer. Of Caligula's two vast and exquisitely appointed ships retrieved in the 1920's from long submergence at Lake Nemi, one was a floating palace, and the other was a \"floating temple\" for the goddess.", "title": "Emperor" }, { "paragraph_id": 35, "text": "Dio claims that Caligula sometimes referred to himself as a divinity in public meetings, and was sometimes referred to in turn as \"Jupiter\" in public documents; Caligula's special interest in Jupiter as Rome's chief deity is confirmed by all surviving sources. Simpson believes that Caligula may have considered Jupiter an equal, perhaps a rival. In Rome's eastern provinces, cults to rulers as divine and semi-divine saviours and monarchs were long-standing institutions; one of the best known examples is that of Alexander the Great, a divine monarch to at least some of his subjects, and whom Caligula also impersonated. The promotion of mortals to godlike status, based on their superior standing and perceived merits, was also a well established feature of Roman culture; a client could flatter their living patron as \"Jupiter on earth\", without reprimand. Daily cult was offered as a matter of course to patrons, heads of household and the powerful by their clients, families and social inferiors. In 30 BC, libation-offerings to the genius of Octavian (later Augustus) became a duty at public and private banquets, and from 12 BC, state oaths were sworn by the genius of Augustus as the living emperor. There is no evidence in Rome or elsewhere for Caligula's cult, nor any evidence that Caligula intended to impose it universally, let alone to supplant Rome's most important deity and protector, Capitoline Jupiter.", "title": "Emperor" }, { "paragraph_id": 36, "text": "A temple to Caligula in the city of Rome is mentioned only by Suetonius and Dio. Most modern scholarship agrees that if such a temple existed, it was probably on the Palatine. Augustus had already linked the Temple of Castor and Pollux directly to his imperial residence on the Palatine, and established an official priesthood of lesser magistrates to serve its cults, the seviri Augustales, usually promoted from his own freedmen to serve the genius Augusti (his \"family spirit\") and Lares (the twin ancestral spirits of his household). Dio claims that Caligula stationed himself to receive veneration, dressed as Jupiter Latiaris, between the images of Castor and Pollux, the twin Dioscuri, to whom he humorously referred as his doorkeepers.", "title": "Emperor" }, { "paragraph_id": 37, "text": "An embassy from Greek states to Rome greeted Caligula as the \"new god Augustus\". In the Greek city of Cyzicus, a public inscription from the beginning of Caligula's reign gives thanks to him as a \"New Sun-god\". Egyptian provincial coinage and some state dupondii show Caligula enthroned; the first reigning Roman princeps described as the \"New Sun\", (Neos Helios) with the radiate crown of the Sun-god, or of Caligula's divine antecedent, the divus Augustus. Caligula's image on other state coinage carries no such \"trappings of divinity\". Compared to the full-blown cults to major deities of state, genius cults were quite modest in scope and religious paraphernalia Augustus, once deceased, was officially worshipped as a divus - immortal, but somewhat less than a full-blown deity; Tiberius, his successor, forbade his own personal cult outright in Rome itself, probably in consideration of Julius Caesar's assassination following his hubristic promotion as a living divinity.", "title": "Emperor" }, { "paragraph_id": 38, "text": "Dio claims that two temples were built for Caligula in Rome: but no confirmation has been found for this. Simpson believes it likely that Caligula, voted a temple on the Palatine by the Senate, funded it himself. Gradel sees Caligula's reported extortion of priesthood fees from an unwilling aristocracy, including his uncle Claudius, as a mark of private cult and personal humiliation, contained among the wealthy elite. Throughout his reign, Caligula seems to have remained popular with the masses, in Rome and the empire. There is no sound evidence that he caused the removal, replacement or imposition of Roman or other deities, or even that he threatened to do so, outside the hostile anecdotes of his biographers. Barrett (2015) asserts that the \"emphatic and unequivocal message of the material evidence is that Caligula had no desire for the world to identify him as a god, even if, like most people, he enjoyed being treated like one.\" He seems to have taken his own genius cult very seriously, but as Gradel observes, no Roman was ever prosecuted for sacrificing to his emperor. Caligula's fatal offense was to willfully \"insult or offend everyone who mattered\", including the military officers who assassinated him.", "title": "Emperor" }, { "paragraph_id": 39, "text": "Caligula needed to quell several riots and conspiracies in the eastern territories during his reign. Aiding him in his actions was his good friend, Herod Agrippa, who became governor of the territories of Batanaea and Trachonitis after Caligula became emperor in 37. The cause of tensions in the east was complicated, involving the spread of Greek culture, Roman law and the rights of Jews in the empire. Caligula did not trust the prefect of Egypt, Aulus Avilius Flaccus. Flaccus had been loyal to Tiberius, had conspired against Caligula's mother and had connections with Egyptian separatists. In 38, Caligula sent Agrippa to Alexandria unannounced to check on Flaccus. According to Philo, the visit was met with jeers from the Greek population who saw Agrippa as the king of the Jews. As a result, riots broke out in the city. Caligula responded by removing Flaccus from his position and executing him.", "title": "Emperor" }, { "paragraph_id": 40, "text": "In 39, Agrippa accused his uncle Herod Antipas, the tetrarch of Galilee and Perea, of planning a rebellion against Roman rule with the help of Parthia. Herod Antipas confessed and Caligula exiled him. Agrippa was rewarded with his territories. Riots again erupted in Alexandria in 40 between Jews and Greeks. Jews were accused of not honouring the emperor. Disputes occurred in the city of Jamnia; Jews were angered by the erection of a clay altar and destroyed it. In response, Caligula ordered the erection of a statue of himself in the Jewish Temple of Jerusalem, a demand in conflict with Jewish monotheism. In this context, Philo wrote that Caligula \"regarded the Jews with most especial suspicion, as if they were the only persons who cherished wishes opposed to his\".", "title": "Emperor" }, { "paragraph_id": 41, "text": "The Governor of Syria, Publius Petronius, fearing civil war if the order were carried out, delayed implementing it for nearly a year. Agrippa finally convinced Caligula to reverse the order. However, Caligula issued a second order to have his statue erected in the Temple of Jerusalem. In Rome, another statue of himself, of colossal size, was made of gilt brass for the purpose. However, according to Josephus, when the ship carrying the statue was still underway, news of Caligula's death reached Petronius. Thus, the statue was never installed.", "title": "Emperor" }, { "paragraph_id": 42, "text": "Philo and Seneca the Younger, contemporaries of Caligula, describe him as an insane emperor who was self-absorbed and short-tempered, who killed on a whim and indulged in too much spending and sex. He is accused of sleeping with other men's wives and bragging about it, killing for mere amusement, deliberately wasting money on his bridge, causing starvation, and wanting a statue of himself in the Temple of Jerusalem for his worship. Once, at some games at which he was presiding, he was said to have ordered his guards to throw an entire section of the audience into the arena during the intermission to be eaten by the wild beasts because there were no prisoners to be used and he was bored.", "title": "Emperor" }, { "paragraph_id": 43, "text": "While repeating these earlier stories, the later sources of Suetonius and Cassius Dio provide additional tales of insanity. They accuse Caligula of incest with his sisters, Agrippina the Younger, Drusilla, and Livilla, and say that he prostituted them to other men. Additionally, they mention affairs with various men including his brother-in-law Marcus Lepidus. They say he sent troops on illogical military exercises, turned the palace into a brothel, and, most famously, planned or promised to make his horse, Incitatus, a consul, and appointed a priest to serve him. The validity of these accounts is debatable. In Roman political culture, insanity and sexual perversity were often presented hand-in-hand with poor government.", "title": "Emperor" }, { "paragraph_id": 44, "text": "Caligula's actions as emperor were described as being especially harsh to the Senate. According to Josephus, these actions led to several failed conspiracies against Caligula. Eventually, officers within the Praetorian Guard led by Cassius Chaerea succeeded in murdering the emperor. The plot is described as having been planned by three men, but many in the Senate, army and equestrian order were said to have been informed of and involved in it. The situation had escalated when, in the year 40, Caligula announced to the Senate that he planned to leave Rome permanently and to move to Alexandria in Egypt, and rule from there as a divine monarch, a Roman pharaoh: wherever the emperor went was the seat of Rome's power. Augustus had made Egypt a so-called \"Imperial province\", under his direct control, rather than that of the Senate. It was the main source of Italy's grain supply, and was administered by members of the equestrian order who were directly responsible to the ruling emperor. Senators had very little control of its affairs, despite their higher status; Egypt was, more or less, Caligula's property, to dispose as he wished. According to Josephus, Caligula was scheduled to leave Rome for Alexandria on 25 January 41. With this in mind Chaerea persuaded his fellow conspirators, who included Marcus Vinicius and Lucius Annius Vinicianus, to put their plot into action quickly.", "title": "Emperor" }, { "paragraph_id": 45, "text": "According to Josephus, Chaerea had political motivations for the assassination. Suetonius sees the motive in Caligula calling Chaerea derogatory names. Caligula considered Chaerea effeminate because of a weak voice and for not being firm with tax collection. Caligula would mock Chaerea with names like \"Priapus\" and \"Venus\". On 24 January 41, Cassius Chaerea and other guardsmen accosted Caligula as he addressed an acting troupe of young men beneath the palace during a series of games and dramatics being held for the Divine Augustus. Details recorded on the events vary somewhat from source to source, but they agree that Chaerea stabbed Caligula first, followed by a number of conspirators. Suetonius records that Caligula's death resembled that of Julius Caesar. He states that both the elder Gaius Julius Caesar (Julius Caesar) and the younger Gaius Julius Caesar (Caligula) were stabbed 30 times by conspirators led by a man named Cassius (Cassius Longinus and Cassius Chaerea respectively). By the time Caligula's loyal Germanic guard responded, the Emperor was already dead. The Germanic guard killed several assassins and conspirators, along with some innocent senators and bystanders.", "title": "Emperor" }, { "paragraph_id": 46, "text": "The cryptoporticus (underground corridor) beneath the imperial palaces on the Palatine Hill where this event took place was discovered by archaeologists in 2008. The Senate attempted to use Caligula's death as an opportunity to restore the Republic. Chaerea tried to persuade the military to support the Senate. The military, though, remained loyal to the idea of imperial monarchy. Uncomfortable with lingering imperial support, the assassins sought out and killed Caligula's wife, Caesonia, and killed their young daughter, Julia Drusilla, by smashing her head against a wall. They were unable to reach Caligula's uncle, Claudius. A soldier, Gratus, found Claudius hiding behind a palace curtain; he was spirited out of the city by a sympathetic faction of the Praetorian Guard to their nearby camp. Claudius became emperor after procuring the support of the Praetorian Guard. Claudius granted a general amnesty, although he executed a few junior officers involved in the conspiracy, including Chaerea. According to Suetonius, Caligula's body was placed under turf until it was burned and entombed by his sisters.", "title": "Emperor" }, { "paragraph_id": 47, "text": "The facts and circumstances of Caligula's reign are mostly lost to history. Two major literary sources contemporary with Caligula have survived – the works of Philo and Seneca the Younger. Philo's works, On the Embassy to Gaius and Flaccus, give some details on Caligula's early reign, but mostly focus on events surrounding the Jewish population in Judea and Egypt with whom he sympathizes. Seneca's various works give mostly scattered anecdotes on Caligula's personality. Seneca was almost put to death by Caligula in AD 39, probably due to his associations with conspirators. At one time, there were detailed contemporaneous histories on Caligula, but they are now lost. Tacitus describes them as biased, either overly critical or praising Caligula. Nonetheless, these lost primary sources, along with the works of Seneca and Philo, were the basis of subsequent histories. Fabius Rusticus and Cluvius Rufus both wrote histories condemning Caligula. They are now lost, but Tacitus describes Fabius Rusticus as a friend of Seneca, and prone to embellishments and misrepresentations. Cluvius Rufus was a senator involved in Caligula's assassination.", "title": "Legacy" }, { "paragraph_id": 48, "text": "Caligula's sister, Agrippina the Younger, wrote an autobiography that included a detailed account of Caligula's reign, but it too is lost. Agrippina was banished by Caligula for her connection to Marcus Lepidus, who conspired against him. The inheritance of Nero, Agrippina's son and the future emperor, was seized by Caligula. Gaetulicus, a poet, produced a number of flattering writings about Caligula, but they are lost. Suetonius wrote his biography of Caligula 80 years after his assassination, and Cassius Dio over 180 years after. Dio's work offers a loose chronology. Josephus gives a detailed description of Caligula's assassination. Tacitus provides some information on Caligula's life under Tiberius. In a now lost portion of his Annals, Tacitus gave a detailed history of Caligula. Pliny the Elder's Natural History has a few brief references to Caligula. None of the few surviving sources paints Caligula in a favourable light. The paucity of sources has resulted in significant gaps in modern knowledge of the reign of Caligula. Little is written on the first two years of Caligula's reign, and there are only limited details on later significant events, such as the annexation of Mauretania, Caligula's military actions in Britannia, and his feud with the Roman Senate, whose class provides, almost without exception, the most blatantly hostile accounts of Caligula the man, his reign and his various infamies.", "title": "Legacy" }, { "paragraph_id": 49, "text": "Several contemporary and near-contemporary Roman sources describe Caligula as insane. It is notoriously difficult to distinguish fact from fiction among the many allegations of his aberrant behaviour as emperor. Several modern sources suggest various possible medical explanations, including encephalitis, epilepsy or meningitis, acquired during the illness early in his reign. Philo, Josephus and Seneca see Caligula's \"insanity\" as a personality trait acquired through self-indulgence and the unlimited exercise of power. Seneca states that Caligula became arrogant, angry and insulting once he became emperor. According to Josephus, the power Caligula was able to exercise led him to think himself a living God. Philo claims that Caligula became ruthless after nearly dying of an illness in the eighth month of his reign (in 37).", "title": "Legacy" }, { "paragraph_id": 50, "text": "Suetonius said that Caligula had \"falling sickness\", or epilepsy, when he was young. He may have lived in daily fear of seizures. In Romano-Greek medical theory, the most severe epilepsy attacks were associated with the full moon and the moon goddess Selene, with whom Caligula was claimed to converse and to enjoy sexual congress.", "title": "Legacy" }, { "paragraph_id": 51, "text": "Suetonius described Caligula as the following: \"He was very tall and extremely pale, with an unshapely body, but very thin neck and legs. His eyes and temples were hollow, his forehead broad and grim, his hair thin and entirely gone on the top of his head, though his body was hairy... He was sound neither of body nor mind. As a boy he was troubled with the falling sickness, and while in his youth he had some endurance, yet at times because of sudden faintness he was hardly able to walk, to stand up, to collect his thoughts, or to hold up his head\". Based on scientific reconstructions of his official painted busts, Caligula had brown hair, brown eyes, and fair skin. Some modern historians think that Caligula had hyperthyroidism. This diagnosis is mainly attributed to Caligula's irritability and his \"stare\" as described by Pliny the Elder.", "title": "Legacy" } ]	Gaius Caesar Augustus Germanicus, better known by his nickname Caligula, was Roman emperor from AD 37 until his assassination in AD 41. He was the son of the Roman general Germanicus and Agrippina the Elder, Augustus' granddaughter. Caligula was born into the first ruling family of the Roman Empire, conventionally known as the Julio-Claudian dynasty. Although Gaius was named after Gaius Julius Caesar, he acquired the nickname "Caligula", the diminutive form of caliga, a military boot, from his father's soldiers during their campaign in Germania. When Germanicus died at Antioch in 19, Agrippina returned with her six children to Rome, where she became entangled in a bitter feud with the emperor Tiberius. The conflict eventually led to the destruction of her family, with Caligula as the sole male survivor. In 26, Tiberius withdrew from public life to the island of Capri, and in 31, Caligula joined him there. Following the former's death in 37, Caligula succeeded him as emperor, at the age of 24. There are few surviving sources about Caligula and his four-year reign. He is described as a noble and moderate emperor during the first six months of his rule, but after this, the sources focus upon his cruelty, sadism, extravagance, and sexual perversion, presenting him as an insane tyrant who demanded and received worship as a living god. The reliability of these sources is questionable; most modern commentaries seek to explain Caligula's position, personality and historical context. Many of the lurid, outrageous allegations against him have received close scrutiny in modern histories and are dismissed as misunderstandings, exaggeration, propaganda or malicious fantasy. During his brief reign, Caligula worked to increase the unconstrained personal power of the emperor, as opposed to countervailing powers within the principate. He directed much of his attention to ambitious construction projects and luxurious dwellings for himself. He began the construction of two aqueducts in Rome: the Aqua Claudia and the Anio Novus. During his reign, the empire annexed the client kingdom of Mauretania as a province. In early 41, Caligula was assassinated as a result of a conspiracy by officers of the Praetorian Guard, senators, and courtiers. At least some of the conspirators might have planned this as an opportunity to restore the Roman Republic and aristocratic privileges; but if so, their plan was thwarted by the Praetorians, who seem to have spontaneously chosen Caligula's uncle Claudius as the next emperor. Caligula's death marked the official end of the Julii Caesares in the male line, though the Julio-Claudian dynasty continued to rule until the demise of Caligula's nephew, Nero.	2001-10-31T17:08:43Z	2023-12-31T17:40:11Z	[ "Template:Short description", "Template:See also", "Template:Cite web", "Template:Roman emperors", "Template:Infobox royalty", "Template:Lang", "Template:Legend", "Template:Citation needed", "Template:Refn", "Template:S-ttl", "Template:S-off", "Template:Use dmy dates", "Template:Smallcaps", "Template:Clarify", "Template:IMDb title", "Template:Refbegin", "Template:Refend", "Template:Authority control", "Template:Other uses", "Template:Sfn", "Template:Efn", "Template:Citation", "Template:S-hou", "Template:S-bef", "Template:Cite journal", "Template:ISBN", "Template:S-start", "Template:IPAc-en", "Template:Multiple image", "Template:Transliteration", "Template:Commons category", "Template:Wikiquote", "Template:EB1911 poster", "Template:Reflist", "Template:Cite book", "Template:Cite news", "Template:Webarchive", "Template:S-aft", "Template:S-end" ]	https://en.wikipedia.org/wiki/Caligula
6,854	Church–Turing thesis	In computability theory, the Church–Turing thesis (also known as computability thesis, the Turing–Church thesis, the Church–Turing conjecture, Church's thesis, Church's conjecture, and Turing's thesis) is a thesis about the nature of computable functions. It states that a function on the natural numbers can be calculated by an effective method if and only if it is computable by a Turing machine. The thesis is named after American mathematician Alonzo Church and the British mathematician Alan Turing. Before the precise definition of computable function, mathematicians often used the informal term effectively calculable to describe functions that are computable by paper-and-pencil methods. In the 1930s, several independent attempts were made to formalize the notion of computability: Church, Kleene, and Turing proved that these three formally defined classes of computable functions coincide: a function is λ-computable if and only if it is Turing computable, and if and only if it is general recursive. This has led mathematicians and computer scientists to believe that the concept of computability is accurately characterized by these three equivalent processes. Other formal attempts to characterize computability have subsequently strengthened this belief (see below). On the other hand, the Church–Turing thesis states that the above three formally-defined classes of computable functions coincide with the informal notion of an effectively calculable function. Although the thesis has near-universal acceptance, it cannot be formally proven, as the concept of effective calculability is only informally defined. Since its inception, variations on the original thesis have arisen, including statements about what can physically be realized by a computer in our universe (physical Church-Turing thesis) and what can be efficiently computed (Church–Turing thesis (complexity theory)). These variations are not due to Church or Turing, but arise from later work in complexity theory and digital physics. The thesis also has implications for the philosophy of mind (see below). J. B. Rosser (1939) addresses the notion of "effective computability" as follows: "Clearly the existence of CC and RC (Church's and Rosser's proofs) presupposes a precise definition of 'effective'. 'Effective method' is here used in the rather special sense of a method each step of which is precisely predetermined and which is certain to produce the answer in a finite number of steps". Thus the adverb-adjective "effective" is used in a sense of "1a: producing a decided, decisive, or desired effect", and "capable of producing a result". In the following, the words "effectively calculable" will mean "produced by any intuitively 'effective' means whatsoever" and "effectively computable" will mean "produced by a Turing-machine or equivalent mechanical device". Turing's "definitions" given in a footnote in his 1938 Ph.D. thesis Systems of Logic Based on Ordinals, supervised by Church, are virtually the same: We shall use the expression "computable function" to mean a function calculable by a machine, and let "effectively calculable" refer to the intuitive idea without particular identification with any one of these definitions. The thesis can be stated as: Every effectively calculable function is a computable function. Church also stated that "No computational procedure will be considered as an algorithm unless it can be represented as a Turing Machine". Turing stated it this way: It was stated ... that "a function is effectively calculable if its values can be found by some purely mechanical process". We may take this literally, understanding that by a purely mechanical process one which could be carried out by a machine. The development ... leads to ... an identification of computability with effective calculability. [ is the footnote quoted above.] One of the important problems for logicians in the 1930s was the Entscheidungsproblem of David Hilbert and Wilhelm Ackermann, which asked whether there was a mechanical procedure for separating mathematical truths from mathematical falsehoods. This quest required that the notion of "algorithm" or "effective calculability" be pinned down, at least well enough for the quest to begin. But from the very outset Alonzo Church's attempts began with a debate that continues to this day. Was the notion of "effective calculability" to be (i) an "axiom or axioms" in an axiomatic system, (ii) merely a definition that "identified" two or more propositions, (iii) an empirical hypothesis to be verified by observation of natural events, or (iv) just a proposal for the sake of argument (i.e. a "thesis"). In the course of studying the problem, Church and his student Stephen Kleene introduced the notion of λ-definable functions, and they were able to prove that several large classes of functions frequently encountered in number theory were λ-definable. The debate began when Church proposed to Gödel that one should define the "effectively computable" functions as the λ-definable functions. Gödel, however, was not convinced and called the proposal "thoroughly unsatisfactory". Rather, in correspondence with Church (c. 1934–1935), Gödel proposed axiomatizing the notion of "effective calculability"; indeed, in a 1935 letter to Kleene, Church reported that: His [Gödel's] only idea at the time was that it might be possible, in terms of effective calculability as an undefined notion, to state a set of axioms which would embody the generally accepted properties of this notion, and to do something on that basis. But Gödel offered no further guidance. Eventually, he would suggest his recursion, modified by Herbrand's suggestion, that Gödel had detailed in his 1934 lectures in Princeton NJ (Kleene and Rosser transcribed the notes). But he did not think that the two ideas could be satisfactorily identified "except heuristically". Next, it was necessary to identify and prove the equivalence of two notions of effective calculability. Equipped with the λ-calculus and "general" recursion, Kleene with help of Church and J. Barkley Rosser produced proofs (1933, 1935) to show that the two calculi are equivalent. Church subsequently modified his methods to include use of Herbrand–Gödel recursion and then proved (1936) that the Entscheidungsproblem is unsolvable: there is no algorithm that can determine whether a well formed formula has a beta normal form. Many years later in a letter to Davis (c. 1965), Gödel said that "he was, at the time of these [1934] lectures, not at all convinced that his concept of recursion comprised all possible recursions". By 1963–1964 Gödel would disavow Herbrand–Gödel recursion and the λ-calculus in favor of the Turing machine as the definition of "algorithm" or "mechanical procedure" or "formal system". A hypothesis leading to a natural law?: In late 1936 Alan Turing's paper (also proving that the Entscheidungsproblem is unsolvable) was delivered orally, but had not yet appeared in print. On the other hand, Emil Post's 1936 paper had appeared and was certified independent of Turing's work. Post strongly disagreed with Church's "identification" of effective computability with the λ-calculus and recursion, stating: Actually the work already done by Church and others carries this identification considerably beyond the working hypothesis stage. But to mask this identification under a definition… blinds us to the need of its continual verification. Rather, he regarded the notion of "effective calculability" as merely a "working hypothesis" that might lead by inductive reasoning to a "natural law" rather than by "a definition or an axiom". This idea was "sharply" criticized by Church. Thus Post in his 1936 paper was also discounting Kurt Gödel's suggestion to Church in 1934–1935 that the thesis might be expressed as an axiom or set of axioms. Turing adds another definition, Rosser equates all three: Within just a short time, Turing's 1936–1937 paper "On Computable Numbers, with an Application to the Entscheidungsproblem" appeared. In it he stated another notion of "effective computability" with the introduction of his a-machines (now known as the Turing machine abstract computational model). And in a proof-sketch added as an "Appendix" to his 1936–1937 paper, Turing showed that the classes of functions defined by λ-calculus and Turing machines coincided. Church was quick to recognise how compelling Turing's analysis was. In his review of Turing's paper he made clear that Turing's notion made "the identification with effectiveness in the ordinary (not explicitly defined) sense evident immediately". In a few years (1939) Turing would propose, like Church and Kleene before him, that his formal definition of mechanical computing agent was the correct one. Thus, by 1939, both Church (1934) and Turing (1939) had individually proposed that their "formal systems" should be definitions of "effective calculability"; neither framed their statements as theses. Rosser (1939) formally identified the three notions-as-definitions: All three definitions are equivalent, so it does not matter which one is used. Kleene proposes Thesis I: This left the overt expression of a "thesis" to Kleene. In 1943 Kleene proposed his "Thesis I": This heuristic fact [general recursive functions are effectively calculable] ... led Church to state the following thesis. The same thesis is implicit in Turing's description of computing machines. Since a precise mathematical definition of the term effectively calculable (effectively decidable) has been wanting, we can take this thesis ... as a definition of it ... ...the thesis has the character of an hypothesis—a point emphasized by Post and by Church. If we consider the thesis and its converse as definition, then the hypothesis is an hypothesis about the application of the mathematical theory developed from the definition. For the acceptance of the hypothesis, there are, as we have suggested, quite compelling grounds. The Church–Turing Thesis: Stephen Kleene, in Introduction To Metamathematics, finally goes on to formally name "Church's Thesis" and "Turing's Thesis", using his theory of recursive realizability. Kleene having switched from presenting his work in the terminology of Church-Kleene lambda definability, to that of Gödel-Kleene recursiveness (partial recursive functions). In this transition, Kleene modified Gödel's general recursive functions to allow for proofs of the unsolvability of problems in the Intuitionism of E. J. Brouwer. In his graduate textbook on logic, "Church's thesis" is introduced and basic mathematical results are demonstrated to be unrealizable. Next, Kleene proceeds to present "Turing's thesis", where results are shown to be uncomputable, using his simplified derivation of a Turing machine based on the work of Emil Post. Both theses are proven equivalent by use of "Theorem XXX". Thesis I. Every effectively calculable function (effectively decidable predicate) is general recursive. Theorem XXX: The following classes of partial functions are coextensive, i.e. have the same members: (a) the partial recursive functions, (b) the computable functions ... Turing's thesis: Turing's thesis that every function which would naturally be regarded as computable is computable under his definition, i.e. by one of his machines, is equivalent to Church's thesis by Theorem XXX. Kleene, finally, uses for the first time the term the "Church-Turing thesis" in a section in which he helps to give clarifications to concepts in Alan Turing's paper "The Word Problem in Semi-Groups with Cancellation", as demanded in a critique from William Boone. An attempt to understand the notion of "effective computability" better led Robin Gandy (Turing's student and friend) in 1980 to analyze machine computation (as opposed to human-computation acted out by a Turing machine). Gandy's curiosity about, and analysis of, cellular automata (including Conway's game of life), parallelism, and crystalline automata, led him to propose four "principles (or constraints) ... which it is argued, any machine must satisfy". His most-important fourth, "the principle of causality" is based on the "finite velocity of propagation of effects and signals; contemporary physics rejects the possibility of instantaneous action at a distance". From these principles and some additional constraints—(1a) a lower bound on the linear dimensions of any of the parts, (1b) an upper bound on speed of propagation (the velocity of light), (2) discrete progress of the machine, and (3) deterministic behavior—he produces a theorem that "What can be calculated by a device satisfying principles I–IV is computable." In the late 1990s Wilfried Sieg analyzed Turing's and Gandy's notions of "effective calculability" with the intent of "sharpening the informal notion, formulating its general features axiomatically, and investigating the axiomatic framework". In his 1997 and 2002 work Sieg presents a series of constraints on the behavior of a computor—"a human computing agent who proceeds mechanically". These constraints reduce to: The matter remains in active discussion within the academic community. The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. "the correct definition of mechanical computability was established beyond any doubt by Turing". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function. Other formalisms (besides recursion, the λ-calculus, and the Turing machine) have been proposed for describing effective calculability/computability. Kleene (1952) adds to the list the functions "reckonable in the system S1" of Kurt Gödel 1936, and Emil Post's (1943, 1946) "canonical [also called normal] systems". In the 1950s Hao Wang and Martin Davis greatly simplified the one-tape Turing-machine model (see Post–Turing machine). Marvin Minsky expanded the model to two or more tapes and greatly simplified the tapes into "up-down counters", which Melzak and Lambek further evolved into what is now known as the counter machine model. In the late 1960s and early 1970s researchers expanded the counter machine model into the register machine, a close cousin to the modern notion of the computer. Other models include combinatory logic and Markov algorithms. Gurevich adds the pointer machine model of Kolmogorov and Uspensky (1953, 1958): "... they just wanted to ... convince themselves that there is no way to extend the notion of computable function." All these contributions involve proofs that the models are computationally equivalent to the Turing machine; such models are said to be Turing complete. Because all these different attempts at formalizing the concept of "effective calculability/computability" have yielded equivalent results, it is now generally assumed that the Church–Turing thesis is correct. In fact, Gödel (1936) proposed something stronger than this; he observed that there was something "absolute" about the concept of "reckonable in S1": It may also be shown that a function which is computable ['reckonable'] in one of the systems Si, or even in a system of transfinite type, is already computable [reckonable] in S1. Thus the concept 'computable' ['reckonable'] is in a certain definite sense 'absolute', while practically all other familiar metamathematical concepts (e.g. provable, definable, etc.) depend quite essentially on the system to which they are defined ... Proofs in computability theory often invoke the Church–Turing thesis in an informal way to establish the computability of functions while avoiding the (often very long) details which would be involved in a rigorous, formal proof. To establish that a function is computable by Turing machine, it is usually considered sufficient to give an informal English description of how the function can be effectively computed, and then conclude "by the Church–Turing thesis" that the function is Turing computable (equivalently, partial recursive). Dirk van Dalen gives the following example for the sake of illustrating this informal use of the Church–Turing thesis: Example: Each infinite RE set contains an infinite recursive set. Proof: Let A be infinite RE. We list the elements of A effectively, n0, n1, n2, n3, ... From this list we extract an increasing sublist: put m0 = n0, after finitely many steps we find an nk such that nk > m0, put m1 = nk. We repeat this procedure to find m2 > m1, etc. this yields an effective listing of the subset B={m0, m1, m2,...} of A, with the property mi < mi+1. Claim. B is decidable. For, in order to test k in B we must check if k = mi for some i. Since the sequence of mi's is increasing we have to produce at most k+1 elements of the list and compare them with k. If none of them is equal to k, then k not in B. Since this test is effective, B is decidable and, by Church's thesis, recursive. In order to make the above example completely rigorous, one would have to carefully construct a Turing machine, or λ-function, or carefully invoke recursion axioms, or at best, cleverly invoke various theorems of computability theory. But because the computability theorist believes that Turing computability correctly captures what can be computed effectively, and because an effective procedure is spelled out in English for deciding the set B, the computability theorist accepts this as proof that the set is indeed recursive. The success of the Church–Turing thesis prompted variations of the thesis to be proposed. For example, the physical Church–Turing thesis states: "All physically computable functions are Turing-computable." The Church–Turing thesis says nothing about the efficiency with which one model of computation can simulate another. It has been proved for instance that a (multi-tape) universal Turing machine only suffers a logarithmic slowdown factor in simulating any Turing machine. A variation of the Church–Turing thesis addresses whether an arbitrary but "reasonable" model of computation can be efficiently simulated. This is called the feasibility thesis, also known as the (classical) complexity-theoretic Church–Turing thesis or the extended Church–Turing thesis, which is not due to Church or Turing, but rather was realized gradually in the development of complexity theory. It states: "A probabilistic Turing machine can efficiently simulate any realistic model of computation." The word 'efficiently' here means up to polynomial-time reductions. This thesis was originally called computational complexity-theoretic Church–Turing thesis by Ethan Bernstein and Umesh Vazirani (1997). The complexity-theoretic Church–Turing thesis, then, posits that all 'reasonable' models of computation yield the same class of problems that can be computed in polynomial time. Assuming the conjecture that probabilistic polynomial time (BPP) equals deterministic polynomial time (P), the word 'probabilistic' is optional in the complexity-theoretic Church–Turing thesis. A similar thesis, called the invariance thesis, was introduced by Cees F. Slot and Peter van Emde Boas. It states: "'Reasonable' machines can simulate each other within a polynomially bounded overhead in time and a constant-factor overhead in space." The thesis originally appeared in a paper at STOC'84, which was the first paper to show that polynomial-time overhead and constant-space overhead could be simultaneously achieved for a simulation of a Random Access Machine on a Turing machine. If BQP is shown to be a strict superset of BPP, it would invalidate the complexity-theoretic Church–Turing thesis. In other words, there would be efficient quantum algorithms that perform tasks that do not have efficient probabilistic algorithms. This would not however invalidate the original Church–Turing thesis, since a quantum computer can always be simulated by a Turing machine, but it would invalidate the classical complexity-theoretic Church–Turing thesis for efficiency reasons. Consequently, the quantum complexity-theoretic Church–Turing thesis states: "A quantum Turing machine can efficiently simulate any realistic model of computation." Eugene Eberbach and Peter Wegner claim that the Church–Turing thesis is sometimes interpreted too broadly, stating "Though [...] Turing machines express the behavior of algorithms, the broader assertion that algorithms precisely capture what can be computed is invalid". They claim that forms of computation not captured by the thesis are relevant today, terms which they call super-Turing computation. Philosophers have interpreted the Church–Turing thesis as having implications for the philosophy of mind. B. Jack Copeland states that it is an open empirical question whether there are actual deterministic physical processes that, in the long run, elude simulation by a Turing machine; furthermore, he states that it is an open empirical question whether any such processes are involved in the working of the human brain. There are also some important open questions which cover the relationship between the Church–Turing thesis and physics, and the possibility of hypercomputation. When applied to physics, the thesis has several possible meanings: There are many other technical possibilities which fall outside or between these three categories, but these serve to illustrate the range of the concept. Philosophical aspects of the thesis, regarding both physical and biological computers, are also discussed in Odifreddi's 1989 textbook on recursion theory. One can formally define functions that are not computable. A well-known example of such a function is the Busy Beaver function. This function takes an input n and returns the largest number of symbols that a Turing machine with n states can print before halting, when run with no input. Finding an upper bound on the busy beaver function is equivalent to solving the halting problem, a problem known to be unsolvable by Turing machines. Since the busy beaver function cannot be computed by Turing machines, the Church–Turing thesis states that this function cannot be effectively computed by any method. Several computational models allow for the computation of (Church-Turing) non-computable functions. These are known as hypercomputers. Mark Burgin argues that super-recursive algorithms such as inductive Turing machines disprove the Church–Turing thesis. His argument relies on a definition of algorithm broader than the ordinary one, so that non-computable functions obtained from some inductive Turing machines are called computable. This interpretation of the Church–Turing thesis differs from the interpretation commonly accepted in computability theory, discussed above. The argument that super-recursive algorithms are indeed algorithms in the sense of the Church–Turing thesis has not found broad acceptance within the computability research community.	[ { "paragraph_id": 0, "text": "In computability theory, the Church–Turing thesis (also known as computability thesis, the Turing–Church thesis, the Church–Turing conjecture, Church's thesis, Church's conjecture, and Turing's thesis) is a thesis about the nature of computable functions. It states that a function on the natural numbers can be calculated by an effective method if and only if it is computable by a Turing machine. The thesis is named after American mathematician Alonzo Church and the British mathematician Alan Turing. Before the precise definition of computable function, mathematicians often used the informal term effectively calculable to describe functions that are computable by paper-and-pencil methods. In the 1930s, several independent attempts were made to formalize the notion of computability:", "title": "" }, { "paragraph_id": 1, "text": "Church, Kleene, and Turing proved that these three formally defined classes of computable functions coincide: a function is λ-computable if and only if it is Turing computable, and if and only if it is general recursive. This has led mathematicians and computer scientists to believe that the concept of computability is accurately characterized by these three equivalent processes. Other formal attempts to characterize computability have subsequently strengthened this belief (see below).", "title": "" }, { "paragraph_id": 2, "text": "On the other hand, the Church–Turing thesis states that the above three formally-defined classes of computable functions coincide with the informal notion of an effectively calculable function. Although the thesis has near-universal acceptance, it cannot be formally proven, as the concept of effective calculability is only informally defined.", "title": "" }, { "paragraph_id": 3, "text": "Since its inception, variations on the original thesis have arisen, including statements about what can physically be realized by a computer in our universe (physical Church-Turing thesis) and what can be efficiently computed (Church–Turing thesis (complexity theory)). These variations are not due to Church or Turing, but arise from later work in complexity theory and digital physics. The thesis also has implications for the philosophy of mind (see below).", "title": "" }, { "paragraph_id": 4, "text": "J. B. Rosser (1939) addresses the notion of \"effective computability\" as follows: \"Clearly the existence of CC and RC (Church's and Rosser's proofs) presupposes a precise definition of 'effective'. 'Effective method' is here used in the rather special sense of a method each step of which is precisely predetermined and which is certain to produce the answer in a finite number of steps\". Thus the adverb-adjective \"effective\" is used in a sense of \"1a: producing a decided, decisive, or desired effect\", and \"capable of producing a result\".", "title": "Statement in Church's and Turing's words" }, { "paragraph_id": 5, "text": "In the following, the words \"effectively calculable\" will mean \"produced by any intuitively 'effective' means whatsoever\" and \"effectively computable\" will mean \"produced by a Turing-machine or equivalent mechanical device\". Turing's \"definitions\" given in a footnote in his 1938 Ph.D. thesis Systems of Logic Based on Ordinals, supervised by Church, are virtually the same:", "title": "Statement in Church's and Turing's words" }, { "paragraph_id": 6, "text": "We shall use the expression \"computable function\" to mean a function calculable by a machine, and let \"effectively calculable\" refer to the intuitive idea without particular identification with any one of these definitions.", "title": "Statement in Church's and Turing's words" }, { "paragraph_id": 7, "text": "The thesis can be stated as: Every effectively calculable function is a computable function. Church also stated that \"No computational procedure will be considered as an algorithm unless it can be represented as a Turing Machine\". Turing stated it this way:", "title": "Statement in Church's and Turing's words" }, { "paragraph_id": 8, "text": "It was stated ... that \"a function is effectively calculable if its values can be found by some purely mechanical process\". We may take this literally, understanding that by a purely mechanical process one which could be carried out by a machine. The development ... leads to ... an identification of computability with effective calculability. [ is the footnote quoted above.]", "title": "Statement in Church's and Turing's words" }, { "paragraph_id": 9, "text": "One of the important problems for logicians in the 1930s was the Entscheidungsproblem of David Hilbert and Wilhelm Ackermann, which asked whether there was a mechanical procedure for separating mathematical truths from mathematical falsehoods. This quest required that the notion of \"algorithm\" or \"effective calculability\" be pinned down, at least well enough for the quest to begin. But from the very outset Alonzo Church's attempts began with a debate that continues to this day. Was the notion of \"effective calculability\" to be (i) an \"axiom or axioms\" in an axiomatic system, (ii) merely a definition that \"identified\" two or more propositions, (iii) an empirical hypothesis to be verified by observation of natural events, or (iv) just a proposal for the sake of argument (i.e. a \"thesis\").", "title": "History" }, { "paragraph_id": 10, "text": "In the course of studying the problem, Church and his student Stephen Kleene introduced the notion of λ-definable functions, and they were able to prove that several large classes of functions frequently encountered in number theory were λ-definable. The debate began when Church proposed to Gödel that one should define the \"effectively computable\" functions as the λ-definable functions. Gödel, however, was not convinced and called the proposal \"thoroughly unsatisfactory\". Rather, in correspondence with Church (c. 1934–1935), Gödel proposed axiomatizing the notion of \"effective calculability\"; indeed, in a 1935 letter to Kleene, Church reported that:", "title": "History" }, { "paragraph_id": 11, "text": "His [Gödel's] only idea at the time was that it might be possible, in terms of effective calculability as an undefined notion, to state a set of axioms which would embody the generally accepted properties of this notion, and to do something on that basis.", "title": "History" }, { "paragraph_id": 12, "text": "But Gödel offered no further guidance. Eventually, he would suggest his recursion, modified by Herbrand's suggestion, that Gödel had detailed in his 1934 lectures in Princeton NJ (Kleene and Rosser transcribed the notes). But he did not think that the two ideas could be satisfactorily identified \"except heuristically\".", "title": "History" }, { "paragraph_id": 13, "text": "Next, it was necessary to identify and prove the equivalence of two notions of effective calculability. Equipped with the λ-calculus and \"general\" recursion, Kleene with help of Church and J. Barkley Rosser produced proofs (1933, 1935) to show that the two calculi are equivalent. Church subsequently modified his methods to include use of Herbrand–Gödel recursion and then proved (1936) that the Entscheidungsproblem is unsolvable: there is no algorithm that can determine whether a well formed formula has a beta normal form.", "title": "History" }, { "paragraph_id": 14, "text": "Many years later in a letter to Davis (c. 1965), Gödel said that \"he was, at the time of these [1934] lectures, not at all convinced that his concept of recursion comprised all possible recursions\". By 1963–1964 Gödel would disavow Herbrand–Gödel recursion and the λ-calculus in favor of the Turing machine as the definition of \"algorithm\" or \"mechanical procedure\" or \"formal system\".", "title": "History" }, { "paragraph_id": 15, "text": "A hypothesis leading to a natural law?: In late 1936 Alan Turing's paper (also proving that the Entscheidungsproblem is unsolvable) was delivered orally, but had not yet appeared in print. On the other hand, Emil Post's 1936 paper had appeared and was certified independent of Turing's work. Post strongly disagreed with Church's \"identification\" of effective computability with the λ-calculus and recursion, stating:", "title": "History" }, { "paragraph_id": 16, "text": "Actually the work already done by Church and others carries this identification considerably beyond the working hypothesis stage. But to mask this identification under a definition… blinds us to the need of its continual verification.", "title": "History" }, { "paragraph_id": 17, "text": "Rather, he regarded the notion of \"effective calculability\" as merely a \"working hypothesis\" that might lead by inductive reasoning to a \"natural law\" rather than by \"a definition or an axiom\". This idea was \"sharply\" criticized by Church.", "title": "History" }, { "paragraph_id": 18, "text": "Thus Post in his 1936 paper was also discounting Kurt Gödel's suggestion to Church in 1934–1935 that the thesis might be expressed as an axiom or set of axioms.", "title": "History" }, { "paragraph_id": 19, "text": "Turing adds another definition, Rosser equates all three: Within just a short time, Turing's 1936–1937 paper \"On Computable Numbers, with an Application to the Entscheidungsproblem\" appeared. In it he stated another notion of \"effective computability\" with the introduction of his a-machines (now known as the Turing machine abstract computational model). And in a proof-sketch added as an \"Appendix\" to his 1936–1937 paper, Turing showed that the classes of functions defined by λ-calculus and Turing machines coincided. Church was quick to recognise how compelling Turing's analysis was. In his review of Turing's paper he made clear that Turing's notion made \"the identification with effectiveness in the ordinary (not explicitly defined) sense evident immediately\".", "title": "History" }, { "paragraph_id": 20, "text": "In a few years (1939) Turing would propose, like Church and Kleene before him, that his formal definition of mechanical computing agent was the correct one. Thus, by 1939, both Church (1934) and Turing (1939) had individually proposed that their \"formal systems\" should be definitions of \"effective calculability\"; neither framed their statements as theses.", "title": "History" }, { "paragraph_id": 21, "text": "Rosser (1939) formally identified the three notions-as-definitions:", "title": "History" }, { "paragraph_id": 22, "text": "All three definitions are equivalent, so it does not matter which one is used.", "title": "History" }, { "paragraph_id": 23, "text": "Kleene proposes Thesis I: This left the overt expression of a \"thesis\" to Kleene. In 1943 Kleene proposed his \"Thesis I\":", "title": "History" }, { "paragraph_id": 24, "text": "This heuristic fact [general recursive functions are effectively calculable] ... led Church to state the following thesis. The same thesis is implicit in Turing's description of computing machines.", "title": "History" }, { "paragraph_id": 25, "text": "Since a precise mathematical definition of the term effectively calculable (effectively decidable) has been wanting, we can take this thesis ... as a definition of it ...", "title": "History" }, { "paragraph_id": 26, "text": "...the thesis has the character of an hypothesis—a point emphasized by Post and by Church. If we consider the thesis and its converse as definition, then the hypothesis is an hypothesis about the application of the mathematical theory developed from the definition. For the acceptance of the hypothesis, there are, as we have suggested, quite compelling grounds.", "title": "History" }, { "paragraph_id": 27, "text": "The Church–Turing Thesis: Stephen Kleene, in Introduction To Metamathematics, finally goes on to formally name \"Church's Thesis\" and \"Turing's Thesis\", using his theory of recursive realizability. Kleene having switched from presenting his work in the terminology of Church-Kleene lambda definability, to that of Gödel-Kleene recursiveness (partial recursive functions). In this transition, Kleene modified Gödel's general recursive functions to allow for proofs of the unsolvability of problems in the Intuitionism of E. J. Brouwer. In his graduate textbook on logic, \"Church's thesis\" is introduced and basic mathematical results are demonstrated to be unrealizable. Next, Kleene proceeds to present \"Turing's thesis\", where results are shown to be uncomputable, using his simplified derivation of a Turing machine based on the work of Emil Post. Both theses are proven equivalent by use of \"Theorem XXX\".", "title": "History" }, { "paragraph_id": 28, "text": "Thesis I. Every effectively calculable function (effectively decidable predicate) is general recursive.", "title": "History" }, { "paragraph_id": 29, "text": "Theorem XXX: The following classes of partial functions are coextensive, i.e. have the same members: (a) the partial recursive functions, (b) the computable functions ...", "title": "History" }, { "paragraph_id": 30, "text": "Turing's thesis: Turing's thesis that every function which would naturally be regarded as computable is computable under his definition, i.e. by one of his machines, is equivalent to Church's thesis by Theorem XXX.", "title": "History" }, { "paragraph_id": 31, "text": "Kleene, finally, uses for the first time the term the \"Church-Turing thesis\" in a section in which he helps to give clarifications to concepts in Alan Turing's paper \"The Word Problem in Semi-Groups with Cancellation\", as demanded in a critique from William Boone.", "title": "History" }, { "paragraph_id": 32, "text": "An attempt to understand the notion of \"effective computability\" better led Robin Gandy (Turing's student and friend) in 1980 to analyze machine computation (as opposed to human-computation acted out by a Turing machine). Gandy's curiosity about, and analysis of, cellular automata (including Conway's game of life), parallelism, and crystalline automata, led him to propose four \"principles (or constraints) ... which it is argued, any machine must satisfy\". His most-important fourth, \"the principle of causality\" is based on the \"finite velocity of propagation of effects and signals; contemporary physics rejects the possibility of instantaneous action at a distance\". From these principles and some additional constraints—(1a) a lower bound on the linear dimensions of any of the parts, (1b) an upper bound on speed of propagation (the velocity of light), (2) discrete progress of the machine, and (3) deterministic behavior—he produces a theorem that \"What can be calculated by a device satisfying principles I–IV is computable.\"", "title": "History" }, { "paragraph_id": 33, "text": "In the late 1990s Wilfried Sieg analyzed Turing's and Gandy's notions of \"effective calculability\" with the intent of \"sharpening the informal notion, formulating its general features axiomatically, and investigating the axiomatic framework\". In his 1997 and 2002 work Sieg presents a series of constraints on the behavior of a computor—\"a human computing agent who proceeds mechanically\". These constraints reduce to:", "title": "History" }, { "paragraph_id": 34, "text": "The matter remains in active discussion within the academic community.", "title": "History" }, { "paragraph_id": 35, "text": "The thesis can be viewed as nothing but an ordinary mathematical definition. Comments by Gödel on the subject suggest this view, e.g. \"the correct definition of mechanical computability was established beyond any doubt by Turing\". The case for viewing the thesis as nothing more than a definition is made explicitly by Robert I. Soare, where it is also argued that Turing's definition of computability is no less likely to be correct than the epsilon-delta definition of a continuous function.", "title": "History" }, { "paragraph_id": 36, "text": "Other formalisms (besides recursion, the λ-calculus, and the Turing machine) have been proposed for describing effective calculability/computability. Kleene (1952) adds to the list the functions \"reckonable in the system S1\" of Kurt Gödel 1936, and Emil Post's (1943, 1946) \"canonical [also called normal] systems\". In the 1950s Hao Wang and Martin Davis greatly simplified the one-tape Turing-machine model (see Post–Turing machine). Marvin Minsky expanded the model to two or more tapes and greatly simplified the tapes into \"up-down counters\", which Melzak and Lambek further evolved into what is now known as the counter machine model. In the late 1960s and early 1970s researchers expanded the counter machine model into the register machine, a close cousin to the modern notion of the computer. Other models include combinatory logic and Markov algorithms. Gurevich adds the pointer machine model of Kolmogorov and Uspensky (1953, 1958): \"... they just wanted to ... convince themselves that there is no way to extend the notion of computable function.\"", "title": "Success of the thesis" }, { "paragraph_id": 37, "text": "All these contributions involve proofs that the models are computationally equivalent to the Turing machine; such models are said to be Turing complete. Because all these different attempts at formalizing the concept of \"effective calculability/computability\" have yielded equivalent results, it is now generally assumed that the Church–Turing thesis is correct. In fact, Gödel (1936) proposed something stronger than this; he observed that there was something \"absolute\" about the concept of \"reckonable in S1\":", "title": "Success of the thesis" }, { "paragraph_id": 38, "text": "It may also be shown that a function which is computable ['reckonable'] in one of the systems Si, or even in a system of transfinite type, is already computable [reckonable] in S1. Thus the concept 'computable' ['reckonable'] is in a certain definite sense 'absolute', while practically all other familiar metamathematical concepts (e.g. provable, definable, etc.) depend quite essentially on the system to which they are defined ...", "title": "Success of the thesis" }, { "paragraph_id": 39, "text": "Proofs in computability theory often invoke the Church–Turing thesis in an informal way to establish the computability of functions while avoiding the (often very long) details which would be involved in a rigorous, formal proof. To establish that a function is computable by Turing machine, it is usually considered sufficient to give an informal English description of how the function can be effectively computed, and then conclude \"by the Church–Turing thesis\" that the function is Turing computable (equivalently, partial recursive).", "title": "Informal usage in proofs" }, { "paragraph_id": 40, "text": "Dirk van Dalen gives the following example for the sake of illustrating this informal use of the Church–Turing thesis:", "title": "Informal usage in proofs" }, { "paragraph_id": 41, "text": "Example: Each infinite RE set contains an infinite recursive set.", "title": "Informal usage in proofs" }, { "paragraph_id": 42, "text": "Proof: Let A be infinite RE. We list the elements of A effectively, n0, n1, n2, n3, ...", "title": "Informal usage in proofs" }, { "paragraph_id": 43, "text": "From this list we extract an increasing sublist: put m0 = n0, after finitely many steps we find an nk such that nk > m0, put m1 = nk. We repeat this procedure to find m2 > m1, etc. this yields an effective listing of the subset B={m0, m1, m2,...} of A, with the property mi < mi+1.", "title": "Informal usage in proofs" }, { "paragraph_id": 44, "text": "Claim. B is decidable. For, in order to test k in B we must check if k = mi for some i. Since the sequence of mi's is increasing we have to produce at most k+1 elements of the list and compare them with k. If none of them is equal to k, then k not in B. Since this test is effective, B is decidable and, by Church's thesis, recursive.", "title": "Informal usage in proofs" }, { "paragraph_id": 45, "text": "In order to make the above example completely rigorous, one would have to carefully construct a Turing machine, or λ-function, or carefully invoke recursion axioms, or at best, cleverly invoke various theorems of computability theory. But because the computability theorist believes that Turing computability correctly captures what can be computed effectively, and because an effective procedure is spelled out in English for deciding the set B, the computability theorist accepts this as proof that the set is indeed recursive.", "title": "Informal usage in proofs" }, { "paragraph_id": 46, "text": "The success of the Church–Turing thesis prompted variations of the thesis to be proposed. For example, the physical Church–Turing thesis states: \"All physically computable functions are Turing-computable.\"", "title": "Variations" }, { "paragraph_id": 47, "text": "The Church–Turing thesis says nothing about the efficiency with which one model of computation can simulate another. It has been proved for instance that a (multi-tape) universal Turing machine only suffers a logarithmic slowdown factor in simulating any Turing machine.", "title": "Variations" }, { "paragraph_id": 48, "text": "A variation of the Church–Turing thesis addresses whether an arbitrary but \"reasonable\" model of computation can be efficiently simulated. This is called the feasibility thesis, also known as the (classical) complexity-theoretic Church–Turing thesis or the extended Church–Turing thesis, which is not due to Church or Turing, but rather was realized gradually in the development of complexity theory. It states: \"A probabilistic Turing machine can efficiently simulate any realistic model of computation.\" The word 'efficiently' here means up to polynomial-time reductions. This thesis was originally called computational complexity-theoretic Church–Turing thesis by Ethan Bernstein and Umesh Vazirani (1997). The complexity-theoretic Church–Turing thesis, then, posits that all 'reasonable' models of computation yield the same class of problems that can be computed in polynomial time. Assuming the conjecture that probabilistic polynomial time (BPP) equals deterministic polynomial time (P), the word 'probabilistic' is optional in the complexity-theoretic Church–Turing thesis. A similar thesis, called the invariance thesis, was introduced by Cees F. Slot and Peter van Emde Boas. It states: \"'Reasonable' machines can simulate each other within a polynomially bounded overhead in time and a constant-factor overhead in space.\" The thesis originally appeared in a paper at STOC'84, which was the first paper to show that polynomial-time overhead and constant-space overhead could be simultaneously achieved for a simulation of a Random Access Machine on a Turing machine.", "title": "Variations" }, { "paragraph_id": 49, "text": "If BQP is shown to be a strict superset of BPP, it would invalidate the complexity-theoretic Church–Turing thesis. In other words, there would be efficient quantum algorithms that perform tasks that do not have efficient probabilistic algorithms. This would not however invalidate the original Church–Turing thesis, since a quantum computer can always be simulated by a Turing machine, but it would invalidate the classical complexity-theoretic Church–Turing thesis for efficiency reasons. Consequently, the quantum complexity-theoretic Church–Turing thesis states: \"A quantum Turing machine can efficiently simulate any realistic model of computation.\"", "title": "Variations" }, { "paragraph_id": 50, "text": "Eugene Eberbach and Peter Wegner claim that the Church–Turing thesis is sometimes interpreted too broadly, stating \"Though [...] Turing machines express the behavior of algorithms, the broader assertion that algorithms precisely capture what can be computed is invalid\". They claim that forms of computation not captured by the thesis are relevant today, terms which they call super-Turing computation.", "title": "Variations" }, { "paragraph_id": 51, "text": "Philosophers have interpreted the Church–Turing thesis as having implications for the philosophy of mind. B. Jack Copeland states that it is an open empirical question whether there are actual deterministic physical processes that, in the long run, elude simulation by a Turing machine; furthermore, he states that it is an open empirical question whether any such processes are involved in the working of the human brain. There are also some important open questions which cover the relationship between the Church–Turing thesis and physics, and the possibility of hypercomputation. When applied to physics, the thesis has several possible meanings:", "title": "Philosophical implications" }, { "paragraph_id": 52, "text": "There are many other technical possibilities which fall outside or between these three categories, but these serve to illustrate the range of the concept.", "title": "Philosophical implications" }, { "paragraph_id": 53, "text": "Philosophical aspects of the thesis, regarding both physical and biological computers, are also discussed in Odifreddi's 1989 textbook on recursion theory.", "title": "Philosophical implications" }, { "paragraph_id": 54, "text": "One can formally define functions that are not computable. A well-known example of such a function is the Busy Beaver function. This function takes an input n and returns the largest number of symbols that a Turing machine with n states can print before halting, when run with no input. Finding an upper bound on the busy beaver function is equivalent to solving the halting problem, a problem known to be unsolvable by Turing machines. Since the busy beaver function cannot be computed by Turing machines, the Church–Turing thesis states that this function cannot be effectively computed by any method.", "title": "Non-computable functions" }, { "paragraph_id": 55, "text": "Several computational models allow for the computation of (Church-Turing) non-computable functions. These are known as hypercomputers. Mark Burgin argues that super-recursive algorithms such as inductive Turing machines disprove the Church–Turing thesis. His argument relies on a definition of algorithm broader than the ordinary one, so that non-computable functions obtained from some inductive Turing machines are called computable. This interpretation of the Church–Turing thesis differs from the interpretation commonly accepted in computability theory, discussed above. The argument that super-recursive algorithms are indeed algorithms in the sense of the Church–Turing thesis has not found broad acceptance within the computability research community.", "title": "Non-computable functions" } ]	In computability theory, the Church–Turing thesis is a thesis about the nature of computable functions. It states that a function on the natural numbers can be calculated by an effective method if and only if it is computable by a Turing machine. The thesis is named after American mathematician Alonzo Church and the British mathematician Alan Turing. Before the precise definition of computable function, mathematicians often used the informal term effectively calculable to describe functions that are computable by paper-and-pencil methods. In the 1930s, several independent attempts were made to formalize the notion of computability: In 1933, Kurt Gödel, with Jacques Herbrand, formalized the definition of the class of general recursive functions: the smallest class of functions that is closed under composition, recursion, and minimization, and includes zero, successor, and all projections. In 1936, Alonzo Church created a method for defining functions called the λ-calculus. Within λ-calculus, he defined an encoding of the natural numbers called the Church numerals. A function on the natural numbers is called λ-computable if the corresponding function on the Church numerals can be represented by a term of the λ-calculus. Also in 1936, before learning of Church's work, Alan Turing created a theoretical model for machines, now called Turing machines, that could carry out calculations from inputs by manipulating symbols on a tape. Given a suitable encoding of the natural numbers as sequences of symbols, a function on the natural numbers is called Turing computable if some Turing machine computes the corresponding function on encoded natural numbers. Church, Kleene, and Turing proved that these three formally defined classes of computable functions coincide: a function is λ-computable if and only if it is Turing computable, and if and only if it is general recursive. This has led mathematicians and computer scientists to believe that the concept of computability is accurately characterized by these three equivalent processes. Other formal attempts to characterize computability have subsequently strengthened this belief. On the other hand, the Church–Turing thesis states that the above three formally-defined classes of computable functions coincide with the informal notion of an effectively calculable function. Although the thesis has near-universal acceptance, it cannot be formally proven, as the concept of effective calculability is only informally defined. Since its inception, variations on the original thesis have arisen, including statements about what can physically be realized by a computer in our universe and what can be efficiently computed. These variations are not due to Church or Turing, but arise from later work in complexity theory and digital physics. The thesis also has implications for the philosophy of mind.	2001-10-31T01:49:10Z	2023-12-09T05:51:45Z	[ "Template:Citation", "Template:Alonzo Church", "Template:Harvs", "Template:Harvnb", "Template:Pages needed", "Template:Cite book", "Template:Authority control", "Template:Rp", "Template:Page needed", "Template:Harvcoltxt", "Template:Reflist", "Template:Cite journal", "Template:Cite dictionary", "Template:Harvtxt", "Template:Refend", "Template:R", "Template:Main", "Template:\"'", "Template:Metalogic", "Template:Citation needed", "Template:Cite thesis", "Template:Cite web", "Template:Cite video", "Template:SEP", "Template:ISBN", "Template:Mathematical logic", "Template:Clarify span", "Template:Anchor", "Template:One source section", "Template:Harvcolnb", "Template:Cite conference", "Template:Cite news", "Template:Short description", "Template:Redirect", "Template:Sup", "Template:Quote", "Template:Date missing", "Template:Cite SEP", "Template:Refbegin", "Template:Harvcol", "Template:Use dmy dates", "Template:See also", "Template:Blockquote" ]	https://en.wikipedia.org/wiki/Church%E2%80%93Turing_thesis
6,856	Chomsky (surname)	Chomsky (Polish: Chomski, Belarusian: Хомскі, Russian: Хомский, Ukrainian: Хомський, Hebrew: חומסקי, "from (Vyoska) Chomsk [pl]/ Khomsk [be] (nearby Brest, now Belarus)") is a surname of Slavic origin. Notable people with the surname include:	[ { "paragraph_id": 0, "text": "Chomsky (Polish: Chomski, Belarusian: Хомскі, Russian: Хомский, Ukrainian: Хомський, Hebrew: חומסקי, \"from (Vyoska) Chomsk [pl]/ Khomsk [be] (nearby Brest, now Belarus)\") is a surname of Slavic origin. Notable people with the surname include:", "title": "" } ]	Chomsky is a surname of Slavic origin. Notable people with the surname include: Alejandro Chomski, Argentine film director and screenwriter Aviva Chomsky, American historian Carol (Schatz) Chomsky (1930–2008), American linguist and wife of Noam Chomsky Judith Chomsky, American human rights lawyer and co-founder of the Juvenile Law Center Marvin J. Chomsky (1929–2022), American television and film director Noam Chomsky, American linguist and political activist, professor emeritus at MIT Stanisław Chomski, Polish speedway rider and coach William Chomsky (1896–1977), American scholar of Hebrew Pavel Osipovich Khomsky (1925–2016), Soviet and Russian theater director		2022-03-29T23:33:08Z	[ "Template:Lang-be", "Template:Lang-ru", "Template:Lang-uk", "Template:Lang-he", "Template:Ill", "Template:Surname", "Template:Seealso", "Template:Lang-pl" ]	https://en.wikipedia.org/wiki/Chomsky_(surname)
6,857	Computer multitasking	In computing, multitasking is the concurrent execution of multiple tasks (also known as processes) over a certain period of time. New tasks can interrupt already started ones before they finish, instead of waiting for them to end. As a result, a computer executes segments of multiple tasks in an interleaved manner, while the tasks share common processing resources such as central processing units (CPUs) and main memory. Multitasking automatically interrupts the running program, saving its state (partial results, memory contents and computer register contents) and loading the saved state of another program and transferring control to it. This "context switch" may be initiated at fixed time intervals (pre-emptive multitasking), or the running program may be coded to signal to the supervisory software when it can be interrupted (cooperative multitasking). Multitasking does not require parallel execution of multiple tasks at exactly the same time; instead, it allows more than one task to advance over a given period of time. Even on multiprocessor computers, multitasking allows many more tasks to be run than there are CPUs. Multitasking is a common feature of computer operating systems since at least the 1960s. It allows more efficient use of the computer hardware; when a program is waiting for some external event such as a user input or an input/output transfer with a peripheral to complete, the central processor can still be used with another program. In a time-sharing system, multiple human operators use the same processor as if it was dedicated to their use, while behind the scenes the computer is serving many users by multitasking their individual programs. In multiprogramming systems, a task runs until it must wait for an external event or until the operating system's scheduler forcibly swaps the running task out of the CPU. Real-time systems such as those designed to control industrial robots, require timely processing; a single processor might be shared between calculations of machine movement, communications, and user interface. Often multitasking operating systems include measures to change the priority of individual tasks, so that important jobs receive more processor time than those considered less significant. Depending on the operating system, a task might be as large as an entire application program, or might be made up of smaller threads that carry out portions of the overall program. A processor intended for use with multitasking operating systems may include special hardware to securely support multiple tasks, such as memory protection, and protection rings that ensure the supervisory software cannot be damaged or subverted by user-mode program errors. The term "multitasking" has become an international term, as the same word is used in many other languages such as German, Italian, Dutch, Romanian, Czech, Danish and Norwegian. In the early days of computing, CPU time was expensive, and peripherals were very slow. When the computer ran a program that needed access to a peripheral, the central processing unit (CPU) would have to stop executing program instructions while the peripheral processed the data. This was usually very inefficient. The first computer using a multiprogramming system was the British Leo III owned by J. Lyons and Co. During batch processing, several different programs were loaded in the computer memory, and the first one began to run. When the first program reached an instruction waiting for a peripheral, the context of this program was stored away, and the second program in memory was given a chance to run. The process continued until all programs finished running. The use of multiprogramming was enhanced by the arrival of virtual memory and virtual machine technology, which enabled individual programs to make use of memory and operating system resources as if other concurrently running programs were, for all practical purposes, nonexistent. Multiprogramming gives no guarantee that a program will run in a timely manner. Indeed, the first program may very well run for hours without needing access to a peripheral. As there were no users waiting at an interactive terminal, this was no problem: users handed in a deck of punched cards to an operator, and came back a few hours later for printed results. Multiprogramming greatly reduced wait times when multiple batches were being processed. Early multitasking systems used applications that voluntarily ceded time to one another. This approach, which was eventually supported by many computer operating systems, is known today as cooperative multitasking. Although it is now rarely used in larger systems except for specific applications such as CICS or the JES2 subsystem, cooperative multitasking was once the only scheduling scheme employed by Microsoft Windows and classic Mac OS to enable multiple applications to run simultaneously. Cooperative multitasking is still used today on RISC OS systems. As a cooperatively multitasked system relies on each process regularly giving up time to other processes on the system, one poorly designed program can consume all of the CPU time for itself, either by performing extensive calculations or by busy waiting; both would cause the whole system to hang. In a server environment, this is a hazard that makes the entire environment unacceptably fragile. Preemptive multitasking allows the computer system to more reliably guarantee to each process a regular "slice" of operating time. It also allows the system to deal rapidly with important external events like incoming data, which might require the immediate attention of one or another process. Operating systems were developed to take advantage of these hardware capabilities and run multiple processes preemptively. Preemptive multitasking was implemented in the PDP-6 Monitor and Multics in 1964, in OS/360 MFT in 1967, and in Unix in 1969, and was available in some operating systems for computers as small as DEC's PDP-8; it is a core feature of all Unix-like operating systems, such as Linux, Solaris and BSD with its derivatives, as well as modern versions of Windows. At any specific time, processes can be grouped into two categories: those that are waiting for input or output (called "I/O bound"), and those that are fully utilizing the CPU ("CPU bound"). In primitive systems, the software would often "poll", or "busywait" while waiting for requested input (such as disk, keyboard or network input). During this time, the system was not performing useful work. With the advent of interrupts and preemptive multitasking, I/O bound processes could be "blocked", or put on hold, pending the arrival of the necessary data, allowing other processes to utilize the CPU. As the arrival of the requested data would generate an interrupt, blocked processes could be guaranteed a timely return to execution. The earliest preemptive multitasking OS available to home users was Sinclair QDOS on the Sinclair QL, released in 1984, but very few people bought the machine. Commodore's Amiga, released the following year, was the first commercially successful home computer to use the technology, and its multimedia abilities make it a clear ancestor of contemporary multitasking personal computers. Microsoft made preemptive multitasking a core feature of their flagship operating system in the early 1990s when developing Windows NT 3.1 and then Windows 95. In 1988 Apple offered A/UX as a UNIX System V-based alternative to the Classic Mac OS. In 2001 Apple switched to the NeXTSTEP-influenced Mac OS X. A similar model is used in Windows 9x and the Windows NT family, where native 32-bit applications are multitasked preemptively. 64-bit editions of Windows, both for the x86-64 and Itanium architectures, no longer support legacy 16-bit applications, and thus provide preemptive multitasking for all supported applications. Another reason for multitasking was in the design of real-time computing systems, where there are a number of possibly unrelated external activities needed to be controlled by a single processor system. In such systems a hierarchical interrupt system is coupled with process prioritization to ensure that key activities were given a greater share of available process time. As multitasking greatly improved the throughput of computers, programmers started to implement applications as sets of cooperating processes (e. g., one process gathering input data, one process processing input data, one process writing out results on disk). This, however, required some tools to allow processes to efficiently exchange data. Threads were born from the idea that the most efficient way for cooperating processes to exchange data would be to share their entire memory space. Thus, threads are effectively processes that run in the same memory context and share other resources with their parent processes, such as open files. Threads are described as lightweight processes because switching between threads does not involve changing the memory context. While threads are scheduled preemptively, some operating systems provide a variant to threads, named fibers, that are scheduled cooperatively. On operating systems that do not provide fibers, an application may implement its own fibers using repeated calls to worker functions. Fibers are even more lightweight than threads, and somewhat easier to program with, although they tend to lose some or all of the benefits of threads on machines with multiple processors. Some systems directly support multithreading in hardware. Essential to any multitasking system is to safely and effectively share access to system resources. Access to memory must be strictly managed to ensure that no process can inadvertently or deliberately read or write to memory locations outside the process's address space. This is done for the purpose of general system stability and data integrity, as well as data security. In general, memory access management is a responsibility of the operating system kernel, in combination with hardware mechanisms that provide supporting functionalities, such as a memory management unit (MMU). If a process attempts to access a memory location outside its memory space, the MMU denies the request and signals the kernel to take appropriate actions; this usually results in forcibly terminating the offending process. Depending on the software and kernel design and the specific error in question, the user may receive an access violation error message such as "segmentation fault". In a well designed and correctly implemented multitasking system, a given process can never directly access memory that belongs to another process. An exception to this rule is in the case of shared memory; for example, in the System V inter-process communication mechanism the kernel allocates memory to be mutually shared by multiple processes. Such features are often used by database management software such as PostgreSQL. Inadequate memory protection mechanisms, either due to flaws in their design or poor implementations, allow for security vulnerabilities that may be potentially exploited by malicious software. Use of a swap file or swap partition is a way for the operating system to provide more memory than is physically available by keeping portions of the primary memory in secondary storage. While multitasking and memory swapping are two completely unrelated techniques, they are very often used together, as swapping memory allows more tasks to be loaded at the same time. Typically, a multitasking system allows another process to run when the running process hits a point where it has to wait for some portion of memory to be reloaded from secondary storage. Processes that are entirely independent are not much trouble to program in a multitasking environment. Most of the complexity in multitasking systems comes from the need to share computer resources between tasks and to synchronize the operation of co-operating tasks. Various concurrent computing techniques are used to avoid potential problems caused by multiple tasks attempting to access the same resource. Bigger systems were sometimes built with a central processor(s) and some number of I/O processors, a kind of asymmetric multiprocessing. Over the years, multitasking systems have been refined. Modern operating systems generally include detailed mechanisms for prioritizing processes, while symmetric multiprocessing has introduced new complexities and capabilities.	[ { "paragraph_id": 0, "text": "In computing, multitasking is the concurrent execution of multiple tasks (also known as processes) over a certain period of time. New tasks can interrupt already started ones before they finish, instead of waiting for them to end. As a result, a computer executes segments of multiple tasks in an interleaved manner, while the tasks share common processing resources such as central processing units (CPUs) and main memory. Multitasking automatically interrupts the running program, saving its state (partial results, memory contents and computer register contents) and loading the saved state of another program and transferring control to it. This \"context switch\" may be initiated at fixed time intervals (pre-emptive multitasking), or the running program may be coded to signal to the supervisory software when it can be interrupted (cooperative multitasking).", "title": "" }, { "paragraph_id": 1, "text": "Multitasking does not require parallel execution of multiple tasks at exactly the same time; instead, it allows more than one task to advance over a given period of time. Even on multiprocessor computers, multitasking allows many more tasks to be run than there are CPUs.", "title": "" }, { "paragraph_id": 2, "text": "Multitasking is a common feature of computer operating systems since at least the 1960s. It allows more efficient use of the computer hardware; when a program is waiting for some external event such as a user input or an input/output transfer with a peripheral to complete, the central processor can still be used with another program. In a time-sharing system, multiple human operators use the same processor as if it was dedicated to their use, while behind the scenes the computer is serving many users by multitasking their individual programs. In multiprogramming systems, a task runs until it must wait for an external event or until the operating system's scheduler forcibly swaps the running task out of the CPU. Real-time systems such as those designed to control industrial robots, require timely processing; a single processor might be shared between calculations of machine movement, communications, and user interface.", "title": "" }, { "paragraph_id": 3, "text": "Often multitasking operating systems include measures to change the priority of individual tasks, so that important jobs receive more processor time than those considered less significant. Depending on the operating system, a task might be as large as an entire application program, or might be made up of smaller threads that carry out portions of the overall program.", "title": "" }, { "paragraph_id": 4, "text": "A processor intended for use with multitasking operating systems may include special hardware to securely support multiple tasks, such as memory protection, and protection rings that ensure the supervisory software cannot be damaged or subverted by user-mode program errors.", "title": "" }, { "paragraph_id": 5, "text": "The term \"multitasking\" has become an international term, as the same word is used in many other languages such as German, Italian, Dutch, Romanian, Czech, Danish and Norwegian.", "title": "" }, { "paragraph_id": 6, "text": "In the early days of computing, CPU time was expensive, and peripherals were very slow. When the computer ran a program that needed access to a peripheral, the central processing unit (CPU) would have to stop executing program instructions while the peripheral processed the data. This was usually very inefficient.", "title": "Multiprogramming" }, { "paragraph_id": 7, "text": "The first computer using a multiprogramming system was the British Leo III owned by J. Lyons and Co. During batch processing, several different programs were loaded in the computer memory, and the first one began to run. When the first program reached an instruction waiting for a peripheral, the context of this program was stored away, and the second program in memory was given a chance to run. The process continued until all programs finished running.", "title": "Multiprogramming" }, { "paragraph_id": 8, "text": "The use of multiprogramming was enhanced by the arrival of virtual memory and virtual machine technology, which enabled individual programs to make use of memory and operating system resources as if other concurrently running programs were, for all practical purposes, nonexistent.", "title": "Multiprogramming" }, { "paragraph_id": 9, "text": "Multiprogramming gives no guarantee that a program will run in a timely manner. Indeed, the first program may very well run for hours without needing access to a peripheral. As there were no users waiting at an interactive terminal, this was no problem: users handed in a deck of punched cards to an operator, and came back a few hours later for printed results. Multiprogramming greatly reduced wait times when multiple batches were being processed.", "title": "Multiprogramming" }, { "paragraph_id": 10, "text": "Early multitasking systems used applications that voluntarily ceded time to one another. This approach, which was eventually supported by many computer operating systems, is known today as cooperative multitasking. Although it is now rarely used in larger systems except for specific applications such as CICS or the JES2 subsystem, cooperative multitasking was once the only scheduling scheme employed by Microsoft Windows and classic Mac OS to enable multiple applications to run simultaneously. Cooperative multitasking is still used today on RISC OS systems.", "title": "Cooperative multitasking" }, { "paragraph_id": 11, "text": "As a cooperatively multitasked system relies on each process regularly giving up time to other processes on the system, one poorly designed program can consume all of the CPU time for itself, either by performing extensive calculations or by busy waiting; both would cause the whole system to hang. In a server environment, this is a hazard that makes the entire environment unacceptably fragile.", "title": "Cooperative multitasking" }, { "paragraph_id": 12, "text": "Preemptive multitasking allows the computer system to more reliably guarantee to each process a regular \"slice\" of operating time. It also allows the system to deal rapidly with important external events like incoming data, which might require the immediate attention of one or another process. Operating systems were developed to take advantage of these hardware capabilities and run multiple processes preemptively. Preemptive multitasking was implemented in the PDP-6 Monitor and Multics in 1964, in OS/360 MFT in 1967, and in Unix in 1969, and was available in some operating systems for computers as small as DEC's PDP-8; it is a core feature of all Unix-like operating systems, such as Linux, Solaris and BSD with its derivatives, as well as modern versions of Windows.", "title": "Preemptive multitasking" }, { "paragraph_id": 13, "text": "At any specific time, processes can be grouped into two categories: those that are waiting for input or output (called \"I/O bound\"), and those that are fully utilizing the CPU (\"CPU bound\"). In primitive systems, the software would often \"poll\", or \"busywait\" while waiting for requested input (such as disk, keyboard or network input). During this time, the system was not performing useful work. With the advent of interrupts and preemptive multitasking, I/O bound processes could be \"blocked\", or put on hold, pending the arrival of the necessary data, allowing other processes to utilize the CPU. As the arrival of the requested data would generate an interrupt, blocked processes could be guaranteed a timely return to execution.", "title": "Preemptive multitasking" }, { "paragraph_id": 14, "text": "The earliest preemptive multitasking OS available to home users was Sinclair QDOS on the Sinclair QL, released in 1984, but very few people bought the machine. Commodore's Amiga, released the following year, was the first commercially successful home computer to use the technology, and its multimedia abilities make it a clear ancestor of contemporary multitasking personal computers. Microsoft made preemptive multitasking a core feature of their flagship operating system in the early 1990s when developing Windows NT 3.1 and then Windows 95. In 1988 Apple offered A/UX as a UNIX System V-based alternative to the Classic Mac OS. In 2001 Apple switched to the NeXTSTEP-influenced Mac OS X.", "title": "Preemptive multitasking" }, { "paragraph_id": 15, "text": "A similar model is used in Windows 9x and the Windows NT family, where native 32-bit applications are multitasked preemptively. 64-bit editions of Windows, both for the x86-64 and Itanium architectures, no longer support legacy 16-bit applications, and thus provide preemptive multitasking for all supported applications.", "title": "Preemptive multitasking" }, { "paragraph_id": 16, "text": "Another reason for multitasking was in the design of real-time computing systems, where there are a number of possibly unrelated external activities needed to be controlled by a single processor system. In such systems a hierarchical interrupt system is coupled with process prioritization to ensure that key activities were given a greater share of available process time.", "title": "Real time" }, { "paragraph_id": 17, "text": "As multitasking greatly improved the throughput of computers, programmers started to implement applications as sets of cooperating processes (e. g., one process gathering input data, one process processing input data, one process writing out results on disk). This, however, required some tools to allow processes to efficiently exchange data.", "title": "Multithreading" }, { "paragraph_id": 18, "text": "Threads were born from the idea that the most efficient way for cooperating processes to exchange data would be to share their entire memory space. Thus, threads are effectively processes that run in the same memory context and share other resources with their parent processes, such as open files. Threads are described as lightweight processes because switching between threads does not involve changing the memory context.", "title": "Multithreading" }, { "paragraph_id": 19, "text": "While threads are scheduled preemptively, some operating systems provide a variant to threads, named fibers, that are scheduled cooperatively. On operating systems that do not provide fibers, an application may implement its own fibers using repeated calls to worker functions. Fibers are even more lightweight than threads, and somewhat easier to program with, although they tend to lose some or all of the benefits of threads on machines with multiple processors.", "title": "Multithreading" }, { "paragraph_id": 20, "text": "Some systems directly support multithreading in hardware.", "title": "Multithreading" }, { "paragraph_id": 21, "text": "Essential to any multitasking system is to safely and effectively share access to system resources. Access to memory must be strictly managed to ensure that no process can inadvertently or deliberately read or write to memory locations outside the process's address space. This is done for the purpose of general system stability and data integrity, as well as data security.", "title": "Memory protection" }, { "paragraph_id": 22, "text": "In general, memory access management is a responsibility of the operating system kernel, in combination with hardware mechanisms that provide supporting functionalities, such as a memory management unit (MMU). If a process attempts to access a memory location outside its memory space, the MMU denies the request and signals the kernel to take appropriate actions; this usually results in forcibly terminating the offending process. Depending on the software and kernel design and the specific error in question, the user may receive an access violation error message such as \"segmentation fault\".", "title": "Memory protection" }, { "paragraph_id": 23, "text": "In a well designed and correctly implemented multitasking system, a given process can never directly access memory that belongs to another process. An exception to this rule is in the case of shared memory; for example, in the System V inter-process communication mechanism the kernel allocates memory to be mutually shared by multiple processes. Such features are often used by database management software such as PostgreSQL.", "title": "Memory protection" }, { "paragraph_id": 24, "text": "Inadequate memory protection mechanisms, either due to flaws in their design or poor implementations, allow for security vulnerabilities that may be potentially exploited by malicious software.", "title": "Memory protection" }, { "paragraph_id": 25, "text": "Use of a swap file or swap partition is a way for the operating system to provide more memory than is physically available by keeping portions of the primary memory in secondary storage. While multitasking and memory swapping are two completely unrelated techniques, they are very often used together, as swapping memory allows more tasks to be loaded at the same time. Typically, a multitasking system allows another process to run when the running process hits a point where it has to wait for some portion of memory to be reloaded from secondary storage.", "title": "Memory swapping" }, { "paragraph_id": 26, "text": "Processes that are entirely independent are not much trouble to program in a multitasking environment. Most of the complexity in multitasking systems comes from the need to share computer resources between tasks and to synchronize the operation of co-operating tasks.", "title": "Programming" }, { "paragraph_id": 27, "text": "Various concurrent computing techniques are used to avoid potential problems caused by multiple tasks attempting to access the same resource.", "title": "Programming" }, { "paragraph_id": 28, "text": "Bigger systems were sometimes built with a central processor(s) and some number of I/O processors, a kind of asymmetric multiprocessing.", "title": "Programming" }, { "paragraph_id": 29, "text": "Over the years, multitasking systems have been refined. Modern operating systems generally include detailed mechanisms for prioritizing processes, while symmetric multiprocessing has introduced new complexities and capabilities.", "title": "Programming" } ]	In computing, multitasking is the concurrent execution of multiple tasks over a certain period of time. New tasks can interrupt already started ones before they finish, instead of waiting for them to end. As a result, a computer executes segments of multiple tasks in an interleaved manner, while the tasks share common processing resources such as central processing units (CPUs) and main memory. Multitasking automatically interrupts the running program, saving its state and loading the saved state of another program and transferring control to it. This "context switch" may be initiated at fixed time intervals, or the running program may be coded to signal to the supervisory software when it can be interrupted. Multitasking does not require parallel execution of multiple tasks at exactly the same time; instead, it allows more than one task to advance over a given period of time. Even on multiprocessor computers, multitasking allows many more tasks to be run than there are CPUs. Multitasking is a common feature of computer operating systems since at least the 1960s. It allows more efficient use of the computer hardware; when a program is waiting for some external event such as a user input or an input/output transfer with a peripheral to complete, the central processor can still be used with another program. In a time-sharing system, multiple human operators use the same processor as if it was dedicated to their use, while behind the scenes the computer is serving many users by multitasking their individual programs. In multiprogramming systems, a task runs until it must wait for an external event or until the operating system's scheduler forcibly swaps the running task out of the CPU. Real-time systems such as those designed to control industrial robots, require timely processing; a single processor might be shared between calculations of machine movement, communications, and user interface. Often multitasking operating systems include measures to change the priority of individual tasks, so that important jobs receive more processor time than those considered less significant. Depending on the operating system, a task might be as large as an entire application program, or might be made up of smaller threads that carry out portions of the overall program. A processor intended for use with multitasking operating systems may include special hardware to securely support multiple tasks, such as memory protection, and protection rings that ensure the supervisory software cannot be damaged or subverted by user-mode program errors. The term "multitasking" has become an international term, as the same word is used in many other languages such as German, Italian, Dutch, Romanian, Czech, Danish and Norwegian.	2001-10-22T12:23:12Z	2023-11-30T00:16:46Z	[ "Template:Main", "Template:Cite web", "Template:ISBN", "Template:Cite magazine", "Template:Authority control", "Template:Parallel computing", "Template:Short description", "Template:Citation needed", "Template:Anchor", "Template:Reflist", "Template:Cite book", "Template:Cite journal", "Template:Operating systems" ]	https://en.wikipedia.org/wiki/Computer_multitasking
6,859	Chiang Kai-shek	Chiang Kai-shek (31 October 1887 – 5 April 1975) was a Chinese politician, revolutionary, and military leader who served as the leader of the Republic of China (ROC) and the Generalissimo of the National Revolutionary Army. He held these positions in mainland China from 1928 until 1949, when his nationalist Kuomintang (KMT) party was defeated in the Chinese Civil War by the Chinese Communist Party (CCP)—thereafter, he led the remnant of the ROC government on the island of Taiwan until his death. Born in Zhejiang, Chiang was a member of the Kuomintang, and a lieutenant of Sun Yat-sen in the revolution to overthrow the Beiyang government and reunify China. With help from the Soviets and the Chinese Communist Party, Chiang organized the military for Sun's Canton Nationalist Government and headed the Whampoa Military Academy. As commander-in-chief of the National Revolutionary Army, he led the Northern Expedition from 1926 to 1928, before defeating a coalition of warlords and nominally reunifying China under a new nationalist government. Midway through the Northern Expedition, the KMT–CCP alliance broke down and Chiang massacred communists and KMT leftists inside the party, triggering a civil war with the CCP, which he eventually lost in 1949. As the leader of the Republic of China during the Nanjing decade, Chiang sought to strike a difficult balance between modernizing China, while also devoting resources to defending the nation against the CCP, warlords, and the impending Japanese threat. Trying to avoid a war with Japan while hostilities with the CCP continued, he was kidnapped in the Xi'an Incident, and obliged to form an Anti-Japanese United Front with the CCP. Following the Marco Polo Bridge Incident in 1937, he mobilized China for the Second Sino-Japanese War. For eight years, he led the war of resistance against a vastly superior enemy, mostly from the wartime capital Chongqing. As the leader of a major Allied power, Chiang met with British prime minister Winston Churchill and American president Franklin D. Roosevelt in the Cairo Conference to discuss terms for the Japanese surrender. When the Second World War ended, the Civil War with the communists (by then led by Mao Zedong) resumed. Chiang's nationalists were mostly defeated in a few decisive battles in 1948. In 1949, Chiang's government and army retreated to the island of Taiwan, where Chiang imposed martial law and persecuted critics during the White Terror. Presiding over a period of social reforms and economic prosperity, Chiang won five elections to six-year terms as President of the Republic of China in which he faced minimal opposition or was elected unopposed. Three years into his fifth term as president, and one year before the death of Mao, he died in 1975. He also held the position of director-general within the Kuomintang until his death. Chiang was one of the longest-serving non-royal heads of state in the 20th century and the longest-serving non-royal ruler of China, having held the post for 46 years. Like Mao, Chiang is regarded as a controversial figure. Supporters credit him with playing a major part in unifying the nation, leading the Chinese resistance against Japan, and countering CCP influence and economic development in both mainland China and Taiwan. Detractors and critics denounce him as a brutal dictator at the front of a corrupt authoritarian regime that massacred civilians and suppressed political dissents, and often accuse him of being a fascist. He is also criticized for flooding the Yellow River, a move that subsequently caused the Henan Famine during the Second Sino-Japanese War. Other historians argued that despite his many faults, Chiang's ideology notably differs from other right-wing dictators of the 20th century, and he did not genuinely espouse the ideology of fascism. They argue that Chiang made genuine efforts to improve mainland China and Taiwan's economic and social conditions, such as improving women's rights and land reform. Chiang was also credited with transforming China from a semi-colony of various imperialist powers to an independent country by amending the unequal treaties signed by previous governments, as well as moving various Chinese national treasures and traditional Chinese artworks to the National Palace Museum in Taipei during the 1949 retreat. Like many other Chinese historical figures, Chiang used several names throughout his life. The name inscribed in the genealogical records of his family is Chiang Chou-t‘ai (Chinese: 蔣周泰; pinyin: Jiǎng Zhōutài; Wade–Giles: Chiang Chou-t‘ai). This so-called "register name" (譜名) is the one by which his extended relatives knew him, and the one he used in formal occasions, such as when he was married. In deference to tradition, family members did not use the register name in conversation with people outside of the family. The concept of a "real" or original name is/was not as clear-cut in China as it is in the Western world. In honor of tradition, Chinese families waited a number of years before officially naming their children. In the meantime, they used a "milk name" (乳名), given to the infant shortly after his birth and known only to the close family. So the name that Chiang received at birth was Chiang Jui-yüan (Chinese: 蔣瑞元; pinyin: Jiǎng Ruìyuán). In 1903, the 16-year-old Chiang went to Ningbo as a student, and chose a "school name" (學名). This was the formal name of a person, used by older people to address him, and the one he would use the most in the first decades of his life (as a person grew older, younger generations would use one of the courtesy names instead). Colloquially, the school name is called "big name" (大名), whereas the "milk name" is known as the "small name" (小名). The school name that Chiang chose for himself was Zhiqing (Chinese: 志清; Wade–Giles: Chih-ch‘ing, which means "purity of aspirations"). For the next fifteen years or so, Chiang was known as Jiang Zhiqing (Wade–Giles: Chiang Chi-ch‘ing). This is the name by which Sun Yat-sen knew him when Chiang joined the republicans in Guangdong in the 1910s. In 1912, when Chiang was in Japan, he started to use the name Chiang Kai-shek (Chinese: 蔣介石; pinyin: Jiǎng Jièshí; Wade–Giles: Chiang Chieh-shih) as a pen name for the articles that he published in a Chinese magazine he founded: Voice of the Army (軍聲). Jieshi is the pinyin romanization of this name, based on Standard Chinese, but the most recognized romanized rendering is Kai-shek which is in Cantonese romanization. Because the Republic of China was based in Canton (a Cantonese-speaking area, now known as Guangdong), Chiang (who never spoke Cantonese but was a native Wu speaker) became known by Westerners under the Cantonese romanization of his courtesy name, while the family name as known in English seems to be the Mandarin pronunciation of his Chinese family name, transliterated in Wade–Giles. "Kai-shek"/"Jieshi" soon became Chiang's courtesy name (字). Some think the name was chosen from the classic Chinese book the I Ching; "介于石"; '[he who is] firm as a rock"', is the beginning of line 2 of Hexagram 16, "豫". Others note that the first character of his courtesy name is also the first character of the courtesy name of his brother and other male relatives on the same generational line, while the second character of his courtesy name shi (石—meaning "stone") suggests the second character of his "register name" tai (泰—the famous Mount Tai). Courtesy names in China often bore a connection with the personal name of the person. As the courtesy name is the name used by people of the same generation to address the person, Chiang soon became known under this new name. Sometime in 1917 or 1918, as Chiang became close to Sun Yat-sen, he changed his name from Jiang Zhiqing to Jiang Zhongzheng (Chinese: 蔣中正; pinyin: Jiǎng Zhōngzhèng). By adopting the name Chung-cheng, he was choosing a name very similar to the name of Sun Yat-sen, who is known among Chinese as Zhongshan (中山—meaning "central mountain"), thus establishing a link between the two. The meaning of uprightness, rectitude, or orthodoxy, implied by his name, also positioned him as the legitimate heir of Sun Yat-sen and his ideas. It was readily accepted by members of the Chinese Nationalist Party and is the name under which Chiang is still commonly known in Taiwan. Often the name is shortened to "Chung-cheng" only. Many public places in Taiwan are named Chungcheng after Chiang. For many years passengers arriving at the Chiang Kai-shek International Airport were greeted by signs in Chinese welcoming them to the "Chung Cheng International Airport". Similarly, the monument erected to Chiang's memory in Taipei, known in English as Chiang Kai-shek Memorial Hall, was named "Chung Cheng Memorial Hall" in Chinese. In Singapore, Chung Cheng High School was named after him. His name is also written in Taiwan as "The Late President Honorable Chiang" (先總統蔣公), where the one-character-wide space in front of his name known as Nuo tai shows respect. He is often called Honorable Chiang. In this context, his surname "Chiang" in this article is spelled using the Wade–Giles system of transliteration for Standard Chinese as opposed to Hanyu Pinyin though the latter was adopted by the Republic of China government in 2009 as its official romanization. Chiang was born on 31 October 1887, in Xikou, a town in Fenghua, Zhejiang, China, about 30 kilometers (19 mi) west of central Ningbo. He was born into a family of Wu Chinese-speaking people with their ancestral home—a concept important in Chinese society—in Heqiao [zh], a town in Yixing, Jiangsu, about 38 km (24 mi) southwest of central Wuxi and 10 km (6.2 mi) from the shores of Lake Tai. He was the third child and second son of his father Chiang Chao-Tsung [zh] (also Chiang Su-an; 1842–1895; 蔣肇聰) and the first child of his father's third wife Wang Tsai-yu [zh] (1863–1921; 王采玉) who were members of a prosperous family of salt merchants. Chiang's father died when he was eight, and he wrote of his mother as the "embodiment of Confucian virtues". The young Chiang was inspired throughout his youth by the realization that the reputation of an honored family rested upon his shoulders. He was a naughty child. At a young age he was interested in the military. As he grew older, Chiang became more aware of the issues that surrounded him and in his speech to the Kuomintang in 1945 said: As you all know I was an orphan boy in a poor family. Deprived of any protection after the death of her husband, my mother was exposed to the most ruthless exploitation by neighbouring ruffians and the local gentry. The efforts she made in fighting against the intrigues of these family intruders certainly endowed her child, brought up in such an environment, with an indomitable spirit to fight for justice. I felt throughout my childhood that my mother and I were fighting a helpless lone war. We were alone in a desert, with no available or possible assistance could we look forward to. But our determination was never shaken, nor was hope abandoned. In early 1906, Chiang cut off his queue, the required hairstyle of men during the Qing dynasty, and had it sent home from school, shocking the people in his hometown. Chiang grew up at a time in which military defeats, natural disasters, famines, revolts, unequal treaties and civil wars had left the Manchu-dominated Qing dynasty destabilized and in debt. Successive demands of the Western powers and Japan since the Opium War had left China owing millions of taels of silver. During his first visit to Japan to pursue a military career from April 1906 to later that year, he describes himself as having strong nationalistic feelings with a desire, among other things, to 'expel the Manchu Qing and to restore China'. In a 1969 speech, Chiang related a story about his boat trip to Japan at nineteen years old. Another passenger on the ship, a Chinese fellow student who was in the habit of spitting on the floor, was chided by a Chinese sailor who said that Japanese people did not spit on the floor, but instead would spit into a handkerchief. Chiang used the story as an example of how the common man in 1969 Taiwan had not developed the spirit of public sanitation that Japan had. Chiang decided to pursue a military career. He began his military training at the Baoding Military Academy in 1906, the same year Japan left its bimetallic currency standard, devaluing the Japanese yen. He left for Tokyo Shinbu Gakko, a preparatory school for the Imperial Japanese Army Academy intended for Chinese students, in 1907. There, he came under the influence of compatriots to support the revolutionary movement to overthrow the Manchu-dominated Qing dynasty and to set up a Han-dominated Chinese republic. He befriended Chen Qimei, and in 1908 Chen brought Chiang into the Tongmenghui, an important revolutionary brotherhood of the era. Finishing his military schooling at Tokyo Shinbu Gakko, Chiang served in the Imperial Japanese Army from 1909 to 1911. After learning of the Wuchang uprising, Chiang returned to China in 1911, intending to fight as an artillery officer. He served in the revolutionary forces, leading a regiment in Shanghai under his friend and mentor Chen Qimei, as one of Chen's chief lieutenants. In early 1912 a dispute arose between Chen and Tao Chengzhang, an influential member of the Revolutionary Alliance who opposed both Sun Yat-sen and Chen. Tao sought to avoid escalating the quarrel by hiding in a hospital, but Chiang discovered him there. Chen dispatched assassins. Chiang may not have taken part in the assassination, but would later assume responsibility to help Chen avoid trouble. Chen valued Chiang despite Chiang's already legendary temper, regarding such bellicosity as useful in a military leader. Chiang's friendship with Chen Qimei signaled an association with Shanghai's criminal syndicate (the Green Gang headed by Du Yuesheng and Huang Jinrong). During Chiang's time in Shanghai, the Shanghai International Settlement police observed him and eventually charged him with various felonies. These charges never resulted in a trial, and Chiang was never jailed. Chiang became a founding member of the Nationalist Party (a forerunner of the KMT) after the success (February 1912) of the 1911 Revolution. After the takeover of the Republican government by Yuan Shikai and the failed Second Revolution in 1913, Chiang, like his KMT comrades, divided his time between exile in Japan and the havens of the Shanghai International Settlement. In Shanghai, Chiang cultivated ties with the city's underworld gangs, which were dominated by the notorious Green Gang and its leader Du Yuesheng. On 18 May 1916 agents of Yuan Shikai assassinated Chen Qimei. Chiang then succeeded Chen as leader of the Chinese Revolutionary Party in Shanghai. Sun Yat-sen's political career reached its lowest point during this time—most of his old Revolutionary Alliance comrades refused to join him in the exiled Chinese Revolutionary Party. In 1917, Sun Yat-sen moved his base of operations to Canton (now known as Guangzhou) and Chiang joined him in 1918. At this time Sun remained largely sidelined; without arms or money, he was soon expelled from Guangdong (Canton province) and exiled again to Shanghai. He was restored to Guangdong with mercenary help in 1920. After his return to Guangdong, a rift developed between Sun, who sought to militarily unify China under the KMT, and Guangdong Governor Chen Jiongming, who wanted to implement a federalist system with Guangdong as a model province. On 16 June 1922 Ye Ju, a general of Chen's whom Sun had attempted to exile, led an assault on Guangdong's Presidential Palace. Sun had already fled to the naval yard and boarded the SS Haiqi, but his wife narrowly evaded shelling and rifle-fire as she fled. They met on the SS Yongfeng, where Chiang joined them as swiftly as he could return from Shanghai, where he was ritually mourning his mother's death. For about 50 days, Chiang stayed with Sun, protecting and caring for him and earning his lasting trust. They abandoned their attacks on Chen on 9 August, taking a British ship to Hong Kong and traveling to Shanghai by steamer. Sun regained control of Guangdong in early 1923, again with the help of mercenaries from Yunnan and of the Comintern. Undertaking a reform of the KMT, he established a revolutionary government aimed at unifying China under the KMT. That same year Sun sent Chiang to spend three months in Moscow studying the Soviet political and military system. During his trip to Russia, Chiang met Leon Trotsky and other Soviet leaders, but quickly came to the conclusion that the Russian model of government was not suitable for China. Chiang later sent his eldest son, Ching-Kuo, to study in Russia. After his father's split from the First United Front in 1927, Ching-Kuo was forced to stay there, as a hostage, until 1937. Chiang wrote in his diary, "It is not worth it to sacrifice the interest of the country for the sake of my son." Chiang even refused to negotiate a prisoner swap for his son in exchange for the Chinese Communist Party leader. His attitude remained consistent, and he continued to maintain, by 1937, that "I would rather have no offspring than sacrifice our nation's interests." Chiang had absolutely no intention of ceasing the war against the Communists. Chiang Kai-shek returned to Guangdong and in 1924 Sun appointed him Commandant of the Whampoa Military Academy. Chiang resigned from the office after one month in disagreement with Sun's extremely close cooperation with the Comintern, but returned at Sun's demand. The early years at Whampoa allowed Chiang to cultivate a cadre of young officers loyal to both the KMT and himself. Throughout his rise to power, Chiang also benefited from membership within the nationalist Tiandihui fraternity, to which Sun Yat-sen also belonged, and which remained a source of support during his leadership of the Kuomintang. Sun Yat-sen died on 12 March 1925, creating a power vacuum in the Kuomintang. A contest ensued among Wang Jingwei, Liao Zhongkai, and Hu Hanmin. In August, Liao was assassinated and Hu was arrested for his connections to the murderers. Wang Jingwei, who had succeeded Sun as chairman of the Guangdong regime, seemed ascendant but was forced into exile by Chiang following the Canton Coup. The SS Yongfeng, renamed the Zhongshan in Sun's honour, had appeared off Changzhou, the location of the Whampoa Academy, on apparently-falsified orders and amid a series of unusual phone calls trying to ascertain Chiang's location. He initially considered fleeing Guangdong and even booked passage on a Japanese steamer but then decided to use his military connections to declare martial law on 20 March 1926 and to crack down on Communist and Soviet influence over the National Revolutionary Army, the military academy, and the party. The right wing of the party supported him, and Joseph Stalin, anxious to maintain Soviet influence in the area, had his lieutenants agree to Chiang's demands on a reduced Communist presence in the KMT leadership in exchange for certain other concessions. The rapid replacement of leadership enabled Chiang to effectively end civilian oversight of the military after 15 May, though his authority was somewhat limited by the army's own regional composition and divided loyalties. On 5 June 1926, he was named commander-in-chief of the National Revolutionary Army and, on 27 July, he finally launched Sun's long-delayed Northern Expedition, aimed at conquering the northern warlords and bringing China together under the KMT. The NRA branched into three divisions: to the west was the returned Wang Jingwei, who led a column to take Wuhan; Bai Chongxi's column went east to take Shanghai; Chiang himself led in the middle route, planning to take Nanjing before pressing ahead to capture Beijing. However, in January 1927, Wang Jingwei and his KMT leftist allies took the city of Wuhan amid much popular mobilization and fanfare. Allied with a number of Chinese Communists and advised by Soviet agent Mikhail Borodin, Wang declared the national government as having moved to Wuhan. In 1927, when he was setting up the Nationalist government in Nanjing, he was preoccupied with "the elevation of our leader Dr. Sun Yat-sen to the rank of 'Father of our Chinese Republic'. Dr. Sun worked for 40 years to lead our people in the Nationalist cause, and we cannot allow any other personality to usurp this honored position". He asked Chen Guofu to purchase a photograph that had been taken in Japan c. 1895 or 1898. It showed members of the Revive China Society with Yeung Ku-wan as president, in the place of honor, and Sun, as secretary, on the back row, along with members of the Japanese Chapter of the Revive China Society. When told that it was not for sale, Chiang offered a million dollars to recover the photo and its negative, "The party must have this picture and the negative at any price. They must be destroyed as soon as possible. It would be embarrassing to have our Father of the Chinese Republic shown in a subordinate position". On 12 April 1927, Chiang carried out a purge of thousands of suspected Communists and dissidents in Shanghai, and began large-scale massacres across the country collectively known as the "White Terror". During April, more than 12,000 people were killed in Shanghai. The killings drove most Communists from urban cities and into the rural countryside, where the KMT was less powerful. In the year after April 1927, over 300,000 people died across China in the anti-communist suppression campaigns, executed by the KMT. One of the most famous quotes from Chiang (during that time) was, that he would rather mistakenly kill 1,000 innocent people, than allow one Communist to escape. Some estimates claim the White Terror in China took millions of lives, most of them in rural areas. No concrete number can be verified. Chiang allowed Soviet agent and advisor Mikhail Borodin and Soviet general Vasily Blücher (Galens) to "escape" to safety after the purge. The NRA formed by the KMT swept through southern and central China until it was checked in Shandong, where confrontations with the Japanese garrison escalated into armed conflict. The conflicts were collectively known as the Jinan incident of 1928. Now with an established national government in Nanjing, and supported by conservative allies including Hu Hanmin, Chiang's expulsion of the Communists and their Soviet advisers led to the beginning of the Chinese Civil War. Wang Jingwei's National Government was weak militarily, and was soon ended by Chiang with the support of a local warlord (Li Zongren of Guangxi). Eventually, Wang and his leftist party surrendered to Chiang and joined him in Nanjing. However, the cracks between Chiang and Hu's traditionally Right-Wing KMT faction, the Western Hills Group, began to show soon after the cleansing against the communists, and Chiang later imprisoned Hu. Though Chiang had consolidated the power of the KMT in Nanjing, it was still necessary to capture Beijing to claim the legitimacy needed for international recognition. Beijing was taken in June 1928, from an alliance of the warlords Feng Yuxiang and Yan Xishan. Yan Xishan moved in and captured Beiping on behalf of his new allegiance after the death of Zhang Zuolin in 1928. His successor, Zhang Xueliang, accepted the authority of the KMT leadership, and the Northern Expedition officially concluded, completing Chiang's nominal unification of China and ending the Warlord Era. After the Northern Expedition ended in 1928, Yan, Feng, Li Zongren and Zhang Fakui broke off relations with Chiang shortly after a demilitarization conference in 1929, and together they formed an anti-Chiang coalition to openly challenge the legitimacy of the Nanjing government. In the Central Plains War, they were defeated. Chiang made great efforts to gain recognition as the official successor of Sun Yat-sen. In a pairing of great political significance, Chiang was Sun's brother-in-law. He had married Soong Mei-ling, the younger sister of Soong Ching-ling, Sun's widow, on 1 December 1927. Originally rebuffed in the early 1920s, Chiang managed to ingratiate himself to some degree with Soong Mei-ling's mother by first divorcing his wife and concubines and promising to sincerely study the precepts of Christianity. He read the copy of the Bible that May-ling had given him twice before making up his mind to become a Christian, and three years after his marriage he was baptized in the Soong's Methodist church. Although some observers felt that he adopted Christianity as a political move, studies of his recently opened diaries suggest that his faith was strong and sincere and that he felt that Christianity reinforced Confucian moral teachings. Upon reaching Beijing, Chiang paid homage to Sun Yat-sen and had his body moved to the new capital of Nanjing to be enshrined in a mausoleum, the Sun Yat-sen Mausoleum. In the West and in the Soviet Union, Chiang Kai-shek was known as the "Red General". Movie theaters in the Soviet Union showed newsreels and clips of Chiang. At Moscow, Sun Yat-sen University portraits of Chiang were hung on the walls; and, in the Soviet May Day parades that year, Chiang's portrait was to be carried along with the portraits of Karl Marx, Vladimir Lenin, Joseph Stalin, and other Communist leaders. The United States consulate and other Westerners in Shanghai were concerned about the approach of "Red General" Chiang as his army was seizing control of large areas of the country in the Northern Expedition. Having gained control of China, Chiang's party remained surrounded by defeated warlords who remained relatively autonomous within their own regions. On 10 October 1928, Chiang was named director of the State Council, the equivalent to President of the country, in addition to his other titles. As with his predecessor Sun Yat-sen, the Western media dubbed him "generalissimo". According to Sun Yat-sen's plans, the KMT was to rebuild China in three steps: military rule, political tutelage, and constitutional rule. The ultimate goal of the KMT revolution was democracy, which was not considered to be feasible in China's fragmented state. Since the KMT had completed the first step of revolution through seizure of power in 1928, Chiang's rule thus began a period of what his party considered to be "political tutelage" in Sun Yat-sen's name. During this so-called Republican Era, many features of a modern, functional Chinese state emerged and developed. From 1928 to 1937, known as the Nanjing decade, various aspects of foreign imperialism, concessions and privileges in China were moderated by diplomacy. The government acted to modernize the legal and penal systems and attempted to stabilize prices, amortize debts, reform the banking and currency systems, build railroads and highways, improve public health facilities, legislate against traffic in narcotics, and augment industrial and agricultural production. Efforts were made to improve education standards, and the national academy of sciences, Academia Sinica, was founded. In an effort to unify Chinese society, the New Life Movement was launched to encourage Confucian moral values and personal discipline. Guoyu ("national language") was promoted as the official language, and the establishment of communications facilities (including radio) was used to encourage a sense of Chinese nationalism in a way that had not been possible when the nation lacked an effective central government. Under that context, the Chinese Rural Reconstruction Movement was implemented by some social activists who graduated as professors of the United States with tangible but limited progress in modernizing the tax, infrastructural, economic, cultural, and educational equipment and the mechanisms of rural regions. The social activists actively co-ordinated with the local governments in the towns and villages since the early 1930s. However, the policy was subsequently neglected and canceled by Chiang's government because of rampant wars and the lack of resources after the Japanese War and the civil war. Despite being a conservative, Chiang supported modernization policies such as scientific advancement, universal education, and women's rights. The Kuomintang supported women's suffrage and education and the abolition of polygamy and foot binding. Under Chiang's leadership, the Republic of China government also enacted a women's quota in the parliament, with reserved seats for women. During the Nanjing Decade, average Chinese citizens received education that they had been denied by the dynasties. That increased the literacy rate across China and also promoted the ideals of Tridemism of democracy, republicanism, science, constitutionalism, and Chinese nationalism based on the Dang Guo of the KMT. Any successes that the Nationalists achieved, however, were met with constant political and military upheavals. Many of the urban areas were now under the control of the KMT, but much of the countryside remained under the influence of weakened-but -undefeated warlords, landlords, and Communists. Chiang often resolved issues of warlord obstinacy through military action, but such action was costly in terms of men and material. The Central Plains War alone nearly bankrupted the Nationalist government and caused almost 250,000 casualties on both sides. In 1931, Hu Hanmin, an old supporter of Chiang, publicly voiced a popular concern that Chiang's position as both premier and president flew in the face of the democratic ideals of the Nationalist government. Chiang had Hu put under house arrest, but Hu was released after national condemnation. Hu then left Nanjing and supported a rival government in Canton. The split resulted in a military conflict between Hu's Guangdong government and Chiang's Nationalist government. Throughout his rule, complete eradication of the Communists remained Chiang's dream. After he had assembled his forces in Jiangxi, Chiang led his armies against the newly established Chinese Soviet Republic. With help from foreign military advisers such as Max Bauer and Alexander von Falkenhausen, Chiang's Fifth Campaign finally surrounded the Chinese Red Army in 1934. The Communists, tipped off that a Nationalist offensive was imminent, retreated in the Long March during which Mao rose from a mere military official to the most influential leader of the Chinese Communist Party. Some academics and historians have classified Chiang's rule as fascist. The New Life Movement, initiated by Chiang, was based upon Confucianism mixed with Christianity, nationalism, and authoritarianism that have some similarities to fascism. Frederic Wakeman argued that the New Life Movement was "Confucian fascism." Chiang also sponsored the creation of the Blue Shirts Society, in conscious imitation of the Blackshirts in the Italian Fascist Party and the Sturmabteilung of the Nazi Party. Its ideology was to expel foreign (Japanese and Western) imperialists from China and to crush communism. Close ties with Nazi Germany also gave the Nationalist government access to German military and economic assistance during the mid-1930s. Mao once derogatorily compared Chiang to Adolf Hitler, referring to him as the "Führer of China." However, Chiang repeatedly attacked his enemies such as the Empire of Japan as fascistic and ultra-militaristic. Sino-German relations rapidly deteriorated as Germany grew closer to Japan and almost completely broke down when Japan launched a full-scale invasion of China in 1937, which Germany failed to mediate. However, China did not declare war on Germany, Italy, or even Japan until after the attack on Pearl Harbor in December 1941. Chinese Communists and many conservative anti-communist writers have argued that Chiang was pro-capitalist based on the alliance thesis (the alliance between Chiang and the capitalists to purge the communist and the leftist elements in Shanghai, as well as in the resulting civil war). However, Chiang also antagonized the capitalists of Shanghai by often attacking them and confiscating their capital and assets for government use even while he denounced and fought against communists. Critics have called that "bureaucratic capitalism." Historian Parks M. Coble argues that the phrase "bureaucratic capitalism" is too simplistic to adequately characterize this phenomenon. Instead, he says, the regime weakened all social forces so that the government could pursue policies without being responsible nor responsive to any outside political groups. By defeating any potential challenge to its power, government officials could amass sizable fortunes. With that motive, Chiang cracked down pro-communist worker and peasant organizations, as well as rich Shanghai capitalists. Chiang also continued the anti-capitalist rhetoric of Sun Yat-sen and directed the Kuomintang media to attack the capitalists and capitalism openly. He supported government-controlled industries instead. Coble says that the rhetoric had no impact on governmental policy and that its use was to prevent the capitalists from claiming legitimacy within the party or society and to control them and their wealth. Authority within the Nationalist government ultimately lay with Chiang. All major policy changes on military, diplomatic, or economic issues required his approval. According to historian Odd Arne Westad, "no other leader within the [KMT] had the authority to force through even the simplest decisions. The practical power of high-ranking officials like ministers or the head of the Executive Yuan was more closely tied to their relationship with Chiang than with the formal authority of their position. Chiang created multiple layers of power in his administration which he sometimes played off each other to prevent individuals or cliques from gathering power that could oppose his authority. Contrary to the critique that Chiang was highly corrupt, he was not involved in corruption himself. However his wife, Soong Mei-ling ignored her family's involvement in corruption. The Soong family embezzled $20 million of the course of the 1930s and the 1940s when the Nationalist government's revenues were less than $30 million per year. The Soong family's eldest son, T.V. Soong, was the Chinese premier finance minister, and the eldest daughter, Soong Ai-ling, was the wife of Kung Hsiang-hsi, the wealthiest man in China. The second daughter, Soong Ching-ling, was the wife of Sun Yat-sen, China's founding father. The youngest daughter, Soong Mei-ling, married Chiang in 1927, and following the marriage, both families became intimately connected, which created the "Soong dynasty" and the "Four Families." However, Soong was also credited for her campaign for women's rights in China, including her attempts to improve the education, culture, and social benefits of Chinese women. Critics have said that the "Four Families" monopolized the regime and looted it. The US sent considerable aid to the Nationalist government but soon realized the widespread corruption. Military supplies that were sent appeared on the black market. Significant sums of money that had been transmitted through T. V. Soong, China's finance minister, soon disappeared. President Truman famously referred to the Nationalist leaders, "They're thieves, every damn one of them." He also said, "They stole $750 million out of the billions that we sent to Chiang. They stole it, and it's invested in real estate down in São Paolo and some right here in New York." Soong Mei-ling and Soong Ai-ling lived luxurious lifestyles and held millions in property, clothes, art, and jewelry. Soong Ai-ling and Soong Mei-ling were also the two richest women in China. Despite living a luxurious life for almost her entire life, Soong Mei-ling left only a $120,000 inheritance, and the reason is that according to her niece, that she donated most of her wealth when she was still alive. Chiang, requiring support, tolerated corruption with people in his inner circles, as well as high-ranking nationalist officials, but not of lower-ranking officers. In 1934, he ordered seven military officers who embezzled state property to be shot. In another case, several division commanders pleaded with Chiang to pardon a criminal officer, but as soon as the division commanders had left, Chiang ordered him shot. The deputy editor and chief reporter at the Central Daily News, Lu Keng, made headline international news by exposing the corruption of two senior officials, Kong Xiangxi (H. H. Kung) T.V. Soong. Chiang then ordered a thorough investigation of the Central Daily News to find the source. However, Lu, risked execution by refusing to comply and protecting his journalists. Chiang wanting to avoid an international response and so jailed Lu instead. Chiang realized the widespread problems that corruption was creating and so he undertook several anti-corruption campaigns before and after World War II with varying success. Before the war, both campaigns, the Nanjing Decade Cleanup of 1927–1930 and the Wartime Reform Movement of 1944–1947, failed. After the World War II and the Civil War, both campaigns, the Kuomintang Reconstruction of 1950–1952 and the Governmental Rejuvenation of 1969–1973, succeeded. Chiang, who viewed all of the foreign great powers with suspicion, wrote in a letter that they "all have it in their minds to promote the interests of their own respective countries at the cost of other nations" and saw it as hypocritical for any of them to condemn one another's foreign policy. He used diplomatic persuasion on the United States, Nazi Germany, and the Soviet Union to regain lost Chinese territories, as he viewed all foreign powers as imperialists that were attempting to exploit China. During April 1931, Chiang Kai-shek attended a national leadership conference in Nanjing with Zhang Xueliang and General Ma Fuxiang during which Chiang and Zhang dauntlessly upheld that Manchuria was part of China in the face of the Japanese invasion. After the Japanese invasion of Manchuria in 1931, Chiang resigned as Chairman of the National Government. He returned shortly afterward and adopted the slogan "first internal pacification, then external resistance." However, his policy of avoiding a frontal war against Japan and prioritizing anti-communist suppression was widely unpopular and provoked nationwide protests. In 1932, while Chiang was seeking first to defeat the Communists, Japan launched an advance on Shanghai and bombarded Nanjing. That disrupted Chiang's offensives against the Communists for a time, but it was the northern factions of Hu Hanmin's Guangdong government (notably the 19th Route Army) that primarily led the offensive against the Japanese during the skirmish. Brought into the NRA immediately after the battle, the 19th Route Army's career under Chiang would be cut short by being disbanded for demonstrating socialist tendencies. In December 1936, Chiang flew to Xi'an to co-ordinate a major assault on the Red Army and the CPC, which had retreated into Yan'an. However, Chiang's allied commander Zhang Xueliang, whose forces were used in his attack and whose homeland of Manchuria had been recently invaded by the Japanese, did not support the attack on the Communists. On 12 December, Zhang and several other Nationalist generals, headed by Yang Hucheng of Shaanxi kidnapped Chiang for two weeks in what is known as the Xi'an Incident. They forced Chiang into making a "Second United Front" with the Communists against Japan. After releasing Chiang and returning to Nanjing with him, Zhang was placed under house arrest, and the generals who had assisted him were executed. The Second United Front had a commitment by Chiang that was nominal at best and was all but dissolved in 1941. The Second Sino-Japanese War broke out in July 1937, and in August, Chiang sent 600,000 of his best-trained and equipped soldiers to defend Shanghai. With over 200,000 Chinese casualties, Chiang lost the political cream of his Whampoa-trained officers. Although Chiang lost militarily, the battle dispelled Japan's claims that it could conquer China in three months and also demonstrated to the Western powers that the Chinese would continue the fight. By December, the capital city of Nanjing had fallen to the Japanese resulting in the Nanjing Massacre. Chiang moved the government inland first to Wuhan and later to Chongqing. Having lost most of China's economic and industrial centers, Chiang withdrew into the hinterlands, stretched the Japanese supply lines, and bogged down Japanese soldiers in the vast Chinese interior. As part of a policy of protracted resistance, Chiang authorized the use of scorched-earth tactics, which resulted in many civilian deaths. During the Nationalists' retreat from Zhengzhou, the dams around the city were deliberately destroyed by the National Revolutionary Army to delay the Japanese advance, and the subsequent 1938 Yellow River flood killed 800,000 to one million people. Four million Chinese were left homeless. Chiang and the KMT were slow to provide disaster relief. After heavy fighting, the Japanese occupied Wuhan in the fall of 1938, and the Nationalists retreated farther inland to Chongqing. En route to Chongqing, the Nationalist Army intentionally started the Changsha Fire as a part of its scorched-earth policy. The fire destroyed much of the city, killed 20,000 civilians, and left hundreds of thousands of people homeless. An organizational error (it was claimed) caused the fire to be started without any warning to the residents of the city. The Nationalists eventually blamed three local commanders for the fire and executed them. Newspapers across China blamed the fire on (non-KMT) arsonists, but the blaze contributed to a nationwide loss of support for the KMT. In 1939, the Muslim leaders Isa Yusuf Alptekin and Ma Fuliang were sent by Chiang to several Middle Eastern countries, including Egypt, Turkey, and Syria, to gain support for the war against Japan and to express his support for Muslims. The Japanese, controlling the puppet state of Manchukuo and much of China's eastern seaboard, appointed Wang Jingwei as a puppet ruler of the occupied Chinese territories around Nanjing. Wang named himself President of the Executive Yuan and chairman, and he led a surprisingly large minority of anti-Chiang and anti-Communist Chinese against his old comrades. He died in 1944, a year before the end of World War II. The Hui Xidaotang sect pledged allegiance to the Kuomintang after the party's rise to power, and Hui general Bai Chongxi acquainted Chiang with the Xidaotang Juaozhu Ma Mingren in 1941 in Chongqing. In 1942 Chiang went on tour in northwestern China in Xinjiang, Gansu, Ningxia, Shaanxi, and Qinghai, where he met the Muslim Generals Ma Buqing and Ma Bufang. He also met the Muslim Generals Ma Hongbin and Ma Hongkui separately. A border crisis erupted with Tibet in 1942. Under orders from Chiang, Ma Bufang repaired Yushu Airport to prevent Tibetan separatists from seeking independence. Chiang also ordered Ma Bufang to put his Muslim soldiers on alert for an invasion of Tibet in 1942. Ma Bufang complied and moved several thousand troops to the Tibetan border. Chiang also threatened the Tibetans with aerial bombardment if they worked with the Japanese. Ma Bufang attacked the Tibetan Buddhist Tsang monastery in 1941. He also constantly attacked the Labrang Monastery. After the attack on Pearl Harbor and the opening of the Pacific War, China became one of the Allies. During and after World War II, Chiang and his American-educated wife, Soong Mei-ling, known in the United States as "Madame Chiang", held the support of the American "China Lobby", which saw in them the hope of a Christian and democratic China. Chiang was even named the Supreme Commander of Allied forces in the China war zone. He was appointed Knight Grand Cross of the Order of the Bath in 1942. General Joseph Stilwell, an American military advisor to Chiang during World War II, strongly criticized Chiang and his generals for what Stilwell saw as their incompetence and corruption. In 1944, the United States Army Air Corps commenced Operation Matterhorn to bomb Japan's steel industry from bases to be constructed in mainland China. That was meant to fulfill US President Franklin D. Roosevelt's promise to Chiang to begin bombing operations against Japan by November 1944. However, Chiang's subordinates refused to take air base construction seriously until enough capital had been delivered to permit embezzlement on a massive scale. Stilwell estimated that at least half of the $100 million spent on construction of air bases was embezzled by Nationalist party officials. The poor performance of Nationalist forces during the Japanese Ichigo campaign contributed to the view that Chiang was incompetent. Chiang argued that the United States, and Stillwell in particular, were at fault for the failure because they had moved too many Chinese troops into the Burma campaign. After the Japanese surrender, Chiang had to rely on the assistance of the United States in order to transport his troops to regain control of occupied areas. Non-Chinese found the behavior of these troops and accompanying officials as undercutting Nationalist legitimacy, as Nationalist forces engaged in a "botched liberation" characterized by corruption, looting, and inefficiency. Chiang tried to balance the influence of the Soviets and the Americans in China during the war. He first told the Americans that they would be welcome in talks between the Soviet Union and China and then secretly told the Soviets that the Americans were unimportant and that their opinions would not be considered. Chiang also used American support and military power in China against Soviet ambitions to dominate the talks. That stopped the Soviets from taking full advantage of the situation in China by the threat of American military action against them. Chiang's Nationalist government made laws on abortion in China more restrictive during the Second Sino-Japanese War. In 1945, Chiang adopted a eugenic population policy that was intended to promote hybrid vigor by encouraging intermarriage between whites and Chinese to combine European fair skin with superior Chinese intelligence. Although adopted, the policy was never successfully implemented. President Roosevelt, through General Stilwell, privately made it clear that he preferred for the French not to reacquire French Indochina (now Vietnam, Cambodia and Laos) after the war was over. Roosevelt offered Chiang control of all of Indochina. It was said that Chiang replied, "Under no circumstances!" After the war, 200,000 Chinese troops under General Lu Han were sent by Chiang to northern Indochina (north of the 16th parallel) to accept the surrender of Japanese occupying forces there, and the Chinese forces remained in Indochina until 1946, when the French returned. The Chinese used the VNQDD, the Vietnamese branch of the Kuomintang, to increase their influence in Indochina and to put pressure on their opponents. Chiang threatened the French with war in response to maneuvering by the French and Ho Chi Minh's forces against each other and forced them to come to a peace agreement. In February 1946, he also forced the French to surrender all of their concessions in China and to renounce their extraterritorial privileges in exchange for the Chinese withdrawing from northern Indochina and allowing French troops to reoccupy the region. After France's agreement to those demands, 20,000 French soldiers landed in Haiphong, North Vietnam, on March 6, 1946, under the leadership of general Philippe Leclerc de Hauteclocque, followed by the withdrawal of Chinese troops which began in March 1946. According to Republic of China's notes of a dinner meeting during the Cairo Conference in 1943, Roosevelt asked Chiang whether China desired the Ryukyu islands as territories restored from Japan. Chiang said he would be agreeable to joint occupation and administration by China and the United States. Because of Chiang's focus on his communist opponents, he allowed some Japanese forces and forces from the Japanese puppet regimes to remain on duty in occupied areas in an effort to prevent the communists from accepting their surrender. American troops and weapons soon bolstered the Nationalist forces, which allowed them to reclaim the cities. The countryside, however, remained largely under Communist control. Chiang implemented his war-time phrase "repay evil with good" and made a huge effort to protect elements of the Japanese invading army. In 1949, a Nationalist court acquitted General Okamura Yasuji, the chief commander of Japanese forces in China, of alleged war crimes, retaining him as an advisor. Nationalist China repeatedly intervened to protect Okamura from repeated American requests to testify at the Tokyo war crimes trial. Many top Nationalist generals, including Chiang, had studied and trained in Japan before the Nationalists had returned to the mainland in the 1920s and maintained close personal friendships with top Japanese officers. The Japanese general in charge of all forces in China, General Okamura had personally trained officers who later became generals in Chiang's staff. Reportedly, Chiang seriously considered accepting this offer but declined only because he knew that the United States would certainly be outraged by the gesture. Even so, armed Japanese troops remained in China well into 1947, with some non-commissioned officers finding their way into the Nationalist officer corps. The Japanese in China came to regard Chiang as a magnanimous figure to whom many of them owed their lives and livelihoods; that fact was attested by both Nationalist and Communist sources. Chiang did not de-mobilize his troops after the defeat of the Japanese, instead remaining on a war footing to prepare for the resumption of civil war against the Communists. This further strained the economy of Nationalist era China, worsening deficits. A significant body of evidence suggests that much of the Nationalist military budget in this period was wasted. One factor in military budget waste included that troop counts were inflated above actual head counts and that officers embezzled the salaries of the non-existent soldiers. Another was the power of military commanders over local branches of the Bank of China, which they could require to provide currency outside of the normal budget process. Although Chiang had achieved status abroad as a world leader, his government deteriorated as the result of corruption and hyperinflation. In his diary in June 1948, Chiang wrote that the KMT had failed not because of external enemies but because of rot from within. The war had severely weakened the Nationalists, and the Communists were strengthened by their popular land reform policies and by a rural population that supported and trusted them. The Nationalists initially had superiority in arms and men, but their lack of popularity, infiltration by Communist agents, low morale, and disorganization soon allowed the Communists to gain the upper hand in the civil war. After World War II, the United States encouraged peace talks between Chiang and the Communist leader, Mao Zedong, in Chongqing. Concerns about widespread and well-documented corruption in Chiang's government throughout his rule made the US government limit aid to Chiang for much of the period of 1946 to 1948 despite the fighting against Mao's Red Army. Alleged infiltration of the US government by CCP agents may have also played a role in the suspension of American aid. Chiang's right-hand man, the secret police chief Dai Li, was anti-American and anti-Communist and a self-declared fascist. Dai ordered Kuomintang agents to spy on American officers. Earlier, Dai had been involved with the Blue Shirts Society, a fascist-inspired paramilitary group within the Kuomintang that wanted to expel Western and Japanese imperialists, crush the Communists, and eliminate feudalism. Dai Li died in a plane crash, which some suspect to be an assassination orchestrated by Chiang; however, the assassination was also rumoured to have been arranged by the American Office of Strategic Services because of Dai's anti-Americanism and since it happened on an American plane. A new constitution was promulgated in 1947, and Chiang was elected by the National Assembly as the first President of the Republic of China on 20 May 1948. That marked the beginning of what was termed the "democratic constitutional government" period by the KMT political orthodoxy, but the Communists refused to recognize the new Constitution, and its government as legitimate. Chiang resigned as president on 21 January 1949, as Nationalist forces suffered terrible losses and defections to the Communists. After Chiang's resignation, vice-president Li Zongren became China's acting president. Shortly after Chiang's resignation, the Communists halted their advances and attempted to negotiate the Nationalists' virtual surrender. Li tried to negotiate milder terms to end the civil war but had no success. When it became clear that Li was unlikely to accept Mao's terms, the Communists issued an ultimatum in April 1949 that warned that they would resume their attacks if Li did not agree within five days. Li refused. Li's attempts to carry out his policies faced varying degrees of opposition from Chiang's supporters and were generally unsuccessful. Taylor has noted that Chiang had a superstitious belief in holding Manchuria. After the Nationalist military defeat in the province, Chiang lost faith in winning the war and started to prepare for the retreat to Taiwan. Chiang especially antagonized Li by taking possession of and moving to Taiwan US$200 million of gold and US dollars that belonged to the central government. Li desperately needed them to cover the government's soaring expenses. When the Communists captured the Nationalist capital of Nanjing in April 1949, Li refused to accompany the central government as it fled to Guangdong and instead expressed his dissatisfaction with Chiang by retiring to Guangxi. The former warlord Yan Xishan, who had fled to Nanjing only one month earlier, quickly insinuated himself within the Li-Chiang rivalry and attempted to have Li and Chiang reconcile their differences in the effort to resist the Communists. At Chiang's request, Yan visited Li to convince Li not to withdraw from public life. Yan broke down in tears while he talked of the loss of his home province of Shanxi to the Communists, and he warned Li that the Nationalist cause was doomed unless Li went to Guangdong. Li agreed to return if Chiang surrendered most of the gold and US dollars in his possession that belonged to the central government, and Chiang stopped overriding Li's authority. After Yan communicated those demands and Chiang agreed to comply with them, Li departed for Guangdong. In Guangdong, Li attempted to create a new government composed of both supporters and opponents of Chiang. Li's first choice of premier was Chu Cheng, a veteran member of the Kuomintang who had been virtually driven into exile for his strong opposition to Chiang. After the Legislative Yuan jas rejected Chu, Li was obliged to choose Yan Xishan instead. By then, Yan was well known for his adaptability, and Chiang welcomed his appointment. The conflict between Chiang and Li persisted. Although he had agreed to do so as a prerequisite of Li's return, Chiang refused to surrender more than a fraction of the wealth that he had sent to Taiwan. Without being backed by gold or foreign currency, the money that was issued by Li and Yan quickly declined in value until it became virtually worthless. Although he did not hold a formal executive position in the government, Chiang continued to issue orders to the army, and many officers continued to obey Chiang, rather than Li. The inability of Li to co-ordinate KMT military forces led him to put into effect a plan of defense that he had contemplated in 1948. Instead of attempting to defend all of southern China, Li ordered what remained of the Nationalist armies to withdraw to Guangxi and Guangdong. He hoped that he could concentrate all available defenses on the smaller area, which would be more easily defensible. The object of Li's strategy was to maintain a foothold on the Chinese mainland in the hope that the United States would eventually be compelled to enter the war in China on the Nationalist side. Chiang opposed Li's plan of defense because it would have placed most of the troops who were still loyal to Chiang under the control of Li and Chiang's other opponents in the central government. To overcome Chiang's intransigence Li began ousting Chiang's supporters within the central government. Yan Xishan continued in his attempts to work with both sides, which created the impression among Li's supporters that he was a stooge of Chiang, and those who supported Chiang began to bitterly resent Yan for his willingness to work with Li. Because of the rivalry between Chiang and Li, Chiang refused to allow Nationalist troops loyal to him to aid in the defense of Guangxi and Canton. That let Communist forces occupy Canton in October 1949. After Canton fell to the Communists, Chiang relocated the government to Chongqing, and Li effectively surrendered his powers and flew to New York for treatment of his chronic duodenum illness at the Hospital of Columbia University. Li visited President Truman, and denounced Chiang as a dictator and an usurper. Li vowed that he would "return to crush" Chiang once he returned to China. Li remained in exile and did not return to Taiwan. In the early morning of 10 December 1949, Communist troops laid siege to Chengdu, the last KMT-controlled city in mainland China, where Chiang Kai-shek and his son Chiang Ching-kuo directed the defense at the Chengtu Central Military Academy. Flying out of Chengdu Fenghuangshan Airport, father and son were evacuated to Taiwan via Guangdong on the aircraft May-ling and arrived the same day. Chiang Kai-shek would never return to the mainland. Historian Odd Arne Westad says the Communists won the Civil War because they made fewer military mistakes than Chiang had. Also, his search for a powerful centralized government made Chiang antagonize too many interest groups in China. Furthermore, his party was weakened by the war against Japan. Meanwhile, the Communists told different groups, such as peasants, exactly what they wanted to hear and cloaked themselves in the cover of Chinese nationalism. Chiang did not reassume the presidency until 1 March 1950. In January 1952, Chiang commanded the Control Yuan, now in Taiwan, to impeach Li in the "Case of Li Zongren's Failure to carry out Duties due to Illegal Conduct" (李宗仁違法失職案). Chiang relieved Li of the position as vice-president of the National Assembly in March 1954. Chiang moved the government to Taipei, Taiwan, where he resumed his duties as president on 1 March 1950. Chiang was re-elected by the National Assembly to be the President of the Republic of China on 20 May 1954, and again in 1960, 1966, and 1972. He continued to claim sovereignty over all of China, including the territories held by his government and the People's Republic, as well as territory the latter ceded to foreign governments, such as Tuva and Outer Mongolia. In the context of the Cold War, most of the Western world recognized that position, and the ROC represented China in the United Nations and other international organizations until the 1970s. During his presidency on Taiwan, Chiang continued making preparations to take back mainland China. He developed the JROTC army to prepare for an invasion of the mainland and to defend Taiwan in case of an attack by the Communist forces. He also financed armed groups in mainland China, such as Muslim soldiers of the ROC Army Who had been left in Yunnan under Li Mi and continued to fight. It was not until the 1980s that those troops were finally airlifted to Taiwan. He promoted the Uyghur Yulbars Khan to governor during the Islamic insurgency on the mainland for resisting the Communists even though the government had already evacuated to Taiwan. He planned an invasion of the mainland in 1962. In the 1950s, Chiang's airplanes dropped supplies to Kuomintang Muslim insurgents in Qinghai, in the traditional Tibetan area of Amdo. Despite an ostensibly democratic constitution, the government under Chiang was a de facto one-party state, consisting almost completely of mainlanders; the "Temporary Provisions Effective During the Period of Communist Rebellion" greatly enhanced the executive's powers, and the goal of retaking mainland China allowed the KMT to maintain a monopoly on power and to prohibit real parliamentary opposition. The government's official line for the martial law provisions stemmed from the claim that emergency provisions were necessary since the Communists and the Nationalists were still in a state of war. Seeking to promote Chinese nationalism, Chiang's government actively ignored and suppressed local cultural expression and even forbade the use of local languages in mass media broadcasts or during class sessions. As a result of Taiwan's anti-government uprising in 1947, known as the February 28 incident, the KMT-led political repression resulted in the death or the disappearance of up to 30,000 Taiwanese intellectuals, activists, and people suspected of opposition to the KMT. The first decades after the Nationalists had moved the seat of government to the province of Taiwan are associated with the organized effort to resist Communism, which was known as the "White Terror"; about 140,000 Taiwanese were imprisoned for their real or perceived opposition to the Kuomintang. Most of those prosecuted were labeled by the Kuomintang as "bandit spies" (匪諜), meaning spies for Chinese Communists, and punished as such or "Taiwanese Separatists" (台獨分子). Under the pretext that new elections could not be held in Communist-occupied constituencies, the National Assembly, Legislative Yuan, and Control Yuan members held their posts indefinitely. The Temporary Provisions also allowed Chiang to remain as president beyond the two-term limit in the Constitution. He was re-elected by the National Assembly as president four times: in 1954, 1960, 1966, and 1972. Believing that corruption and the lack of morals were key reasons that the KMT had lost mainland China to the Communists, Chiang attempted to purge corruption by dismissing members of the KMT who were accused of graft. Some major figures in the previous mainland Chinese government, such as Chiang's brothers-in-law H. H. Kung and T.V. Soong, exiled themselves to the United States. Although politically authoritarian and, to some extent, dominated by government-owned industries, Chiang's new Taiwanese state also encouraged economic development, especially in the export sector. A popular sweeping Land Reform Act, as well as American foreign aid during the 1950s, laid the foundation for Taiwan's economic success to become one of the Four Asian Tigers. After retreating to Taiwan, Chiang learned from his mistakes and failures in the mainland and blamed them for failing to pursue Sun Yat-sen's ideals of Tridemism and welfarism. Chiang's land reform more than doubled the land ownership of Taiwanese farmers. It removed the rent burdens on them, with former landowners using the government compensation to become the new capitalist class. He promoted a mixed economy of state and private ownership with economic planning. Chiang also promoted a nine-year free education and the importance of science in Taiwanese education and values. Those measures generated great success, with consistent and strong growth and the stabilization of inflation. After the government of the Republic of China had moved to Taiwan, Chiang Kai-shek's economic policy turned towards to economic liberalism and used Sho-Chieh Tsiang and other liberal economists to promote economic liberalization reforms in Taiwan. However, Taylor has noted that the developmental model of Chiangism in Taiwan still had elements of socialism, and the Gini index of Taiwan was around 0.28 by the 1970s, which was lower than the relatively-egalitarian West Germany. ROC (Taiwan) was one of the most equal countries in the pro-western bloc. Those in the lower 40% of income doubled their share to 22% of the total income, with the upper 20% shrinking their share from 61% to 39%, from the time of Japanese rule. The Chiangist economic model can be seen as a form of dirigisme, with the state playing a crucial role in directing the market economy. Small businesses and state-owned enterprises in Taiwan flourished under the economic model, but the economy did not see the emergence of corporate monopolies, unlike in most other major capitalist countries. After the democratization of Taiwan, it began to slowly drift away from the Chiangist economic policy to embrace a more free market system, as part of the economic globalization process under the context of neoliberalism. Chiang had the personal power to review the rulings of all military tribunals, which during the martial law period tried civilians as well. In 1950, Lin Pang-chun and two other men were arrested on charges of financial crimes and sentenced to 3–10 years in prison. Chiang reviewed the sentences of all three and ordered them executed instead. In 1954, the Changhua monk Kao Chih-te and two others were sentenced to 12 years in prison for providing aid to accused communists. Chiang sentenced them to death after he had reviewed the case. That control over the decision of military tribunals violated the ROC constitution. After Chiang's death, the next president, his son, Chiang Ching-kuo, and Chiang Ching-kuo's successor, Lee Teng-hui, a native Taiwanese, would in the 1980s and 1990s increase native Taiwanese representation in the government and loosen the many authoritarian controls of the early era of ROC control in Taiwan, paving way for the democratization process. In 1971, the former Australian opposition leader Gough Whitlam became Prime Minister in 1972, and swiftly relocated the Australian mission from Taipei to Beijing, visited Japan. After meeting with Japanese Prime Minister Eisaku Sato Whitlam observed that the reason that Japan was hesitant to withdraw recognition from the Nationalist government was "the presence of a treaty between the Japanese government and that of Chiang Kai-shek." Sato explained that the continued recognition of Japan towards the Nationalist government was largely because of the personal relationship that various members of the Japanese government felt towards Chiang. This relationship was rooted largely in the generous and lenient treatment of Japanese prisoners-of-war by the Nationalist government in the years immediately after the Japanese surrender in 1945, and was felt especially strongly as a bond of personal obligation by the most senior members who were in power. Although Japan recognized the People's Republic in 1972, shortly after Kakuei Tanaka had succeeded Sato as Prime Minister of Japan, the memory of the relationship was strong enough to be reported by The New York Times (15 April 1978) as a significant factor inhibiting trade between Japan and the mainland. There is speculation that a clash between Communist forces and a Japanese warship in 1978 was caused by Chinese anger by Japanese Prime Minister Takeo Fukuda attending Chiang's funeral. Historically, Japan's attempts to normalize its relationship with the People's Republic were met with accusations of ingratitude in Taiwan. Chiang was suspicious that covert operatives of the United States were plotting a coup against him. In 1950, Chiang Ching-kuo became director of the secret police (Bureau of Investigation and Statistics), which he remained until 1965. Chiang Kai-shek was also suspicious of politicians who were overly friendly to the United States and considered them his enemies. In 1953, seven days after surviving an assassination attempt, Wu Kuo-chen lost his position as governor of Taiwan Province to Chiang Ching-kuo. After fleeing to United States the same year, Wu became a vocal critic of Chiang's family and government. Chiang Ching-kuo, who had been educated in the Soviet Union, initiated Soviet-style military organization in the Republic of China Armed Forces. He reorganized and Sovietized the political officer corps and propagated Kuomintang ideology throughout the military. Sun Li-jen, who had been educated at the American Virginia Military Institute, opposed those practices. Chiang Ching-kuo orchestrated the controversial court-martial and arrest of General Sun Li-jen in August 1955 for plotting a coup d'état with the CIA against his father, Chiang Kai-shek, and the Kuomintang. The CIA allegedly wanted to help Sun take control of Taiwan and declare its independence. In 1975, after Chiang had come to Taiwan 26 years earlier, he died in Taipei at the age of 87. He had suffered a heart attack and pneumonia in the foregoing months and died from kidney failure aggravated with advanced heart failure on 5 April. Chiang's funeral was held on 16 April. A month of mourning was declared. The Chinese music composer Hwang Yau-tai wrote the "Chiang Kai-shek Memorial Song." In mainland China, however, Chiang's death was met with little apparent mourning, and Communist state-run newspapers gave the brief headline "Chiang Kai-shek Has Died". Chiang's body was put in a copper coffin and temporarily interred at his favorite residence in Cihu, Daxi, Taoyuan. His funeral was attended by dignitaries from many nations, including US Vice President Nelson Rockefeller, South Korean Prime Minister Kim Jong-pil, and two former Japanese prime ministers: Nobusuke Kishi and Eisaku Sato. Chiang Kai-shek Memorial Day [zh] (蔣公逝世紀念日) was established on 5 April. The memorial day was disestablished in 2007. The response by Japanese media was swift and shaped by a cult of personality around Chiang Kai-shek. Japanese conservatives had long promoted to counter the China policy and the historical narratives of their leftist pro-PRC opponents. The nationalist leader of Taiwan had been trained in Japanese military schools and shared a particular fondness for the Japanese Empire. When his son, Chiang Ching-kuo, died in 1988, he was entombed in a separate mausoleum in nearby Touliao. The hope was to have both of them buried at their birthplace in Fenghua when that would be possible. In 2004, Chiang Fang-liang, the widow of Chiang Ching-kuo, asked for both father and son to be buried at Wuzhi Mountain Military Cemetery in Xizhi, Taipei County (now New Taipei City). Chiang's ultimate funeral ceremony became a political battle between the wishes of the state and those of his family. Chiang was succeeded as president by Vice President Yen Chia-kan and as Kuomintang party ruler by his son Chiang Ching-kuo, who retired Chiang Kai-shek's title of Director-General and instead assumed the position of chairman. Yen's presidency was interim; Chiang Ching-kuo, who was the Premier, became president after the end of Yen's term three years later. Chiang's portrait hung over Tiananmen Square until 1949, when it was replaced with Mao's portrait. Portraits of Chiang were common in private homes and in public on the streets. After his death, the Chiang Kai-shek Memorial Song was written in 1988 to commemorate Chiang Kai-shek. In Cihu, there are several statues of Chiang Kai-shek. Chiang was popular among many people and dressed in plain, simple clothes, unlike contemporary Chinese warlords who dressed extravagantly. Quotes from the Quran and hadith were used by Muslims in the Kuomintang-controlled Muslim publication, the Yuehua, to justify Chiang Kai-shek's rule over China. When the Muslim general and warlord Ma Lin was interviewed, he was described as having "high admiration for and unwavering loyalty to Chiang Kai-shek". The Kuomintang used traditional Chinese religious ceremonies, and promulgated martyrdom. Kuomintang ideology subserved and promulgated the view that the souls of Party martyrs who died fighting for the Kuomintang, the revolution, and the party founder Dr. Sun Yat-sen were sent to heaven. Chiang Kai-shek believed that these martyrs witnessed events on Earth from heaven after their deaths. Unlike Sun's original Tridemist ideology that was heavily influenced by Western enlightenment theorists such as Henry George, Abraham Lincoln, Bertrand Russell, and John Stuart Mill, the traditional Chinese Confucian influence on Chiang's ideology is much stronger. Chiang rejected the Western progressive ideologies of individualism, liberalism, and the cultural aspects of Marxism. Therefore, Chiang is generally more culturally and socially conservative than Sun Yat-sen. Jay Taylor has described Chiang Kai-shek as a revolutionary nationalist and a "left-leaning Confucian-Jacobinist". When the Northern Expedition was complete, Kuomintang Generals led by Chiang Kai-shek paid tribute to Dr. Sun's soul in heaven with a sacrificial ceremony at the Xiangshan Temple in Beijing in July 1928. Among the Kuomintang Generals present were the Muslim Generals Bai Chongxi and Ma Fuxiang. Chiang Kai-shek considered both Han Chinese and all ethnic minorities of China, the Five Races Under One Union, as descendants of the Yellow Emperor, the mythical founder of the Chinese nation, and belonging to the Chinese Nation Zhonghua Minzu. He introduced this into Kuomintang ideology which was propagated into the educational system of the Republic of China. Chiang, as a Chinese nationalist and a Confucian, was against the iconoclasm of the May Fourth Movement. Motivated by his sense of nationalism, he viewed some Western ideas as foreign and believed that the great introduction of Western ideas and literature, which the May Fourth Movement promoted, was not beneficial to China. He and Sun criticized the May Fourth intellectuals as corrupting the morals of China's youth. Chiang Kai-shek once said: If when I die, I am still a dictator, I will certainly go down into the oblivion of all dictators. If, on the other hand, I succeed in establishing a truly stable foundation for a democratic government, I will live forever in every home in China. Chiang's legacy has been subjected to heated debates because of the different views held about him. For some, Chiang was a national hero who led the victorious Northern Expedition against the Beiyang warlords in 1927 and helped achieve Chinese unification. His initial image as the leader of China against Japan's invasion, both before and after the attack on Pearl Harbor, led him to be featured on the cover of Time magazine ten times. Even though China received little American aid compared to Britain and the Soviet Union, it did not fold, as Chiang called on his countrymen to fight to the "bitter end" until their ultimate victory against Japan in 1945. Some also see him as a champion of anti-communism, being a key figure during the formative years of the World Anti-Communist League. During the subsequent Cold War, he was seen as the leader who led Free China and the bulwark against a possible communist invasion. However, historian Rudolph Rummel documented that the Nationalist government under Chiang led to millions of excess deaths from calamities such as its persecution against actual or perceived communists and its conscription of soldiers, confiscation of food, and flooding of downstream regions of the Yellow River during the Second Sino-Japanese War. His government was also accused of being corrupt and allying with known criminals such as Du Yuesheng for political and financial gains, and his critics often accuse him of fascism. In Taiwan, he ruled throughout a period of martial law. Some opponents charge that Chiang's efforts in developing the island were mostly to turn it into a strong base from which to recover mainland China and that he had little regard for the Taiwanese people. Unlike Chiang's son Chiang Ching-kuo, who is respected across the political spectrum, Chiang Kai-shek's image is perceived rather negatively in Taiwan. He was rated the lowest in two opinion polls about the perception of former presidents. His popularity in Taiwan is divided along political lines, enjoying better support in the Kuomintang (KMT) while being widely unpopular among Democratic Progressive Party (DPP) voters and those who blame him for the thousands killed during the February 28 Incident and criticise his dictatorial rule. In contrast, his image has partially improved in mainland China. He had been portrayed as a villain and a "bourgeoisie reactionary lackey" who fought against the "liberation" of China by the communists, but since the 2000s, the media and popular culture have depicted him in a less negative manner. For example, many praised the 2009 movie sponsored by the Chinese Communist Party, The Founding of a Republic, for moving away from casting Chiang as 'evil' versus Mao and emphasizing instead that the contingencies of war led the communists to victory. In the context of the Second Sino-Japanese War, aspects of Chiang's trip to India, or meeting with Roosevelt and Churchill in Cairo can be viewed positively. The shift also takes into account Chiang's commitment to a unified China and his stance against Taiwanese separatism. Chiang's ancestral home in Fenghua, Zhejiang has become a museum and tourist attraction. Historian Rana Mitter notes that the displays inside were very positive about Chiang's role during the Second Sino-Japanese War. Mitter further observed that, ironically, today's China is closer to Chiang's vision than to Mao's and wrote, "One can imagine Chiang Kai-shek's ghost wandering round China today nodding in approval, while Mao's ghost follows behind him, moaning at the destruction of his vision". Liang Shuming opined that Chiang Kai-shek's "greatest contribution was to make the CCP successful. If he had been a bit more trustworthy, if his character was somewhat better, the CCP would have been unable to beat him". Some Chinese historians argue that the main determinants for Chiang's defeat were not corruption or the lack of US support, but his decision to start the civil war with 70% of government expenditures in the military, his overestimation of the Nationalist forces equipped with US arms, and the loss of popularity and morales of his soldiers. Other historians argue that his failure was largely caused by external factors outside of Chiang's control. They include the refusal of the Truman administration to support Chiang by withdrawing aid, the foisting of an arms embargo by George C. Marshall, the failed pursuit of a détente between the nationalists and the communists, the American push for a coalition government with the CCP, and the USSR's consistent aid and support for the CCP during the civil war. In the United States and Europe, Chiang was often perceived negatively as the one who lost China to the communists. His persistent demands for United States support and funding also prompted jokes from American officials that Chiang's name was actually General "Cash-My-Check". He has also been criticized for his poor military skills, such as issuing unrealistic orders and persistently attempting to fight unwinnable battles, leading to the loss of his best troops. In recent years, Chiang's image has been somewhat rehabilitated, and he has been increasingly perceived as a man overwhelmed by the events in China, having to fight the communists, Japanese, and provincial warlords simultaneously while trying to reconstruct and unify the country. His sincere, albeit often unsuccessful attempts to build a more powerful and modern nation have been noted by scholars such as Jonathan Fenby, Rana Mitter, and biographer Jay Taylor. In 1901, in an arranged marriage at age 14, Chiang was married to Mao Fumei, an illiterate villager five years his senior. While married to Mao, Chiang adopted two concubines (concubinage was still a common practice for well-to-do, non-Christian males in China): he took Yao Yecheng (姚冶誠, 1887–1966) as concubine in late 1912 and married Chen Jieru (1906–1971) in December 1921. While he was still living in Shanghai, Chiang and Yao adopted a son, Wei-kuo Chen adopted a daughter in 1924, named Yaoguang, who later adopted her mother's surname. Chen's autobiography refuted the idea that she was a concubine. Chen claiming that, by the time she married Chiang, he had already divorced Yao, and that Chen was therefore his wife. Chiang and Mao had a son, Ching-kuo. According to the memoirs of Chen Jieru, Chiang's second wife (Chen Jieru) contracted gonorrhea from Chiang soon after their marriage. He told her that he acquired this disease after separating from his first wife and living with his concubine Yao Yecheng, as well as with many other women he consorted with. His doctor explained to her that Chiang had sex with her before completing his treatment for the disease. As a result, both Chiang and Chen Jieru believed that they had become sterile; however, a purported miscarriage by Soong Mei-ling in August 1928 would, if it actually occurred, cast serious doubt on whether this was true. The Xikou Chiangs were descended from Chiang Shih-chieh, who during the 1600s moved there from Fenghua district, and whose ancestors in turn came to southeastern China's Zhejiang (Chekiang) province after moving out of Northern China in the 13th century CE. The 12th century BCE Duke of Zhou's (Duke of Chou) third son was the ancestors of the Chiangs. His great-grandfather was Chiang Qi-zeng, his grandfather was Chiang Si-qian, his uncle was Chiang Zhao-hai, and his father was Chiang Zhao-cong. Chiang personally dealt extensively with religions, power figures, and factions in China during his regime. Chiang Kai-shek was born and raised as a Buddhist, but became a Methodist upon his marriage to his fourth wife, Soong Mei-ling. It was previously believed that this was a political move, but further studies of his personal diaries suggest that his faith was sincere. Chiang developed relationships with other generals. Chiang became a sworn brother of the Chinese Muslim general Ma Fuxiang and appointed him to high ranking positions. Chiang addressed Ma Fuxiang's son Ma Hongkui as Shao Yun Shixiong Ma Fuxiang attended national leadership conferences with Chiang during battles against Japan. Ma Hongkui was eventually scapegoated for the failure of the Ningxia Campaign against the Communists, so he moved to the US instead of remaining in Taiwan with Chiang. When Chiang became President of China after the Northern Expedition, he carved out Ningxia and Qinghai out of Gansu province, and appointed Muslim generals as military governors of all three provinces: Ma Hongkui, Ma Hongbin, and Ma Qi. The three Muslim governors, known as Xibei San Ma (lit. "the three Mas of the Northwest"), controlled armies composed entirely of Muslims. Chiang called on the three and their subordinates to wage war against the Soviet peoples, Tibetans, Communists, and the Japanese. Chiang continued to appoint Muslims as governors of the three provinces, including Ma Lin and Ma Fushou. Chiang's appointments, the first time that Muslims had been appointed as governors of Gansu, increased the prestige of Muslim officials in northwestern China. The armies raised by this "Ma Clique", most notably their Muslim cavalry, were incorporated into the KMT army. Chiang appointed Hui general Bai Chongxi as the Minister of National Defence of the Republic of China, which controlled the ROC military. Chiang also supported the Muslim General Ma Zhongying, whom he had trained at Whampoa Military Academy during the Kumul Rebellion, in a jihad against Jin Shuren, Sheng Shicai, and the Soviet Union during the Soviet Invasion of Xinjiang. Chiang designated Ma's Muslim army as the 36th Division (National Revolutionary Army) and gave his troops KMT flags and uniforms. Chiang then supported Muslim General Ma Hushan against Sheng and the Soviet Union in the Xinjiang War (1937). All Muslim generals commissioned by Chiang in the National Revolutionary Army swore allegiance to him. Several, like Ma Shaowu and Ma Hushan were loyal to Chiang and Kuomintang hardliners. The Ili Rebellion and Pei-ta-shan Incident plagued relations with the Soviet Union during Chiang's rule and caused trouble with the Uyghurs. During the Ili Rebellion and Peitashan incident, Chiang deployed Hui troops against Uyghur mobs in Turfan, and against Soviet Russian and Mongols at Peitashan. During Chiang's rule, attacks on foreigners and ethnic minorities by the allied warlords of the Nationalist government such as the Ma Clique flared up in several incidents. One of these was the Battle of Kashgar where a Muslim army loyal to the Kuomintang massacred 4,500 Uyghurs, and killed several Britons at the British consulate in Kashgar. Hu Songshan, a Muslim Imam, backed Chiang Kai-shek's regime and gave prayers for his government. ROC flags were saluted by Muslims in Ningxia during prayer along with exhortations to nationalism during Chiang's rule. Chiang sent Muslim students abroad to study at places like Al-Azhar University and Muslim schools throughout China that taught loyalty to his regime. The Yuehua, a Chinese Muslim publication, quoted the Quran and hadith to justify submitting to Chiang Kai-shek as the leader of China, and as justification for Jihad in the war against Japan. The Yihewani (Ikhwan al Muslimun a.k.a. Muslim brotherhood) was the predominant Muslim sect backed by the Chiang government during Chiang's regime. Other Muslim sects, like the Xidaotang and Sufi brotherhoods like Jahriyya and Khuffiya were also supported by his regime. The Chinese Muslim Association, a pro-Kuomintang and anti-Communist organization, was set up by Muslims working in his regime. Salafists attempted to gain a foothold in China during his regime, but the Yihewani and Hanafi Sunni Gedimu denounced the Salafis as radicals, engaged in fights against them, and declared them heretics, forcing the Salafis to form a separate sect. Ma Ching-chiang, a Muslim General, served as an advisor to Chiang Kai-shek. Ma Buqing was another Muslim General who fled to Taiwan along with Chiang. His government donated money to build the Taipei Grand Mosque on Taiwan. Chiang had uneasy relations with the Tibetans. He fought against them in the Sino-Tibetan War, and he supported the Muslim General Ma Bufang in his war against Tibetan rebels in Qinghai. Chiang ordered Ma Bufang to prepare his Islamic army to invade Tibet several times, to deter Tibetan independence, and threatened the Tibetans with aerial bombardment. Ma Bufang attacked the Tibetan Buddhist Tsang monastery in 1941. After the war, Chiang appointed Ma Bufang as ambassador to Saudi Arabia. Chiang incorporated Methodist values into the New Life Movement under the influence of his wife. Dancing and Western music were discouraged. In one incident, several youths splashed acid on people wearing Western clothing, although Chiang was not directly responsible for these incidents. Despite being a Methodist, he made reference to the Buddha in his diary, and encouraged the establishment of a Buddhist political party under Master Taixu. According to Jehovah's Witnesses' magazine The Watchtower, some of their members travelled to Chongqing and spoke to him personally while distributing their literature there during World War II.	[ { "paragraph_id": 0, "text": "Chiang Kai-shek (31 October 1887 – 5 April 1975) was a Chinese politician, revolutionary, and military leader who served as the leader of the Republic of China (ROC) and the Generalissimo of the National Revolutionary Army. He held these positions in mainland China from 1928 until 1949, when his nationalist Kuomintang (KMT) party was defeated in the Chinese Civil War by the Chinese Communist Party (CCP)—thereafter, he led the remnant of the ROC government on the island of Taiwan until his death.", "title": "" }, { "paragraph_id": 1, "text": "Born in Zhejiang, Chiang was a member of the Kuomintang, and a lieutenant of Sun Yat-sen in the revolution to overthrow the Beiyang government and reunify China. With help from the Soviets and the Chinese Communist Party, Chiang organized the military for Sun's Canton Nationalist Government and headed the Whampoa Military Academy. As commander-in-chief of the National Revolutionary Army, he led the Northern Expedition from 1926 to 1928, before defeating a coalition of warlords and nominally reunifying China under a new nationalist government. Midway through the Northern Expedition, the KMT–CCP alliance broke down and Chiang massacred communists and KMT leftists inside the party, triggering a civil war with the CCP, which he eventually lost in 1949.", "title": "" }, { "paragraph_id": 2, "text": "As the leader of the Republic of China during the Nanjing decade, Chiang sought to strike a difficult balance between modernizing China, while also devoting resources to defending the nation against the CCP, warlords, and the impending Japanese threat. Trying to avoid a war with Japan while hostilities with the CCP continued, he was kidnapped in the Xi'an Incident, and obliged to form an Anti-Japanese United Front with the CCP. Following the Marco Polo Bridge Incident in 1937, he mobilized China for the Second Sino-Japanese War. For eight years, he led the war of resistance against a vastly superior enemy, mostly from the wartime capital Chongqing. As the leader of a major Allied power, Chiang met with British prime minister Winston Churchill and American president Franklin D. Roosevelt in the Cairo Conference to discuss terms for the Japanese surrender. When the Second World War ended, the Civil War with the communists (by then led by Mao Zedong) resumed. Chiang's nationalists were mostly defeated in a few decisive battles in 1948. In 1949, Chiang's government and army retreated to the island of Taiwan, where Chiang imposed martial law and persecuted critics during the White Terror. Presiding over a period of social reforms and economic prosperity, Chiang won five elections to six-year terms as President of the Republic of China in which he faced minimal opposition or was elected unopposed. Three years into his fifth term as president, and one year before the death of Mao, he died in 1975. He also held the position of director-general within the Kuomintang until his death. Chiang was one of the longest-serving non-royal heads of state in the 20th century and the longest-serving non-royal ruler of China, having held the post for 46 years.", "title": "" }, { "paragraph_id": 3, "text": "Like Mao, Chiang is regarded as a controversial figure. Supporters credit him with playing a major part in unifying the nation, leading the Chinese resistance against Japan, and countering CCP influence and economic development in both mainland China and Taiwan. Detractors and critics denounce him as a brutal dictator at the front of a corrupt authoritarian regime that massacred civilians and suppressed political dissents, and often accuse him of being a fascist. He is also criticized for flooding the Yellow River, a move that subsequently caused the Henan Famine during the Second Sino-Japanese War. Other historians argued that despite his many faults, Chiang's ideology notably differs from other right-wing dictators of the 20th century, and he did not genuinely espouse the ideology of fascism. They argue that Chiang made genuine efforts to improve mainland China and Taiwan's economic and social conditions, such as improving women's rights and land reform. Chiang was also credited with transforming China from a semi-colony of various imperialist powers to an independent country by amending the unequal treaties signed by previous governments, as well as moving various Chinese national treasures and traditional Chinese artworks to the National Palace Museum in Taipei during the 1949 retreat.", "title": "" }, { "paragraph_id": 4, "text": "Like many other Chinese historical figures, Chiang used several names throughout his life. The name inscribed in the genealogical records of his family is Chiang Chou-t‘ai (Chinese: 蔣周泰; pinyin: Jiǎng Zhōutài; Wade–Giles: Chiang Chou-t‘ai). This so-called \"register name\" (譜名) is the one by which his extended relatives knew him, and the one he used in formal occasions, such as when he was married. In deference to tradition, family members did not use the register name in conversation with people outside of the family. The concept of a \"real\" or original name is/was not as clear-cut in China as it is in the Western world. In honor of tradition, Chinese families waited a number of years before officially naming their children. In the meantime, they used a \"milk name\" (乳名), given to the infant shortly after his birth and known only to the close family. So the name that Chiang received at birth was Chiang Jui-yüan (Chinese: 蔣瑞元; pinyin: Jiǎng Ruìyuán).", "title": "Names" }, { "paragraph_id": 5, "text": "In 1903, the 16-year-old Chiang went to Ningbo as a student, and chose a \"school name\" (學名). This was the formal name of a person, used by older people to address him, and the one he would use the most in the first decades of his life (as a person grew older, younger generations would use one of the courtesy names instead). Colloquially, the school name is called \"big name\" (大名), whereas the \"milk name\" is known as the \"small name\" (小名). The school name that Chiang chose for himself was Zhiqing (Chinese: 志清; Wade–Giles: Chih-ch‘ing, which means \"purity of aspirations\"). For the next fifteen years or so, Chiang was known as Jiang Zhiqing (Wade–Giles: Chiang Chi-ch‘ing). This is the name by which Sun Yat-sen knew him when Chiang joined the republicans in Guangdong in the 1910s.", "title": "Names" }, { "paragraph_id": 6, "text": "In 1912, when Chiang was in Japan, he started to use the name Chiang Kai-shek (Chinese: 蔣介石; pinyin: Jiǎng Jièshí; Wade–Giles: Chiang Chieh-shih) as a pen name for the articles that he published in a Chinese magazine he founded: Voice of the Army (軍聲). Jieshi is the pinyin romanization of this name, based on Standard Chinese, but the most recognized romanized rendering is Kai-shek which is in Cantonese romanization. Because the Republic of China was based in Canton (a Cantonese-speaking area, now known as Guangdong), Chiang (who never spoke Cantonese but was a native Wu speaker) became known by Westerners under the Cantonese romanization of his courtesy name, while the family name as known in English seems to be the Mandarin pronunciation of his Chinese family name, transliterated in Wade–Giles.", "title": "Names" }, { "paragraph_id": 7, "text": "\"Kai-shek\"/\"Jieshi\" soon became Chiang's courtesy name (字). Some think the name was chosen from the classic Chinese book the I Ching; \"介于石\"; '[he who is] firm as a rock\"', is the beginning of line 2 of Hexagram 16, \"豫\". Others note that the first character of his courtesy name is also the first character of the courtesy name of his brother and other male relatives on the same generational line, while the second character of his courtesy name shi (石—meaning \"stone\") suggests the second character of his \"register name\" tai (泰—the famous Mount Tai). Courtesy names in China often bore a connection with the personal name of the person. As the courtesy name is the name used by people of the same generation to address the person, Chiang soon became known under this new name.", "title": "Names" }, { "paragraph_id": 8, "text": "Sometime in 1917 or 1918, as Chiang became close to Sun Yat-sen, he changed his name from Jiang Zhiqing to Jiang Zhongzheng (Chinese: 蔣中正; pinyin: Jiǎng Zhōngzhèng). By adopting the name Chung-cheng, he was choosing a name very similar to the name of Sun Yat-sen, who is known among Chinese as Zhongshan (中山—meaning \"central mountain\"), thus establishing a link between the two. The meaning of uprightness, rectitude, or orthodoxy, implied by his name, also positioned him as the legitimate heir of Sun Yat-sen and his ideas. It was readily accepted by members of the Chinese Nationalist Party and is the name under which Chiang is still commonly known in Taiwan. Often the name is shortened to \"Chung-cheng\" only. Many public places in Taiwan are named Chungcheng after Chiang. For many years passengers arriving at the Chiang Kai-shek International Airport were greeted by signs in Chinese welcoming them to the \"Chung Cheng International Airport\". Similarly, the monument erected to Chiang's memory in Taipei, known in English as Chiang Kai-shek Memorial Hall, was named \"Chung Cheng Memorial Hall\" in Chinese. In Singapore, Chung Cheng High School was named after him.", "title": "Names" }, { "paragraph_id": 9, "text": "His name is also written in Taiwan as \"The Late President Honorable Chiang\" (先總統蔣公), where the one-character-wide space in front of his name known as Nuo tai shows respect. He is often called Honorable Chiang.", "title": "Names" }, { "paragraph_id": 10, "text": "In this context, his surname \"Chiang\" in this article is spelled using the Wade–Giles system of transliteration for Standard Chinese as opposed to Hanyu Pinyin though the latter was adopted by the Republic of China government in 2009 as its official romanization.", "title": "Names" }, { "paragraph_id": 11, "text": "Chiang was born on 31 October 1887, in Xikou, a town in Fenghua, Zhejiang, China, about 30 kilometers (19 mi) west of central Ningbo. He was born into a family of Wu Chinese-speaking people with their ancestral home—a concept important in Chinese society—in Heqiao [zh], a town in Yixing, Jiangsu, about 38 km (24 mi) southwest of central Wuxi and 10 km (6.2 mi) from the shores of Lake Tai. He was the third child and second son of his father Chiang Chao-Tsung [zh] (also Chiang Su-an; 1842–1895; 蔣肇聰) and the first child of his father's third wife Wang Tsai-yu [zh] (1863–1921; 王采玉) who were members of a prosperous family of salt merchants. Chiang's father died when he was eight, and he wrote of his mother as the \"embodiment of Confucian virtues\". The young Chiang was inspired throughout his youth by the realization that the reputation of an honored family rested upon his shoulders. He was a naughty child. At a young age he was interested in the military. As he grew older, Chiang became more aware of the issues that surrounded him and in his speech to the Kuomintang in 1945 said:", "title": "Early life" }, { "paragraph_id": 12, "text": "As you all know I was an orphan boy in a poor family. Deprived of any protection after the death of her husband, my mother was exposed to the most ruthless exploitation by neighbouring ruffians and the local gentry. The efforts she made in fighting against the intrigues of these family intruders certainly endowed her child, brought up in such an environment, with an indomitable spirit to fight for justice. I felt throughout my childhood that my mother and I were fighting a helpless lone war. We were alone in a desert, with no available or possible assistance could we look forward to. But our determination was never shaken, nor was hope abandoned.", "title": "Early life" }, { "paragraph_id": 13, "text": "In early 1906, Chiang cut off his queue, the required hairstyle of men during the Qing dynasty, and had it sent home from school, shocking the people in his hometown.", "title": "Early life" }, { "paragraph_id": 14, "text": "Chiang grew up at a time in which military defeats, natural disasters, famines, revolts, unequal treaties and civil wars had left the Manchu-dominated Qing dynasty destabilized and in debt. Successive demands of the Western powers and Japan since the Opium War had left China owing millions of taels of silver. During his first visit to Japan to pursue a military career from April 1906 to later that year, he describes himself as having strong nationalistic feelings with a desire, among other things, to 'expel the Manchu Qing and to restore China'. In a 1969 speech, Chiang related a story about his boat trip to Japan at nineteen years old. Another passenger on the ship, a Chinese fellow student who was in the habit of spitting on the floor, was chided by a Chinese sailor who said that Japanese people did not spit on the floor, but instead would spit into a handkerchief. Chiang used the story as an example of how the common man in 1969 Taiwan had not developed the spirit of public sanitation that Japan had. Chiang decided to pursue a military career. He began his military training at the Baoding Military Academy in 1906, the same year Japan left its bimetallic currency standard, devaluing the Japanese yen. He left for Tokyo Shinbu Gakko, a preparatory school for the Imperial Japanese Army Academy intended for Chinese students, in 1907. There, he came under the influence of compatriots to support the revolutionary movement to overthrow the Manchu-dominated Qing dynasty and to set up a Han-dominated Chinese republic. He befriended Chen Qimei, and in 1908 Chen brought Chiang into the Tongmenghui, an important revolutionary brotherhood of the era. Finishing his military schooling at Tokyo Shinbu Gakko, Chiang served in the Imperial Japanese Army from 1909 to 1911.", "title": "Education in Japan" }, { "paragraph_id": 15, "text": "After learning of the Wuchang uprising, Chiang returned to China in 1911, intending to fight as an artillery officer. He served in the revolutionary forces, leading a regiment in Shanghai under his friend and mentor Chen Qimei, as one of Chen's chief lieutenants. In early 1912 a dispute arose between Chen and Tao Chengzhang, an influential member of the Revolutionary Alliance who opposed both Sun Yat-sen and Chen. Tao sought to avoid escalating the quarrel by hiding in a hospital, but Chiang discovered him there. Chen dispatched assassins. Chiang may not have taken part in the assassination, but would later assume responsibility to help Chen avoid trouble. Chen valued Chiang despite Chiang's already legendary temper, regarding such bellicosity as useful in a military leader.", "title": "Returning to China" }, { "paragraph_id": 16, "text": "Chiang's friendship with Chen Qimei signaled an association with Shanghai's criminal syndicate (the Green Gang headed by Du Yuesheng and Huang Jinrong). During Chiang's time in Shanghai, the Shanghai International Settlement police observed him and eventually charged him with various felonies. These charges never resulted in a trial, and Chiang was never jailed.", "title": "Returning to China" }, { "paragraph_id": 17, "text": "Chiang became a founding member of the Nationalist Party (a forerunner of the KMT) after the success (February 1912) of the 1911 Revolution. After the takeover of the Republican government by Yuan Shikai and the failed Second Revolution in 1913, Chiang, like his KMT comrades, divided his time between exile in Japan and the havens of the Shanghai International Settlement. In Shanghai, Chiang cultivated ties with the city's underworld gangs, which were dominated by the notorious Green Gang and its leader Du Yuesheng. On 18 May 1916 agents of Yuan Shikai assassinated Chen Qimei. Chiang then succeeded Chen as leader of the Chinese Revolutionary Party in Shanghai. Sun Yat-sen's political career reached its lowest point during this time—most of his old Revolutionary Alliance comrades refused to join him in the exiled Chinese Revolutionary Party.", "title": "Returning to China" }, { "paragraph_id": 18, "text": "In 1917, Sun Yat-sen moved his base of operations to Canton (now known as Guangzhou) and Chiang joined him in 1918. At this time Sun remained largely sidelined; without arms or money, he was soon expelled from Guangdong (Canton province) and exiled again to Shanghai. He was restored to Guangdong with mercenary help in 1920. After his return to Guangdong, a rift developed between Sun, who sought to militarily unify China under the KMT, and Guangdong Governor Chen Jiongming, who wanted to implement a federalist system with Guangdong as a model province. On 16 June 1922 Ye Ju, a general of Chen's whom Sun had attempted to exile, led an assault on Guangdong's Presidential Palace. Sun had already fled to the naval yard and boarded the SS Haiqi, but his wife narrowly evaded shelling and rifle-fire as she fled. They met on the SS Yongfeng, where Chiang joined them as swiftly as he could return from Shanghai, where he was ritually mourning his mother's death. For about 50 days, Chiang stayed with Sun, protecting and caring for him and earning his lasting trust. They abandoned their attacks on Chen on 9 August, taking a British ship to Hong Kong and traveling to Shanghai by steamer.", "title": "Establishing the Kuomintang's position" }, { "paragraph_id": 19, "text": "Sun regained control of Guangdong in early 1923, again with the help of mercenaries from Yunnan and of the Comintern. Undertaking a reform of the KMT, he established a revolutionary government aimed at unifying China under the KMT. That same year Sun sent Chiang to spend three months in Moscow studying the Soviet political and military system. During his trip to Russia, Chiang met Leon Trotsky and other Soviet leaders, but quickly came to the conclusion that the Russian model of government was not suitable for China. Chiang later sent his eldest son, Ching-Kuo, to study in Russia. After his father's split from the First United Front in 1927, Ching-Kuo was forced to stay there, as a hostage, until 1937. Chiang wrote in his diary, \"It is not worth it to sacrifice the interest of the country for the sake of my son.\" Chiang even refused to negotiate a prisoner swap for his son in exchange for the Chinese Communist Party leader. His attitude remained consistent, and he continued to maintain, by 1937, that \"I would rather have no offspring than sacrifice our nation's interests.\" Chiang had absolutely no intention of ceasing the war against the Communists.", "title": "Establishing the Kuomintang's position" }, { "paragraph_id": 20, "text": "Chiang Kai-shek returned to Guangdong and in 1924 Sun appointed him Commandant of the Whampoa Military Academy. Chiang resigned from the office after one month in disagreement with Sun's extremely close cooperation with the Comintern, but returned at Sun's demand. The early years at Whampoa allowed Chiang to cultivate a cadre of young officers loyal to both the KMT and himself.", "title": "Establishing the Kuomintang's position" }, { "paragraph_id": 21, "text": "Throughout his rise to power, Chiang also benefited from membership within the nationalist Tiandihui fraternity, to which Sun Yat-sen also belonged, and which remained a source of support during his leadership of the Kuomintang.", "title": "Establishing the Kuomintang's position" }, { "paragraph_id": 22, "text": "Sun Yat-sen died on 12 March 1925, creating a power vacuum in the Kuomintang. A contest ensued among Wang Jingwei, Liao Zhongkai, and Hu Hanmin. In August, Liao was assassinated and Hu was arrested for his connections to the murderers. Wang Jingwei, who had succeeded Sun as chairman of the Guangdong regime, seemed ascendant but was forced into exile by Chiang following the Canton Coup. The SS Yongfeng, renamed the Zhongshan in Sun's honour, had appeared off Changzhou, the location of the Whampoa Academy, on apparently-falsified orders and amid a series of unusual phone calls trying to ascertain Chiang's location. He initially considered fleeing Guangdong and even booked passage on a Japanese steamer but then decided to use his military connections to declare martial law on 20 March 1926 and to crack down on Communist and Soviet influence over the National Revolutionary Army, the military academy, and the party. The right wing of the party supported him, and Joseph Stalin, anxious to maintain Soviet influence in the area, had his lieutenants agree to Chiang's demands on a reduced Communist presence in the KMT leadership in exchange for certain other concessions. The rapid replacement of leadership enabled Chiang to effectively end civilian oversight of the military after 15 May, though his authority was somewhat limited by the army's own regional composition and divided loyalties.", "title": "Rising power" }, { "paragraph_id": 23, "text": "On 5 June 1926, he was named commander-in-chief of the National Revolutionary Army and, on 27 July, he finally launched Sun's long-delayed Northern Expedition, aimed at conquering the northern warlords and bringing China together under the KMT.", "title": "Rising power" }, { "paragraph_id": 24, "text": "The NRA branched into three divisions: to the west was the returned Wang Jingwei, who led a column to take Wuhan; Bai Chongxi's column went east to take Shanghai; Chiang himself led in the middle route, planning to take Nanjing before pressing ahead to capture Beijing. However, in January 1927, Wang Jingwei and his KMT leftist allies took the city of Wuhan amid much popular mobilization and fanfare. Allied with a number of Chinese Communists and advised by Soviet agent Mikhail Borodin, Wang declared the national government as having moved to Wuhan.", "title": "Rising power" }, { "paragraph_id": 25, "text": "In 1927, when he was setting up the Nationalist government in Nanjing, he was preoccupied with \"the elevation of our leader Dr. Sun Yat-sen to the rank of 'Father of our Chinese Republic'. Dr. Sun worked for 40 years to lead our people in the Nationalist cause, and we cannot allow any other personality to usurp this honored position\". He asked Chen Guofu to purchase a photograph that had been taken in Japan c. 1895 or 1898. It showed members of the Revive China Society with Yeung Ku-wan as president, in the place of honor, and Sun, as secretary, on the back row, along with members of the Japanese Chapter of the Revive China Society. When told that it was not for sale, Chiang offered a million dollars to recover the photo and its negative, \"The party must have this picture and the negative at any price. They must be destroyed as soon as possible. It would be embarrassing to have our Father of the Chinese Republic shown in a subordinate position\".", "title": "Rising power" }, { "paragraph_id": 26, "text": "On 12 April 1927, Chiang carried out a purge of thousands of suspected Communists and dissidents in Shanghai, and began large-scale massacres across the country collectively known as the \"White Terror\". During April, more than 12,000 people were killed in Shanghai. The killings drove most Communists from urban cities and into the rural countryside, where the KMT was less powerful. In the year after April 1927, over 300,000 people died across China in the anti-communist suppression campaigns, executed by the KMT. One of the most famous quotes from Chiang (during that time) was, that he would rather mistakenly kill 1,000 innocent people, than allow one Communist to escape. Some estimates claim the White Terror in China took millions of lives, most of them in rural areas. No concrete number can be verified. Chiang allowed Soviet agent and advisor Mikhail Borodin and Soviet general Vasily Blücher (Galens) to \"escape\" to safety after the purge.", "title": "Rising power" }, { "paragraph_id": 27, "text": "The NRA formed by the KMT swept through southern and central China until it was checked in Shandong, where confrontations with the Japanese garrison escalated into armed conflict. The conflicts were collectively known as the Jinan incident of 1928.", "title": "Rising power" }, { "paragraph_id": 28, "text": "Now with an established national government in Nanjing, and supported by conservative allies including Hu Hanmin, Chiang's expulsion of the Communists and their Soviet advisers led to the beginning of the Chinese Civil War. Wang Jingwei's National Government was weak militarily, and was soon ended by Chiang with the support of a local warlord (Li Zongren of Guangxi). Eventually, Wang and his leftist party surrendered to Chiang and joined him in Nanjing. However, the cracks between Chiang and Hu's traditionally Right-Wing KMT faction, the Western Hills Group, began to show soon after the cleansing against the communists, and Chiang later imprisoned Hu.", "title": "Rising power" }, { "paragraph_id": 29, "text": "Though Chiang had consolidated the power of the KMT in Nanjing, it was still necessary to capture Beijing to claim the legitimacy needed for international recognition. Beijing was taken in June 1928, from an alliance of the warlords Feng Yuxiang and Yan Xishan. Yan Xishan moved in and captured Beiping on behalf of his new allegiance after the death of Zhang Zuolin in 1928. His successor, Zhang Xueliang, accepted the authority of the KMT leadership, and the Northern Expedition officially concluded, completing Chiang's nominal unification of China and ending the Warlord Era.", "title": "Rising power" }, { "paragraph_id": 30, "text": "After the Northern Expedition ended in 1928, Yan, Feng, Li Zongren and Zhang Fakui broke off relations with Chiang shortly after a demilitarization conference in 1929, and together they formed an anti-Chiang coalition to openly challenge the legitimacy of the Nanjing government. In the Central Plains War, they were defeated.", "title": "Rising power" }, { "paragraph_id": 31, "text": "Chiang made great efforts to gain recognition as the official successor of Sun Yat-sen. In a pairing of great political significance, Chiang was Sun's brother-in-law. He had married Soong Mei-ling, the younger sister of Soong Ching-ling, Sun's widow, on 1 December 1927. Originally rebuffed in the early 1920s, Chiang managed to ingratiate himself to some degree with Soong Mei-ling's mother by first divorcing his wife and concubines and promising to sincerely study the precepts of Christianity. He read the copy of the Bible that May-ling had given him twice before making up his mind to become a Christian, and three years after his marriage he was baptized in the Soong's Methodist church. Although some observers felt that he adopted Christianity as a political move, studies of his recently opened diaries suggest that his faith was strong and sincere and that he felt that Christianity reinforced Confucian moral teachings.", "title": "Rising power" }, { "paragraph_id": 32, "text": "Upon reaching Beijing, Chiang paid homage to Sun Yat-sen and had his body moved to the new capital of Nanjing to be enshrined in a mausoleum, the Sun Yat-sen Mausoleum.", "title": "Rising power" }, { "paragraph_id": 33, "text": "In the West and in the Soviet Union, Chiang Kai-shek was known as the \"Red General\". Movie theaters in the Soviet Union showed newsreels and clips of Chiang. At Moscow, Sun Yat-sen University portraits of Chiang were hung on the walls; and, in the Soviet May Day parades that year, Chiang's portrait was to be carried along with the portraits of Karl Marx, Vladimir Lenin, Joseph Stalin, and other Communist leaders. The United States consulate and other Westerners in Shanghai were concerned about the approach of \"Red General\" Chiang as his army was seizing control of large areas of the country in the Northern Expedition.", "title": "Rising power" }, { "paragraph_id": 34, "text": "Having gained control of China, Chiang's party remained surrounded by defeated warlords who remained relatively autonomous within their own regions. On 10 October 1928, Chiang was named director of the State Council, the equivalent to President of the country, in addition to his other titles. As with his predecessor Sun Yat-sen, the Western media dubbed him \"generalissimo\".", "title": "Rule" }, { "paragraph_id": 35, "text": "According to Sun Yat-sen's plans, the KMT was to rebuild China in three steps: military rule, political tutelage, and constitutional rule. The ultimate goal of the KMT revolution was democracy, which was not considered to be feasible in China's fragmented state. Since the KMT had completed the first step of revolution through seizure of power in 1928, Chiang's rule thus began a period of what his party considered to be \"political tutelage\" in Sun Yat-sen's name. During this so-called Republican Era, many features of a modern, functional Chinese state emerged and developed.", "title": "Rule" }, { "paragraph_id": 36, "text": "From 1928 to 1937, known as the Nanjing decade, various aspects of foreign imperialism, concessions and privileges in China were moderated by diplomacy. The government acted to modernize the legal and penal systems and attempted to stabilize prices, amortize debts, reform the banking and currency systems, build railroads and highways, improve public health facilities, legislate against traffic in narcotics, and augment industrial and agricultural production. Efforts were made to improve education standards, and the national academy of sciences, Academia Sinica, was founded. In an effort to unify Chinese society, the New Life Movement was launched to encourage Confucian moral values and personal discipline. Guoyu (\"national language\") was promoted as the official language, and the establishment of communications facilities (including radio) was used to encourage a sense of Chinese nationalism in a way that had not been possible when the nation lacked an effective central government. Under that context, the Chinese Rural Reconstruction Movement was implemented by some social activists who graduated as professors of the United States with tangible but limited progress in modernizing the tax, infrastructural, economic, cultural, and educational equipment and the mechanisms of rural regions. The social activists actively co-ordinated with the local governments in the towns and villages since the early 1930s. However, the policy was subsequently neglected and canceled by Chiang's government because of rampant wars and the lack of resources after the Japanese War and the civil war.", "title": "Rule" }, { "paragraph_id": 37, "text": "Despite being a conservative, Chiang supported modernization policies such as scientific advancement, universal education, and women's rights. The Kuomintang supported women's suffrage and education and the abolition of polygamy and foot binding. Under Chiang's leadership, the Republic of China government also enacted a women's quota in the parliament, with reserved seats for women. During the Nanjing Decade, average Chinese citizens received education that they had been denied by the dynasties. That increased the literacy rate across China and also promoted the ideals of Tridemism of democracy, republicanism, science, constitutionalism, and Chinese nationalism based on the Dang Guo of the KMT.", "title": "Rule" }, { "paragraph_id": 38, "text": "Any successes that the Nationalists achieved, however, were met with constant political and military upheavals. Many of the urban areas were now under the control of the KMT, but much of the countryside remained under the influence of weakened-but -undefeated warlords, landlords, and Communists. Chiang often resolved issues of warlord obstinacy through military action, but such action was costly in terms of men and material. The Central Plains War alone nearly bankrupted the Nationalist government and caused almost 250,000 casualties on both sides. In 1931, Hu Hanmin, an old supporter of Chiang, publicly voiced a popular concern that Chiang's position as both premier and president flew in the face of the democratic ideals of the Nationalist government. Chiang had Hu put under house arrest, but Hu was released after national condemnation. Hu then left Nanjing and supported a rival government in Canton. The split resulted in a military conflict between Hu's Guangdong government and Chiang's Nationalist government.", "title": "Rule" }, { "paragraph_id": 39, "text": "Throughout his rule, complete eradication of the Communists remained Chiang's dream. After he had assembled his forces in Jiangxi, Chiang led his armies against the newly established Chinese Soviet Republic. With help from foreign military advisers such as Max Bauer and Alexander von Falkenhausen, Chiang's Fifth Campaign finally surrounded the Chinese Red Army in 1934. The Communists, tipped off that a Nationalist offensive was imminent, retreated in the Long March during which Mao rose from a mere military official to the most influential leader of the Chinese Communist Party.", "title": "Rule" }, { "paragraph_id": 40, "text": "Some academics and historians have classified Chiang's rule as fascist. The New Life Movement, initiated by Chiang, was based upon Confucianism mixed with Christianity, nationalism, and authoritarianism that have some similarities to fascism. Frederic Wakeman argued that the New Life Movement was \"Confucian fascism.\" Chiang also sponsored the creation of the Blue Shirts Society, in conscious imitation of the Blackshirts in the Italian Fascist Party and the Sturmabteilung of the Nazi Party. Its ideology was to expel foreign (Japanese and Western) imperialists from China and to crush communism. Close ties with Nazi Germany also gave the Nationalist government access to German military and economic assistance during the mid-1930s. Mao once derogatorily compared Chiang to Adolf Hitler, referring to him as the \"Führer of China.\" However, Chiang repeatedly attacked his enemies such as the Empire of Japan as fascistic and ultra-militaristic. Sino-German relations rapidly deteriorated as Germany grew closer to Japan and almost completely broke down when Japan launched a full-scale invasion of China in 1937, which Germany failed to mediate. However, China did not declare war on Germany, Italy, or even Japan until after the attack on Pearl Harbor in December 1941.", "title": "Rule" }, { "paragraph_id": 41, "text": "Chinese Communists and many conservative anti-communist writers have argued that Chiang was pro-capitalist based on the alliance thesis (the alliance between Chiang and the capitalists to purge the communist and the leftist elements in Shanghai, as well as in the resulting civil war). However, Chiang also antagonized the capitalists of Shanghai by often attacking them and confiscating their capital and assets for government use even while he denounced and fought against communists. Critics have called that \"bureaucratic capitalism.\" Historian Parks M. Coble argues that the phrase \"bureaucratic capitalism\" is too simplistic to adequately characterize this phenomenon. Instead, he says, the regime weakened all social forces so that the government could pursue policies without being responsible nor responsive to any outside political groups. By defeating any potential challenge to its power, government officials could amass sizable fortunes. With that motive, Chiang cracked down pro-communist worker and peasant organizations, as well as rich Shanghai capitalists. Chiang also continued the anti-capitalist rhetoric of Sun Yat-sen and directed the Kuomintang media to attack the capitalists and capitalism openly. He supported government-controlled industries instead. Coble says that the rhetoric had no impact on governmental policy and that its use was to prevent the capitalists from claiming legitimacy within the party or society and to control them and their wealth.", "title": "Rule" }, { "paragraph_id": 42, "text": "Authority within the Nationalist government ultimately lay with Chiang. All major policy changes on military, diplomatic, or economic issues required his approval. According to historian Odd Arne Westad, \"no other leader within the [KMT] had the authority to force through even the simplest decisions. The practical power of high-ranking officials like ministers or the head of the Executive Yuan was more closely tied to their relationship with Chiang than with the formal authority of their position. Chiang created multiple layers of power in his administration which he sometimes played off each other to prevent individuals or cliques from gathering power that could oppose his authority.", "title": "Rule" }, { "paragraph_id": 43, "text": "Contrary to the critique that Chiang was highly corrupt, he was not involved in corruption himself. However his wife, Soong Mei-ling ignored her family's involvement in corruption. The Soong family embezzled $20 million of the course of the 1930s and the 1940s when the Nationalist government's revenues were less than $30 million per year. The Soong family's eldest son, T.V. Soong, was the Chinese premier finance minister, and the eldest daughter, Soong Ai-ling, was the wife of Kung Hsiang-hsi, the wealthiest man in China. The second daughter, Soong Ching-ling, was the wife of Sun Yat-sen, China's founding father. The youngest daughter, Soong Mei-ling, married Chiang in 1927, and following the marriage, both families became intimately connected, which created the \"Soong dynasty\" and the \"Four Families.\" However, Soong was also credited for her campaign for women's rights in China, including her attempts to improve the education, culture, and social benefits of Chinese women. Critics have said that the \"Four Families\" monopolized the regime and looted it. The US sent considerable aid to the Nationalist government but soon realized the widespread corruption. Military supplies that were sent appeared on the black market. Significant sums of money that had been transmitted through T. V. Soong, China's finance minister, soon disappeared. President Truman famously referred to the Nationalist leaders, \"They're thieves, every damn one of them.\" He also said, \"They stole $750 million out of the billions that we sent to Chiang. They stole it, and it's invested in real estate down in São Paolo and some right here in New York.\" Soong Mei-ling and Soong Ai-ling lived luxurious lifestyles and held millions in property, clothes, art, and jewelry. Soong Ai-ling and Soong Mei-ling were also the two richest women in China. Despite living a luxurious life for almost her entire life, Soong Mei-ling left only a $120,000 inheritance, and the reason is that according to her niece, that she donated most of her wealth when she was still alive. Chiang, requiring support, tolerated corruption with people in his inner circles, as well as high-ranking nationalist officials, but not of lower-ranking officers. In 1934, he ordered seven military officers who embezzled state property to be shot. In another case, several division commanders pleaded with Chiang to pardon a criminal officer, but as soon as the division commanders had left, Chiang ordered him shot. The deputy editor and chief reporter at the Central Daily News, Lu Keng, made headline international news by exposing the corruption of two senior officials, Kong Xiangxi (H. H. Kung) T.V. Soong. Chiang then ordered a thorough investigation of the Central Daily News to find the source. However, Lu, risked execution by refusing to comply and protecting his journalists. Chiang wanting to avoid an international response and so jailed Lu instead. Chiang realized the widespread problems that corruption was creating and so he undertook several anti-corruption campaigns before and after World War II with varying success. Before the war, both campaigns, the Nanjing Decade Cleanup of 1927–1930 and the Wartime Reform Movement of 1944–1947, failed. After the World War II and the Civil War, both campaigns, the Kuomintang Reconstruction of 1950–1952 and the Governmental Rejuvenation of 1969–1973, succeeded.", "title": "Rule" }, { "paragraph_id": 44, "text": "Chiang, who viewed all of the foreign great powers with suspicion, wrote in a letter that they \"all have it in their minds to promote the interests of their own respective countries at the cost of other nations\" and saw it as hypocritical for any of them to condemn one another's foreign policy. He used diplomatic persuasion on the United States, Nazi Germany, and the Soviet Union to regain lost Chinese territories, as he viewed all foreign powers as imperialists that were attempting to exploit China.", "title": "Rule" }, { "paragraph_id": 45, "text": "During April 1931, Chiang Kai-shek attended a national leadership conference in Nanjing with Zhang Xueliang and General Ma Fuxiang during which Chiang and Zhang dauntlessly upheld that Manchuria was part of China in the face of the Japanese invasion. After the Japanese invasion of Manchuria in 1931, Chiang resigned as Chairman of the National Government. He returned shortly afterward and adopted the slogan \"first internal pacification, then external resistance.\" However, his policy of avoiding a frontal war against Japan and prioritizing anti-communist suppression was widely unpopular and provoked nationwide protests. In 1932, while Chiang was seeking first to defeat the Communists, Japan launched an advance on Shanghai and bombarded Nanjing. That disrupted Chiang's offensives against the Communists for a time, but it was the northern factions of Hu Hanmin's Guangdong government (notably the 19th Route Army) that primarily led the offensive against the Japanese during the skirmish. Brought into the NRA immediately after the battle, the 19th Route Army's career under Chiang would be cut short by being disbanded for demonstrating socialist tendencies.", "title": "Rule" }, { "paragraph_id": 46, "text": "In December 1936, Chiang flew to Xi'an to co-ordinate a major assault on the Red Army and the CPC, which had retreated into Yan'an. However, Chiang's allied commander Zhang Xueliang, whose forces were used in his attack and whose homeland of Manchuria had been recently invaded by the Japanese, did not support the attack on the Communists. On 12 December, Zhang and several other Nationalist generals, headed by Yang Hucheng of Shaanxi kidnapped Chiang for two weeks in what is known as the Xi'an Incident. They forced Chiang into making a \"Second United Front\" with the Communists against Japan. After releasing Chiang and returning to Nanjing with him, Zhang was placed under house arrest, and the generals who had assisted him were executed. The Second United Front had a commitment by Chiang that was nominal at best and was all but dissolved in 1941.", "title": "Rule" }, { "paragraph_id": 47, "text": "", "title": "Rule" }, { "paragraph_id": 48, "text": "The Second Sino-Japanese War broke out in July 1937, and in August, Chiang sent 600,000 of his best-trained and equipped soldiers to defend Shanghai. With over 200,000 Chinese casualties, Chiang lost the political cream of his Whampoa-trained officers. Although Chiang lost militarily, the battle dispelled Japan's claims that it could conquer China in three months and also demonstrated to the Western powers that the Chinese would continue the fight. By December, the capital city of Nanjing had fallen to the Japanese resulting in the Nanjing Massacre. Chiang moved the government inland first to Wuhan and later to Chongqing.", "title": "Rule" }, { "paragraph_id": 49, "text": "Having lost most of China's economic and industrial centers, Chiang withdrew into the hinterlands, stretched the Japanese supply lines, and bogged down Japanese soldiers in the vast Chinese interior. As part of a policy of protracted resistance, Chiang authorized the use of scorched-earth tactics, which resulted in many civilian deaths. During the Nationalists' retreat from Zhengzhou, the dams around the city were deliberately destroyed by the National Revolutionary Army to delay the Japanese advance, and the subsequent 1938 Yellow River flood killed 800,000 to one million people. Four million Chinese were left homeless. Chiang and the KMT were slow to provide disaster relief.", "title": "Rule" }, { "paragraph_id": 50, "text": "After heavy fighting, the Japanese occupied Wuhan in the fall of 1938, and the Nationalists retreated farther inland to Chongqing. En route to Chongqing, the Nationalist Army intentionally started the Changsha Fire as a part of its scorched-earth policy. The fire destroyed much of the city, killed 20,000 civilians, and left hundreds of thousands of people homeless. An organizational error (it was claimed) caused the fire to be started without any warning to the residents of the city. The Nationalists eventually blamed three local commanders for the fire and executed them. Newspapers across China blamed the fire on (non-KMT) arsonists, but the blaze contributed to a nationwide loss of support for the KMT.", "title": "Rule" }, { "paragraph_id": 51, "text": "In 1939, the Muslim leaders Isa Yusuf Alptekin and Ma Fuliang were sent by Chiang to several Middle Eastern countries, including Egypt, Turkey, and Syria, to gain support for the war against Japan and to express his support for Muslims.", "title": "Rule" }, { "paragraph_id": 52, "text": "The Japanese, controlling the puppet state of Manchukuo and much of China's eastern seaboard, appointed Wang Jingwei as a puppet ruler of the occupied Chinese territories around Nanjing. Wang named himself President of the Executive Yuan and chairman, and he led a surprisingly large minority of anti-Chiang and anti-Communist Chinese against his old comrades. He died in 1944, a year before the end of World War II.", "title": "Rule" }, { "paragraph_id": 53, "text": "The Hui Xidaotang sect pledged allegiance to the Kuomintang after the party's rise to power, and Hui general Bai Chongxi acquainted Chiang with the Xidaotang Juaozhu Ma Mingren in 1941 in Chongqing.", "title": "Rule" }, { "paragraph_id": 54, "text": "In 1942 Chiang went on tour in northwestern China in Xinjiang, Gansu, Ningxia, Shaanxi, and Qinghai, where he met the Muslim Generals Ma Buqing and Ma Bufang. He also met the Muslim Generals Ma Hongbin and Ma Hongkui separately.", "title": "Rule" }, { "paragraph_id": 55, "text": "A border crisis erupted with Tibet in 1942. Under orders from Chiang, Ma Bufang repaired Yushu Airport to prevent Tibetan separatists from seeking independence. Chiang also ordered Ma Bufang to put his Muslim soldiers on alert for an invasion of Tibet in 1942. Ma Bufang complied and moved several thousand troops to the Tibetan border. Chiang also threatened the Tibetans with aerial bombardment if they worked with the Japanese. Ma Bufang attacked the Tibetan Buddhist Tsang monastery in 1941. He also constantly attacked the Labrang Monastery.", "title": "Rule" }, { "paragraph_id": 56, "text": "After the attack on Pearl Harbor and the opening of the Pacific War, China became one of the Allies. During and after World War II, Chiang and his American-educated wife, Soong Mei-ling, known in the United States as \"Madame Chiang\", held the support of the American \"China Lobby\", which saw in them the hope of a Christian and democratic China. Chiang was even named the Supreme Commander of Allied forces in the China war zone. He was appointed Knight Grand Cross of the Order of the Bath in 1942.", "title": "Rule" }, { "paragraph_id": 57, "text": "General Joseph Stilwell, an American military advisor to Chiang during World War II, strongly criticized Chiang and his generals for what Stilwell saw as their incompetence and corruption. In 1944, the United States Army Air Corps commenced Operation Matterhorn to bomb Japan's steel industry from bases to be constructed in mainland China. That was meant to fulfill US President Franklin D. Roosevelt's promise to Chiang to begin bombing operations against Japan by November 1944. However, Chiang's subordinates refused to take air base construction seriously until enough capital had been delivered to permit embezzlement on a massive scale. Stilwell estimated that at least half of the $100 million spent on construction of air bases was embezzled by Nationalist party officials.", "title": "Rule" }, { "paragraph_id": 58, "text": "The poor performance of Nationalist forces during the Japanese Ichigo campaign contributed to the view that Chiang was incompetent. Chiang argued that the United States, and Stillwell in particular, were at fault for the failure because they had moved too many Chinese troops into the Burma campaign.", "title": "Rule" }, { "paragraph_id": 59, "text": "After the Japanese surrender, Chiang had to rely on the assistance of the United States in order to transport his troops to regain control of occupied areas. Non-Chinese found the behavior of these troops and accompanying officials as undercutting Nationalist legitimacy, as Nationalist forces engaged in a \"botched liberation\" characterized by corruption, looting, and inefficiency.", "title": "Rule" }, { "paragraph_id": 60, "text": "Chiang tried to balance the influence of the Soviets and the Americans in China during the war. He first told the Americans that they would be welcome in talks between the Soviet Union and China and then secretly told the Soviets that the Americans were unimportant and that their opinions would not be considered. Chiang also used American support and military power in China against Soviet ambitions to dominate the talks. That stopped the Soviets from taking full advantage of the situation in China by the threat of American military action against them.", "title": "Rule" }, { "paragraph_id": 61, "text": "Chiang's Nationalist government made laws on abortion in China more restrictive during the Second Sino-Japanese War. In 1945, Chiang adopted a eugenic population policy that was intended to promote hybrid vigor by encouraging intermarriage between whites and Chinese to combine European fair skin with superior Chinese intelligence. Although adopted, the policy was never successfully implemented.", "title": "Rule" }, { "paragraph_id": 62, "text": "President Roosevelt, through General Stilwell, privately made it clear that he preferred for the French not to reacquire French Indochina (now Vietnam, Cambodia and Laos) after the war was over. Roosevelt offered Chiang control of all of Indochina. It was said that Chiang replied, \"Under no circumstances!\"", "title": "Rule" }, { "paragraph_id": 63, "text": "After the war, 200,000 Chinese troops under General Lu Han were sent by Chiang to northern Indochina (north of the 16th parallel) to accept the surrender of Japanese occupying forces there, and the Chinese forces remained in Indochina until 1946, when the French returned. The Chinese used the VNQDD, the Vietnamese branch of the Kuomintang, to increase their influence in Indochina and to put pressure on their opponents. Chiang threatened the French with war in response to maneuvering by the French and Ho Chi Minh's forces against each other and forced them to come to a peace agreement. In February 1946, he also forced the French to surrender all of their concessions in China and to renounce their extraterritorial privileges in exchange for the Chinese withdrawing from northern Indochina and allowing French troops to reoccupy the region. After France's agreement to those demands, 20,000 French soldiers landed in Haiphong, North Vietnam, on March 6, 1946, under the leadership of general Philippe Leclerc de Hauteclocque, followed by the withdrawal of Chinese troops which began in March 1946.", "title": "Rule" }, { "paragraph_id": 64, "text": "According to Republic of China's notes of a dinner meeting during the Cairo Conference in 1943, Roosevelt asked Chiang whether China desired the Ryukyu islands as territories restored from Japan. Chiang said he would be agreeable to joint occupation and administration by China and the United States.", "title": "Rule" }, { "paragraph_id": 65, "text": "Because of Chiang's focus on his communist opponents, he allowed some Japanese forces and forces from the Japanese puppet regimes to remain on duty in occupied areas in an effort to prevent the communists from accepting their surrender.", "title": "Rule" }, { "paragraph_id": 66, "text": "American troops and weapons soon bolstered the Nationalist forces, which allowed them to reclaim the cities. The countryside, however, remained largely under Communist control. Chiang implemented his war-time phrase \"repay evil with good\" and made a huge effort to protect elements of the Japanese invading army. In 1949, a Nationalist court acquitted General Okamura Yasuji, the chief commander of Japanese forces in China, of alleged war crimes, retaining him as an advisor. Nationalist China repeatedly intervened to protect Okamura from repeated American requests to testify at the Tokyo war crimes trial.", "title": "Rule" }, { "paragraph_id": 67, "text": "Many top Nationalist generals, including Chiang, had studied and trained in Japan before the Nationalists had returned to the mainland in the 1920s and maintained close personal friendships with top Japanese officers. The Japanese general in charge of all forces in China, General Okamura had personally trained officers who later became generals in Chiang's staff. Reportedly, Chiang seriously considered accepting this offer but declined only because he knew that the United States would certainly be outraged by the gesture. Even so, armed Japanese troops remained in China well into 1947, with some non-commissioned officers finding their way into the Nationalist officer corps. The Japanese in China came to regard Chiang as a magnanimous figure to whom many of them owed their lives and livelihoods; that fact was attested by both Nationalist and Communist sources.", "title": "Rule" }, { "paragraph_id": 68, "text": "Chiang did not de-mobilize his troops after the defeat of the Japanese, instead remaining on a war footing to prepare for the resumption of civil war against the Communists. This further strained the economy of Nationalist era China, worsening deficits. A significant body of evidence suggests that much of the Nationalist military budget in this period was wasted. One factor in military budget waste included that troop counts were inflated above actual head counts and that officers embezzled the salaries of the non-existent soldiers. Another was the power of military commanders over local branches of the Bank of China, which they could require to provide currency outside of the normal budget process.", "title": "Rule" }, { "paragraph_id": 69, "text": "Although Chiang had achieved status abroad as a world leader, his government deteriorated as the result of corruption and hyperinflation. In his diary in June 1948, Chiang wrote that the KMT had failed not because of external enemies but because of rot from within. The war had severely weakened the Nationalists, and the Communists were strengthened by their popular land reform policies and by a rural population that supported and trusted them. The Nationalists initially had superiority in arms and men, but their lack of popularity, infiltration by Communist agents, low morale, and disorganization soon allowed the Communists to gain the upper hand in the civil war.", "title": "Rule" }, { "paragraph_id": 70, "text": "After World War II, the United States encouraged peace talks between Chiang and the Communist leader, Mao Zedong, in Chongqing. Concerns about widespread and well-documented corruption in Chiang's government throughout his rule made the US government limit aid to Chiang for much of the period of 1946 to 1948 despite the fighting against Mao's Red Army. Alleged infiltration of the US government by CCP agents may have also played a role in the suspension of American aid.", "title": "Rule" }, { "paragraph_id": 71, "text": "Chiang's right-hand man, the secret police chief Dai Li, was anti-American and anti-Communist and a self-declared fascist. Dai ordered Kuomintang agents to spy on American officers. Earlier, Dai had been involved with the Blue Shirts Society, a fascist-inspired paramilitary group within the Kuomintang that wanted to expel Western and Japanese imperialists, crush the Communists, and eliminate feudalism. Dai Li died in a plane crash, which some suspect to be an assassination orchestrated by Chiang; however, the assassination was also rumoured to have been arranged by the American Office of Strategic Services because of Dai's anti-Americanism and since it happened on an American plane.", "title": "Rule" }, { "paragraph_id": 72, "text": "A new constitution was promulgated in 1947, and Chiang was elected by the National Assembly as the first President of the Republic of China on 20 May 1948. That marked the beginning of what was termed the \"democratic constitutional government\" period by the KMT political orthodoxy, but the Communists refused to recognize the new Constitution, and its government as legitimate. Chiang resigned as president on 21 January 1949, as Nationalist forces suffered terrible losses and defections to the Communists. After Chiang's resignation, vice-president Li Zongren became China's acting president.", "title": "Rule" }, { "paragraph_id": 73, "text": "Shortly after Chiang's resignation, the Communists halted their advances and attempted to negotiate the Nationalists' virtual surrender. Li tried to negotiate milder terms to end the civil war but had no success. When it became clear that Li was unlikely to accept Mao's terms, the Communists issued an ultimatum in April 1949 that warned that they would resume their attacks if Li did not agree within five days. Li refused.", "title": "Rule" }, { "paragraph_id": 74, "text": "Li's attempts to carry out his policies faced varying degrees of opposition from Chiang's supporters and were generally unsuccessful. Taylor has noted that Chiang had a superstitious belief in holding Manchuria. After the Nationalist military defeat in the province, Chiang lost faith in winning the war and started to prepare for the retreat to Taiwan. Chiang especially antagonized Li by taking possession of and moving to Taiwan US$200 million of gold and US dollars that belonged to the central government. Li desperately needed them to cover the government's soaring expenses. When the Communists captured the Nationalist capital of Nanjing in April 1949, Li refused to accompany the central government as it fled to Guangdong and instead expressed his dissatisfaction with Chiang by retiring to Guangxi.", "title": "Rule" }, { "paragraph_id": 75, "text": "The former warlord Yan Xishan, who had fled to Nanjing only one month earlier, quickly insinuated himself within the Li-Chiang rivalry and attempted to have Li and Chiang reconcile their differences in the effort to resist the Communists. At Chiang's request, Yan visited Li to convince Li not to withdraw from public life. Yan broke down in tears while he talked of the loss of his home province of Shanxi to the Communists, and he warned Li that the Nationalist cause was doomed unless Li went to Guangdong. Li agreed to return if Chiang surrendered most of the gold and US dollars in his possession that belonged to the central government, and Chiang stopped overriding Li's authority. After Yan communicated those demands and Chiang agreed to comply with them, Li departed for Guangdong.", "title": "Rule" }, { "paragraph_id": 76, "text": "In Guangdong, Li attempted to create a new government composed of both supporters and opponents of Chiang. Li's first choice of premier was Chu Cheng, a veteran member of the Kuomintang who had been virtually driven into exile for his strong opposition to Chiang. After the Legislative Yuan jas rejected Chu, Li was obliged to choose Yan Xishan instead. By then, Yan was well known for his adaptability, and Chiang welcomed his appointment.", "title": "Rule" }, { "paragraph_id": 77, "text": "The conflict between Chiang and Li persisted. Although he had agreed to do so as a prerequisite of Li's return, Chiang refused to surrender more than a fraction of the wealth that he had sent to Taiwan. Without being backed by gold or foreign currency, the money that was issued by Li and Yan quickly declined in value until it became virtually worthless. Although he did not hold a formal executive position in the government, Chiang continued to issue orders to the army, and many officers continued to obey Chiang, rather than Li. The inability of Li to co-ordinate KMT military forces led him to put into effect a plan of defense that he had contemplated in 1948. Instead of attempting to defend all of southern China, Li ordered what remained of the Nationalist armies to withdraw to Guangxi and Guangdong. He hoped that he could concentrate all available defenses on the smaller area, which would be more easily defensible. The object of Li's strategy was to maintain a foothold on the Chinese mainland in the hope that the United States would eventually be compelled to enter the war in China on the Nationalist side.", "title": "Rule" }, { "paragraph_id": 78, "text": "Chiang opposed Li's plan of defense because it would have placed most of the troops who were still loyal to Chiang under the control of Li and Chiang's other opponents in the central government. To overcome Chiang's intransigence Li began ousting Chiang's supporters within the central government. Yan Xishan continued in his attempts to work with both sides, which created the impression among Li's supporters that he was a stooge of Chiang, and those who supported Chiang began to bitterly resent Yan for his willingness to work with Li. Because of the rivalry between Chiang and Li, Chiang refused to allow Nationalist troops loyal to him to aid in the defense of Guangxi and Canton. That let Communist forces occupy Canton in October 1949.", "title": "Rule" }, { "paragraph_id": 79, "text": "After Canton fell to the Communists, Chiang relocated the government to Chongqing, and Li effectively surrendered his powers and flew to New York for treatment of his chronic duodenum illness at the Hospital of Columbia University. Li visited President Truman, and denounced Chiang as a dictator and an usurper. Li vowed that he would \"return to crush\" Chiang once he returned to China. Li remained in exile and did not return to Taiwan.", "title": "Rule" }, { "paragraph_id": 80, "text": "In the early morning of 10 December 1949, Communist troops laid siege to Chengdu, the last KMT-controlled city in mainland China, where Chiang Kai-shek and his son Chiang Ching-kuo directed the defense at the Chengtu Central Military Academy. Flying out of Chengdu Fenghuangshan Airport, father and son were evacuated to Taiwan via Guangdong on the aircraft May-ling and arrived the same day. Chiang Kai-shek would never return to the mainland.", "title": "Rule" }, { "paragraph_id": 81, "text": "Historian Odd Arne Westad says the Communists won the Civil War because they made fewer military mistakes than Chiang had. Also, his search for a powerful centralized government made Chiang antagonize too many interest groups in China. Furthermore, his party was weakened by the war against Japan. Meanwhile, the Communists told different groups, such as peasants, exactly what they wanted to hear and cloaked themselves in the cover of Chinese nationalism.", "title": "Rule" }, { "paragraph_id": 82, "text": "Chiang did not reassume the presidency until 1 March 1950. In January 1952, Chiang commanded the Control Yuan, now in Taiwan, to impeach Li in the \"Case of Li Zongren's Failure to carry out Duties due to Illegal Conduct\" (李宗仁違法失職案). Chiang relieved Li of the position as vice-president of the National Assembly in March 1954.", "title": "Rule" }, { "paragraph_id": 83, "text": "Chiang moved the government to Taipei, Taiwan, where he resumed his duties as president on 1 March 1950. Chiang was re-elected by the National Assembly to be the President of the Republic of China on 20 May 1954, and again in 1960, 1966, and 1972. He continued to claim sovereignty over all of China, including the territories held by his government and the People's Republic, as well as territory the latter ceded to foreign governments, such as Tuva and Outer Mongolia. In the context of the Cold War, most of the Western world recognized that position, and the ROC represented China in the United Nations and other international organizations until the 1970s.", "title": "Rule" }, { "paragraph_id": 84, "text": "During his presidency on Taiwan, Chiang continued making preparations to take back mainland China. He developed the JROTC army to prepare for an invasion of the mainland and to defend Taiwan in case of an attack by the Communist forces. He also financed armed groups in mainland China, such as Muslim soldiers of the ROC Army Who had been left in Yunnan under Li Mi and continued to fight. It was not until the 1980s that those troops were finally airlifted to Taiwan. He promoted the Uyghur Yulbars Khan to governor during the Islamic insurgency on the mainland for resisting the Communists even though the government had already evacuated to Taiwan. He planned an invasion of the mainland in 1962. In the 1950s, Chiang's airplanes dropped supplies to Kuomintang Muslim insurgents in Qinghai, in the traditional Tibetan area of Amdo.", "title": "Rule" }, { "paragraph_id": 85, "text": "Despite an ostensibly democratic constitution, the government under Chiang was a de facto one-party state, consisting almost completely of mainlanders; the \"Temporary Provisions Effective During the Period of Communist Rebellion\" greatly enhanced the executive's powers, and the goal of retaking mainland China allowed the KMT to maintain a monopoly on power and to prohibit real parliamentary opposition. The government's official line for the martial law provisions stemmed from the claim that emergency provisions were necessary since the Communists and the Nationalists were still in a state of war. Seeking to promote Chinese nationalism, Chiang's government actively ignored and suppressed local cultural expression and even forbade the use of local languages in mass media broadcasts or during class sessions. As a result of Taiwan's anti-government uprising in 1947, known as the February 28 incident, the KMT-led political repression resulted in the death or the disappearance of up to 30,000 Taiwanese intellectuals, activists, and people suspected of opposition to the KMT.", "title": "Rule" }, { "paragraph_id": 86, "text": "The first decades after the Nationalists had moved the seat of government to the province of Taiwan are associated with the organized effort to resist Communism, which was known as the \"White Terror\"; about 140,000 Taiwanese were imprisoned for their real or perceived opposition to the Kuomintang. Most of those prosecuted were labeled by the Kuomintang as \"bandit spies\" (匪諜), meaning spies for Chinese Communists, and punished as such or \"Taiwanese Separatists\" (台獨分子).", "title": "Rule" }, { "paragraph_id": 87, "text": "Under the pretext that new elections could not be held in Communist-occupied constituencies, the National Assembly, Legislative Yuan, and Control Yuan members held their posts indefinitely. The Temporary Provisions also allowed Chiang to remain as president beyond the two-term limit in the Constitution. He was re-elected by the National Assembly as president four times: in 1954, 1960, 1966, and 1972.", "title": "Rule" }, { "paragraph_id": 88, "text": "Believing that corruption and the lack of morals were key reasons that the KMT had lost mainland China to the Communists, Chiang attempted to purge corruption by dismissing members of the KMT who were accused of graft. Some major figures in the previous mainland Chinese government, such as Chiang's brothers-in-law H. H. Kung and T.V. Soong, exiled themselves to the United States. Although politically authoritarian and, to some extent, dominated by government-owned industries, Chiang's new Taiwanese state also encouraged economic development, especially in the export sector. A popular sweeping Land Reform Act, as well as American foreign aid during the 1950s, laid the foundation for Taiwan's economic success to become one of the Four Asian Tigers. After retreating to Taiwan, Chiang learned from his mistakes and failures in the mainland and blamed them for failing to pursue Sun Yat-sen's ideals of Tridemism and welfarism. Chiang's land reform more than doubled the land ownership of Taiwanese farmers. It removed the rent burdens on them, with former landowners using the government compensation to become the new capitalist class. He promoted a mixed economy of state and private ownership with economic planning. Chiang also promoted a nine-year free education and the importance of science in Taiwanese education and values. Those measures generated great success, with consistent and strong growth and the stabilization of inflation.", "title": "Rule" }, { "paragraph_id": 89, "text": "After the government of the Republic of China had moved to Taiwan, Chiang Kai-shek's economic policy turned towards to economic liberalism and used Sho-Chieh Tsiang and other liberal economists to promote economic liberalization reforms in Taiwan.", "title": "Rule" }, { "paragraph_id": 90, "text": "However, Taylor has noted that the developmental model of Chiangism in Taiwan still had elements of socialism, and the Gini index of Taiwan was around 0.28 by the 1970s, which was lower than the relatively-egalitarian West Germany. ROC (Taiwan) was one of the most equal countries in the pro-western bloc. Those in the lower 40% of income doubled their share to 22% of the total income, with the upper 20% shrinking their share from 61% to 39%, from the time of Japanese rule. The Chiangist economic model can be seen as a form of dirigisme, with the state playing a crucial role in directing the market economy. Small businesses and state-owned enterprises in Taiwan flourished under the economic model, but the economy did not see the emergence of corporate monopolies, unlike in most other major capitalist countries.", "title": "Rule" }, { "paragraph_id": 91, "text": "After the democratization of Taiwan, it began to slowly drift away from the Chiangist economic policy to embrace a more free market system, as part of the economic globalization process under the context of neoliberalism.", "title": "Rule" }, { "paragraph_id": 92, "text": "Chiang had the personal power to review the rulings of all military tribunals, which during the martial law period tried civilians as well. In 1950, Lin Pang-chun and two other men were arrested on charges of financial crimes and sentenced to 3–10 years in prison. Chiang reviewed the sentences of all three and ordered them executed instead. In 1954, the Changhua monk Kao Chih-te and two others were sentenced to 12 years in prison for providing aid to accused communists. Chiang sentenced them to death after he had reviewed the case. That control over the decision of military tribunals violated the ROC constitution.", "title": "Rule" }, { "paragraph_id": 93, "text": "After Chiang's death, the next president, his son, Chiang Ching-kuo, and Chiang Ching-kuo's successor, Lee Teng-hui, a native Taiwanese, would in the 1980s and 1990s increase native Taiwanese representation in the government and loosen the many authoritarian controls of the early era of ROC control in Taiwan, paving way for the democratization process.", "title": "Rule" }, { "paragraph_id": 94, "text": "In 1971, the former Australian opposition leader Gough Whitlam became Prime Minister in 1972, and swiftly relocated the Australian mission from Taipei to Beijing, visited Japan. After meeting with Japanese Prime Minister Eisaku Sato Whitlam observed that the reason that Japan was hesitant to withdraw recognition from the Nationalist government was \"the presence of a treaty between the Japanese government and that of Chiang Kai-shek.\" Sato explained that the continued recognition of Japan towards the Nationalist government was largely because of the personal relationship that various members of the Japanese government felt towards Chiang. This relationship was rooted largely in the generous and lenient treatment of Japanese prisoners-of-war by the Nationalist government in the years immediately after the Japanese surrender in 1945, and was felt especially strongly as a bond of personal obligation by the most senior members who were in power.", "title": "Rule" }, { "paragraph_id": 95, "text": "Although Japan recognized the People's Republic in 1972, shortly after Kakuei Tanaka had succeeded Sato as Prime Minister of Japan, the memory of the relationship was strong enough to be reported by The New York Times (15 April 1978) as a significant factor inhibiting trade between Japan and the mainland. There is speculation that a clash between Communist forces and a Japanese warship in 1978 was caused by Chinese anger by Japanese Prime Minister Takeo Fukuda attending Chiang's funeral. Historically, Japan's attempts to normalize its relationship with the People's Republic were met with accusations of ingratitude in Taiwan.", "title": "Rule" }, { "paragraph_id": 96, "text": "Chiang was suspicious that covert operatives of the United States were plotting a coup against him.", "title": "Rule" }, { "paragraph_id": 97, "text": "In 1950, Chiang Ching-kuo became director of the secret police (Bureau of Investigation and Statistics), which he remained until 1965. Chiang Kai-shek was also suspicious of politicians who were overly friendly to the United States and considered them his enemies. In 1953, seven days after surviving an assassination attempt, Wu Kuo-chen lost his position as governor of Taiwan Province to Chiang Ching-kuo. After fleeing to United States the same year, Wu became a vocal critic of Chiang's family and government.", "title": "Rule" }, { "paragraph_id": 98, "text": "Chiang Ching-kuo, who had been educated in the Soviet Union, initiated Soviet-style military organization in the Republic of China Armed Forces. He reorganized and Sovietized the political officer corps and propagated Kuomintang ideology throughout the military. Sun Li-jen, who had been educated at the American Virginia Military Institute, opposed those practices.", "title": "Rule" }, { "paragraph_id": 99, "text": "Chiang Ching-kuo orchestrated the controversial court-martial and arrest of General Sun Li-jen in August 1955 for plotting a coup d'état with the CIA against his father, Chiang Kai-shek, and the Kuomintang. The CIA allegedly wanted to help Sun take control of Taiwan and declare its independence.", "title": "Rule" }, { "paragraph_id": 100, "text": "In 1975, after Chiang had come to Taiwan 26 years earlier, he died in Taipei at the age of 87. He had suffered a heart attack and pneumonia in the foregoing months and died from kidney failure aggravated with advanced heart failure on 5 April. Chiang's funeral was held on 16 April.", "title": "Death" }, { "paragraph_id": 101, "text": "A month of mourning was declared. The Chinese music composer Hwang Yau-tai wrote the \"Chiang Kai-shek Memorial Song.\" In mainland China, however, Chiang's death was met with little apparent mourning, and Communist state-run newspapers gave the brief headline \"Chiang Kai-shek Has Died\". Chiang's body was put in a copper coffin and temporarily interred at his favorite residence in Cihu, Daxi, Taoyuan. His funeral was attended by dignitaries from many nations, including US Vice President Nelson Rockefeller, South Korean Prime Minister Kim Jong-pil, and two former Japanese prime ministers: Nobusuke Kishi and Eisaku Sato. Chiang Kai-shek Memorial Day [zh] (蔣公逝世紀念日) was established on 5 April. The memorial day was disestablished in 2007.", "title": "Death" }, { "paragraph_id": 102, "text": "The response by Japanese media was swift and shaped by a cult of personality around Chiang Kai-shek. Japanese conservatives had long promoted to counter the China policy and the historical narratives of their leftist pro-PRC opponents. The nationalist leader of Taiwan had been trained in Japanese military schools and shared a particular fondness for the Japanese Empire.", "title": "Death" }, { "paragraph_id": 103, "text": "When his son, Chiang Ching-kuo, died in 1988, he was entombed in a separate mausoleum in nearby Touliao. The hope was to have both of them buried at their birthplace in Fenghua when that would be possible. In 2004, Chiang Fang-liang, the widow of Chiang Ching-kuo, asked for both father and son to be buried at Wuzhi Mountain Military Cemetery in Xizhi, Taipei County (now New Taipei City). Chiang's ultimate funeral ceremony became a political battle between the wishes of the state and those of his family.", "title": "Death" }, { "paragraph_id": 104, "text": "Chiang was succeeded as president by Vice President Yen Chia-kan and as Kuomintang party ruler by his son Chiang Ching-kuo, who retired Chiang Kai-shek's title of Director-General and instead assumed the position of chairman. Yen's presidency was interim; Chiang Ching-kuo, who was the Premier, became president after the end of Yen's term three years later.", "title": "Death" }, { "paragraph_id": 105, "text": "Chiang's portrait hung over Tiananmen Square until 1949, when it was replaced with Mao's portrait. Portraits of Chiang were common in private homes and in public on the streets. After his death, the Chiang Kai-shek Memorial Song was written in 1988 to commemorate Chiang Kai-shek. In Cihu, there are several statues of Chiang Kai-shek.", "title": "Cult of personality" }, { "paragraph_id": 106, "text": "Chiang was popular among many people and dressed in plain, simple clothes, unlike contemporary Chinese warlords who dressed extravagantly.", "title": "Cult of personality" }, { "paragraph_id": 107, "text": "Quotes from the Quran and hadith were used by Muslims in the Kuomintang-controlled Muslim publication, the Yuehua, to justify Chiang Kai-shek's rule over China. When the Muslim general and warlord Ma Lin was interviewed, he was described as having \"high admiration for and unwavering loyalty to Chiang Kai-shek\".", "title": "Cult of personality" }, { "paragraph_id": 108, "text": "The Kuomintang used traditional Chinese religious ceremonies, and promulgated martyrdom. Kuomintang ideology subserved and promulgated the view that the souls of Party martyrs who died fighting for the Kuomintang, the revolution, and the party founder Dr. Sun Yat-sen were sent to heaven. Chiang Kai-shek believed that these martyrs witnessed events on Earth from heaven after their deaths.", "title": "Philosophy" }, { "paragraph_id": 109, "text": "Unlike Sun's original Tridemist ideology that was heavily influenced by Western enlightenment theorists such as Henry George, Abraham Lincoln, Bertrand Russell, and John Stuart Mill, the traditional Chinese Confucian influence on Chiang's ideology is much stronger. Chiang rejected the Western progressive ideologies of individualism, liberalism, and the cultural aspects of Marxism. Therefore, Chiang is generally more culturally and socially conservative than Sun Yat-sen. Jay Taylor has described Chiang Kai-shek as a revolutionary nationalist and a \"left-leaning Confucian-Jacobinist\".", "title": "Philosophy" }, { "paragraph_id": 110, "text": "When the Northern Expedition was complete, Kuomintang Generals led by Chiang Kai-shek paid tribute to Dr. Sun's soul in heaven with a sacrificial ceremony at the Xiangshan Temple in Beijing in July 1928. Among the Kuomintang Generals present were the Muslim Generals Bai Chongxi and Ma Fuxiang.", "title": "Philosophy" }, { "paragraph_id": 111, "text": "Chiang Kai-shek considered both Han Chinese and all ethnic minorities of China, the Five Races Under One Union, as descendants of the Yellow Emperor, the mythical founder of the Chinese nation, and belonging to the Chinese Nation Zhonghua Minzu. He introduced this into Kuomintang ideology which was propagated into the educational system of the Republic of China.", "title": "Philosophy" }, { "paragraph_id": 112, "text": "Chiang, as a Chinese nationalist and a Confucian, was against the iconoclasm of the May Fourth Movement. Motivated by his sense of nationalism, he viewed some Western ideas as foreign and believed that the great introduction of Western ideas and literature, which the May Fourth Movement promoted, was not beneficial to China. He and Sun criticized the May Fourth intellectuals as corrupting the morals of China's youth.", "title": "Philosophy" }, { "paragraph_id": 113, "text": "Chiang Kai-shek once said:", "title": "Philosophy" }, { "paragraph_id": 114, "text": "If when I die, I am still a dictator, I will certainly go down into the oblivion of all dictators. If, on the other hand, I succeed in establishing a truly stable foundation for a democratic government, I will live forever in every home in China.", "title": "Philosophy" }, { "paragraph_id": 115, "text": "Chiang's legacy has been subjected to heated debates because of the different views held about him. For some, Chiang was a national hero who led the victorious Northern Expedition against the Beiyang warlords in 1927 and helped achieve Chinese unification. His initial image as the leader of China against Japan's invasion, both before and after the attack on Pearl Harbor, led him to be featured on the cover of Time magazine ten times. Even though China received little American aid compared to Britain and the Soviet Union, it did not fold, as Chiang called on his countrymen to fight to the \"bitter end\" until their ultimate victory against Japan in 1945.", "title": "Contemporary perception" }, { "paragraph_id": 116, "text": "Some also see him as a champion of anti-communism, being a key figure during the formative years of the World Anti-Communist League. During the subsequent Cold War, he was seen as the leader who led Free China and the bulwark against a possible communist invasion. However, historian Rudolph Rummel documented that the Nationalist government under Chiang led to millions of excess deaths from calamities such as its persecution against actual or perceived communists and its conscription of soldiers, confiscation of food, and flooding of downstream regions of the Yellow River during the Second Sino-Japanese War. His government was also accused of being corrupt and allying with known criminals such as Du Yuesheng for political and financial gains, and his critics often accuse him of fascism. In Taiwan, he ruled throughout a period of martial law. Some opponents charge that Chiang's efforts in developing the island were mostly to turn it into a strong base from which to recover mainland China and that he had little regard for the Taiwanese people.", "title": "Contemporary perception" }, { "paragraph_id": 117, "text": "Unlike Chiang's son Chiang Ching-kuo, who is respected across the political spectrum, Chiang Kai-shek's image is perceived rather negatively in Taiwan. He was rated the lowest in two opinion polls about the perception of former presidents. His popularity in Taiwan is divided along political lines, enjoying better support in the Kuomintang (KMT) while being widely unpopular among Democratic Progressive Party (DPP) voters and those who blame him for the thousands killed during the February 28 Incident and criticise his dictatorial rule.", "title": "Contemporary perception" }, { "paragraph_id": 118, "text": "In contrast, his image has partially improved in mainland China. He had been portrayed as a villain and a \"bourgeoisie reactionary lackey\" who fought against the \"liberation\" of China by the communists, but since the 2000s, the media and popular culture have depicted him in a less negative manner. For example, many praised the 2009 movie sponsored by the Chinese Communist Party, The Founding of a Republic, for moving away from casting Chiang as 'evil' versus Mao and emphasizing instead that the contingencies of war led the communists to victory. In the context of the Second Sino-Japanese War, aspects of Chiang's trip to India, or meeting with Roosevelt and Churchill in Cairo can be viewed positively. The shift also takes into account Chiang's commitment to a unified China and his stance against Taiwanese separatism. Chiang's ancestral home in Fenghua, Zhejiang has become a museum and tourist attraction. Historian Rana Mitter notes that the displays inside were very positive about Chiang's role during the Second Sino-Japanese War.", "title": "Contemporary perception" }, { "paragraph_id": 119, "text": "Mitter further observed that, ironically, today's China is closer to Chiang's vision than to Mao's and wrote, \"One can imagine Chiang Kai-shek's ghost wandering round China today nodding in approval, while Mao's ghost follows behind him, moaning at the destruction of his vision\". Liang Shuming opined that Chiang Kai-shek's \"greatest contribution was to make the CCP successful. If he had been a bit more trustworthy, if his character was somewhat better, the CCP would have been unable to beat him\". Some Chinese historians argue that the main determinants for Chiang's defeat were not corruption or the lack of US support, but his decision to start the civil war with 70% of government expenditures in the military, his overestimation of the Nationalist forces equipped with US arms, and the loss of popularity and morales of his soldiers. Other historians argue that his failure was largely caused by external factors outside of Chiang's control. They include the refusal of the Truman administration to support Chiang by withdrawing aid, the foisting of an arms embargo by George C. Marshall, the failed pursuit of a détente between the nationalists and the communists, the American push for a coalition government with the CCP, and the USSR's consistent aid and support for the CCP during the civil war.", "title": "Contemporary perception" }, { "paragraph_id": 120, "text": "In the United States and Europe, Chiang was often perceived negatively as the one who lost China to the communists. His persistent demands for United States support and funding also prompted jokes from American officials that Chiang's name was actually General \"Cash-My-Check\". He has also been criticized for his poor military skills, such as issuing unrealistic orders and persistently attempting to fight unwinnable battles, leading to the loss of his best troops. In recent years, Chiang's image has been somewhat rehabilitated, and he has been increasingly perceived as a man overwhelmed by the events in China, having to fight the communists, Japanese, and provincial warlords simultaneously while trying to reconstruct and unify the country. His sincere, albeit often unsuccessful attempts to build a more powerful and modern nation have been noted by scholars such as Jonathan Fenby, Rana Mitter, and biographer Jay Taylor.", "title": "Contemporary perception" }, { "paragraph_id": 121, "text": "In 1901, in an arranged marriage at age 14, Chiang was married to Mao Fumei, an illiterate villager five years his senior. While married to Mao, Chiang adopted two concubines (concubinage was still a common practice for well-to-do, non-Christian males in China): he took Yao Yecheng (姚冶誠, 1887–1966) as concubine in late 1912 and married Chen Jieru (1906–1971) in December 1921. While he was still living in Shanghai, Chiang and Yao adopted a son, Wei-kuo Chen adopted a daughter in 1924, named Yaoguang, who later adopted her mother's surname. Chen's autobiography refuted the idea that she was a concubine. Chen claiming that, by the time she married Chiang, he had already divorced Yao, and that Chen was therefore his wife. Chiang and Mao had a son, Ching-kuo.", "title": "Family" }, { "paragraph_id": 122, "text": "According to the memoirs of Chen Jieru, Chiang's second wife (Chen Jieru) contracted gonorrhea from Chiang soon after their marriage. He told her that he acquired this disease after separating from his first wife and living with his concubine Yao Yecheng, as well as with many other women he consorted with. His doctor explained to her that Chiang had sex with her before completing his treatment for the disease. As a result, both Chiang and Chen Jieru believed that they had become sterile; however, a purported miscarriage by Soong Mei-ling in August 1928 would, if it actually occurred, cast serious doubt on whether this was true.", "title": "Family" }, { "paragraph_id": 123, "text": "The Xikou Chiangs were descended from Chiang Shih-chieh, who during the 1600s moved there from Fenghua district, and whose ancestors in turn came to southeastern China's Zhejiang (Chekiang) province after moving out of Northern China in the 13th century CE. The 12th century BCE Duke of Zhou's (Duke of Chou) third son was the ancestors of the Chiangs.", "title": "Family" }, { "paragraph_id": 124, "text": "His great-grandfather was Chiang Qi-zeng, his grandfather was Chiang Si-qian, his uncle was Chiang Zhao-hai, and his father was Chiang Zhao-cong.", "title": "Family" }, { "paragraph_id": 125, "text": "Chiang personally dealt extensively with religions, power figures, and factions in China during his regime.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 126, "text": "Chiang Kai-shek was born and raised as a Buddhist, but became a Methodist upon his marriage to his fourth wife, Soong Mei-ling. It was previously believed that this was a political move, but further studies of his personal diaries suggest that his faith was sincere.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 127, "text": "Chiang developed relationships with other generals. Chiang became a sworn brother of the Chinese Muslim general Ma Fuxiang and appointed him to high ranking positions. Chiang addressed Ma Fuxiang's son Ma Hongkui as Shao Yun Shixiong Ma Fuxiang attended national leadership conferences with Chiang during battles against Japan. Ma Hongkui was eventually scapegoated for the failure of the Ningxia Campaign against the Communists, so he moved to the US instead of remaining in Taiwan with Chiang.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 128, "text": "When Chiang became President of China after the Northern Expedition, he carved out Ningxia and Qinghai out of Gansu province, and appointed Muslim generals as military governors of all three provinces: Ma Hongkui, Ma Hongbin, and Ma Qi. The three Muslim governors, known as Xibei San Ma (lit. \"the three Mas of the Northwest\"), controlled armies composed entirely of Muslims. Chiang called on the three and their subordinates to wage war against the Soviet peoples, Tibetans, Communists, and the Japanese. Chiang continued to appoint Muslims as governors of the three provinces, including Ma Lin and Ma Fushou. Chiang's appointments, the first time that Muslims had been appointed as governors of Gansu, increased the prestige of Muslim officials in northwestern China. The armies raised by this \"Ma Clique\", most notably their Muslim cavalry, were incorporated into the KMT army. Chiang appointed Hui general Bai Chongxi as the Minister of National Defence of the Republic of China, which controlled the ROC military.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 129, "text": "Chiang also supported the Muslim General Ma Zhongying, whom he had trained at Whampoa Military Academy during the Kumul Rebellion, in a jihad against Jin Shuren, Sheng Shicai, and the Soviet Union during the Soviet Invasion of Xinjiang. Chiang designated Ma's Muslim army as the 36th Division (National Revolutionary Army) and gave his troops KMT flags and uniforms. Chiang then supported Muslim General Ma Hushan against Sheng and the Soviet Union in the Xinjiang War (1937). All Muslim generals commissioned by Chiang in the National Revolutionary Army swore allegiance to him. Several, like Ma Shaowu and Ma Hushan were loyal to Chiang and Kuomintang hardliners.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 130, "text": "The Ili Rebellion and Pei-ta-shan Incident plagued relations with the Soviet Union during Chiang's rule and caused trouble with the Uyghurs. During the Ili Rebellion and Peitashan incident, Chiang deployed Hui troops against Uyghur mobs in Turfan, and against Soviet Russian and Mongols at Peitashan.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 131, "text": "During Chiang's rule, attacks on foreigners and ethnic minorities by the allied warlords of the Nationalist government such as the Ma Clique flared up in several incidents. One of these was the Battle of Kashgar where a Muslim army loyal to the Kuomintang massacred 4,500 Uyghurs, and killed several Britons at the British consulate in Kashgar.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 132, "text": "Hu Songshan, a Muslim Imam, backed Chiang Kai-shek's regime and gave prayers for his government. ROC flags were saluted by Muslims in Ningxia during prayer along with exhortations to nationalism during Chiang's rule. Chiang sent Muslim students abroad to study at places like Al-Azhar University and Muslim schools throughout China that taught loyalty to his regime.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 133, "text": "The Yuehua, a Chinese Muslim publication, quoted the Quran and hadith to justify submitting to Chiang Kai-shek as the leader of China, and as justification for Jihad in the war against Japan.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 134, "text": "The Yihewani (Ikhwan al Muslimun a.k.a. Muslim brotherhood) was the predominant Muslim sect backed by the Chiang government during Chiang's regime. Other Muslim sects, like the Xidaotang and Sufi brotherhoods like Jahriyya and Khuffiya were also supported by his regime. The Chinese Muslim Association, a pro-Kuomintang and anti-Communist organization, was set up by Muslims working in his regime. Salafists attempted to gain a foothold in China during his regime, but the Yihewani and Hanafi Sunni Gedimu denounced the Salafis as radicals, engaged in fights against them, and declared them heretics, forcing the Salafis to form a separate sect. Ma Ching-chiang, a Muslim General, served as an advisor to Chiang Kai-shek. Ma Buqing was another Muslim General who fled to Taiwan along with Chiang. His government donated money to build the Taipei Grand Mosque on Taiwan.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 135, "text": "Chiang had uneasy relations with the Tibetans. He fought against them in the Sino-Tibetan War, and he supported the Muslim General Ma Bufang in his war against Tibetan rebels in Qinghai. Chiang ordered Ma Bufang to prepare his Islamic army to invade Tibet several times, to deter Tibetan independence, and threatened the Tibetans with aerial bombardment. Ma Bufang attacked the Tibetan Buddhist Tsang monastery in 1941. After the war, Chiang appointed Ma Bufang as ambassador to Saudi Arabia.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 136, "text": "Chiang incorporated Methodist values into the New Life Movement under the influence of his wife. Dancing and Western music were discouraged. In one incident, several youths splashed acid on people wearing Western clothing, although Chiang was not directly responsible for these incidents. Despite being a Methodist, he made reference to the Buddha in his diary, and encouraged the establishment of a Buddhist political party under Master Taixu.", "title": "Religion and relationships with religious communities" }, { "paragraph_id": 137, "text": "According to Jehovah's Witnesses' magazine The Watchtower, some of their members travelled to Chongqing and spoke to him personally while distributing their literature there during World War II.", "title": "Religion and relationships with religious communities" } ]	Chiang Kai-shek was a Chinese politician, revolutionary, and military leader who served as the leader of the Republic of China (ROC) and the Generalissimo of the National Revolutionary Army. He held these positions in mainland China from 1928 until 1949, when his nationalist Kuomintang (KMT) party was defeated in the Chinese Civil War by the Chinese Communist Party (CCP)—thereafter, he led the remnant of the ROC government on the island of Taiwan until his death. Born in Zhejiang, Chiang was a member of the Kuomintang, and a lieutenant of Sun Yat-sen in the revolution to overthrow the Beiyang government and reunify China. With help from the Soviets and the Chinese Communist Party, Chiang organized the military for Sun's Canton Nationalist Government and headed the Whampoa Military Academy. As commander-in-chief of the National Revolutionary Army, he led the Northern Expedition from 1926 to 1928, before defeating a coalition of warlords and nominally reunifying China under a new nationalist government. Midway through the Northern Expedition, the KMT–CCP alliance broke down and Chiang massacred communists and KMT leftists inside the party, triggering a civil war with the CCP, which he eventually lost in 1949. As the leader of the Republic of China during the Nanjing decade, Chiang sought to strike a difficult balance between modernizing China, while also devoting resources to defending the nation against the CCP, warlords, and the impending Japanese threat. Trying to avoid a war with Japan while hostilities with the CCP continued, he was kidnapped in the Xi'an Incident, and obliged to form an Anti-Japanese United Front with the CCP. Following the Marco Polo Bridge Incident in 1937, he mobilized China for the Second Sino-Japanese War. For eight years, he led the war of resistance against a vastly superior enemy, mostly from the wartime capital Chongqing. As the leader of a major Allied power, Chiang met with British prime minister Winston Churchill and American president Franklin D. Roosevelt in the Cairo Conference to discuss terms for the Japanese surrender. When the Second World War ended, the Civil War with the communists resumed. Chiang's nationalists were mostly defeated in a few decisive battles in 1948. In 1949, Chiang's government and army retreated to the island of Taiwan, where Chiang imposed martial law and persecuted critics during the White Terror. Presiding over a period of social reforms and economic prosperity, Chiang won five elections to six-year terms as President of the Republic of China in which he faced minimal opposition or was elected unopposed. Three years into his fifth term as president, and one year before the death of Mao, he died in 1975. He also held the position of director-general within the Kuomintang until his death. Chiang was one of the longest-serving non-royal heads of state in the 20th century and the longest-serving non-royal ruler of China, having held the post for 46 years. Like Mao, Chiang is regarded as a controversial figure. Supporters credit him with playing a major part in unifying the nation, leading the Chinese resistance against Japan, and countering CCP influence and economic development in both mainland China and Taiwan. Detractors and critics denounce him as a brutal dictator at the front of a corrupt authoritarian regime that massacred civilians and suppressed political dissents, and often accuse him of being a fascist. He is also criticized for flooding the Yellow River, a move that subsequently caused the Henan Famine during the Second Sino-Japanese War. Other historians argued that despite his many faults, Chiang's ideology notably differs from other right-wing dictators of the 20th century, and he did not genuinely espouse the ideology of fascism. They argue that Chiang made genuine efforts to improve mainland China and Taiwan's economic and social conditions, such as improving women's rights and land reform. Chiang was also credited with transforming China from a semi-colony of various imperialist powers to an independent country by amending the unequal treaties signed by previous governments, as well as moving various Chinese national treasures and traditional Chinese artworks to the National Palace Museum in Taipei during the 1949 retreat.	2001-10-25T12:11:56Z	2023-12-13T23:32:16Z	[ "Template:Rp", "Template:Refend", "Template:S-aft", "Template:PLH Recipients", "Template:Cite web", "Template:Sister project links", "Template:KMTleaders", "Template:Wikisource", "Template:Nbsp", "Template:Cite episode", "Template:Cold War", "Template:Short description", "Template:Sfnp", "Template:Circa", "Template:S-end", "Template:Anchor", "Template:Clear", "Template:S-bef", "Template:Sfnb", "Template:Conservatism sidebar", "Template:More citations needed", "Template:Cite book", "Template:Webarchive", "Template:Family name hatnote", "Template:Convert", "Template:Nowrap", "Template:Presidents of the Republic of China", "Template:Citation needed", "Template:Chiang family tree", "Template:S-mil", "Template:S-non", "Template:S-aca", "Template:Zh", "Template:Ill", "Template:S-ttl", "Template:S-new", "Template:Conservatism", "Template:Authority control", "Template:Blockquote", "Template:Citation", "Template:Warlord era", "Template:PM20", "Template:Lang", "Template:See also", "Template:Portal", "Template:Time Persons of the Year", "Template:Infobox officeholder", "Template:Cite news", "Template:S-ppo", "Template:Use dmy dates", "Template:Reflist", "Template:S-off", "Template:Efn", "Template:Refbegin", "Template:S-start", "Template:In lang", "Template:ROCPMs", "Template:Request quotation", "Template:Cite journal", "Template:ISBN", "Template:Chinese Civil War", "Template:Sfn", "Template:Linktext", "Template:Main" ]	https://en.wikipedia.org/wiki/Chiang_Kai-shek
6,863	Compression ratio	The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values. A fundamental specification for such engines, it is measured two ways: the static compression ratio, calculated based on the relative volumes of the combustion chamber and the cylinder when the piston is at the bottom of its stroke, and the volume of the combustion chamber when the piston is at the top of its stroke. The dynamic compression ratio is a more advanced calculation which also takes into account gasses entering and exiting the cylinder during the compression phase. A high compression ratio is desirable because it allows an engine to extract more mechanical energy from a given mass of air–fuel mixture due to its higher thermal efficiency. This occurs because internal combustion engines are heat engines, and higher compression ratios permit the same combustion temperature to be reached with less fuel, while giving a longer expansion cycle, creating more mechanical power output and lowering the exhaust temperature. In petrol (gasoline) engines used in passenger cars for the past 20 years, compression ratios have typically been between 8:1 and 12:1. Several production engines have used higher compression ratios, including: When forced induction (e.g. a turbocharger or supercharger) is used, the compression ratio is often lower than naturally aspirated engines. This is due to the turbocharger/supercharger already having compressed the air before it enters the cylinders. Engines using port fuel-injection typically run lower boost pressures and/or compression ratios than direct injected engines because port fuel injection causes the air/fuel mixture to be heated together, leading to detonation. Conversely, directly injected engines can run higher boost because heated air will not detonate without a fuel being present. Higher compression ratios can make gasoline (petrol) engines subject to engine knocking (also known as "detonation", "pre-ignition" or "pinging") if lower octane-rated fuel is used. This can reduce efficiency or damage the engine if knock sensors are not present to modify the ignition timing. Diesel engines use higher compression ratios than petrol engines, because the lack of a spark plug means that the compression ratio must increase the temperature of the air in the cylinder sufficiently to ignite the diesel using compression ignition. Compression ratios are often between 14:1 and 23:1 for direct injection diesel engines, and between 18:1 and 23:1 for indirect injection diesel engines. At the lower end of 14:1, NOx emissions are reduced at a cost of more difficult cold-start. Mazda's Skyactiv-D, the first such commercial engine from 2013, used adaptive fuel injectors among other techniques to ease cold start. The compression ratio may be higher in engines running exclusively on liquefied petroleum gas (LPG or "propane autogas") or compressed natural gas, due to the higher octane rating of these fuels. Kerosene engines typically use a compression ratio of 6.5 or lower. The petrol-paraffin engine version of the Ferguson TE20 tractor had a compression ratio of 4.5:1 for operation on tractor vaporising oil with an octane rating between 55 and 70. Motorsport engines often run on high octane petrol and can therefore use higher compression ratios. For example, motorcycle racing engines can use compression ratios as high as 14.7:1, and it is common to find motorcycles with compression ratios above 12.0:1 designed for 95 or higher octane fuel. Ethanol and methanol can take significantly higher compression ratios than gasoline. Racing engines burning methanol and ethanol fuel often have a compression ratio of 14:1 to 16:1. In a piston engine, the static compression ratio ( C R {\displaystyle CR} ) is the ratio between the volume of the cylinder and combustion chamber when the piston is at the bottom of its stroke, and the volume of the combustion chamber when the piston is at the top of its stroke. It is therefore calculated by the formula Where: V d {\displaystyle V_{d}} can be estimated by the cylinder volume formula Where: Because of the complex shape of V c {\displaystyle V_{c}} it is usually measured directly. This is often done by filling the cylinder with liquid and then measuring the volume of the used liquid. Most engines use a fixed compression ratio, however a variable compression ratio engine is able to adjust the compression ratio while the engine is in operation. The first production engine with a variable compression ratio was introduced in 2019. Variable compression ratio is a technology to adjust the compression ratio of an internal combustion engine while the engine is in operation. This is done to increase fuel efficiency while under varying loads. Variable compression engines allow the volume above the piston at top dead centre to be changed. Higher loads require lower ratios to increase power, while lower loads need higher ratios to increase efficiency, i.e. to lower fuel consumption. For automotive use this needs to be done as the engine is running in response to the load and driving demands. The 2019 Infiniti QX50 is the first commercially available car that uses a variable compression ratio engine. The static compression ratio discussed above — calculated solely based on the cylinder and combustion chamber volumes — does not take into account any gasses entering or exiting the cylinder during the compression phase. In most automotive engines, the intake valve closure (which seals the cylinder) takes place during the compression phase (i.e. after bottom dead centre, BDC), which can cause some of the gasses to be pushed back out through the intake valve. On the other hand, intake port tuning and scavenging can cause a greater amount of gas to be trapped in the cylinder than the static volume would suggest. The dynamic compression ratio accounts for these factors. The dynamic compression ratio is higher with more conservative intake camshaft timing (i.e. soon after BDC), and lower with more radical intake camshaft timing (i.e. later after BDC). Regardless, the dynamic compression ratio is always lower than the static compression ratio. Absolute cylinder pressure is used to calculate the dynamic compression ratio, using the following formula: Under ideal (adiabatic) conditions, the ratio of specific heats would be 1.4, but a lower value, generally between 1.2 and 1.3 is used, since the amount of heat lost will vary among engines based on design, size and materials used. For example, if the static compression ratio is 10:1, and the dynamic compression ratio is 7.5:1, a useful value for cylinder pressure would be 7.5 × atmospheric pressure, or 13.7 bar (relative to atmospheric pressure). The two corrections for dynamic compression ratio affect cylinder pressure in opposite directions, but not in equal strength. An engine with high static compression ratio and late intake valve closure will have a dynamic compression ratio similar to an engine with lower compression but earlier intake valve closure.	[ { "paragraph_id": 0, "text": "The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values.", "title": "" }, { "paragraph_id": 1, "text": "A fundamental specification for such engines, it is measured two ways: the static compression ratio, calculated based on the relative volumes of the combustion chamber and the cylinder when the piston is at the bottom of its stroke, and the volume of the combustion chamber when the piston is at the top of its stroke.", "title": "" }, { "paragraph_id": 2, "text": "The dynamic compression ratio is a more advanced calculation which also takes into account gasses entering and exiting the cylinder during the compression phase.", "title": "" }, { "paragraph_id": 3, "text": "A high compression ratio is desirable because it allows an engine to extract more mechanical energy from a given mass of air–fuel mixture due to its higher thermal efficiency. This occurs because internal combustion engines are heat engines, and higher compression ratios permit the same combustion temperature to be reached with less fuel, while giving a longer expansion cycle, creating more mechanical power output and lowering the exhaust temperature.", "title": "Effect and typical ratios" }, { "paragraph_id": 4, "text": "In petrol (gasoline) engines used in passenger cars for the past 20 years, compression ratios have typically been between 8:1 and 12:1. Several production engines have used higher compression ratios, including:", "title": "Effect and typical ratios" }, { "paragraph_id": 5, "text": "When forced induction (e.g. a turbocharger or supercharger) is used, the compression ratio is often lower than naturally aspirated engines. This is due to the turbocharger/supercharger already having compressed the air before it enters the cylinders. Engines using port fuel-injection typically run lower boost pressures and/or compression ratios than direct injected engines because port fuel injection causes the air/fuel mixture to be heated together, leading to detonation. Conversely, directly injected engines can run higher boost because heated air will not detonate without a fuel being present.", "title": "Effect and typical ratios" }, { "paragraph_id": 6, "text": "Higher compression ratios can make gasoline (petrol) engines subject to engine knocking (also known as \"detonation\", \"pre-ignition\" or \"pinging\") if lower octane-rated fuel is used. This can reduce efficiency or damage the engine if knock sensors are not present to modify the ignition timing.", "title": "Effect and typical ratios" }, { "paragraph_id": 7, "text": "Diesel engines use higher compression ratios than petrol engines, because the lack of a spark plug means that the compression ratio must increase the temperature of the air in the cylinder sufficiently to ignite the diesel using compression ignition. Compression ratios are often between 14:1 and 23:1 for direct injection diesel engines, and between 18:1 and 23:1 for indirect injection diesel engines.", "title": "Effect and typical ratios" }, { "paragraph_id": 8, "text": "At the lower end of 14:1, NOx emissions are reduced at a cost of more difficult cold-start. Mazda's Skyactiv-D, the first such commercial engine from 2013, used adaptive fuel injectors among other techniques to ease cold start.", "title": "Effect and typical ratios" }, { "paragraph_id": 9, "text": "The compression ratio may be higher in engines running exclusively on liquefied petroleum gas (LPG or \"propane autogas\") or compressed natural gas, due to the higher octane rating of these fuels.", "title": "Effect and typical ratios" }, { "paragraph_id": 10, "text": "Kerosene engines typically use a compression ratio of 6.5 or lower. The petrol-paraffin engine version of the Ferguson TE20 tractor had a compression ratio of 4.5:1 for operation on tractor vaporising oil with an octane rating between 55 and 70.", "title": "Effect and typical ratios" }, { "paragraph_id": 11, "text": "Motorsport engines often run on high octane petrol and can therefore use higher compression ratios. For example, motorcycle racing engines can use compression ratios as high as 14.7:1, and it is common to find motorcycles with compression ratios above 12.0:1 designed for 95 or higher octane fuel.", "title": "Effect and typical ratios" }, { "paragraph_id": 12, "text": "Ethanol and methanol can take significantly higher compression ratios than gasoline. Racing engines burning methanol and ethanol fuel often have a compression ratio of 14:1 to 16:1.", "title": "Effect and typical ratios" }, { "paragraph_id": 13, "text": "In a piston engine, the static compression ratio ( C R {\\displaystyle CR} ) is the ratio between the volume of the cylinder and combustion chamber when the piston is at the bottom of its stroke, and the volume of the combustion chamber when the piston is at the top of its stroke. It is therefore calculated by the formula", "title": "Mathematical formula" }, { "paragraph_id": 14, "text": "Where:", "title": "Mathematical formula" }, { "paragraph_id": 15, "text": "V d {\\displaystyle V_{d}} can be estimated by the cylinder volume formula", "title": "Mathematical formula" }, { "paragraph_id": 16, "text": "Where:", "title": "Mathematical formula" }, { "paragraph_id": 17, "text": "Because of the complex shape of V c {\\displaystyle V_{c}} it is usually measured directly. This is often done by filling the cylinder with liquid and then measuring the volume of the used liquid.", "title": "Mathematical formula" }, { "paragraph_id": 18, "text": "Most engines use a fixed compression ratio, however a variable compression ratio engine is able to adjust the compression ratio while the engine is in operation. The first production engine with a variable compression ratio was introduced in 2019.", "title": "Variable compression ratio engines" }, { "paragraph_id": 19, "text": "Variable compression ratio is a technology to adjust the compression ratio of an internal combustion engine while the engine is in operation. This is done to increase fuel efficiency while under varying loads. Variable compression engines allow the volume above the piston at top dead centre to be changed.", "title": "Variable compression ratio engines" }, { "paragraph_id": 20, "text": "Higher loads require lower ratios to increase power, while lower loads need higher ratios to increase efficiency, i.e. to lower fuel consumption. For automotive use this needs to be done as the engine is running in response to the load and driving demands.", "title": "Variable compression ratio engines" }, { "paragraph_id": 21, "text": "The 2019 Infiniti QX50 is the first commercially available car that uses a variable compression ratio engine.", "title": "Variable compression ratio engines" }, { "paragraph_id": 22, "text": "The static compression ratio discussed above — calculated solely based on the cylinder and combustion chamber volumes — does not take into account any gasses entering or exiting the cylinder during the compression phase. In most automotive engines, the intake valve closure (which seals the cylinder) takes place during the compression phase (i.e. after bottom dead centre, BDC), which can cause some of the gasses to be pushed back out through the intake valve. On the other hand, intake port tuning and scavenging can cause a greater amount of gas to be trapped in the cylinder than the static volume would suggest. The dynamic compression ratio accounts for these factors.", "title": "Dynamic compression ratio" }, { "paragraph_id": 23, "text": "The dynamic compression ratio is higher with more conservative intake camshaft timing (i.e. soon after BDC), and lower with more radical intake camshaft timing (i.e. later after BDC). Regardless, the dynamic compression ratio is always lower than the static compression ratio.", "title": "Dynamic compression ratio" }, { "paragraph_id": 24, "text": "Absolute cylinder pressure is used to calculate the dynamic compression ratio, using the following formula:", "title": "Dynamic compression ratio" }, { "paragraph_id": 25, "text": "Under ideal (adiabatic) conditions, the ratio of specific heats would be 1.4, but a lower value, generally between 1.2 and 1.3 is used, since the amount of heat lost will vary among engines based on design, size and materials used. For example, if the static compression ratio is 10:1, and the dynamic compression ratio is 7.5:1, a useful value for cylinder pressure would be 7.5 × atmospheric pressure, or 13.7 bar (relative to atmospheric pressure).", "title": "Dynamic compression ratio" }, { "paragraph_id": 26, "text": "The two corrections for dynamic compression ratio affect cylinder pressure in opposite directions, but not in equal strength. An engine with high static compression ratio and late intake valve closure will have a dynamic compression ratio similar to an engine with lower compression but earlier intake valve closure.", "title": "Dynamic compression ratio" } ]	The compression ratio is the ratio between the volume of the cylinder and combustion chamber in an internal combustion engine at their maximum and minimum values. A fundamental specification for such engines, it is measured two ways: the static compression ratio, calculated based on the relative volumes of the combustion chamber and the cylinder when the piston is at the bottom of its stroke, and the volume of the combustion chamber when the piston is at the top of its stroke. The dynamic compression ratio is a more advanced calculation which also takes into account gasses entering and exiting the cylinder during the compression phase.	2002-02-25T15:51:15Z	2023-09-26T15:41:01Z	[ "Template:Webarchive", "Template:Automotive engine", "Template:Main article", "Template:Citation", "Template:Cite magazine", "Template:Unsourced section", "Template:Reflist", "Template:Cite web", "Template:Cite journal", "Template:Cite news", "Template:For", "Template:Short description", "Template:Refimprove" ]	https://en.wikipedia.org/wiki/Compression_ratio
6,865	Concordat of Worms	The Concordat of Worms was an agreement between the Catholic Church and the Holy Roman Empire which regulated the procedure for the appointment of bishops and abbots in the Empire. Signed on 23 September 1122 in the German city of Worms by Pope Callixtus II and Emperor Henry V, the agreement set an end to the Investiture Controversy, a conflict between state and church over the right to appoint religious office holders that had begun in the middle of the 11th century. By signing the concordat, Henry renounced his right to invest bishops and abbots with ring and crosier, and opened ecclesiastical appointments in his realm to canonical elections. Callixtus, in turn, agreed to the presence of the emperor or his officials at the elections and granted the emperor the right to intervene in the case of disputed outcomes. The emperor was also allowed to perform a separate ceremony in which he would invest bishops and abbots with a sceptre, representing the imperial lands associated with their episcopal see. During the middle of the 11th century, a reformist movement within the Christian Church sought to reassert the rights of the Holy See at the expense of the European monarchs. Having been elected in 1073, the reformist Pope Gregory VII proclaimed several edicts aimed at strengthening the authority of the papacy, some of which were formulated in the Dictatus papae of 1075. Gregory's edicts postulated that secular rulers were answerable to the pope and forbade them to make appointments to clerical offices (a process known as investiture). The pope's doctrines were vehemently rejected by Henry IV, the Holy Roman Emperor, who habitually invested the bishops and abbots of his realm. The ensuing conflict between the Empire and the papacy is known as the Investiture Controversy. The dispute continued after the death of Gregory VII in 1084 and the abdication of Henry IV in 1105. Even though Henry's son and successor, Henry V, looked towards reconciliation with the reformist movement, no lasting compromise was achieved in the first 16 years of his reign. In 1111, Henry V brokered an agreement with Pope Paschal II at Sutri, whereby he would abstain from investing clergy in his realm in exchange for the restoration of church property that had originally belonged to the Empire. The Sutri agreement, Henry hoped, would convince Paschal to assent to Henry's official coronation as emperor. The agreement failed to be implemented, leading Henry to imprison the pope. After two months of captivity, Paschal vowed to grant the coronation and to accept the emperor's role in investiture ceremonies. He also agreed never to excommunicate Henry. Given that these concessions had been won by force, ecclesiastical opposition to the Empire continued. The following year, Paschal reneged on his promises. In January 1118, Pope Paschal died. He was succeeded by Gelasius II, who died in January 1119. His successor, the Burgundian Callixtus II, resumed negotiations with the Emperor with the aim of settling the dispute between the church and the Empire. In the autumn of 1119, two papal emissaries, William of Champeaux and Pons of Cluny, met Henry at Strasbourg, where the emperor agreed in principle to abandon the secular investiture ceremony that involved giving new bishops and abbots a ring and a crosier. The two parties scheduled a final summit between Henry and Callixtus at Mouzon, but the meeting ended abruptly after the emperor refused to accept a short-notice change in Callixtus's demands. The church leaders, who were deliberating their position at a council in Reims, reacted by excommunicating Henry. However, they did not endorse the pope's insistence upon the complete abandonment of secular investiture. The negotiations ended in failure. Historians disagree as to whether Calixtus actually wanted peace or fundamentally mistrusted Henry. Due to his uncompromising position in 1111, Calixtus has been termed an "ultra", and his election to the papacy may indicate that the College of Cardinals saw no reason to show weakness to the emperor. This optimism about victory was founded on the very visible, and very vocal opposition to Henry from within his own nobility, and the cardinals may have seen the emperor's internal weaknesses as an opportunity for outright victory. After the failure of the Mouzon negotiations, and the disappearance into the horizon of the chances of Henry's unconditional surrender, the majority of the clergy became willing to compromise in order to settle the dispute. The polemic writings and pronouncements that had figured so highly during the Investiture Dispute had died down by this point. Historian Gerd Tellenbach argues that, despite appearances, these years were "no longer marked by an atmosphere of bitter conflict". This was in part the result of the papacy's realization that it could not win two different disputes on two separate fronts, as it had been trying to do. Calixtus had been personally involved in negotiations with the Emperor over the last decade, and his intimate knowledge of the delicate situation made him the perfect candidate for the attempt. The difference between 1119 and 1122, argues Stroll, was not Henry, who had been willing to make concessions in 1119, but Calixtus, who had then been intransigent, but who now was intent upon reaching an agreement". The same sentiment prevailed in much of the German nobility. In 1121, pressured by a faction of nobles from the Lower Rhine and Duchy of Saxony under the leadership of the archbishop Adalbert of Mainz, Henry agreed to submit to make peace with the pope. In response in February 1122, Calixtus wrote to Frederick in a conciliatory tone via the Bishop of Acqui. His letter has been described as "a carefully crafted overture". Calixtus drew attention to their blood relationship, suggesting that while their shared ancestry compelled them to love each other as brothers, it was fundamental that the German kings draw their authority from God, but via his servants, not directly. However, Calixtus also emphasised for the first time that he blamed not Henry personally for the dispute but his bad advisors who had dictated unsound policy to him. In a major shift in policy since the Council of Reims of 1119, the pope stated that the church gifts what it possesses to all its children, without making claims upon them. This was intended to reassure Henry that in the event of peace between them, his position and Empire were secure. Shifting from the practical to the spiritual, Calixtus asked Henry to bear in mind that he was a king, but like all men limited on his earthly capability; he had armies, and kings below him, but the church had Christ and the Apostles. Continuing his theme, he referred, indirectly, to Henry's excommunication by himself (twice), he begged Henry to allow the conditions for peace to be created, as a result of which the church's, and God's glory would be increased, as concomitantly would the Emperor's. Conversely, he made sure to include a threat: if Henry did not change his ways, Calixtus threatened to place "the protection of the church in the hands of wise men". Historian Mary Stroll argues that, in taking this approach, Calixtus was taking advantage of the fact that, while he himself "was hardly in a position to sabre rattle" due to his military defeat in the south and his difficulty with his own Cardinals, Henry was also under pressure in Germany in both the military and spiritual spheres. The Emperor replied through the Bishop of Speyer and the Abbot of Fulda, who travelled to Rome and collected the pope's emissaries under the Cardinal Bishop of Ostia. Speyer was a representative of Henry's political opponents in Germany, whereas Fulda was a negotiator rather than politically partisan. Complicating matters was a disputed election to the bishopric of Wurzburg in February 1122 of the kind that was at the heart of the Investiture Dispute. Although this almost led to an outbreak of civil war, a truce was arranged in August, allowing the parties to return to the papal negotiations. In the summer of 1122, a synod was convened in Mainz, at which imperial emissaries concluded the terms of their agreement with representatives of the church. In a sign that the Pope intended the impending negotiations to be successful, a Lateran council was announced for the following year. The Emperor received the papal legates in Worms with due ceremony, where he awaited the outcome of the negotiations which appear to have actually taken place in nearby Mainz, which was hostile territory to Henry. As such, he had to communicate via messenger to keep up with events. Abbot Ekkehard of Aura chronicles that discussions took over a week to conclude. On 8 September, he met the papal legates and their final agreements were codified for publication. Although a possible compromise solution had already been received from England, this does not seem to have ever been considered in depth, probably on account of it containing an oath of Homage between Emperor and Pope, which been a historical sticking point in earlier negotiations. The papal delegation was led by Cardinal bishop Lamberto Scannabecchi of Ostia, the future Pope Honorius II. Both sides studied previous negotiations between them, including those from 1111, which were considered to have created precedent. On 23 September 1122, papal and imperial delegates signed a series of documents outside the walls of Worms. There was insufficient room in the city for the number of attendees and watchers. Adalbert, Archbishop of Mainz wrote to Calixtus of how complex the negotiations had been, given that, as he said, Henry regarded the powers he was being asked to renounce as being hereditary in the Imperial throne. It is probable that what was eventually promulgated was the result of almost every word being carefully considered. The main difference between what was to be agreed at Worms and previous negotiations were the concessions from the pope. The agreements come to at Worms were in the nature of both concessions and assurances to the other party. Henry, on oath before God, the apostles and the church renounced his right to invest bishops and abbots with ring and crosier, and opened ecclesiastical appointments in his realm to canonical elections, regno vel imperio. He also recognised the traditional extent and boundaries of the papal patrimony as a legal entity rather than one malleable to the emperor. Henry promised to return to the church those lands rightfully belonging to the church seized by himself or his father to the church; furthermore, he would assist the pope in regaining those that were taken by others, and "he will do the same thing for all other churches and princes, both ecclesiastical and lay". If the pope requested Imperial assistance, he would receive it, and if the church came to the empire for justice, it would be treated fairly. He also swore to abstain from "all investiture by ring and staff", marking the end of an ancient imperial tradition. Callixtus made similar reciprocal promises regarding the empire in Italy. He agreed to the presence of the emperor or his officials at the elections and granted the emperor the right to ajudge in the case of disputed outcomes on episcopal advice—as long as they had been held peacefully and without simony—which had officially been the case ever since precedent had been set by the London Accord of 1107. This right to judge was constrained by an assurance that he would support the majority vote among electors, and further that he would take the advice of his other bishops before doing so. The emperor was also allowed to perform a separate ceremony in which he would invest bishops and abbots with their regalia, a sceptre representing the imperial lands associated with their episcopal see. This clause also contained a "cryptic" condition that once the elect had been so endowed, the new bishop "should do what he ought to do according to imperial rights". In the German imperial lands this was to take place prior to the bishop-elect's consecration; elsewhere in the empire—Burgundy and Italy, exempting the Papal States—within six months of the ceremony. The differentiating between the German portion of the Empire and the rest was of particular importance to Calixtus as the papacy had traditionally felt threatened more from it in the peninsular than the broader Empire. Finally, the pope granted "true peace" on the emperor and all those who had supported him. Calixtus had effectively overturned wholesale the strategy he had pursued during the Mouzon negotiation; episcopal investitures in Germany were to take place with very little substantive change in ceremony, while temporal involvement remained, only replacing investiture with homage, although the word itself—hominium—was studiously avoided. Adalbert, from whom Calixtus first received news of the final concordat, emphasized that it still had to be approved in Rome; this suggests, argues Stroll, that the Archbishop—and probably the papal legation as a whole—were against making concessions to the emperor, and probably wanted Calixtus to disown the agreement. Adalbert believed the agreement would make it easier for the Emperor to legalise intimidation of episcopal electors, writing that "through the opportunity of [the emperor's] presence, the Church of God must undergo the same slavery as before, or an even more oppressive one". "Let the church obtain what is of Christ, and let the emperor have what is his own" (Obtineat Aecclesia quod Christ est, habeat imperator quod suum est) Calixtus II to the Emperor Freerick, 19 February 1122: MS 55 Stadtbibliothek Schaffhausen, 12th century, fol. 185v However, argues Stroll, the concessions Calixtus made were an "excellent bargain" in return for eradicating the danger on the papacy's northern border and therefore allowing him to focus, without threat or distraction, on the Normans to the south. It had achieved its peace, argues Norman Cantor, by allowing local national custom and practice to determine future relations between crown and pope; in most cases, he notes, this "favored the continuance of royal control over the church". The concordat was published as two distinct charters, each laying out the concessions the one party was making to the other. They are known respectively as the Papal (or the Calixtinum) and the Imperial (Henricianum) charters. Calixtus's is addressed to the emperor—in quite personal terms—while Henry's is made out to God. The bishop of Ostia gave the emperor the kiss of peace on behalf of the pope and said Mass. By these rites was Henry returned to the church, the negotiators were lauded for succeeding in their delicate mission and the concordat was called "peace at the will of the pope". Neither charter was signed; both contained probably intentional vagaries and unanswered questions—such as the position of the papacy's churches that lay outside both the patrimony and Germany—which were subsequently addressed on a case-by-case basis. Indeed, Robert Benson has suggested that the brevity of the charters was deliberate and that the agreement as a whole is as important for what it omits as for what it includes. The term regalia, for example, was not only undefined but literally meant two different things to each party. In the Henricianum it referred to the feudal duty owed to a monarch; in the Calixtinium, it was the episcopal temporalities. Broader question, such as the nature of the church and Empire relationship, were also not addressed, although some ambiguity was removed by an 1133 Papal privilege. The Concordat was widely, and deliberately, publicised around Europe. Calixtus was not in Rome when the concordat was delivered. He had left the city by late August and was not to return until mid- to late October, making a progress to Anagni, taking the bishopric of Anagni and Casamari Abbey under his protection. The concordat was ratified at the First Council of the Lateran and the original Henricianum charter is preserved at the Vatican Apostolic Archive; the Calixtinum has not survived except in subsequent copies. A copy of the former is also held in the Codex Udalrici, but this is an abridged version for political circulation, as it reduces the number of imperial concessions made. Indicating the extent that he saw the agreement as a papal victory, Calixtus had a copy of the Henricianum painted on a Lateran Palace chamber wall; while nominally portraying the concordat as a victory for the papacy, it also ignored the numerous concessions made to the emperor. This was part of what Hartmut Hoffmann has called "a conspiracy of silence" regarding papal concessions. Indeed, while the Pope is pictured enthroned, and Henry only standing, the suggestion is still that they were jointly wielding their respective authority to come to this agreement. An English copy of the Calixtinum made by William of Malmsbury is reasonably accurate but omits the clause mentioning the use of a sceptre in the granting of the regalia. He then, having condemned Henry's "Teuton fury", proceeds to praise him, comparing him favourably to Charlemagne for his devotion to God and the peace of Christendom. The first invocation of the concordat was not in the empire, as it turned out, but by Henry I of England the following year. Following a long-running dispute between Canterbury–York which ended up in the Papal court, Joseph Huffman argues that it would have been controversial for the Pope "to justify one set of concessions in Germany and another in England". The concordat ended once and for all the "Imperial church system of the Ottonians and Salians". The First Lateran Council was convoked to confirm the Concordat of Worms. The council was most representative with nearly 300 bishops and 600 abbots from every part of Catholic Europe being present. It convened on March 18, 1123. One of its primary concerns was to emphasise the independence of diocesan clergy, and to do so it forbade monks to leave their monasteries to provide pastoral care, which would in future be the sole preserve of the diocese. In ratifying the Concordat, the Council confirmed that in future bishops would be elected by their clergy, although, also per the Concordat, the Emperor could refuse the homage of German bishops. Decrees were passed directed against simony, concubinage among the clergy, church robbers, and forgers of Church documents; the council also reaffirmed indulgences for Crusaders. These, argues C. Colt Anderson "established important precedents in canon law restricting the influence of the laity and the monks". While this led to a busy period of reform, it was important for those advocating reform not to allow themselves to be confused with the myriad heretical sects and schismatics who were making similar criticisms. The Concordat was the last major achievement for Emperor Henry, as he died in 1125; an attempted invasion of France came to nothing in 1124 in the face of "determined opposition". Fuhrmann comments that, as Henry had shown in his life "even less interest in new currents of thought and feeling than his father", he probably did not understand the significance of the events he had lived through. The peace only lasted until his death; when Imperial Electors met to choose his successor, reformists took the opportunity to attack the imperial gains of Worms on the grounds that they had been granted to him personally rather than Emperors generally. However, later emperors, such as Frederick I and Henry VI, continued to wield as much, if intangible, power as their predecessors in episcopal elections, and to a greater degree to that allowed them by Calixtus' charter. Successive emperors found the Concordat sufficiently favourable that it remained, almost unaltered until the empire was dissolved by Francis II in 1806 on account of Napoleon. Popes, likewise, were able to use the powers codified to them in the Concordatto their advantage in future internal disputes with their Cardinals. The most detailed contemporary description of the Concordat comes to historians through a brief chronicle known as the 1125 continuation chronicle. This pro-papal document lays the blame for the schism squarely upon Henry—by his recognition of Gregory VIII—and the praise for ending it on Calixtus, through his making only temporary compromises. I. S. Robinson, writing in The New Cambridge Medieval History, suggests that this was a deliberate ploy to leave further negotiations open with a more politically malleable Emperor in future. To others it was not so clear cut; Honorius of Autun, for example, writing later in the century discussed lay investiture as an aspect of papal-Imperial relations and, even a century later the Sachsenspiegel still stated that Emperors nominated bishops in Germany. Robinson suggests that, by the end of the 12th century, "it was the imperial, rather than the papal version of the Concordat of Worms that was generally accepted by German churchmen". The contemporary English historian William of Malmesbury praised the Concordat for curtailing what he perceived as the emperor's overreach, or as he put it, "severing the sprouting necks of Teuton fury with the axe of Apostolic power". However, he regarded the final settlement not as a defeat of the Empire at the hands of the church, but rather as a reconciliatory effort by the two powers. Although polemicism had died down in the years preceding the Concordat, it did not finish them completely, and factionalism within the church especially continued. Gerhoh of Reichersberg believed that the emperor now had the right to request German bishops pay homage to him, something that would never have been allowed under Paschal, due to the vague clause instructing newly-elects to the things the emperor wished. Gerhoh argued that now imperial intervention in episcopal elections had been curtailed, Henry would use this clause to extend his influence in the church by means of homage. Gerhoh was torn between viewing the concordat as the end of a long struggle between pope and empire, or whether it marked the beginning of a new one within the church itself. Likewise Adelbert of Mainz—who had casually criticised the agreement in his report to Calixtus continued to lobby against it, and continued to bring complaints against Henry, whom, for example, he alleged had illegally removed the Bishop of Strassburg who was suspected of complicity in the death of Duke Berthold of Zaehringen. The reformist party within the church took a similar view, criticising the Concordat for failing to remove all secular influence on the church. For this reason, a group of followers of Paschal II unsuccessfully attempted to prevent the agreement's ratification at the Lateran Council, crying non placet! when asked to do so: "it was only when it was pointed out that much had to be accepted for the sake of peace that the atmosphere quietened". Calixtus told them that they had "not to approve but tolerate" it. At a council in Bamberg in 1122 Henry gathered those nobles who had not attended the Concordat to seek their approval of the agreement, which they did. The following month he sent cordial letters to Calixtus agreeing with the pope's position that as brothers in Christ they were bound by God to work together, etc., and that he would soon visit personally to discuss the repatriation of papal land. These letters were, in turn, responded to positively by Calixtus, who instructed his delegates to make good the promises they had made at Worms. Gottfried Wilhelm Leibniz called the agreements made at Worms "the oldest concordat in German history, an international treaty", while Augustin Fliche argued that the Concordat effectively instituted the statutes of Ivo of Chartres, a prominent reformer in the early years of the Investiture Contest, a view, it has been suggested, that most historians agree with. The historian Uta-Renate Blumenthal writes that, despite its shortcomings, the Concordat freed "[the church and the Empire] from antiquated concepts with their increasingly anachronistic restrictions". According to the historian William Chester Jordan, the Concordat was "of enormous significance" because it demonstrated that the emperor, in spite of his great secular power, did not have any religious authority. On the other hand, argues Karl F. Morrison, any victory the papacy felt it had won was pyrrhic, as "the king was left in possession of the field". The new peace also now allowed the papacy to expand its territories in Italy, such as the Sabina, which were unobtainable while the dispute with Henry was ongoing, while in Germany, a new class of ecclesiastics was created, what Horst Fuhrmann calls the "ecclesiastical princes of the Empire". While most historians agree that the Concordat marks a clear close to the fifty-year-old struggle between church and empire, disagreement continues on just how decisive a termination that was. Historians are also unclear as to the commitment of the pope to the concordat. Stroll, for example, notes that, while Henry's oaths were made to the church corporate, so in perpetuity, while Calixtus's may have been in a personal capacity. This, Stroll argues, would mean that it could be argued that while Henry's commitments to the church applied forever, Calixtus's applied only for the duration of Henry's reign, and at least one contemporary, Otto of Freising, wrote later in the century that he believed this to be the church's position. Stroll considers it "implausible" that Henry and his counsel would ever have entered into such a one-sided agreement. Indeed, John O'Malley has argued that the emperor had effectively been granted a veto from Calixtus; while in the strictest interpretation of the Gregorian reformers the only two important things in the making of a bishop were his election and consecration, Calixtus had effectively codified a role—however small—for the emperor in this process. Conversely, Benson reckons that while Henry's agreement was with the church in perpetuity, Calixtus'—based on the personal mode of address—was with him personally, and as such not binding on his successors. However, this was also an acknowledgement, he suggests, that much of what the pope did not address was already considered customary, and so did not need addressing. There has also been disagreement in why the Investiture contest ended with the Concordat as it did. Benson notes that, as a truce, it was primarily intended to stop the fighting rather than to address its original causes. It was "a straightforward, political engagement... a pragmatic agreement" between two political bodies. Indeed, controversy over investiture continued for at least another decade; in that light, suggests Benson, it could be argued that the Concordat did not end the dispute at all. There were "many problems unsolved, and [it] left much room for the free play of power". Political scientist Bruce Bueno de Mesquita has argued that, in the long term, the Concordat was an essential component to the later—gradual—creation of the European nation state.	[ { "paragraph_id": 0, "text": "The Concordat of Worms was an agreement between the Catholic Church and the Holy Roman Empire which regulated the procedure for the appointment of bishops and abbots in the Empire. Signed on 23 September 1122 in the German city of Worms by Pope Callixtus II and Emperor Henry V, the agreement set an end to the Investiture Controversy, a conflict between state and church over the right to appoint religious office holders that had begun in the middle of the 11th century.", "title": "" }, { "paragraph_id": 1, "text": "By signing the concordat, Henry renounced his right to invest bishops and abbots with ring and crosier, and opened ecclesiastical appointments in his realm to canonical elections. Callixtus, in turn, agreed to the presence of the emperor or his officials at the elections and granted the emperor the right to intervene in the case of disputed outcomes. The emperor was also allowed to perform a separate ceremony in which he would invest bishops and abbots with a sceptre, representing the imperial lands associated with their episcopal see.", "title": "" }, { "paragraph_id": 2, "text": "During the middle of the 11th century, a reformist movement within the Christian Church sought to reassert the rights of the Holy See at the expense of the European monarchs. Having been elected in 1073, the reformist Pope Gregory VII proclaimed several edicts aimed at strengthening the authority of the papacy, some of which were formulated in the Dictatus papae of 1075. Gregory's edicts postulated that secular rulers were answerable to the pope and forbade them to make appointments to clerical offices (a process known as investiture).", "title": "Background" }, { "paragraph_id": 3, "text": "The pope's doctrines were vehemently rejected by Henry IV, the Holy Roman Emperor, who habitually invested the bishops and abbots of his realm. The ensuing conflict between the Empire and the papacy is known as the Investiture Controversy. The dispute continued after the death of Gregory VII in 1084 and the abdication of Henry IV in 1105.", "title": "Background" }, { "paragraph_id": 4, "text": "Even though Henry's son and successor, Henry V, looked towards reconciliation with the reformist movement, no lasting compromise was achieved in the first 16 years of his reign. In 1111, Henry V brokered an agreement with Pope Paschal II at Sutri, whereby he would abstain from investing clergy in his realm in exchange for the restoration of church property that had originally belonged to the Empire. The Sutri agreement, Henry hoped, would convince Paschal to assent to Henry's official coronation as emperor.", "title": "Background" }, { "paragraph_id": 5, "text": "The agreement failed to be implemented, leading Henry to imprison the pope. After two months of captivity, Paschal vowed to grant the coronation and to accept the emperor's role in investiture ceremonies. He also agreed never to excommunicate Henry. Given that these concessions had been won by force, ecclesiastical opposition to the Empire continued. The following year, Paschal reneged on his promises.", "title": "Background" }, { "paragraph_id": 6, "text": "In January 1118, Pope Paschal died. He was succeeded by Gelasius II, who died in January 1119. His successor, the Burgundian Callixtus II, resumed negotiations with the Emperor with the aim of settling the dispute between the church and the Empire. In the autumn of 1119, two papal emissaries, William of Champeaux and Pons of Cluny, met Henry at Strasbourg, where the emperor agreed in principle to abandon the secular investiture ceremony that involved giving new bishops and abbots a ring and a crosier.", "title": "Mouzon summit" }, { "paragraph_id": 7, "text": "The two parties scheduled a final summit between Henry and Callixtus at Mouzon, but the meeting ended abruptly after the emperor refused to accept a short-notice change in Callixtus's demands. The church leaders, who were deliberating their position at a council in Reims, reacted by excommunicating Henry. However, they did not endorse the pope's insistence upon the complete abandonment of secular investiture. The negotiations ended in failure.", "title": "Mouzon summit" }, { "paragraph_id": 8, "text": "Historians disagree as to whether Calixtus actually wanted peace or fundamentally mistrusted Henry. Due to his uncompromising position in 1111, Calixtus has been termed an \"ultra\", and his election to the papacy may indicate that the College of Cardinals saw no reason to show weakness to the emperor. This optimism about victory was founded on the very visible, and very vocal opposition to Henry from within his own nobility, and the cardinals may have seen the emperor's internal weaknesses as an opportunity for outright victory.", "title": "Mouzon summit" }, { "paragraph_id": 9, "text": "After the failure of the Mouzon negotiations, and the disappearance into the horizon of the chances of Henry's unconditional surrender, the majority of the clergy became willing to compromise in order to settle the dispute. The polemic writings and pronouncements that had figured so highly during the Investiture Dispute had died down by this point. Historian Gerd Tellenbach argues that, despite appearances, these years were \"no longer marked by an atmosphere of bitter conflict\".", "title": "Further negotiations" }, { "paragraph_id": 10, "text": "This was in part the result of the papacy's realization that it could not win two different disputes on two separate fronts, as it had been trying to do. Calixtus had been personally involved in negotiations with the Emperor over the last decade, and his intimate knowledge of the delicate situation made him the perfect candidate for the attempt. The difference between 1119 and 1122, argues Stroll, was not Henry, who had been willing to make concessions in 1119, but Calixtus, who had then been intransigent, but who now was intent upon reaching an agreement\".", "title": "Further negotiations" }, { "paragraph_id": 11, "text": "The same sentiment prevailed in much of the German nobility. In 1121, pressured by a faction of nobles from the Lower Rhine and Duchy of Saxony under the leadership of the archbishop Adalbert of Mainz, Henry agreed to submit to make peace with the pope. In response in February 1122, Calixtus wrote to Frederick in a conciliatory tone via the Bishop of Acqui. His letter has been described as \"a carefully crafted overture\".", "title": "Further negotiations" }, { "paragraph_id": 12, "text": "Calixtus drew attention to their blood relationship, suggesting that while their shared ancestry compelled them to love each other as brothers, it was fundamental that the German kings draw their authority from God, but via his servants, not directly. However, Calixtus also emphasised for the first time that he blamed not Henry personally for the dispute but his bad advisors who had dictated unsound policy to him. In a major shift in policy since the Council of Reims of 1119, the pope stated that the church gifts what it possesses to all its children, without making claims upon them. This was intended to reassure Henry that in the event of peace between them, his position and Empire were secure.", "title": "Further negotiations" }, { "paragraph_id": 13, "text": "Shifting from the practical to the spiritual, Calixtus asked Henry to bear in mind that he was a king, but like all men limited on his earthly capability; he had armies, and kings below him, but the church had Christ and the Apostles. Continuing his theme, he referred, indirectly, to Henry's excommunication by himself (twice), he begged Henry to allow the conditions for peace to be created, as a result of which the church's, and God's glory would be increased, as concomitantly would the Emperor's. Conversely, he made sure to include a threat: if Henry did not change his ways, Calixtus threatened to place \"the protection of the church in the hands of wise men\".", "title": "Further negotiations" }, { "paragraph_id": 14, "text": "Historian Mary Stroll argues that, in taking this approach, Calixtus was taking advantage of the fact that, while he himself \"was hardly in a position to sabre rattle\" due to his military defeat in the south and his difficulty with his own Cardinals, Henry was also under pressure in Germany in both the military and spiritual spheres.", "title": "Further negotiations" }, { "paragraph_id": 15, "text": "The Emperor replied through the Bishop of Speyer and the Abbot of Fulda, who travelled to Rome and collected the pope's emissaries under the Cardinal Bishop of Ostia. Speyer was a representative of Henry's political opponents in Germany, whereas Fulda was a negotiator rather than politically partisan. Complicating matters was a disputed election to the bishopric of Wurzburg in February 1122 of the kind that was at the heart of the Investiture Dispute. Although this almost led to an outbreak of civil war, a truce was arranged in August, allowing the parties to return to the papal negotiations.", "title": "Further negotiations" }, { "paragraph_id": 16, "text": "In the summer of 1122, a synod was convened in Mainz, at which imperial emissaries concluded the terms of their agreement with representatives of the church. In a sign that the Pope intended the impending negotiations to be successful, a Lateran council was announced for the following year.", "title": "Further negotiations" }, { "paragraph_id": 17, "text": "The Emperor received the papal legates in Worms with due ceremony, where he awaited the outcome of the negotiations which appear to have actually taken place in nearby Mainz, which was hostile territory to Henry. As such, he had to communicate via messenger to keep up with events. Abbot Ekkehard of Aura chronicles that discussions took over a week to conclude. On 8 September, he met the papal legates and their final agreements were codified for publication.", "title": "Worms" }, { "paragraph_id": 18, "text": "Although a possible compromise solution had already been received from England, this does not seem to have ever been considered in depth, probably on account of it containing an oath of Homage between Emperor and Pope, which been a historical sticking point in earlier negotiations. The papal delegation was led by Cardinal bishop Lamberto Scannabecchi of Ostia, the future Pope Honorius II.", "title": "Worms" }, { "paragraph_id": 19, "text": "Both sides studied previous negotiations between them, including those from 1111, which were considered to have created precedent. On 23 September 1122, papal and imperial delegates signed a series of documents outside the walls of Worms. There was insufficient room in the city for the number of attendees and watchers. Adalbert, Archbishop of Mainz wrote to Calixtus of how complex the negotiations had been, given that, as he said, Henry regarded the powers he was being asked to renounce as being hereditary in the Imperial throne. It is probable that what was eventually promulgated was the result of almost every word being carefully considered. The main difference between what was to be agreed at Worms and previous negotiations were the concessions from the pope.", "title": "Worms" }, { "paragraph_id": 20, "text": "The agreements come to at Worms were in the nature of both concessions and assurances to the other party. Henry, on oath before God, the apostles and the church renounced his right to invest bishops and abbots with ring and crosier, and opened ecclesiastical appointments in his realm to canonical elections, regno vel imperio. He also recognised the traditional extent and boundaries of the papal patrimony as a legal entity rather than one malleable to the emperor. Henry promised to return to the church those lands rightfully belonging to the church seized by himself or his father to the church; furthermore, he would assist the pope in regaining those that were taken by others, and \"he will do the same thing for all other churches and princes, both ecclesiastical and lay\". If the pope requested Imperial assistance, he would receive it, and if the church came to the empire for justice, it would be treated fairly. He also swore to abstain from \"all investiture by ring and staff\", marking the end of an ancient imperial tradition.", "title": "Concordat" }, { "paragraph_id": 21, "text": "Callixtus made similar reciprocal promises regarding the empire in Italy. He agreed to the presence of the emperor or his officials at the elections and granted the emperor the right to ajudge in the case of disputed outcomes on episcopal advice—as long as they had been held peacefully and without simony—which had officially been the case ever since precedent had been set by the London Accord of 1107. This right to judge was constrained by an assurance that he would support the majority vote among electors, and further that he would take the advice of his other bishops before doing so. The emperor was also allowed to perform a separate ceremony in which he would invest bishops and abbots with their regalia, a sceptre representing the imperial lands associated with their episcopal see. This clause also contained a \"cryptic\" condition that once the elect had been so endowed, the new bishop \"should do what he ought to do according to imperial rights\". In the German imperial lands this was to take place prior to the bishop-elect's consecration; elsewhere in the empire—Burgundy and Italy, exempting the Papal States—within six months of the ceremony. The differentiating between the German portion of the Empire and the rest was of particular importance to Calixtus as the papacy had traditionally felt threatened more from it in the peninsular than the broader Empire. Finally, the pope granted \"true peace\" on the emperor and all those who had supported him. Calixtus had effectively overturned wholesale the strategy he had pursued during the Mouzon negotiation; episcopal investitures in Germany were to take place with very little substantive change in ceremony, while temporal involvement remained, only replacing investiture with homage, although the word itself—hominium—was studiously avoided. Adalbert, from whom Calixtus first received news of the final concordat, emphasized that it still had to be approved in Rome; this suggests, argues Stroll, that the Archbishop—and probably the papal legation as a whole—were against making concessions to the emperor, and probably wanted Calixtus to disown the agreement. Adalbert believed the agreement would make it easier for the Emperor to legalise intimidation of episcopal electors, writing that \"through the opportunity of [the emperor's] presence, the Church of God must undergo the same slavery as before, or an even more oppressive one\".", "title": "Concordat" }, { "paragraph_id": 22, "text": "\"Let the church obtain what is of Christ, and let the emperor have what is his own\" (Obtineat Aecclesia quod Christ est, habeat imperator quod suum est)", "title": "Concordat" }, { "paragraph_id": 23, "text": "Calixtus II to the Emperor Freerick, 19 February 1122: MS 55 Stadtbibliothek Schaffhausen, 12th century, fol. 185v", "title": "Concordat" }, { "paragraph_id": 24, "text": "However, argues Stroll, the concessions Calixtus made were an \"excellent bargain\" in return for eradicating the danger on the papacy's northern border and therefore allowing him to focus, without threat or distraction, on the Normans to the south. It had achieved its peace, argues Norman Cantor, by allowing local national custom and practice to determine future relations between crown and pope; in most cases, he notes, this \"favored the continuance of royal control over the church\".", "title": "Concordat" }, { "paragraph_id": 25, "text": "The concordat was published as two distinct charters, each laying out the concessions the one party was making to the other. They are known respectively as the Papal (or the Calixtinum) and the Imperial (Henricianum) charters. Calixtus's is addressed to the emperor—in quite personal terms—while Henry's is made out to God. The bishop of Ostia gave the emperor the kiss of peace on behalf of the pope and said Mass. By these rites was Henry returned to the church, the negotiators were lauded for succeeding in their delicate mission and the concordat was called \"peace at the will of the pope\". Neither charter was signed; both contained probably intentional vagaries and unanswered questions—such as the position of the papacy's churches that lay outside both the patrimony and Germany—which were subsequently addressed on a case-by-case basis. Indeed, Robert Benson has suggested that the brevity of the charters was deliberate and that the agreement as a whole is as important for what it omits as for what it includes. The term regalia, for example, was not only undefined but literally meant two different things to each party. In the Henricianum it referred to the feudal duty owed to a monarch; in the Calixtinium, it was the episcopal temporalities. Broader question, such as the nature of the church and Empire relationship, were also not addressed, although some ambiguity was removed by an 1133 Papal privilege.", "title": "Concordat" }, { "paragraph_id": 26, "text": "The Concordat was widely, and deliberately, publicised around Europe. Calixtus was not in Rome when the concordat was delivered. He had left the city by late August and was not to return until mid- to late October, making a progress to Anagni, taking the bishopric of Anagni and Casamari Abbey under his protection.", "title": "Concordat" }, { "paragraph_id": 27, "text": "The concordat was ratified at the First Council of the Lateran and the original Henricianum charter is preserved at the Vatican Apostolic Archive; the Calixtinum has not survived except in subsequent copies. A copy of the former is also held in the Codex Udalrici, but this is an abridged version for political circulation, as it reduces the number of imperial concessions made. Indicating the extent that he saw the agreement as a papal victory, Calixtus had a copy of the Henricianum painted on a Lateran Palace chamber wall; while nominally portraying the concordat as a victory for the papacy, it also ignored the numerous concessions made to the emperor. This was part of what Hartmut Hoffmann has called \"a conspiracy of silence\" regarding papal concessions. Indeed, while the Pope is pictured enthroned, and Henry only standing, the suggestion is still that they were jointly wielding their respective authority to come to this agreement. An English copy of the Calixtinum made by William of Malmsbury is reasonably accurate but omits the clause mentioning the use of a sceptre in the granting of the regalia. He then, having condemned Henry's \"Teuton fury\", proceeds to praise him, comparing him favourably to Charlemagne for his devotion to God and the peace of Christendom.", "title": "Concordat" }, { "paragraph_id": 28, "text": "The first invocation of the concordat was not in the empire, as it turned out, but by Henry I of England the following year. Following a long-running dispute between Canterbury–York which ended up in the Papal court, Joseph Huffman argues that it would have been controversial for the Pope \"to justify one set of concessions in Germany and another in England\". The concordat ended once and for all the \"Imperial church system of the Ottonians and Salians\". The First Lateran Council was convoked to confirm the Concordat of Worms. The council was most representative with nearly 300 bishops and 600 abbots from every part of Catholic Europe being present. It convened on March 18, 1123. One of its primary concerns was to emphasise the independence of diocesan clergy, and to do so it forbade monks to leave their monasteries to provide pastoral care, which would in future be the sole preserve of the diocese. In ratifying the Concordat, the Council confirmed that in future bishops would be elected by their clergy, although, also per the Concordat, the Emperor could refuse the homage of German bishops.", "title": "Aftermath" }, { "paragraph_id": 29, "text": "Decrees were passed directed against simony, concubinage among the clergy, church robbers, and forgers of Church documents; the council also reaffirmed indulgences for Crusaders. These, argues C. Colt Anderson \"established important precedents in canon law restricting the influence of the laity and the monks\". While this led to a busy period of reform, it was important for those advocating reform not to allow themselves to be confused with the myriad heretical sects and schismatics who were making similar criticisms.", "title": "Aftermath" }, { "paragraph_id": 30, "text": "The Concordat was the last major achievement for Emperor Henry, as he died in 1125; an attempted invasion of France came to nothing in 1124 in the face of \"determined opposition\". Fuhrmann comments that, as Henry had shown in his life \"even less interest in new currents of thought and feeling than his father\", he probably did not understand the significance of the events he had lived through. The peace only lasted until his death; when Imperial Electors met to choose his successor, reformists took the opportunity to attack the imperial gains of Worms on the grounds that they had been granted to him personally rather than Emperors generally. However, later emperors, such as Frederick I and Henry VI, continued to wield as much, if intangible, power as their predecessors in episcopal elections, and to a greater degree to that allowed them by Calixtus' charter. Successive emperors found the Concordat sufficiently favourable that it remained, almost unaltered until the empire was dissolved by Francis II in 1806 on account of Napoleon. Popes, likewise, were able to use the powers codified to them in the Concordatto their advantage in future internal disputes with their Cardinals.", "title": "Aftermath" }, { "paragraph_id": 31, "text": "The most detailed contemporary description of the Concordat comes to historians through a brief chronicle known as the 1125 continuation chronicle. This pro-papal document lays the blame for the schism squarely upon Henry—by his recognition of Gregory VIII—and the praise for ending it on Calixtus, through his making only temporary compromises. I. S. Robinson, writing in The New Cambridge Medieval History, suggests that this was a deliberate ploy to leave further negotiations open with a more politically malleable Emperor in future. To others it was not so clear cut; Honorius of Autun, for example, writing later in the century discussed lay investiture as an aspect of papal-Imperial relations and, even a century later the Sachsenspiegel still stated that Emperors nominated bishops in Germany. Robinson suggests that, by the end of the 12th century, \"it was the imperial, rather than the papal version of the Concordat of Worms that was generally accepted by German churchmen\".", "title": "Reception" }, { "paragraph_id": 32, "text": "The contemporary English historian William of Malmesbury praised the Concordat for curtailing what he perceived as the emperor's overreach, or as he put it, \"severing the sprouting necks of Teuton fury with the axe of Apostolic power\". However, he regarded the final settlement not as a defeat of the Empire at the hands of the church, but rather as a reconciliatory effort by the two powers. Although polemicism had died down in the years preceding the Concordat, it did not finish them completely, and factionalism within the church especially continued. Gerhoh of Reichersberg believed that the emperor now had the right to request German bishops pay homage to him, something that would never have been allowed under Paschal, due to the vague clause instructing newly-elects to the things the emperor wished. Gerhoh argued that now imperial intervention in episcopal elections had been curtailed, Henry would use this clause to extend his influence in the church by means of homage. Gerhoh was torn between viewing the concordat as the end of a long struggle between pope and empire, or whether it marked the beginning of a new one within the church itself. Likewise Adelbert of Mainz—who had casually criticised the agreement in his report to Calixtus continued to lobby against it, and continued to bring complaints against Henry, whom, for example, he alleged had illegally removed the Bishop of Strassburg who was suspected of complicity in the death of Duke Berthold of Zaehringen.", "title": "Reception" }, { "paragraph_id": 33, "text": "The reformist party within the church took a similar view, criticising the Concordat for failing to remove all secular influence on the church. For this reason, a group of followers of Paschal II unsuccessfully attempted to prevent the agreement's ratification at the Lateran Council, crying non placet! when asked to do so: \"it was only when it was pointed out that much had to be accepted for the sake of peace that the atmosphere quietened\". Calixtus told them that they had \"not to approve but tolerate\" it. At a council in Bamberg in 1122 Henry gathered those nobles who had not attended the Concordat to seek their approval of the agreement, which they did. The following month he sent cordial letters to Calixtus agreeing with the pope's position that as brothers in Christ they were bound by God to work together, etc., and that he would soon visit personally to discuss the repatriation of papal land. These letters were, in turn, responded to positively by Calixtus, who instructed his delegates to make good the promises they had made at Worms.", "title": "Reception" }, { "paragraph_id": 34, "text": "", "title": "Reception" }, { "paragraph_id": 35, "text": "Gottfried Wilhelm Leibniz called the agreements made at Worms \"the oldest concordat in German history, an international treaty\", while Augustin Fliche argued that the Concordat effectively instituted the statutes of Ivo of Chartres, a prominent reformer in the early years of the Investiture Contest, a view, it has been suggested, that most historians agree with. The historian Uta-Renate Blumenthal writes that, despite its shortcomings, the Concordat freed \"[the church and the Empire] from antiquated concepts with their increasingly anachronistic restrictions\". According to the historian William Chester Jordan, the Concordat was \"of enormous significance\" because it demonstrated that the emperor, in spite of his great secular power, did not have any religious authority. On the other hand, argues Karl F. Morrison, any victory the papacy felt it had won was pyrrhic, as \"the king was left in possession of the field\". The new peace also now allowed the papacy to expand its territories in Italy, such as the Sabina, which were unobtainable while the dispute with Henry was ongoing, while in Germany, a new class of ecclesiastics was created, what Horst Fuhrmann calls the \"ecclesiastical princes of the Empire\".", "title": "Reception" }, { "paragraph_id": 36, "text": "While most historians agree that the Concordat marks a clear close to the fifty-year-old struggle between church and empire, disagreement continues on just how decisive a termination that was. Historians are also unclear as to the commitment of the pope to the concordat. Stroll, for example, notes that, while Henry's oaths were made to the church corporate, so in perpetuity, while Calixtus's may have been in a personal capacity. This, Stroll argues, would mean that it could be argued that while Henry's commitments to the church applied forever, Calixtus's applied only for the duration of Henry's reign, and at least one contemporary, Otto of Freising, wrote later in the century that he believed this to be the church's position. Stroll considers it \"implausible\" that Henry and his counsel would ever have entered into such a one-sided agreement. Indeed, John O'Malley has argued that the emperor had effectively been granted a veto from Calixtus; while in the strictest interpretation of the Gregorian reformers the only two important things in the making of a bishop were his election and consecration, Calixtus had effectively codified a role—however small—for the emperor in this process. Conversely, Benson reckons that while Henry's agreement was with the church in perpetuity, Calixtus'—based on the personal mode of address—was with him personally, and as such not binding on his successors. However, this was also an acknowledgement, he suggests, that much of what the pope did not address was already considered customary, and so did not need addressing.", "title": "Reception" }, { "paragraph_id": 37, "text": "There has also been disagreement in why the Investiture contest ended with the Concordat as it did. Benson notes that, as a truce, it was primarily intended to stop the fighting rather than to address its original causes. It was \"a straightforward, political engagement... a pragmatic agreement\" between two political bodies. Indeed, controversy over investiture continued for at least another decade; in that light, suggests Benson, it could be argued that the Concordat did not end the dispute at all. There were \"many problems unsolved, and [it] left much room for the free play of power\". Political scientist Bruce Bueno de Mesquita has argued that, in the long term, the Concordat was an essential component to the later—gradual—creation of the European nation state.", "title": "Reception" } ]	The Concordat of Worms was an agreement between the Catholic Church and the Holy Roman Empire which regulated the procedure for the appointment of bishops and abbots in the Empire. Signed on 23 September 1122 in the German city of Worms by Pope Callixtus II and Emperor Henry V, the agreement set an end to the Investiture Controversy, a conflict between state and church over the right to appoint religious office holders that had begun in the middle of the 11th century. By signing the concordat, Henry renounced his right to invest bishops and abbots with ring and crosier, and opened ecclesiastical appointments in his realm to canonical elections. Callixtus, in turn, agreed to the presence of the emperor or his officials at the elections and granted the emperor the right to intervene in the case of disputed outcomes. The emperor was also allowed to perform a separate ceremony in which he would invest bishops and abbots with a sceptre, representing the imperial lands associated with their episcopal see.	2001-10-22T14:41:00Z	2023-09-25T08:43:40Z	[ "Template:Main", "Template:Refn", "Template:Quote box", "Template:Reflist", "Template:Refend", "Template:Sfn", "Template:Clarify", "Template:Lang-de", "Template:Refbegin", "Template:Cite book", "Template:Investiture controversy", "Template:Catholic Church sidebar", "Template:Cite journal", "Template:Authority control", "Template:Short description", "Template:Distinguish", "Template:Multiple image", "Template:Use dmy dates", "Template:Nbsp", "Template:Lang-la" ]	https://en.wikipedia.org/wiki/Concordat_of_Worms
6,867	Context-free language	In formal language theory, a context-free language (CFL) is a language generated by a context-free grammar (CFG). Context-free languages have many applications in programming languages, in particular, most arithmetic expressions are generated by context-free grammars. Different context-free grammars can generate the same context-free language. Intrinsic properties of the language can be distinguished from extrinsic properties of a particular grammar by comparing multiple grammars that describe the language. The set of all context-free languages is identical to the set of languages accepted by pushdown automata, which makes these languages amenable to parsing. Further, for a given CFG, there is a direct way to produce a pushdown automaton for the grammar (and thereby the corresponding language), though going the other way (producing a grammar given an automaton) is not as direct. An example context-free language is L = { a n b n : n ≥ 1 } {\displaystyle L=\{a^{n}b^{n}:n\geq 1\}} , the language of all non-empty even-length strings, the entire first halves of which are a's, and the entire second halves of which are b's. L is generated by the grammar S → a S b \| a b {\displaystyle S\to aSb~\|~ab} . This language is not regular. It is accepted by the pushdown automaton M = ( { q 0 , q 1 , q f } , { a , b } , { a , z } , δ , q 0 , z , { q f } ) {\displaystyle M=(\{q_{0},q_{1},q_{f}\},\{a,b\},\{a,z\},\delta ,q_{0},z,\{q_{f}\})} where δ {\displaystyle \delta } is defined as follows: Unambiguous CFLs are a proper subset of all CFLs: there are inherently ambiguous CFLs. An example of an inherently ambiguous CFL is the union of { a n b m c m d n \| n , m > 0 } {\displaystyle \{a^{n}b^{m}c^{m}d^{n}\|n,m>0\}} with { a n b n c m d m \| n , m > 0 } {\displaystyle \{a^{n}b^{n}c^{m}d^{m}\|n,m>0\}} . This set is context-free, since the union of two context-free languages is always context-free. But there is no way to unambiguously parse strings in the (non-context-free) subset { a n b n c n d n \| n > 0 } {\displaystyle \{a^{n}b^{n}c^{n}d^{n}\|n>0\}} which is the intersection of these two languages. The language of all properly matched parentheses is generated by the grammar S → S S \| ( S ) \| ε {\displaystyle S\to SS~\|~(S)~\|~\varepsilon } . The context-free nature of the language makes it simple to parse with a pushdown automaton. Determining an instance of the membership problem; i.e. given a string w {\displaystyle w} , determine whether w ∈ L ( G ) {\displaystyle w\in L(G)} where L {\displaystyle L} is the language generated by a given grammar G {\displaystyle G} ; is also known as recognition. Context-free recognition for Chomsky normal form grammars was shown by Leslie G. Valiant to be reducible to boolean matrix multiplication, thus inheriting its complexity upper bound of O(n). Conversely, Lillian Lee has shown O(n) boolean matrix multiplication to be reducible to O(n) CFG parsing, thus establishing some kind of lower bound for the latter. Practical uses of context-free languages require also to produce a derivation tree that exhibits the structure that the grammar associates with the given string. The process of producing this tree is called parsing. Known parsers have a time complexity that is cubic in the size of the string that is parsed. Formally, the set of all context-free languages is identical to the set of languages accepted by pushdown automata (PDA). Parser algorithms for context-free languages include the CYK algorithm and Earley's Algorithm. A special subclass of context-free languages are the deterministic context-free languages which are defined as the set of languages accepted by a deterministic pushdown automaton and can be parsed by a LR(k) parser. See also parsing expression grammar as an alternative approach to grammar and parser. The class of context-free languages is closed under the following operations. That is, if L and P are context-free languages, the following languages are context-free as well: The context-free languages are not closed under intersection. This can be seen by taking the languages A = { a n b n c m ∣ m , n ≥ 0 } {\displaystyle A=\{a^{n}b^{n}c^{m}\mid m,n\geq 0\}} and B = { a m b n c n ∣ m , n ≥ 0 } {\displaystyle B=\{a^{m}b^{n}c^{n}\mid m,n\geq 0\}} , which are both context-free. Their intersection is A ∩ B = { a n b n c n ∣ n ≥ 0 } {\displaystyle A\cap B=\{a^{n}b^{n}c^{n}\mid n\geq 0\}} , which can be shown to be non-context-free by the pumping lemma for context-free languages. As a consequence, context-free languages cannot be closed under complementation, as for any languages A and B, their intersection can be expressed by union and complement: A ∩ B = A ¯ ∪ B ¯ ¯ {\displaystyle A\cap B={\overline {{\overline {A}}\cup {\overline {B}}}}} . In particular, context-free language cannot be closed under difference, since complement can be expressed by difference: L ¯ = Σ ∗ ∖ L {\displaystyle {\overline {L}}=\Sigma ^{*}\setminus L} . However, if L is a context-free language and D is a regular language then both their intersection L ∩ D {\displaystyle L\cap D} and their difference L ∖ D {\displaystyle L\setminus D} are context-free languages. In formal language theory, questions about regular languages are usually decidable, but ones about context-free languages are often not. It is decidable whether such a language is finite, but not whether it contains every possible string, is regular, is unambiguous, or is equivalent to a language with a different grammar. The following problems are undecidable for arbitrarily given context-free grammars A and B: The following problems are decidable for arbitrary context-free languages: According to Hopcroft, Motwani, Ullman (2003), many of the fundamental closure and (un)decidability properties of context-free languages were shown in the 1961 paper of Bar-Hillel, Perles, and Shamir The set { a n b n c n d n \| n > 0 } {\displaystyle \{a^{n}b^{n}c^{n}d^{n}\|n>0\}} is a context-sensitive language, but there does not exist a context-free grammar generating this language. So there exist context-sensitive languages which are not context-free. To prove that a given language is not context-free, one may employ the pumping lemma for context-free languages or a number of other methods, such as Ogden's lemma or Parikh's theorem.	[ { "paragraph_id": 0, "text": "In formal language theory, a context-free language (CFL) is a language generated by a context-free grammar (CFG).", "title": "" }, { "paragraph_id": 1, "text": "Context-free languages have many applications in programming languages, in particular, most arithmetic expressions are generated by context-free grammars.", "title": "" }, { "paragraph_id": 2, "text": "Different context-free grammars can generate the same context-free language. Intrinsic properties of the language can be distinguished from extrinsic properties of a particular grammar by comparing multiple grammars that describe the language.", "title": "Background" }, { "paragraph_id": 3, "text": "The set of all context-free languages is identical to the set of languages accepted by pushdown automata, which makes these languages amenable to parsing. Further, for a given CFG, there is a direct way to produce a pushdown automaton for the grammar (and thereby the corresponding language), though going the other way (producing a grammar given an automaton) is not as direct.", "title": "Background" }, { "paragraph_id": 4, "text": "An example context-free language is L = { a n b n : n ≥ 1 } {\\displaystyle L=\\{a^{n}b^{n}:n\\geq 1\\}} , the language of all non-empty even-length strings, the entire first halves of which are a's, and the entire second halves of which are b's. L is generated by the grammar S → a S b \| a b {\\displaystyle S\\to aSb~\|~ab} . This language is not regular. It is accepted by the pushdown automaton M = ( { q 0 , q 1 , q f } , { a , b } , { a , z } , δ , q 0 , z , { q f } ) {\\displaystyle M=(\\{q_{0},q_{1},q_{f}\\},\\{a,b\\},\\{a,z\\},\\delta ,q_{0},z,\\{q_{f}\\})} where δ {\\displaystyle \\delta } is defined as follows:", "title": "Examples" }, { "paragraph_id": 5, "text": "Unambiguous CFLs are a proper subset of all CFLs: there are inherently ambiguous CFLs. An example of an inherently ambiguous CFL is the union of { a n b m c m d n \| n , m > 0 } {\\displaystyle \\{a^{n}b^{m}c^{m}d^{n}\|n,m>0\\}} with { a n b n c m d m \| n , m > 0 } {\\displaystyle \\{a^{n}b^{n}c^{m}d^{m}\|n,m>0\\}} . This set is context-free, since the union of two context-free languages is always context-free. But there is no way to unambiguously parse strings in the (non-context-free) subset { a n b n c n d n \| n > 0 } {\\displaystyle \\{a^{n}b^{n}c^{n}d^{n}\|n>0\\}} which is the intersection of these two languages.", "title": "Examples" }, { "paragraph_id": 6, "text": "The language of all properly matched parentheses is generated by the grammar S → S S \| ( S ) \| ε {\\displaystyle S\\to SS~\|~(S)~\|~\\varepsilon } .", "title": "Examples" }, { "paragraph_id": 7, "text": "The context-free nature of the language makes it simple to parse with a pushdown automaton.", "title": "Properties" }, { "paragraph_id": 8, "text": "Determining an instance of the membership problem; i.e. given a string w {\\displaystyle w} , determine whether w ∈ L ( G ) {\\displaystyle w\\in L(G)} where L {\\displaystyle L} is the language generated by a given grammar G {\\displaystyle G} ; is also known as recognition. Context-free recognition for Chomsky normal form grammars was shown by Leslie G. Valiant to be reducible to boolean matrix multiplication, thus inheriting its complexity upper bound of O(n). Conversely, Lillian Lee has shown O(n) boolean matrix multiplication to be reducible to O(n) CFG parsing, thus establishing some kind of lower bound for the latter.", "title": "Properties" }, { "paragraph_id": 9, "text": "Practical uses of context-free languages require also to produce a derivation tree that exhibits the structure that the grammar associates with the given string. The process of producing this tree is called parsing. Known parsers have a time complexity that is cubic in the size of the string that is parsed.", "title": "Properties" }, { "paragraph_id": 10, "text": "Formally, the set of all context-free languages is identical to the set of languages accepted by pushdown automata (PDA). Parser algorithms for context-free languages include the CYK algorithm and Earley's Algorithm.", "title": "Properties" }, { "paragraph_id": 11, "text": "A special subclass of context-free languages are the deterministic context-free languages which are defined as the set of languages accepted by a deterministic pushdown automaton and can be parsed by a LR(k) parser.", "title": "Properties" }, { "paragraph_id": 12, "text": "See also parsing expression grammar as an alternative approach to grammar and parser.", "title": "Properties" }, { "paragraph_id": 13, "text": "The class of context-free languages is closed under the following operations. That is, if L and P are context-free languages, the following languages are context-free as well:", "title": "Properties" }, { "paragraph_id": 14, "text": "The context-free languages are not closed under intersection. This can be seen by taking the languages A = { a n b n c m ∣ m , n ≥ 0 } {\\displaystyle A=\\{a^{n}b^{n}c^{m}\\mid m,n\\geq 0\\}} and B = { a m b n c n ∣ m , n ≥ 0 } {\\displaystyle B=\\{a^{m}b^{n}c^{n}\\mid m,n\\geq 0\\}} , which are both context-free. Their intersection is A ∩ B = { a n b n c n ∣ n ≥ 0 } {\\displaystyle A\\cap B=\\{a^{n}b^{n}c^{n}\\mid n\\geq 0\\}} , which can be shown to be non-context-free by the pumping lemma for context-free languages. As a consequence, context-free languages cannot be closed under complementation, as for any languages A and B, their intersection can be expressed by union and complement: A ∩ B = A ¯ ∪ B ¯ ¯ {\\displaystyle A\\cap B={\\overline {{\\overline {A}}\\cup {\\overline {B}}}}} . In particular, context-free language cannot be closed under difference, since complement can be expressed by difference: L ¯ = Σ ∗ ∖ L {\\displaystyle {\\overline {L}}=\\Sigma ^{*}\\setminus L} .", "title": "Properties" }, { "paragraph_id": 15, "text": "However, if L is a context-free language and D is a regular language then both their intersection L ∩ D {\\displaystyle L\\cap D} and their difference L ∖ D {\\displaystyle L\\setminus D} are context-free languages.", "title": "Properties" }, { "paragraph_id": 16, "text": "In formal language theory, questions about regular languages are usually decidable, but ones about context-free languages are often not. It is decidable whether such a language is finite, but not whether it contains every possible string, is regular, is unambiguous, or is equivalent to a language with a different grammar.", "title": "Properties" }, { "paragraph_id": 17, "text": "The following problems are undecidable for arbitrarily given context-free grammars A and B:", "title": "Properties" }, { "paragraph_id": 18, "text": "The following problems are decidable for arbitrary context-free languages:", "title": "Properties" }, { "paragraph_id": 19, "text": "According to Hopcroft, Motwani, Ullman (2003), many of the fundamental closure and (un)decidability properties of context-free languages were shown in the 1961 paper of Bar-Hillel, Perles, and Shamir", "title": "Properties" }, { "paragraph_id": 20, "text": "The set { a n b n c n d n \| n > 0 } {\\displaystyle \\{a^{n}b^{n}c^{n}d^{n}\|n>0\\}} is a context-sensitive language, but there does not exist a context-free grammar generating this language. So there exist context-sensitive languages which are not context-free. To prove that a given language is not context-free, one may employ the pumping lemma for context-free languages or a number of other methods, such as Ogden's lemma or Parikh's theorem.", "title": "Properties" } ]	In formal language theory, a context-free language (CFL) is a language generated by a context-free grammar (CFG). Context-free languages have many applications in programming languages, in particular, most arithmetic expressions are generated by context-free grammars.	2002-02-25T15:51:15Z	2023-10-30T20:00:09Z	[ "Template:Refbegin", "Template:Refend", "Template:Short description", "Template:Mvar", "Template:Main", "Template:Cite web", "Template:Harvtxt", "Template:Cite book", "Template:Sfn", "Template:Citation needed", "Template:Reflist", "Template:Cite journal", "Template:Formal languages and grammars" ]	https://en.wikipedia.org/wiki/Context-free_language
6,868	Caffeine	Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. It is mainly used as a eugeroic (wakefulness promoter) or as a mild cognitive enhancer to increase alertness and attentional performance. Caffeine acts by blocking binding of adenosine to the adenosine A1 receptor, which enhances release of the neurotransmitter acetylcholine. Caffeine has a three-dimensional structure similar to that of adenosine, which allows it to bind and block its receptors. Caffeine also increases cyclic AMP levels through nonselective inhibition of phosphodiesterase. Caffeine is a bitter, white crystalline purine, a methylxanthine alkaloid, and is chemically related to the adenine and guanine bases of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). It is found in the seeds, fruits, nuts, or leaves of a number of plants native to Africa, East Asia and South America, and helps to protect them against herbivores and from competition by preventing the germination of nearby seeds, as well as encouraging consumption by select animals such as honey bees. The best-known source of caffeine is the coffee bean, the seed of the Coffea plant. People may drink beverages containing caffeine to relieve or prevent drowsiness and to improve cognitive performance. To make these drinks, caffeine is extracted by steeping the plant product in water, a process called infusion. Caffeine-containing drinks, such as coffee, tea, and cola, are consumed globally in high volumes. In 2020, almost 10 million tonnes of coffee beans were consumed globally. Caffeine is the world's most widely consumed psychoactive drug. Unlike most other psychoactive substances, caffeine remains largely unregulated and legal in nearly all parts of the world. Caffeine is also an outlier as its use is seen as socially acceptable in most cultures and even encouraged in others. Caffeine has both positive and negative health effects. It can treat and prevent the premature infant breathing disorders bronchopulmonary dysplasia of prematurity and apnea of prematurity. Caffeine citrate is on the WHO Model List of Essential Medicines. It may confer a modest protective effect against some diseases, including Parkinson's disease. Some people experience sleep disruption or anxiety if they consume caffeine, but others show little disturbance. Evidence of a risk during pregnancy is equivocal; some authorities recommend that pregnant women limit caffeine to the equivalent of two cups of coffee per day or less. Caffeine can produce a mild form of drug dependence – associated with withdrawal symptoms such as sleepiness, headache, and irritability – when an individual stops using caffeine after repeated daily intake. Tolerance to the autonomic effects of increased blood pressure and heart rate, and increased urine output, develops with chronic use (i.e., these symptoms become less pronounced or do not occur following consistent use). Caffeine is classified by the US Food and Drug Administration as generally recognized as safe. Toxic doses, over 10 grams per day for an adult, are much higher than the typical dose of under 500 milligrams per day. The European Food Safety Authority reported that up to 400 mg of caffeine per day (around 5.7 mg/kg of body mass per day) does not raise safety concerns for non-pregnant adults, while intakes up to 200 mg per day for pregnant and lactating women do not raise safety concerns for the fetus or the breast-fed infants. A cup of coffee contains 80–175 mg of caffeine, depending on what "bean" (seed) is used, how it is roasted, and how it is prepared (e.g., drip, percolation, or espresso). Thus it requires roughly 50–100 ordinary cups of coffee to reach the toxic dose. However, pure powdered caffeine, which is available as a dietary supplement, can be lethal in tablespoon-sized amounts. Caffeine is used for both prevention and treatment of bronchopulmonary dysplasia in premature infants. It may improve weight gain during therapy and reduce the incidence of cerebral palsy as well as reduce language and cognitive delay. On the other hand, subtle long-term side effects are possible. Caffeine is used as a primary treatment for apnea of prematurity, but not prevention. It is also used for orthostatic hypotension treatment. Some people use caffeine-containing beverages such as coffee or tea to try to treat their asthma. Evidence to support this practice is poor. It appears that caffeine in low doses improves airway function in people with asthma, increasing forced expiratory volume (FEV1) by 5% to 18% for up to four hours. The addition of caffeine (100–130 mg) to commonly prescribed pain relievers such as paracetamol or ibuprofen modestly improves the proportion of people who achieve pain relief. Consumption of caffeine after abdominal surgery shortens the time to recovery of normal bowel function and shortens length of hospital stay. Caffeine was formerly used as a second-line treatment for ADHD. It is considered less effective than methylphenidate or amphetamine but more so than placebo for children with ADHD. Children, adolescents, and adults with ADHD are more likely to consume caffeine, perhaps as a form of self-medication. Caffeine is a central nervous system stimulant that may reduce fatigue and drowsiness. At normal doses, caffeine has variable effects on learning and memory, but it generally improves reaction time, wakefulness, concentration, and motor coordination. The amount of caffeine needed to produce these effects varies from person to person, depending on body size and degree of tolerance. The desired effects arise approximately one hour after consumption, and the desired effects of a moderate dose usually subside after about three or four hours. Caffeine can delay or prevent sleep and improves task performance during sleep deprivation. Shift workers who use caffeine make fewer mistakes that could result from drowsiness. Caffeine in a dose dependent manner increases alertness in both fatigued and normal individuals. A systematic review and meta-analysis from 2014 found that concurrent caffeine and L-theanine use has synergistic psychoactive effects that promote alertness, attention, and task switching; these effects are most pronounced during the first hour post-dose. Caffeine is a proven ergogenic aid in humans. Caffeine improves athletic performance in aerobic (especially endurance sports) and anaerobic conditions. Moderate doses of caffeine (around 5 mg/kg) can improve sprint performance, cycling and running time trial performance, endurance (i.e., it delays the onset of muscle fatigue and central fatigue), and cycling power output. Caffeine increases basal metabolic rate in adults. Caffeine ingestion prior to aerobic exercise increases fat oxidation, particularly in persons with low physical fitness. Caffeine improves muscular strength and power, and may enhance muscular endurance. Caffeine also enhances performance on anaerobic tests. Caffeine consumption before constant load exercise is associated with reduced perceived exertion. While this effect is not present during exercise-to-exhaustion exercise, performance is significantly enhanced. This is congruent with caffeine reducing perceived exertion, because exercise-to-exhaustion should end at the same point of fatigue. Caffeine also improves power output and reduces time to completion in aerobic time trials, an effect positively (but not exclusively) associated with longer duration exercise. For the general population of healthy adults, Health Canada advises a daily intake of no more than 400 mg. This limit was found to be safe by a 2017 systematic review on caffeine toxicology. In healthy children, moderate caffeine intake under 400 mg produces effects that are "modest and typically innocuous". As early as six months old, infants can metabolize caffeine at the same rate as that of adults. Higher doses of caffeine (>400 mg) can cause physiological, psychological and behavioral harm, particularly for children with psychiatric or cardiac conditions. There is no evidence that coffee stunts a child's growth. The American Academy of Pediatrics recommends that caffeine consumption is not appropriate for children and adolescents and should be avoided. This recommendation is based on a clinical report released by American Academy of Pediatrics in 2011 with a review of 45 publications from 1994 to 2011 and includes inputs from various stakeholders (Pediatricians, Committee on nutrition, Canadian Pediatric Society, Centers for Disease Control & Prevention, Food and Drug Administration, Sports Medicine & Fitness committee, National Federations of High School Associations). For children age 12 and under, Health Canada recommends a maximum daily caffeine intake of no more than 2.5 milligrams per kilogram of body weight. Based on average body weights of children, this translates to the following age-based intake limits: Health Canada has not developed advice for adolescents because of insufficient data. However, they suggest that daily caffeine intake for this age group be no more than 2.5 mg/kg body weight. This is because the maximum adult caffeine dose may not be appropriate for light-weight adolescents or for younger adolescents who are still growing. The daily dose of 2.5 mg/kg body weight would not cause adverse health effects in the majority of adolescent caffeine consumers. This is a conservative suggestion since older and heavier-weight adolescents may be able to consume adult doses of caffeine without experiencing adverse effects. The metabolism of caffeine is reduced in pregnancy, especially in the third trimester, and the half-life of caffeine during pregnancy can be increased up to 15 hours (as compared to 2.5 to 4.5 hours in non-pregnant adults). Current evidence regarding the effects of caffeine on pregnancy and for breastfeeding are inconclusive. There is limited primary and secondary advice for, or against, caffeine use during pregnancy and its effects on the fetus or newborn. The UK Food Standards Agency has recommended that pregnant women should limit their caffeine intake, out of prudence, to less than 200 mg of caffeine a day – the equivalent of two cups of instant coffee, or one and a half to two cups of fresh coffee. The American Congress of Obstetricians and Gynecologists (ACOG) concluded in 2010 that caffeine consumption is safe up to 200 mg per day in pregnant women. For women who breastfeed, are pregnant, or may become pregnant, Health Canada recommends a maximum daily caffeine intake of no more than 300 mg, or a little over two 8 oz (237 mL) cups of coffee. A 2017 systematic review on caffeine toxicology found evidence supporting that caffeine consumption up to 300 mg/day for pregnant women is generally not associated with adverse reproductive or developmental effect. There are conflicting reports in the scientific literature about caffeine use during pregnancy. A 2011 review found that caffeine during pregnancy does not appear to increase the risk of congenital malformations, miscarriage or growth retardation even when consumed in moderate to high amounts. Other reviews, however, concluded that there is some evidence that higher caffeine intake by pregnant women may be associated with a higher risk of giving birth to a low birth weight baby, and may be associated with a higher risk of pregnancy loss. A systematic review, analyzing the results of observational studies, suggests that women who consume large amounts of caffeine (greater than 300 mg/day) prior to becoming pregnant may have a higher risk of experiencing pregnancy loss. Caffeine in coffee and other caffeinated drinks can affect gastrointestinal motility and gastric acid secretion. In postmenopausal women, high caffeine consumption can accelerate bone loss. Acute ingestion of caffeine in large doses (at least 250–300 mg, equivalent to the amount found in 2–3 cups of coffee or 5–8 cups of tea) results in a short-term stimulation of urine output in individuals who have been deprived of caffeine for a period of days or weeks. This increase is due to both a diuresis (increase in water excretion) and a natriuresis (increase in saline excretion); it is mediated via proximal tubular adenosine receptor blockade. The acute increase in urinary output may increase the risk of dehydration. However, chronic users of caffeine develop a tolerance to this effect and experience no increase in urinary output. Minor undesired symptoms from caffeine ingestion not sufficiently severe to warrant a psychiatric diagnosis are common and include mild anxiety, jitteriness, insomnia, increased sleep latency, and reduced coordination. Caffeine can have negative effects on anxiety disorders. According to a 2011 literature review, caffeine use may induce anxiety and panic disorders in people with Parkinson's disease. At high doses, typically greater than 300 mg, caffeine can both cause and worsen anxiety. For some people, discontinuing caffeine use can significantly reduce anxiety. In moderate doses, caffeine has been associated with reduced symptoms of depression and lower suicide risk. Two reviews indicate that increased consumption of coffee and caffeine may reduce the risk of depression. Some textbooks state that caffeine is a mild euphoriant, while others state that it is not a euphoriant. Caffeine-induced anxiety disorder is a subclass of the DSM-5 diagnosis of substance/medication-induced anxiety disorder. Whether caffeine can result in an addictive disorder depends on how addiction is defined. Compulsive caffeine consumption under any circumstances has not been observed, and caffeine is therefore not generally considered addictive. However, some diagnostic models, such as the ICDM-9 and ICD-10, include a classification of caffeine addiction under a broader diagnostic model. Some state that certain users can become addicted and therefore unable to decrease use even though they know there are negative health effects. Caffeine does not appear to be a reinforcing stimulus, and some degree of aversion may actually occur, with people preferring placebo over caffeine in a study on drug abuse liability published in an NIDA research monograph. Some state that research does not provide support for an underlying biochemical mechanism for caffeine addiction. Other research states it can affect the reward system. "Caffeine addiction" was added to the ICDM-9 and ICD-10. However, its addition was contested with claims that this diagnostic model of caffeine addiction is not supported by evidence. The American Psychiatric Association's DSM-5 does not include the diagnosis of a caffeine addiction but proposes criteria for the disorder for more study. Withdrawal can cause mild to clinically significant distress or impairment in daily functioning. The frequency at which this occurs is self-reported at 11%, but in lab tests only half of the people who report withdrawal actually experience it, casting doubt on many claims of dependence. Mild physical dependence and withdrawal symptoms may occur upon abstinence, with greater than 100 mg caffeine per day, although these symptoms last no longer than a day. Some symptoms associated with psychological dependence may also occur during withdrawal. The diagnostic criteria for caffeine withdrawal require a previous prolonged daily use of caffeine. Following 24 hours of a marked reduction in consumption, a minimum of 3 of these signs or symptoms is required to meet withdrawal criteria: difficulty concentrating, depressed mood/irritability, flu-like symptoms, headache, and fatigue. Additionally, the signs and symptoms must disrupt important areas of functioning and are not associated with effects of another condition. The ICD-11 includes caffeine dependence as a distinct diagnostic category, which closely mirrors the DSM-5's proposed set of criteria for "caffeine-use disorder". Caffeine use disorder refers to dependence on caffeine characterized by failure to control caffeine consumption despite negative physiological consequences. The APA, which published the DSM-5, acknowledged that there was sufficient evidence in order to create a diagnostic model of caffeine dependence for the DSM-5, but they noted that the clinical significance of the disorder is unclear. Due to this inconclusive evidence on clinical significance, the DSM-5 classifies caffeine-use disorder as a "condition for further study". Tolerance to the effects of caffeine occurs for caffeine-induced elevations in blood pressure and the subjective feelings of nervousness. Sensitization, the process whereby effects become more prominent with use, occurs for positive effects such as feelings of alertness and wellbeing. Tolerance varies for daily, regular caffeine users and high caffeine users. High doses of caffeine (750 to 1200 mg/day spread throughout the day) have been shown to produce complete tolerance to some, but not all of the effects of caffeine. Doses as low as 100 mg/day, such as a 6 oz (170 g) cup of coffee or two to three 12 oz (340 g) servings of caffeinated soft-drink, may continue to cause sleep disruption, among other intolerances. Non-regular caffeine users have the least caffeine tolerance for sleep disruption. Some coffee drinkers develop tolerance to its undesired sleep-disrupting effects, but others apparently do not. A neuroprotective effect of caffeine against Alzheimer's disease and dementia is possible but the evidence is inconclusive. Regular consumption of caffeine may protect people from liver cirrhosis. It was also found to slow the progression of liver disease in people who already have the condition, reduce the risk of liver fibrosis, and offer a protective effect against liver cancer among moderate coffee drinkers. A study conducted in 2017 found that the effects of caffeine from coffee consumption on the liver were observed regardless of how the drink was prepared. Caffeine may lessen the severity of acute mountain sickness if taken a few hours prior to attaining a high altitude. One meta analysis has found that caffeine consumption is associated with a reduced risk of type 2 diabetes. Regular caffeine consumption may reduce the risk of developing Parkinson's disease and may slow the progression of Parkinson's disease. Caffeine increases intraocular pressure in those with glaucoma but does not appear to affect normal individuals. The DSM-5 also includes other caffeine-induced disorders consisting of caffeine-induced anxiety disorder, caffeine-induced sleep disorder and unspecified caffeine-related disorders. The first two disorders are classified under "Anxiety Disorder" and "Sleep-Wake Disorder" because they share similar characteristics. Other disorders that present with significant distress and impairment of daily functioning that warrant clinical attention but do not meet the criteria to be diagnosed under any specific disorders are listed under "Unspecified Caffeine-Related Disorders". Consumption of 1–1.5 grams (1,000–1,500 mg) per day is associated with a condition known as caffeinism. Caffeinism usually combines caffeine dependency with a wide range of unpleasant symptoms including nervousness, irritability, restlessness, insomnia, headaches, and palpitations after caffeine use. Caffeine overdose can result in a state of central nervous system overstimulation known as caffeine intoxication, a clinically significant temporary condition that develops during, or shortly after, the consumption of caffeine. This syndrome typically occurs only after ingestion of large amounts of caffeine, well over the amounts found in typical caffeinated beverages and caffeine tablets (e.g., more than 400–500 mg at a time). According to the DSM-5, caffeine intoxication may be diagnosed if five (or more) of the following symptoms develop after recent consumption of caffeine: restlessness, nervousness, excitement, insomnia, flushed face, diuresis, gastrointestinal disturbance, muscle twitching, rambling flow of thought and speech, tachycardia or cardiac arrhythmia, periods of inexhaustibility, and psychomotor agitation. According to the International Classification of Diseases (ICD-11), cases of very high caffeine intake (e.g. > 5 g) may result in caffeine intoxication with symptoms including mania, depression, lapses in judgment, disorientation, disinhibition, delusions, hallucinations or psychosis, and rhabdomyolysis. High caffeine consumption in energy drinks (at least 1 liter or 320 mg of caffeine) was associated with short-term cardiovascular side effects including hypertension, prolonged QT interval, and heart palpitations. These cardiovascular side effects were not seen with smaller amounts of caffeine consumption in energy drinks (less than 200 mg). As of 2007 there is no known antidote or reversal agent for caffeine intoxication. Treatment of mild caffeine intoxication is directed toward symptom relief; severe intoxication may require peritoneal dialysis, hemodialysis, or hemofiltration. Intralipid infusion therapy is indicated in cases of imminent risk of cardiac arrest in order to scavenge the free serum caffeine. Death from caffeine ingestion appears to be rare, and most commonly caused by an intentional overdose of medications. In 2016, 3702 caffeine-related exposures were reported to Poison Control Centers in the United States, of which 846 required treatment at a medical facility, and 16 had a major outcome; and several caffeine-related deaths are reported in case studies. The LD50 of caffeine in rats is 192 milligrams per kilogram, the fatal dose in humans is estimated to be 150–200 milligrams per kilogram (2.2 lb) of body mass (75–100 cups of coffee for a 70 kg (150 lb) adult). There are cases where doses as low as 57 milligrams per kilogram have been fatal. A number of fatalities have been caused by overdoses of readily available powdered caffeine supplements, for which the estimated lethal amount is less than a tablespoon. The lethal dose is lower in individuals whose ability to metabolize caffeine is impaired due to genetics or chronic liver disease. A death was reported in 2013 of a man with liver cirrhosis who overdosed on caffeinated mints. Caffeine is a substrate for CYP1A2, and interacts with many substances through this and other mechanisms. According to DSST, alcohol causes a decrease in performance on their standardized tests, and caffeine causes a significant improvement. When alcohol and caffeine are consumed jointly, the effects of the caffeine are changed, but the alcohol effects remain the same. For example, consuming additional caffeine does not reduce the effect of alcohol. However, the jitteriness and alertness given by caffeine is decreased when additional alcohol is consumed. Alcohol consumption alone reduces both inhibitory and activational aspects of behavioral control. Caffeine antagonizes the activational aspect of behavioral control, but has no effect on the inhibitory behavioral control. The Dietary Guidelines for Americans recommend avoidance of concomitant consumption of alcohol and caffeine, as taking them together may lead to increased alcohol consumption, with a higher risk of alcohol-associated injury. Smoking tobacco increases caffeine clearance by 56%. Cigarette smoking induces the cytochrome P450 1A2 enzyme that breaks down caffeine, which may lead to increased caffeine tolerance and coffee consumption for regular smokers. Birth control pills can extend the half-life of caffeine, requiring greater attention to caffeine consumption. Caffeine sometimes increases the effectiveness of some medications, such as those for headaches. Caffeine was determined to increase the potency of some over-the-counter analgesic medications by 40%. The pharmacological effects of adenosine may be blunted in individuals taking large quantities of methylxanthines like caffeine. Some other examples of methylxanthines include the medications theophylline and aminophylline, which are prescribed to relieve symptoms of asthma or COPD. In the absence of caffeine and when a person is awake and alert, little adenosine is present in CNS neurons. With a continued wakeful state, over time adenosine accumulates in the neuronal synapse, in turn binding to and activating adenosine receptors found on certain CNS neurons; when activated, these receptors produce a cellular response that ultimately increases drowsiness. When caffeine is consumed, it antagonizes adenosine receptors; in other words, caffeine prevents adenosine from activating the receptor by blocking the location on the receptor where adenosine binds to it. As a result, caffeine temporarily prevents or relieves drowsiness, and thus maintains or restores alertness. Caffeine is an antagonist of adenosine A2A receptors, and knockout mouse studies have specifically implicated antagonism of the A2A receptor as responsible for the wakefulness-promoting effects of caffeine. Antagonism of A2A receptors in the ventrolateral preoptic area (VLPO) reduces inhibitory GABA neurotransmission to the tuberomammillary nucleus, a histaminergic projection nucleus that activation-dependently promotes arousal. This disinhibition of the tuberomammillary nucleus is the downstream mechanism by which caffeine produces wakefulness-promoting effects. Caffeine is an antagonist of all four adenosine receptor subtypes (A1, A2A, A2B, and A3), although with varying potencies. The affinity (KD) values of caffeine for the human adenosine receptors are 12 μM at A1, 2.4 μM at A2A, 13 μM at A2B, and 80 μM at A3. Antagonism of adenosine receptors by caffeine also stimulates the medullary vagal, vasomotor, and respiratory centers, which increases respiratory rate, reduces heart rate, and constricts blood vessels. Adenosine receptor antagonism also promotes neurotransmitter release (e.g., monoamines and acetylcholine), which endows caffeine with its stimulant effects; adenosine acts as an inhibitory neurotransmitter that suppresses activity in the central nervous system. Heart palpitations are caused by blockade of the A1 receptor. Because caffeine is both water- and lipid-soluble, it readily crosses the blood–brain barrier that separates the bloodstream from the interior of the brain. Once in the brain, the principal mode of action is as a nonselective antagonist of adenosine receptors (in other words, an agent that reduces the effects of adenosine). The caffeine molecule is structurally similar to adenosine, and is capable of binding to adenosine receptors on the surface of cells without activating them, thereby acting as a competitive antagonist. In addition to its activity at adenosine receptors, caffeine is an inositol trisphosphate receptor 1 antagonist and a voltage-independent activator of the ryanodine receptors (RYR1, RYR2, and RYR3). It is also a competitive antagonist of the ionotropic glycine receptor. While caffeine does not directly bind to any dopamine receptors, it influences the binding activity of dopamine at its receptors in the striatum by binding to adenosine receptors that have formed GPCR heteromers with dopamine receptors, specifically the A1–D1 receptor heterodimer (this is a receptor complex with 1 adenosine A1 receptor and 1 dopamine D1 receptor) and the A2A–D2 receptor heterotetramer (this is a receptor complex with 2 adenosine A2A receptors and 2 dopamine D2 receptors). The A2A–D2 receptor heterotetramer has been identified as a primary pharmacological target of caffeine, primarily because it mediates some of its psychostimulant effects and its pharmacodynamic interactions with dopaminergic psychostimulants. Caffeine also causes the release of dopamine in the dorsal striatum and nucleus accumbens core (a substructure within the ventral striatum), but not the nucleus accumbens shell, by antagonizing A1 receptors in the axon terminal of dopamine neurons and A1–A2A heterodimers (a receptor complex composed of 1 adenosine A1 receptor and 1 adenosine A2A receptor) in the axon terminal of glutamate neurons. During chronic caffeine use, caffeine-induced dopamine release within the nucleus accumbens core is markedly reduced due to drug tolerance. Caffeine, like other xanthines, also acts as a phosphodiesterase inhibitor. As a competitive nonselective phosphodiesterase inhibitor, caffeine raises intracellular cyclic AMP, activates protein kinase A, inhibits TNF-alpha and leukotriene synthesis, and reduces inflammation and innate immunity. Caffeine also affects the cholinergic system where it is a moderate inhibitor of the enzyme acetylcholinesterase. Caffeine from coffee or other beverages is absorbed by the small intestine within 45 minutes of ingestion and distributed throughout all bodily tissues. Peak blood concentration is reached within 1–2 hours. It is eliminated by first-order kinetics. Caffeine can also be absorbed rectally, evidenced by suppositories of ergotamine tartrate and caffeine (for the relief of migraine) and of chlorobutanol and caffeine (for the treatment of hyperemesis). However, rectal absorption is less efficient than oral: the maximum concentration (Cmax) and total amount absorbed (AUC) are both about 30% (i.e., 1/3.5) of the oral amounts. Caffeine's biological half-life – the time required for the body to eliminate one-half of a dose – varies widely among individuals according to factors such as pregnancy, other drugs, liver enzyme function level (needed for caffeine metabolism) and age. In healthy adults, caffeine's half-life is between 3 and 7 hours. The half-life is decreased by 30-50% in adult male smokers, approximately doubled in women taking oral contraceptives, and prolonged in the last trimester of pregnancy. In newborns the half-life can be 80 hours or more, dropping very rapidly with age, possibly to less than the adult value by age 6 months. The antidepressant fluvoxamine (Luvox) reduces the clearance of caffeine by more than 90%, and increases its elimination half-life more than tenfold; from 4.9 hours to 56 hours. Caffeine is metabolized in the liver by the cytochrome P450 oxidase enzyme system, in particular, by the CYP1A2 isozyme, into three dimethylxanthines, each of which has its own effects on the body: 1,3,7-Trimethyluric acid is a minor caffeine metabolite. 7-Methylxanthine is also a metabolite of caffeine. Each of the above metabolites is further metabolized and then excreted in the urine. Caffeine can accumulate in individuals with severe liver disease, increasing its half-life. A 2011 review found that increased caffeine intake was associated with a variation in two genes that increase the rate of caffeine catabolism. Subjects who had this mutation on both chromosomes consumed 40 mg more caffeine per day than others. This is presumably due to the need for a higher intake to achieve a comparable desired effect, not that the gene led to a disposition for greater incentive of habituation. Pure anhydrous caffeine is a bitter-tasting, white, odorless powder with a melting point of 235–238 °C. Caffeine is moderately soluble in water at room temperature (2 g/100 mL), but very soluble in boiling water (66 g/100 mL). It is also moderately soluble in ethanol (1.5 g/100 mL). It is weakly basic (pKa of conjugate acid = ~0.6) requiring strong acid to protonate it. Caffeine does not contain any stereogenic centers and hence is classified as an achiral molecule. The xanthine core of caffeine contains two fused rings, a pyrimidinedione and imidazole. The pyrimidinedione in turn contains two amide functional groups that exist predominantly in a zwitterionic resonance the location from which the nitrogen atoms are double bonded to their adjacent amide carbons atoms. Hence all six of the atoms within the pyrimidinedione ring system are sp hybridized and planar. The imidazole ring also has a resonance. Therefore, the fused 5,6 ring core of caffeine contains a total of ten pi electrons and hence according to Hückel's rule is aromatic. The biosynthesis of caffeine is an example of convergent evolution among different species. Caffeine may be synthesized in the lab starting with dimethylurea and malonic acid. Commercial supplies of caffeine are not usually manufactured synthetically because the chemical is readily available as a byproduct of decaffeination. Extraction of caffeine from coffee, to produce caffeine and decaffeinated coffee, can be performed using a number of solvents. Following are main methods: "Decaffeinated" coffees do in fact contain caffeine in many cases – some commercially available decaffeinated coffee products contain considerable levels. One study found that decaffeinated coffee contained 10 mg of caffeine per cup, compared to approximately 85 mg of caffeine per cup for regular coffee. Caffeine can be quantified in blood, plasma, or serum to monitor therapy in neonates, confirm a diagnosis of poisoning, or facilitate a medicolegal death investigation. Plasma caffeine levels are usually in the range of 2–10 mg/L in coffee drinkers, 12–36 mg/L in neonates receiving treatment for apnea, and 40–400 mg/L in victims of acute overdosage. Urinary caffeine concentration is frequently measured in competitive sports programs, for which a level in excess of 15 mg/L is usually considered to represent abuse. Some analog substances have been created which mimic caffeine's properties with either function or structure or both. Of the latter group are the xanthines DMPX and 8-chlorotheophylline, which is an ingredient in dramamine. Members of a class of nitrogen substituted xanthines are often proposed as potential alternatives to caffeine. Many other xanthine analogues constituting the adenosine receptor antagonist class have also been elucidated. Some other caffeine analogs: Caffeine, as do other alkaloids such as cinchonine, quinine or strychnine, precipitates polyphenols and tannins. This property can be used in a quantitation method. Around thirty plant species are known to contain caffeine. Common sources are the "beans" (seeds) of the two cultivated coffee plants, Coffea arabica and Coffea canephora (the quantity varies, but 1.3% is a typical value); and of the cocoa plant, Theobroma cacao; the leaves of the tea plant; and kola nuts. Other sources include the leaves of yaupon holly, South American holly yerba mate, and Amazonian holly guayusa; and seeds from Amazonian maple guarana berries. Temperate climates around the world have produced unrelated caffeine-containing plants. Caffeine in plants acts as a natural pesticide: it can paralyze and kill predator insects feeding on the plant. High caffeine levels are found in coffee seedlings when they are developing foliage and lack mechanical protection. In addition, high caffeine levels are found in the surrounding soil of coffee seedlings, which inhibits seed germination of nearby coffee seedlings, thus giving seedlings with the highest caffeine levels fewer competitors for existing resources for survival. Caffeine is stored in tea leaves in two places. Firstly, in the cell vacuoles where it is complexed with polyphenols. This caffeine probably is released into the mouth parts of insects, to discourage herbivory. Secondly, around the vascular bundles, where it probably inhibits pathogenic fungi from entering and colonizing the vascular bundles. Caffeine in nectar may improve the reproductive success of the pollen producing plants by enhancing the reward memory of pollinators such as honey bees. The differing perceptions in the effects of ingesting beverages made from various plants containing caffeine could be explained by the fact that these beverages also contain varying mixtures of other methylxanthine alkaloids, including the cardiac stimulants theophylline and theobromine, and polyphenols that can form insoluble complexes with caffeine. Products containing caffeine include coffee, tea, soft drinks ("colas"), energy drinks, other beverages, chocolate, caffeine tablets, other oral products, and inhalation products. According to a 2020 study in the United States, coffee is the major source of caffeine intake in middle-aged adults, while soft drinks and tea are the major sources in adolescents. Energy drinks are more commonly consumed as a source of caffeine in adolescents as compared to adults. The world's primary source of caffeine is the coffee "bean" (the seed of the coffee plant), from which coffee is brewed. Caffeine content in coffee varies widely depending on the type of coffee bean and the method of preparation used; even beans within a given bush can show variations in concentration. In general, one serving of coffee ranges from 80 to 100 milligrams, for a single shot (30 milliliters) of arabica-variety espresso, to approximately 100–125 milligrams for a cup (120 milliliters) of drip coffee. Arabica coffee typically contains half the caffeine of the robusta variety. In general, dark-roast coffee has very slightly less caffeine than lighter roasts because the roasting process reduces caffeine content of the bean by a small amount. Tea contains more caffeine than coffee by dry weight. A typical serving, however, contains much less, since less of the product is used as compared to an equivalent serving of coffee. Also contributing to caffeine content are growing conditions, processing techniques, and other variables. Thus, teas contain varying amounts of caffeine. Tea contains small amounts of theobromine and slightly higher levels of theophylline than coffee. Preparation and many other factors have a significant impact on tea, and color is a very poor indicator of caffeine content. Teas like the pale Japanese green tea, gyokuro, for example, contain far more caffeine than much darker teas like lapsang souchong, which has very little. Caffeine is also a common ingredient of soft drinks, such as cola, originally prepared from kola nuts. Soft drinks typically contain 0 to 55 milligrams of caffeine per 12 ounce (350 mL) serving. By contrast, energy drinks, such as Red Bull, can start at 80 milligrams of caffeine per serving. The caffeine in these drinks either originates from the ingredients used or is an additive derived from the product of decaffeination or from chemical synthesis. Guarana, a prime ingredient of energy drinks, contains large amounts of caffeine with small amounts of theobromine and theophylline in a naturally occurring slow-release excipient. Chocolate derived from cocoa beans contains a small amount of caffeine. The weak stimulant effect of chocolate may be due to a combination of theobromine and theophylline, as well as caffeine. A typical 28-gram serving of a milk chocolate bar has about as much caffeine as a cup of decaffeinated coffee. By weight, dark chocolate has one to two times the amount of caffeine as coffee: 80–160 mg per 100 g. Higher percentages of cocoa such as 90% amount to 200 mg per 100 g approximately and thus, a 100-gram 85% cocoa chocolate bar contains about 195 mg caffeine. Tablets offer several advantages over coffee, tea, and other caffeinated beverages, including convenience, known dosage, and avoidance of concomitant intake of sugar, acids, and fluids. A use of caffeine in this form is said to improve mental alertness. These tablets are commonly used by students studying for their exams and by people who work or drive for long hours. One U.S. company is marketing oral dissolvable caffeine strips. Another intake route is SpazzStick, a caffeinated lip balm. Alert Energy Caffeine Gum was introduced in the United States in 2013, but was voluntarily withdrawn after an announcement of an investigation by the FDA of the health effects of added caffeine in foods. Similar to an e-cigarette, a caffeine inhaler may be used to deliver caffeine or a stimulant like guarana by vaping. In 2012, the FDA sent a warning letter to one of the companies marketing an inhaler, expressing concerns for the lack of safety information available about inhaled caffeine. According to Chinese legend, the Chinese emperor Shennong, reputed to have reigned in about 3000 BCE, inadvertently discovered tea when he noted that when certain leaves fell into boiling water, a fragrant and restorative drink resulted. Shennong is also mentioned in Lu Yu's Cha Jing, a famous early work on the subject of tea. The earliest credible evidence of either coffee drinking or knowledge of the coffee plant appears in the middle of the fifteenth century, in the Sufi monasteries of the Yemen in southern Arabia. From Mocha, coffee spread to Egypt and North Africa, and by the 16th century, it had reached the rest of the Middle East, Persia and Turkey. From the Middle East, coffee drinking spread to Italy, then to the rest of Europe, and coffee plants were transported by the Dutch to the East Indies and to the Americas. Kola nut use appears to have ancient origins. It is chewed in many West African cultures, in both private and social settings, to restore vitality and ease hunger pangs. The earliest evidence of cocoa bean use comes from residue found in an ancient Mayan pot dated to 600 BCE. Also, chocolate was consumed in a bitter and spicy drink called xocolatl, often seasoned with vanilla, chile pepper, and achiote. Xocolatl was believed to fight fatigue, a belief probably attributable to the theobromine and caffeine content. Chocolate was an important luxury good throughout pre-Columbian Mesoamerica, and cocoa beans were often used as currency. Xocolatl was introduced to Europe by the Spaniards, and became a popular beverage by 1700. The Spaniards also introduced the cacao tree into the West Indies and the Philippines. The leaves and stems of the yaupon holly (Ilex vomitoria) were used by Native Americans to brew a tea called asi or the "black drink". Archaeologists have found evidence of this use far into antiquity, possibly dating to Late Archaic times. In 1819, the German chemist Friedlieb Ferdinand Runge isolated relatively pure caffeine for the first time; he called it "Kaffebase" (i.e., a base that exists in coffee). According to Runge, he did this at the behest of Johann Wolfgang von Goethe. In 1821, caffeine was isolated both by the French chemist Pierre Jean Robiquet and by another pair of French chemists, Pierre-Joseph Pelletier and Joseph Bienaimé Caventou, according to Swedish chemist Jöns Jacob Berzelius in his yearly journal. Furthermore, Berzelius stated that the French chemists had made their discoveries independently of any knowledge of Runge's or each other's work. However, Berzelius later acknowledged Runge's priority in the extraction of caffeine, stating: "However, at this point, it should not remain unmentioned that Runge (in his Phytochemical Discoveries, 1820, pages 146–147) specified the same method and described caffeine under the name Caffeebase a year earlier than Robiquet, to whom the discovery of this substance is usually attributed, having made the first oral announcement about it at a meeting of the Pharmacy Society in Paris." Pelletier's article on caffeine was the first to use the term in print (in the French form Caféine from the French word for coffee: café). It corroborates Berzelius's account: Caffeine, noun (feminine). Crystallizable substance discovered in coffee in 1821 by Mr. Robiquet. During the same period – while they were searching for quinine in coffee because coffee is considered by several doctors to be a medicine that reduces fevers and because coffee belongs to the same family as the cinchona [quinine] tree – on their part, Messrs. Pelletier and Caventou obtained caffeine; but because their research had a different goal and because their research had not been finished, they left priority on this subject to Mr. Robiquet. We do not know why Mr. Robiquet has not published the analysis of coffee which he read to the Pharmacy Society. Its publication would have allowed us to make caffeine better known and give us accurate ideas of coffee's composition ... Robiquet was one of the first to isolate and describe the properties of pure caffeine, whereas Pelletier was the first to perform an elemental analysis. In 1827, M. Oudry isolated "théine" from tea, but in 1838 it was proved by Mulder and by Carl Jobst that theine was actually the same as caffeine. In 1895, German chemist Hermann Emil Fischer (1852–1919) first synthesized caffeine from its chemical components (i.e. a "total synthesis"), and two years later, he also derived the structural formula of the compound. This was part of the work for which Fischer was awarded the Nobel Prize in 1902. Because it was recognized that coffee contained some compound that acted as a stimulant, first coffee and later also caffeine has sometimes been subject to regulation. For example, in the 16th century Islamists in Mecca and in the Ottoman Empire made coffee illegal for some classes. Charles II of England tried to ban it in 1676, Frederick II of Prussia banned it in 1777, and coffee was banned in Sweden at various times between 1756 and 1823. In 1911, caffeine became the focus of one of the earliest documented health scares, when the US government seized 40 barrels and 20 kegs of Coca-Cola syrup in Chattanooga, Tennessee, alleging the caffeine in its drink was "injurious to health". Although the Supreme Court later ruled in favor of Coca-Cola in United States v. Forty Barrels and Twenty Kegs of Coca-Cola, two bills were introduced to the U.S. House of Representatives in 1912 to amend the Pure Food and Drug Act, adding caffeine to the list of "habit-forming" and "deleterious" substances, which must be listed on a product's label. The Food and Drug Administration (FDA) in the United States currently allows only beverages containing less than 0.02% caffeine; but caffeine powder, which is sold as a dietary supplement, is unregulated. It is a regulatory requirement that the label of most prepackaged foods must declare a list of ingredients, including food additives such as caffeine, in descending order of proportion. However, there is no regulatory provision for mandatory quantitative labeling of caffeine, (e.g., milligrams caffeine per stated serving size). There are a number of food ingredients that naturally contain caffeine. These ingredients must appear in food ingredient lists. However, as is the case for "food additive caffeine", there is no requirement to identify the quantitative amount of caffeine in composite foods containing ingredients that are natural sources of caffeine. While coffee or chocolate are broadly recognized as caffeine sources, some ingredients (e.g., guarana, yerba maté) are likely less recognized as caffeine sources. For these natural sources of caffeine, there is no regulatory provision requiring that a food label identify the presence of caffeine nor state the amount of caffeine present in the food. Global consumption of caffeine has been estimated at 120,000 tonnes per year, making it the world's most popular psychoactive substance. This amounts to an average of one serving of a caffeinated beverage for every person every day. The consumption of caffeine has remained stable between 1997 and 2015. Coffee, tea and soft drinks are the most important caffeine sources, with energy drinks contributing little to the total caffeine intake across all age groups. Until recently, the Seventh-day Adventist Church asked for its members to "abstain from caffeinated drinks", but has removed this from baptismal vows (while still recommending abstention as policy). Some from these religions believe that one is not supposed to consume a non-medical, psychoactive substance, or believe that one is not supposed to consume a substance that is addictive. The Church of Jesus Christ of Latter-day Saints has said the following with regard to caffeinated beverages: "... the Church revelation spelling out health practices (Doctrine and Covenants 89) does not mention the use of caffeine. The Church's health guidelines prohibit alcoholic drinks, smoking or chewing of tobacco, and 'hot drinks' – taught by Church leaders to refer specifically to tea and coffee." Gaudiya Vaishnavas generally also abstain from caffeine, because they believe it clouds the mind and overstimulates the senses. To be initiated under a guru, one must have had no caffeine, alcohol, nicotine or other drugs, for at least a year. Caffeinated beverages are widely consumed by Muslims today. In the 16th century, some Muslim authorities made unsuccessful attempts to ban them as forbidden "intoxicating beverages" under Islamic dietary laws. Recently discovered bacteria Pseudomonas putida CBB5 can live on pure caffeine and can cleave caffeine into carbon dioxide and ammonia. Caffeine is toxic to birds and to dogs and cats, and has a pronounced adverse effect on mollusks, various insects, and spiders. This is at least partly due to a poor ability to metabolize the compound, causing higher levels for a given dose per unit weight. Caffeine has also been found to enhance the reward memory of honey bees. Caffeine has been used to double chromosomes in haploid wheat.	[ { "paragraph_id": 0, "text": "Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. It is mainly used as a eugeroic (wakefulness promoter) or as a mild cognitive enhancer to increase alertness and attentional performance. Caffeine acts by blocking binding of adenosine to the adenosine A1 receptor, which enhances release of the neurotransmitter acetylcholine. Caffeine has a three-dimensional structure similar to that of adenosine, which allows it to bind and block its receptors. Caffeine also increases cyclic AMP levels through nonselective inhibition of phosphodiesterase.", "title": "" }, { "paragraph_id": 1, "text": "Caffeine is a bitter, white crystalline purine, a methylxanthine alkaloid, and is chemically related to the adenine and guanine bases of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). It is found in the seeds, fruits, nuts, or leaves of a number of plants native to Africa, East Asia and South America, and helps to protect them against herbivores and from competition by preventing the germination of nearby seeds, as well as encouraging consumption by select animals such as honey bees. The best-known source of caffeine is the coffee bean, the seed of the Coffea plant. People may drink beverages containing caffeine to relieve or prevent drowsiness and to improve cognitive performance. To make these drinks, caffeine is extracted by steeping the plant product in water, a process called infusion. Caffeine-containing drinks, such as coffee, tea, and cola, are consumed globally in high volumes. In 2020, almost 10 million tonnes of coffee beans were consumed globally. Caffeine is the world's most widely consumed psychoactive drug. Unlike most other psychoactive substances, caffeine remains largely unregulated and legal in nearly all parts of the world. Caffeine is also an outlier as its use is seen as socially acceptable in most cultures and even encouraged in others.", "title": "" }, { "paragraph_id": 2, "text": "Caffeine has both positive and negative health effects. It can treat and prevent the premature infant breathing disorders bronchopulmonary dysplasia of prematurity and apnea of prematurity. Caffeine citrate is on the WHO Model List of Essential Medicines. It may confer a modest protective effect against some diseases, including Parkinson's disease. Some people experience sleep disruption or anxiety if they consume caffeine, but others show little disturbance. Evidence of a risk during pregnancy is equivocal; some authorities recommend that pregnant women limit caffeine to the equivalent of two cups of coffee per day or less. Caffeine can produce a mild form of drug dependence – associated with withdrawal symptoms such as sleepiness, headache, and irritability – when an individual stops using caffeine after repeated daily intake. Tolerance to the autonomic effects of increased blood pressure and heart rate, and increased urine output, develops with chronic use (i.e., these symptoms become less pronounced or do not occur following consistent use).", "title": "" }, { "paragraph_id": 3, "text": "Caffeine is classified by the US Food and Drug Administration as generally recognized as safe. Toxic doses, over 10 grams per day for an adult, are much higher than the typical dose of under 500 milligrams per day. The European Food Safety Authority reported that up to 400 mg of caffeine per day (around 5.7 mg/kg of body mass per day) does not raise safety concerns for non-pregnant adults, while intakes up to 200 mg per day for pregnant and lactating women do not raise safety concerns for the fetus or the breast-fed infants. A cup of coffee contains 80–175 mg of caffeine, depending on what \"bean\" (seed) is used, how it is roasted, and how it is prepared (e.g., drip, percolation, or espresso). Thus it requires roughly 50–100 ordinary cups of coffee to reach the toxic dose. However, pure powdered caffeine, which is available as a dietary supplement, can be lethal in tablespoon-sized amounts.", "title": "" }, { "paragraph_id": 4, "text": "Caffeine is used for both prevention and treatment of bronchopulmonary dysplasia in premature infants. It may improve weight gain during therapy and reduce the incidence of cerebral palsy as well as reduce language and cognitive delay. On the other hand, subtle long-term side effects are possible.", "title": "Use" }, { "paragraph_id": 5, "text": "Caffeine is used as a primary treatment for apnea of prematurity, but not prevention. It is also used for orthostatic hypotension treatment.", "title": "Use" }, { "paragraph_id": 6, "text": "Some people use caffeine-containing beverages such as coffee or tea to try to treat their asthma. Evidence to support this practice is poor. It appears that caffeine in low doses improves airway function in people with asthma, increasing forced expiratory volume (FEV1) by 5% to 18% for up to four hours.", "title": "Use" }, { "paragraph_id": 7, "text": "The addition of caffeine (100–130 mg) to commonly prescribed pain relievers such as paracetamol or ibuprofen modestly improves the proportion of people who achieve pain relief.", "title": "Use" }, { "paragraph_id": 8, "text": "Consumption of caffeine after abdominal surgery shortens the time to recovery of normal bowel function and shortens length of hospital stay.", "title": "Use" }, { "paragraph_id": 9, "text": "Caffeine was formerly used as a second-line treatment for ADHD. It is considered less effective than methylphenidate or amphetamine but more so than placebo for children with ADHD. Children, adolescents, and adults with ADHD are more likely to consume caffeine, perhaps as a form of self-medication.", "title": "Use" }, { "paragraph_id": 10, "text": "Caffeine is a central nervous system stimulant that may reduce fatigue and drowsiness. At normal doses, caffeine has variable effects on learning and memory, but it generally improves reaction time, wakefulness, concentration, and motor coordination. The amount of caffeine needed to produce these effects varies from person to person, depending on body size and degree of tolerance. The desired effects arise approximately one hour after consumption, and the desired effects of a moderate dose usually subside after about three or four hours.", "title": "Use" }, { "paragraph_id": 11, "text": "Caffeine can delay or prevent sleep and improves task performance during sleep deprivation. Shift workers who use caffeine make fewer mistakes that could result from drowsiness.", "title": "Use" }, { "paragraph_id": 12, "text": "Caffeine in a dose dependent manner increases alertness in both fatigued and normal individuals.", "title": "Use" }, { "paragraph_id": 13, "text": "A systematic review and meta-analysis from 2014 found that concurrent caffeine and L-theanine use has synergistic psychoactive effects that promote alertness, attention, and task switching; these effects are most pronounced during the first hour post-dose.", "title": "Use" }, { "paragraph_id": 14, "text": "Caffeine is a proven ergogenic aid in humans. Caffeine improves athletic performance in aerobic (especially endurance sports) and anaerobic conditions. Moderate doses of caffeine (around 5 mg/kg) can improve sprint performance, cycling and running time trial performance, endurance (i.e., it delays the onset of muscle fatigue and central fatigue), and cycling power output. Caffeine increases basal metabolic rate in adults. Caffeine ingestion prior to aerobic exercise increases fat oxidation, particularly in persons with low physical fitness.", "title": "Use" }, { "paragraph_id": 15, "text": "Caffeine improves muscular strength and power, and may enhance muscular endurance. Caffeine also enhances performance on anaerobic tests. Caffeine consumption before constant load exercise is associated with reduced perceived exertion. While this effect is not present during exercise-to-exhaustion exercise, performance is significantly enhanced. This is congruent with caffeine reducing perceived exertion, because exercise-to-exhaustion should end at the same point of fatigue. Caffeine also improves power output and reduces time to completion in aerobic time trials, an effect positively (but not exclusively) associated with longer duration exercise.", "title": "Use" }, { "paragraph_id": 16, "text": "For the general population of healthy adults, Health Canada advises a daily intake of no more than 400 mg. This limit was found to be safe by a 2017 systematic review on caffeine toxicology.", "title": "Use" }, { "paragraph_id": 17, "text": "In healthy children, moderate caffeine intake under 400 mg produces effects that are \"modest and typically innocuous\". As early as six months old, infants can metabolize caffeine at the same rate as that of adults. Higher doses of caffeine (>400 mg) can cause physiological, psychological and behavioral harm, particularly for children with psychiatric or cardiac conditions. There is no evidence that coffee stunts a child's growth. The American Academy of Pediatrics recommends that caffeine consumption is not appropriate for children and adolescents and should be avoided. This recommendation is based on a clinical report released by American Academy of Pediatrics in 2011 with a review of 45 publications from 1994 to 2011 and includes inputs from various stakeholders (Pediatricians, Committee on nutrition, Canadian Pediatric Society, Centers for Disease Control & Prevention, Food and Drug Administration, Sports Medicine & Fitness committee, National Federations of High School Associations). For children age 12 and under, Health Canada recommends a maximum daily caffeine intake of no more than 2.5 milligrams per kilogram of body weight. Based on average body weights of children, this translates to the following age-based intake limits:", "title": "Use" }, { "paragraph_id": 18, "text": "Health Canada has not developed advice for adolescents because of insufficient data. However, they suggest that daily caffeine intake for this age group be no more than 2.5 mg/kg body weight. This is because the maximum adult caffeine dose may not be appropriate for light-weight adolescents or for younger adolescents who are still growing. The daily dose of 2.5 mg/kg body weight would not cause adverse health effects in the majority of adolescent caffeine consumers. This is a conservative suggestion since older and heavier-weight adolescents may be able to consume adult doses of caffeine without experiencing adverse effects.", "title": "Use" }, { "paragraph_id": 19, "text": "The metabolism of caffeine is reduced in pregnancy, especially in the third trimester, and the half-life of caffeine during pregnancy can be increased up to 15 hours (as compared to 2.5 to 4.5 hours in non-pregnant adults). Current evidence regarding the effects of caffeine on pregnancy and for breastfeeding are inconclusive. There is limited primary and secondary advice for, or against, caffeine use during pregnancy and its effects on the fetus or newborn.", "title": "Use" }, { "paragraph_id": 20, "text": "The UK Food Standards Agency has recommended that pregnant women should limit their caffeine intake, out of prudence, to less than 200 mg of caffeine a day – the equivalent of two cups of instant coffee, or one and a half to two cups of fresh coffee. The American Congress of Obstetricians and Gynecologists (ACOG) concluded in 2010 that caffeine consumption is safe up to 200 mg per day in pregnant women. For women who breastfeed, are pregnant, or may become pregnant, Health Canada recommends a maximum daily caffeine intake of no more than 300 mg, or a little over two 8 oz (237 mL) cups of coffee. A 2017 systematic review on caffeine toxicology found evidence supporting that caffeine consumption up to 300 mg/day for pregnant women is generally not associated with adverse reproductive or developmental effect.", "title": "Use" }, { "paragraph_id": 21, "text": "There are conflicting reports in the scientific literature about caffeine use during pregnancy. A 2011 review found that caffeine during pregnancy does not appear to increase the risk of congenital malformations, miscarriage or growth retardation even when consumed in moderate to high amounts. Other reviews, however, concluded that there is some evidence that higher caffeine intake by pregnant women may be associated with a higher risk of giving birth to a low birth weight baby, and may be associated with a higher risk of pregnancy loss. A systematic review, analyzing the results of observational studies, suggests that women who consume large amounts of caffeine (greater than 300 mg/day) prior to becoming pregnant may have a higher risk of experiencing pregnancy loss.", "title": "Use" }, { "paragraph_id": 22, "text": "Caffeine in coffee and other caffeinated drinks can affect gastrointestinal motility and gastric acid secretion. In postmenopausal women, high caffeine consumption can accelerate bone loss.", "title": "Adverse effects" }, { "paragraph_id": 23, "text": "Acute ingestion of caffeine in large doses (at least 250–300 mg, equivalent to the amount found in 2–3 cups of coffee or 5–8 cups of tea) results in a short-term stimulation of urine output in individuals who have been deprived of caffeine for a period of days or weeks. This increase is due to both a diuresis (increase in water excretion) and a natriuresis (increase in saline excretion); it is mediated via proximal tubular adenosine receptor blockade. The acute increase in urinary output may increase the risk of dehydration. However, chronic users of caffeine develop a tolerance to this effect and experience no increase in urinary output.", "title": "Adverse effects" }, { "paragraph_id": 24, "text": "Minor undesired symptoms from caffeine ingestion not sufficiently severe to warrant a psychiatric diagnosis are common and include mild anxiety, jitteriness, insomnia, increased sleep latency, and reduced coordination. Caffeine can have negative effects on anxiety disorders. According to a 2011 literature review, caffeine use may induce anxiety and panic disorders in people with Parkinson's disease. At high doses, typically greater than 300 mg, caffeine can both cause and worsen anxiety. For some people, discontinuing caffeine use can significantly reduce anxiety.", "title": "Adverse effects" }, { "paragraph_id": 25, "text": "In moderate doses, caffeine has been associated with reduced symptoms of depression and lower suicide risk. Two reviews indicate that increased consumption of coffee and caffeine may reduce the risk of depression.", "title": "Adverse effects" }, { "paragraph_id": 26, "text": "Some textbooks state that caffeine is a mild euphoriant, while others state that it is not a euphoriant.", "title": "Adverse effects" }, { "paragraph_id": 27, "text": "Caffeine-induced anxiety disorder is a subclass of the DSM-5 diagnosis of substance/medication-induced anxiety disorder.", "title": "Adverse effects" }, { "paragraph_id": 28, "text": "Whether caffeine can result in an addictive disorder depends on how addiction is defined. Compulsive caffeine consumption under any circumstances has not been observed, and caffeine is therefore not generally considered addictive. However, some diagnostic models, such as the ICDM-9 and ICD-10, include a classification of caffeine addiction under a broader diagnostic model. Some state that certain users can become addicted and therefore unable to decrease use even though they know there are negative health effects.", "title": "Adverse effects" }, { "paragraph_id": 29, "text": "Caffeine does not appear to be a reinforcing stimulus, and some degree of aversion may actually occur, with people preferring placebo over caffeine in a study on drug abuse liability published in an NIDA research monograph. Some state that research does not provide support for an underlying biochemical mechanism for caffeine addiction. Other research states it can affect the reward system.", "title": "Adverse effects" }, { "paragraph_id": 30, "text": "\"Caffeine addiction\" was added to the ICDM-9 and ICD-10. However, its addition was contested with claims that this diagnostic model of caffeine addiction is not supported by evidence. The American Psychiatric Association's DSM-5 does not include the diagnosis of a caffeine addiction but proposes criteria for the disorder for more study.", "title": "Adverse effects" }, { "paragraph_id": 31, "text": "Withdrawal can cause mild to clinically significant distress or impairment in daily functioning. The frequency at which this occurs is self-reported at 11%, but in lab tests only half of the people who report withdrawal actually experience it, casting doubt on many claims of dependence. Mild physical dependence and withdrawal symptoms may occur upon abstinence, with greater than 100 mg caffeine per day, although these symptoms last no longer than a day. Some symptoms associated with psychological dependence may also occur during withdrawal. The diagnostic criteria for caffeine withdrawal require a previous prolonged daily use of caffeine. Following 24 hours of a marked reduction in consumption, a minimum of 3 of these signs or symptoms is required to meet withdrawal criteria: difficulty concentrating, depressed mood/irritability, flu-like symptoms, headache, and fatigue. Additionally, the signs and symptoms must disrupt important areas of functioning and are not associated with effects of another condition.", "title": "Adverse effects" }, { "paragraph_id": 32, "text": "The ICD-11 includes caffeine dependence as a distinct diagnostic category, which closely mirrors the DSM-5's proposed set of criteria for \"caffeine-use disorder\". Caffeine use disorder refers to dependence on caffeine characterized by failure to control caffeine consumption despite negative physiological consequences. The APA, which published the DSM-5, acknowledged that there was sufficient evidence in order to create a diagnostic model of caffeine dependence for the DSM-5, but they noted that the clinical significance of the disorder is unclear. Due to this inconclusive evidence on clinical significance, the DSM-5 classifies caffeine-use disorder as a \"condition for further study\".", "title": "Adverse effects" }, { "paragraph_id": 33, "text": "Tolerance to the effects of caffeine occurs for caffeine-induced elevations in blood pressure and the subjective feelings of nervousness. Sensitization, the process whereby effects become more prominent with use, occurs for positive effects such as feelings of alertness and wellbeing. Tolerance varies for daily, regular caffeine users and high caffeine users. High doses of caffeine (750 to 1200 mg/day spread throughout the day) have been shown to produce complete tolerance to some, but not all of the effects of caffeine. Doses as low as 100 mg/day, such as a 6 oz (170 g) cup of coffee or two to three 12 oz (340 g) servings of caffeinated soft-drink, may continue to cause sleep disruption, among other intolerances. Non-regular caffeine users have the least caffeine tolerance for sleep disruption. Some coffee drinkers develop tolerance to its undesired sleep-disrupting effects, but others apparently do not.", "title": "Adverse effects" }, { "paragraph_id": 34, "text": "A neuroprotective effect of caffeine against Alzheimer's disease and dementia is possible but the evidence is inconclusive.", "title": "Adverse effects" }, { "paragraph_id": 35, "text": "Regular consumption of caffeine may protect people from liver cirrhosis. It was also found to slow the progression of liver disease in people who already have the condition, reduce the risk of liver fibrosis, and offer a protective effect against liver cancer among moderate coffee drinkers. A study conducted in 2017 found that the effects of caffeine from coffee consumption on the liver were observed regardless of how the drink was prepared.", "title": "Adverse effects" }, { "paragraph_id": 36, "text": "Caffeine may lessen the severity of acute mountain sickness if taken a few hours prior to attaining a high altitude. One meta analysis has found that caffeine consumption is associated with a reduced risk of type 2 diabetes. Regular caffeine consumption may reduce the risk of developing Parkinson's disease and may slow the progression of Parkinson's disease.", "title": "Adverse effects" }, { "paragraph_id": 37, "text": "Caffeine increases intraocular pressure in those with glaucoma but does not appear to affect normal individuals.", "title": "Adverse effects" }, { "paragraph_id": 38, "text": "The DSM-5 also includes other caffeine-induced disorders consisting of caffeine-induced anxiety disorder, caffeine-induced sleep disorder and unspecified caffeine-related disorders. The first two disorders are classified under \"Anxiety Disorder\" and \"Sleep-Wake Disorder\" because they share similar characteristics. Other disorders that present with significant distress and impairment of daily functioning that warrant clinical attention but do not meet the criteria to be diagnosed under any specific disorders are listed under \"Unspecified Caffeine-Related Disorders\".", "title": "Adverse effects" }, { "paragraph_id": 39, "text": "Consumption of 1–1.5 grams (1,000–1,500 mg) per day is associated with a condition known as caffeinism. Caffeinism usually combines caffeine dependency with a wide range of unpleasant symptoms including nervousness, irritability, restlessness, insomnia, headaches, and palpitations after caffeine use.", "title": "Overdose" }, { "paragraph_id": 40, "text": "Caffeine overdose can result in a state of central nervous system overstimulation known as caffeine intoxication, a clinically significant temporary condition that develops during, or shortly after, the consumption of caffeine. This syndrome typically occurs only after ingestion of large amounts of caffeine, well over the amounts found in typical caffeinated beverages and caffeine tablets (e.g., more than 400–500 mg at a time). According to the DSM-5, caffeine intoxication may be diagnosed if five (or more) of the following symptoms develop after recent consumption of caffeine: restlessness, nervousness, excitement, insomnia, flushed face, diuresis, gastrointestinal disturbance, muscle twitching, rambling flow of thought and speech, tachycardia or cardiac arrhythmia, periods of inexhaustibility, and psychomotor agitation.", "title": "Overdose" }, { "paragraph_id": 41, "text": "According to the International Classification of Diseases (ICD-11), cases of very high caffeine intake (e.g. > 5 g) may result in caffeine intoxication with symptoms including mania, depression, lapses in judgment, disorientation, disinhibition, delusions, hallucinations or psychosis, and rhabdomyolysis.", "title": "Overdose" }, { "paragraph_id": 42, "text": "High caffeine consumption in energy drinks (at least 1 liter or 320 mg of caffeine) was associated with short-term cardiovascular side effects including hypertension, prolonged QT interval, and heart palpitations. These cardiovascular side effects were not seen with smaller amounts of caffeine consumption in energy drinks (less than 200 mg).", "title": "Overdose" }, { "paragraph_id": 43, "text": "As of 2007 there is no known antidote or reversal agent for caffeine intoxication. Treatment of mild caffeine intoxication is directed toward symptom relief; severe intoxication may require peritoneal dialysis, hemodialysis, or hemofiltration. Intralipid infusion therapy is indicated in cases of imminent risk of cardiac arrest in order to scavenge the free serum caffeine.", "title": "Overdose" }, { "paragraph_id": 44, "text": "Death from caffeine ingestion appears to be rare, and most commonly caused by an intentional overdose of medications. In 2016, 3702 caffeine-related exposures were reported to Poison Control Centers in the United States, of which 846 required treatment at a medical facility, and 16 had a major outcome; and several caffeine-related deaths are reported in case studies. The LD50 of caffeine in rats is 192 milligrams per kilogram, the fatal dose in humans is estimated to be 150–200 milligrams per kilogram (2.2 lb) of body mass (75–100 cups of coffee for a 70 kg (150 lb) adult). There are cases where doses as low as 57 milligrams per kilogram have been fatal. A number of fatalities have been caused by overdoses of readily available powdered caffeine supplements, for which the estimated lethal amount is less than a tablespoon. The lethal dose is lower in individuals whose ability to metabolize caffeine is impaired due to genetics or chronic liver disease. A death was reported in 2013 of a man with liver cirrhosis who overdosed on caffeinated mints.", "title": "Overdose" }, { "paragraph_id": 45, "text": "Caffeine is a substrate for CYP1A2, and interacts with many substances through this and other mechanisms.", "title": "Interactions" }, { "paragraph_id": 46, "text": "According to DSST, alcohol causes a decrease in performance on their standardized tests, and caffeine causes a significant improvement. When alcohol and caffeine are consumed jointly, the effects of the caffeine are changed, but the alcohol effects remain the same. For example, consuming additional caffeine does not reduce the effect of alcohol. However, the jitteriness and alertness given by caffeine is decreased when additional alcohol is consumed. Alcohol consumption alone reduces both inhibitory and activational aspects of behavioral control. Caffeine antagonizes the activational aspect of behavioral control, but has no effect on the inhibitory behavioral control. The Dietary Guidelines for Americans recommend avoidance of concomitant consumption of alcohol and caffeine, as taking them together may lead to increased alcohol consumption, with a higher risk of alcohol-associated injury.", "title": "Interactions" }, { "paragraph_id": 47, "text": "Smoking tobacco increases caffeine clearance by 56%. Cigarette smoking induces the cytochrome P450 1A2 enzyme that breaks down caffeine, which may lead to increased caffeine tolerance and coffee consumption for regular smokers.", "title": "Interactions" }, { "paragraph_id": 48, "text": "Birth control pills can extend the half-life of caffeine, requiring greater attention to caffeine consumption.", "title": "Interactions" }, { "paragraph_id": 49, "text": "Caffeine sometimes increases the effectiveness of some medications, such as those for headaches. Caffeine was determined to increase the potency of some over-the-counter analgesic medications by 40%.", "title": "Interactions" }, { "paragraph_id": 50, "text": "The pharmacological effects of adenosine may be blunted in individuals taking large quantities of methylxanthines like caffeine. Some other examples of methylxanthines include the medications theophylline and aminophylline, which are prescribed to relieve symptoms of asthma or COPD.", "title": "Interactions" }, { "paragraph_id": 51, "text": "In the absence of caffeine and when a person is awake and alert, little adenosine is present in CNS neurons. With a continued wakeful state, over time adenosine accumulates in the neuronal synapse, in turn binding to and activating adenosine receptors found on certain CNS neurons; when activated, these receptors produce a cellular response that ultimately increases drowsiness. When caffeine is consumed, it antagonizes adenosine receptors; in other words, caffeine prevents adenosine from activating the receptor by blocking the location on the receptor where adenosine binds to it. As a result, caffeine temporarily prevents or relieves drowsiness, and thus maintains or restores alertness.", "title": "Pharmacology" }, { "paragraph_id": 52, "text": "Caffeine is an antagonist of adenosine A2A receptors, and knockout mouse studies have specifically implicated antagonism of the A2A receptor as responsible for the wakefulness-promoting effects of caffeine. Antagonism of A2A receptors in the ventrolateral preoptic area (VLPO) reduces inhibitory GABA neurotransmission to the tuberomammillary nucleus, a histaminergic projection nucleus that activation-dependently promotes arousal. This disinhibition of the tuberomammillary nucleus is the downstream mechanism by which caffeine produces wakefulness-promoting effects. Caffeine is an antagonist of all four adenosine receptor subtypes (A1, A2A, A2B, and A3), although with varying potencies. The affinity (KD) values of caffeine for the human adenosine receptors are 12 μM at A1, 2.4 μM at A2A, 13 μM at A2B, and 80 μM at A3.", "title": "Pharmacology" }, { "paragraph_id": 53, "text": "Antagonism of adenosine receptors by caffeine also stimulates the medullary vagal, vasomotor, and respiratory centers, which increases respiratory rate, reduces heart rate, and constricts blood vessels. Adenosine receptor antagonism also promotes neurotransmitter release (e.g., monoamines and acetylcholine), which endows caffeine with its stimulant effects; adenosine acts as an inhibitory neurotransmitter that suppresses activity in the central nervous system. Heart palpitations are caused by blockade of the A1 receptor.", "title": "Pharmacology" }, { "paragraph_id": 54, "text": "Because caffeine is both water- and lipid-soluble, it readily crosses the blood–brain barrier that separates the bloodstream from the interior of the brain. Once in the brain, the principal mode of action is as a nonselective antagonist of adenosine receptors (in other words, an agent that reduces the effects of adenosine). The caffeine molecule is structurally similar to adenosine, and is capable of binding to adenosine receptors on the surface of cells without activating them, thereby acting as a competitive antagonist.", "title": "Pharmacology" }, { "paragraph_id": 55, "text": "In addition to its activity at adenosine receptors, caffeine is an inositol trisphosphate receptor 1 antagonist and a voltage-independent activator of the ryanodine receptors (RYR1, RYR2, and RYR3). It is also a competitive antagonist of the ionotropic glycine receptor.", "title": "Pharmacology" }, { "paragraph_id": 56, "text": "While caffeine does not directly bind to any dopamine receptors, it influences the binding activity of dopamine at its receptors in the striatum by binding to adenosine receptors that have formed GPCR heteromers with dopamine receptors, specifically the A1–D1 receptor heterodimer (this is a receptor complex with 1 adenosine A1 receptor and 1 dopamine D1 receptor) and the A2A–D2 receptor heterotetramer (this is a receptor complex with 2 adenosine A2A receptors and 2 dopamine D2 receptors). The A2A–D2 receptor heterotetramer has been identified as a primary pharmacological target of caffeine, primarily because it mediates some of its psychostimulant effects and its pharmacodynamic interactions with dopaminergic psychostimulants.", "title": "Pharmacology" }, { "paragraph_id": 57, "text": "Caffeine also causes the release of dopamine in the dorsal striatum and nucleus accumbens core (a substructure within the ventral striatum), but not the nucleus accumbens shell, by antagonizing A1 receptors in the axon terminal of dopamine neurons and A1–A2A heterodimers (a receptor complex composed of 1 adenosine A1 receptor and 1 adenosine A2A receptor) in the axon terminal of glutamate neurons. During chronic caffeine use, caffeine-induced dopamine release within the nucleus accumbens core is markedly reduced due to drug tolerance.", "title": "Pharmacology" }, { "paragraph_id": 58, "text": "Caffeine, like other xanthines, also acts as a phosphodiesterase inhibitor. As a competitive nonselective phosphodiesterase inhibitor, caffeine raises intracellular cyclic AMP, activates protein kinase A, inhibits TNF-alpha and leukotriene synthesis, and reduces inflammation and innate immunity. Caffeine also affects the cholinergic system where it is a moderate inhibitor of the enzyme acetylcholinesterase.", "title": "Pharmacology" }, { "paragraph_id": 59, "text": "Caffeine from coffee or other beverages is absorbed by the small intestine within 45 minutes of ingestion and distributed throughout all bodily tissues. Peak blood concentration is reached within 1–2 hours. It is eliminated by first-order kinetics. Caffeine can also be absorbed rectally, evidenced by suppositories of ergotamine tartrate and caffeine (for the relief of migraine) and of chlorobutanol and caffeine (for the treatment of hyperemesis). However, rectal absorption is less efficient than oral: the maximum concentration (Cmax) and total amount absorbed (AUC) are both about 30% (i.e., 1/3.5) of the oral amounts.", "title": "Pharmacology" }, { "paragraph_id": 60, "text": "Caffeine's biological half-life – the time required for the body to eliminate one-half of a dose – varies widely among individuals according to factors such as pregnancy, other drugs, liver enzyme function level (needed for caffeine metabolism) and age. In healthy adults, caffeine's half-life is between 3 and 7 hours. The half-life is decreased by 30-50% in adult male smokers, approximately doubled in women taking oral contraceptives, and prolonged in the last trimester of pregnancy. In newborns the half-life can be 80 hours or more, dropping very rapidly with age, possibly to less than the adult value by age 6 months. The antidepressant fluvoxamine (Luvox) reduces the clearance of caffeine by more than 90%, and increases its elimination half-life more than tenfold; from 4.9 hours to 56 hours.", "title": "Pharmacology" }, { "paragraph_id": 61, "text": "Caffeine is metabolized in the liver by the cytochrome P450 oxidase enzyme system, in particular, by the CYP1A2 isozyme, into three dimethylxanthines, each of which has its own effects on the body:", "title": "Pharmacology" }, { "paragraph_id": 62, "text": "1,3,7-Trimethyluric acid is a minor caffeine metabolite. 7-Methylxanthine is also a metabolite of caffeine. Each of the above metabolites is further metabolized and then excreted in the urine. Caffeine can accumulate in individuals with severe liver disease, increasing its half-life.", "title": "Pharmacology" }, { "paragraph_id": 63, "text": "A 2011 review found that increased caffeine intake was associated with a variation in two genes that increase the rate of caffeine catabolism. Subjects who had this mutation on both chromosomes consumed 40 mg more caffeine per day than others. This is presumably due to the need for a higher intake to achieve a comparable desired effect, not that the gene led to a disposition for greater incentive of habituation.", "title": "Pharmacology" }, { "paragraph_id": 64, "text": "Pure anhydrous caffeine is a bitter-tasting, white, odorless powder with a melting point of 235–238 °C. Caffeine is moderately soluble in water at room temperature (2 g/100 mL), but very soluble in boiling water (66 g/100 mL). It is also moderately soluble in ethanol (1.5 g/100 mL). It is weakly basic (pKa of conjugate acid = ~0.6) requiring strong acid to protonate it. Caffeine does not contain any stereogenic centers and hence is classified as an achiral molecule.", "title": "Chemistry" }, { "paragraph_id": 65, "text": "The xanthine core of caffeine contains two fused rings, a pyrimidinedione and imidazole. The pyrimidinedione in turn contains two amide functional groups that exist predominantly in a zwitterionic resonance the location from which the nitrogen atoms are double bonded to their adjacent amide carbons atoms. Hence all six of the atoms within the pyrimidinedione ring system are sp hybridized and planar. The imidazole ring also has a resonance. Therefore, the fused 5,6 ring core of caffeine contains a total of ten pi electrons and hence according to Hückel's rule is aromatic.", "title": "Chemistry" }, { "paragraph_id": 66, "text": "The biosynthesis of caffeine is an example of convergent evolution among different species.", "title": "Chemistry" }, { "paragraph_id": 67, "text": "Caffeine may be synthesized in the lab starting with dimethylurea and malonic acid.", "title": "Chemistry" }, { "paragraph_id": 68, "text": "Commercial supplies of caffeine are not usually manufactured synthetically because the chemical is readily available as a byproduct of decaffeination.", "title": "Chemistry" }, { "paragraph_id": 69, "text": "Extraction of caffeine from coffee, to produce caffeine and decaffeinated coffee, can be performed using a number of solvents. Following are main methods:", "title": "Chemistry" }, { "paragraph_id": 70, "text": "\"Decaffeinated\" coffees do in fact contain caffeine in many cases – some commercially available decaffeinated coffee products contain considerable levels. One study found that decaffeinated coffee contained 10 mg of caffeine per cup, compared to approximately 85 mg of caffeine per cup for regular coffee.", "title": "Chemistry" }, { "paragraph_id": 71, "text": "Caffeine can be quantified in blood, plasma, or serum to monitor therapy in neonates, confirm a diagnosis of poisoning, or facilitate a medicolegal death investigation. Plasma caffeine levels are usually in the range of 2–10 mg/L in coffee drinkers, 12–36 mg/L in neonates receiving treatment for apnea, and 40–400 mg/L in victims of acute overdosage. Urinary caffeine concentration is frequently measured in competitive sports programs, for which a level in excess of 15 mg/L is usually considered to represent abuse.", "title": "Chemistry" }, { "paragraph_id": 72, "text": "Some analog substances have been created which mimic caffeine's properties with either function or structure or both. Of the latter group are the xanthines DMPX and 8-chlorotheophylline, which is an ingredient in dramamine. Members of a class of nitrogen substituted xanthines are often proposed as potential alternatives to caffeine. Many other xanthine analogues constituting the adenosine receptor antagonist class have also been elucidated.", "title": "Chemistry" }, { "paragraph_id": 73, "text": "Some other caffeine analogs:", "title": "Chemistry" }, { "paragraph_id": 74, "text": "Caffeine, as do other alkaloids such as cinchonine, quinine or strychnine, precipitates polyphenols and tannins. This property can be used in a quantitation method.", "title": "Chemistry" }, { "paragraph_id": 75, "text": "Around thirty plant species are known to contain caffeine. Common sources are the \"beans\" (seeds) of the two cultivated coffee plants, Coffea arabica and Coffea canephora (the quantity varies, but 1.3% is a typical value); and of the cocoa plant, Theobroma cacao; the leaves of the tea plant; and kola nuts. Other sources include the leaves of yaupon holly, South American holly yerba mate, and Amazonian holly guayusa; and seeds from Amazonian maple guarana berries. Temperate climates around the world have produced unrelated caffeine-containing plants.", "title": "Natural occurrence" }, { "paragraph_id": 76, "text": "Caffeine in plants acts as a natural pesticide: it can paralyze and kill predator insects feeding on the plant. High caffeine levels are found in coffee seedlings when they are developing foliage and lack mechanical protection. In addition, high caffeine levels are found in the surrounding soil of coffee seedlings, which inhibits seed germination of nearby coffee seedlings, thus giving seedlings with the highest caffeine levels fewer competitors for existing resources for survival. Caffeine is stored in tea leaves in two places. Firstly, in the cell vacuoles where it is complexed with polyphenols. This caffeine probably is released into the mouth parts of insects, to discourage herbivory. Secondly, around the vascular bundles, where it probably inhibits pathogenic fungi from entering and colonizing the vascular bundles. Caffeine in nectar may improve the reproductive success of the pollen producing plants by enhancing the reward memory of pollinators such as honey bees.", "title": "Natural occurrence" }, { "paragraph_id": 77, "text": "The differing perceptions in the effects of ingesting beverages made from various plants containing caffeine could be explained by the fact that these beverages also contain varying mixtures of other methylxanthine alkaloids, including the cardiac stimulants theophylline and theobromine, and polyphenols that can form insoluble complexes with caffeine.", "title": "Natural occurrence" }, { "paragraph_id": 78, "text": "Products containing caffeine include coffee, tea, soft drinks (\"colas\"), energy drinks, other beverages, chocolate, caffeine tablets, other oral products, and inhalation products. According to a 2020 study in the United States, coffee is the major source of caffeine intake in middle-aged adults, while soft drinks and tea are the major sources in adolescents. Energy drinks are more commonly consumed as a source of caffeine in adolescents as compared to adults.", "title": "Products" }, { "paragraph_id": 79, "text": "The world's primary source of caffeine is the coffee \"bean\" (the seed of the coffee plant), from which coffee is brewed. Caffeine content in coffee varies widely depending on the type of coffee bean and the method of preparation used; even beans within a given bush can show variations in concentration. In general, one serving of coffee ranges from 80 to 100 milligrams, for a single shot (30 milliliters) of arabica-variety espresso, to approximately 100–125 milligrams for a cup (120 milliliters) of drip coffee. Arabica coffee typically contains half the caffeine of the robusta variety. In general, dark-roast coffee has very slightly less caffeine than lighter roasts because the roasting process reduces caffeine content of the bean by a small amount.", "title": "Products" }, { "paragraph_id": 80, "text": "Tea contains more caffeine than coffee by dry weight. A typical serving, however, contains much less, since less of the product is used as compared to an equivalent serving of coffee. Also contributing to caffeine content are growing conditions, processing techniques, and other variables. Thus, teas contain varying amounts of caffeine.", "title": "Products" }, { "paragraph_id": 81, "text": "Tea contains small amounts of theobromine and slightly higher levels of theophylline than coffee. Preparation and many other factors have a significant impact on tea, and color is a very poor indicator of caffeine content. Teas like the pale Japanese green tea, gyokuro, for example, contain far more caffeine than much darker teas like lapsang souchong, which has very little.", "title": "Products" }, { "paragraph_id": 82, "text": "Caffeine is also a common ingredient of soft drinks, such as cola, originally prepared from kola nuts. Soft drinks typically contain 0 to 55 milligrams of caffeine per 12 ounce (350 mL) serving. By contrast, energy drinks, such as Red Bull, can start at 80 milligrams of caffeine per serving. The caffeine in these drinks either originates from the ingredients used or is an additive derived from the product of decaffeination or from chemical synthesis. Guarana, a prime ingredient of energy drinks, contains large amounts of caffeine with small amounts of theobromine and theophylline in a naturally occurring slow-release excipient.", "title": "Products" }, { "paragraph_id": 83, "text": "Chocolate derived from cocoa beans contains a small amount of caffeine. The weak stimulant effect of chocolate may be due to a combination of theobromine and theophylline, as well as caffeine. A typical 28-gram serving of a milk chocolate bar has about as much caffeine as a cup of decaffeinated coffee. By weight, dark chocolate has one to two times the amount of caffeine as coffee: 80–160 mg per 100 g. Higher percentages of cocoa such as 90% amount to 200 mg per 100 g approximately and thus, a 100-gram 85% cocoa chocolate bar contains about 195 mg caffeine.", "title": "Products" }, { "paragraph_id": 84, "text": "Tablets offer several advantages over coffee, tea, and other caffeinated beverages, including convenience, known dosage, and avoidance of concomitant intake of sugar, acids, and fluids. A use of caffeine in this form is said to improve mental alertness. These tablets are commonly used by students studying for their exams and by people who work or drive for long hours.", "title": "Products" }, { "paragraph_id": 85, "text": "One U.S. company is marketing oral dissolvable caffeine strips. Another intake route is SpazzStick, a caffeinated lip balm. Alert Energy Caffeine Gum was introduced in the United States in 2013, but was voluntarily withdrawn after an announcement of an investigation by the FDA of the health effects of added caffeine in foods.", "title": "Products" }, { "paragraph_id": 86, "text": "Similar to an e-cigarette, a caffeine inhaler may be used to deliver caffeine or a stimulant like guarana by vaping. In 2012, the FDA sent a warning letter to one of the companies marketing an inhaler, expressing concerns for the lack of safety information available about inhaled caffeine.", "title": "Products" }, { "paragraph_id": 87, "text": "According to Chinese legend, the Chinese emperor Shennong, reputed to have reigned in about 3000 BCE, inadvertently discovered tea when he noted that when certain leaves fell into boiling water, a fragrant and restorative drink resulted. Shennong is also mentioned in Lu Yu's Cha Jing, a famous early work on the subject of tea.", "title": "History" }, { "paragraph_id": 88, "text": "The earliest credible evidence of either coffee drinking or knowledge of the coffee plant appears in the middle of the fifteenth century, in the Sufi monasteries of the Yemen in southern Arabia. From Mocha, coffee spread to Egypt and North Africa, and by the 16th century, it had reached the rest of the Middle East, Persia and Turkey. From the Middle East, coffee drinking spread to Italy, then to the rest of Europe, and coffee plants were transported by the Dutch to the East Indies and to the Americas.", "title": "History" }, { "paragraph_id": 89, "text": "Kola nut use appears to have ancient origins. It is chewed in many West African cultures, in both private and social settings, to restore vitality and ease hunger pangs.", "title": "History" }, { "paragraph_id": 90, "text": "The earliest evidence of cocoa bean use comes from residue found in an ancient Mayan pot dated to 600 BCE. Also, chocolate was consumed in a bitter and spicy drink called xocolatl, often seasoned with vanilla, chile pepper, and achiote. Xocolatl was believed to fight fatigue, a belief probably attributable to the theobromine and caffeine content. Chocolate was an important luxury good throughout pre-Columbian Mesoamerica, and cocoa beans were often used as currency.", "title": "History" }, { "paragraph_id": 91, "text": "Xocolatl was introduced to Europe by the Spaniards, and became a popular beverage by 1700. The Spaniards also introduced the cacao tree into the West Indies and the Philippines.", "title": "History" }, { "paragraph_id": 92, "text": "The leaves and stems of the yaupon holly (Ilex vomitoria) were used by Native Americans to brew a tea called asi or the \"black drink\". Archaeologists have found evidence of this use far into antiquity, possibly dating to Late Archaic times.", "title": "History" }, { "paragraph_id": 93, "text": "In 1819, the German chemist Friedlieb Ferdinand Runge isolated relatively pure caffeine for the first time; he called it \"Kaffebase\" (i.e., a base that exists in coffee). According to Runge, he did this at the behest of Johann Wolfgang von Goethe. In 1821, caffeine was isolated both by the French chemist Pierre Jean Robiquet and by another pair of French chemists, Pierre-Joseph Pelletier and Joseph Bienaimé Caventou, according to Swedish chemist Jöns Jacob Berzelius in his yearly journal. Furthermore, Berzelius stated that the French chemists had made their discoveries independently of any knowledge of Runge's or each other's work. However, Berzelius later acknowledged Runge's priority in the extraction of caffeine, stating: \"However, at this point, it should not remain unmentioned that Runge (in his Phytochemical Discoveries, 1820, pages 146–147) specified the same method and described caffeine under the name Caffeebase a year earlier than Robiquet, to whom the discovery of this substance is usually attributed, having made the first oral announcement about it at a meeting of the Pharmacy Society in Paris.\"", "title": "History" }, { "paragraph_id": 94, "text": "Pelletier's article on caffeine was the first to use the term in print (in the French form Caféine from the French word for coffee: café). It corroborates Berzelius's account:", "title": "History" }, { "paragraph_id": 95, "text": "Caffeine, noun (feminine). Crystallizable substance discovered in coffee in 1821 by Mr. Robiquet. During the same period – while they were searching for quinine in coffee because coffee is considered by several doctors to be a medicine that reduces fevers and because coffee belongs to the same family as the cinchona [quinine] tree – on their part, Messrs. Pelletier and Caventou obtained caffeine; but because their research had a different goal and because their research had not been finished, they left priority on this subject to Mr. Robiquet. We do not know why Mr. Robiquet has not published the analysis of coffee which he read to the Pharmacy Society. Its publication would have allowed us to make caffeine better known and give us accurate ideas of coffee's composition ...", "title": "History" }, { "paragraph_id": 96, "text": "Robiquet was one of the first to isolate and describe the properties of pure caffeine, whereas Pelletier was the first to perform an elemental analysis.", "title": "History" }, { "paragraph_id": 97, "text": "In 1827, M. Oudry isolated \"théine\" from tea, but in 1838 it was proved by Mulder and by Carl Jobst that theine was actually the same as caffeine.", "title": "History" }, { "paragraph_id": 98, "text": "In 1895, German chemist Hermann Emil Fischer (1852–1919) first synthesized caffeine from its chemical components (i.e. a \"total synthesis\"), and two years later, he also derived the structural formula of the compound. This was part of the work for which Fischer was awarded the Nobel Prize in 1902.", "title": "History" }, { "paragraph_id": 99, "text": "Because it was recognized that coffee contained some compound that acted as a stimulant, first coffee and later also caffeine has sometimes been subject to regulation. For example, in the 16th century Islamists in Mecca and in the Ottoman Empire made coffee illegal for some classes. Charles II of England tried to ban it in 1676, Frederick II of Prussia banned it in 1777, and coffee was banned in Sweden at various times between 1756 and 1823.", "title": "History" }, { "paragraph_id": 100, "text": "In 1911, caffeine became the focus of one of the earliest documented health scares, when the US government seized 40 barrels and 20 kegs of Coca-Cola syrup in Chattanooga, Tennessee, alleging the caffeine in its drink was \"injurious to health\". Although the Supreme Court later ruled in favor of Coca-Cola in United States v. Forty Barrels and Twenty Kegs of Coca-Cola, two bills were introduced to the U.S. House of Representatives in 1912 to amend the Pure Food and Drug Act, adding caffeine to the list of \"habit-forming\" and \"deleterious\" substances, which must be listed on a product's label.", "title": "History" }, { "paragraph_id": 101, "text": "The Food and Drug Administration (FDA) in the United States currently allows only beverages containing less than 0.02% caffeine; but caffeine powder, which is sold as a dietary supplement, is unregulated. It is a regulatory requirement that the label of most prepackaged foods must declare a list of ingredients, including food additives such as caffeine, in descending order of proportion. However, there is no regulatory provision for mandatory quantitative labeling of caffeine, (e.g., milligrams caffeine per stated serving size). There are a number of food ingredients that naturally contain caffeine. These ingredients must appear in food ingredient lists. However, as is the case for \"food additive caffeine\", there is no requirement to identify the quantitative amount of caffeine in composite foods containing ingredients that are natural sources of caffeine. While coffee or chocolate are broadly recognized as caffeine sources, some ingredients (e.g., guarana, yerba maté) are likely less recognized as caffeine sources. For these natural sources of caffeine, there is no regulatory provision requiring that a food label identify the presence of caffeine nor state the amount of caffeine present in the food.", "title": "Society and culture" }, { "paragraph_id": 102, "text": "Global consumption of caffeine has been estimated at 120,000 tonnes per year, making it the world's most popular psychoactive substance. This amounts to an average of one serving of a caffeinated beverage for every person every day. The consumption of caffeine has remained stable between 1997 and 2015. Coffee, tea and soft drinks are the most important caffeine sources, with energy drinks contributing little to the total caffeine intake across all age groups.", "title": "Society and culture" }, { "paragraph_id": 103, "text": "Until recently, the Seventh-day Adventist Church asked for its members to \"abstain from caffeinated drinks\", but has removed this from baptismal vows (while still recommending abstention as policy). Some from these religions believe that one is not supposed to consume a non-medical, psychoactive substance, or believe that one is not supposed to consume a substance that is addictive. The Church of Jesus Christ of Latter-day Saints has said the following with regard to caffeinated beverages: \"... the Church revelation spelling out health practices (Doctrine and Covenants 89) does not mention the use of caffeine. The Church's health guidelines prohibit alcoholic drinks, smoking or chewing of tobacco, and 'hot drinks' – taught by Church leaders to refer specifically to tea and coffee.\"", "title": "Society and culture" }, { "paragraph_id": 104, "text": "Gaudiya Vaishnavas generally also abstain from caffeine, because they believe it clouds the mind and overstimulates the senses. To be initiated under a guru, one must have had no caffeine, alcohol, nicotine or other drugs, for at least a year.", "title": "Society and culture" }, { "paragraph_id": 105, "text": "Caffeinated beverages are widely consumed by Muslims today. In the 16th century, some Muslim authorities made unsuccessful attempts to ban them as forbidden \"intoxicating beverages\" under Islamic dietary laws.", "title": "Society and culture" }, { "paragraph_id": 106, "text": "Recently discovered bacteria Pseudomonas putida CBB5 can live on pure caffeine and can cleave caffeine into carbon dioxide and ammonia.", "title": "Other organisms" }, { "paragraph_id": 107, "text": "Caffeine is toxic to birds and to dogs and cats, and has a pronounced adverse effect on mollusks, various insects, and spiders. This is at least partly due to a poor ability to metabolize the compound, causing higher levels for a given dose per unit weight. Caffeine has also been found to enhance the reward memory of honey bees.", "title": "Other organisms" }, { "paragraph_id": 108, "text": "Caffeine has been used to double chromosomes in haploid wheat.", "title": "Research" } ]	Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. It is mainly used as a eugeroic or as a mild cognitive enhancer to increase alertness and attentional performance. Caffeine acts by blocking binding of adenosine to the adenosine A1 receptor, which enhances release of the neurotransmitter acetylcholine. Caffeine has a three-dimensional structure similar to that of adenosine, which allows it to bind and block its receptors. Caffeine also increases cyclic AMP levels through nonselective inhibition of phosphodiesterase. Caffeine is a bitter, white crystalline purine, a methylxanthine alkaloid, and is chemically related to the adenine and guanine bases of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). It is found in the seeds, fruits, nuts, or leaves of a number of plants native to Africa, East Asia and South America, and helps to protect them against herbivores and from competition by preventing the germination of nearby seeds, as well as encouraging consumption by select animals such as honey bees. The best-known source of caffeine is the coffee bean, the seed of the Coffea plant. People may drink beverages containing caffeine to relieve or prevent drowsiness and to improve cognitive performance. To make these drinks, caffeine is extracted by steeping the plant product in water, a process called infusion. Caffeine-containing drinks, such as coffee, tea, and cola, are consumed globally in high volumes. In 2020, almost 10 million tonnes of coffee beans were consumed globally. Caffeine is the world's most widely consumed psychoactive drug. Unlike most other psychoactive substances, caffeine remains largely unregulated and legal in nearly all parts of the world. Caffeine is also an outlier as its use is seen as socially acceptable in most cultures and even encouraged in others. Caffeine has both positive and negative health effects. It can treat and prevent the premature infant breathing disorders bronchopulmonary dysplasia of prematurity and apnea of prematurity. Caffeine citrate is on the WHO Model List of Essential Medicines. It may confer a modest protective effect against some diseases, including Parkinson's disease. Some people experience sleep disruption or anxiety if they consume caffeine, but others show little disturbance. Evidence of a risk during pregnancy is equivocal; some authorities recommend that pregnant women limit caffeine to the equivalent of two cups of coffee per day or less. Caffeine can produce a mild form of drug dependence – associated with withdrawal symptoms such as sleepiness, headache, and irritability – when an individual stops using caffeine after repeated daily intake. Tolerance to the autonomic effects of increased blood pressure and heart rate, and increased urine output, develops with chronic use. Caffeine is classified by the US Food and Drug Administration as generally recognized as safe. Toxic doses, over 10 grams per day for an adult, are much higher than the typical dose of under 500 milligrams per day. The European Food Safety Authority reported that up to 400 mg of caffeine per day does not raise safety concerns for non-pregnant adults, while intakes up to 200 mg per day for pregnant and lactating women do not raise safety concerns for the fetus or the breast-fed infants. A cup of coffee contains 80–175 mg of caffeine, depending on what "bean" (seed) is used, how it is roasted, and how it is prepared. Thus it requires roughly 50–100 ordinary cups of coffee to reach the toxic dose. However, pure powdered caffeine, which is available as a dietary supplement, can be lethal in tablespoon-sized amounts.	2001-10-24T20:17:44Z	2023-12-28T19:26:12Z	[ "Template:Main", "Template:Clarify", "Template:Reflist", "Template:Cite news", "Template:Cite encyclopedia", "Template:Navboxes", "Template:See also", "Template:Convert", "Template:Synapse map", "Template:Nts", "Template:Blockquote", "Template:Cite book", "Template:Cite patent", "Template:Stimulants", "Template:About", "Template:Pp-move-indef", "Template:Cvt", "Template:Cite magazine", "Template:Harvnb", "Template:Sister project links", "Template:Other dermatological preparations", "Template:Use dmy dates", "Template:Smallcaps all", "Template:Frac", "Template:Cite journal", "Template:Cite web", "Template:Pp-semi-indef", "Template:TOC limit", "Template:As of", "Template:Unreliable source?", "Template:Globalize", "Template:Notelist", "Template:Coffee", "Template:Teas", "Template:Short description", "Template:Citation needed", "Template:Portal bar", "Template:Authority control", "Template:Infobox drug", "Template:Expand section", "Template:Circa", "Template:Efn", "Template:Lang", "Template:Cbignore", "Template:Cite report", "Template:Soft drink", "Template:Anchor", "Template:Nowrap", "Template:CO2", "Template:Page needed", "Template:Chocolate" ]	https://en.wikipedia.org/wiki/Caffeine
6,874	Cyc	Cyc (pronounced /ˈsaɪk/ SYKE) is a long-term artificial intelligence project that aims to assemble a comprehensive ontology and knowledge base that spans the basic concepts and rules about how the world works. Hoping to capture common sense knowledge, Cyc focuses on implicit knowledge that other AI platforms may take for granted. This is contrasted with facts one might find somewhere on the internet or retrieve via a search engine or Wikipedia. Cyc enables semantic reasoners to perform human-like reasoning and be less "brittle" when confronted with novel situations. Douglas Lenat began the project in July 1984 at MCC, where he was Principal Scientist 1984–1994, and then, since January 1995, has been under active development by the Cycorp company, where he was the CEO. The need for a massive symbolic artificial intelligence project of this kind was born in the early 1980s. Early AI researchers had ample experience over the previous 25 years with AI programs that would generate encouraging early results but then fail to "scale up"—move beyond the 'training set' to tackle a broader range of cases. Douglas Lenat and Alan Kay publicized this need, and they organized a meeting at Stanford in 1983 to address the problem. The back-of-the-envelope calculations by Lenat, Kay, and their colleagues (including Marvin Minsky, Allen Newell, Edward Feigenbaum, and John McCarthy) indicated that that effort would require between 1,000 and 3,000 person-years of effort. Events within a year of that meeting enabled an effort of that scale to get underway. The project began in July 1984 as the flagship project of the 400-person Microelectronics and Computer Technology Corporation (MCC), a research consortium started by two dozen large United States based corporations "to counter a then ominous Japanese effort in AI, the so-called "fifth-generation" project." The US Government reacted to the Fifth Generation threat by passing the National Cooperative Research Act of 1984, which for the first time allowed US companies to "collude" on long-term high-risk high-payoff research, and MCC and Sematech sprang up to take advantage of that ten-year opportunity. MCC's first President and CEO was Bobby Ray Inman, former NSA Director and Central Intelligence Agency deputy director. The objective of the Cyc project was to codify, in machine-usable form, the millions of pieces of knowledge that compose human common sense. This entailed, along the way, (1) developing an adequately expressive representation language, CycL, (2) developing an ontology spanning all human concepts down to some appropriate level of detail, (3) developing a knowledge base on that ontological framework, comprising all human knowledge about those concepts down to some appropriate level of detail, and (4) developing an inference engine exponentially faster than those used in then-conventional expert systems, to be able to infer the same types and depth of conclusions that humans are capable of, given their knowledge of the world. In slightly more detail: CycL has a publicly released specification and dozens of HL modules were described in Lenat and Guha's textbook, but the actual Cyc inference engine code, and the full list of 1000+ HL modules, is Cycorp-proprietary. The name "Cyc" (from "encyclopedia", pronounced [saɪk], like "syke") is a registered trademark owned by Cycorp. Access to Cyc is through paid licenses, but bona fide AI research groups are given research-only no-cost licenses (cf. ResearchCyc); as of 2017, over 600 such groups worldwide have these licenses. Typical pieces of knowledge represented in the Cyc knowledge base are "Every tree is a plant" and "Plants die eventually". When asked whether trees die, the inference engine can draw the obvious conclusion and answer the question correctly. Most of Cyc's knowledge, outside math, is only true by default. For example, Cyc knows that as a default parents love their children, when you're made happy you smile, taking your first step is a big accomplishment, when someone you love has a big accomplishment that makes you happy, and only adults have children. When asked whether a picture captioned "Someone watching his daughter take her first step" contains a smiling adult person, Cyc can logically infer that the answer is Yes, and "show its work" by presenting the step by step logical argument using those five pieces of knowledge from its knowledge base. These are formulated in the language CycL, which is based on predicate calculus and has a syntax similar to that of the Lisp programming language. In 2008, Cyc resources were mapped to many Wikipedia articles. Cyc is presently connected to Wikidata. Future plans may connect Cyc to both DBpedia and Freebase. Much of the current work Cyc continues to be knowledge engineering, representing facts about the world by hand, and implementing efficient inference mechanisms on that knowledge. Increasingly, however, work at Cycorp involves giving the Cyc system the ability to communicate with end users in natural language, and to assist with the ongoing knowledge formation process via machine learning and natural-language understanding. Another large effort at Cycorp is building a suite of Cyc-powered ontological engineering tools to lower the bar to entry for individuals to contribute to, edit, browse, and query Cyc. Like many companies, Cycorp has ambitions to use Cyc's natural-language processing to parse the entire internet to extract structured data; unlike all others, it is able to call on the Cyc system itself to act as an inductive bias and as an adjudicator of ambiguity, metaphor, and ellipsis. There are few, if any, systematic benchmark studies of Cyc's performance. The concept names in Cyc are CycL terms or constants. Constants start with an optional #$ and are case-sensitive. There are constants for: Two important binary predicates are #$isa and #$genls. The first one describes that one item is an instance of some collection, the second one that one collection is a subcollection of another one. Facts about concepts are asserted using certain CycL sentences. Predicates are written before their arguments, in parentheses: "Bill Clinton belongs to the collection of U.S. presidents." "All trees are plants." "Paris is the capital of France." Sentences can also contain variables, strings starting with ?. These sentences are called "rules". One important rule asserted about the #$isa predicate reads: "If OBJ is an instance of the collection SUBSET and SUBSET is a subcollection of SUPERSET, then OBJ is an instance of the collection SUPERSET". Another typical example is which means that for every instance of the collection #$ChordataPhylum (i.e. for every chordate), there exists a female animal (instance of #$FemaleAnimal), which is its mother (described by the predicate #$biologicalMother). The knowledge base is divided into microtheories (Mt), collections of concepts and facts typically pertaining to one particular realm of knowledge. Unlike the knowledge base as a whole, each microtheory must be free from monotonic contradictions. Each microtheory is a first-class object in the Cyc ontology; it has a name that is a regular constant; microtheory constants contain the string Mt by convention. An example is #$MathMt, the microtheory containing mathematical knowledge. The microtheories can inherit from each other and are organized in a hierarchy: one specialization of #$MathMt is #$GeometryGMt, the microtheory about geometry. An inference engine is a computer program that tries to derive answers from a knowledge base. The Cyc inference engine performs general logical deduction (including modus ponens, modus tollens, universal quantification and existential quantification). It also performs inductive reasoning, statistical machine learning and symbolic machine learning, and abductive reasoning (but of course sparingly and using the existing knowledge base as a filter and guide). The first version of OpenCyc was released in spring 2002 and contained only 6,000 concepts and 60,000 facts. The knowledge base was released under the Apache License. Cycorp stated its intention to release OpenCyc under parallel, unrestricted licences to meet the needs of its users. The CycL and SubL interpreter (the program that allows users to browse and edit the database as well as to draw inferences) was released free of charge, but only as a binary, without source code. It was made available for Linux and Microsoft Windows. The open source Texai project released the RDF-compatible content extracted from OpenCyc. A version of OpenCyc, 4.0, was released in June 2012. OpenCyc 4.0 included much of the Cyc ontology at that time, containing hundreds of thousands of terms, along with millions of assertions relating the terms to each other; however, these are mainly taxonomic assertions, not the complex rules available in Cyc. The OpenCyc 4.0 knowledge base contained 239,000 concepts and 2,093,000 facts. The main point of releasing OpenCyc was to help AI researchers understand what was missing from what they now call ontologies and knowledge graphs. It's useful and important to have properly taxonomized concepts like person, night, sleep, lying down, waking, happy, etc., but what's missing from the OpenCyc content about those terms, but present in the Cyc KB content, are the various rules of thumb that most of us share about those terms: that (as a default, in the ModernWesternHumanCultureMt) each person sleeps at night, sleeps lying down, can be woken up, is not happy about being woken up, and so on. That point does not require continually-updated releases of OpenCyc, so, as of 2017, OpenCyc is no longer available. In July 2006, Cycorp released the executable of ResearchCyc 1.0, a version of Cyc aimed at the research community, at no charge. (ResearchCyc was in beta stage of development during all of 2004; a beta version was released in February 2005.) In addition to the taxonomic information contained in OpenCyc, ResearchCyc includes significantly more semantic knowledge (i.e., additional facts and rules of thumb) involving the concepts in its knowledge base; it also includes a large lexicon, English parsing and generation tools, and Java-based interfaces for knowledge editing and querying. In addition it contains a system for ontology-based data integration. As of 2017, regular releases of ResearchCyc continued to appear, with 600 research groups utilizing licenses around the world at no cost for noncommercial research purposes. As of December 2019, ResearchCyc is no longer supported. Cycorp expects to improve and overhaul tools for external developers over the coming years. There have been over a hundred successful applications of Cyc; listed here are a few mutually dissimilar instances: For over a decade, Glaxo has used Cyc to semi-automatically integrate all the large (hundreds of thousands of terms) thesauri of pharmaceutical-industry terms that reflect differing usage across companies, countries, years, and sub-industries. This ontology integration task requires domain knowledge, shallow semantic knowledge, but also arbitrarily deep common sense knowledge and reasoning. Pharma vocabulary varies across countries, (sub-) industries, companies, departments, and decades of time. E.g., what’s a gel pak? What’s the “street name” for ranitidine hydrochloride? Each of these n controlled vocabularies is an ontology with approximately 300k terms. Glaxo researchers need to issue a query in their current vocabulary, have it translated into a neutral “true meaning”, and then have that transformed in the opposite direction to find potential matches against documents each of which was written to comply with a particular known vocabulary. They had been using a large staff to do that manually. Cyc is used as the universal interlingua capable of representing the union of all the terms’ “true meanings”, and capable of representing the 300k transformations between each of those controlled vocabularies and Cyc, thereby converting an n² problem into a linear one without introducing the usual sort of “telephone game” attenuation of meaning. Furthermore, creating each of those 300k mappings for each thesaurus is done in a largely automated fashion, by Cyc. The comprehensive Terrorism Knowledge Base was an application of Cyc in development that tried to ultimately contain all relevant knowledge about "terrorist" groups, their members, leaders, ideology, founders, sponsors, affiliations, facilities, locations, finances, capabilities, intentions, behaviors, tactics, and full descriptions of specific terrorist events. The knowledge is stored as statements in mathematical logic, suitable for computer understanding and reasoning. The Cleveland Clinic has used Cyc to develop a natural-language query interface of biomedical information, spanning decades of information on cardiothoracic surgeries. A query is parsed into a set of CycL (higher-order logic) fragments with open variables (e.g., "this question is talking about a person who developed an endocarditis infection", "this question is talking about a subset of Cleveland Clinic patients who underwent surgery there in 2009", etc.); then various constraints are applied (medical domain knowledge, common sense, discourse pragmatics, syntax) to see how those fragments could possibly fit together into one semantically meaningful formal query; significantly, in most cases, there is exactly one and only one such way of incorporating and integrating those fragments. Integrating the fragments involves (i) deciding which open variables in which fragments actually represent the same variable, and (ii) for all the final variables, decide what order and scope of quantification that variable should have, and what type (universal or existential). That logical (CycL) query is then converted into a SPARQL query that is passed to the CCF SemanticDB that is its data lake. One Cyc application aims to help students doing math at a 6th grade level, helping them much more deeply understand that subject matter. It is based on the experience that we often have thought we understood something, but only really understood it after we had to explain or teach it to someone else. Unlike almost all other educational software, where the computer plays the role of the teacher, this application of Cyc, called MathCraft, has Cyc play the role of a fellow student who is always slightly more confused than you, the user, are about the subject. The user's role is to observe the Cyc avatar and give it advice, correct its errors, mentor it, get it to see what it's doing wrong, etc. As the user gives good advice, Cyc allows the avatar to make fewer mistakes of that type, hence, from the user's point of view, it seems as though the user has just successfully taught it something. This is a variation of learning by teaching. The Cyc project has been described as "one of the most controversial endeavors of the artificial intelligence history". Catherine Havasi, CEO of Luminoso, says that Cyc is the predecessor project to IBM's Watson. Machine-learning scientist Pedro Domingos refers to the project as a "catastrophic failure" for several reasons, including the unending amount of data required to produce any viable results and the inability for Cyc to evolve on its own. Robin Hanson, a professor of economics at George Mason University, gives a more balanced analysis: Of course the CYC project is open to criticism on its many particular choices. People have complained about its logic-like and language-like representations, about its selection of prototypical cases to build from (e.g., encyclopedia articles), about its focus on answering over acting, about how often it rebuilds vs. maintaining legacy systems, and about being private vs. publishing everything. But any large project like this would produce such disputes, and it is not obvious any of its choices have been seriously wrong. They had to start somewhere, and in my opinion they have now collected a knowledge base with a truly spectacular size, scope, and integration. Other architectures may well work better, but if knowing lots is anywhere near as important as Lenat thinks, I’d expect serious AI attempts to import CYC’s knowledge, translating it into a new representation. No other source has anywhere near CYC’s size, scope, and integration. A similar sentiment was expressed by Marvin Minsky: "Unfortunately, the strategies most popular among AI researchers in the 1980s have come to a dead end," said Minsky. So-called “expert systems,” which emulated human expertise within tightly defined subject areas like law and medicine, could match users’ queries to relevant diagnoses, papers and abstracts, yet they could not learn concepts that most children know by the time they are 3 years old. “For each different kind of problem,” said Minsky, “the construction of expert systems had to start all over again, because they didn’t accumulate common-sense knowledge.” Only one researcher has committed himself to the colossal task of building a comprehensive common-sense reasoning system, according to Minsky. Douglas Lenat, through his Cyc project, has directed the line-by-line entry of more than 1 million rules into a commonsense knowledge base. Gary Marcus, a professor of psychology and neural science at New York University and the cofounder of an AI company called Geometric Intelligence, says "it represents an approach that is very different from all the deep-learning stuff that has been in the news.” This is consistent with Doug Lenat's position that "Sometimes the veneer of intelligence is not enough". Stephen Wolfram writes: In the early days of the field of artificial intelligence, there were plenty of discussions of “knowledge representation”, with approaches based variously on the grammar of natural language, the structure of predicate logic or the formalism of databases. Very few large-scale projects were attempted (Doug Lenat’s Cyc being a notable counterexample). Marcus writes: The field might well benefit if CYC were systematically described and evaluated. If CYC has solved some significant fraction of commonsense reasoning, then it is critical to know that, both as a useful tool, and as a starting point for further research. If CYC has run into difficulties, it would be useful to learn from the mistakes that were made. If CYC is entirely useless, then researchers can at least stop worrying about whether they are reinventing the wheel. Every few years since it began publishing (1993), there is a new Wired Magazine article about Cyc, some positive and some negative (including one issue which contained one of each). This is a list of some of the notable people who work or have worked on Cyc either while it was a project at MCC (where Cyc was first started) or Cycorp.	[ { "paragraph_id": 0, "text": "Cyc (pronounced /ˈsaɪk/ SYKE) is a long-term artificial intelligence project that aims to assemble a comprehensive ontology and knowledge base that spans the basic concepts and rules about how the world works. Hoping to capture common sense knowledge, Cyc focuses on implicit knowledge that other AI platforms may take for granted. This is contrasted with facts one might find somewhere on the internet or retrieve via a search engine or Wikipedia. Cyc enables semantic reasoners to perform human-like reasoning and be less \"brittle\" when confronted with novel situations.", "title": "" }, { "paragraph_id": 1, "text": "Douglas Lenat began the project in July 1984 at MCC, where he was Principal Scientist 1984–1994, and then, since January 1995, has been under active development by the Cycorp company, where he was the CEO.", "title": "" }, { "paragraph_id": 2, "text": "The need for a massive symbolic artificial intelligence project of this kind was born in the early 1980s. Early AI researchers had ample experience over the previous 25 years with AI programs that would generate encouraging early results but then fail to \"scale up\"—move beyond the 'training set' to tackle a broader range of cases. Douglas Lenat and Alan Kay publicized this need, and they organized a meeting at Stanford in 1983 to address the problem. The back-of-the-envelope calculations by Lenat, Kay, and their colleagues (including Marvin Minsky, Allen Newell, Edward Feigenbaum, and John McCarthy) indicated that that effort would require between 1,000 and 3,000 person-years of effort. Events within a year of that meeting enabled an effort of that scale to get underway.", "title": "Overview" }, { "paragraph_id": 3, "text": "The project began in July 1984 as the flagship project of the 400-person Microelectronics and Computer Technology Corporation (MCC), a research consortium started by two dozen large United States based corporations \"to counter a then ominous Japanese effort in AI, the so-called \"fifth-generation\" project.\" The US Government reacted to the Fifth Generation threat by passing the National Cooperative Research Act of 1984, which for the first time allowed US companies to \"collude\" on long-term high-risk high-payoff research, and MCC and Sematech sprang up to take advantage of that ten-year opportunity. MCC's first President and CEO was Bobby Ray Inman, former NSA Director and Central Intelligence Agency deputy director.", "title": "Overview" }, { "paragraph_id": 4, "text": "The objective of the Cyc project was to codify, in machine-usable form, the millions of pieces of knowledge that compose human common sense. This entailed, along the way, (1) developing an adequately expressive representation language, CycL, (2) developing an ontology spanning all human concepts down to some appropriate level of detail, (3) developing a knowledge base on that ontological framework, comprising all human knowledge about those concepts down to some appropriate level of detail, and (4) developing an inference engine exponentially faster than those used in then-conventional expert systems, to be able to infer the same types and depth of conclusions that humans are capable of, given their knowledge of the world.", "title": "Overview" }, { "paragraph_id": 5, "text": "In slightly more detail:", "title": "Overview" }, { "paragraph_id": 6, "text": "CycL has a publicly released specification and dozens of HL modules were described in Lenat and Guha's textbook, but the actual Cyc inference engine code, and the full list of 1000+ HL modules, is Cycorp-proprietary.", "title": "Overview" }, { "paragraph_id": 7, "text": "The name \"Cyc\" (from \"encyclopedia\", pronounced [saɪk], like \"syke\") is a registered trademark owned by Cycorp. Access to Cyc is through paid licenses, but bona fide AI research groups are given research-only no-cost licenses (cf. ResearchCyc); as of 2017, over 600 such groups worldwide have these licenses.", "title": "Overview" }, { "paragraph_id": 8, "text": "Typical pieces of knowledge represented in the Cyc knowledge base are \"Every tree is a plant\" and \"Plants die eventually\". When asked whether trees die, the inference engine can draw the obvious conclusion and answer the question correctly.", "title": "Overview" }, { "paragraph_id": 9, "text": "Most of Cyc's knowledge, outside math, is only true by default. For example, Cyc knows that as a default parents love their children, when you're made happy you smile, taking your first step is a big accomplishment, when someone you love has a big accomplishment that makes you happy, and only adults have children. When asked whether a picture captioned \"Someone watching his daughter take her first step\" contains a smiling adult person, Cyc can logically infer that the answer is Yes, and \"show its work\" by presenting the step by step logical argument using those five pieces of knowledge from its knowledge base. These are formulated in the language CycL, which is based on predicate calculus and has a syntax similar to that of the Lisp programming language.", "title": "Overview" }, { "paragraph_id": 10, "text": "In 2008, Cyc resources were mapped to many Wikipedia articles. Cyc is presently connected to Wikidata. Future plans may connect Cyc to both DBpedia and Freebase.", "title": "Overview" }, { "paragraph_id": 11, "text": "Much of the current work Cyc continues to be knowledge engineering, representing facts about the world by hand, and implementing efficient inference mechanisms on that knowledge. Increasingly, however, work at Cycorp involves giving the Cyc system the ability to communicate with end users in natural language, and to assist with the ongoing knowledge formation process via machine learning and natural-language understanding. Another large effort at Cycorp is building a suite of Cyc-powered ontological engineering tools to lower the bar to entry for individuals to contribute to, edit, browse, and query Cyc.", "title": "Overview" }, { "paragraph_id": 12, "text": "Like many companies, Cycorp has ambitions to use Cyc's natural-language processing to parse the entire internet to extract structured data; unlike all others, it is able to call on the Cyc system itself to act as an inductive bias and as an adjudicator of ambiguity, metaphor, and ellipsis. There are few, if any, systematic benchmark studies of Cyc's performance.", "title": "Overview" }, { "paragraph_id": 13, "text": "The concept names in Cyc are CycL terms or constants. Constants start with an optional #$ and are case-sensitive. There are constants for:", "title": "Knowledge base" }, { "paragraph_id": 14, "text": "Two important binary predicates are #$isa and #$genls. The first one describes that one item is an instance of some collection, the second one that one collection is a subcollection of another one. Facts about concepts are asserted using certain CycL sentences. Predicates are written before their arguments, in parentheses:", "title": "Knowledge base" }, { "paragraph_id": 15, "text": "\"Bill Clinton belongs to the collection of U.S. presidents.\"", "title": "Knowledge base" }, { "paragraph_id": 16, "text": "\"All trees are plants.\"", "title": "Knowledge base" }, { "paragraph_id": 17, "text": "\"Paris is the capital of France.\"", "title": "Knowledge base" }, { "paragraph_id": 18, "text": "Sentences can also contain variables, strings starting with ?. These sentences are called \"rules\". One important rule asserted about the #$isa predicate reads:", "title": "Knowledge base" }, { "paragraph_id": 19, "text": "\"If OBJ is an instance of the collection SUBSET and SUBSET is a subcollection of SUPERSET, then OBJ is an instance of the collection SUPERSET\". Another typical example is", "title": "Knowledge base" }, { "paragraph_id": 20, "text": "which means that for every instance of the collection #$ChordataPhylum (i.e. for every chordate), there exists a female animal (instance of #$FemaleAnimal), which is its mother (described by the predicate #$biologicalMother).", "title": "Knowledge base" }, { "paragraph_id": 21, "text": "The knowledge base is divided into microtheories (Mt), collections of concepts and facts typically pertaining to one particular realm of knowledge. Unlike the knowledge base as a whole, each microtheory must be free from monotonic contradictions. Each microtheory is a first-class object in the Cyc ontology; it has a name that is a regular constant; microtheory constants contain the string Mt by convention. An example is #$MathMt, the microtheory containing mathematical knowledge. The microtheories can inherit from each other and are organized in a hierarchy: one specialization of #$MathMt is #$GeometryGMt, the microtheory about geometry.", "title": "Knowledge base" }, { "paragraph_id": 22, "text": "An inference engine is a computer program that tries to derive answers from a knowledge base. The Cyc inference engine performs general logical deduction (including modus ponens, modus tollens, universal quantification and existential quantification). It also performs inductive reasoning, statistical machine learning and symbolic machine learning, and abductive reasoning (but of course sparingly and using the existing knowledge base as a filter and guide).", "title": "Inference engine" }, { "paragraph_id": 23, "text": "The first version of OpenCyc was released in spring 2002 and contained only 6,000 concepts and 60,000 facts. The knowledge base was released under the Apache License. Cycorp stated its intention to release OpenCyc under parallel, unrestricted licences to meet the needs of its users. The CycL and SubL interpreter (the program that allows users to browse and edit the database as well as to draw inferences) was released free of charge, but only as a binary, without source code. It was made available for Linux and Microsoft Windows. The open source Texai project released the RDF-compatible content extracted from OpenCyc. A version of OpenCyc, 4.0, was released in June 2012. OpenCyc 4.0 included much of the Cyc ontology at that time, containing hundreds of thousands of terms, along with millions of assertions relating the terms to each other; however, these are mainly taxonomic assertions, not the complex rules available in Cyc. The OpenCyc 4.0 knowledge base contained 239,000 concepts and 2,093,000 facts.", "title": "Releases" }, { "paragraph_id": 24, "text": "The main point of releasing OpenCyc was to help AI researchers understand what was missing from what they now call ontologies and knowledge graphs. It's useful and important to have properly taxonomized concepts like person, night, sleep, lying down, waking, happy, etc., but what's missing from the OpenCyc content about those terms, but present in the Cyc KB content, are the various rules of thumb that most of us share about those terms: that (as a default, in the ModernWesternHumanCultureMt) each person sleeps at night, sleeps lying down, can be woken up, is not happy about being woken up, and so on. That point does not require continually-updated releases of OpenCyc, so, as of 2017, OpenCyc is no longer available.", "title": "Releases" }, { "paragraph_id": 25, "text": "In July 2006, Cycorp released the executable of ResearchCyc 1.0, a version of Cyc aimed at the research community, at no charge. (ResearchCyc was in beta stage of development during all of 2004; a beta version was released in February 2005.) In addition to the taxonomic information contained in OpenCyc, ResearchCyc includes significantly more semantic knowledge (i.e., additional facts and rules of thumb) involving the concepts in its knowledge base; it also includes a large lexicon, English parsing and generation tools, and Java-based interfaces for knowledge editing and querying. In addition it contains a system for ontology-based data integration. As of 2017, regular releases of ResearchCyc continued to appear, with 600 research groups utilizing licenses around the world at no cost for noncommercial research purposes. As of December 2019, ResearchCyc is no longer supported. Cycorp expects to improve and overhaul tools for external developers over the coming years.", "title": "Releases" }, { "paragraph_id": 26, "text": "There have been over a hundred successful applications of Cyc; listed here are a few mutually dissimilar instances:", "title": "Applications" }, { "paragraph_id": 27, "text": "For over a decade, Glaxo has used Cyc to semi-automatically integrate all the large (hundreds of thousands of terms) thesauri of pharmaceutical-industry terms that reflect differing usage across companies, countries, years, and sub-industries. This ontology integration task requires domain knowledge, shallow semantic knowledge, but also arbitrarily deep common sense knowledge and reasoning. Pharma vocabulary varies across countries, (sub-) industries, companies, departments, and decades of time. E.g., what’s a gel pak? What’s the “street name” for ranitidine hydrochloride? Each of these n controlled vocabularies is an ontology with approximately 300k terms. Glaxo researchers need to issue a query in their current vocabulary, have it translated into a neutral “true meaning”, and then have that transformed in the opposite direction to find potential matches against documents each of which was written to comply with a particular known vocabulary. They had been using a large staff to do that manually. Cyc is used as the universal interlingua capable of representing the union of all the terms’ “true meanings”, and capable of representing the 300k transformations between each of those controlled vocabularies and Cyc, thereby converting an n² problem into a linear one without introducing the usual sort of “telephone game” attenuation of meaning. Furthermore, creating each of those 300k mappings for each thesaurus is done in a largely automated fashion, by Cyc.", "title": "Applications" }, { "paragraph_id": 28, "text": "The comprehensive Terrorism Knowledge Base was an application of Cyc in development that tried to ultimately contain all relevant knowledge about \"terrorist\" groups, their members, leaders, ideology, founders, sponsors, affiliations, facilities, locations, finances, capabilities, intentions, behaviors, tactics, and full descriptions of specific terrorist events. The knowledge is stored as statements in mathematical logic, suitable for computer understanding and reasoning.", "title": "Applications" }, { "paragraph_id": 29, "text": "The Cleveland Clinic has used Cyc to develop a natural-language query interface of biomedical information, spanning decades of information on cardiothoracic surgeries. A query is parsed into a set of CycL (higher-order logic) fragments with open variables (e.g., \"this question is talking about a person who developed an endocarditis infection\", \"this question is talking about a subset of Cleveland Clinic patients who underwent surgery there in 2009\", etc.); then various constraints are applied (medical domain knowledge, common sense, discourse pragmatics, syntax) to see how those fragments could possibly fit together into one semantically meaningful formal query; significantly, in most cases, there is exactly one and only one such way of incorporating and integrating those fragments. Integrating the fragments involves (i) deciding which open variables in which fragments actually represent the same variable, and (ii) for all the final variables, decide what order and scope of quantification that variable should have, and what type (universal or existential). That logical (CycL) query is then converted into a SPARQL query that is passed to the CCF SemanticDB that is its data lake.", "title": "Applications" }, { "paragraph_id": 30, "text": "One Cyc application aims to help students doing math at a 6th grade level, helping them much more deeply understand that subject matter. It is based on the experience that we often have thought we understood something, but only really understood it after we had to explain or teach it to someone else. Unlike almost all other educational software, where the computer plays the role of the teacher, this application of Cyc, called MathCraft, has Cyc play the role of a fellow student who is always slightly more confused than you, the user, are about the subject. The user's role is to observe the Cyc avatar and give it advice, correct its errors, mentor it, get it to see what it's doing wrong, etc. As the user gives good advice, Cyc allows the avatar to make fewer mistakes of that type, hence, from the user's point of view, it seems as though the user has just successfully taught it something. This is a variation of learning by teaching.", "title": "Applications" }, { "paragraph_id": 31, "text": "The Cyc project has been described as \"one of the most controversial endeavors of the artificial intelligence history\". Catherine Havasi, CEO of Luminoso, says that Cyc is the predecessor project to IBM's Watson. Machine-learning scientist Pedro Domingos refers to the project as a \"catastrophic failure\" for several reasons, including the unending amount of data required to produce any viable results and the inability for Cyc to evolve on its own.", "title": "Criticisms" }, { "paragraph_id": 32, "text": "Robin Hanson, a professor of economics at George Mason University, gives a more balanced analysis:", "title": "Criticisms" }, { "paragraph_id": 33, "text": "Of course the CYC project is open to criticism on its many particular choices. People have complained about its logic-like and language-like representations, about its selection of prototypical cases to build from (e.g., encyclopedia articles), about its focus on answering over acting, about how often it rebuilds vs. maintaining legacy systems, and about being private vs. publishing everything. But any large project like this would produce such disputes, and it is not obvious any of its choices have been seriously wrong. They had to start somewhere, and in my opinion they have now collected a knowledge base with a truly spectacular size, scope, and integration. Other architectures may well work better, but if knowing lots is anywhere near as important as Lenat thinks, I’d expect serious AI attempts to import CYC’s knowledge, translating it into a new representation. No other source has anywhere near CYC’s size, scope, and integration.", "title": "Criticisms" }, { "paragraph_id": 34, "text": "A similar sentiment was expressed by Marvin Minsky: \"Unfortunately, the strategies most popular among AI researchers in the 1980s have come to a dead end,\" said Minsky. So-called “expert systems,” which emulated human expertise within tightly defined subject areas like law and medicine, could match users’ queries to relevant diagnoses, papers and abstracts, yet they could not learn concepts that most children know by the time they are 3 years old. “For each different kind of problem,” said Minsky, “the construction of expert systems had to start all over again, because they didn’t accumulate common-sense knowledge.” Only one researcher has committed himself to the colossal task of building a comprehensive common-sense reasoning system, according to Minsky. Douglas Lenat, through his Cyc project, has directed the line-by-line entry of more than 1 million rules into a commonsense knowledge base.", "title": "Criticisms" }, { "paragraph_id": 35, "text": "Gary Marcus, a professor of psychology and neural science at New York University and the cofounder of an AI company called Geometric Intelligence, says \"it represents an approach that is very different from all the deep-learning stuff that has been in the news.” This is consistent with Doug Lenat's position that \"Sometimes the veneer of intelligence is not enough\".", "title": "Criticisms" }, { "paragraph_id": 36, "text": "Stephen Wolfram writes:", "title": "Criticisms" }, { "paragraph_id": 37, "text": "In the early days of the field of artificial intelligence, there were plenty of discussions of “knowledge representation”, with approaches based variously on the grammar of natural language, the structure of predicate logic or the formalism of databases. Very few large-scale projects were attempted (Doug Lenat’s Cyc being a notable counterexample).", "title": "Criticisms" }, { "paragraph_id": 38, "text": "Marcus writes:", "title": "Criticisms" }, { "paragraph_id": 39, "text": "The field might well benefit if CYC were systematically described and evaluated. If CYC has solved some significant fraction of commonsense reasoning, then it is critical to know that, both as a useful tool, and as a starting point for further research. If CYC has run into difficulties, it would be useful to learn from the mistakes that were made. If CYC is entirely useless, then researchers can at least stop worrying about whether they are reinventing the wheel.", "title": "Criticisms" }, { "paragraph_id": 40, "text": "Every few years since it began publishing (1993), there is a new Wired Magazine article about Cyc, some positive and some negative (including one issue which contained one of each).", "title": "Criticisms" }, { "paragraph_id": 41, "text": "This is a list of some of the notable people who work or have worked on Cyc either while it was a project at MCC (where Cyc was first started) or Cycorp.", "title": "Notable employees" } ]	Cyc is a long-term artificial intelligence project that aims to assemble a comprehensive ontology and knowledge base that spans the basic concepts and rules about how the world works. Hoping to capture common sense knowledge, Cyc focuses on implicit knowledge that other AI platforms may take for granted. This is contrasted with facts one might find somewhere on the internet or retrieve via a search engine or Wikipedia. Cyc enables semantic reasoners to perform human-like reasoning and be less "brittle" when confronted with novel situations. Douglas Lenat began the project in July 1984 at MCC, where he was Principal Scientist 1984–1994, and then, since January 1995, has been under active development by the Cycorp company, where he was the CEO.	2001-10-23T19:11:06Z	2023-12-18T01:35:38Z	[ "Template:Cite web", "Template:Cite book", "Template:Cite magazine", "Template:ISBN", "Template:Cite journal", "Template:IPAc-en", "Template:See also", "Template:Div col", "Template:Div col end", "Template:Harvnb", "Template:Refimprove", "Template:Infobox software", "Template:Respell", "Template:Blockquote", "Template:Reflist", "Template:Cite report", "Template:Cite news", "Template:Cite tech report", "Template:Other uses", "Template:Advert", "Template:IPA", "Template:Short description" ]	https://en.wikipedia.org/wiki/Cyc
6,876	CE	CE, Ce, ce, or variants may refer to:	[ { "paragraph_id": 0, "text": "CE, Ce, ce, or variants may refer to:", "title": "" } ]	CE, Ce, ce, or variants may refer to:	2001-10-24T02:38:05Z	2023-11-28T04:31:39Z	[ "Template:Lang-it", "Template:Lang-pt", "Template:Lang-ro", "Template:Lang-es", "Template:Disambiguation", "Template:Wiktionary", "Template:TOC right", "Template:Lang-fr" ]	https://en.wikipedia.org/wiki/CE
6,878	Carlos Valderrama	Carlos Alberto Valderrama Palacio (Colombian Spanish: [ˈkaɾlos alˈβeɾto βaldeˈrama paˈlasjo]; born 2 September 1961), also known as "El Pibe" ("The Kid"), is a Colombian former professional footballer and sports commentator for Fútbol de Primera, who played as an attacking midfielder. Valderrama is considered by many to be one of the greatest South American players in history and one of the best players of his era. In 2004, he was named by Pelé in the FIFA 100 list of the world's greatest living players. A creative playmaker, he is regarded as one of the best Colombian footballers of all time, and by some as Colombia's greatest player ever. His distinctive hairstyle, as well as his precise passing and technical skills made him one of South America's most recognisable footballers in the late 1980s and early 1990s. He won the South American Footballer of the Year award in 1987 and 1993, He is the fifth highest assister in the history of national teams and the twelfth overall, including clubs, and in 1999, he was also named one of the top 100 players of the 20th century by World Soccer. Valderrama was a member of the Colombia national football team from 1985 until 1998. He represented Colombia in 111 full internationals and scored 11 times, making him the second-most capped player in the country's history, behind only David Ospina. He played a major role during the golden era of Colombian football in the 1990s, representing his national side in three FIFA World Cups and five Copa América tournaments. After spending most of his career playing club football in South America and Europe, towards the end of his career Valderrama played in Major League Soccer, joining the league in its first season. One of the most recognisable players in the league at the time of its inception, he helped popularise the league during the second half of the 1990s. To this day, he is an icon and is considered one of the most decorated players to ever play in MLS; in 2005, he was named to the MLS All-Time Best XI. Born in Santa Marta, Colombia, Valderrama began his career at Unión Magdalena of the Colombian First Division in 1981. He also later played for Millonarios in 1984. He joined Deportivo Cali in 1985, where he played most of his Colombian football. In 1988, he moved to the French First Division side Montpellier. He struggled to adapt to the less technical and the faster, more physical, and tactical brand of football being played in Europe, losing his place in the squad. However, his passing ability later saw him become the club's main creative force, and he played a decisive role as his side won the Coupe de France in 1990. In 1991, he remained in Europe and joined Spanish side Real Valladolid for a season. He then returned to Colombia in 1992 and went on to play for Independiente Medellín, and subsequently Atlético Junior in 1993, with whom he won the Colombian championship in 1993 and 1995. Valderrama began his Major League Soccer career with the US side Tampa Bay Mutiny in the league's inaugural 1996 season. The team won the first ever Supporters' Shield, awarded for having the league's best regular season record, while Valderrama was the league's first Most Valuable Player, finishing the season with 4 goals and 17 assists. He remained with the club for the 1997 season, and also spent a spell on loan back at Deportivo Cali in Colombia, before moving to another MLS side, Miami Fusion, in 1998, where he also remained for two seasons. He returned to Tampa Bay in 2000, spending two more seasons with the club; while a member of the Mutiny, the team would sell Carlos Valderrama wigs at Tampa Stadium. In the 2000 MLS season, Valderrama recorded the only 20+ assist season in MLS history—ending the season with 26 — a single season assist record that remains intact to this day, and which MLS itself suggested was an "unbreakable" record in a 2012 article. In 2001, Valderrama joined the Colorado Rapids, and remained with the team until 2002, when he retired; his American soccer league career spanned a total of eight years, during which he made 175 appearances. In the MLS, Valderrama scored relatively few goals (16) for a midfielder, but is the league's fourth all-time leader in assists (114) after Brad Davis (123), Steve Ralston (135) – a former teammate, and Landon Donovan (145). In 2005, he was named to the MLS All-Time Best XI. Valderrama was a member of the Colombia national football team from 1985 until 1998; he made 111 international appearances, scoring 11 goals, making him the most capped outfield player in the country's history. He represented and captained his national side in the 1990, 1994, and 1998 FIFA World Cups, and also took part in the 1987, 1989, 1991, 1993, and 1995 Copa América tournaments. Valderrama made his international debut on 27 October 1985, in a 3–0 defeat to Paraguay in a 1986 World Cup qualifying match, at the age of 24. In his first major international tournament, he helped Colombia to a third-place finish at the 1987 Copa América in Argentina, as his team's captain, where he was named the tournament's best player; during the tournament he scored the opening goal in Colombia's 2–0 over Bolivia on 1 July, their first match of the group stage. Some of Valderrama's most impressive international performances came during the 1990 FIFA World Cup in Italy, during which he served as Colombia's captain. He helped his team to a 2–0 win against the UAE in Colombia's opening match of the group stage, scoring the second goal of the match with a strike from 20 yards. Colombia lost their second match against Yugoslavia, however, needing at least a draw against the eventual champions West Germany in their final group match in order to advance to the next round of the competition. In the decisive game, German striker Pierre Littbarski scored what appeared to be the winning goal in the 88th minute of the game; however, within the last minute of injury time, Valderrama beat several opposing players and made a crucial left-footed pass to Freddy Rincón, who subsequently equalised, sealing a place for Colombia in the second round of the tournament with a 1–1 draw. Colombia were eliminated in the round of 16, following a 2–1 extra time loss to Cameroon. On 5 September 1993, Valderrama contributed to Colombia's historic 5–0 victory over South American rivals Argentina at the Monumental in Buenos Aires, which allowed them to qualify for the 1994 World Cup. Although much was expected of Valderrama at the World Cup, an injury during a pre-tournament warm-up game put his place in the squad in jeopardy; although he was able to regain match fitness in time for the tournament, Colombia disappointed and suffered a first round elimination following defeats to Romania and the hosts USA. However, it is widely believed that internal problems and threats by drug cartel groups at the time contributed to the team's underwhelming results in the competition, in particular following the murder of Andrés Escobar after Colombia's 2–1 defeat to the host nation in the second group match; during the match, the Colombian defender had netted an own goal to open the scoring, which ultimately proved to be decisive, despite a 2–0 win over Switzerland in the final first round fixture. Four years later, Valderrama led his nation to qualify for the 1998 World Cup in France, scoring three goals during the qualifying stages. His impact in the final tournament at the advancing age of 37, however, was less decisive, and, despite defeating Tunisia, Colombia once again suffered a first round exit, following a 2–0 defeat against England, which was Valderrama's final international appearance. Although Valderrama is often defined as a 'classic number 10 playmaker', due to his creativity and offensive contribution, in reality he was not a classic playmaker in the traditional sense. Although he often wore the number 10 shirt throughout his career and was deployed as an attacking midfielder at times, he played mostly in deeper positions in the centre of the pitch – often operating in a free role as a deep-lying playmaker, rather than in more advanced midfield positions behind the forwards – in order to have a greater influence on the game. A team-player, Valderrama was also known to be an extremely selfless midfielder, who preferred assisting his teammates over going for goal himself; his tactical intelligence, positioning, reading of the game, efficient movement, and versatile range of passing enabled him to find space for himself to distribute and receive the ball, which allowed him both to set the tempo of his team in midfield with short, first time exchanges, or create chances with long lobbed passes or through balls. Valderrama's most instantly recognisable physical features were his big afro-blonde hairstyle, jewelry, and moustache, but he was best known for his grace and elegance on the ball, as well as his agility, and quick feet as a footballer. His control, dribbling ability and footwork were similar to those of smaller players, which for a player of Valderrama's size and physical build was fairly uncommon, and he frequently stood out throughout his career for his ability to use his strength, balance, composure, and flamboyant technique to shield the ball from opponents when put under pressure, and retain possession in difficult situations, often with elaborate skills, which made him an extremely popular figure with the fans. Valderrama's mix of physical strength, two-footed ability, unpredictability and flair enabled him to produce key and incisive performances against top-tier teams, while his world class vision and exceptional passing and crossing ability with his right foot made him one of the best assist providers of his time; his height, physique and elevation also made him effective in the air, and he was also an accurate free kick taker and striker of the ball, despite not being a particularly prolific goalscorer. Despite his natural talent and ability as a footballer, Valderrama earned a reputation for having a "languid" playing style, as well as lacking notable pace, being unfit, and for having a poor defensive work-rate on the pitch, in particular, after succumbing to the physical effects of ageing in his later career in the MLS. In his first season in France, he also initially struggled to adapt to the faster-paced, more physical and tactically rigorous European brand of football, which saw him play in an unfamiliar position, and gave him less space and time on the ball to dictate attacking passing moves; he was criticised at times for his lack of match fitness and his low defensive contribution, which initially limited his appearances with the club, although he later successfully became a key creative player in his team's starting line-up due to his discipline, skill, and his precise and efficient passing. Despite these claims, earlier in his career, however, Valderrama demonstrated substantial pace, stamina, and defensive competence. Former French defender Laurent Blanc, who played with Valderrama in Montpellier, described him thusly: "In the fast and furious European game he wasn't always at his ease. He was a natural exponent of 'toque', keeping the ball moving. But he was so gifted that we could give him the ball when we didn't know what else to do with it knowing he wouldn't lose it... and often he would do things that most of us only dream about." In February 2004, Valderrama ended his 22-year career in a tribute match at the Metropolitan stadium of Barranquilla, with some of the most important football players of South America, such as Diego Maradona, Enzo Francescoli, Iván Zamorano, and José Luis Chilavert. In 2006, a 22-foot bronze statue of Valderrama, created by Colombian artist Amilkar Ariza, was erected outside Estadio Eduardo Santos in Valderrama's birthplace of Santa Marta. Valderrama was the only Colombian to be featured by Pelé in FIFA's 125 Top Living Football Players list in March 2004. Valderrama appeared on the cover of Konami's International Superstar Soccer Pro 98. In the Nintendo 64 version of the game, he is referred to by his nickname, El Pibe. Valderrama has also appeared in EA Sports' FIFA football video game series; he was named one of the Ultimate Team Legend cards in FIFA 15. Besides his link to videogames, Valderrama has been present in sports media through his work with Fútbol de Primera, Andrés Cantor's radio station. He works as a color commentator during broadcasts of different matches, mostly participating during the FIFA World Cup, alongside play-by-play commentators like Sammy Sadovnik or Cantor himself. Since retiring from professional football, Valderrama has become assistant manager of Atlético Junior. On 1 November 2007, Valderrama accused a referee of corruption by waving cash in the face of Oscar Julian Ruiz when the official awarded a penalty to América de Cali. Junior lost the match 4–1, which ended the club's hopes of playoff qualification. He later also served as a coach for a football academy called Clearwater Galactics in Clearwater, Florida. Valderrama is married and has six children. Montpellier Atletico Junior Tampa Bay Mutiny Individual	[ { "paragraph_id": 0, "text": "Carlos Alberto Valderrama Palacio (Colombian Spanish: [ˈkaɾlos alˈβeɾto βaldeˈrama paˈlasjo]; born 2 September 1961), also known as \"El Pibe\" (\"The Kid\"), is a Colombian former professional footballer and sports commentator for Fútbol de Primera, who played as an attacking midfielder. Valderrama is considered by many to be one of the greatest South American players in history and one of the best players of his era. In 2004, he was named by Pelé in the FIFA 100 list of the world's greatest living players.", "title": "" }, { "paragraph_id": 1, "text": "A creative playmaker, he is regarded as one of the best Colombian footballers of all time, and by some as Colombia's greatest player ever. His distinctive hairstyle, as well as his precise passing and technical skills made him one of South America's most recognisable footballers in the late 1980s and early 1990s. He won the South American Footballer of the Year award in 1987 and 1993, He is the fifth highest assister in the history of national teams and the twelfth overall, including clubs, and in 1999, he was also named one of the top 100 players of the 20th century by World Soccer.", "title": "" }, { "paragraph_id": 2, "text": "Valderrama was a member of the Colombia national football team from 1985 until 1998. He represented Colombia in 111 full internationals and scored 11 times, making him the second-most capped player in the country's history, behind only David Ospina. He played a major role during the golden era of Colombian football in the 1990s, representing his national side in three FIFA World Cups and five Copa América tournaments.", "title": "" }, { "paragraph_id": 3, "text": "After spending most of his career playing club football in South America and Europe, towards the end of his career Valderrama played in Major League Soccer, joining the league in its first season. One of the most recognisable players in the league at the time of its inception, he helped popularise the league during the second half of the 1990s. To this day, he is an icon and is considered one of the most decorated players to ever play in MLS; in 2005, he was named to the MLS All-Time Best XI.", "title": "" }, { "paragraph_id": 4, "text": "Born in Santa Marta, Colombia, Valderrama began his career at Unión Magdalena of the Colombian First Division in 1981. He also later played for Millonarios in 1984. He joined Deportivo Cali in 1985, where he played most of his Colombian football. In 1988, he moved to the French First Division side Montpellier. He struggled to adapt to the less technical and the faster, more physical, and tactical brand of football being played in Europe, losing his place in the squad. However, his passing ability later saw him become the club's main creative force, and he played a decisive role as his side won the Coupe de France in 1990. In 1991, he remained in Europe and joined Spanish side Real Valladolid for a season. He then returned to Colombia in 1992 and went on to play for Independiente Medellín, and subsequently Atlético Junior in 1993, with whom he won the Colombian championship in 1993 and 1995.", "title": "Club career" }, { "paragraph_id": 5, "text": "Valderrama began his Major League Soccer career with the US side Tampa Bay Mutiny in the league's inaugural 1996 season. The team won the first ever Supporters' Shield, awarded for having the league's best regular season record, while Valderrama was the league's first Most Valuable Player, finishing the season with 4 goals and 17 assists. He remained with the club for the 1997 season, and also spent a spell on loan back at Deportivo Cali in Colombia, before moving to another MLS side, Miami Fusion, in 1998, where he also remained for two seasons. He returned to Tampa Bay in 2000, spending two more seasons with the club; while a member of the Mutiny, the team would sell Carlos Valderrama wigs at Tampa Stadium. In the 2000 MLS season, Valderrama recorded the only 20+ assist season in MLS history—ending the season with 26 — a single season assist record that remains intact to this day, and which MLS itself suggested was an \"unbreakable\" record in a 2012 article. In 2001, Valderrama joined the Colorado Rapids, and remained with the team until 2002, when he retired; his American soccer league career spanned a total of eight years, during which he made 175 appearances. In the MLS, Valderrama scored relatively few goals (16) for a midfielder, but is the league's fourth all-time leader in assists (114) after Brad Davis (123), Steve Ralston (135) – a former teammate, and Landon Donovan (145). In 2005, he was named to the MLS All-Time Best XI.", "title": "Club career" }, { "paragraph_id": 6, "text": "Valderrama was a member of the Colombia national football team from 1985 until 1998; he made 111 international appearances, scoring 11 goals, making him the most capped outfield player in the country's history. He represented and captained his national side in the 1990, 1994, and 1998 FIFA World Cups, and also took part in the 1987, 1989, 1991, 1993, and 1995 Copa América tournaments.", "title": "International career" }, { "paragraph_id": 7, "text": "Valderrama made his international debut on 27 October 1985, in a 3–0 defeat to Paraguay in a 1986 World Cup qualifying match, at the age of 24. In his first major international tournament, he helped Colombia to a third-place finish at the 1987 Copa América in Argentina, as his team's captain, where he was named the tournament's best player; during the tournament he scored the opening goal in Colombia's 2–0 over Bolivia on 1 July, their first match of the group stage.", "title": "International career" }, { "paragraph_id": 8, "text": "Some of Valderrama's most impressive international performances came during the 1990 FIFA World Cup in Italy, during which he served as Colombia's captain. He helped his team to a 2–0 win against the UAE in Colombia's opening match of the group stage, scoring the second goal of the match with a strike from 20 yards. Colombia lost their second match against Yugoslavia, however, needing at least a draw against the eventual champions West Germany in their final group match in order to advance to the next round of the competition. In the decisive game, German striker Pierre Littbarski scored what appeared to be the winning goal in the 88th minute of the game; however, within the last minute of injury time, Valderrama beat several opposing players and made a crucial left-footed pass to Freddy Rincón, who subsequently equalised, sealing a place for Colombia in the second round of the tournament with a 1–1 draw. Colombia were eliminated in the round of 16, following a 2–1 extra time loss to Cameroon.", "title": "International career" }, { "paragraph_id": 9, "text": "On 5 September 1993, Valderrama contributed to Colombia's historic 5–0 victory over South American rivals Argentina at the Monumental in Buenos Aires, which allowed them to qualify for the 1994 World Cup. Although much was expected of Valderrama at the World Cup, an injury during a pre-tournament warm-up game put his place in the squad in jeopardy; although he was able to regain match fitness in time for the tournament, Colombia disappointed and suffered a first round elimination following defeats to Romania and the hosts USA. However, it is widely believed that internal problems and threats by drug cartel groups at the time contributed to the team's underwhelming results in the competition, in particular following the murder of Andrés Escobar after Colombia's 2–1 defeat to the host nation in the second group match; during the match, the Colombian defender had netted an own goal to open the scoring, which ultimately proved to be decisive, despite a 2–0 win over Switzerland in the final first round fixture.", "title": "International career" }, { "paragraph_id": 10, "text": "Four years later, Valderrama led his nation to qualify for the 1998 World Cup in France, scoring three goals during the qualifying stages. His impact in the final tournament at the advancing age of 37, however, was less decisive, and, despite defeating Tunisia, Colombia once again suffered a first round exit, following a 2–0 defeat against England, which was Valderrama's final international appearance.", "title": "International career" }, { "paragraph_id": 11, "text": "Although Valderrama is often defined as a 'classic number 10 playmaker', due to his creativity and offensive contribution, in reality he was not a classic playmaker in the traditional sense. Although he often wore the number 10 shirt throughout his career and was deployed as an attacking midfielder at times, he played mostly in deeper positions in the centre of the pitch – often operating in a free role as a deep-lying playmaker, rather than in more advanced midfield positions behind the forwards – in order to have a greater influence on the game. A team-player, Valderrama was also known to be an extremely selfless midfielder, who preferred assisting his teammates over going for goal himself; his tactical intelligence, positioning, reading of the game, efficient movement, and versatile range of passing enabled him to find space for himself to distribute and receive the ball, which allowed him both to set the tempo of his team in midfield with short, first time exchanges, or create chances with long lobbed passes or through balls.", "title": "Playing style" }, { "paragraph_id": 12, "text": "Valderrama's most instantly recognisable physical features were his big afro-blonde hairstyle, jewelry, and moustache, but he was best known for his grace and elegance on the ball, as well as his agility, and quick feet as a footballer. His control, dribbling ability and footwork were similar to those of smaller players, which for a player of Valderrama's size and physical build was fairly uncommon, and he frequently stood out throughout his career for his ability to use his strength, balance, composure, and flamboyant technique to shield the ball from opponents when put under pressure, and retain possession in difficult situations, often with elaborate skills, which made him an extremely popular figure with the fans. Valderrama's mix of physical strength, two-footed ability, unpredictability and flair enabled him to produce key and incisive performances against top-tier teams, while his world class vision and exceptional passing and crossing ability with his right foot made him one of the best assist providers of his time; his height, physique and elevation also made him effective in the air, and he was also an accurate free kick taker and striker of the ball, despite not being a particularly prolific goalscorer.", "title": "Playing style" }, { "paragraph_id": 13, "text": "Despite his natural talent and ability as a footballer, Valderrama earned a reputation for having a \"languid\" playing style, as well as lacking notable pace, being unfit, and for having a poor defensive work-rate on the pitch, in particular, after succumbing to the physical effects of ageing in his later career in the MLS. In his first season in France, he also initially struggled to adapt to the faster-paced, more physical and tactically rigorous European brand of football, which saw him play in an unfamiliar position, and gave him less space and time on the ball to dictate attacking passing moves; he was criticised at times for his lack of match fitness and his low defensive contribution, which initially limited his appearances with the club, although he later successfully became a key creative player in his team's starting line-up due to his discipline, skill, and his precise and efficient passing. Despite these claims, earlier in his career, however, Valderrama demonstrated substantial pace, stamina, and defensive competence.", "title": "Playing style" }, { "paragraph_id": 14, "text": "Former French defender Laurent Blanc, who played with Valderrama in Montpellier, described him thusly: \"In the fast and furious European game he wasn't always at his ease. He was a natural exponent of 'toque', keeping the ball moving. But he was so gifted that we could give him the ball when we didn't know what else to do with it knowing he wouldn't lose it... and often he would do things that most of us only dream about.\"", "title": "Playing style" }, { "paragraph_id": 15, "text": "In February 2004, Valderrama ended his 22-year career in a tribute match at the Metropolitan stadium of Barranquilla, with some of the most important football players of South America, such as Diego Maradona, Enzo Francescoli, Iván Zamorano, and José Luis Chilavert.", "title": "Retirement and legacy" }, { "paragraph_id": 16, "text": "In 2006, a 22-foot bronze statue of Valderrama, created by Colombian artist Amilkar Ariza, was erected outside Estadio Eduardo Santos in Valderrama's birthplace of Santa Marta.", "title": "Retirement and legacy" }, { "paragraph_id": 17, "text": "Valderrama was the only Colombian to be featured by Pelé in FIFA's 125 Top Living Football Players list in March 2004.", "title": "Retirement and legacy" }, { "paragraph_id": 18, "text": "Valderrama appeared on the cover of Konami's International Superstar Soccer Pro 98. In the Nintendo 64 version of the game, he is referred to by his nickname, El Pibe.", "title": "Retirement and legacy" }, { "paragraph_id": 19, "text": "Valderrama has also appeared in EA Sports' FIFA football video game series; he was named one of the Ultimate Team Legend cards in FIFA 15.", "title": "Retirement and legacy" }, { "paragraph_id": 20, "text": "Besides his link to videogames, Valderrama has been present in sports media through his work with Fútbol de Primera, Andrés Cantor's radio station. He works as a color commentator during broadcasts of different matches, mostly participating during the FIFA World Cup, alongside play-by-play commentators like Sammy Sadovnik or Cantor himself.", "title": "Retirement and legacy" }, { "paragraph_id": 21, "text": "Since retiring from professional football, Valderrama has become assistant manager of Atlético Junior. On 1 November 2007, Valderrama accused a referee of corruption by waving cash in the face of Oscar Julian Ruiz when the official awarded a penalty to América de Cali. Junior lost the match 4–1, which ended the club's hopes of playoff qualification. He later also served as a coach for a football academy called Clearwater Galactics in Clearwater, Florida.", "title": "Coaching career" }, { "paragraph_id": 22, "text": "Valderrama is married and has six children.", "title": "Personal life" }, { "paragraph_id": 23, "text": "Montpellier", "title": "Honours" }, { "paragraph_id": 24, "text": "Atletico Junior", "title": "Honours" }, { "paragraph_id": 25, "text": "Tampa Bay Mutiny", "title": "Honours" }, { "paragraph_id": 26, "text": "Individual", "title": "Honours" } ]	Carlos Alberto Valderrama Palacio, also known as "El Pibe", is a Colombian former professional footballer and sports commentator for Fútbol de Primera, who played as an attacking midfielder. Valderrama is considered by many to be one of the greatest South American players in history and one of the best players of his era. In 2004, he was named by Pelé in the FIFA 100 list of the world's greatest living players. A creative playmaker, he is regarded as one of the best Colombian footballers of all time, and by some as Colombia's greatest player ever. His distinctive hairstyle, as well as his precise passing and technical skills made him one of South America's most recognisable footballers in the late 1980s and early 1990s. He won the South American Footballer of the Year award in 1987 and 1993, He is the fifth highest assister in the history of national teams and the twelfth overall, including clubs, and in 1999, he was also named one of the top 100 players of the 20th century by World Soccer. Valderrama was a member of the Colombia national football team from 1985 until 1998. He represented Colombia in 111 full internationals and scored 11 times, making him the second-most capped player in the country's history, behind only David Ospina. He played a major role during the golden era of Colombian football in the 1990s, representing his national side in three FIFA World Cups and five Copa América tournaments. After spending most of his career playing club football in South America and Europe, towards the end of his career Valderrama played in Major League Soccer, joining the league in its first season. One of the most recognisable players in the league at the time of its inception, he helped popularise the league during the second half of the 1990s. To this day, he is an icon and is considered one of the most decorated players to ever play in MLS; in 2005, he was named to the MLS All-Time Best XI.	2001-10-24T10:18:11Z	2023-12-28T02:18:53Z	[ "Template:Reflist", "Template:Webarchive", "Template:Commons category", "Template:S-sports", "Template:Navboxes", "Template:Authority control", "Template:Family name hatnote", "Template:IPA-es", "Template:Succession box", "Template:S-end", "Template:Short description", "Template:For", "Template:Infobox football biography", "Template:Cite web", "Template:Cite news", "Template:NFT", "Template:In lang", "Template:S-start", "Template:Use dmy dates", "Template:Fb", "Template:Cite book" ]	https://en.wikipedia.org/wiki/Carlos_Valderrama
6,880	Caesar salad	A Caesar salad (also spelled Cesar, César and Cesare) is a green salad of romaine lettuce and croutons dressed with lemon juice (or lime juice), olive oil, egg, Worcestershire sauce, anchovies, garlic, Dijon mustard, Parmesan cheese, and black pepper. In its original form, this salad was prepared and served tableside. The salad's creation is generally attributed to the restaurateur Caesar Cardini, an Italian immigrant who operated restaurants in Mexico and the United States. Cardini lived in San Diego but ran one of his restaurants in Tijuana to attract American customers seeking to circumvent the restrictions of Prohibition. His daughter, Rosa, recounted that her father invented the salad at the Tijuana restaurant when a Fourth of July rush in 1924 depleted the kitchen's supplies. Cardini made do with what he had, adding the dramatic flair of table-side tossing by the chef. Some recountings of the history state that Alex Cardini, Caesar Cardini's brother, made the salad, and that the salad was previously named the "Aviator Salad" because it was made for aviators who traveled over during Prohibition. A number of Cardini's staff have also said that they invented the dish. Julia Child said that she had eaten a Caesar salad at Cardini's restaurant in her youth during the 1920s. In 1946, the newspaper columnist Dorothy Kilgallen wrote of a Caesar containing anchovies, differing from Cardini's version: The big food rage in Hollywood—the Caesar salad—will be introduced to New Yorkers by Gilmore's Steak House. It's an intricate concoction that takes ages to prepare and contains (zowie!) lots of garlic, raw or slightly coddled eggs, croutons, romaine, anchovies, parmeasan [sic] cheese, olive oil, vinegar and plenty of black pepper. In a 1952 interview, Cardini said the salad became well known in 1937, when Manny Wolf, story editor and Paramount Pictures writer's department head, provided the recipe to Hollywood restaurants. In the 1970s, Cardini's daughter said that the original recipe included whole lettuce leaves, which were meant to be lifted by the stem and eaten with the fingers; coddled eggs; and garlic infused olive oil. The dressing is rarely uniformly made, and anchovy paste is sometimes added with Worcestershire sauce, dry mustard and garlic to enhance the flavor of the olive oil. Several sources have testified that the original recipe used only Worcestershire sauce without any anchovies, which Cardini considered too bold in flavor. Although the original recipe does not contain anchovies, modern recipes typically include anchovies as a key ingredient, which frequently is emulsified in bottled versions. Bottled Caesar dressings are now produced and marketed by many companies. The trademark brands, "Cardini's", "Caesar Cardini's" and "The Original Caesar Dressing" are all claimed to date to February 1950, although they were only registered decades later, and more than a dozen varieties of bottled Cardini's dressing are available today, with various ingredients. As the salad moved North to the U.S, a key ingredient changed within the recipe. Lemon juice is commonly used, despite the original Caesar salad opting for lime. Common ingredients in many recipes: Variations include varying the leaf, adding meat such as grilled chicken or bacon, or omitting ingredients such as anchovies and eggs. Vegan versions can replace anchovies with capers and the eggs with tahini. There is inherent risk of infection by salmonella bacteria occasionally found in raw egg from cracked or improperly handled eggshells where the protective cuticle is damaged. Updated recipes recommend eggs that are briefly heated to 160 °F (71 °C) or pasteurized eggs. Some variations of the dressing may use substitutions for egg.	[ { "paragraph_id": 0, "text": "A Caesar salad (also spelled Cesar, César and Cesare) is a green salad of romaine lettuce and croutons dressed with lemon juice (or lime juice), olive oil, egg, Worcestershire sauce, anchovies, garlic, Dijon mustard, Parmesan cheese, and black pepper.", "title": "" }, { "paragraph_id": 1, "text": "In its original form, this salad was prepared and served tableside.", "title": "" }, { "paragraph_id": 2, "text": "The salad's creation is generally attributed to the restaurateur Caesar Cardini, an Italian immigrant who operated restaurants in Mexico and the United States. Cardini lived in San Diego but ran one of his restaurants in Tijuana to attract American customers seeking to circumvent the restrictions of Prohibition. His daughter, Rosa, recounted that her father invented the salad at the Tijuana restaurant when a Fourth of July rush in 1924 depleted the kitchen's supplies. Cardini made do with what he had, adding the dramatic flair of table-side tossing by the chef. Some recountings of the history state that Alex Cardini, Caesar Cardini's brother, made the salad, and that the salad was previously named the \"Aviator Salad\" because it was made for aviators who traveled over during Prohibition. A number of Cardini's staff have also said that they invented the dish.", "title": "History" }, { "paragraph_id": 3, "text": "Julia Child said that she had eaten a Caesar salad at Cardini's restaurant in her youth during the 1920s. In 1946, the newspaper columnist Dorothy Kilgallen wrote of a Caesar containing anchovies, differing from Cardini's version:", "title": "History" }, { "paragraph_id": 4, "text": "The big food rage in Hollywood—the Caesar salad—will be introduced to New Yorkers by Gilmore's Steak House. It's an intricate concoction that takes ages to prepare and contains (zowie!) lots of garlic, raw or slightly coddled eggs, croutons, romaine, anchovies, parmeasan [sic] cheese, olive oil, vinegar and plenty of black pepper.", "title": "History" }, { "paragraph_id": 5, "text": "In a 1952 interview, Cardini said the salad became well known in 1937, when Manny Wolf, story editor and Paramount Pictures writer's department head, provided the recipe to Hollywood restaurants.", "title": "History" }, { "paragraph_id": 6, "text": "In the 1970s, Cardini's daughter said that the original recipe included whole lettuce leaves, which were meant to be lifted by the stem and eaten with the fingers; coddled eggs; and garlic infused olive oil. The dressing is rarely uniformly made, and anchovy paste is sometimes added with Worcestershire sauce, dry mustard and garlic to enhance the flavor of the olive oil. Several sources have testified that the original recipe used only Worcestershire sauce without any anchovies, which Cardini considered too bold in flavor.", "title": "History" }, { "paragraph_id": 7, "text": "Although the original recipe does not contain anchovies, modern recipes typically include anchovies as a key ingredient, which frequently is emulsified in bottled versions. Bottled Caesar dressings are now produced and marketed by many companies.", "title": "History" }, { "paragraph_id": 8, "text": "The trademark brands, \"Cardini's\", \"Caesar Cardini's\" and \"The Original Caesar Dressing\" are all claimed to date to February 1950, although they were only registered decades later, and more than a dozen varieties of bottled Cardini's dressing are available today, with various ingredients.", "title": "History" }, { "paragraph_id": 9, "text": "As the salad moved North to the U.S, a key ingredient changed within the recipe. Lemon juice is commonly used, despite the original Caesar salad opting for lime.", "title": "History" }, { "paragraph_id": 10, "text": "Common ingredients in many recipes:", "title": "Common ingredients" }, { "paragraph_id": 11, "text": "Variations include varying the leaf, adding meat such as grilled chicken or bacon, or omitting ingredients such as anchovies and eggs.", "title": "Common ingredients" }, { "paragraph_id": 12, "text": "Vegan versions can replace anchovies with capers and the eggs with tahini.", "title": "Common ingredients" }, { "paragraph_id": 13, "text": "There is inherent risk of infection by salmonella bacteria occasionally found in raw egg from cracked or improperly handled eggshells where the protective cuticle is damaged. Updated recipes recommend eggs that are briefly heated to 160 °F (71 °C) or pasteurized eggs. Some variations of the dressing may use substitutions for egg.", "title": "Health concerns" } ]	A Caesar salad is a green salad of romaine lettuce and croutons dressed with lemon juice, olive oil, egg, Worcestershire sauce, anchovies, garlic, Dijon mustard, Parmesan cheese, and black pepper. In its original form, this salad was prepared and served tableside.	2001-10-24T16:58:51Z	2023-12-23T20:20:18Z	[ "Template:Use dmy dates", "Template:Main", "Template:Reflist", "Template:Salads", "Template:Pp-vandalism", "Template:Sic", "Template:Cn", "Template:Cite book", "Template:Salad dressings", "Template:Short description", "Template:Portal", "Template:Cite news", "Template:Mexican cuisine", "Template:Infobox food", "Template:Cite web" ]	https://en.wikipedia.org/wiki/Caesar_salad
6,881	Cecilia Beaux	Eliza Cecilia Beaux (May 1, 1855 – September 17, 1942) was an American artist and the first woman to teach art at the Pennsylvania Academy of the Fine Arts. Known for her elegant and sensitive portraits of friends, relatives, and Gilded Age patrons, Beaux painted many famous subjects including First Lady Edith Roosevelt, Admiral Sir David Beatty and Georges Clemenceau. Beaux was trained in Philadelphia and went on to study in Paris where she was influenced by academic artists Tony Robert-Fleury and William-Adolphe Bouguereau as well as the work of Édouard Manet and Edgar Degas. Her style was compared to that of John Singer Sargent; at one exhibition, Bernard Berenson joked that her paintings were the best Sargents in the room. Like her instructor William Sartain, she believed there was a connection between physical characteristics and behavioral traits. Beaux was awarded a gold medal for lifetime achievement by the National Institute of Arts and Letters, and honored by Eleanor Roosevelt as "the American woman who had made the greatest contribution to the culture of the world". Beaux was born on May 1, 1855, in Philadelphia, the younger daughter of French silk manufacturer Jean Adolphe Beaux and teacher Cecilia Kent Leavitt. Her mother was the daughter of prominent businessman John Wheeler Leavitt of New York City and his wife, Cecilia Kent of Suffield, Connecticut. Cecilia Kent Leavitt died from puerperal fever 12 days after giving birth at age 33. Cecilia and her sister Etta were subsequently raised by their maternal grandmother and aunts, primarily in Philadelphia. Her father, unable to bear the grief of his loss, and feeling adrift in a foreign country, returned to his native France for 16 years, with only one visit back to Philadelphia. He returned when Cecilia was two, but left four years later after his business failed. As she confessed later, "We didn't love Papa very much, he was so foreign. We thought him peculiar." Her father did have a natural aptitude for drawing and the sisters were charmed by his whimsical sketches of animals. Later, Beaux would discover that her French heritage would serve her well during her pilgrimage and training in France. In Philadelphia, Beaux's aunt Emily married mining engineer William Foster Biddle, whom Beaux would later describe as "after my grandmother, the strongest and most beneficent influence in my life." For fifty years, he cared for his nieces-in-law with consistent attention and occasional financial support. Her grandmother, on the other hand, provided day-to-day supervision and kindly discipline. Whether with housework, handiwork, or academics, Grandma Leavitt offered a pragmatic framework, stressing that "everything undertaken must be completed, conquered." The Civil War years were particularly challenging, but the extended family survived despite little emotional or financial support from Beaux's father. After the war, Beaux began to spend some time in the household of "Willie" and Emily, both proficient musicians. Beaux learned to play the piano but preferred singing. The musical atmosphere later proved an advantage for her artistic ambitions. Beaux recalled, "They understood perfectly the spirit and necessities of an artist's life." In her early teens, she had her first major exposure to art during visits with Willie to the nearby Pennsylvania Academy of the Fine Arts, one of America's foremost art schools and museums. Though fascinated by the narrative elements of some of the pictures, particularly the Biblical themes of the massive paintings of Benjamin West, at this point Beaux had no aspirations of becoming an artist. Her childhood was a sheltered though generally happy one. As a teen she already manifested the traits, as she described, of "both a realist and a perfectionist, pursued by an uncompromising passion for carrying through." She attended the Misses Lyman School and was just an average student, though she did well in French and Natural History. However, she was unable to afford the extra fee for art lessons. At age 16, Beaux began art lessons with a relative, Catherine Ann Drinker, an accomplished artist who had her own studio and a growing clientele. Drinker became Beaux's role model, and she continued lessons with Drinker for a year. She then studied for two years with the painter Francis Adolf Van der Wielen, who offered lessons in perspective and drawing from casts during the time that the new Pennsylvania Academy of the Fine Arts was under construction. Given the bias of the Victorian age, female students were denied direct study in anatomy and could not attend drawing classes with live models (who were often prostitutes) until a decade later. At 18, Beaux was appointed as a drawing teacher at Miss Sanford's School, taking over Drinker's post. She also gave private art lessons and produced decorative art and small portraits. Her own studies were mostly self-directed. Beaux received her first introduction to lithography doing copy work for Philadelphia printer Thomas Sinclair and she published her first work in St. Nicholas magazine in December 1873. Beaux demonstrated accuracy and patience as a scientific illustrator, creating drawings of fossils for Edward Drinker Cope, for a multi-volume report sponsored by the U.S. Geological Survey. However, she did not find technical illustration suitable for a career (the extreme exactitude required gave her pains in the "solar plexus"). At this stage, she did not yet consider herself an artist. Beaux began attending the Pennsylvania Academy of the Fine Arts in Philadelphia in 1876, then under the dynamic influence of Thomas Eakins, whose work The Gross Clinic had "horrified Philadelphia Exhibition-goers as a gory spectacle" at the Centennial Exhibition of 1876. She steered clear of the controversial Eakins, though she much admired his work. His progressive teaching philosophy, focused on anatomy and live study and allowed the female students to partake in segregated studios, eventually led to his firing as director of the Academy. She did not ally herself with Eakins' ardent student supporters, and later wrote, "A curious instinct of self-preservation kept me outside the magic circle." Instead, she attended costume and portrait painting classes for three years taught by the ailing director Christian Schussele. Beaux won the Mary Smith Prize at the Pennsylvania Academy of the Fine Arts exhibitions in 1885, 1887, 1891, and 1892. After leaving the Academy, the 24-year-old Beaux decided to try her hand at porcelain painting and she enrolled in a course at the National Art Training School. She was well suited to the precise work but later wrote, "this was the lowest depth I ever reached in commercial art, and although it was a period when youth and romance were in their first attendance on me, I remember it with gloom and record it with shame." She studied privately with William Sartain, a friend of Eakins and a New York artist invited to Philadelphia to teach a group of art students, starting in 1881. Though Beaux admired Eakins more and thought his painting skill superior to Sartain's, she preferred the latter's gentle teaching style which promoted no particular aesthetic approach. Unlike Eakins, however, Sartain believed in phrenology and Beaux adopted a lifelong belief that physical characteristics correlated with behaviors and traits. Beaux attended Sartain's classes for two years, then rented her own studio and shared it with a group of women artists who hired a live model and continued without an instructor. After the group disbanded, Beaux set in earnest to prove her artistic abilities. She painted a large canvas in 1884, Les Derniers Jours d'Enfance, a portrait of her sister and nephew whose composition and style revealed a debt to James McNeill Whistler and whose subject matter was akin to Mary Cassatt's mother-and-child paintings. It was awarded a prize for the best painting by a female artist at the Academy, and further exhibited in Philadelphia and New York. Following that seminal painting, she painted over 50 portraits in the next three years with the zeal of a committed professional artist. Her invitation to serve as a juror on the hanging committee of the Academy confirmed her acceptance amongst her peers. In the mid-1880s, she was receiving commissions from notable Philadelphians and earning $500 per portrait, comparable to what Eakins commanded. When her friend Margaret Bush-Brown insisted that Les Derniers was good enough to be exhibited at the famed Paris Salon, Beaux relented and sent the painting abroad in the care of her friend, who managed to get the painting into the exhibition. At 32, despite her success in Philadelphia, Beaux decided that she still needed to advance her skills. She left for Paris with cousin May Whitlock, forsaking several suitors and overcoming the objections of her family. There she trained at the Académie Julian, the largest art school in Paris, and at the Académie Colarossi, receiving weekly critiques from established masters like Tony Robert-Fleury and William-Adolphe Bouguereau. She wrote, "Fleury is much less benign than Bouguereau and don't temper his severities…he hinted of possibilities before me and as he rose said the nicest thing of all, 'we will do all we can to help you'…I want these men…to know me and recognize that I can do something." Though advised regularly of Beaux's progress abroad and to "not be worried about any indiscretions of ours", her Aunt Eliza repeatedly reminded her niece to avoid the temptations of Paris, "Remember you are first of all a Christian – then a woman and last of all an Artist." When Beaux arrived in Paris, the Impressionists, a group of artists who had begun their own series of independent exhibitions from the official Salon in 1874, were beginning to lose their solidarity. Also known as the "Independents" or "Intransigents", the group which at times included Degas, Monet, Sisley, Caillebotte, Pissarro, Renoir, and Berthe Morisot, had been receiving the wrath of the critics for several years. Their art, though varying in style and technique, was the antithesis of the type of Academic art in which Beaux was trained and of which her teacher William-Adolphe Bouguereau was a leading master. In the summer of 1888, with classes in summer recess, Beaux worked in the fishing village of Concarneau with the American painters Alexander Harrison and Charles Lazar. She tried applying the plein-air painting techniques used by the Impressionists to her own landscapes and portraiture, with little success. Unlike her predecessor Mary Cassatt, who had arrived near the beginning of the Impressionist movement 15 years earlier and who had absorbed it, Beaux's artistic temperament, precise and true to observation, would not align with Impressionism and she remained a realist painter for the rest of her career, even as Cézanne, Matisse, Gauguin, and Picasso were beginning to take art into new directions. Beaux mostly admired classic artists like Titian and Rembrandt. Her European training did influence her palette, however, and she adopted more white and paler coloration in her oil painting, particularly in depicting female subjects, an approach favored by Sargent as well. Back in the United States in 1889, Beaux proceeded to paint portraits in the grand manner, taking as her subjects members of her sister's family and of Philadelphia's elite. In making her decision to devote herself to art, she also thought it was best not to marry, and in choosing male company she selected men who would not threaten to sidetrack her career. She resumed life with her family, and they supported her fully, acknowledging her chosen path and demanding of her little in the way of household responsibilities, "I was never once asked to do an errand in town, some bit of shopping…so well did they understand." She developed a structured, professional routine, arriving promptly at her studio, and expected the same from her models. The five years that followed were highly productive, resulting in over forty portraits. In 1890 she exhibited at the Paris Exposition, obtained in 1893 the gold medal of the Philadelphia Art Club, and also the Dodge prize at the New York National Academy of Design. She exhibited her work at the Palace of Fine Arts and The Woman's Building at the 1893 World's Columbian Exposition in Chicago, Illinois. Her portrait of The Reverend Matthew Blackburne Grier was particularly well-received, as was Sita and Sarita, a portrait of her cousin Charles W. Leavitt's wife Sarah (Allibone) Leavitt in white, with a small black cat perched on her shoulder, both gazing out mysteriously. The mesmerizing effect prompted one critic to point out "the witch-like weirdness of the black kitten" and for many years, the painting solicited questions by the press. But the result was not pre-planned, as Beaux's sister later explained, "Please make no mystery about it—it was only an idea to put the black kitten on her cousin's shoulder. Nothing deeper." Beaux donated Sita and Sarita to the Musée du Luxembourg, but only after making a copy for herself. Another highly regarded portrait from that period is New England Woman (1895), a nearly all-white oil painting which was purchased by the Pennsylvania Academy of the Fine Arts. In 1895, Beaux became the first woman to have a regular teaching position at the Pennsylvania Academy of the Fine Arts, where she instructed in portrait drawing and painting for the next twenty years. That rare type of achievement by a woman prompted one local newspaper to state, "It is a legitimate source of pride to Philadelphia that one of its most cherished institutions has made this innovation." She was a popular instructor. In 1896, Beaux returned to France to see a group of her paintings presented at the Salon. Influential French critic M. Henri Rochefort commented, "I am compelled to admit, not without some chagrin, that not one of our female artists…is strong enough to compete with the lady who has given us this year the portrait of Dr. Grier. Composition, flesh, texture, sound drawing—everything is there without affectation, and without seeking for effect." Cecilia Beaux considered herself a "New Woman", a 19th-century woman who explored educational and career opportunities that had generally been denied to women. In the late 19th century Charles Dana Gibson depicted the "New Woman" in his painting, The Reason Dinner was Late, which is "a sympathetic portrayal of artistic aspiration on the part of young women" as she paints a visiting policeman. This "New Woman" was successful, highly trained, and often did not marry; other such women included Ellen Day Hale, Mary Cassatt, Elizabeth Nourse and Elizabeth Coffin. Beaux was a member of Philadelphia's The Plastic Club. Other members included Elenore Abbott, Jessie Willcox Smith, Violet Oakley, Emily Sartain, and Elizabeth Shippen Green. Many of the women who founded the organization had been students of Howard Pyle. It was founded to provide a means to encourage one another professionally and create opportunities to sell their works of art. By 1900 the demand for Beaux's work brought clients from Washington, D.C., to Boston, prompting the artist to move to New York City, where she spent the winters, while summering at Green Alley, the home and studio she had built in Gloucester, Massachusetts. Beaux's friendship with Richard Gilder, editor-in-chief of the literary magazine The Century, helped promote her career and he introduced her to the elite of society. Among her portraits which followed from that association are those of Georges Clemenceau; First Lady Edith Roosevelt and her daughter; and Admiral Sir David Beatty. She also sketched President Teddy Roosevelt during her White House visits in 1902, during which "He sat for two hours, talking most of the time, reciting Kipling, and reading scraps of Browning." Beaux also became very close with Gilder's daughter Dorothea, and the two women exchanged affectionate letters for many years. Her portraits Fanny Travis Cochran, Dorothea and Francesca, and Ernesta and her Little Brother, are fine examples of her skill in painting children; Ernesta with Nurse, one of a series of essays in luminous white, was a highly original composition, seemingly without precedent. She became a member of the National Academy of Design in 1902. and won the Logan Medal of the arts at the Art Institute of Chicago in 1921. By 1906, Beaux began to live year-round at Green Alley, in a comfortable colony of "cottages" belonging to her wealthy friends and neighbors. All three aunts had died and she needed an emotional break from Philadelphia and New York City. She managed to find new subjects for portraiture, working in the mornings and enjoying a leisurely life the rest of the time. She carefully regulated her energy and her activities to maintain a productive output, and considered that a key to her success. On why so few women succeeded in art as she did, she stated, "Strength is the stumbling block. They (women) are sometimes unable to stand the hard work of it day in and day out. They become tired and cannot reenergize themselves." While Beaux stuck to her portraits of the elite, American art was advancing into urban and social subject matter, led by artists such as Robert Henri who espoused a totally different aesthetic, "Work with great speed..Have your energies alert, up and active. Do it all in one sitting if you can. In one minute if you can. There is no use delaying…Stop studying water pitchers and bananas and paint everyday life." He advised his students, among them Edward Hopper and Rockwell Kent, to live with the common man and paint the common man, in total opposition to Cecilia Beaux's artistic methods and subjects. The clash of Henri and William Merritt Chase (representing Beaux and the traditional art establishment) resulted in 1907 in the independent exhibition by the urban realists known as "The Eight" or the Ashcan School. Beaux and her art friends defended the old order, and many thought (and hoped) the new movement to be a passing fad, but it turned out to be a revolutionary turn in American art. In 1910, her beloved Uncle Willie died. Though devastated by the loss, at 55 year old, Beaux remained highly productive. In the next five years she painted almost 25 percent of her lifetime output and received a steady stream of honors. She had a major exhibition of 35 paintings at the Corcoran Gallery of Art in Washington, D.C., in 1912. Despite her continuing production and accolades, however, Beaux was working against the current of tastes and trends in art. The famed "Armory Show" of 1913 in New York City was a landmark presentation of 1,200 paintings showcasing Modernism. Beaux believed that the public, initially of mixed opinion about the "new" art, would ultimately reject it and return its favor to the Pre-Impressionists. Beaux was crippled after breaking her hip while walking in Paris in 1924. With her health impaired, her work output dwindled for the remainder of her life. That same year Beaux was asked to produce a self-portrait for the Medici collection in the Uffizi Gallery in Florence. In 1930 she published an autobiography, Background with Figures. Her later life was filled with honors. In 1930 she was elected a member of the National Institute of Arts and Letters; in 1933 came membership in the American Academy of Arts and Letters, which two years later organized the first major retrospective of her work. Also in 1933 Eleanor Roosevelt honored Beaux as "the American woman who had made the greatest contribution to the culture of the world". In 1942 The National Institute of Arts and Letters awarded her a gold medal for lifetime achievement. Beaux died at the age of 87 on September 17, 1942, in Gloucester, Massachusetts. She was buried at West Laurel Hill Cemetery in Bala Cynwyd, Pennsylvania. In her will she left a Duncan Phyfe rosewood secretaire made for her father to her cherished nephew Cecil Kent Drinker, a Harvard University physician who she had painted as a young boy. Beaux was included in the 2018 exhibit Women in Paris 1850-1900 at the Clark Art Institute. Though Beaux was an individualist, comparisons to Sargent would prove inevitable, and often favorable. Her strong technique, her perceptive reading of her subjects, and her ability to flatter without falsifying, were traits similar to his. "The critics are very enthusiastic. (Bernard) Berenson, Mrs. Coates tells me, stood in front of the portraits – Miss Beaux's three – and wagged his head. 'Ah, yes, I see!' Some Sargents. The ordinary ones are signed John Sargent, the best are signed Cecilia Beaux, which is, of course, nonsense in more ways than one, but it is part of the generous chorus of praise." Though overshadowed by Mary Cassatt and relatively unknown to museum-goers today, Beaux's craftsmanship and extraordinary output were highly regarded in her time. While presenting the Carnegie Institute's Gold Medal to Beaux in 1899, William Merritt Chase stated "Miss Beaux is not only the greatest living woman painter, but the best that has ever lived. Miss Beaux has done away entirely with sex [gender] in art." During her long productive life as an artist, she maintained her personal aesthetic and high standards against all distractions and countervailing forces. She constantly struggled for perfection. "A perfect technique in anything," she stated in an interview, "means that there has been no break in continuity between the conception and the act of performance." She summed up her driving work ethic, "I can say this: When I attempt anything, I have a passionate determination to overcome every obstacle…And I do my own work with a refusal to accept defeat that might almost be called painful."	[ { "paragraph_id": 0, "text": "Eliza Cecilia Beaux (May 1, 1855 – September 17, 1942) was an American artist and the first woman to teach art at the Pennsylvania Academy of the Fine Arts. Known for her elegant and sensitive portraits of friends, relatives, and Gilded Age patrons, Beaux painted many famous subjects including First Lady Edith Roosevelt, Admiral Sir David Beatty and Georges Clemenceau.", "title": "" }, { "paragraph_id": 1, "text": "Beaux was trained in Philadelphia and went on to study in Paris where she was influenced by academic artists Tony Robert-Fleury and William-Adolphe Bouguereau as well as the work of Édouard Manet and Edgar Degas. Her style was compared to that of John Singer Sargent; at one exhibition, Bernard Berenson joked that her paintings were the best Sargents in the room. Like her instructor William Sartain, she believed there was a connection between physical characteristics and behavioral traits.", "title": "" }, { "paragraph_id": 2, "text": "Beaux was awarded a gold medal for lifetime achievement by the National Institute of Arts and Letters, and honored by Eleanor Roosevelt as \"the American woman who had made the greatest contribution to the culture of the world\".", "title": "" }, { "paragraph_id": 3, "text": "Beaux was born on May 1, 1855, in Philadelphia, the younger daughter of French silk manufacturer Jean Adolphe Beaux and teacher Cecilia Kent Leavitt. Her mother was the daughter of prominent businessman John Wheeler Leavitt of New York City and his wife, Cecilia Kent of Suffield, Connecticut. Cecilia Kent Leavitt died from puerperal fever 12 days after giving birth at age 33.", "title": "Early life and education" }, { "paragraph_id": 4, "text": "Cecilia and her sister Etta were subsequently raised by their maternal grandmother and aunts, primarily in Philadelphia. Her father, unable to bear the grief of his loss, and feeling adrift in a foreign country, returned to his native France for 16 years, with only one visit back to Philadelphia. He returned when Cecilia was two, but left four years later after his business failed. As she confessed later, \"We didn't love Papa very much, he was so foreign. We thought him peculiar.\" Her father did have a natural aptitude for drawing and the sisters were charmed by his whimsical sketches of animals. Later, Beaux would discover that her French heritage would serve her well during her pilgrimage and training in France.", "title": "Early life and education" }, { "paragraph_id": 5, "text": "In Philadelphia, Beaux's aunt Emily married mining engineer William Foster Biddle, whom Beaux would later describe as \"after my grandmother, the strongest and most beneficent influence in my life.\" For fifty years, he cared for his nieces-in-law with consistent attention and occasional financial support. Her grandmother, on the other hand, provided day-to-day supervision and kindly discipline. Whether with housework, handiwork, or academics, Grandma Leavitt offered a pragmatic framework, stressing that \"everything undertaken must be completed, conquered.\" The Civil War years were particularly challenging, but the extended family survived despite little emotional or financial support from Beaux's father.", "title": "Early life and education" }, { "paragraph_id": 6, "text": "After the war, Beaux began to spend some time in the household of \"Willie\" and Emily, both proficient musicians. Beaux learned to play the piano but preferred singing. The musical atmosphere later proved an advantage for her artistic ambitions. Beaux recalled, \"They understood perfectly the spirit and necessities of an artist's life.\" In her early teens, she had her first major exposure to art during visits with Willie to the nearby Pennsylvania Academy of the Fine Arts, one of America's foremost art schools and museums. Though fascinated by the narrative elements of some of the pictures, particularly the Biblical themes of the massive paintings of Benjamin West, at this point Beaux had no aspirations of becoming an artist.", "title": "Early life and education" }, { "paragraph_id": 7, "text": "Her childhood was a sheltered though generally happy one. As a teen she already manifested the traits, as she described, of \"both a realist and a perfectionist, pursued by an uncompromising passion for carrying through.\" She attended the Misses Lyman School and was just an average student, though she did well in French and Natural History. However, she was unable to afford the extra fee for art lessons.", "title": "Early life and education" }, { "paragraph_id": 8, "text": "At age 16, Beaux began art lessons with a relative, Catherine Ann Drinker, an accomplished artist who had her own studio and a growing clientele. Drinker became Beaux's role model, and she continued lessons with Drinker for a year. She then studied for two years with the painter Francis Adolf Van der Wielen, who offered lessons in perspective and drawing from casts during the time that the new Pennsylvania Academy of the Fine Arts was under construction. Given the bias of the Victorian age, female students were denied direct study in anatomy and could not attend drawing classes with live models (who were often prostitutes) until a decade later.", "title": "Early life and education" }, { "paragraph_id": 9, "text": "At 18, Beaux was appointed as a drawing teacher at Miss Sanford's School, taking over Drinker's post. She also gave private art lessons and produced decorative art and small portraits. Her own studies were mostly self-directed. Beaux received her first introduction to lithography doing copy work for Philadelphia printer Thomas Sinclair and she published her first work in St. Nicholas magazine in December 1873. Beaux demonstrated accuracy and patience as a scientific illustrator, creating drawings of fossils for Edward Drinker Cope, for a multi-volume report sponsored by the U.S. Geological Survey. However, she did not find technical illustration suitable for a career (the extreme exactitude required gave her pains in the \"solar plexus\"). At this stage, she did not yet consider herself an artist.", "title": "Early life and education" }, { "paragraph_id": 10, "text": "Beaux began attending the Pennsylvania Academy of the Fine Arts in Philadelphia in 1876, then under the dynamic influence of Thomas Eakins, whose work The Gross Clinic had \"horrified Philadelphia Exhibition-goers as a gory spectacle\" at the Centennial Exhibition of 1876. She steered clear of the controversial Eakins, though she much admired his work. His progressive teaching philosophy, focused on anatomy and live study and allowed the female students to partake in segregated studios, eventually led to his firing as director of the Academy. She did not ally herself with Eakins' ardent student supporters, and later wrote, \"A curious instinct of self-preservation kept me outside the magic circle.\" Instead, she attended costume and portrait painting classes for three years taught by the ailing director Christian Schussele. Beaux won the Mary Smith Prize at the Pennsylvania Academy of the Fine Arts exhibitions in 1885, 1887, 1891, and 1892.", "title": "Early life and education" }, { "paragraph_id": 11, "text": "After leaving the Academy, the 24-year-old Beaux decided to try her hand at porcelain painting and she enrolled in a course at the National Art Training School. She was well suited to the precise work but later wrote, \"this was the lowest depth I ever reached in commercial art, and although it was a period when youth and romance were in their first attendance on me, I remember it with gloom and record it with shame.\" She studied privately with William Sartain, a friend of Eakins and a New York artist invited to Philadelphia to teach a group of art students, starting in 1881. Though Beaux admired Eakins more and thought his painting skill superior to Sartain's, she preferred the latter's gentle teaching style which promoted no particular aesthetic approach. Unlike Eakins, however, Sartain believed in phrenology and Beaux adopted a lifelong belief that physical characteristics correlated with behaviors and traits.", "title": "Early life and education" }, { "paragraph_id": 12, "text": "Beaux attended Sartain's classes for two years, then rented her own studio and shared it with a group of women artists who hired a live model and continued without an instructor. After the group disbanded, Beaux set in earnest to prove her artistic abilities. She painted a large canvas in 1884, Les Derniers Jours d'Enfance, a portrait of her sister and nephew whose composition and style revealed a debt to James McNeill Whistler and whose subject matter was akin to Mary Cassatt's mother-and-child paintings. It was awarded a prize for the best painting by a female artist at the Academy, and further exhibited in Philadelphia and New York. Following that seminal painting, she painted over 50 portraits in the next three years with the zeal of a committed professional artist. Her invitation to serve as a juror on the hanging committee of the Academy confirmed her acceptance amongst her peers. In the mid-1880s, she was receiving commissions from notable Philadelphians and earning $500 per portrait, comparable to what Eakins commanded. When her friend Margaret Bush-Brown insisted that Les Derniers was good enough to be exhibited at the famed Paris Salon, Beaux relented and sent the painting abroad in the care of her friend, who managed to get the painting into the exhibition.", "title": "Early life and education" }, { "paragraph_id": 13, "text": "At 32, despite her success in Philadelphia, Beaux decided that she still needed to advance her skills. She left for Paris with cousin May Whitlock, forsaking several suitors and overcoming the objections of her family. There she trained at the Académie Julian, the largest art school in Paris, and at the Académie Colarossi, receiving weekly critiques from established masters like Tony Robert-Fleury and William-Adolphe Bouguereau. She wrote, \"Fleury is much less benign than Bouguereau and don't temper his severities…he hinted of possibilities before me and as he rose said the nicest thing of all, 'we will do all we can to help you'…I want these men…to know me and recognize that I can do something.\" Though advised regularly of Beaux's progress abroad and to \"not be worried about any indiscretions of ours\", her Aunt Eliza repeatedly reminded her niece to avoid the temptations of Paris, \"Remember you are first of all a Christian – then a woman and last of all an Artist.\"", "title": "Early life and education" }, { "paragraph_id": 14, "text": "When Beaux arrived in Paris, the Impressionists, a group of artists who had begun their own series of independent exhibitions from the official Salon in 1874, were beginning to lose their solidarity. Also known as the \"Independents\" or \"Intransigents\", the group which at times included Degas, Monet, Sisley, Caillebotte, Pissarro, Renoir, and Berthe Morisot, had been receiving the wrath of the critics for several years. Their art, though varying in style and technique, was the antithesis of the type of Academic art in which Beaux was trained and of which her teacher William-Adolphe Bouguereau was a leading master. In the summer of 1888, with classes in summer recess, Beaux worked in the fishing village of Concarneau with the American painters Alexander Harrison and Charles Lazar. She tried applying the plein-air painting techniques used by the Impressionists to her own landscapes and portraiture, with little success. Unlike her predecessor Mary Cassatt, who had arrived near the beginning of the Impressionist movement 15 years earlier and who had absorbed it, Beaux's artistic temperament, precise and true to observation, would not align with Impressionism and she remained a realist painter for the rest of her career, even as Cézanne, Matisse, Gauguin, and Picasso were beginning to take art into new directions. Beaux mostly admired classic artists like Titian and Rembrandt. Her European training did influence her palette, however, and she adopted more white and paler coloration in her oil painting, particularly in depicting female subjects, an approach favored by Sargent as well.", "title": "Early life and education" }, { "paragraph_id": 15, "text": "Back in the United States in 1889, Beaux proceeded to paint portraits in the grand manner, taking as her subjects members of her sister's family and of Philadelphia's elite. In making her decision to devote herself to art, she also thought it was best not to marry, and in choosing male company she selected men who would not threaten to sidetrack her career. She resumed life with her family, and they supported her fully, acknowledging her chosen path and demanding of her little in the way of household responsibilities, \"I was never once asked to do an errand in town, some bit of shopping…so well did they understand.\" She developed a structured, professional routine, arriving promptly at her studio, and expected the same from her models.", "title": "Early life and education" }, { "paragraph_id": 16, "text": "The five years that followed were highly productive, resulting in over forty portraits. In 1890 she exhibited at the Paris Exposition, obtained in 1893 the gold medal of the Philadelphia Art Club, and also the Dodge prize at the New York National Academy of Design. She exhibited her work at the Palace of Fine Arts and The Woman's Building at the 1893 World's Columbian Exposition in Chicago, Illinois. Her portrait of The Reverend Matthew Blackburne Grier was particularly well-received, as was Sita and Sarita, a portrait of her cousin Charles W. Leavitt's wife Sarah (Allibone) Leavitt in white, with a small black cat perched on her shoulder, both gazing out mysteriously. The mesmerizing effect prompted one critic to point out \"the witch-like weirdness of the black kitten\" and for many years, the painting solicited questions by the press. But the result was not pre-planned, as Beaux's sister later explained, \"Please make no mystery about it—it was only an idea to put the black kitten on her cousin's shoulder. Nothing deeper.\" Beaux donated Sita and Sarita to the Musée du Luxembourg, but only after making a copy for herself. Another highly regarded portrait from that period is New England Woman (1895), a nearly all-white oil painting which was purchased by the Pennsylvania Academy of the Fine Arts.", "title": "Early life and education" }, { "paragraph_id": 17, "text": "In 1895, Beaux became the first woman to have a regular teaching position at the Pennsylvania Academy of the Fine Arts, where she instructed in portrait drawing and painting for the next twenty years. That rare type of achievement by a woman prompted one local newspaper to state, \"It is a legitimate source of pride to Philadelphia that one of its most cherished institutions has made this innovation.\" She was a popular instructor. In 1896, Beaux returned to France to see a group of her paintings presented at the Salon. Influential French critic M. Henri Rochefort commented, \"I am compelled to admit, not without some chagrin, that not one of our female artists…is strong enough to compete with the lady who has given us this year the portrait of Dr. Grier. Composition, flesh, texture, sound drawing—everything is there without affectation, and without seeking for effect.\"", "title": "Early life and education" }, { "paragraph_id": 18, "text": "Cecilia Beaux considered herself a \"New Woman\", a 19th-century woman who explored educational and career opportunities that had generally been denied to women. In the late 19th century Charles Dana Gibson depicted the \"New Woman\" in his painting, The Reason Dinner was Late, which is \"a sympathetic portrayal of artistic aspiration on the part of young women\" as she paints a visiting policeman. This \"New Woman\" was successful, highly trained, and often did not marry; other such women included Ellen Day Hale, Mary Cassatt, Elizabeth Nourse and Elizabeth Coffin.", "title": "Early life and education" }, { "paragraph_id": 19, "text": "Beaux was a member of Philadelphia's The Plastic Club. Other members included Elenore Abbott, Jessie Willcox Smith, Violet Oakley, Emily Sartain, and Elizabeth Shippen Green. Many of the women who founded the organization had been students of Howard Pyle. It was founded to provide a means to encourage one another professionally and create opportunities to sell their works of art.", "title": "Early life and education" }, { "paragraph_id": 20, "text": "By 1900 the demand for Beaux's work brought clients from Washington, D.C., to Boston, prompting the artist to move to New York City, where she spent the winters, while summering at Green Alley, the home and studio she had built in Gloucester, Massachusetts. Beaux's friendship with Richard Gilder, editor-in-chief of the literary magazine The Century, helped promote her career and he introduced her to the elite of society. Among her portraits which followed from that association are those of Georges Clemenceau; First Lady Edith Roosevelt and her daughter; and Admiral Sir David Beatty. She also sketched President Teddy Roosevelt during her White House visits in 1902, during which \"He sat for two hours, talking most of the time, reciting Kipling, and reading scraps of Browning.\" Beaux also became very close with Gilder's daughter Dorothea, and the two women exchanged affectionate letters for many years. Her portraits Fanny Travis Cochran, Dorothea and Francesca, and Ernesta and her Little Brother, are fine examples of her skill in painting children; Ernesta with Nurse, one of a series of essays in luminous white, was a highly original composition, seemingly without precedent. She became a member of the National Academy of Design in 1902. and won the Logan Medal of the arts at the Art Institute of Chicago in 1921.", "title": "Early life and education" }, { "paragraph_id": 21, "text": "By 1906, Beaux began to live year-round at Green Alley, in a comfortable colony of \"cottages\" belonging to her wealthy friends and neighbors. All three aunts had died and she needed an emotional break from Philadelphia and New York City. She managed to find new subjects for portraiture, working in the mornings and enjoying a leisurely life the rest of the time. She carefully regulated her energy and her activities to maintain a productive output, and considered that a key to her success. On why so few women succeeded in art as she did, she stated, \"Strength is the stumbling block. They (women) are sometimes unable to stand the hard work of it day in and day out. They become tired and cannot reenergize themselves.\"", "title": "Early life and education" }, { "paragraph_id": 22, "text": "While Beaux stuck to her portraits of the elite, American art was advancing into urban and social subject matter, led by artists such as Robert Henri who espoused a totally different aesthetic, \"Work with great speed..Have your energies alert, up and active. Do it all in one sitting if you can. In one minute if you can. There is no use delaying…Stop studying water pitchers and bananas and paint everyday life.\" He advised his students, among them Edward Hopper and Rockwell Kent, to live with the common man and paint the common man, in total opposition to Cecilia Beaux's artistic methods and subjects. The clash of Henri and William Merritt Chase (representing Beaux and the traditional art establishment) resulted in 1907 in the independent exhibition by the urban realists known as \"The Eight\" or the Ashcan School. Beaux and her art friends defended the old order, and many thought (and hoped) the new movement to be a passing fad, but it turned out to be a revolutionary turn in American art.", "title": "Early life and education" }, { "paragraph_id": 23, "text": "In 1910, her beloved Uncle Willie died. Though devastated by the loss, at 55 year old, Beaux remained highly productive. In the next five years she painted almost 25 percent of her lifetime output and received a steady stream of honors. She had a major exhibition of 35 paintings at the Corcoran Gallery of Art in Washington, D.C., in 1912. Despite her continuing production and accolades, however, Beaux was working against the current of tastes and trends in art. The famed \"Armory Show\" of 1913 in New York City was a landmark presentation of 1,200 paintings showcasing Modernism. Beaux believed that the public, initially of mixed opinion about the \"new\" art, would ultimately reject it and return its favor to the Pre-Impressionists.", "title": "Early life and education" }, { "paragraph_id": 24, "text": "Beaux was crippled after breaking her hip while walking in Paris in 1924. With her health impaired, her work output dwindled for the remainder of her life. That same year Beaux was asked to produce a self-portrait for the Medici collection in the Uffizi Gallery in Florence. In 1930 she published an autobiography, Background with Figures. Her later life was filled with honors. In 1930 she was elected a member of the National Institute of Arts and Letters; in 1933 came membership in the American Academy of Arts and Letters, which two years later organized the first major retrospective of her work. Also in 1933 Eleanor Roosevelt honored Beaux as \"the American woman who had made the greatest contribution to the culture of the world\". In 1942 The National Institute of Arts and Letters awarded her a gold medal for lifetime achievement.", "title": "Early life and education" }, { "paragraph_id": 25, "text": "Beaux died at the age of 87 on September 17, 1942, in Gloucester, Massachusetts. She was buried at West Laurel Hill Cemetery in Bala Cynwyd, Pennsylvania. In her will she left a Duncan Phyfe rosewood secretaire made for her father to her cherished nephew Cecil Kent Drinker, a Harvard University physician who she had painted as a young boy.", "title": "Death" }, { "paragraph_id": 26, "text": "Beaux was included in the 2018 exhibit Women in Paris 1850-1900 at the Clark Art Institute.", "title": "Legacy" }, { "paragraph_id": 27, "text": "Though Beaux was an individualist, comparisons to Sargent would prove inevitable, and often favorable. Her strong technique, her perceptive reading of her subjects, and her ability to flatter without falsifying, were traits similar to his. \"The critics are very enthusiastic. (Bernard) Berenson, Mrs. Coates tells me, stood in front of the portraits – Miss Beaux's three – and wagged his head. 'Ah, yes, I see!' Some Sargents. The ordinary ones are signed John Sargent, the best are signed Cecilia Beaux, which is, of course, nonsense in more ways than one, but it is part of the generous chorus of praise.\" Though overshadowed by Mary Cassatt and relatively unknown to museum-goers today, Beaux's craftsmanship and extraordinary output were highly regarded in her time. While presenting the Carnegie Institute's Gold Medal to Beaux in 1899, William Merritt Chase stated \"Miss Beaux is not only the greatest living woman painter, but the best that has ever lived. Miss Beaux has done away entirely with sex [gender] in art.\"", "title": "Legacy" }, { "paragraph_id": 28, "text": "During her long productive life as an artist, she maintained her personal aesthetic and high standards against all distractions and countervailing forces. She constantly struggled for perfection. \"A perfect technique in anything,\" she stated in an interview, \"means that there has been no break in continuity between the conception and the act of performance.\" She summed up her driving work ethic, \"I can say this: When I attempt anything, I have a passionate determination to overcome every obstacle…And I do my own work with a refusal to accept defeat that might almost be called painful.\"", "title": "Legacy" } ]	Eliza Cecilia Beaux was an American artist and the first woman to teach art at the Pennsylvania Academy of the Fine Arts. Known for her elegant and sensitive portraits of friends, relatives, and Gilded Age patrons, Beaux painted many famous subjects including First Lady Edith Roosevelt, Admiral Sir David Beatty and Georges Clemenceau. Beaux was trained in Philadelphia and went on to study in Paris where she was influenced by academic artists Tony Robert-Fleury and William-Adolphe Bouguereau as well as the work of Édouard Manet and Edgar Degas. Her style was compared to that of John Singer Sargent; at one exhibition, Bernard Berenson joked that her paintings were the best Sargents in the room. Like her instructor William Sartain, she believed there was a connection between physical characteristics and behavioral traits. Beaux was awarded a gold medal for lifetime achievement by the National Institute of Arts and Letters, and honored by Eleanor Roosevelt as "the American woman who had made the greatest contribution to the culture of the world".	2001-10-24T17:52:29Z	2023-12-16T19:15:37Z	[ "Template:Webarchive", "Template:Cite news", "Template:EB1911", "Template:Authority control", "Template:Short description", "Template:Infobox artist", "Template:Circa", "Template:Cite web", "Template:Commons category", "Template:NIE Poster", "Template:New Woman (late 19th century)", "Template:Sfn", "Template:ISBN", "Template:Citation", "Template:Use mdy dates", "Template:Reflist", "Template:Cite book" ]	https://en.wikipedia.org/wiki/Cecilia_Beaux
6,882	Chrysler	FCA US, LLC, doing business as Stellantis North America and formerly Chrysler Corporation (/ˈkraɪslər/ KRY-slər), is one of the "Detroit Three" automobile manufacturers in the United States, headquartered in Auburn Hills, Michigan. It is the American subsidiary of the multinational automotive company Stellantis. Stellantis North America sells vehicles worldwide under the Chrysler, Dodge, Jeep, and Ram nameplates. It also includes Mopar, its automotive parts and accessories division, and SRT, its performance automobile division. The division also distributes Alfa Romeo, Fiat and Maserati vehicles in North America. The original Chrysler Corporation was founded in 1925 by Walter Chrysler from the remains of the Maxwell Motor Company. It was acquired by Daimler-Benz, which in 1998 renamed itself DaimlerChrysler. After Daimler divested from Chrysler in 2007, the company operated as Chrysler LLC (2007–2009), and Chrysler Group LLC (2009–2014) before being acquired by Fiat S.p.A. and becoming a subsidiary of the newly formed Fiat Chrysler Automobiles ("FCA") in 2014. Chrysler in 2021 is a subsidiary of Stellantis, the company formed from the merger between FCA and PSA Group (Peugeot Société Anonyme) in 2021. After founding the company, Walter Chrysler used the General Motors brand diversification and hierarchy strategy that he had become familiar with when he worked in the Buick division at General Motors. He then acquired Fargo Trucks and the Dodge Brothers Company, and created the Plymouth and DeSoto brands in 1928. Facing postwar declines in market share, productivity, and profitability, as GM and Ford were growing, Chrysler borrowed $250 million in 1954 from Prudential Insurance to pay for expansion and updated car designs. Chrysler expanded into Europe by taking control of French, British, and Spanish auto companies in the 1960s; Chrysler Europe was sold in 1978 to PSA Peugeot Citroën for $1 billion. The company struggled to adapt to changing markets, increased U.S. import competition, and safety and environmental regulation in the 1970s. It began an engineering partnership with Mitsubishi Motors, and began selling Mitsubishi vehicles branded as Dodge and Plymouth in North America. On the verge of bankruptcy in the late 1970s, it was saved by $1.5 billion in loan guarantees from the U.S. government. New CEO Lee Iacocca was credited with returning the company to profitability in the 1980s. In 1985, Diamond-Star Motors was created, further expanding the Chrysler-Mitsubishi relationship. In 1987, Chrysler acquired American Motors Corporation (AMC), which brought the profitable Jeep, as well as the newly formed Eagle, brands under the Chrysler umbrella. In 1998, Chrysler merged with German automaker Daimler-Benz to form DaimlerChrysler AG; the merger proved contentious with investors. As a result, Chrysler was sold to Cerberus Capital Management and renamed Chrysler LLC in 2007. Like the other Big Three automobile manufacturers, Chrysler was impacted by the automotive industry crisis of 2008–2010. The company remained in business through a combination of negotiations with creditors, filing for Chapter 11 bankruptcy reorganization on April 30, 2009, and participating in a bailout from the U.S. government through the Troubled Asset Relief Program. On June 10, 2009, Chrysler emerged from the bankruptcy proceedings with the United Auto Workers pension fund, Fiat S.p.A., and the U.S. and Canadian governments as principal owners. The bankruptcy resulted in Chrysler defaulting on over $4 billion in debts. In May 2011, Chrysler finished repaying its obligations to the U.S. government five years early, although the cost to the American taxpayer was $1.3 billion. Over the next few years, Fiat S.p.A. gradually acquired the other parties' shares. In January 2014, Fiat acquired the rest of Chrysler from the United Auto Workers retiree health trust, making Chrysler Group a subsidiary of Fiat S.p.A. In May 2014, Fiat Chrysler Automobiles was established by merging Fiat S.p.A. into the company. Chrysler Group LLC remained a subsidiary until December 15, 2014, when it was renamed FCA US LLC, to reflect the Fiat-Chrysler merger. The Chrysler company was founded by Walter Chrysler on June 6, 1925, when the Maxwell Motor Company (est. 1904) was re-organized into the Chrysler Corporation. The company was headquartered in the Detroit enclave of Highland Park, where it remained until completing the move to its present Auburn Hills location in 1996. Chrysler had arrived at the ailing Maxwell-Chalmers company in the early 1920s, hired to overhaul the company's troubled operations (after a similar rescue job at the Willys-Overland car company). In late 1923, production of the Chalmers automobile was ended. In January 1924, Walter Chrysler launched the well-received Chrysler automobile. The Chrysler Six was designed to provide customers with an advanced, well-engineered car, at an affordable price. Elements of this car are traceable to a prototype which had been under development at Willys during Chrysler's tenure The original 1924 Chrysler included a carburetor air filter, high compression engine, full pressure lubrication, and an oil filter, features absent from most autos at the time. Among the innovations in its early years were the first practical mass-produced four-wheel hydraulic brakes, a system nearly completely engineered by Chrysler with patents assigned to Lockheed, and rubber engine mounts, called "Floating Power" to reduce vibration. Chrysler also developed a wheel with a ridged rim, designed to keep a deflated tire from flying off the wheel. This wheel was eventually adopted by the auto industry worldwide. The Maxwell brand was dropped after the 1925 model year, with the new, lower-priced four-cylinder Chryslers introduced for the 1926 year being badge-engineered Maxwells. The advanced engineering and testing that went into Chrysler Corporation cars helped to push the company to the second-place position in U.S. sales by 1936, which it held until 1949. In 1928, the Chrysler Corporation began dividing its vehicle offerings by price class and function. The Plymouth brand was introduced at the low-priced end of the market (created essentially by once again reworking and rebadging the Chrysler Series 50 four-cylinder model). At the same time, the DeSoto brand was introduced in the medium-price field. Also in 1928, Chrysler bought the Dodge Brothers automobile and truck company and continued the successful Dodge line of automobiles and Fargo range of trucks. By the mid-1930s, the DeSoto and Dodge divisions would trade places in the corporate hierarchy. The Imperial name had been used since 1926 but was never a separate make, just the top-of-the-line Chrysler. However, in 1955, the company decided to offer it as its own make/brand and division to better compete with its rivals, Lincoln and Cadillac. This addition changed the company's traditional four-make lineup to five (in order of price from bottom to top): Plymouth, Dodge, DeSoto, Chrysler, and the now-separate Imperial. In 1954, Chrysler was the exclusive provider of its Hemi engine in the Facel Vega, a Paris coachbuilder that offered their own line of hand-built luxury performance cars, with the PowerFlite and TorqueFlite transmissions offered. The Facel Vega Excellence was a four-door hardtop with rear-hinged coach doors that listed for US$12,800 ($129,831 in 2022 dollars ). On April 28, 1955, Chrysler and Philco announced the development and production of the World's First All-Transistor car radio. The all-transistor car radio, Mopar model 914HR, developed and produced by Chrysler and Philco, was a $150 option on the 1956 Imperial automobile models. Philco began manufacturing this radio in the fall of 1955 at its Sandusky Ohio plant. On September 28, 1957, Chrysler announced the first production electronic fuel injection (EFI), as an option on some of its new 1958 car models (Chrysler 300D, Dodge D500, DeSoto Adventurer, Plymouth Fury). The first attempt to use this system was by American Motors on the 1957 Rambler Rebel. Bendix Corporation's Electrojector used a transistor computer brain modulator box, but teething problems on pre-production cars meant very few cars were made. The EFI system in the Rambler ran fine in warm weather, but suffered hard starting in cooler temperatures and AMC decided not to use this EFI system on its 1957 Rambler Rebel production cars that were sold to the public. Chrysler also used the Bendix "Electrojector" fuel injection system and only around 35 vehicles were built with this option, on its 1958 production-built car models. Owners of EFI Chryslers were so dissatisfied that all but one were retrofitted with carburetors (while that one has been completely restored, with original EFI electronic problems resolved). The Valiant was also introduced for the 1960 model year as a distinct brand. In the U.S. market, Valiant was made a model in the Plymouth line for 1961 and the DeSoto make was discontinued in 1961. With those exceptions per applicable year and market, Chrysler's range from lowest to highest price from the 1940s through the 1970s was Valiant, Plymouth, Dodge, DeSoto, Chrysler, and Imperial. From 1963 through 1969, Chrysler increased its existing stakes to take full control of the French Simca, British Rootes, and Spanish Barreiros companies, merging them into Chrysler Europe in 1967. In the 1970s, an engineering partnership was established with Mitsubishi Motors, and Chrysler began selling Mitsubishi vehicles branded as Dodge and Plymouth in North America. Chrysler struggled to adapt to the changing environment of the 1970s. When consumer tastes shifted to smaller cars in the early 1970s, particularly after the 1973 oil crisis, Chrysler could not meet the demand, although their compact models on the "A" body platform, the Dodge Dart and Plymouth Valiant, had proven economy and reliability and sold very well. Additional burdens came from increased US import competition, and tougher government regulation of car safety, fuel economy, and emissions. As the smallest of the Big 3 US automakers, Chrysler lacked the financial resources to meet all of these challenges. In 1976, with the demise of the reliable Dart/Valiant, quality control declined. Their replacements, the Dodge Aspen and Plymouth Volare, were comfortable and had good roadability, but owners soon experienced major reliability problems which crept into other models as well. Engines failed and/or did not run well, and premature rust plagued bodies. In 1978, Lee Iacocca was brought in to turn the company around, and in 1979 Iacocca sought US government help. Congress later passed the Loan Guarantee Act providing $1.5 billion in loan guarantees. The Loan Guarantee Act required that Chrysler also obtain $2 billion in concessions or aid from sources outside the federal government, which included interest rate reductions for $650 million of the savings, asset sales of $300 million, local and state tax concessions of $250 million, and wage reductions of about $590 million along with a $50 million stock offering. $180 million was to come from concessions from dealers and suppliers. Also in 1978, Iacocca offloaded the ailing European operation to PSA Peugeot Citroën for a nominal $1, taking with it the group's substantial losses and debts which had been dragging the rest of the business down. After a period of plant closures and salary cuts agreed to by both management and the auto unions, the loans were repaid with interest in 1983. In November 1983, the Dodge Caravan/Plymouth Voyager was introduced, establishing the minivan as a major category, and initiating Chrysler's return to stability. In 1985, Diamond-Star Motors was created, further expanding the Chrysler-Mitsubishi relationship. In 1987, Chrysler acquired American Motors Corporation (AMC), which brought the profitable Jeep brand under the Chrysler umbrella. In 1985, Chrysler entered an agreement with AMC to produce Chrysler M platform rear-drive, as well as Dodge Omnis front wheel drive cars, in AMC's Kenosha, Wisconsin, plant. In 1987, Chrysler acquired the 47% ownership of AMC that was held by Renault. The remaining outstanding shares of AMC were bought on the NYSE by August 5, 1987, making the deal valued somewhere between US$1.7 billion and US$2 billion, depending on how costs were counted. Chrysler CEO Lee Iacocca wanted the Jeep brand, particularly the Jeep Grand Cherokee (ZJ) that was under development, the new world-class manufacturing plant in Bramalea, Ontario, and AMC's engineering and management talent that became critical for Chrysler's future success. Chrysler established the Jeep/Eagle division as a "specialty" arm to market products distinctly different from the K-car-based products with the Eagle cars targeting import buyers. Former AMC dealers sold Jeep vehicles and various new Eagle models, as well as Chrysler products, strengthening the automaker's retail distribution system. Eurostar, a joint venture between Chrysler and Steyr-Daimler-Puch, began producing the Chrysler Voyager in Austria for European markets in 1992. In 1998, Chrysler and its subsidiaries entered into a partnership dubbed a "merger of equals" with German-based Daimler-Benz AG, creating the combined entity DaimlerChrysler AG. To the surprise of many stockholders, Daimler acquired Chrysler in a stock swap before Chrysler CEO Bob Eaton retired. Under DaimlerChrysler, the company was named DaimlerChrysler Motors Company LLC, with its U.S. operations generally called "DCX". The Eagle brand was retired soon after Chrysler's merger with Daimler-Benz in 1998 Jeep became a stand-alone division, and efforts were made to merge the Chrysler and Jeep brands as one sales unit. In 2001, the Plymouth brand was also discontinued. Eurostar also built the Chrysler PT Cruiser in 2001 and 2002. The Austrian venture was sold to Magna International in 2002 and became Magna Steyr. The Voyager continued in production until 2007, whereas the Chrysler 300C, Jeep Grand Cherokee, and Jeep Commander were also built at the plant from 2005 until 2010. On May 14, 2007, DaimlerChrysler announced the sale of 80.1% of Chrysler Group to American private equity firm Cerberus Capital Management, L.P., thereafter known as Chrysler LLC, although Daimler (renamed as Daimler AG) continued to hold a 19.9% stake. The economic collapse during the Financial crisis of 2007–2008 pushed the company to the brink. On April 30, 2009, the automaker filed for Chapter 11 bankruptcy protection to be able to operate as a going concern, while renegotiating its debt structure and other obligations, which resulted in the corporation defaulting on over $4 billion in secured debts. The U.S. government described the company's action as a "prepackaged surgical bankruptcy". On June 10, 2009, substantially all of Chrysler's assets were sold to "New Chrysler", organized as Chrysler Group LLC. The federal government provided support for the deal with US$8 billion in financing at nearly 21%. Under CEO Sergio Marchionne, "World Class Manufacturing" or WCM, a system of thorough manufacturing quality, was introduced and several products were re-launched with quality and luxury. The Ram, Jeep, Dodge, SRT, and Chrysler divisions were separated to focus on their own identity and brand, and 11 major model refreshes occurred in 21 months. The PT Cruiser, Nitro, Liberty and Caliber models (created during DCX) were discontinued. On May 24, 2011, Chrysler repaid its $7.6 billion loans to the United States and Canadian governments. The US Treasury, through the Troubled Asset Relief Program (TARP), invested $12.5 billion in Chrysler and recovered $11.2 billion when the company shares were sold in May 2011, resulting in a $1.3 billion loss. On July 21, 2011, Fiat bought the Chrysler shares held by the US Treasury. The purchase made Chrysler foreign-owned again, this time as the luxury division. The Chrysler 300 was badged Lancia Thema in some European markets (with additional engine options), giving Lancia a much-needed replacement for its flagship. On January 21, 2014, Fiat bought the remaining shares of Chrysler owned by the VEBA worth $3.65 billion. Several days later, the intended reorganization of Fiat and Chrysler under a new holding company, Fiat Chrysler Automobiles, together with a new FCA logo were announced. The most challenging launch for this new company came immediately in January 2014 with a completely redesigned Chrysler 200. The vehicle's creation is from the completely integrated company, FCA, executing from a global compact-wide platform. On December 16, 2014, Chrysler Group LLC announced a name change to FCA US LLC. On January 12, 2017, FCA shares traded at the New York Stock Exchange lost value after the EPA accused FCA US of using emissions cheating software to evade diesel-emissions tests, however the company countered the accusations, and the chairman and CEO Sergio Marchionne sternly rejected them. The following day, shares rose as investors played down the effect of the accusations. Analysts gave estimates of potential fines from several hundred million dollars to $4 billion, although the likelihood of a hefty fine was low. Senior United States Senator Bill Nelson urged the FTC to look into possible deceptive marketing of the company's diesel-powered SUVs. Shares dropped 2.2% after the announcement. FCA US would in 2022, plead guilty to a criminal charge of conspiring to defraud the US, to wire fraud, and to violate the Clean Air Act. On July 21, 2018, Sergio Marchionne stepped down as chairman and CEO for health reasons, and was replaced by John Elkann and Michael Manley, respectively. As a result of ending domestic production of more fuel-efficient passenger automobiles such as the Dodge Dart and Chrysler 200 sedans, FCA US elected to pay $77 million in fines for violating the anti-backsliding provision of fuel economy standards set under the Energy Independence and Security Act of 2007 for its model year 2016 fleet. It was again fined for the 2017 model year for not meeting the minimum domestic passenger car standard. FCA described the $79 million civil penalty as "not expected to have a material impact on its business." As part of a January 2019 settlement, Fiat Chrysler was to recall and repair approximately 100,000 automobiles equipped with a 3.0-liter V6 EcoDiesel engine having a prohibited defeat device, pay $311 million in total civil penalties to US regulators and CARB, pay $72.5 million for state civil penalties, implement corporate governance reforms, and pay $33.5 million to mitigate excess pollution. The company was also to pay affected consumers up to $280 million and offer extended warranties on such vehicles worth $105 million. The total value of the settlement was about $800 million, though FCA did not admit liability, and it did not resolve an ongoing criminal investigation. As of 2022, management positions of Stellantis North America include: Chrysler is the smallest of the "Big Three" U.S. automakers (Stellantis North America, Ford Motor Company, and General Motors). In 2020, FCA US sold just over 1.8 million vehicles. Chrysler was the world's 11th largest vehicle manufacturer as ranked by OICA in 2012. Total Chrysler vehicle production was about 2.37 million that year. The company has since become a wholly-owned subsidiary and no longer reports global sales. In 2007, Chrysler began to offer vehicle lifetime powertrain warranty for the first registered owner or retail lessee. The deal covered owner or lessee in U.S., Puerto Rico, and the Virgin Islands, for 2009 model year vehicles, and 2006, 2007, and 2008 model year vehicles purchased on or after July 26, 2007. Covered vehicles excluded SRT models, Diesel vehicles, Sprinter models, Ram Chassis Cab, Hybrid System components (including transmission), and certain fleet vehicles. The warranty is non-transferable. After Chrysler's restructuring, the warranty program was replaced by five-year/100,000 mile transferable warranty for 2010 or later vehicles. In 2008, as a response to customer feedback citing the prospect of rising gas prices as a top concern, Chrysler launched the "Let's Refuel America" incentive campaign, which guaranteed new-car buyers a gasoline price of $2.99 for three years. With the U.S. purchase of eligible Chrysler, Jeep, and Dodge vehicles, customers could enroll in the program and receive a gas card that immediately lowers their gas price to $2.99 a gallon, and keeps it there for the three years. Chrysler plans for Lancia to codevelop products, with some vehicles being shared. Olivier Francois, Lancia's CEO, was appointed to the Chrysler division in October 2009. Francois plans to reestablish the Chrysler brand as an upscale brand. In October 2009, Dodge's car and truck lines were separated, with the name "Dodge" being used for cars, minivans, and crossovers and "Ram" for light- and medium-duty trucks and other commercial-use vehicles. In 2011, Chrysler unveiled their "Imported From Detroit" campaign with ads featuring Detroit rapper Eminem, one of which aired during the Super Bowl. The campaign highlighted the rejuvenation of the entire product lineup, which included the new, redesigned, and repackaged 2011 model year 200 sedans and 200 convertibles, the Chrysler 300 sedan, and the Chrysler Town & Country minivan. As part of the campaign, Chrysler sold a line of clothing items featuring the Monument to Joe Louis, with proceeds being funneled to Detroit-area charities, including the Boys and Girls Clubs of Southeast Michigan, Habitat for Humanity Detroit and the Marshall Mathers Foundation. In March 2011, Chrysler Group LLC filed a lawsuit against Moda Group LLC (owner of Pure Detroit clothing retailer) for copying and selling merchandise with the "Imported from Detroit" slogan. Chrysler claimed it had notified defendant of its pending trademark application February 14, but the defendant argued Chrysler had not secured a trademark for the "Imported From Detroit" phrase. On June 18, 2011, U.S. District Judge Arthur Tarnow ruled that Chrysler's request did not show that it would suffer irreparable harm or that it had a strong likelihood of winning its case. Therefore, Pure Detroit's owner, Detroit retailer Moda Group LLC, can continue selling its "Imported from Detroit" products. Tarnow also noted that Chrysler does not have a trademark on "Imported from Detroit" and rejected the automaker's argument that trademark law is not applicable to the case. In March 2012, Chrysler Group LLC and Pure Detroit agreed to a March 27 mediation to try to settle the lawsuit over the clothing company's use of "Imported from Detroit" slogan. Pure Detroit stated that Chrysler has made false claims about the origins of three vehicles - Chrysler 200, Chrysler 300 and Chrysler Town & Country - none of which are built in Detroit. Pure Detroit also said that Chrysler's Imported From Detroit merchandise is not being made in Detroit. In 2012 Chrysler and Pure Detroit came to an undisclosed settlement. Chrysler's Jefferson North Assembly, which makes the Jeep Grand Cherokee and Dodge Durango, is the only car manufacturing plant of any company remaining entirely in Detroit (General Motors operates a plant that is partly in Detroit and partly in Hamtramck). In 2011, Eminem settled a lawsuit against Audi alleging the defendant had ripped off the Chrysler 300 Super Bowl commercial in the Audi A6 Avant ad. Again in 2012, Chrysler advertised during the Super Bowl. Its two-minute February 5, 2012 Super Bowl XLVI advertisement was titled "Halftime in America". The ad drew criticism from several leading U.S. conservatives, who suggested that its messaging implied that President Barack Obama deserved a second term and, as such, was political payback for Obama's support for the federal bailout of the company. Asked about the criticism in a 60 Minutes interview with Steve Kroft, Sergio Marchionne responded "just to rectify the record I paid back the loans at 19.7% Interest. I don't think I committed to do to a commercial on top of that" and characterized the Republican reaction as "unnecessary and out of place". In 2014, Chrysler started using a new slogan, "America's Import" in ads introducing their all-new 2015 Chrysler 200, targeting foreign automakers from Germany to Japan with such ads (German performance and Japanese quality), and at the ending of selected ads, the advertisement will say, "We Built This", indicating being built in America, instead of overseas. First introduced as MyGig, Chrysler Uconnect is a system that brings interactive ability to the in-car radio and telemetric-like controls to car settings. As of mid-2015, it was installed in hundreds of thousands of Fiat Chrysler vehicles. It connects to the Internet via the mobile network of AT&T, providing the car with its own IP address. Internet connectivity using any Chrysler, Dodge, Jeep or Ram vehicle, via a Wi-Fi "hot-spot", is also available via Uconnect Web. According to Chrysler LLC, the hotspot range extends approximately 100 feet (30 m) from the vehicle in all directions, and combines both Wi-Fi and Sprint's 3G cellular connectivity. Uconnect is available on several current and was available on several discontinued Chrysler models including the current Dodge Dart, Chrysler 300, Aspen, Sebring, Town and Country, Dodge Avenger, Caliber, Grand Caravan, Challenger, Charger, Journey, Nitro, and Ram. In July 2015, IT security researchers announced a severe security flaw assumed to affect every Chrysler vehicle with Uconnect produced from late 2013 to early 2015. It allows hackers to gain access to the car over the Internet, and in the case of a Jeep Cherokee was demonstrated to enable an attacker to take control not just of the radio, A/C, and windshield wipers, but also of the car's steering, brakes and transmission. Chrysler published a patch that car owners can download and install via a USB stick, or have a car dealer install for them. Current and former brands of Stellantis North America: (1908–1913); reorganized and folded into Maxwell (1913-1971), UK; minority interest purchased by Chrysler in 1964, progressively taking controlling interest in 1967, renamed Chrysler Europe in 1971 (1954–1988), US; purchased by Chrysler and renamed Jeep-Eagle Division (1927–1947), mid-priced cars; purchased by Henry Kaiser and reorganized into Kaiser-Frazer Motors (1912-1963) US; acquired by Kaiser Motors, later Kaiser Jeep, then by AMC in 1970 In 1979, Chrysler, in cooperation with the United States Department of Energy, produced an experimental battery electric vehicle, the Chrysler ETV-1. In 1992, Chrysler developed the Dodge EPIC concept minivan. In 1993, Chrysler sold a limited-production electric minivan called the TEVan; only 56 were produced, mostly for electric utilities. A second generation, the EPIC (unrelated to the concept), was released in 1997 and discontinued in 1999. Chrysler once owned the Global Electric Motorcars company, building low-speed neighborhood electric vehicles, but sold GEM to Polaris Industries in 2011. In September 2007, Chrysler established ENVI, an in-house organization focused on electric-drive vehicles and related technologies which was disbanded by late 2009. In August 2009, Chrysler took US$70 million in grants from the U.S. Department of Energy to develop a test fleet of 220 hybrid pickup trucks and minivans. The first hybrid models, the Chrysler Aspen hybrid and the Dodge Durango hybrid, were discontinued a few months after production in 2008, sharing their GM-designed hybrid technology with GM, Daimler and BMW. Chrysler was on the Advisory Council of the PHEV Research Center, and undertook a government sponsored demonstration project with Ram and minivan vehicles. In 2012, FCA CEO Sergio Marchionne stated that Chrysler and Fiat planned to focus primarily on alternative fuels, such as compressed natural gas and Diesel, instead of hybrid and electric drivetrains for their consumer products. Fiat Chrysler bought a total of 8.2 million megagrams of U.S. greenhouse gas emission credits from competitors including Toyota, Honda, Tesla and Nissan for the 2010, 2011, 2013, and 2014 model years. It had the worst fleet average fuel economy among major manufacturers selling in the US from model years 2012–2022. The dedicated tank building division of Chrysler, this division was founded as the Chrysler Tank division in 1940, originally with the intention of providing another production line for the M2 Medium Tank, so that the U.S. Army could more rapidly build up its inventory of the type. Its first plant was the Detroit Arsenal Tank Plant. When the M2A1 was unexpectedly declared obsolete in August of the same year, plans were altered (though not without considerable difficulty) to produce the M3 Grant instead, primarily for the British as part of the United States under the counter support for Great Britain against Nazi Germany (the U.S. not yet being formally in the war), with the balance of the revised order going to the U.S. Army as the Lee. After December 1941 and the United States' entry into the war against the Axis powers, the Tank division rapidly expanded, with new facilities such as the Tank Arsenal Proving Ground at (then) Utica, Michigan. It also quickly widened the range of products it was developing and producing, including the M4 Sherman tank and the Chrysler A57 multibank tank engine. During World War II, essentially all of Chrysler's facilities were devoted to building military vehicles (the Jeep brand came later, after Chrysler acquired American Motors Corporation). They were also designing V12 and V16 hemi-engines producing 2,500 hp (1,864 kW; 2,535 PS) for airplanes, but they did not make it into production as jets were developed and were seen as the future for air travel. During the 1950s Cold War period, Chrysler made air raid sirens powered by its Hemi V-8 engines. When the Radiation Laboratory at MIT was established in 1941 to develop microwave radars, one of the first projects resulted in the SCR-584, the most widely recognized radar system of the war era. This system included a parabolic antenna six feet in diameter that was mechanically aimed in a helical pattern (round and round as well as up and down). One of Chrysler's most significant contributions to the war effort was in radar technology. For the final production design of this antenna and its highly complex drive mechanism, the Army's Signal Corps Laboratories turned to Chrysler's Central Engineering Office. There, the parabola was changed from aluminum to steel, allowing production to form using standard automotive presses. To keep weight down, 6,000 equally spaced holes were drilled in the face (this had no effect on the radiation pattern). The drive mechanism was completely redesigned, using technology derived from Chrysler's research in automotive gears and differentials. The changes resulted in improved performance, reduced weight, and easier maintenance. A large portion of the Dodge plant was used in building 1,500 of the SCR-584 antennas as well as the vans used in the systems. In April 1950, the U.S. Army established the Ordnance Guided Missile Center (OGMC) at Redstone Arsenal, adjacent to Huntsville, Alabama. To form OGMC, over 1,000 civilian and military personnel were transferred from Fort Bliss, Texas. Included was a group of German scientists and engineers led by Wernher von Braun; this group had been brought to America under Project Paperclip. OGMC designed the Army's first short-range ballistic missile, the PGM-11 Redstone, based on the WWII German V-2 missile. Chrysler established the Missile Division to serve as the Redstone prime contractor, setting up an engineering operation in Huntsville and for production obtaining use from the U.S. Navy of a large plant in Sterling Heights, Michigan. The Redstone was in active service from 1958 until 1964; it was also the first missile to test-launch a live nuclear weapon, first detonated in a 1958 test in the South Pacific. Working together, the Missile Division and von Braun's team greatly increased the capability of the Redstone, resulting in the PGM-19 Jupiter, a medium-range ballistic missile. In May 1959, a Jupiter missile launched two small monkeys into space in a nose cone; this was America's first successful flight and recovery of live space payloads. Responsibility for deploying Jupiter missiles was transferred from the Army to the Air Force; armed with nuclear warheads, they were first deployed in Italy and Turkey during the early 1960s. In July 1959, NASA chose the Redstone missile as the basis for the Mercury-Redstone Launch Vehicle to be used for suborbital test flights of the Project Mercury spacecraft. Three uncrewed MRLV launch attempts were made between November 1960 and March 1961, two of which were successful. The MRLV successfully launched the chimpanzee Ham, and astronauts Alan Shepard and Gus Grissom on three suborbital flights in January, May, and July 1961, respectively. America's more ambitious crewed space travel plans included the design of the Saturn series of heavy-lift launch vehicles by a team headed by Wernher von Braun. Chrysler's Huntsville operation, then designated the Space Division, became Marshall Space Flight Center's prime contractor for the first stage of the Saturn I and Saturn IB versions. The design was based on a cluster of Redstone and Jupiter fuel tanks and Chrysler built it for the Apollo program in the Michoud Assembly Facility in East New Orleans, one of the largest manufacturing plants in the world. Between October 1961 and July 1975, NASA used ten Saturn Is and nine Saturn IBs for suborbital and orbital flights, all of which were successful; Chrysler missiles and boosters never suffered a launch failure. The division was also a subcontractor which modified one of the mobile launcher platforms for use with the Saturn IB rockets using Saturn V infrastructure.	[ { "paragraph_id": 0, "text": "FCA US, LLC, doing business as Stellantis North America and formerly Chrysler Corporation (/ˈkraɪslər/ KRY-slər), is one of the \"Detroit Three\" automobile manufacturers in the United States, headquartered in Auburn Hills, Michigan. It is the American subsidiary of the multinational automotive company Stellantis. Stellantis North America sells vehicles worldwide under the Chrysler, Dodge, Jeep, and Ram nameplates. It also includes Mopar, its automotive parts and accessories division, and SRT, its performance automobile division. The division also distributes Alfa Romeo, Fiat and Maserati vehicles in North America.", "title": "" }, { "paragraph_id": 1, "text": "The original Chrysler Corporation was founded in 1925 by Walter Chrysler from the remains of the Maxwell Motor Company. It was acquired by Daimler-Benz, which in 1998 renamed itself DaimlerChrysler. After Daimler divested from Chrysler in 2007, the company operated as Chrysler LLC (2007–2009), and Chrysler Group LLC (2009–2014) before being acquired by Fiat S.p.A. and becoming a subsidiary of the newly formed Fiat Chrysler Automobiles (\"FCA\") in 2014. Chrysler in 2021 is a subsidiary of Stellantis, the company formed from the merger between FCA and PSA Group (Peugeot Société Anonyme) in 2021.", "title": "" }, { "paragraph_id": 2, "text": "After founding the company, Walter Chrysler used the General Motors brand diversification and hierarchy strategy that he had become familiar with when he worked in the Buick division at General Motors. He then acquired Fargo Trucks and the Dodge Brothers Company, and created the Plymouth and DeSoto brands in 1928. Facing postwar declines in market share, productivity, and profitability, as GM and Ford were growing, Chrysler borrowed $250 million in 1954 from Prudential Insurance to pay for expansion and updated car designs.", "title": "" }, { "paragraph_id": 3, "text": "Chrysler expanded into Europe by taking control of French, British, and Spanish auto companies in the 1960s; Chrysler Europe was sold in 1978 to PSA Peugeot Citroën for $1 billion. The company struggled to adapt to changing markets, increased U.S. import competition, and safety and environmental regulation in the 1970s. It began an engineering partnership with Mitsubishi Motors, and began selling Mitsubishi vehicles branded as Dodge and Plymouth in North America. On the verge of bankruptcy in the late 1970s, it was saved by $1.5 billion in loan guarantees from the U.S. government. New CEO Lee Iacocca was credited with returning the company to profitability in the 1980s. In 1985, Diamond-Star Motors was created, further expanding the Chrysler-Mitsubishi relationship. In 1987, Chrysler acquired American Motors Corporation (AMC), which brought the profitable Jeep, as well as the newly formed Eagle, brands under the Chrysler umbrella. In 1998, Chrysler merged with German automaker Daimler-Benz to form DaimlerChrysler AG; the merger proved contentious with investors. As a result, Chrysler was sold to Cerberus Capital Management and renamed Chrysler LLC in 2007.", "title": "" }, { "paragraph_id": 4, "text": "Like the other Big Three automobile manufacturers, Chrysler was impacted by the automotive industry crisis of 2008–2010. The company remained in business through a combination of negotiations with creditors, filing for Chapter 11 bankruptcy reorganization on April 30, 2009, and participating in a bailout from the U.S. government through the Troubled Asset Relief Program. On June 10, 2009, Chrysler emerged from the bankruptcy proceedings with the United Auto Workers pension fund, Fiat S.p.A., and the U.S. and Canadian governments as principal owners. The bankruptcy resulted in Chrysler defaulting on over $4 billion in debts. In May 2011, Chrysler finished repaying its obligations to the U.S. government five years early, although the cost to the American taxpayer was $1.3 billion.", "title": "" }, { "paragraph_id": 5, "text": "Over the next few years, Fiat S.p.A. gradually acquired the other parties' shares. In January 2014, Fiat acquired the rest of Chrysler from the United Auto Workers retiree health trust, making Chrysler Group a subsidiary of Fiat S.p.A. In May 2014, Fiat Chrysler Automobiles was established by merging Fiat S.p.A. into the company. Chrysler Group LLC remained a subsidiary until December 15, 2014, when it was renamed FCA US LLC, to reflect the Fiat-Chrysler merger.", "title": "" }, { "paragraph_id": 6, "text": "The Chrysler company was founded by Walter Chrysler on June 6, 1925, when the Maxwell Motor Company (est. 1904) was re-organized into the Chrysler Corporation. The company was headquartered in the Detroit enclave of Highland Park, where it remained until completing the move to its present Auburn Hills location in 1996.", "title": "History" }, { "paragraph_id": 7, "text": "Chrysler had arrived at the ailing Maxwell-Chalmers company in the early 1920s, hired to overhaul the company's troubled operations (after a similar rescue job at the Willys-Overland car company). In late 1923, production of the Chalmers automobile was ended.", "title": "History" }, { "paragraph_id": 8, "text": "In January 1924, Walter Chrysler launched the well-received Chrysler automobile. The Chrysler Six was designed to provide customers with an advanced, well-engineered car, at an affordable price. Elements of this car are traceable to a prototype which had been under development at Willys during Chrysler's tenure The original 1924 Chrysler included a carburetor air filter, high compression engine, full pressure lubrication, and an oil filter, features absent from most autos at the time. Among the innovations in its early years were the first practical mass-produced four-wheel hydraulic brakes, a system nearly completely engineered by Chrysler with patents assigned to Lockheed, and rubber engine mounts, called \"Floating Power\" to reduce vibration. Chrysler also developed a wheel with a ridged rim, designed to keep a deflated tire from flying off the wheel. This wheel was eventually adopted by the auto industry worldwide.", "title": "History" }, { "paragraph_id": 9, "text": "The Maxwell brand was dropped after the 1925 model year, with the new, lower-priced four-cylinder Chryslers introduced for the 1926 year being badge-engineered Maxwells. The advanced engineering and testing that went into Chrysler Corporation cars helped to push the company to the second-place position in U.S. sales by 1936, which it held until 1949.", "title": "History" }, { "paragraph_id": 10, "text": "In 1928, the Chrysler Corporation began dividing its vehicle offerings by price class and function. The Plymouth brand was introduced at the low-priced end of the market (created essentially by once again reworking and rebadging the Chrysler Series 50 four-cylinder model). At the same time, the DeSoto brand was introduced in the medium-price field. Also in 1928, Chrysler bought the Dodge Brothers automobile and truck company and continued the successful Dodge line of automobiles and Fargo range of trucks. By the mid-1930s, the DeSoto and Dodge divisions would trade places in the corporate hierarchy.", "title": "History" }, { "paragraph_id": 11, "text": "The Imperial name had been used since 1926 but was never a separate make, just the top-of-the-line Chrysler. However, in 1955, the company decided to offer it as its own make/brand and division to better compete with its rivals, Lincoln and Cadillac. This addition changed the company's traditional four-make lineup to five (in order of price from bottom to top): Plymouth, Dodge, DeSoto, Chrysler, and the now-separate Imperial.", "title": "History" }, { "paragraph_id": 12, "text": "In 1954, Chrysler was the exclusive provider of its Hemi engine in the Facel Vega, a Paris coachbuilder that offered their own line of hand-built luxury performance cars, with the PowerFlite and TorqueFlite transmissions offered. The Facel Vega Excellence was a four-door hardtop with rear-hinged coach doors that listed for US$12,800 ($129,831 in 2022 dollars ).", "title": "History" }, { "paragraph_id": 13, "text": "On April 28, 1955, Chrysler and Philco announced the development and production of the World's First All-Transistor car radio. The all-transistor car radio, Mopar model 914HR, developed and produced by Chrysler and Philco, was a $150 option on the 1956 Imperial automobile models. Philco began manufacturing this radio in the fall of 1955 at its Sandusky Ohio plant.", "title": "History" }, { "paragraph_id": 14, "text": "On September 28, 1957, Chrysler announced the first production electronic fuel injection (EFI), as an option on some of its new 1958 car models (Chrysler 300D, Dodge D500, DeSoto Adventurer, Plymouth Fury). The first attempt to use this system was by American Motors on the 1957 Rambler Rebel. Bendix Corporation's Electrojector used a transistor computer brain modulator box, but teething problems on pre-production cars meant very few cars were made. The EFI system in the Rambler ran fine in warm weather, but suffered hard starting in cooler temperatures and AMC decided not to use this EFI system on its 1957 Rambler Rebel production cars that were sold to the public. Chrysler also used the Bendix \"Electrojector\" fuel injection system and only around 35 vehicles were built with this option, on its 1958 production-built car models. Owners of EFI Chryslers were so dissatisfied that all but one were retrofitted with carburetors (while that one has been completely restored, with original EFI electronic problems resolved).", "title": "History" }, { "paragraph_id": 15, "text": "The Valiant was also introduced for the 1960 model year as a distinct brand. In the U.S. market, Valiant was made a model in the Plymouth line for 1961 and the DeSoto make was discontinued in 1961. With those exceptions per applicable year and market, Chrysler's range from lowest to highest price from the 1940s through the 1970s was Valiant, Plymouth, Dodge, DeSoto, Chrysler, and Imperial.", "title": "History" }, { "paragraph_id": 16, "text": "From 1963 through 1969, Chrysler increased its existing stakes to take full control of the French Simca, British Rootes, and Spanish Barreiros companies, merging them into Chrysler Europe in 1967. In the 1970s, an engineering partnership was established with Mitsubishi Motors, and Chrysler began selling Mitsubishi vehicles branded as Dodge and Plymouth in North America.", "title": "History" }, { "paragraph_id": 17, "text": "Chrysler struggled to adapt to the changing environment of the 1970s. When consumer tastes shifted to smaller cars in the early 1970s, particularly after the 1973 oil crisis, Chrysler could not meet the demand, although their compact models on the \"A\" body platform, the Dodge Dart and Plymouth Valiant, had proven economy and reliability and sold very well. Additional burdens came from increased US import competition, and tougher government regulation of car safety, fuel economy, and emissions. As the smallest of the Big 3 US automakers, Chrysler lacked the financial resources to meet all of these challenges. In 1976, with the demise of the reliable Dart/Valiant, quality control declined. Their replacements, the Dodge Aspen and Plymouth Volare, were comfortable and had good roadability, but owners soon experienced major reliability problems which crept into other models as well. Engines failed and/or did not run well, and premature rust plagued bodies. In 1978, Lee Iacocca was brought in to turn the company around, and in 1979 Iacocca sought US government help. Congress later passed the Loan Guarantee Act providing $1.5 billion in loan guarantees. The Loan Guarantee Act required that Chrysler also obtain $2 billion in concessions or aid from sources outside the federal government, which included interest rate reductions for $650 million of the savings, asset sales of $300 million, local and state tax concessions of $250 million, and wage reductions of about $590 million along with a $50 million stock offering. $180 million was to come from concessions from dealers and suppliers. Also in 1978, Iacocca offloaded the ailing European operation to PSA Peugeot Citroën for a nominal $1, taking with it the group's substantial losses and debts which had been dragging the rest of the business down.", "title": "History" }, { "paragraph_id": 18, "text": "After a period of plant closures and salary cuts agreed to by both management and the auto unions, the loans were repaid with interest in 1983. In November 1983, the Dodge Caravan/Plymouth Voyager was introduced, establishing the minivan as a major category, and initiating Chrysler's return to stability.", "title": "History" }, { "paragraph_id": 19, "text": "In 1985, Diamond-Star Motors was created, further expanding the Chrysler-Mitsubishi relationship. In 1987, Chrysler acquired American Motors Corporation (AMC), which brought the profitable Jeep brand under the Chrysler umbrella.", "title": "History" }, { "paragraph_id": 20, "text": "In 1985, Chrysler entered an agreement with AMC to produce Chrysler M platform rear-drive, as well as Dodge Omnis front wheel drive cars, in AMC's Kenosha, Wisconsin, plant. In 1987, Chrysler acquired the 47% ownership of AMC that was held by Renault. The remaining outstanding shares of AMC were bought on the NYSE by August 5, 1987, making the deal valued somewhere between US$1.7 billion and US$2 billion, depending on how costs were counted. Chrysler CEO Lee Iacocca wanted the Jeep brand, particularly the Jeep Grand Cherokee (ZJ) that was under development, the new world-class manufacturing plant in Bramalea, Ontario, and AMC's engineering and management talent that became critical for Chrysler's future success. Chrysler established the Jeep/Eagle division as a \"specialty\" arm to market products distinctly different from the K-car-based products with the Eagle cars targeting import buyers. Former AMC dealers sold Jeep vehicles and various new Eagle models, as well as Chrysler products, strengthening the automaker's retail distribution system.", "title": "History" }, { "paragraph_id": 21, "text": "Eurostar, a joint venture between Chrysler and Steyr-Daimler-Puch, began producing the Chrysler Voyager in Austria for European markets in 1992.", "title": "History" }, { "paragraph_id": 22, "text": "In 1998, Chrysler and its subsidiaries entered into a partnership dubbed a \"merger of equals\" with German-based Daimler-Benz AG, creating the combined entity DaimlerChrysler AG. To the surprise of many stockholders, Daimler acquired Chrysler in a stock swap before Chrysler CEO Bob Eaton retired. Under DaimlerChrysler, the company was named DaimlerChrysler Motors Company LLC, with its U.S. operations generally called \"DCX\". The Eagle brand was retired soon after Chrysler's merger with Daimler-Benz in 1998 Jeep became a stand-alone division, and efforts were made to merge the Chrysler and Jeep brands as one sales unit. In 2001, the Plymouth brand was also discontinued.", "title": "History" }, { "paragraph_id": 23, "text": "Eurostar also built the Chrysler PT Cruiser in 2001 and 2002. The Austrian venture was sold to Magna International in 2002 and became Magna Steyr. The Voyager continued in production until 2007, whereas the Chrysler 300C, Jeep Grand Cherokee, and Jeep Commander were also built at the plant from 2005 until 2010.", "title": "History" }, { "paragraph_id": 24, "text": "On May 14, 2007, DaimlerChrysler announced the sale of 80.1% of Chrysler Group to American private equity firm Cerberus Capital Management, L.P., thereafter known as Chrysler LLC, although Daimler (renamed as Daimler AG) continued to hold a 19.9% stake.", "title": "History" }, { "paragraph_id": 25, "text": "The economic collapse during the Financial crisis of 2007–2008 pushed the company to the brink. On April 30, 2009, the automaker filed for Chapter 11 bankruptcy protection to be able to operate as a going concern, while renegotiating its debt structure and other obligations, which resulted in the corporation defaulting on over $4 billion in secured debts. The U.S. government described the company's action as a \"prepackaged surgical bankruptcy\".", "title": "History" }, { "paragraph_id": 26, "text": "On June 10, 2009, substantially all of Chrysler's assets were sold to \"New Chrysler\", organized as Chrysler Group LLC. The federal government provided support for the deal with US$8 billion in financing at nearly 21%. Under CEO Sergio Marchionne, \"World Class Manufacturing\" or WCM, a system of thorough manufacturing quality, was introduced and several products were re-launched with quality and luxury. The Ram, Jeep, Dodge, SRT, and Chrysler divisions were separated to focus on their own identity and brand, and 11 major model refreshes occurred in 21 months. The PT Cruiser, Nitro, Liberty and Caliber models (created during DCX) were discontinued. On May 24, 2011, Chrysler repaid its $7.6 billion loans to the United States and Canadian governments. The US Treasury, through the Troubled Asset Relief Program (TARP), invested $12.5 billion in Chrysler and recovered $11.2 billion when the company shares were sold in May 2011, resulting in a $1.3 billion loss. On July 21, 2011, Fiat bought the Chrysler shares held by the US Treasury. The purchase made Chrysler foreign-owned again, this time as the luxury division. The Chrysler 300 was badged Lancia Thema in some European markets (with additional engine options), giving Lancia a much-needed replacement for its flagship.", "title": "History" }, { "paragraph_id": 27, "text": "On January 21, 2014, Fiat bought the remaining shares of Chrysler owned by the VEBA worth $3.65 billion. Several days later, the intended reorganization of Fiat and Chrysler under a new holding company, Fiat Chrysler Automobiles, together with a new FCA logo were announced. The most challenging launch for this new company came immediately in January 2014 with a completely redesigned Chrysler 200. The vehicle's creation is from the completely integrated company, FCA, executing from a global compact-wide platform.", "title": "History" }, { "paragraph_id": 28, "text": "On December 16, 2014, Chrysler Group LLC announced a name change to FCA US LLC.", "title": "History" }, { "paragraph_id": 29, "text": "On January 12, 2017, FCA shares traded at the New York Stock Exchange lost value after the EPA accused FCA US of using emissions cheating software to evade diesel-emissions tests, however the company countered the accusations, and the chairman and CEO Sergio Marchionne sternly rejected them. The following day, shares rose as investors played down the effect of the accusations. Analysts gave estimates of potential fines from several hundred million dollars to $4 billion, although the likelihood of a hefty fine was low. Senior United States Senator Bill Nelson urged the FTC to look into possible deceptive marketing of the company's diesel-powered SUVs. Shares dropped 2.2% after the announcement. FCA US would in 2022, plead guilty to a criminal charge of conspiring to defraud the US, to wire fraud, and to violate the Clean Air Act.", "title": "History" }, { "paragraph_id": 30, "text": "On July 21, 2018, Sergio Marchionne stepped down as chairman and CEO for health reasons, and was replaced by John Elkann and Michael Manley, respectively.", "title": "History" }, { "paragraph_id": 31, "text": "As a result of ending domestic production of more fuel-efficient passenger automobiles such as the Dodge Dart and Chrysler 200 sedans, FCA US elected to pay $77 million in fines for violating the anti-backsliding provision of fuel economy standards set under the Energy Independence and Security Act of 2007 for its model year 2016 fleet. It was again fined for the 2017 model year for not meeting the minimum domestic passenger car standard. FCA described the $79 million civil penalty as \"not expected to have a material impact on its business.\"", "title": "History" }, { "paragraph_id": 32, "text": "As part of a January 2019 settlement, Fiat Chrysler was to recall and repair approximately 100,000 automobiles equipped with a 3.0-liter V6 EcoDiesel engine having a prohibited defeat device, pay $311 million in total civil penalties to US regulators and CARB, pay $72.5 million for state civil penalties, implement corporate governance reforms, and pay $33.5 million to mitigate excess pollution. The company was also to pay affected consumers up to $280 million and offer extended warranties on such vehicles worth $105 million. The total value of the settlement was about $800 million, though FCA did not admit liability, and it did not resolve an ongoing criminal investigation.", "title": "History" }, { "paragraph_id": 33, "text": "As of 2022, management positions of Stellantis North America include:", "title": "Corporate governance" }, { "paragraph_id": 34, "text": "Chrysler is the smallest of the \"Big Three\" U.S. automakers (Stellantis North America, Ford Motor Company, and General Motors). In 2020, FCA US sold just over 1.8 million vehicles.", "title": "Sales and marketing" }, { "paragraph_id": 35, "text": "Chrysler was the world's 11th largest vehicle manufacturer as ranked by OICA in 2012. Total Chrysler vehicle production was about 2.37 million that year. The company has since become a wholly-owned subsidiary and no longer reports global sales.", "title": "Sales and marketing" }, { "paragraph_id": 36, "text": "In 2007, Chrysler began to offer vehicle lifetime powertrain warranty for the first registered owner or retail lessee. The deal covered owner or lessee in U.S., Puerto Rico, and the Virgin Islands, for 2009 model year vehicles, and 2006, 2007, and 2008 model year vehicles purchased on or after July 26, 2007. Covered vehicles excluded SRT models, Diesel vehicles, Sprinter models, Ram Chassis Cab, Hybrid System components (including transmission), and certain fleet vehicles. The warranty is non-transferable. After Chrysler's restructuring, the warranty program was replaced by five-year/100,000 mile transferable warranty for 2010 or later vehicles.", "title": "Sales and marketing" }, { "paragraph_id": 37, "text": "In 2008, as a response to customer feedback citing the prospect of rising gas prices as a top concern, Chrysler launched the \"Let's Refuel America\" incentive campaign, which guaranteed new-car buyers a gasoline price of $2.99 for three years. With the U.S. purchase of eligible Chrysler, Jeep, and Dodge vehicles, customers could enroll in the program and receive a gas card that immediately lowers their gas price to $2.99 a gallon, and keeps it there for the three years.", "title": "Sales and marketing" }, { "paragraph_id": 38, "text": "Chrysler plans for Lancia to codevelop products, with some vehicles being shared. Olivier Francois, Lancia's CEO, was appointed to the Chrysler division in October 2009. Francois plans to reestablish the Chrysler brand as an upscale brand.", "title": "Sales and marketing" }, { "paragraph_id": 39, "text": "In October 2009, Dodge's car and truck lines were separated, with the name \"Dodge\" being used for cars, minivans, and crossovers and \"Ram\" for light- and medium-duty trucks and other commercial-use vehicles.", "title": "Sales and marketing" }, { "paragraph_id": 40, "text": "In 2011, Chrysler unveiled their \"Imported From Detroit\" campaign with ads featuring Detroit rapper Eminem, one of which aired during the Super Bowl. The campaign highlighted the rejuvenation of the entire product lineup, which included the new, redesigned, and repackaged 2011 model year 200 sedans and 200 convertibles, the Chrysler 300 sedan, and the Chrysler Town & Country minivan. As part of the campaign, Chrysler sold a line of clothing items featuring the Monument to Joe Louis, with proceeds being funneled to Detroit-area charities, including the Boys and Girls Clubs of Southeast Michigan, Habitat for Humanity Detroit and the Marshall Mathers Foundation.", "title": "Sales and marketing" }, { "paragraph_id": 41, "text": "In March 2011, Chrysler Group LLC filed a lawsuit against Moda Group LLC (owner of Pure Detroit clothing retailer) for copying and selling merchandise with the \"Imported from Detroit\" slogan. Chrysler claimed it had notified defendant of its pending trademark application February 14, but the defendant argued Chrysler had not secured a trademark for the \"Imported From Detroit\" phrase. On June 18, 2011, U.S. District Judge Arthur Tarnow ruled that Chrysler's request did not show that it would suffer irreparable harm or that it had a strong likelihood of winning its case. Therefore, Pure Detroit's owner, Detroit retailer Moda Group LLC, can continue selling its \"Imported from Detroit\" products. Tarnow also noted that Chrysler does not have a trademark on \"Imported from Detroit\" and rejected the automaker's argument that trademark law is not applicable to the case. In March 2012, Chrysler Group LLC and Pure Detroit agreed to a March 27 mediation to try to settle the lawsuit over the clothing company's use of \"Imported from Detroit\" slogan. Pure Detroit stated that Chrysler has made false claims about the origins of three vehicles - Chrysler 200, Chrysler 300 and Chrysler Town & Country - none of which are built in Detroit. Pure Detroit also said that Chrysler's Imported From Detroit merchandise is not being made in Detroit. In 2012 Chrysler and Pure Detroit came to an undisclosed settlement.", "title": "Sales and marketing" }, { "paragraph_id": 42, "text": "Chrysler's Jefferson North Assembly, which makes the Jeep Grand Cherokee and Dodge Durango, is the only car manufacturing plant of any company remaining entirely in Detroit (General Motors operates a plant that is partly in Detroit and partly in Hamtramck).", "title": "Sales and marketing" }, { "paragraph_id": 43, "text": "In 2011, Eminem settled a lawsuit against Audi alleging the defendant had ripped off the Chrysler 300 Super Bowl commercial in the Audi A6 Avant ad.", "title": "Sales and marketing" }, { "paragraph_id": 44, "text": "Again in 2012, Chrysler advertised during the Super Bowl. Its two-minute February 5, 2012 Super Bowl XLVI advertisement was titled \"Halftime in America\". The ad drew criticism from several leading U.S. conservatives, who suggested that its messaging implied that President Barack Obama deserved a second term and, as such, was political payback for Obama's support for the federal bailout of the company. Asked about the criticism in a 60 Minutes interview with Steve Kroft, Sergio Marchionne responded \"just to rectify the record I paid back the loans at 19.7% Interest. I don't think I committed to do to a commercial on top of that\" and characterized the Republican reaction as \"unnecessary and out of place\".", "title": "Sales and marketing" }, { "paragraph_id": 45, "text": "In 2014, Chrysler started using a new slogan, \"America's Import\" in ads introducing their all-new 2015 Chrysler 200, targeting foreign automakers from Germany to Japan with such ads (German performance and Japanese quality), and at the ending of selected ads, the advertisement will say, \"We Built This\", indicating being built in America, instead of overseas.", "title": "Sales and marketing" }, { "paragraph_id": 46, "text": "First introduced as MyGig, Chrysler Uconnect is a system that brings interactive ability to the in-car radio and telemetric-like controls to car settings. As of mid-2015, it was installed in hundreds of thousands of Fiat Chrysler vehicles. It connects to the Internet via the mobile network of AT&T, providing the car with its own IP address. Internet connectivity using any Chrysler, Dodge, Jeep or Ram vehicle, via a Wi-Fi \"hot-spot\", is also available via Uconnect Web. According to Chrysler LLC, the hotspot range extends approximately 100 feet (30 m) from the vehicle in all directions, and combines both Wi-Fi and Sprint's 3G cellular connectivity. Uconnect is available on several current and was available on several discontinued Chrysler models including the current Dodge Dart, Chrysler 300, Aspen, Sebring, Town and Country, Dodge Avenger, Caliber, Grand Caravan, Challenger, Charger, Journey, Nitro, and Ram.", "title": "Product line" }, { "paragraph_id": 47, "text": "In July 2015, IT security researchers announced a severe security flaw assumed to affect every Chrysler vehicle with Uconnect produced from late 2013 to early 2015. It allows hackers to gain access to the car over the Internet, and in the case of a Jeep Cherokee was demonstrated to enable an attacker to take control not just of the radio, A/C, and windshield wipers, but also of the car's steering, brakes and transmission. Chrysler published a patch that car owners can download and install via a USB stick, or have a car dealer install for them.", "title": "Product line" }, { "paragraph_id": 48, "text": "Current and former brands of Stellantis North America:", "title": "Brands" }, { "paragraph_id": 49, "text": "(1908–1913); reorganized and folded into Maxwell", "title": "Brands" }, { "paragraph_id": 50, "text": "(1913-1971), UK; minority interest purchased by Chrysler in 1964, progressively taking controlling interest in 1967, renamed Chrysler Europe in 1971", "title": "Brands" }, { "paragraph_id": 51, "text": "(1954–1988), US; purchased by Chrysler and renamed Jeep-Eagle Division", "title": "Brands" }, { "paragraph_id": 52, "text": "(1927–1947), mid-priced cars; purchased by Henry Kaiser and reorganized into Kaiser-Frazer Motors", "title": "Brands" }, { "paragraph_id": 53, "text": "(1912-1963) US; acquired by Kaiser Motors, later Kaiser Jeep, then by AMC in 1970", "title": "Brands" }, { "paragraph_id": 54, "text": "In 1979, Chrysler, in cooperation with the United States Department of Energy, produced an experimental battery electric vehicle, the Chrysler ETV-1.", "title": "Environmental initiatives" }, { "paragraph_id": 55, "text": "In 1992, Chrysler developed the Dodge EPIC concept minivan. In 1993, Chrysler sold a limited-production electric minivan called the TEVan; only 56 were produced, mostly for electric utilities. A second generation, the EPIC (unrelated to the concept), was released in 1997 and discontinued in 1999.", "title": "Environmental initiatives" }, { "paragraph_id": 56, "text": "Chrysler once owned the Global Electric Motorcars company, building low-speed neighborhood electric vehicles, but sold GEM to Polaris Industries in 2011.", "title": "Environmental initiatives" }, { "paragraph_id": 57, "text": "In September 2007, Chrysler established ENVI, an in-house organization focused on electric-drive vehicles and related technologies which was disbanded by late 2009. In August 2009, Chrysler took US$70 million in grants from the U.S. Department of Energy to develop a test fleet of 220 hybrid pickup trucks and minivans.", "title": "Environmental initiatives" }, { "paragraph_id": 58, "text": "The first hybrid models, the Chrysler Aspen hybrid and the Dodge Durango hybrid, were discontinued a few months after production in 2008, sharing their GM-designed hybrid technology with GM, Daimler and BMW.", "title": "Environmental initiatives" }, { "paragraph_id": 59, "text": "Chrysler was on the Advisory Council of the PHEV Research Center, and undertook a government sponsored demonstration project with Ram and minivan vehicles.", "title": "Environmental initiatives" }, { "paragraph_id": 60, "text": "In 2012, FCA CEO Sergio Marchionne stated that Chrysler and Fiat planned to focus primarily on alternative fuels, such as compressed natural gas and Diesel, instead of hybrid and electric drivetrains for their consumer products.", "title": "Environmental initiatives" }, { "paragraph_id": 61, "text": "Fiat Chrysler bought a total of 8.2 million megagrams of U.S. greenhouse gas emission credits from competitors including Toyota, Honda, Tesla and Nissan for the 2010, 2011, 2013, and 2014 model years. It had the worst fleet average fuel economy among major manufacturers selling in the US from model years 2012–2022.", "title": "Environmental initiatives" }, { "paragraph_id": 62, "text": "The dedicated tank building division of Chrysler, this division was founded as the Chrysler Tank division in 1940, originally with the intention of providing another production line for the M2 Medium Tank, so that the U.S. Army could more rapidly build up its inventory of the type. Its first plant was the Detroit Arsenal Tank Plant. When the M2A1 was unexpectedly declared obsolete in August of the same year, plans were altered (though not without considerable difficulty) to produce the M3 Grant instead, primarily for the British as part of the United States under the counter support for Great Britain against Nazi Germany (the U.S. not yet being formally in the war), with the balance of the revised order going to the U.S. Army as the Lee. After December 1941 and the United States' entry into the war against the Axis powers, the Tank division rapidly expanded, with new facilities such as the Tank Arsenal Proving Ground at (then) Utica, Michigan. It also quickly widened the range of products it was developing and producing, including the M4 Sherman tank and the Chrysler A57 multibank tank engine.", "title": "Chrysler Defense" }, { "paragraph_id": 63, "text": "During World War II, essentially all of Chrysler's facilities were devoted to building military vehicles (the Jeep brand came later, after Chrysler acquired American Motors Corporation). They were also designing V12 and V16 hemi-engines producing 2,500 hp (1,864 kW; 2,535 PS) for airplanes, but they did not make it into production as jets were developed and were seen as the future for air travel. During the 1950s Cold War period, Chrysler made air raid sirens powered by its Hemi V-8 engines.", "title": "Special programs" }, { "paragraph_id": 64, "text": "When the Radiation Laboratory at MIT was established in 1941 to develop microwave radars, one of the first projects resulted in the SCR-584, the most widely recognized radar system of the war era. This system included a parabolic antenna six feet in diameter that was mechanically aimed in a helical pattern (round and round as well as up and down).", "title": "Special programs" }, { "paragraph_id": 65, "text": "One of Chrysler's most significant contributions to the war effort was in radar technology. For the final production design of this antenna and its highly complex drive mechanism, the Army's Signal Corps Laboratories turned to Chrysler's Central Engineering Office. There, the parabola was changed from aluminum to steel, allowing production to form using standard automotive presses. To keep weight down, 6,000 equally spaced holes were drilled in the face (this had no effect on the radiation pattern). The drive mechanism was completely redesigned, using technology derived from Chrysler's research in automotive gears and differentials. The changes resulted in improved performance, reduced weight, and easier maintenance. A large portion of the Dodge plant was used in building 1,500 of the SCR-584 antennas as well as the vans used in the systems.", "title": "Special programs" }, { "paragraph_id": 66, "text": "In April 1950, the U.S. Army established the Ordnance Guided Missile Center (OGMC) at Redstone Arsenal, adjacent to Huntsville, Alabama. To form OGMC, over 1,000 civilian and military personnel were transferred from Fort Bliss, Texas. Included was a group of German scientists and engineers led by Wernher von Braun; this group had been brought to America under Project Paperclip. OGMC designed the Army's first short-range ballistic missile, the PGM-11 Redstone, based on the WWII German V-2 missile. Chrysler established the Missile Division to serve as the Redstone prime contractor, setting up an engineering operation in Huntsville and for production obtaining use from the U.S. Navy of a large plant in Sterling Heights, Michigan. The Redstone was in active service from 1958 until 1964; it was also the first missile to test-launch a live nuclear weapon, first detonated in a 1958 test in the South Pacific.", "title": "Special programs" }, { "paragraph_id": 67, "text": "Working together, the Missile Division and von Braun's team greatly increased the capability of the Redstone, resulting in the PGM-19 Jupiter, a medium-range ballistic missile. In May 1959, a Jupiter missile launched two small monkeys into space in a nose cone; this was America's first successful flight and recovery of live space payloads. Responsibility for deploying Jupiter missiles was transferred from the Army to the Air Force; armed with nuclear warheads, they were first deployed in Italy and Turkey during the early 1960s.", "title": "Special programs" }, { "paragraph_id": 68, "text": "In July 1959, NASA chose the Redstone missile as the basis for the Mercury-Redstone Launch Vehicle to be used for suborbital test flights of the Project Mercury spacecraft. Three uncrewed MRLV launch attempts were made between November 1960 and March 1961, two of which were successful. The MRLV successfully launched the chimpanzee Ham, and astronauts Alan Shepard and Gus Grissom on three suborbital flights in January, May, and July 1961, respectively.", "title": "Special programs" }, { "paragraph_id": 69, "text": "America's more ambitious crewed space travel plans included the design of the Saturn series of heavy-lift launch vehicles by a team headed by Wernher von Braun. Chrysler's Huntsville operation, then designated the Space Division, became Marshall Space Flight Center's prime contractor for the first stage of the Saturn I and Saturn IB versions. The design was based on a cluster of Redstone and Jupiter fuel tanks and Chrysler built it for the Apollo program in the Michoud Assembly Facility in East New Orleans, one of the largest manufacturing plants in the world. Between October 1961 and July 1975, NASA used ten Saturn Is and nine Saturn IBs for suborbital and orbital flights, all of which were successful; Chrysler missiles and boosters never suffered a launch failure. The division was also a subcontractor which modified one of the mobile launcher platforms for use with the Saturn IB rockets using Saturn V infrastructure.", "title": "Special programs" } ]	FCA US, LLC, doing business as Stellantis North America and formerly Chrysler Corporation, is one of the "Detroit Three" automobile manufacturers in the United States, headquartered in Auburn Hills, Michigan. It is the American subsidiary of the multinational automotive company Stellantis. Stellantis North America sells vehicles worldwide under the Chrysler, Dodge, Jeep, and Ram nameplates. It also includes Mopar, its automotive parts and accessories division, and SRT, its performance automobile division. The division also distributes Alfa Romeo, Fiat and Maserati vehicles in North America. The original Chrysler Corporation was founded in 1925 by Walter Chrysler from the remains of the Maxwell Motor Company. It was acquired by Daimler-Benz, which in 1998 renamed itself DaimlerChrysler. After Daimler divested from Chrysler in 2007, the company operated as Chrysler LLC (2007–2009), and Chrysler Group LLC (2009–2014) before being acquired by Fiat S.p.A. and becoming a subsidiary of the newly formed Fiat Chrysler Automobiles ("FCA") in 2014. Chrysler in 2021 is a subsidiary of Stellantis, the company formed from the merger between FCA and PSA Group in 2021. After founding the company, Walter Chrysler used the General Motors brand diversification and hierarchy strategy that he had become familiar with when he worked in the Buick division at General Motors. He then acquired Fargo Trucks and the Dodge Brothers Company, and created the Plymouth and DeSoto brands in 1928. Facing postwar declines in market share, productivity, and profitability, as GM and Ford were growing, Chrysler borrowed $250 million in 1954 from Prudential Insurance to pay for expansion and updated car designs. Chrysler expanded into Europe by taking control of French, British, and Spanish auto companies in the 1960s; Chrysler Europe was sold in 1978 to PSA Peugeot Citroën for $1 billion. The company struggled to adapt to changing markets, increased U.S. import competition, and safety and environmental regulation in the 1970s. It began an engineering partnership with Mitsubishi Motors, and began selling Mitsubishi vehicles branded as Dodge and Plymouth in North America. On the verge of bankruptcy in the late 1970s, it was saved by $1.5 billion in loan guarantees from the U.S. government. New CEO Lee Iacocca was credited with returning the company to profitability in the 1980s. In 1985, Diamond-Star Motors was created, further expanding the Chrysler-Mitsubishi relationship. In 1987, Chrysler acquired American Motors Corporation (AMC), which brought the profitable Jeep, as well as the newly formed Eagle, brands under the Chrysler umbrella. In 1998, Chrysler merged with German automaker Daimler-Benz to form DaimlerChrysler AG; the merger proved contentious with investors. As a result, Chrysler was sold to Cerberus Capital Management and renamed Chrysler LLC in 2007. Like the other Big Three automobile manufacturers, Chrysler was impacted by the automotive industry crisis of 2008–2010. The company remained in business through a combination of negotiations with creditors, filing for Chapter 11 bankruptcy reorganization on April 30, 2009, and participating in a bailout from the U.S. government through the Troubled Asset Relief Program. On June 10, 2009, Chrysler emerged from the bankruptcy proceedings with the United Auto Workers pension fund, Fiat S.p.A., and the U.S. and Canadian governments as principal owners. The bankruptcy resulted in Chrysler defaulting on over $4 billion in debts. In May 2011, Chrysler finished repaying its obligations to the U.S. government five years early, although the cost to the American taxpayer was $1.3 billion. Over the next few years, Fiat S.p.A. gradually acquired the other parties' shares. In January 2014, Fiat acquired the rest of Chrysler from the United Auto Workers retiree health trust, making Chrysler Group a subsidiary of Fiat S.p.A. In May 2014, Fiat Chrysler Automobiles was established by merging Fiat S.p.A. into the company. Chrysler Group LLC remained a subsidiary until December 15, 2014, when it was renamed FCA US LLC, to reflect the Fiat-Chrysler merger.	2001-10-25T12:10:31Z	2023-12-29T15:55:31Z	[ "Template:Infobox company", "Template:Inflation-year", "Template:Citation", "Template:Dead link", "Template:Div col end", "Template:Cite news", "Template:Use mdy dates", "Template:Respell", "Template:Main", "Template:Reflist", "Template:As of", "Template:Flag", "Template:Cite press release", "Template:Chrysler Group LLC", "Template:About", "Template:Refn", "Template:When", "Template:Portal", "Template:Cbignore", "Template:Refbegin", "Template:Inflation-fn", "Template:Citation needed", "Template:Increase", "Template:HAER", "Template:Clear", "Template:Verify source", "Template:Convert", "Template:Cite report", "Template:Commons category", "Template:Navboxes", "Template:Short description", "Template:IPAc-en", "Template:Further", "Template:Cite book", "Template:Cite journal", "Template:Authority control", "Template:Div col", "Template:Cite web", "Template:Cite magazine", "Template:Cite encyclopedia", "Template:Webarchive", "Template:Official website", "Template:Decrease", "Template:Abbr", "Template:See also", "Template:Cite interview", "Template:Refend" ]	https://en.wikipedia.org/wiki/Chrysler
6,883	City of London	The City of London, widely referred to simply as the City, is a city, ceremonial county and local government district that contains the ancient centre, and constitutes, alongside Canary Wharf, the primary central business district (CBD) of London and one of the leading financial centres of the world. It constituted most of London from its settlement by the Romans in the 1st century AD to the Middle Ages, but the modern area referred to as London has since grown far beyond the City of London boundary. The City is now only a small part of the metropolis of Greater London, though it remains a notable part of central London. Administratively, the City of London is not one of the London boroughs, a status reserved for the other 32 districts (including Greater London's only other city, the City of Westminster). It is also a separate ceremonial county, being an enclave surrounded by Greater London, and is the smallest ceremonial county in England. The City of London is known colloquially as the Square Mile, as it is 1.12 sq mi (716.80 acres; 2.90 km) in area. Both the terms the City and the Square Mile are often used as metonyms for the UK's trading and financial services industries, which continue a notable history of being largely based in the City. The name London is now ordinarily used for a far wider area than just the City. London most often denotes the sprawling London metropolis, or the 32 Greater London boroughs, in addition to the City of London itself. The local authority for the City, namely the City of London Corporation, is unique in the UK and has some unusual responsibilities for a local council, such as being the police authority. It is also unusual in having responsibilities and ownerships beyond its boundaries. The corporation is headed by the Lord Mayor of the City of London (an office separate from, and much older than, the Mayor of London). The Lord Mayor, as of November 2023, is Michael Mainelli. The City is made up of 25 wards, with administration at the historic Guildhall. Other historic sites include St Paul's Cathedral, Royal Exchange, Mansion House, Old Bailey, and Smithfield Market. Although not within the City, the adjacent Tower of London, built to dominate the City, is part of its old defensive perimeter. The City has responsibility for five bridges in its capacity as trustee of the Bridge House Estates: Blackfriars Bridge, Millennium Bridge, Southwark Bridge, London Bridge and Tower Bridge. The City is a major business and financial centre, with both the Bank of England and the London Stock Exchange based in the City. Throughout the 19th century, the City was the world's primary business centre, and it continues to be a major meeting point for businesses. London came second (after New York) in the Global Financial Centres Index, published in 2022. The insurance industry is located in the eastern side of the city, around Lloyd's building. Since about the 1980s, a secondary financial district has existed outside the city, at Canary Wharf, 2.5 miles (4 km) to the east. The legal profession forms a major component of the northern and western sides of the City, especially in the Temple and Chancery Lane areas where the Inns of Court are located, of which two—Inner Temple and Middle Temple—fall within the City of London boundary. The City has a resident population of 8,853 as of 2021 but over 500,000 are employed there (as of 2019) and some estimates put the number of workers in the City to be over 1 million. About three-quarters of the jobs in the City of London are in the financial, professional, and associated business services sectors. The Roman legions established a settlement known as "Londinium" on the current site of the City of London around AD 43. Its bridge over the River Thames turned the city into a road nexus and major port, serving as a major commercial centre in Roman Britain until its abandonment during the 5th century. Archaeologist Leslie Wallace notes that, because extensive archaeological excavation has not revealed any signs of a significant pre-Roman presence, "arguments for a purely Roman foundation of London are now common and uncontroversial." At its height, the Roman city had a population of approximately 45,000–60,000 inhabitants. Londinium was an ethnically diverse city, with inhabitants from across the Roman Empire, including natives of Britannia, continental Europe, the Middle East, and North Africa. The Romans built the London Wall some time between AD 190 and 225. The boundaries of the Roman city were similar to those of the City of London today, though the City extends further west than Londinium's Ludgate, and the Thames was undredged and thus wider than it is today, with Londinium's shoreline slightly north of the city's present shoreline. The Romans built a bridge across the river, as early as AD 50, near to today's London Bridge. By the time the London Wall was constructed, the city's fortunes were in decline, and it faced problems of plague and fire. The Roman Empire entered a long period of instability and decline, including the Carausian Revolt in Britain. In the 3rd and 4th centuries, the city was under attack from Picts, Scots, and Saxon raiders. The decline continued, both for Londinium and the Empire, and in AD 410 the Romans withdrew entirely from Britain. Many of the Roman public buildings in Londinium by this time had fallen into decay and disuse, and gradually after the formal withdrawal the city became almost (if not, at times, entirely) uninhabited. The centre of trade and population moved away from the walled Londinium to Lundenwic ("London market"), a settlement to the west, roughly in the modern-day Strand/Aldwych/Covent Garden area. During the Anglo-Saxon Heptarchy, the London area came in turn under the Kingdoms of Essex, Mercia, and later Wessex, though from the mid 8th century it was frequently under threat from raids by different groups including the Vikings. Bede records that in AD 604 St Augustine consecrated Mellitus as the first bishop to the Anglo-Saxon kingdom of the East Saxons and their king, Sæberht. Sæberht's uncle and overlord, Æthelberht, king of Kent, built a church dedicated to St Paul in London, as the seat of the new bishop. It is assumed, although unproven, that this first Anglo-Saxon cathedral stood on the same site as the later medieval and the present cathedrals. Alfred the Great, King of Wessex occupied and began the resettlement of the old Roman walled area, in 886, and appointed his son-in-law Earl Æthelred of Mercia over it as part of their reconquest of the Viking occupied parts of England. The refortified Anglo-Saxon settlement was known as Lundenburh ("London Fort", a borough). The historian Asser said that "Alfred, king of the Anglo-Saxons, restored the city of London splendidly ... and made it habitable once more." Alfred's "restoration" entailed reoccupying and refurbishing the nearly deserted Roman walled city, building quays along the Thames, and laying a new city street plan. Alfred's taking of London and the rebuilding of the old Roman city was a turning point in history, not only as the permanent establishment of the City of London, but also as part of a unifying moment in early England, with Wessex becoming the dominant English kingdom and the repelling (to some degree) of the Viking occupation and raids. While London, and indeed England, were afterwards subjected to further periods of Viking and Danish raids and occupation, the establishment of the City of London and the Kingdom of England prevailed. In the 10th century, Athelstan permitted eight mints to be established, compared with six in his capital, Winchester, indicating the wealth of the city. London Bridge, which had fallen into ruin following the Roman evacuation and abandonment of Londinium, was rebuilt by the Saxons, but was periodically destroyed by Viking raids and storms. As the focus of trade and population was moved back to within the old Roman walls, the older Saxon settlement of Lundenwic was largely abandoned and gained the name of Ealdwic (the "old settlement"). The name survives today as Aldwych (the "old market-place"), a name of a street and an area of the City of Westminster between Westminster and the City of London. Following the Battle of Hastings, William the Conqueror marched on London, reaching as far as Southwark, but failed to get across London Bridge or defeat the Londoners. He eventually crossed the River Thames at Wallingford, pillaging the land as he went. Rather than continuing the war, Edgar the Ætheling, Edwin of Mercia and Morcar of Northumbria surrendered at Berkhamsted. William granted the citizens of London a charter in 1075; the city was one of a few examples of the English retaining some authority. The city was not covered by the Domesday Book. William built three castles around the city, to keep Londoners subdued: About 1130, Henry I granted a sheriff to the people of London, along with control of the county of Middlesex: this meant that the two entities were regarded as one administratively for addressing crime and keeping the peace (not that the county was a dependency of the city) until the Local Government Act 1888. By 1141 the whole body of the citizenry was considered to constitute a single community. This 'commune' was the origin of the City of London Corporation and the citizens gained the right to appoint, with the king's consent, a mayor in 1189—and to directly elect the mayor from 1215. From medieval times, the city has been composed of 25 ancient wards, each headed by an alderman, who chairs Wardmotes, which still take place at least annually. A Folkmoot, for the whole of the City held at the outdoor cross of St Paul's Cathedral, was formerly also held. Many of the medieval offices and traditions continue to the present day, demonstrating the unique nature of the City and its Corporation. In 1381, the Peasants' Revolt affected London. The rebels took the City and the Tower of London, but the rebellion ended after its leader, Wat Tyler, was killed during a confrontation that included Lord Mayor William Walworth. In 1450, rebel forces again occupied the City during Jack Cade's Rebellion before being ousted by London citizens following a bloody battle on London Bridge. In 1550, the area south of London Bridge in Southwark came under the control of the City with the establishment of the ward of Bridge Without. The city was burnt severely on a number of occasions, the worst being in 1123 and in the Great Fire of London in 1666. Both of these fires were referred to as the Great Fire. After the fire of 1666, a number of plans were drawn up to remodel the city and its street pattern into a renaissance-style city with planned urban blocks, squares and boulevards. These plans were almost entirely not taken up, and the medieval street pattern re-emerged almost intact. In the 1630s the Crown sought to have the Corporation of the City of London extend its jurisdiction to surrounding areas. In what is sometimes called the "great refusal", the Corporation said no to the King, which in part accounts for its unique government structure to the present. By the late 16th century, London increasingly became a major centre for banking, international trade and commerce. The Royal Exchange was founded in 1565 by Sir Thomas Gresham as a centre of commerce for London's merchants, and gained Royal patronage in 1571. Although no longer used for its original purpose, its location at the corner of Cornhill and Threadneedle Street continues to be the geographical centre of the city's core of banking and financial services, with the Bank of England moving to its present site in 1734, opposite the Royal Exchange. Immediately to the south of Cornhill, Lombard Street was the location from 1691 of Lloyd's Coffee House, which became the world-leading insurance market. London's insurance sector continues to be based in the area, particularly in Lime Street. In 1708, Christopher Wren's masterpiece, St Paul's Cathedral, was completed on his birthday. The first service had been held on 2 December 1697, more than 10 years earlier. It replaced the original St Paul's, which had been completely destroyed in the Great Fire of London, and is considered to be one of the finest cathedrals in Britain and a fine example of Baroque architecture. The 18th century was a period of rapid growth for London, reflecting an increasing national population, the early stirrings of the Industrial Revolution, and London's role at the centre of the evolving British Empire. The urban area expanded beyond the borders of the City of London, most notably during this period towards the West End and Westminster. Expansion continued and became more rapid by the beginning of the 19th century, with London growing in all directions. To the East the Port of London grew rapidly during the century, with the construction of many docks, needed as the Thames at the City could not cope with the volume of trade. The arrival of the railways and the Tube meant that London could expand over a much greater area. By the mid-19th century, with London still rapidly expanding in population and area, the City had already become only a small part of the wider metropolis. An attempt was made in 1894 with the Royal Commission on the Amalgamation of the City and County of London to end the distinction between the city and the surrounding County of London, but a change of government at Westminster meant the option was not taken up. The city as a distinct polity survived despite its position within the London conurbation and numerous local government reforms. Supporting this status, the city was a special parliamentary borough that elected four members to the unreformed House of Commons, who were retained after the Reform Act 1832; reduced to two under the Redistribution of Seats Act 1885; and ceased to be a separate constituency under the Representation of the People Act 1948. Since then the city is a minority (in terms of population and area) of the Cities of London and Westminster. The city's population fell rapidly in the 19th century and through most of the 20th century, as people moved outwards in all directions to London's vast suburbs, and many residential buildings were demolished to make way for office blocks. Like many areas of London and other British cities, the City fell victim to large scale and highly destructive aerial bombing during World War II, especially in the Blitz. Whilst St Paul's Cathedral survived the onslaught, large swathes of the area did not and the particularly heavy raids of late December 1940 led to a firestorm called the Second Great Fire of London. There was a major rebuilding programme in the decades following the war, in some parts (such as at the Barbican) dramatically altering the urban landscape. But the destruction of the older historic fabric allowed the construction of modern and larger-scale developments, whereas in those parts not so badly affected by bomb damage the City retains its older character of smaller buildings. The street pattern, which is still largely medieval, was altered slightly in places, although there is a more recent trend of reversing some of the post-war modernist changes made, such as at Paternoster Square. The City suffered terrorist attacks including the 1993 Bishopsgate bombing (IRA) and the 7 July 2005 London bombings (Islamist). In response to the 1993 bombing, a system of road barriers, checkpoints and surveillance cameras referred to as the "ring of steel" has been maintained to control entry points to the city. The 1970s saw the construction of tall office buildings including the 600-foot (183 m), 47-storey NatWest Tower, the first skyscraper in the UK. By the 2010s, office space development had intensified in the City, especially in the central, northern and eastern parts, with skyscrapers including 30 St. Mary Axe ("the Gherkin"'), Leadenhall Building ("the Cheesegrater"), 20 Fenchurch Street ("the Walkie-Talkie"), the Broadgate Tower, the Heron Tower and 22 Bishopsgate. The main residential section of the City today is the Barbican Estate, constructed between 1965 and 1976. The Museum of London was based there until March 2023 (due to reopen in West Smithfield in 2026), whilst a number of other services provided by the corporation are still maintained on the Barbican Estate. The city has a unique political status, a legacy of its uninterrupted integrity as a corporate city since the Anglo-Saxon period and its singular relationship with the Crown. Historically its system of government was not unusual, but it was not reformed by the Municipal Corporations Act 1835 and little changed by later reforms, so that it is the only local government in the UK where elections are not run on the basis of one vote for every adult citizen. It is administered by the City of London Corporation, headed by the Lord Mayor of London (not to be confused with the separate Mayor of London, an office created only in the year 2000), which is responsible for a number of functions and has interests in land beyond the city's boundaries. Unlike other English local authorities, the corporation has two council bodies: the (now largely ceremonial) Court of Aldermen and the Court of Common Council. The Court of Aldermen represents the wards, with each ward (irrespective of size) returning one alderman. The chief executive of the Corporation holds the ancient office of Town Clerk of London. The city is a ceremonial county which has a Commission of Lieutenancy headed by the Lord Mayor instead of a Lord-Lieutenant and has two Sheriffs instead of a High Sheriff (see list of Sheriffs of London), quasi-judicial offices appointed by the livery companies, an ancient political system based on the representation and protection of trades (guilds). Senior members of the livery companies are known as liverymen and form the Common Hall, which chooses the lord mayor, the sheriffs and certain other officers. The city is made up of 25 wards. They are survivors of the medieval government system that allowed a very local area to exist as a self-governing unit within the wider city. They can be described as electoral/political divisions; ceremonial, geographic and administrative entities; sub-divisions of the city. Each ward has an Alderman, who until the mid-1960s held office for life but since put themselves up for re-election at least every 6 years, and are the only directly elected Aldermen in the United Kingdom. Wards continue to have a Beadle, an ancient position which is now largely ceremonial whose main remaining function is the running of an annual Wardmote of electors, representatives and officials. At the Wardmote the ward's Alderman appoints at least one Deputy for the year ahead, and Wardmotes are also held during elections. Each ward also has a Ward Club, which is similar to a residents' association. The wards are ancient and their number has changed three times since time immemorial: Following boundary changes in 1994, and later reform of the business vote in the city, there was a major boundary and electoral representation revision of the wards in 2003, and they were reviewed again in 2010 for change in 2013, though not to such a dramatic extent. The review was conducted by senior officers of the corporation and senior judges of the Old Bailey; the wards are reviewed by this process to avoid malapportionment. The procedure of review is unique in the United Kingdom as it is not conducted by the Electoral Commission or a local government boundary commission every 8 to 12 years, which is the case for all other wards in Great Britain. Particular churches, livery company halls and other historic buildings and structures are associated with a ward, such as St Paul's Cathedral with Castle Baynard, and London Bridge with Bridge; boundary changes in 2003 removed some of these historic connections. Each ward elects an alderman to the Court of Aldermen, and commoners (the City equivalent of a councillor) to the Court of Common Council of the corporation. Only electors who are Freemen of the City of London are eligible to stand. The number of commoners a ward sends to the Common Council varies from two to ten, depending on the number of electors in each ward. Since the 2003 review it has been agreed that the four more residential wards: Portsoken, Queenhithe, Aldersgate and Cripplegate together elect 20 of the 100 commoners, whereas the business-dominated remainder elect the remaining 80 commoners. 2003 and 2013 boundary changes have increased the residential emphasis of the mentioned four wards. Census data provides eight nominal rather than 25 real wards, all of varying size and population. Being subject to renaming and definition at any time, these census 'wards' are notable in that four of the eight wards accounted for 67% of the 'square mile' and held 86% of the population, and these were in fact similar to and named after four City of London wards: The city has a unique electoral system. Most of its voters are representatives of businesses and other bodies that occupy premises in the city. Its ancient wards have very unequal numbers of voters. In elections, both the businesses based in the city and the residents of the City vote. The City of London Corporation was not reformed by the Municipal Corporations Act 1835, because it had a more extensive electoral franchise than any other borough or city; in fact, it widened this further with its own equivalent legislation allowing one to become a freeman without being a liveryman. In 1801, the city had a population of about 130,000, but increasing development of the city as a central business district led to this falling to below 5,000 after the Second World War. It has risen slightly to around 9,000 since, largely due to the development of the Barbican Estate. In 2009, the business vote was about 24,000, greatly exceeding residential voters. As the City of London Corporation has not been affected by other municipal legislation over the period of time since then, its electoral practice has become increasingly anomalous. Uniquely for city or borough elections, its elections remain independent-dominated. The business or "non-residential vote" was abolished in other UK local council elections by the Representation of the People Act 1969, but was preserved in the City of London. The principal reason given by successive UK governments for retaining this mechanism for giving businesses representation, is that the city is "primarily a place for doing business". About 330,000 non-residents constitute the day-time population and use most of its services, far outnumbering residents, who number around 7,000 (2011). By contrast, opponents of the retention of the business vote argue that it is a cause of institutional inertia. The City of London (Ward Elections) Act 2002, a private Act of Parliament, reformed the voting system and greatly increased the business franchise, allowing many more businesses to be represented. Under the new system, the number of non-resident voters has doubled from 16,000 to 32,000. Previously disenfranchised firms (and other organisations) are entitled to nominate voters, in addition to those already represented, and all such bodies are now required to choose their voters in a representative fashion. Bodies employing fewer than 10 people may appoint 1 voter; those employing 10 to 50 people 1 voter for every 5 employees; those employing more than 50 people 10 voters and 1 additional voter for each 50 employees beyond the first 50. The Act also removed other anomalies which had been unchanged since the 1850s. Inner Temple and Middle Temple (which neighbour each other) in the western ward of Farringdon Without are within the boundaries and liberties of the City, but can be thought of as independent enclaves. They are two of the few remaining liberties, an old name for a geographic division with special rights. They are extra-parochial areas, historically not governed by the City of London Corporation (and are today regarded as local authorities for most purposes) and equally outside the ecclesiastical jurisdiction of the Bishop of London. Within the city, the Corporation owns and runs both Smithfield Market and Leadenhall Market. It owns land beyond its boundaries, including open spaces (parks, forests and commons) in and around Greater London, including most of Epping Forest and Hampstead Heath. The Corporation owns Old Spitalfields Market and Billingsgate Fish Market, in the neighbouring London Borough of Tower Hamlets. It owns and helps fund the Old Bailey, the Central Criminal Court for England and Wales, as a gift to the nation, having begun as the City and Middlesex Sessions. The Honourable The Irish Society, a body closely linked with the corporation, also owns many public spaces in Northern Ireland. The city has its own independent police force, the City of London Police—the Common Council (the main body of the corporation) is the police authority. The corporation also run the Hampstead Heath Constabulary, Epping Forest Keepers and the City of London market constabularies (whose members are no longer attested as constables but retain the historic title). The majority of Greater London is policed by the Metropolitan Police Service, based at New Scotland Yard. The city has one hospital, St Bartholomew's Hospital, also known as 'Barts'. Founded in 1123, it is located at Smithfield, and is undergoing a long-awaited regeneration after doubts as to its continuing use during the 1990s. The city is the third largest UK patron of the arts. It oversees the Barbican Centre and subsidises several important performing arts companies. The London Port Health Authority, which is the responsibility of the corporation, is responsible for all port health functions on the tidal part of the Thames, including various seaports and London City Airport. The Corporation oversees the Bridge House Estates, which maintains Blackfriars Bridge, Millennium Bridge, Southwark Bridge, London Bridge and Tower Bridge. The City's flag flies over Tower Bridge, although neither footing is in the city. The size of the city was constrained by a defensive perimeter wall, known as London Wall, which was built by the Romans in the late 2nd century to protect their strategic port city. However the boundaries of the City of London no longer coincide with the old city wall, as the City expanded its jurisdiction slightly over time. During the medieval era, the city's jurisdiction expanded westwards, crossing the historic western border of the original settlement—the River Fleet—along Fleet Street to Temple Bar. The city also took in the other "City bars" which were situated just beyond the old walled area, such as at Holborn, Aldersgate, West Smithfield, Bishopsgate and Aldgate. These were the important entrances to the city and their control was vital in maintaining the city's special privileges over certain trades. Most of the wall has disappeared, but several sections remain visible. A section near the Museum of London was revealed after the devastation of an air raid on 29 December 1940 at the height of the Blitz. Other visible sections are at St Alphage, and there are two sections near the Tower of London. The River Fleet was canalised after the Great Fire of 1666 and then in stages was bricked up and has been since the 18th century one of London's "lost rivers or streams", today underground as a storm drain. The boundary of the city was unchanged until minor boundary changes on 1 April 1994, when it expanded slightly to the west, north and east, taking small parcels of land from the London Boroughs of Westminster, Camden, Islington, Hackney and Tower Hamlets. The main purpose of these changes was to tidy up the boundary where it had been rendered obsolete by changes in the urban landscape. In this process the city also lost small parcels of land, though there was an overall net gain (the City grew from 1.05 to 1.12 square miles). Most notably, the changes placed the (then recently developed) Broadgate estate entirely in the city. Southwark, to the south of the city on the other side of the Thames, was within the City between 1550 and 1899 as the Ward of Bridge Without, a situation connected with the Guildable Manor. The city's administrative responsibility there had in practice disappeared by the mid-Victorian period as various aspects of metropolitan government were extended into the neighbouring areas. Today it is part of the London Borough of Southwark. The Tower of London has always been outside the city and comes under the London Borough of Tower Hamlets. The Corporation of the City of London has a full achievement of armorial bearings consisting of a shield on which the arms are displayed, a crest displayed on a helm above the shield, supporters on either side and a motto displayed on a scroll beneath the arms. The coat of arms is "anciently recorded" at the College of Arms. The arms consist of a silver shield bearing a red cross with a red upright sword in the first quarter. They combine the emblems of the patron saints of England and London: the Cross of St George with the symbol of the martyrdom of Saint Paul. The sword is often erroneously supposed to commemorate the killing of Peasants' Revolt leader Wat Tyler by Lord Mayor of London William Walworth. However the arms were in use some months before Tyler's death, and the tradition that Walworth's dagger is depicted may date from the late 17th century. The Latin motto of the city is "Domine dirige nos", which translates as "Lord, direct us". It is thought to have been adopted in the 17th century, as the earliest record of it is in 1633. A banner of the arms (the design on the shield) is flown as a flag. The City of London is the smallest ceremonial county of England by area and population, and the fourth most densely populated. Of the 326 English districts, it is the second smallest by population, after the Isles of Scilly, and the smallest by area. It is also the smallest English city by population (and in Britain, only two cities in Wales are smaller), and the smallest in the UK by area. The elevation of the City ranges from sea level at the Thames to 21.6 metres (71 ft) at the junction of High Holborn and Chancery Lane. Two small but notable hills are within the historic core, Ludgate Hill to the west and Cornhill to the east. Between them ran the Walbrook, one of the many "lost" rivers or streams of London (another is the Fleet). Beginning in the west, where the City borders Westminster, the boundary crosses the Victoria Embankment from the Thames, passes to the west of Middle Temple, then turns for a short distance along Strand and near Temple Bar then north up Chancery Lane, where it borders Camden. It turns east along Holborn to Holborn Circus and then goes northeast to Charterhouse Street. As it crosses Farringdon Road it becomes the boundary with Islington. It continues to Aldersgate, goes north, and turns east into some back streets soon after Aldersgate becomes Goswell Road, since 1994 embracing all of the corporation's Golden Lane Estate. Here, at Baltic Street West, is the most northerly extent. The boundary includes all of the Barbican Estate and continues east along Ropemaker Street and its continuation on the other side of Moorgate, becomes South Place. It goes north, reaching the border with Hackney, then east, north, east on back streets, with Worship Street forming a northern boundary, so as to include the Broadgate estate. The boundary then turns south at Norton Folgate and becomes the border with Tower Hamlets. It continues south into Bishopsgate, and takes some backstreets to Middlesex Street (Petticoat Lane) where it continues south-east then south. It then turns south-west, crossing the Minories so as to exclude the Tower of London, and then reaches the river. It then runs up the centre of the Thames, with the exception that Blackfriars Bridge falls within the city; the City controls London Bridge (as part of Bridge ward) but only half of the river underneath it. The boundaries are marked by black bollards bearing the city's emblem, and by dragon boundary marks at major entrances, such as Holborn. A more substantial monument marks the boundary at Temple Bar on Fleet Street. In some places, the financial district extends slightly beyond the boundaries, notably to the north and east, into the London boroughs of Tower Hamlets, Hackney and Islington, and informally these locations are seen as part of the "Square Mile". Since the 1990s the eastern fringe, extending into Hackney and Tower Hamlets, has increasingly been a focus for large office developments due to the availability of large sites compared to within the city. The city has no sizeable parks within its boundary, but does have a network of a large number of gardens and small open spaces, many of them maintained by the corporation. These range from formal gardens such as the one in Finsbury Circus, containing a bowling green and bandstand, to churchyards such as St Olave Hart Street, to water features and artwork in courtyards and pedestrianised lanes. Gardens include: There are a number of private gardens and open spaces, often within courtyards of the larger commercial developments. Two of the largest are those of the Inner Temple and Middle Temple Inns of Court, in the far southwest. The Thames and its riverside walks are increasingly being valued as open space and in recent years efforts have been made to increase the ability for pedestrians to access and walk along the river. The nearest weather station has historically been the London Weather Centre at Kingsway/ Holborn, although observations ceased in 2010. Now St. James Park provides the nearest official readings. The city has an oceanic climate (Köppen "Cfb") modified by the Urban Heat Island in the centre of London. This generally causes higher night-time minima than outlying areas. For example, the August mean minimum of 14.7 °C (58.5 °F) compares to a figure of 13.3 °C (55.9 °F) for Greenwich and Heathrow whereas is 11.6 °C (52.9 °F) at Wisley in the middle of several square miles of Metropolitan Green Belt. All figures refer to the observation period 1971–2000. Accordingly, the weather station holds the record for the UK's warmest overnight minimum temperature, 24.0 °C (75.2 °F), recorded on 4 August 1990. The maximum is 37.6 °C (99.7 °F), set on 10 August 2003. The absolute minimum for the weather station is a mere −8.2 °C (17.2 °F), compared to readings around −15.0 °C (5.0 °F) towards the edges of London. Unusually, this temperature was during a windy and snowy cold spell (mid-January 1987), rather than a cold clear night—cold air drainage is arrested due to the vast urban area surrounding the city. The station holds the record for the highest British mean monthly temperature, 24.5 °C (76.1 °F) (mean maximum 29.2 °C (84.6 °F), mean minimum 19.7 °C (67.5 °F) during July 2006). However, in terms of daytime maximum temperatures, Cambridge NIAB and Botanical Gardens with a mean maximum of 29.1 °C (84.4 °F), and Heathrow with 29.0 °C (84.2 °F) all exceeded this. The city is a police area and has its own police force, the City of London Police, separate from the Metropolitan Police Service covering the majority of Greater London. The City Police have three police stations, at Snow Hill, Wood Street and Bishopsgate, and an administrative headquarters at Guildhall Yard East. The force comprises 735 police officers including 273 detectives. It is the smallest territorial police force in England and Wales, in both geographic area and the number of police officers. Where the majority of British police forces have silver-coloured badges, those of the City of London Police are black and gold featuring the City crest. The force has rare red and white chequered cap bands and unique red and white striped duty arm bands on the sleeves of the tunics of constables and sergeants (red and white being the colours of the city), which in most other British police forces are black and white. City police sergeants and constables wear crested custodian helmets whilst on foot patrol. These helmets do not feature either St Edward's Crown or the Brunswick Star, which are used on most other police helmets in England and Wales. The city's position as the United Kingdom's financial centre and a critical part of the country's economy, contributing about 2.5% of the UK's gross national product, has resulted in it becoming a target for political violence. The Provisional IRA exploded several bombs in the early 1990s, including the 1993 Bishopsgate bombing. The area is also spoken of as a possible target for al-Qaeda. For instance, when in May 2004 the BBC's Panorama programme examined the preparedness of Britain's emergency services for a terrorist attack on the scale of the 11 September 2001 attacks, they simulated a chemical explosion on Bishopsgate in the east of the city. The "Ring of Steel" was established in the wake of the IRA bombings to guard against terrorist threats. The city has fire risks in many historic buildings, including St Paul's Cathedral, Old Bailey, Mansion House, Smithfield Market, the Guildhall, and also in numerous high-rise buildings. There is one London Fire Brigade station in the city, at Dowgate, with one pumping appliance. The City relies upon stations in the surrounding London boroughs to support it at some incidents. The first fire engine is in attendance in roughly five minutes on average, the second when required in a little over five and a half minutes. There were 1,814 incidents attended in the City in 2006/2007—the lowest in Greater London. No-one died in an event arising from a fire in the four years prior to 2007. There is power station located in Charterhouse Street that also provides heat to some of the surrounding buildings. The Office for National Statistics recorded the population in 2011 as 7,375; slightly higher than in the previous census, 2001, and estimates the population as at mid-2016 to be 9,401. At the 2001 census the ethnic composition was 84.6% White, 6.8% South Asian, 2.6% Black, 2.3% Mixed, 2.0% Chinese and 1.7% were listed as "other". To the right is a table showing the change in population since 1801, based on decadal censuses. The first half of the 19th century shows a population of between 120,000 and 140,000, decreasing dramatically from 1851 to 1991, with a small increase between 1991 and 2001. The only notable boundary change since the first census in 1801 occurred in 1994. The city's full-time working residents have much higher gross weekly pay than in London and Great Britain (England, Wales and Scotland): £773.30 compared to £598.60 and £491.00 respectively. There is a large inequality of income between genders (£1,085.90 in men compared to £653.50 in women), though this can be explained by job type and length of employment respectively. The 2001 Census showed the city as a unique district amongst 376 districts surveyed in England and Wales. The city had the highest proportional population increase, one-person households, people with qualifications at degree level or higher and the highest indications of overcrowding. It recorded the lowest proportion of households with cars or vans, people who travel to work by car, married couple households and the lowest average household size: just 1.58 people. It also ranked highest within the Greater London area for the percentage of people with no religion and people who are employed. The City of London vies with New York City's Downtown Manhattan as the financial capital of the world. The London Stock Exchange (shares and bonds), Lloyd's of London (insurance) and the Bank of England are all based in the city. Over 500 banks have offices in the city. The Alternative Investment Market, a market for trades in equities of smaller firms, is a recent development. In 2009, the City of London accounted for 2.4% of UK GDP. London's foreign exchange market has been described by Reuters as 'the crown jewel of London's financial sector'. Of the $3.98 trillion daily global turnover, as measured in 2009, trading in London accounted for around $1.85 trillion, or 46.7% of the total. The pound sterling, the currency of the United Kingdom, is globally the fourth-most traded currency and the fourth most held reserve currency. Canary Wharf, a few miles east of the City in Tower Hamlets, which houses many banks and other institutions formerly located in the Square Mile, has since 1991 become another centre for London's financial services industry. Although growth has continued in both locations, and there have been relocations in both directions, the Corporation has come to realise that its planning policies may have been causing financial firms to choose Canary Wharf as a location. In 2022, 12.3% of City of London residents had been granted non-domicile status in order to avoid their paying tax in the UK. Many major global companies have their headquarters in the city, including Aviva, BT Group, Lloyds Banking Group, Quilter, Prudential, Schroders, Standard Chartered, and Unilever. A number of the world's largest law firms are headquartered in the city, including four of the "Magic Circle" law firms (Allen & Overy, Freshfields Bruckhaus Deringer, Linklaters and Slaughter & May), as well as other firms such as Ashurst LLP, DLA Piper, Eversheds Sutherland, Herbert Smith Freehills and Hogan Lovells. Whilst the financial sector, and related businesses and institutions, continue to dominate, the economy is not limited to that sector. The legal profession has a strong presence, especially in the west and north (i.e., towards the Inns of Court). Retail businesses were once important, but have gradually moved to the West End of London, though it is now Corporation policy to encourage retailing in some locations, for example at Cheapside near St Paul's. The city has a number of visitor attractions, mainly based on its historic heritage as well as the Barbican Centre and adjacent Museum of London, though tourism is not at present a major contributor to the city's economy or character. The city has many pubs, bars and restaurants, and the "night-time" economy does feature in the Bishopsgate area, towards Shoreditch. The meat market at Smithfield, wholly within the city, continues to be one of London's main markets (the only one remaining in central London) and the country's largest meat market. In the east is Leadenhall Market, a fresh food market that is also a visitor attraction. The trend for purely office development is beginning to reverse as the Corporation encourages residential use, albeit with development occurring when it arises on windfall sites. The city has a target of 90 additional dwellings per year. Some of the extra accommodation is in small pre-World War II listed buildings, which are not suitable for occupation by the large companies which now provide much of the city's employment. Recent residential developments include "the Heron", a high-rise residential building on the Milton Court site adjacent to the Barbican, and the Heron Plaza development on Bishopsgate is also expected to include residential parts. Since the 1990s, the City has diversified away from near exclusive office use in other ways. For example, several hotels and the first department store opened in the 2000s. A shopping centre was more recently opened at One New Change, Cheapside (near St Paul's Cathedral) in October 2010, which is open seven days a week. However, large sections remain quiet at weekends, especially in the eastern section, and it is quite common to find shops, pubs and cafes closed on these days. Fire, bombing and post-World War II redevelopment have meant that the city, despite its history, has fewer intact historic structures than one might expect. Nonetheless, there remain many dozens of (mostly Victorian and Edwardian) fine buildings, typically in historicist and neoclassical style. They include the Monument to the Great Fire of London ("the Monument"), St Paul's Cathedral, the Guildhall, the Royal Exchange, Dr. Johnson's House, Mansion House and a great many churches, many designed by Sir Christopher Wren, who also designed St Paul's. Prince Henry's Room and 2 King's Bench Walk are notable historic survivors of heavy bombing of the Temple area, which has largely been rebuilt to its historic form. Another example of a bomb-damaged place having been restored is Staple Inn on Holborn. A few small sections of the Roman London Wall exist, for example near the Tower of London and in the Barbican area. Among the twentieth-century listed buildings are Bracken House, the first post World War II buildings in the country to be given statutory protection, and the whole of the Barbican and Golden Lane Estate. The Tower of London is not in the city, but is a notable visitor attraction which brings tourists to the southeast of the city. Other landmark buildings with historical significance include the Bank of England, the Old Bailey, the Custom House, Smithfield Market, Leadenhall Market and St Bartholomew's Hospital. Noteworthy contemporary buildings include a number of modern high-rise buildings (see section below) as well as the Lloyd's building. A growing number of tall buildings and skyscrapers are principally used by the financial sector. Almost all are situated in the eastern side around Bishopsgate, Leadenhall Street and Fenchurch Street, in the financial core of the city. In the north there is a smaller cluster comprising the Barbican Estate's three tall residential towers and the commercial CityPoint tower. In 2007, the 100 m (328 ft) tall Drapers' Gardens building was demolished and replaced by a shorter tower. The city's buildings of at least 100 m (328 ft) in height are: The timeline of the tallest building in the city is as follows: The city is well served by the London Underground ("tube") and National Rail networks. Seven London Underground lines serve the city: Aldgate East ( ), Chancery Lane (), Farringdon ( ), Temple ( ) and Tower Hill ( ) tube stations are all situated within metres of the City of London boundary. The Docklands Light Railway (DLR ) has two termini in the city: Bank and Tower Gateway. The DLR links the City directly to the East End. Destinations include Canary Wharf and London City Airport. The Elizabeth line (constructed by the Crossrail project) runs east–west underneath the City of London. The line serves two stations in the City – Farringdon and Liverpool Street – which additionally serves the Barbican and Moorgate areas. Elizabeth line services link the City directly to destinations such as Canary Wharf, Heathrow Airport, and the M4 Corridor high-technology hub (serving Slough and Reading). The city is served by a frequent Thameslink rail service which runs north–south through London. Thameslink services call at Farringdon, City Thameslink, and London Blackfriars. This provides the city with a direct link to key destinations across London, including Elephant & Castle, London Bridge, and St Pancras International (for the Eurostar to mainland Europe). There are also regular, direct trains from these stations to major destinations across East Anglia and the South East, including Bedford, Brighton, Cambridge, Gatwick Airport, Luton Airport, and Peterborough. There are several "London Terminals" in the city: All stations in the city are in London fare zone 1. The national A1, A10 A3, A4, and A40 road routes begin in the city. The city is in the London congestion charge zone, with the small exception on the eastern boundary of the sections of the A1210/A1211 that are part of the Inner Ring Road. The following bridges, listed west to east (downstream), cross the River Thames: Blackfriars Bridge, Blackfriars Railway Bridge, Millennium Bridge (footbridge), Southwark Bridge, Cannon Street Railway Bridge and London Bridge; Tower Bridge is not in the city. The city, like most of central London, is well served by buses, including night buses. Two bus stations are in the city, at Aldgate on the eastern boundary with Tower Hamlets, and at Liverpool Street by the railway station. However although the London Road Traffic Act 1924 removed from existing local authorities the powers to prevent the development of road passengers transport services within the London Metropolitan Area, the City of London retained most such powers. As a consequence, neither Trolleybus nor Green Line Coach services were permitted to enter the City to pick up or set down passengers. Hence the building of Aldgate (Minories) Trolleybus and Coach station as well as the complex terminal arrangements at Parliament Hill Fields. This restriction was removed by the Transport Act 1985 Cycling infrastructure in the city is maintained by the City of London Corporation and Transport for London (TfL). The Sandander Cycles and Beryl bike sharing systems operate in the City of London. One London River Services pier is on the Thames in the city, Blackfriars Millennium Pier, though the Tower Millennium Pier lies adjacent to the boundary near the Tower of London. One of the Port of London's 25 safeguarded wharves, Walbrook Wharf, is adjacent to Cannon Street station, and is used by the corporation to transfer waste via the river. Swan Lane Pier, just upstream of London Bridge, is proposed to be replaced and upgraded for regular passenger services, planned to take place in 2012–2015. Before then, Tower Pier is to be extended. There is a public riverside walk along the river bank, opened in stages over recent years. The only section not running along the river is a short stretch at Queenhithe. The walk along Walbrook Wharf is closed to pedestrians when waste is being transferred onto barges. According to a survey conducted in March 2011, the methods by which employed residents 16–74 get to work varied widely: 48.4% go on foot; 19.5% via light rail, (i.e. the Underground, DLR, etc.); 9.2% work mainly from home; 5.8% take the train; 5.6% travel by bus, minibus, or coach; and 5.3% go by bicycle; with just 3.4% commuting by car or van, as driver or passenger. The city is home to a number of higher education institutions including: the Guildhall School of Music and Drama, the Cass Business School, The London Institute of Banking & Finance and parts of three of the universities in London: the Maughan Library of King's College London on Chancery Lane, the business school of London Metropolitan University, and a campus of the University of Chicago Booth School of Business. The College of Law has its London campus in Moorgate. Part of Barts and The London School of Medicine and Dentistry is on the Barts hospital site at West Smithfield. The city has only one directly maintained primary school, The Aldgate School (formerly Sir John Cass's Foundation Primary School) at Aldgate (ages 4 to 11). It is a Voluntary-Aided (VA) Church of England school, maintained by the Education Service of the City of London. City residents send their children to schools in neighbouring Local Education Authorities, such as Islington, Tower Hamlets, Westminster and Southwark. The City controls three independent schools, City of London School (a boys' school) and City of London School for Girls in the city, and the City of London Freemen's School (co-educational day and boarding) in Ashtead, Surrey. The City of London School for Girls and City of London Freemen's School have their own preparatory departments for entrance at age seven. It is the principal sponsor of The City Academy, Hackney, City of London Academy Islington, and City of London Academy, Southwark. Libraries operated by the Corporation include three lending libraries; Barbican Library, Shoe Lane Library and Artizan Street Library and Community Centre. Membership is open to all – with one official proof of address required to join. Guildhall Library, and City Business Library are also public reference libraries, specialising in the history of London and business reference resources. 102.^"Chancery Lane". . short waking distance from famous Hatton Garden.	[ { "paragraph_id": 0, "text": "The City of London, widely referred to simply as the City, is a city, ceremonial county and local government district that contains the ancient centre, and constitutes, alongside Canary Wharf, the primary central business district (CBD) of London and one of the leading financial centres of the world. It constituted most of London from its settlement by the Romans in the 1st century AD to the Middle Ages, but the modern area referred to as London has since grown far beyond the City of London boundary. The City is now only a small part of the metropolis of Greater London, though it remains a notable part of central London. Administratively, the City of London is not one of the London boroughs, a status reserved for the other 32 districts (including Greater London's only other city, the City of Westminster). It is also a separate ceremonial county, being an enclave surrounded by Greater London, and is the smallest ceremonial county in England.", "title": "" }, { "paragraph_id": 1, "text": "The City of London is known colloquially as the Square Mile, as it is 1.12 sq mi (716.80 acres; 2.90 km) in area. Both the terms the City and the Square Mile are often used as metonyms for the UK's trading and financial services industries, which continue a notable history of being largely based in the City. The name London is now ordinarily used for a far wider area than just the City. London most often denotes the sprawling London metropolis, or the 32 Greater London boroughs, in addition to the City of London itself.", "title": "" }, { "paragraph_id": 2, "text": "The local authority for the City, namely the City of London Corporation, is unique in the UK and has some unusual responsibilities for a local council, such as being the police authority. It is also unusual in having responsibilities and ownerships beyond its boundaries. The corporation is headed by the Lord Mayor of the City of London (an office separate from, and much older than, the Mayor of London). The Lord Mayor, as of November 2023, is Michael Mainelli. The City is made up of 25 wards, with administration at the historic Guildhall. Other historic sites include St Paul's Cathedral, Royal Exchange, Mansion House, Old Bailey, and Smithfield Market. Although not within the City, the adjacent Tower of London, built to dominate the City, is part of its old defensive perimeter. The City has responsibility for five bridges in its capacity as trustee of the Bridge House Estates: Blackfriars Bridge, Millennium Bridge, Southwark Bridge, London Bridge and Tower Bridge.", "title": "" }, { "paragraph_id": 3, "text": "The City is a major business and financial centre, with both the Bank of England and the London Stock Exchange based in the City. Throughout the 19th century, the City was the world's primary business centre, and it continues to be a major meeting point for businesses. London came second (after New York) in the Global Financial Centres Index, published in 2022. The insurance industry is located in the eastern side of the city, around Lloyd's building. Since about the 1980s, a secondary financial district has existed outside the city, at Canary Wharf, 2.5 miles (4 km) to the east. The legal profession forms a major component of the northern and western sides of the City, especially in the Temple and Chancery Lane areas where the Inns of Court are located, of which two—Inner Temple and Middle Temple—fall within the City of London boundary.", "title": "" }, { "paragraph_id": 4, "text": "The City has a resident population of 8,853 as of 2021 but over 500,000 are employed there (as of 2019) and some estimates put the number of workers in the City to be over 1 million. About three-quarters of the jobs in the City of London are in the financial, professional, and associated business services sectors.", "title": "" }, { "paragraph_id": 5, "text": "The Roman legions established a settlement known as \"Londinium\" on the current site of the City of London around AD 43. Its bridge over the River Thames turned the city into a road nexus and major port, serving as a major commercial centre in Roman Britain until its abandonment during the 5th century. Archaeologist Leslie Wallace notes that, because extensive archaeological excavation has not revealed any signs of a significant pre-Roman presence, \"arguments for a purely Roman foundation of London are now common and uncontroversial.\"", "title": "History" }, { "paragraph_id": 6, "text": "At its height, the Roman city had a population of approximately 45,000–60,000 inhabitants. Londinium was an ethnically diverse city, with inhabitants from across the Roman Empire, including natives of Britannia, continental Europe, the Middle East, and North Africa. The Romans built the London Wall some time between AD 190 and 225. The boundaries of the Roman city were similar to those of the City of London today, though the City extends further west than Londinium's Ludgate, and the Thames was undredged and thus wider than it is today, with Londinium's shoreline slightly north of the city's present shoreline. The Romans built a bridge across the river, as early as AD 50, near to today's London Bridge.", "title": "History" }, { "paragraph_id": 7, "text": "By the time the London Wall was constructed, the city's fortunes were in decline, and it faced problems of plague and fire. The Roman Empire entered a long period of instability and decline, including the Carausian Revolt in Britain. In the 3rd and 4th centuries, the city was under attack from Picts, Scots, and Saxon raiders. The decline continued, both for Londinium and the Empire, and in AD 410 the Romans withdrew entirely from Britain. Many of the Roman public buildings in Londinium by this time had fallen into decay and disuse, and gradually after the formal withdrawal the city became almost (if not, at times, entirely) uninhabited. The centre of trade and population moved away from the walled Londinium to Lundenwic (\"London market\"), a settlement to the west, roughly in the modern-day Strand/Aldwych/Covent Garden area.", "title": "History" }, { "paragraph_id": 8, "text": "During the Anglo-Saxon Heptarchy, the London area came in turn under the Kingdoms of Essex, Mercia, and later Wessex, though from the mid 8th century it was frequently under threat from raids by different groups including the Vikings.", "title": "History" }, { "paragraph_id": 9, "text": "Bede records that in AD 604 St Augustine consecrated Mellitus as the first bishop to the Anglo-Saxon kingdom of the East Saxons and their king, Sæberht. Sæberht's uncle and overlord, Æthelberht, king of Kent, built a church dedicated to St Paul in London, as the seat of the new bishop. It is assumed, although unproven, that this first Anglo-Saxon cathedral stood on the same site as the later medieval and the present cathedrals.", "title": "History" }, { "paragraph_id": 10, "text": "Alfred the Great, King of Wessex occupied and began the resettlement of the old Roman walled area, in 886, and appointed his son-in-law Earl Æthelred of Mercia over it as part of their reconquest of the Viking occupied parts of England. The refortified Anglo-Saxon settlement was known as Lundenburh (\"London Fort\", a borough). The historian Asser said that \"Alfred, king of the Anglo-Saxons, restored the city of London splendidly ... and made it habitable once more.\" Alfred's \"restoration\" entailed reoccupying and refurbishing the nearly deserted Roman walled city, building quays along the Thames, and laying a new city street plan.", "title": "History" }, { "paragraph_id": 11, "text": "Alfred's taking of London and the rebuilding of the old Roman city was a turning point in history, not only as the permanent establishment of the City of London, but also as part of a unifying moment in early England, with Wessex becoming the dominant English kingdom and the repelling (to some degree) of the Viking occupation and raids. While London, and indeed England, were afterwards subjected to further periods of Viking and Danish raids and occupation, the establishment of the City of London and the Kingdom of England prevailed.", "title": "History" }, { "paragraph_id": 12, "text": "In the 10th century, Athelstan permitted eight mints to be established, compared with six in his capital, Winchester, indicating the wealth of the city. London Bridge, which had fallen into ruin following the Roman evacuation and abandonment of Londinium, was rebuilt by the Saxons, but was periodically destroyed by Viking raids and storms.", "title": "History" }, { "paragraph_id": 13, "text": "As the focus of trade and population was moved back to within the old Roman walls, the older Saxon settlement of Lundenwic was largely abandoned and gained the name of Ealdwic (the \"old settlement\"). The name survives today as Aldwych (the \"old market-place\"), a name of a street and an area of the City of Westminster between Westminster and the City of London.", "title": "History" }, { "paragraph_id": 14, "text": "Following the Battle of Hastings, William the Conqueror marched on London, reaching as far as Southwark, but failed to get across London Bridge or defeat the Londoners. He eventually crossed the River Thames at Wallingford, pillaging the land as he went. Rather than continuing the war, Edgar the Ætheling, Edwin of Mercia and Morcar of Northumbria surrendered at Berkhamsted. William granted the citizens of London a charter in 1075; the city was one of a few examples of the English retaining some authority. The city was not covered by the Domesday Book.", "title": "History" }, { "paragraph_id": 15, "text": "William built three castles around the city, to keep Londoners subdued:", "title": "History" }, { "paragraph_id": 16, "text": "About 1130, Henry I granted a sheriff to the people of London, along with control of the county of Middlesex: this meant that the two entities were regarded as one administratively for addressing crime and keeping the peace (not that the county was a dependency of the city) until the Local Government Act 1888. By 1141 the whole body of the citizenry was considered to constitute a single community. This 'commune' was the origin of the City of London Corporation and the citizens gained the right to appoint, with the king's consent, a mayor in 1189—and to directly elect the mayor from 1215.", "title": "History" }, { "paragraph_id": 17, "text": "From medieval times, the city has been composed of 25 ancient wards, each headed by an alderman, who chairs Wardmotes, which still take place at least annually. A Folkmoot, for the whole of the City held at the outdoor cross of St Paul's Cathedral, was formerly also held. Many of the medieval offices and traditions continue to the present day, demonstrating the unique nature of the City and its Corporation.", "title": "History" }, { "paragraph_id": 18, "text": "In 1381, the Peasants' Revolt affected London. The rebels took the City and the Tower of London, but the rebellion ended after its leader, Wat Tyler, was killed during a confrontation that included Lord Mayor William Walworth. In 1450, rebel forces again occupied the City during Jack Cade's Rebellion before being ousted by London citizens following a bloody battle on London Bridge. In 1550, the area south of London Bridge in Southwark came under the control of the City with the establishment of the ward of Bridge Without.", "title": "History" }, { "paragraph_id": 19, "text": "The city was burnt severely on a number of occasions, the worst being in 1123 and in the Great Fire of London in 1666. Both of these fires were referred to as the Great Fire. After the fire of 1666, a number of plans were drawn up to remodel the city and its street pattern into a renaissance-style city with planned urban blocks, squares and boulevards. These plans were almost entirely not taken up, and the medieval street pattern re-emerged almost intact.", "title": "History" }, { "paragraph_id": 20, "text": "In the 1630s the Crown sought to have the Corporation of the City of London extend its jurisdiction to surrounding areas. In what is sometimes called the \"great refusal\", the Corporation said no to the King, which in part accounts for its unique government structure to the present.", "title": "History" }, { "paragraph_id": 21, "text": "By the late 16th century, London increasingly became a major centre for banking, international trade and commerce. The Royal Exchange was founded in 1565 by Sir Thomas Gresham as a centre of commerce for London's merchants, and gained Royal patronage in 1571. Although no longer used for its original purpose, its location at the corner of Cornhill and Threadneedle Street continues to be the geographical centre of the city's core of banking and financial services, with the Bank of England moving to its present site in 1734, opposite the Royal Exchange. Immediately to the south of Cornhill, Lombard Street was the location from 1691 of Lloyd's Coffee House, which became the world-leading insurance market. London's insurance sector continues to be based in the area, particularly in Lime Street.", "title": "History" }, { "paragraph_id": 22, "text": "In 1708, Christopher Wren's masterpiece, St Paul's Cathedral, was completed on his birthday. The first service had been held on 2 December 1697, more than 10 years earlier. It replaced the original St Paul's, which had been completely destroyed in the Great Fire of London, and is considered to be one of the finest cathedrals in Britain and a fine example of Baroque architecture.", "title": "History" }, { "paragraph_id": 23, "text": "The 18th century was a period of rapid growth for London, reflecting an increasing national population, the early stirrings of the Industrial Revolution, and London's role at the centre of the evolving British Empire. The urban area expanded beyond the borders of the City of London, most notably during this period towards the West End and Westminster.", "title": "History" }, { "paragraph_id": 24, "text": "Expansion continued and became more rapid by the beginning of the 19th century, with London growing in all directions. To the East the Port of London grew rapidly during the century, with the construction of many docks, needed as the Thames at the City could not cope with the volume of trade. The arrival of the railways and the Tube meant that London could expand over a much greater area. By the mid-19th century, with London still rapidly expanding in population and area, the City had already become only a small part of the wider metropolis.", "title": "History" }, { "paragraph_id": 25, "text": "An attempt was made in 1894 with the Royal Commission on the Amalgamation of the City and County of London to end the distinction between the city and the surrounding County of London, but a change of government at Westminster meant the option was not taken up. The city as a distinct polity survived despite its position within the London conurbation and numerous local government reforms. Supporting this status, the city was a special parliamentary borough that elected four members to the unreformed House of Commons, who were retained after the Reform Act 1832; reduced to two under the Redistribution of Seats Act 1885; and ceased to be a separate constituency under the Representation of the People Act 1948. Since then the city is a minority (in terms of population and area) of the Cities of London and Westminster.", "title": "History" }, { "paragraph_id": 26, "text": "The city's population fell rapidly in the 19th century and through most of the 20th century, as people moved outwards in all directions to London's vast suburbs, and many residential buildings were demolished to make way for office blocks. Like many areas of London and other British cities, the City fell victim to large scale and highly destructive aerial bombing during World War II, especially in the Blitz. Whilst St Paul's Cathedral survived the onslaught, large swathes of the area did not and the particularly heavy raids of late December 1940 led to a firestorm called the Second Great Fire of London.", "title": "History" }, { "paragraph_id": 27, "text": "There was a major rebuilding programme in the decades following the war, in some parts (such as at the Barbican) dramatically altering the urban landscape. But the destruction of the older historic fabric allowed the construction of modern and larger-scale developments, whereas in those parts not so badly affected by bomb damage the City retains its older character of smaller buildings. The street pattern, which is still largely medieval, was altered slightly in places, although there is a more recent trend of reversing some of the post-war modernist changes made, such as at Paternoster Square.", "title": "History" }, { "paragraph_id": 28, "text": "The City suffered terrorist attacks including the 1993 Bishopsgate bombing (IRA) and the 7 July 2005 London bombings (Islamist). In response to the 1993 bombing, a system of road barriers, checkpoints and surveillance cameras referred to as the \"ring of steel\" has been maintained to control entry points to the city.", "title": "History" }, { "paragraph_id": 29, "text": "The 1970s saw the construction of tall office buildings including the 600-foot (183 m), 47-storey NatWest Tower, the first skyscraper in the UK. By the 2010s, office space development had intensified in the City, especially in the central, northern and eastern parts, with skyscrapers including 30 St. Mary Axe (\"the Gherkin\"'), Leadenhall Building (\"the Cheesegrater\"), 20 Fenchurch Street (\"the Walkie-Talkie\"), the Broadgate Tower, the Heron Tower and 22 Bishopsgate.", "title": "History" }, { "paragraph_id": 30, "text": "The main residential section of the City today is the Barbican Estate, constructed between 1965 and 1976. The Museum of London was based there until March 2023 (due to reopen in West Smithfield in 2026), whilst a number of other services provided by the corporation are still maintained on the Barbican Estate.", "title": "History" }, { "paragraph_id": 31, "text": "The city has a unique political status, a legacy of its uninterrupted integrity as a corporate city since the Anglo-Saxon period and its singular relationship with the Crown. Historically its system of government was not unusual, but it was not reformed by the Municipal Corporations Act 1835 and little changed by later reforms, so that it is the only local government in the UK where elections are not run on the basis of one vote for every adult citizen.", "title": "Governance" }, { "paragraph_id": 32, "text": "It is administered by the City of London Corporation, headed by the Lord Mayor of London (not to be confused with the separate Mayor of London, an office created only in the year 2000), which is responsible for a number of functions and has interests in land beyond the city's boundaries. Unlike other English local authorities, the corporation has two council bodies: the (now largely ceremonial) Court of Aldermen and the Court of Common Council. The Court of Aldermen represents the wards, with each ward (irrespective of size) returning one alderman. The chief executive of the Corporation holds the ancient office of Town Clerk of London.", "title": "Governance" }, { "paragraph_id": 33, "text": "The city is a ceremonial county which has a Commission of Lieutenancy headed by the Lord Mayor instead of a Lord-Lieutenant and has two Sheriffs instead of a High Sheriff (see list of Sheriffs of London), quasi-judicial offices appointed by the livery companies, an ancient political system based on the representation and protection of trades (guilds). Senior members of the livery companies are known as liverymen and form the Common Hall, which chooses the lord mayor, the sheriffs and certain other officers.", "title": "Governance" }, { "paragraph_id": 34, "text": "The city is made up of 25 wards. They are survivors of the medieval government system that allowed a very local area to exist as a self-governing unit within the wider city. They can be described as electoral/political divisions; ceremonial, geographic and administrative entities; sub-divisions of the city. Each ward has an Alderman, who until the mid-1960s held office for life but since put themselves up for re-election at least every 6 years, and are the only directly elected Aldermen in the United Kingdom. Wards continue to have a Beadle, an ancient position which is now largely ceremonial whose main remaining function is the running of an annual Wardmote of electors, representatives and officials. At the Wardmote the ward's Alderman appoints at least one Deputy for the year ahead, and Wardmotes are also held during elections. Each ward also has a Ward Club, which is similar to a residents' association.", "title": "Governance" }, { "paragraph_id": 35, "text": "The wards are ancient and their number has changed three times since time immemorial:", "title": "Governance" }, { "paragraph_id": 36, "text": "Following boundary changes in 1994, and later reform of the business vote in the city, there was a major boundary and electoral representation revision of the wards in 2003, and they were reviewed again in 2010 for change in 2013, though not to such a dramatic extent. The review was conducted by senior officers of the corporation and senior judges of the Old Bailey; the wards are reviewed by this process to avoid malapportionment. The procedure of review is unique in the United Kingdom as it is not conducted by the Electoral Commission or a local government boundary commission every 8 to 12 years, which is the case for all other wards in Great Britain. Particular churches, livery company halls and other historic buildings and structures are associated with a ward, such as St Paul's Cathedral with Castle Baynard, and London Bridge with Bridge; boundary changes in 2003 removed some of these historic connections.", "title": "Governance" }, { "paragraph_id": 37, "text": "Each ward elects an alderman to the Court of Aldermen, and commoners (the City equivalent of a councillor) to the Court of Common Council of the corporation. Only electors who are Freemen of the City of London are eligible to stand. The number of commoners a ward sends to the Common Council varies from two to ten, depending on the number of electors in each ward. Since the 2003 review it has been agreed that the four more residential wards: Portsoken, Queenhithe, Aldersgate and Cripplegate together elect 20 of the 100 commoners, whereas the business-dominated remainder elect the remaining 80 commoners. 2003 and 2013 boundary changes have increased the residential emphasis of the mentioned four wards.", "title": "Governance" }, { "paragraph_id": 38, "text": "Census data provides eight nominal rather than 25 real wards, all of varying size and population. Being subject to renaming and definition at any time, these census 'wards' are notable in that four of the eight wards accounted for 67% of the 'square mile' and held 86% of the population, and these were in fact similar to and named after four City of London wards:", "title": "Governance" }, { "paragraph_id": 39, "text": "The city has a unique electoral system. Most of its voters are representatives of businesses and other bodies that occupy premises in the city. Its ancient wards have very unequal numbers of voters. In elections, both the businesses based in the city and the residents of the City vote.", "title": "Governance" }, { "paragraph_id": 40, "text": "The City of London Corporation was not reformed by the Municipal Corporations Act 1835, because it had a more extensive electoral franchise than any other borough or city; in fact, it widened this further with its own equivalent legislation allowing one to become a freeman without being a liveryman. In 1801, the city had a population of about 130,000, but increasing development of the city as a central business district led to this falling to below 5,000 after the Second World War. It has risen slightly to around 9,000 since, largely due to the development of the Barbican Estate. In 2009, the business vote was about 24,000, greatly exceeding residential voters. As the City of London Corporation has not been affected by other municipal legislation over the period of time since then, its electoral practice has become increasingly anomalous. Uniquely for city or borough elections, its elections remain independent-dominated.", "title": "Governance" }, { "paragraph_id": 41, "text": "The business or \"non-residential vote\" was abolished in other UK local council elections by the Representation of the People Act 1969, but was preserved in the City of London. The principal reason given by successive UK governments for retaining this mechanism for giving businesses representation, is that the city is \"primarily a place for doing business\". About 330,000 non-residents constitute the day-time population and use most of its services, far outnumbering residents, who number around 7,000 (2011). By contrast, opponents of the retention of the business vote argue that it is a cause of institutional inertia.", "title": "Governance" }, { "paragraph_id": 42, "text": "The City of London (Ward Elections) Act 2002, a private Act of Parliament, reformed the voting system and greatly increased the business franchise, allowing many more businesses to be represented. Under the new system, the number of non-resident voters has doubled from 16,000 to 32,000. Previously disenfranchised firms (and other organisations) are entitled to nominate voters, in addition to those already represented, and all such bodies are now required to choose their voters in a representative fashion. Bodies employing fewer than 10 people may appoint 1 voter; those employing 10 to 50 people 1 voter for every 5 employees; those employing more than 50 people 10 voters and 1 additional voter for each 50 employees beyond the first 50. The Act also removed other anomalies which had been unchanged since the 1850s.", "title": "Governance" }, { "paragraph_id": 43, "text": "Inner Temple and Middle Temple (which neighbour each other) in the western ward of Farringdon Without are within the boundaries and liberties of the City, but can be thought of as independent enclaves. They are two of the few remaining liberties, an old name for a geographic division with special rights. They are extra-parochial areas, historically not governed by the City of London Corporation (and are today regarded as local authorities for most purposes) and equally outside the ecclesiastical jurisdiction of the Bishop of London.", "title": "Governance" }, { "paragraph_id": 44, "text": "Within the city, the Corporation owns and runs both Smithfield Market and Leadenhall Market. It owns land beyond its boundaries, including open spaces (parks, forests and commons) in and around Greater London, including most of Epping Forest and Hampstead Heath. The Corporation owns Old Spitalfields Market and Billingsgate Fish Market, in the neighbouring London Borough of Tower Hamlets. It owns and helps fund the Old Bailey, the Central Criminal Court for England and Wales, as a gift to the nation, having begun as the City and Middlesex Sessions. The Honourable The Irish Society, a body closely linked with the corporation, also owns many public spaces in Northern Ireland.", "title": "Governance" }, { "paragraph_id": 45, "text": "The city has its own independent police force, the City of London Police—the Common Council (the main body of the corporation) is the police authority. The corporation also run the Hampstead Heath Constabulary, Epping Forest Keepers and the City of London market constabularies (whose members are no longer attested as constables but retain the historic title). The majority of Greater London is policed by the Metropolitan Police Service, based at New Scotland Yard.", "title": "Governance" }, { "paragraph_id": 46, "text": "The city has one hospital, St Bartholomew's Hospital, also known as 'Barts'. Founded in 1123, it is located at Smithfield, and is undergoing a long-awaited regeneration after doubts as to its continuing use during the 1990s.", "title": "Governance" }, { "paragraph_id": 47, "text": "The city is the third largest UK patron of the arts. It oversees the Barbican Centre and subsidises several important performing arts companies.", "title": "Governance" }, { "paragraph_id": 48, "text": "The London Port Health Authority, which is the responsibility of the corporation, is responsible for all port health functions on the tidal part of the Thames, including various seaports and London City Airport. The Corporation oversees the Bridge House Estates, which maintains Blackfriars Bridge, Millennium Bridge, Southwark Bridge, London Bridge and Tower Bridge. The City's flag flies over Tower Bridge, although neither footing is in the city.", "title": "Governance" }, { "paragraph_id": 49, "text": "The size of the city was constrained by a defensive perimeter wall, known as London Wall, which was built by the Romans in the late 2nd century to protect their strategic port city. However the boundaries of the City of London no longer coincide with the old city wall, as the City expanded its jurisdiction slightly over time. During the medieval era, the city's jurisdiction expanded westwards, crossing the historic western border of the original settlement—the River Fleet—along Fleet Street to Temple Bar. The city also took in the other \"City bars\" which were situated just beyond the old walled area, such as at Holborn, Aldersgate, West Smithfield, Bishopsgate and Aldgate. These were the important entrances to the city and their control was vital in maintaining the city's special privileges over certain trades.", "title": "Governance" }, { "paragraph_id": 50, "text": "Most of the wall has disappeared, but several sections remain visible. A section near the Museum of London was revealed after the devastation of an air raid on 29 December 1940 at the height of the Blitz. Other visible sections are at St Alphage, and there are two sections near the Tower of London. The River Fleet was canalised after the Great Fire of 1666 and then in stages was bricked up and has been since the 18th century one of London's \"lost rivers or streams\", today underground as a storm drain.", "title": "Governance" }, { "paragraph_id": 51, "text": "The boundary of the city was unchanged until minor boundary changes on 1 April 1994, when it expanded slightly to the west, north and east, taking small parcels of land from the London Boroughs of Westminster, Camden, Islington, Hackney and Tower Hamlets. The main purpose of these changes was to tidy up the boundary where it had been rendered obsolete by changes in the urban landscape. In this process the city also lost small parcels of land, though there was an overall net gain (the City grew from 1.05 to 1.12 square miles). Most notably, the changes placed the (then recently developed) Broadgate estate entirely in the city.", "title": "Governance" }, { "paragraph_id": 52, "text": "Southwark, to the south of the city on the other side of the Thames, was within the City between 1550 and 1899 as the Ward of Bridge Without, a situation connected with the Guildable Manor. The city's administrative responsibility there had in practice disappeared by the mid-Victorian period as various aspects of metropolitan government were extended into the neighbouring areas. Today it is part of the London Borough of Southwark. The Tower of London has always been outside the city and comes under the London Borough of Tower Hamlets.", "title": "Governance" }, { "paragraph_id": 53, "text": "The Corporation of the City of London has a full achievement of armorial bearings consisting of a shield on which the arms are displayed, a crest displayed on a helm above the shield, supporters on either side and a motto displayed on a scroll beneath the arms.", "title": "Governance" }, { "paragraph_id": 54, "text": "The coat of arms is \"anciently recorded\" at the College of Arms. The arms consist of a silver shield bearing a red cross with a red upright sword in the first quarter. They combine the emblems of the patron saints of England and London: the Cross of St George with the symbol of the martyrdom of Saint Paul. The sword is often erroneously supposed to commemorate the killing of Peasants' Revolt leader Wat Tyler by Lord Mayor of London William Walworth. However the arms were in use some months before Tyler's death, and the tradition that Walworth's dagger is depicted may date from the late 17th century.", "title": "Governance" }, { "paragraph_id": 55, "text": "The Latin motto of the city is \"Domine dirige nos\", which translates as \"Lord, direct us\". It is thought to have been adopted in the 17th century, as the earliest record of it is in 1633.", "title": "Governance" }, { "paragraph_id": 56, "text": "A banner of the arms (the design on the shield) is flown as a flag.", "title": "Governance" }, { "paragraph_id": 57, "text": "The City of London is the smallest ceremonial county of England by area and population, and the fourth most densely populated. Of the 326 English districts, it is the second smallest by population, after the Isles of Scilly, and the smallest by area. It is also the smallest English city by population (and in Britain, only two cities in Wales are smaller), and the smallest in the UK by area.", "title": "Geography" }, { "paragraph_id": 58, "text": "The elevation of the City ranges from sea level at the Thames to 21.6 metres (71 ft) at the junction of High Holborn and Chancery Lane. Two small but notable hills are within the historic core, Ludgate Hill to the west and Cornhill to the east. Between them ran the Walbrook, one of the many \"lost\" rivers or streams of London (another is the Fleet).", "title": "Geography" }, { "paragraph_id": 59, "text": "Beginning in the west, where the City borders Westminster, the boundary crosses the Victoria Embankment from the Thames, passes to the west of Middle Temple, then turns for a short distance along Strand and near Temple Bar then north up Chancery Lane, where it borders Camden. It turns east along Holborn to Holborn Circus and then goes northeast to Charterhouse Street. As it crosses Farringdon Road it becomes the boundary with Islington. It continues to Aldersgate, goes north, and turns east into some back streets soon after Aldersgate becomes Goswell Road, since 1994 embracing all of the corporation's Golden Lane Estate. Here, at Baltic Street West, is the most northerly extent. The boundary includes all of the Barbican Estate and continues east along Ropemaker Street and its continuation on the other side of Moorgate, becomes South Place. It goes north, reaching the border with Hackney, then east, north, east on back streets, with Worship Street forming a northern boundary, so as to include the Broadgate estate. The boundary then turns south at Norton Folgate and becomes the border with Tower Hamlets. It continues south into Bishopsgate, and takes some backstreets to Middlesex Street (Petticoat Lane) where it continues south-east then south. It then turns south-west, crossing the Minories so as to exclude the Tower of London, and then reaches the river. It then runs up the centre of the Thames, with the exception that Blackfriars Bridge falls within the city; the City controls London Bridge (as part of Bridge ward) but only half of the river underneath it.", "title": "Geography" }, { "paragraph_id": 60, "text": "The boundaries are marked by black bollards bearing the city's emblem, and by dragon boundary marks at major entrances, such as Holborn. A more substantial monument marks the boundary at Temple Bar on Fleet Street.", "title": "Geography" }, { "paragraph_id": 61, "text": "In some places, the financial district extends slightly beyond the boundaries, notably to the north and east, into the London boroughs of Tower Hamlets, Hackney and Islington, and informally these locations are seen as part of the \"Square Mile\". Since the 1990s the eastern fringe, extending into Hackney and Tower Hamlets, has increasingly been a focus for large office developments due to the availability of large sites compared to within the city.", "title": "Geography" }, { "paragraph_id": 62, "text": "The city has no sizeable parks within its boundary, but does have a network of a large number of gardens and small open spaces, many of them maintained by the corporation. These range from formal gardens such as the one in Finsbury Circus, containing a bowling green and bandstand, to churchyards such as St Olave Hart Street, to water features and artwork in courtyards and pedestrianised lanes.", "title": "Geography" }, { "paragraph_id": 63, "text": "Gardens include:", "title": "Geography" }, { "paragraph_id": 64, "text": "There are a number of private gardens and open spaces, often within courtyards of the larger commercial developments. Two of the largest are those of the Inner Temple and Middle Temple Inns of Court, in the far southwest.", "title": "Geography" }, { "paragraph_id": 65, "text": "The Thames and its riverside walks are increasingly being valued as open space and in recent years efforts have been made to increase the ability for pedestrians to access and walk along the river.", "title": "Geography" }, { "paragraph_id": 66, "text": "The nearest weather station has historically been the London Weather Centre at Kingsway/ Holborn, although observations ceased in 2010. Now St. James Park provides the nearest official readings.", "title": "Geography" }, { "paragraph_id": 67, "text": "The city has an oceanic climate (Köppen \"Cfb\") modified by the Urban Heat Island in the centre of London. This generally causes higher night-time minima than outlying areas. For example, the August mean minimum of 14.7 °C (58.5 °F) compares to a figure of 13.3 °C (55.9 °F) for Greenwich and Heathrow whereas is 11.6 °C (52.9 °F) at Wisley in the middle of several square miles of Metropolitan Green Belt. All figures refer to the observation period 1971–2000.", "title": "Geography" }, { "paragraph_id": 68, "text": "Accordingly, the weather station holds the record for the UK's warmest overnight minimum temperature, 24.0 °C (75.2 °F), recorded on 4 August 1990. The maximum is 37.6 °C (99.7 °F), set on 10 August 2003. The absolute minimum for the weather station is a mere −8.2 °C (17.2 °F), compared to readings around −15.0 °C (5.0 °F) towards the edges of London. Unusually, this temperature was during a windy and snowy cold spell (mid-January 1987), rather than a cold clear night—cold air drainage is arrested due to the vast urban area surrounding the city.", "title": "Geography" }, { "paragraph_id": 69, "text": "The station holds the record for the highest British mean monthly temperature, 24.5 °C (76.1 °F) (mean maximum 29.2 °C (84.6 °F), mean minimum 19.7 °C (67.5 °F) during July 2006). However, in terms of daytime maximum temperatures, Cambridge NIAB and Botanical Gardens with a mean maximum of 29.1 °C (84.4 °F), and Heathrow with 29.0 °C (84.2 °F) all exceeded this.", "title": "Geography" }, { "paragraph_id": 70, "text": "The city is a police area and has its own police force, the City of London Police, separate from the Metropolitan Police Service covering the majority of Greater London. The City Police have three police stations, at Snow Hill, Wood Street and Bishopsgate, and an administrative headquarters at Guildhall Yard East. The force comprises 735 police officers including 273 detectives. It is the smallest territorial police force in England and Wales, in both geographic area and the number of police officers.", "title": "Public services" }, { "paragraph_id": 71, "text": "Where the majority of British police forces have silver-coloured badges, those of the City of London Police are black and gold featuring the City crest. The force has rare red and white chequered cap bands and unique red and white striped duty arm bands on the sleeves of the tunics of constables and sergeants (red and white being the colours of the city), which in most other British police forces are black and white. City police sergeants and constables wear crested custodian helmets whilst on foot patrol. These helmets do not feature either St Edward's Crown or the Brunswick Star, which are used on most other police helmets in England and Wales.", "title": "Public services" }, { "paragraph_id": 72, "text": "The city's position as the United Kingdom's financial centre and a critical part of the country's economy, contributing about 2.5% of the UK's gross national product, has resulted in it becoming a target for political violence. The Provisional IRA exploded several bombs in the early 1990s, including the 1993 Bishopsgate bombing.", "title": "Public services" }, { "paragraph_id": 73, "text": "The area is also spoken of as a possible target for al-Qaeda. For instance, when in May 2004 the BBC's Panorama programme examined the preparedness of Britain's emergency services for a terrorist attack on the scale of the 11 September 2001 attacks, they simulated a chemical explosion on Bishopsgate in the east of the city. The \"Ring of Steel\" was established in the wake of the IRA bombings to guard against terrorist threats.", "title": "Public services" }, { "paragraph_id": 74, "text": "The city has fire risks in many historic buildings, including St Paul's Cathedral, Old Bailey, Mansion House, Smithfield Market, the Guildhall, and also in numerous high-rise buildings. There is one London Fire Brigade station in the city, at Dowgate, with one pumping appliance. The City relies upon stations in the surrounding London boroughs to support it at some incidents. The first fire engine is in attendance in roughly five minutes on average, the second when required in a little over five and a half minutes. There were 1,814 incidents attended in the City in 2006/2007—the lowest in Greater London. No-one died in an event arising from a fire in the four years prior to 2007.", "title": "Public services" }, { "paragraph_id": 75, "text": "There is power station located in Charterhouse Street that also provides heat to some of the surrounding buildings.", "title": "Public services" }, { "paragraph_id": 76, "text": "The Office for National Statistics recorded the population in 2011 as 7,375; slightly higher than in the previous census, 2001, and estimates the population as at mid-2016 to be 9,401. At the 2001 census the ethnic composition was 84.6% White, 6.8% South Asian, 2.6% Black, 2.3% Mixed, 2.0% Chinese and 1.7% were listed as \"other\". To the right is a table showing the change in population since 1801, based on decadal censuses. The first half of the 19th century shows a population of between 120,000 and 140,000, decreasing dramatically from 1851 to 1991, with a small increase between 1991 and 2001. The only notable boundary change since the first census in 1801 occurred in 1994.", "title": "Demography" }, { "paragraph_id": 77, "text": "The city's full-time working residents have much higher gross weekly pay than in London and Great Britain (England, Wales and Scotland): £773.30 compared to £598.60 and £491.00 respectively. There is a large inequality of income between genders (£1,085.90 in men compared to £653.50 in women), though this can be explained by job type and length of employment respectively. The 2001 Census showed the city as a unique district amongst 376 districts surveyed in England and Wales. The city had the highest proportional population increase, one-person households, people with qualifications at degree level or higher and the highest indications of overcrowding. It recorded the lowest proportion of households with cars or vans, people who travel to work by car, married couple households and the lowest average household size: just 1.58 people. It also ranked highest within the Greater London area for the percentage of people with no religion and people who are employed.", "title": "Demography" }, { "paragraph_id": 78, "text": "The City of London vies with New York City's Downtown Manhattan as the financial capital of the world. The London Stock Exchange (shares and bonds), Lloyd's of London (insurance) and the Bank of England are all based in the city. Over 500 banks have offices in the city. The Alternative Investment Market, a market for trades in equities of smaller firms, is a recent development. In 2009, the City of London accounted for 2.4% of UK GDP.", "title": "Economy" }, { "paragraph_id": 79, "text": "London's foreign exchange market has been described by Reuters as 'the crown jewel of London's financial sector'. Of the $3.98 trillion daily global turnover, as measured in 2009, trading in London accounted for around $1.85 trillion, or 46.7% of the total. The pound sterling, the currency of the United Kingdom, is globally the fourth-most traded currency and the fourth most held reserve currency.", "title": "Economy" }, { "paragraph_id": 80, "text": "Canary Wharf, a few miles east of the City in Tower Hamlets, which houses many banks and other institutions formerly located in the Square Mile, has since 1991 become another centre for London's financial services industry. Although growth has continued in both locations, and there have been relocations in both directions, the Corporation has come to realise that its planning policies may have been causing financial firms to choose Canary Wharf as a location.", "title": "Economy" }, { "paragraph_id": 81, "text": "In 2022, 12.3% of City of London residents had been granted non-domicile status in order to avoid their paying tax in the UK.", "title": "Economy" }, { "paragraph_id": 82, "text": "Many major global companies have their headquarters in the city, including Aviva, BT Group, Lloyds Banking Group, Quilter, Prudential, Schroders, Standard Chartered, and Unilever.", "title": "Economy" }, { "paragraph_id": 83, "text": "A number of the world's largest law firms are headquartered in the city, including four of the \"Magic Circle\" law firms (Allen & Overy, Freshfields Bruckhaus Deringer, Linklaters and Slaughter & May), as well as other firms such as Ashurst LLP, DLA Piper, Eversheds Sutherland, Herbert Smith Freehills and Hogan Lovells.", "title": "Economy" }, { "paragraph_id": 84, "text": "Whilst the financial sector, and related businesses and institutions, continue to dominate, the economy is not limited to that sector. The legal profession has a strong presence, especially in the west and north (i.e., towards the Inns of Court). Retail businesses were once important, but have gradually moved to the West End of London, though it is now Corporation policy to encourage retailing in some locations, for example at Cheapside near St Paul's. The city has a number of visitor attractions, mainly based on its historic heritage as well as the Barbican Centre and adjacent Museum of London, though tourism is not at present a major contributor to the city's economy or character. The city has many pubs, bars and restaurants, and the \"night-time\" economy does feature in the Bishopsgate area, towards Shoreditch. The meat market at Smithfield, wholly within the city, continues to be one of London's main markets (the only one remaining in central London) and the country's largest meat market. In the east is Leadenhall Market, a fresh food market that is also a visitor attraction.", "title": "Economy" }, { "paragraph_id": 85, "text": "The trend for purely office development is beginning to reverse as the Corporation encourages residential use, albeit with development occurring when it arises on windfall sites. The city has a target of 90 additional dwellings per year. Some of the extra accommodation is in small pre-World War II listed buildings, which are not suitable for occupation by the large companies which now provide much of the city's employment. Recent residential developments include \"the Heron\", a high-rise residential building on the Milton Court site adjacent to the Barbican, and the Heron Plaza development on Bishopsgate is also expected to include residential parts.", "title": "Economy" }, { "paragraph_id": 86, "text": "Since the 1990s, the City has diversified away from near exclusive office use in other ways. For example, several hotels and the first department store opened in the 2000s. A shopping centre was more recently opened at One New Change, Cheapside (near St Paul's Cathedral) in October 2010, which is open seven days a week. However, large sections remain quiet at weekends, especially in the eastern section, and it is quite common to find shops, pubs and cafes closed on these days.", "title": "Economy" }, { "paragraph_id": 87, "text": "Fire, bombing and post-World War II redevelopment have meant that the city, despite its history, has fewer intact historic structures than one might expect. Nonetheless, there remain many dozens of (mostly Victorian and Edwardian) fine buildings, typically in historicist and neoclassical style. They include the Monument to the Great Fire of London (\"the Monument\"), St Paul's Cathedral, the Guildhall, the Royal Exchange, Dr. Johnson's House, Mansion House and a great many churches, many designed by Sir Christopher Wren, who also designed St Paul's.", "title": "Landmarks" }, { "paragraph_id": 88, "text": "Prince Henry's Room and 2 King's Bench Walk are notable historic survivors of heavy bombing of the Temple area, which has largely been rebuilt to its historic form. Another example of a bomb-damaged place having been restored is Staple Inn on Holborn. A few small sections of the Roman London Wall exist, for example near the Tower of London and in the Barbican area. Among the twentieth-century listed buildings are Bracken House, the first post World War II buildings in the country to be given statutory protection, and the whole of the Barbican and Golden Lane Estate.", "title": "Landmarks" }, { "paragraph_id": 89, "text": "The Tower of London is not in the city, but is a notable visitor attraction which brings tourists to the southeast of the city. Other landmark buildings with historical significance include the Bank of England, the Old Bailey, the Custom House, Smithfield Market, Leadenhall Market and St Bartholomew's Hospital. Noteworthy contemporary buildings include a number of modern high-rise buildings (see section below) as well as the Lloyd's building.", "title": "Landmarks" }, { "paragraph_id": 90, "text": "A growing number of tall buildings and skyscrapers are principally used by the financial sector. Almost all are situated in the eastern side around Bishopsgate, Leadenhall Street and Fenchurch Street, in the financial core of the city. In the north there is a smaller cluster comprising the Barbican Estate's three tall residential towers and the commercial CityPoint tower. In 2007, the 100 m (328 ft) tall Drapers' Gardens building was demolished and replaced by a shorter tower.", "title": "Landmarks" }, { "paragraph_id": 91, "text": "The city's buildings of at least 100 m (328 ft) in height are:", "title": "Landmarks" }, { "paragraph_id": 92, "text": "The timeline of the tallest building in the city is as follows:", "title": "Landmarks" }, { "paragraph_id": 93, "text": "The city is well served by the London Underground (\"tube\") and National Rail networks.", "title": "Transport" }, { "paragraph_id": 94, "text": "Seven London Underground lines serve the city:", "title": "Transport" }, { "paragraph_id": 95, "text": "Aldgate East ( ), Chancery Lane (), Farringdon ( ), Temple ( ) and Tower Hill ( ) tube stations are all situated within metres of the City of London boundary.", "title": "Transport" }, { "paragraph_id": 96, "text": "The Docklands Light Railway (DLR ) has two termini in the city: Bank and Tower Gateway. The DLR links the City directly to the East End. Destinations include Canary Wharf and London City Airport.", "title": "Transport" }, { "paragraph_id": 97, "text": "The Elizabeth line (constructed by the Crossrail project) runs east–west underneath the City of London. The line serves two stations in the City – Farringdon and Liverpool Street – which additionally serves the Barbican and Moorgate areas. Elizabeth line services link the City directly to destinations such as Canary Wharf, Heathrow Airport, and the M4 Corridor high-technology hub (serving Slough and Reading).", "title": "Transport" }, { "paragraph_id": 98, "text": "The city is served by a frequent Thameslink rail service which runs north–south through London. Thameslink services call at Farringdon, City Thameslink, and London Blackfriars. This provides the city with a direct link to key destinations across London, including Elephant & Castle, London Bridge, and St Pancras International (for the Eurostar to mainland Europe). There are also regular, direct trains from these stations to major destinations across East Anglia and the South East, including Bedford, Brighton, Cambridge, Gatwick Airport, Luton Airport, and Peterborough.", "title": "Transport" }, { "paragraph_id": 99, "text": "There are several \"London Terminals\" in the city:", "title": "Transport" }, { "paragraph_id": 100, "text": "All stations in the city are in London fare zone 1.", "title": "Transport" }, { "paragraph_id": 101, "text": "The national A1, A10 A3, A4, and A40 road routes begin in the city. The city is in the London congestion charge zone, with the small exception on the eastern boundary of the sections of the A1210/A1211 that are part of the Inner Ring Road. The following bridges, listed west to east (downstream), cross the River Thames: Blackfriars Bridge, Blackfriars Railway Bridge, Millennium Bridge (footbridge), Southwark Bridge, Cannon Street Railway Bridge and London Bridge; Tower Bridge is not in the city. The city, like most of central London, is well served by buses, including night buses. Two bus stations are in the city, at Aldgate on the eastern boundary with Tower Hamlets, and at Liverpool Street by the railway station. However although the London Road Traffic Act 1924 removed from existing local authorities the powers to prevent the development of road passengers transport services within the London Metropolitan Area, the City of London retained most such powers. As a consequence, neither Trolleybus nor Green Line Coach services were permitted to enter the City to pick up or set down passengers. Hence the building of Aldgate (Minories) Trolleybus and Coach station as well as the complex terminal arrangements at Parliament Hill Fields. This restriction was removed by the Transport Act 1985", "title": "Transport" }, { "paragraph_id": 102, "text": "Cycling infrastructure in the city is maintained by the City of London Corporation and Transport for London (TfL).", "title": "Transport" }, { "paragraph_id": 103, "text": "The Sandander Cycles and Beryl bike sharing systems operate in the City of London.", "title": "Transport" }, { "paragraph_id": 104, "text": "One London River Services pier is on the Thames in the city, Blackfriars Millennium Pier, though the Tower Millennium Pier lies adjacent to the boundary near the Tower of London. One of the Port of London's 25 safeguarded wharves, Walbrook Wharf, is adjacent to Cannon Street station, and is used by the corporation to transfer waste via the river. Swan Lane Pier, just upstream of London Bridge, is proposed to be replaced and upgraded for regular passenger services, planned to take place in 2012–2015. Before then, Tower Pier is to be extended.", "title": "Transport" }, { "paragraph_id": 105, "text": "There is a public riverside walk along the river bank, opened in stages over recent years. The only section not running along the river is a short stretch at Queenhithe. The walk along Walbrook Wharf is closed to pedestrians when waste is being transferred onto barges.", "title": "Transport" }, { "paragraph_id": 106, "text": "According to a survey conducted in March 2011, the methods by which employed residents 16–74 get to work varied widely: 48.4% go on foot; 19.5% via light rail, (i.e. the Underground, DLR, etc.); 9.2% work mainly from home; 5.8% take the train; 5.6% travel by bus, minibus, or coach; and 5.3% go by bicycle; with just 3.4% commuting by car or van, as driver or passenger.", "title": "Transport" }, { "paragraph_id": 107, "text": "The city is home to a number of higher education institutions including: the Guildhall School of Music and Drama, the Cass Business School, The London Institute of Banking & Finance and parts of three of the universities in London: the Maughan Library of King's College London on Chancery Lane, the business school of London Metropolitan University, and a campus of the University of Chicago Booth School of Business. The College of Law has its London campus in Moorgate. Part of Barts and The London School of Medicine and Dentistry is on the Barts hospital site at West Smithfield.", "title": "Education" }, { "paragraph_id": 108, "text": "The city has only one directly maintained primary school, The Aldgate School (formerly Sir John Cass's Foundation Primary School) at Aldgate (ages 4 to 11). It is a Voluntary-Aided (VA) Church of England school, maintained by the Education Service of the City of London.", "title": "Education" }, { "paragraph_id": 109, "text": "City residents send their children to schools in neighbouring Local Education Authorities, such as Islington, Tower Hamlets, Westminster and Southwark.", "title": "Education" }, { "paragraph_id": 110, "text": "The City controls three independent schools, City of London School (a boys' school) and City of London School for Girls in the city, and the City of London Freemen's School (co-educational day and boarding) in Ashtead, Surrey. The City of London School for Girls and City of London Freemen's School have their own preparatory departments for entrance at age seven. It is the principal sponsor of The City Academy, Hackney, City of London Academy Islington, and City of London Academy, Southwark.", "title": "Education" }, { "paragraph_id": 111, "text": "Libraries operated by the Corporation include three lending libraries; Barbican Library, Shoe Lane Library and Artizan Street Library and Community Centre. Membership is open to all – with one official proof of address required to join.", "title": "Education" }, { "paragraph_id": 112, "text": "Guildhall Library, and City Business Library are also public reference libraries, specialising in the history of London and business reference resources.", "title": "Education" }, { "paragraph_id": 113, "text": "102.^\"Chancery Lane\". . short waking distance from famous Hatton Garden.", "title": "References" } ]	The City of London, widely referred to simply as the City, is a city, ceremonial county and local government district that contains the ancient centre, and constitutes, alongside Canary Wharf, the primary central business district (CBD) of London and one of the leading financial centres of the world. It constituted most of London from its settlement by the Romans in the 1st century AD to the Middle Ages, but the modern area referred to as London has since grown far beyond the City of London boundary. The City is now only a small part of the metropolis of Greater London, though it remains a notable part of central London. Administratively, the City of London is not one of the London boroughs, a status reserved for the other 32 districts. It is also a separate ceremonial county, being an enclave surrounded by Greater London, and is the smallest ceremonial county in England. The City of London is known colloquially as the Square Mile, as it is 1.12 sq mi in area. Both the terms the City and the Square Mile are often used as metonyms for the UK's trading and financial services industries, which continue a notable history of being largely based in the City. The name London is now ordinarily used for a far wider area than just the City. London most often denotes the sprawling London metropolis, or the 32 Greater London boroughs, in addition to the City of London itself. The local authority for the City, namely the City of London Corporation, is unique in the UK and has some unusual responsibilities for a local council, such as being the police authority. It is also unusual in having responsibilities and ownerships beyond its boundaries. The corporation is headed by the Lord Mayor of the City of London. The Lord Mayor, as of November 2023, is Michael Mainelli. The City is made up of 25 wards, with administration at the historic Guildhall. Other historic sites include St Paul's Cathedral, Royal Exchange, Mansion House, Old Bailey, and Smithfield Market. Although not within the City, the adjacent Tower of London, built to dominate the City, is part of its old defensive perimeter. The City has responsibility for five bridges in its capacity as trustee of the Bridge House Estates: Blackfriars Bridge, Millennium Bridge, Southwark Bridge, London Bridge and Tower Bridge. The City is a major business and financial centre, with both the Bank of England and the London Stock Exchange based in the City. Throughout the 19th century, the City was the world's primary business centre, and it continues to be a major meeting point for businesses. London came second in the Global Financial Centres Index, published in 2022. The insurance industry is located in the eastern side of the city, around Lloyd's building. Since about the 1980s, a secondary financial district has existed outside the city, at Canary Wharf, 2.5 miles (4 km) to the east. The legal profession forms a major component of the northern and western sides of the City, especially in the Temple and Chancery Lane areas where the Inns of Court are located, of which two—Inner Temple and Middle Temple—fall within the City of London boundary. The City has a resident population of 8,853 as of 2021 but over 500,000 are employed there and some estimates put the number of workers in the City to be over 1 million. About three-quarters of the jobs in the City of London are in the financial, professional, and associated business services sectors.	2001-10-25T12:13:38Z	2023-12-20T09:30:01Z	[ "Template:Rail-interchange", "Template:English district population citation", "Template:NoteFoot", "Template:Navboxes", "Template:Redirect", "Template:NoteTag", "Template:Circa", "Template:See", "Template:Ambiguous", "Template:Subject bar", "Template:Weather box", "Template:Cite news", "Template:Webarchive", "Template:Short description", "Template:Rint", "Template:About", "Template:Reflist", "Template:ISBN", "Template:Use dmy dates", "Template:Efn", "Template:Notelist-ua", "Template:Cite book", "Template:Cite web", "Template:Cite Hansard", "Template:URL", "Template:Main", "Template:See also", "Template:Historical populations", "Template:Citation needed", "Template:Cite journal", "Template:City of London", "Template:Authority control", "Template:Use British English", "Template:Infobox settlement", "Template:Convert" ]	https://en.wikipedia.org/wiki/City_of_London
6,884	Clitoris	The clitoris (/ˈklɪtərɪs/ or /klɪˈtɔːrɪs/ ; pl.: clitorises or clitorides) is a female sex organ present in mammals, ostriches, and a limited number of other animals. In humans, the visible portion – the glans – is at the front junction of the labia minora (inner lips), above the opening of the urethra. Unlike the penis, the male homologue (equivalent) to the clitoris, it usually does not contain the distal portion (or opening) of the urethra and is therefore not used for urination. In most species, the clitoris lacks any reproductive function. While few animals urinate through the clitoris or use it reproductively, the spotted hyena, which has an especially large clitoris, urinates, mates, and gives birth via the organ. Some other mammals, such as lemurs and spider monkeys, also have a large clitoris. The clitoris is the human female's most sensitive erogenous zone and generally the primary anatomical source of human female sexual pleasure. The clitoris is a complex structure, and its size and sensitivity can vary. The glans (head) of the human clitoris is roughly the size and shape of a pea and is estimated to have 8,000 and possibly more than 10,000 sensory nerve endings. Sexological, medical, and psychological debate has focused on the clitoris, and it has been subject to social constructionist analyses and studies. Such discussions range from anatomical accuracy, gender inequality, female genital mutilation, and orgasmic factors and their physiological explanation for the G-spot. Although, in humans, the only known purpose of the clitoris is to provide sexual pleasure, whether the clitoris is vestigial, an adaptation, or serves a reproductive function has been debated. Social perceptions of the clitoris include the significance of its role in female sexual pleasure, assumptions about its true size and depth, and varying beliefs regarding genital modification such as clitoris enlargement, clitoris piercing and clitoridectomy. Genital modification may be for aesthetic, medical or cultural reasons. Knowledge of the clitoris is significantly affected by cultural perceptions of the organ. Studies suggest that knowledge of its existence and anatomy is scant in comparison with that of other sexual organs and that more education about it could help alleviate social stigmas associated with the female body and female sexual pleasure. Examples of stigma include the ideas that the clitoris and vulva in general are visually unappealing, that female masturbation is taboo, or that men should be expected to master and control women's orgasms. The Oxford English Dictionary states that the word clitoris likely has its origin in the Ancient Greek κλειτορίς, kleitoris, perhaps derived from the verb κλείειν, kleiein, "to shut". Clitoris is also Greek for the word key, "indicating that the ancient anatomists considered it the key" to female sexuality. In addition to key, the Online Etymology Dictionary suggests other Greek candidates for the word's etymology include a noun meaning "latch" or "hook"; a verb meaning "to touch or titillate lasciviously", "to tickle" (one German synonym for the clitoris is der Kitzler, "the tickler"), although this verb is more likely derived from "clitoris"; and a word meaning "side of a hill", from the same root as "climax". The Oxford English Dictionary also states that the shortened form "clit", the first occurrence of which was noted in the United States, has been used in print since 1958: until then, the common abbreviation was "clitty". The plural forms are clitorises in English and clitorides in Latin. The Latin genitive is clitoridis, as in "glans clitoridis". In medical and sexological literature, the clitoris is sometimes referred to as "the female penis" or pseudo-penis, and the term clitoris is commonly used to refer to the glans alone; partially because of this, there have been various terms for the organ that have historically confused its anatomy. In mammals, sexual differentiation is determined by the sperm that carries either an X or a Y (male) chromosome. The Y chromosome contains a sex-determining gene (SRY) that encodes a transcription factor for the protein TDF (testis determining factor) and triggers the creation of testosterone and anti-Müllerian hormone for the embryo's development into a male. This differentiation begins about eight or nine weeks after conception. Some sources state that it continues until the twelfth week, while others state that it is evident by the thirteenth week and that the sex organs are fully developed by the sixteenth week. The clitoris develops from a phallic outgrowth in the embryo called the genital tubercle. Initially undifferentiated, the tubercle develops into either a clitoris or penis during the development of the reproductive system depending on exposure to androgens (which are primarily male hormones). The clitoris forms from the same tissues that become the glans and shaft of the penis, and this shared embryonic origin makes these two organs homologous (different versions of the same structure). If exposed to testosterone, the genital tubercle elongates to form the penis. By fusion of the urogenital folds – elongated spindle-shaped structures that contribute to the formation of the urethral groove on the belly aspect of the genital tubercle – the urogenital sinus closes completely and forms the spongy urethra, and the labioscrotal swellings unite to form the scrotum. In the absence of testosterone, the genital tubercle allows for the formation of the clitoris; the initially rapid growth of the phallus gradually slows and the clitoris is formed. The urogenital sinus persists as the vestibule of the vagina, the two urogenital folds form the labia minora, and the labioscrotal swellings enlarge to form the labia majora, completing the female genitalia. A rare condition that can develop from higher than average androgen exposure is clitoromegaly. The clitoris contains external and internal components. It consists of the glans, the body (which is composed of two erectile structures known as the corpora cavernosa), and two crura. It has a hood formed by the labia minora (inner lips). It also has vestibular or clitoral bulbs. The frenulum of the clitoris is beneath the glans. The clitoral body supports the glans, and its shape can be seen and felt through the clitoral hood. Research indicates that clitoral tissue extends into the vagina's anterior wall. Şenaylı et al. said that the histological evaluation of the clitoris, "especially of the corpora cavernosa, is incomplete because for many years the clitoris was considered a rudimentary and nonfunctional organ." They added that Baskin and colleagues examined the clitoris' masculinization after dissection and using imaging software after Masson chrome staining, put the serial dissected specimens together; this revealed that the nerves of the clitoris surround the whole clitoral body. The clitoris, vestibular bulbs, labia minora, and urethra involve two histologically distinct types of vascular tissue (tissue related to blood vessels), the first of which is trabeculated, erectile tissue innervated by the cavernous nerves. The trabeculated tissue has a spongy appearance; along with blood, it fills the large, dilated vascular spaces of the clitoris and the bulbs. Beneath the epithelium of the vascular areas is smooth muscle. As indicated by Yang et al.'s research, it may also be that the urethral lumen (the inner open space or cavity of the urethra), which is surrounded by a spongy tissue, has tissue that "is grossly distinct from the vascular tissue of the clitoris and bulbs, and on macroscopic observation, is paler than the dark tissue" of the clitoris and bulbs. The second type of vascular tissue is non-erectile, which may consist of blood vessels that are dispersed within a fibrous matrix and have only a minimal amount of smooth muscle. Highly innervated, the clitoral glans (glans clitoridis) exists at the tip of the clitoral body as a fibro-vascular cap and is usually the size and shape of a pea, although it is sometimes much larger or smaller. It is homologous to the male glans penis. The clitoral glans, or the entire clitoris, is estimated to have 8,000 and possibly 10,000 or more, sensory nerve endings. Research conflicts on whether or not the glans is composed of erectile or non-erectile tissue. Although the clitoral body becomes engorged with blood upon sexual arousal, erecting the clitoral glans, some sources describe the clitoral glans and labia minora as composed of non-erectile tissue; this is especially the case for the glans. They state that the clitoral glans and labia minora have blood vessels that are dispersed within a fibrous matrix and have only a minimal amount of smooth muscle, or that the clitoral glans is "a midline, densely neural, non-erectile structure". Other descriptions of the glans assert that it is composed of erectile tissue and that erectile tissue is present within the labia minora. The glans may be noted as having glandular vascular spaces that are not as prominent as those in the clitoral body, with the spaces being separated more by smooth muscle than in the body and crura. Adipose tissue is absent in the labia minora, but the organ may be described as being made up of dense connective tissue, erectile tissue and elastic fibers. The clitoral frenulum or frenum (frenulum clitoridis and crus glandis clitoridis in Latin) is a band of tissue formed between the undersurface of the glans and the top ends of the labia minora. It is homologous to the penile frenulum in males. The frenulum's main function is to maintain the clitoris in its innate position. The clitoral body (also known as the corpus clitoridis or shaft of the clitoris) forms a wishbone-shaped structure containing the corpora cavernosa – a pair of sponge-like regions of erectile tissue that contain most of the blood in the clitoris during clitoral erection. It is homologous to the penile shaft in the male. The two corpora forming the clitoral body are surrounded by thick fibro-elastic tunica albuginea, literally meaning "white covering", connective tissue. These corpora are separated incompletely from each other in the midline by a fibrous pectiniform septum – a comblike band of connective tissue extending between the corpora cavernosa. The clitoral body extends up to several centimeters before reversing direction and branching, resulting in an inverted "V" shape that extends as a pair of crura ("legs"). The crura are the proximal portions of the arms of the wishbone. Ending at the glans of the clitoris, the tip of the body bends anteriorly away from the pubis. Each crus (singular form of crura) is attached to the corresponding ischial ramus – extensions of the copora beneath the descending pubic rami. Concealed behind the labia minora, the crura ends with attachment at or just below the middle of the pubic arch. Associated are the urethral sponge, perineal sponge, a network of nerves and blood vessels, the suspensory ligament of the clitoris, muscles and the pelvic floor. There is no identified correlation between the size of the clitoral glans or clitoris as a whole, and a woman's age, height, weight, use of hormonal contraception, or being post-menopausal, although women who have given birth may have significantly larger clitoral measurements. Centimeter (cm) and millimeter (mm) measurements of the clitoris show variations in its size. The clitoral glans have been cited as typically varying from 2 mm to 1 cm and usually being estimated at four to five mm in both the transverse and longitudinal planes. A 1992 study concluded that the total clitoral length, including glans and body, is 16.0 ± 4.3 mm (0.63 ± 0.17 in), where 16 mm (0.63 in) is the mean and 4.3 mm (0.17 in) is the standard deviation. Concerning other studies, researchers from the Elizabeth Garrett Anderson and Obstetric Hospital in London measured the labia and other genital structures of 50 women from the age of 18 to 50, with a mean age of 35.6., from 2003 to 2004, and the results given for the clitoral glans were 3–10 mm for the range and 5.5 [1.7] mm for the mean. Other research indicates that the clitoral body can measure 5–7 centimetres (2.0–2.8 in) in length, while the clitoral body and crura together can be 10 centimetres (3.9 in) or more in length. The clitoral hood projects at the front of the labia commissure, where the edges of the labia majora (outer lips) meet at the base of the pubic mound; it is partially formed by fusion of the upper part of the external folds of the labia minora (inner lips) and covers the glans and external shaft. There is considerable variation in how much of the glans protrudes from the hood and how much is covered by it, ranging from completely covered to fully exposed, and tissue of the labia minora also encircles the base of the glans. The vestibular bulbs are more closely related to the clitoris than the vestibule because of the similarity of the trabecular and erectile tissue within the clitoris and bulbs, and the absence of trabecular tissue in other genital organs, with the erectile tissue's trabecular nature allowing engorgement and expansion during sexual arousal. The vestibular bulbs are typically described as lying close to the crura on either side of the vaginal opening; internally, they are beneath the labia majora. When engorged with blood, they cuff the vaginal opening and cause the vulva to expand outward. Although several texts state that they surround the vaginal opening, Ginger et al. state that this does not appear to be the case and tunica albuginea does not envelop the erectile tissue of the bulbs. In Yang et al.'s assessment of the bulbs' anatomy, they conclude that the bulbs "arch over the distal urethra, outlining what might be appropriately called the 'bulbar urethra' in women." The clitoris and penis generally have the same anatomical structure, although the distal portion (or opening) of the urethra is absent in the clitoris of humans and most other animals. The idea that males have clitorises was suggested in 1987 by researcher Josephine Lowndes Sevely theorized that the male corpora cavernosa (a pair of sponge-like regions of erectile tissue that contain most of the blood in the penis during penile erection) are the true counterpart of the clitoris. She argued that "the male clitoris" is directly beneath the rim of the glans penis, where the frenulum of prepuce of the penis (a fold of the prepuce) is located, and proposed that this area be called the "Lownde's crown". Her theory and proposal, though acknowledged in anatomical literature, did not materialize in anatomy books. Modern anatomical texts show that the clitoris displays a hood that is the equivalent of the penis' foreskin, which covers the glans. It also has a shaft that is attached to the glans. The male corpora cavernosa are homologous to the corpus cavernosum clitoridis (the female cavernosa), the bulb of the penis is homologous to the vestibular bulbs beneath the labia minora, the scrotum is homologous to the labia majora, and the penile raphe is homologous to the labia minora. Upon anatomical study, the penis can be described as a clitoris that has been mostly pulled out of the body and grafted on top of a significantly smaller piece of spongiosum containing the urethra. Concerning nerve endings, the human clitoris' estimated number of nerve endings (8,000 to over 10,000) is commonly cited as being twice as many as the nerve endings found in the human penis (for its glans or body as a whole) and as more than any other part of the human body. These reports sometimes conflict with other sources on clitoral anatomy or those concerning the nerve endings in the human penis. For example, while some sources estimate that the human penis has 4,000 nerve endings, other sources state that the glans or the entire penile structure have the same amount of nerve endings as the clitoral glans. Some sources state that in contrast to the glans penis, the clitoral glans lacks smooth muscle within its fibrovascular cap and is thus differentiated from the erectile tissues of the clitoris and bulbs; additionally, bulb size varies and may be dependent on age and estrogenization. While the bulbs are considered the equivalent of the male spongiosum, they do not completely encircle the urethra. The thin corpus spongiosum of the penis runs along the underside of the penile shaft, enveloping the urethra, and expands at the end to form the glans. It partially contributes to erection, which is primarily caused by the two corpora cavernosa that comprise the bulk of the shaft; like the female cavernosa, the male cavernosa soak up blood and become erect when sexually excited. The male corpora cavernosa taper off internally on reaching the spongiosum head. Concerning the Y-shape of the cavernosa – crown, body, and legs – the body accounts for much more of the structure in men, and the legs are stubbier; typically, the cavernosa are longer and thicker in males than in females. The clitoris has an abundance of nerve endings, and is the human female's most sensitive erogenous zone and generally the primary anatomical source of human female sexual pleasure. When sexually stimulated, it may incite female sexual arousal. Sexual stimulation, including arousal, may result from mental stimulation, foreplay with a sexual partner, or masturbation, and can lead to orgasm. The most effective sexual stimulation of the organ is usually manually or orally (cunnilingus), which is often referred to as direct clitoral stimulation; in cases involving sexual penetration, these activities may also be referred to as additional or assisted clitoral stimulation. Direct clitoral stimulation involves physical stimulation to the external anatomy of the clitoris – glans, hood, and the external shaft. Stimulation of the labia minora (inner lips), due to its external connection with the glans and hood, may have the same effect as direct clitoral stimulation. Though these areas may also receive indirect physical stimulation during sexual activity, such as when in friction with the labia majora (outer lips), indirect clitoral stimulation is more commonly attributed to penile-vaginal penetration. Penile-anal penetration may also indirectly stimulate the clitoris by the shared sensory nerves (especially the pudendal nerve, which gives off the inferior anal nerves and divides into two terminal branches: the perineal nerve and the dorsal nerve of the clitoris). Due to the glans' high sensitivity, direct stimulation to it is not always pleasurable; instead, direct stimulation to the hood or the areas near the glans is often more pleasurable, with the majority of women preferring to use the hood to stimulate the glans, or to have the glans rolled between the lips of the labia, for indirect touch. It is also common for women to enjoy the shaft of the clitoris being softly caressed in concert with the occasional circling of the clitoral glans. This might be with or without manual penetration of the vagina, while other women enjoy having the entire area of the vulva caressed. As opposed to the use of dry fingers, stimulation from well-lubricated fingers, either by vaginal lubrication or a personal lubricant, is usually more pleasurable for the external anatomy of the clitoris. As the clitoris' external location does not allow for direct stimulation by sexual penetration, any external clitoral stimulation while in the missionary position usually results from the pubic bone area, the movement of the groins when in contact. As such, some couples may engage in the woman-on-top position or the coital alignment technique, a sex position combining the "riding high" variation of the missionary position with pressure-counterpressure movements performed by each partner in rhythm with sexual penetration, to maximize clitoral stimulation. Lesbian couples may engage in tribadism for ample clitoral stimulation or mutual clitoral stimulation during whole-body contact. Pressing the penis in a gliding or circular motion against the clitoris (intercrural sex), or stimulating it by the movement against another body part, may also be practiced. A vibrator (such as a clitoral vibrator), dildo or other sex toy may be used. Other women stimulate the clitoris by use of a pillow or other inanimate object, by a jet of water from the faucet of a bathtub or shower, or by closing their legs and rocking. During sexual arousal, the clitoris and the whole of the genitalia engorge and change color as the erectile tissues fill with blood (vasocongestion), and the individual experiences vaginal contractions. The ischiocavernosus and bulbocavernosus muscles, which insert into the corpora cavernosa, contract and compress the dorsal vein of the clitoris (the only vein that drains the blood from the spaces in the corpora cavernosa), and the arterial blood continues a steady flow and having no way to drain out, fills the venous spaces until they become turgid and engorged with blood. This is what leads to clitoral erection. The clitoral glans doubles in diameter upon arousal and further stimulation become less visible as it is covered by the swelling of tissues of the clitoral hood. The swelling protects the glans from direct contact, as direct contact at this stage can be more irritating than pleasurable. Vasocongestion eventually triggers a muscular reflex, which expels the blood that was trapped in surrounding tissues, and leads to an orgasm. A short time after stimulation has stopped, especially if orgasm has been achieved, the glans becomes visible again and returns to its normal state, with a few seconds (usually 5–10) to return to its normal position and 5–10 minutes to return to its original size. If orgasm is not achieved, the clitoris may remain engorged for a few hours, which women often find uncomfortable. Additionally, the clitoris is very sensitive after orgasm, making further stimulation initially painful for some women. General statistics indicate that 70–80 percent of women require direct clitoral stimulation (consistent manual, oral, or other concentrated friction against the external parts of the clitoris) to reach orgasm. Indirect clitoral stimulation (for example, via vaginal penetration) may also be sufficient for female orgasm. The area near the entrance of the vagina (the lower third) contains nearly 90 percent of the vaginal nerve endings, and there are areas in the anterior vaginal wall and between the top junction of the labia minora and the urethra that are especially sensitive, but intense sexual pleasure, including orgasm, solely from vaginal stimulation is occasional or otherwise absent because the vagina has significantly fewer nerve endings than the clitoris. The prominent debate over the quantity of vaginal nerve endings began with Alfred Kinsey. Although Sigmund Freud's theory that clitoral orgasms are a prepubertal or adolescent phenomenon and that vaginal (or G-spot) orgasms are something that only physically mature females experience had been criticized before, Kinsey was the first researcher to harshly criticize the theory. Through his observations of female masturbation and interviews with thousands of women, Kinsey found that most of the women he observed and surveyed could not have vaginal orgasms, a finding that was also supported by his knowledge of sex organ anatomy. Scholar Janice M. Irvine stated that he "criticized Freud and other theorists for projecting male constructs of sexuality onto women" and "viewed the clitoris as the main center of sexual response". He considered the vagina to be "relatively unimportant" for sexual satisfaction, relaying that "few women inserted fingers or objects into their vaginas when they masturbated". Believing that vaginal orgasms are "a physiological impossibility" because the vagina has insufficient nerve endings for sexual pleasure or climax, he "concluded that satisfaction from penile penetration [is] mainly psychological or perhaps the result of referred sensation". Masters and Johnson's research, as well as Shere Hite's, generally supported Kinsey's findings about the female orgasm. Masters and Johnson were the first researchers to determine that the clitoral structures surround and extend along and within the labia. They observed that both clitoral and vaginal orgasms have the same stages of physical response, and found that the majority of their subjects could only achieve clitoral orgasms, while a minority achieved vaginal orgasms. On that basis, they argued that clitoral stimulation is the source of both kinds of orgasms, reasoning that the clitoris is stimulated during penetration by friction against its hood. The research came at the time of the second-wave feminist movement, which inspired feminists to reject the distinction made between clitoral and vaginal orgasms. Feminist Anne Koedt argued that because men "have orgasms essentially by friction with the vagina" and not the clitoral area, this is why women's biology had not been properly analyzed. "Today, with extensive knowledge of anatomy, with [C. Lombard Kelly], Kinsey, and Masters and Johnson, to mention just a few sources, there is no ignorance on the subject [of the female orgasm]," she stated in her 1970 article The Myth of the Vaginal Orgasm. She added, "There are, however, social reasons why this knowledge has not been popularized. We are living in a male society which has not sought change in women's role." Supporting an anatomical relationship between the clitoris and vagina is a study published in 2005, which investigated the size of the clitoris; Australian urologist Helen O'Connell, described as having initiated discourse among mainstream medical professionals to refocus on and redefine the clitoris, noted a direct relationship between the legs or roots of the clitoris and the erectile tissue of the clitoral bulbs and corpora, and the distal urethra and vagina while using magnetic resonance imaging (MRI) technology. While some studies, using ultrasound, have found physiological evidence of the G-spot in women who report having orgasms during vaginal intercourse, O'Connell argues that this interconnected relationship is the physiological explanation for the conjectured G-Spot and experience of vaginal orgasms, taking into account the stimulation of the internal parts of the clitoris during vaginal penetration. "The vaginal wall is, in fact, the clitoris," she said. "If you lift the skin off the vagina on the side walls, you get the bulbs of the clitoris – triangular, crescental masses of erectile tissue." O'Connell et al., having performed dissections on the female genitals of cadavers and used photography to map the structure of nerves in the clitoris, made the assertion in 1998 that there is more erectile tissue associated with the clitoris than is generally described in anatomical textbooks and were thus already aware that the clitoris is more than just its glans. They concluded that some females have more extensive clitoral tissues and nerves than others, especially having observed this in young cadavers compared to elderly ones, and therefore whereas the majority of females can only achieve orgasm by direct stimulation of the external parts of the clitoris, the stimulation of the more generalized tissues of the clitoris via vaginal intercourse may be sufficient for others. French researchers Odile Buisson Fr and Pierre Foldès reported similar findings to that of O'Connell's. In 2008, they published the first complete 3D sonography of the stimulated clitoris and republished it in 2009 with new research, demonstrating how erectile tissue of the clitoris engorges and surrounds the vagina. Based on their findings, they argued that women may be able to achieve vaginal orgasm via stimulation of the G-spot because the highly innervated clitoris is pulled closely to the anterior wall of the vagina when the woman is sexually aroused and during vaginal penetration. They assert that since the front wall of the vagina is inextricably linked with the internal parts of the clitoris, stimulating the vagina without activating the clitoris may be next to impossible. In their 2009 published study, the "coronal planes during perineal contraction and finger penetration demonstrated a close relationship between the root of the clitoris and the anterior vaginal wall". Buisson and Foldès suggested "that the special sensitivity of the lower anterior vaginal wall could be explained by pressure and movement of clitoris' root during a vaginal penetration and subsequent perineal contraction". Researcher Vincenzo Puppo, who, while agreeing that the clitoris is the center of female sexual pleasure and believing that there is no anatomical evidence of the vaginal orgasm, disagrees with O'Connell and other researchers' terminological and anatomical descriptions of the clitoris (such as referring to the vestibular bulbs as the "clitoral bulbs") and states that "the inner clitoris" does not exist because the penis cannot come in contact with the congregation of multiple nerves/veins situated until the angle of the clitoris, detailed by Kobelt, or with the roots of the clitoris, which do not have sensory receptors or erogenous sensitivity, during vaginal intercourse. Puppo's belief contrasts the general belief among researchers that vaginal orgasms are the result of clitoral stimulation; they reaffirm that clitoral tissue extends, or is at least stimulated by its bulbs, even in the area most commonly reported to be the G-spot. The G-spot is analogous to the base of the male penis and has additionally been theorized, with the sentiment from researcher Amichai Kilchevsky that because female fetal development is the "default" state in the absence of substantial exposure to male hormones and therefore the penis is essentially a clitoris enlarged by such hormones, there is no evolutionary reason why females would have an entity in addition to the clitoris that can produce orgasms. The general difficulty of achieving orgasms vaginally, which is a predicament that is likely due to nature easing the process of childbearing by drastically reducing the number of vaginal nerve endings, challenge arguments that vaginal orgasms help encourage sexual intercourse to facilitate reproduction. Supporting a distinct G-spot, however, is a study by Rutgers University, published in 2011, which was the first to map the female genitals onto the sensory portion of the brain; the scans indicated that the brain registered distinct feelings between stimulating the clitoris, the cervix and the vaginal wall – where the G-spot is reported to be – when several women stimulated themselves in a functional magnetic resonance (fMRI) machine. Barry Komisaruk, head of the research findings, stated that he feels that "the bulk of the evidence shows that the G-spot is not a particular thing" and that it is "a region, it's a convergence of many different structures". Whether the clitoris is vestigial, an adaptation, or serves a reproductive function has also been debated. Geoffrey Miller stated that Helen Fisher, Meredith Small and Sarah Blaffer Hrdy "have viewed the clitoral orgasm as a legitimate adaptation in its own right, with major implications for female sexual behavior and sexual evolution". Like Lynn Margulis and Natalie Angier, Miller believes, "The human clitoris shows no apparent signs of having evolved directly through male mate choice. It is not especially large, brightly colored, specifically shaped or selectively displayed during courtship." He contrasts this with other female species such as spider monkeys and spotted hyenas that have clitorises as long as their male counterparts. He said the human clitoris "could have evolved to be much more conspicuous if males had preferred sexual partners with larger brighter clitorises" and that "its inconspicuous design combined with its exquisite sensitivity suggests that the clitoris is important not as an object of male mate choice, but as a mechanism of female choice." While Miller stated that male scientists such as Stephen Jay Gould and Donald Symons "have viewed the female clitoral orgasm as an evolutionary side-effect of the male capacity for penile orgasm" and that they "suggested that clitoral orgasm cannot be an adaptation because it is too hard to achieve", Gould acknowledged that "most female orgasms emanate from a clitoral, rather than vaginal (or some other), site" and that his nonadaptive belief "has been widely misunderstood as a denial of either the adaptive value of female orgasm in general or even as a claim that female orgasms lack significance in some broader sense". He said that although he accepts that "clitoral orgasm plays a pleasurable and central role in female sexuality and its joys," "[a]ll these favorable attributes, however, emerge just as clearly and just as easily, whether the clitoral site of orgasm arose as a spandrel or an adaptation". He added that the "male biologists who fretted over [the adaptionist questions] simply assumed that a deeply vaginal site, nearer the region of fertilization, would offer greater selective benefit" due to their Darwinian, summum bonum beliefs about enhanced reproductive success. Similar to Gould's beliefs about adaptionist views and that "females grow nipples as adaptations for suckling, and males grow smaller unused nipples as a spandrel based upon the value of single development channels", Elisabeth Lloyd suggested that there is little evidence to support an adaptionist account of female orgasm. Meredith L. Chivers stated that "Lloyd views female orgasm as an ontogenetic leftover; women have orgasms because the urogenital neurophysiology for orgasm is so strongly selected for in males that this developmental blueprint gets expressed in females without affecting fitness" and this is similar to "males hav[ing] nipples that serve no fitness-related function." At the 2002 conference for Canadian Society of Women in Philosophy, Nancy Tuana argued that the clitoris is unnecessary in reproduction; she stated that it has been ignored because of "a fear of pleasure. It is pleasure separated from reproduction. That's the fear." She reasoned that this fear causes ignorance, which veils female sexuality. O'Connell stated, "It boils down to rivalry between the sexes: the idea that one sex is sexual and the other reproductive. The truth is that both are sexual and both are reproductive." She reiterated that the vestibular bulbs appear to be part of the clitoris and that the distal urethra and vagina are intimately related structures, although they are not erectile in character, forming a tissue cluster with the clitoris that appears to be the location of female sexual function and orgasm. Modifications to the clitoris can be intentional or unintentional. They include female genital mutilation (FGM), sex reassignment surgery (for trans men as part transitioning, which may also include clitoris enlargement), intersex surgery, and genital piercings. Use of anabolic steroids by bodybuilders and other athletes can result in significant enlargement of the clitoris in concert with other masculinizing effects on their bodies. Abnormal enlargement of the clitoris may also be referred to as clitoromegaly, but clitoromegaly is more commonly seen as a congenital anomaly of the genitalia. People taking hormones or other medications as part of a transgender transition usually experience dramatic clitoral growth; individual desires and the difficulties of phalloplasty (construction of a penis) often result in the retention of the original genitalia with the enlarged clitoris as a penis analog (metoidioplasty). However, the clitoris cannot reach the size of the penis through hormones. A surgery to add function to the clitoris, such as metoidioplasty, is an alternative to phalloplasty that permits the retention of sexual sensation in the clitoris. In clitoridectomy, the clitoris may be removed as part of a radical vulvectomy to treat cancer such as vulvar intraepithelial neoplasia; however, modern treatments favor more conservative approaches, as invasive surgery can have psychosexual consequences. Clitoridectomy more often involves parts of the clitoris being partially or completely removed during FGM, which may be additionally known as female circumcision or female genital cutting (FGC). Removing the glans of the clitoris does not mean that the whole structure is lost, since the clitoris reaches deep into the genitals. In reduction clitoroplasty, a common intersex surgery, the glans are preserved and parts of the erectile bodies are excised. Problems with this technique include loss of sensation, loss of sexual function, and sloughing of the glans. One way to preserve the clitoris with its innervations and function is to imbricate and bury the clitoral glans; however, Şenaylı et al. state that "pain during stimulus because of trapped tissue under the scarring is nearly routine. In another method, 50 percent of the ventral clitoris is removed through the level base of the clitoral shaft, and it is reported that good sensation and clitoral function are observed in follow-up"; additionally, it has "been reported that the complications are from the same as those in the older procedures for this method". Concerning females who have the condition congenital adrenal hyperplasia, the largest group requiring surgical genital correction, researcher Atilla Şenaylı stated, "The main expectations for the operations are to create a normal female anatomy, with minimal complications and improvement of life quality." Şenaylı added that "[c]osmesis, structural integrity, the coital capacity of the vagina, and absence of pain during sexual activity are the parameters to be judged by the surgeon." (Cosmesis usually refers to the surgical correction of a disfiguring defect.) He stated that although "expectations can be standardized within these few parameters, operative techniques have not yet become homogeneous. Investigators have preferred different operations for different ages of patients". Gender assessment and surgical treatment are the two main steps in intersex operations. "The first treatments for clitoromegaly were simply resection of the clitoris. Later, it was understood that the clitoris glans and sensory input are important to facilitate orgasm," stated Atilla. The clitoral glans' epithelium "has high cutaneous sensitivity, which is important in sexual responses", and it is because of this that "recession clitoroplasty was later devised as an alternative, but reduction clitoroplasty is the method currently performed." What is often referred to as "clit piercing" is the more common (and significantly less complicated) clitoral hood piercing. Since piercing the clitoris is difficult and very painful, piercing the clitoral hood is more common than piercing the clitoral shaft, owing to the small percentage of people who are anatomically suited for it. Clitoral hood piercings are usually channeled in the form of vertical piercings, and, to a lesser extent, horizontal piercings. The triangle piercing is a very deep horizontal hood piercing and is done behind the clitoris as opposed to in front of it. For styles such as the Isabella piercing, which pass through the clitoral shaft but are placed deep at the base, they provide unique stimulation and still require the proper genital build. The Isabella starts between the clitoral glans and the urethra, exiting at the top of the clitoral hood; this piercing is highly risky concerning the damage that may occur because of intersecting nerves. Persistent genital arousal disorder (PGAD) results in spontaneous, persistent, and uncontrollable genital arousal in women, unrelated to any feelings of sexual desire. Clitoral priapism, also known as clitorism, is a rare, potentially painful medical condition and is sometimes described as an aspect of PGAD. With PGAD, arousal lasts for an unusually extended period (ranging from hours to days); it can also be associated with morphometric and vascular modifications of the clitoris. Drugs may cause or affect clitoral priapism. The drug trazodone is known to cause male priapism as a side effect, but there is only one documented report that it may have caused clitoral priapism, in which case discontinuing the medication may be a remedy. Additionally, nefazodone is documented to have caused clitoral engorgement, as distinct from clitoral priapism, in one case, and clitoral priapism can sometimes start as a result of, or only after, the discontinuation of antipsychotics or selective serotonin reuptake inhibitors (SSRIs). Because PGAD is relatively rare and, as its concept apart from clitoral priapism, has only been researched since 2001, there is little research into what may cure or remedy the disorder. In some recorded cases, PGAD was caused by or caused, a pelvic arterial-venous malformation with arterial branches to the clitoris; surgical treatment was effective in these cases. In 2022, an article in The New York Times reported several instances of women experiencing reduced clitoral sensitivity or inability to orgasm following various surgical procedures, including biopsies of the vulva, pelvic mesh surgeries (sling surgeries), and labiaplasties. The Times quoted several researchers who suggest that surgeons' lack of training in clitoral anatomy and nerve distribution may have been a factor. Concerning historical and modern perceptions of the clitoris, the clitoris, and the penis was considered equivalent by some scholars for more than 2,500 years in all respects except their arrangement. Due to it being frequently omitted from, or misrepresented in, historical and contemporary anatomical texts, it was also subject to a continual cycle of male scholars claiming to have discovered it. The ancient Greeks, ancient Romans, and Greek and Roman generations up to and throughout the Renaissance, were aware that male and female sex organs are anatomically similar, but prominent anatomists such as Galen (129 – c. 200 AD) and Vesalius (1514–1564) regarded the vagina as the structural equivalent of the penis, except for being inverted; Vesalius argued against the existence of the clitoris in normal women, and his anatomical model described how the penis corresponds with the vagina, without a role for the clitoris. Ancient Greek and Roman sexuality additionally designated penetration as "male-defined" sexuality. The term tribas, or tribade, was used to refer to a woman or intersex individual who actively penetrated another person (male or female) through the use of the clitoris or a dildo. As any sexual act was believed to require that one of the partners be "phallic" and that therefore sexual activity between women was impossible without this feature, mythology popularly associated lesbians with either having enlarged clitorises or as incapable of enjoying sexual activity without the substitution of a phallus. In 1545, Charles Estienne was the first writer to identify the clitoris in a work based on dissection, but he concluded that it had a urinary function. Following this study, Realdo Colombo (also known as Matteo Renaldo Colombo), a lecturer in surgery at the University of Padua, Italy, published a book called De re anatomica in 1559, in which he describes the "seat of woman's delight". In his role as researcher, Colombo concluded, "Since no one has discerned these projections and their workings, if it is permissible to give names to things discovered by me, it should be called the love or sweetness of Venus.", about the mythological Venus, goddess of erotic love. Colombo's claim was disputed by his successor at Padua, Gabriele Falloppio (discoverer of the fallopian tube), who claimed that he was the first to discover the clitoris. In 1561, Falloppio stated, "Modern anatomists have entirely neglected it ... and do not say a word about it ... and if others have spoken of it, know that they have taken it from me or my students." This caused an upset in the European medical community, and, having read Colombo's and Falloppio's detailed descriptions of the clitoris, Vesalius stated, "It is unreasonable to blame others for incompetence on the basis of some sport of nature you have observed in some women and you can hardly ascribe this new and useless part, as if it were an organ, to healthy women." He concluded, "I think that such a structure appears in hermaphrodites who otherwise have well-formed genitals, as Paul of Aegina describes, but I have never once seen in any woman a penis (which Avicenna called albaratha and the Greeks called an enlarged nympha and classed as an illness) or even the rudiments of a tiny phallus." The average anatomist had difficulty challenging Galen's or Vesalius' research; Galen was the most famous physician of the Greek era and his works were considered the standard of medical understanding up to and throughout the Renaissance (i.e. for almost two thousand years), and various terms being used to describe the clitoris seemed to have further confused the issue of its structure. In addition to Avicenna's naming it the albaratha or virga ("rod") and Colombo's calling it the sweetness of Venus, Hippocrates used the term columella ("little pillar'"), and Albucasis, an Arabic medical authority, named it tentigo ("tension"). The names indicated that each description of the structures was about the body and glans of the clitoris but usually the glans. It was additionally known to the Romans, who named it (vulgar slang) landica. However, Albertus Magnus, one of the most prolific writers of the Middle Ages, felt that it was important to highlight "homologies between male and female structures and function" by adding "a psychology of sexual arousal" that Aristotle had not used to detail the clitoris. While in Constantine's treatise Liber de coitu, the clitoris is referred to a few times, Magnus gave an equal amount of attention to male and female organs. Like Avicenna, Magnus also used the word virga for the clitoris, but employed it for the male and female genitals; despite his efforts to give equal ground to the clitoris, the cycle of suppression and rediscovery of the organ continued, and a 16th-century justification for clitoridectomy appears to have been confused by hermaphroditism and the imprecision created by the word nymphae substituted for the word clitoris. Nymphotomia was a medical operation to excise an unusually large clitoris, but what was considered "unusually large" was often a matter of perception. The procedure was routinely performed on Egyptian women, due to physicians such as Jacques Daléchamps who believed that this version of the clitoris was "an unusual feature that occurred in almost all Egyptian women [and] some of ours, so that when they find themselves in the company of other women, or their clothes rub them while they walk or their husbands wish to approach them, it erects like a male penis and indeed they use it to play with other women, as their husbands would do ... Thus the parts are cut". Caspar Bartholin, a 17th-century Danish anatomist, dismissed Colombo's and Falloppio's claims that they discovered the clitoris, arguing that the clitoris had been widely known to medical science since the second century. Although 17th-century midwives recommended to men and women that women should aspire to achieve orgasms to help them get pregnant for general health and well-being and to keep their relationships healthy, debate about the importance of the clitoris persisted, notably in the work of Regnier de Graaf in the 17th century and Georg Ludwig Kobelt in the 19th. Like Falloppio and Bartholin, de Graaf criticized Colombo's claim of having discovered the clitoris; his work appears to have provided the first comprehensive account of clitoral anatomy. "We are extremely surprised that some anatomists make no more mention of this part than if it did not exist at all in the universe of nature," he stated. "In every cadaver, we have so far dissected we have found it quite perceptible to sight and touch." De Graaf stressed the need to distinguish nympha from clitoris, choosing to "always give [the clitoris] the name clitoris" to avoid confusion; this resulted in the frequent use of the correct name for the organ among anatomists, but considering that nympha was also varied in its use and eventually became the term specific to the labia minora, more confusion ensued. Debate about whether orgasm was even necessary for women began in the Victorian era, and Freud's 1905 theory about the immaturity of clitoral orgasms (see above) negatively affected women's sexuality throughout most of the 20th century. Toward the end of World War I, a maverick British MP named Noel Pemberton Billing published an article entitled "The Cult of the Clitoris", furthering his conspiracy theories and attacking the actress Maud Allan and Margot Asquith, wife of the prime minister. The accusations led to a sensational libel trial, which Billing eventually won; Philip Hoare reports that Billing argued that "as a medical term, 'clitoris' would only be known to the 'initiated', and was incapable of corrupting moral minds". Jodie Medd argues regarding "The Cult of the Clitoris" that "the female non-reproductive but desiring body [...] simultaneously demands and refuses interpretative attention, inciting scandal through its very resistance to representation." From the 18th to the 20th century, especially during the 20th, details of the clitoris from various genital diagrams presented in earlier centuries were omitted from later texts. The full extent of the clitoris was alluded to by Masters and Johnson in 1966, but in such a muddled fashion that the significance of their description became obscured; in 1981, the Federation of Feminist Women's Health Clinics (FFWHC) continued this process with anatomically precise illustrations identifying 18 structures of the clitoris. Despite the FFWHC's illustrations, Josephine Lowndes Sevely, in 1987, described the vagina as more of the counterpart of the penis. Concerning other beliefs about the clitoris, Hite (1976 and 1981) found that, during sexual intimacy with a partner, clitoral stimulation was more often described by women as foreplay than as a primary method of sexual activity, including orgasm. Further, although the FFWHC's work significantly propelled feminist reformation of anatomical texts, it did not have a general impact. Helen O'Connell's late 1990s research motivated the medical community to start changing the way the clitoris is anatomically defined. O'Connell describes typical textbook descriptions of the clitoris as lacking detail and including inaccuracies, such as older and modern anatomical descriptions of the female human urethral and genital anatomy having been based on dissections performed on elderly cadavers whose erectile (clitoral) tissue had shrunk. She instead credits the work of Georg Ludwig Kobelt as the most comprehensive and accurate description of clitoral anatomy. MRI measurements, which provide a live and multi-planar method of examination, now complement the FFWHC's, as well as O'Connell's, research efforts concerning the clitoris, showing that the volume of clitoral erectile tissue is ten times that which is shown in doctors' offices and anatomy textbooks. In Bruce Bagemihl's survey of The Zoological Record (1978–1997) – which contains over a million documents from over 6,000 scientific journals – 539 articles focusing on the penis were found, while seven were found focusing on the clitoris. In 2000, researchers Shirley Ogletree and Harvey Ginsberg concluded that there is a general neglect of the word clitoris in the common vernacular. They looked at the terms used to describe genitalia in the PsycINFO database from 1887 to 2000 and found that penis was used in 1,482 sources, vagina in 409, while clitoris was only mentioned in 83. They additionally analyzed 57 books listed in a computer database for sex instruction. In the majority of the books, penis was the most commonly discussed body part – mentioned more than clitoris, vagina, and uterus put together. They last investigated terminology used by college students, ranging from Euro-American (76%/76%), Hispanic (18%/14%), and African American (4%/7%), regarding the students' beliefs about sexuality and knowledge on the subject. The students were overwhelmingly educated to believe that the vagina is the female counterpart of the penis. The authors found that the student's belief that the inner portion of the vagina is the most sexually sensitive part of the female body correlated with negative attitudes toward masturbation and strong support for sexual myths. A study in 2005 reported that, among a sample of undergraduate students, the most frequently cited sources for knowledge about the clitoris were school and friends, and that this was associated with the least tested knowledge. Knowledge of the clitoris by self-exploration was the least cited, but "respondents correctly answered, on average, three of the five clitoral knowledge measures". The authors stated that "[k]nowledge correlated significantly with the frequency of women's orgasm in masturbation but not partnered sex" and that their "results are discussed in light of gender inequality and a social construction of sexuality, endorsed by both men and women, that privileges men's sexual pleasure over women's, such that orgasm for women is pleasing but ultimately incidental." They concluded that part of the solution to remedying "this problem" requires that males and females are taught more about the clitoris than is currently practiced. The humanitarian group Clitoraid launched the first annual International Clitoris Awareness Week, from 6 to 12 May in 2015. Clitoraid spokesperson Nadine Gary stated that the group's mission is to raise public awareness about the clitoris because it has "been ignored, vilified, made taboo, and considered sinful and shameful for centuries". Odile Fillod created a 3D printable, open source, full-size model of the clitoris, for use in a set of anti-sexist videos she had been commissioned to produce. Fillod was interviewed by Stephanie Theobald, whose article in The Guardian stated that the 3D model would be used for sex education in French schools, from primary to secondary level, from September 2016 onwards; this was not the case, but the story went viral across the world. A questionnaire in a 2019 study was administered to a sample of educational sciences postgraduate students to trace the level of their knowledge concerning the organs of the female and male reproductive system. The authors reported that about two-thirds of the students failed to name external female genitals, such as the clitoris and labia, even after detailed pictures were provided to them. An analysis in 2022 reported that the clitoris is mentioned in only one out of 113 Greek secondary education textbooks used in biology classes from the 1870s to present. New York artist Sophia Wallace started work in 2012 on a multimedia project to challenge misconceptions about the clitoris. Based on O'Connell's 1998 research, Wallace's work emphasizes the sheer scope and size of the human clitoris. She says that ignorance of this still seems to be pervasive in modern society. "It is a curious dilemma to observe the paradox that on the one hand, the female body is the primary metaphor for sexuality, its use saturates advertising, art, and the mainstream erotic imaginary," she said. "Yet, the clitoris, the true female sexual organ, is virtually invisible." The project is called Cliteracy and it includes a "clit rodeo", which is interactive, climb-on model of a giant golden clitoris, including its inner parts, produced with the help of sculptor Kenneth Thomas. "It's been a showstopper wherever it's been shown. People are hungry to be able to talk about this," Wallace said. "I love seeing men standing up for the clit [...] Cliteracy is about not having one's body controlled or legislated [...] Not having access to the pleasure that is your birthright is a deeply political act." Another project started in New York, in 2016, street art that has since spread to almost 100 cities: Clitorosity, a "community-driven effort to celebrate the full structure of the clitoris", combining chalk drawings and words to spark interaction and conversation with passers-by, which the team documents on social media. In 2016, Lori-Malépart Traversy made an animated documentary about the unrecognized anatomy of the clitoris. Alli Sebastian Wolf created a golden 100∶1 scale model anatomical of a clitoris in 2017, called the Glitoris and said, she hopes knowledge of the clitoris will soon become so uncontroversial that making art about them would be as irrelevant as making art about penises. Other projects listed by the BBC include Clito Clito, body-positive jewellery made in Berlin; Clitorissima, a documentary intended to normalize mother-daughter conversations about the clitoris; and a ClitArt festival in London, encompassing spoken word performances as well as visual art. French art collective Les Infemmes (a pun on "infamous" and "women") published a fanzine whose title can be translated as "The Clit Cheatsheet". Significant controversy surrounds female genital mutilation (FGM), with the World Health Organization (WHO) being one of many health organizations that have campaigned against the procedures on behalf of human rights, stating that "FGM has no health benefits" and that it is "a violation of the human rights of girls and women" which "reflects deep-rooted inequality between the sexes". The practice has existed at one point or another in almost all human civilizations, most commonly to exert control over the sexual behavior, including masturbation, of girls and women, but also to change the clitoris' appearance. Custom and tradition are the most frequently cited reasons for FGM, with some cultures believing that not performing it has the possibility of disrupting the cohesiveness of their social and political systems, such as FGM also being a part of a girl's initiation into adulthood. Often, a girl is not considered an adult in an FGM-practicing society unless she has undergone FGM, and the "removal of the clitoris and labia – viewed by some as the male parts of a woman's body – is thought to enhance the girl's femininity, often synonymous with docility and obedience". Female genital mutilation is carried out in several societies, especially in Africa, with 85 percent of genital mutilations performed in Africa consisting of clitoridectomy or excision, and to a lesser extent in other parts of the Middle East and Southeast Asia, on girls from a few days old to mid-adolescent, often to reduce the sexual desire to preserve vaginal virginity. The practice of FGM has spread globally, as immigrants from Asia, Africa, and the Middle East bring the custom with them. In the United States, it is sometimes practiced on girls born with a clitoris that is larger than usual. Comfort Momoh, who specializes in the topic of FGM, states that FGM might have been "practiced in ancient Egypt as a sign of distinction among the aristocracy"; there are reports that traces of infibulation are on Egyptian mummies. FGM is still routinely practiced in Egypt. Greenberg et al. report that "one study found that 97 percent of married women in Egypt had had some form of genital mutilation performed." Amnesty International estimated in 1997 that more than two million FGM procedures are performed every year. Although the clitoris exists in all mammal species, few detailed studies of the anatomy of the clitoris in non-humans exist. Studies have been done on the clitoris of cats, sheep and mice. The clitoris is especially developed in fossas, apes, lemurs, moles, and, like the penis in many non-human placental mammals, often contains a small bone. In females, this bone is known as the os clitoridis. Many species of Talpid moles exhibit peniform clitorises that are tunneled by the urethra and are found to have erectile tissue. Studies of Spanish moles have revealed that the female gonads develop in a "testis-like pattern". The clitoris exists in turtles, ostriches, crocodiles, and in species of birds in which the male counterpart has a penis. Some intersex female bears mate and give birth through the tip of the clitoris; these species are grizzly bears, brown bears, American black bears and polar bears. Although the bears have been described as having "a birth canal that runs through the clitoris rather than forming a separate vagina" (a feature that is estimated to make up 10 to 20 percent of the bears' population), scientists state that female spotted hyenas are the only non-hermaphroditic female mammals devoid of an external vaginal opening, and whose sexual anatomy is distinct from usual intersex cases. In spider monkeys, the clitoris is especially developed and has an interior passage, or urethra, that makes it almost identical to the penis, and it retains and distributes urine droplets as the female spider monkey moves around. Scholar Alan F. Dixson stated that this urine "is voided at the bases of the clitoris, flows down the shallow groove on its perineal surface, and is held by the skin folds on each side of the groove". Because spider monkeys of South America have pendulous and erectile clitorises long enough to be mistaken for a penis, researchers and observers of the species look for a scrotum to determine the animal's sex; a similar approach is to identify scent-marking glands that may also be present on the clitoris. The clitoris erects in squirrel monkeys during dominance displays, which indirectly influences the squirrel monkeys' reproductive success. The clitoris of bonobos is larger and more externalized than in most mammals; Natalie Angier said that a young adolescent "female bonobo is maybe half the weight of a human teenager, but her clitoris is three times bigger than the human equivalent, and visible enough to waggle unmistakably as she walks". Female bonobos often engage in the practice of genital-genital (GG) rubbing, which is the non-human form of tribadism that human females engage in. Ethologist Jonathan Balcombe stated that female bonobos rub their clitorises together rapidly for ten to twenty seconds, and this behavior, "which may be repeated in rapid succession, is usually accompanied by grinding, shrieking, and clitoral engorgement"; he added that, on average, they engage in this practice "about once every two hours", and as bonobos sometimes mate face-to-face, "evolutionary biologist Marlene Zuk has suggested that the position of the clitoris in bonobos and some other primates has evolved to maximize stimulation during sexual intercourse". Many strepsirrhine species exhibit elongated clitorises that are either fully or partially tunneled by the urethra, including mouse lemurs, dwarf lemurs, all Eulemur species, lorises and galagos. Some of these species also exhibit a membrane seal across the vagina that closes the vaginal opening during the non-mating seasons, most notably mouse and dwarf lemurs. The clitoral morphology of the ring-tailed lemur is the most well-studied. They are described as having "elongated, pendulous clitorises that are [fully] tunneled by a urethra". The urethra is surrounded by erectile tissue, which allows for significant swelling during breeding seasons, but this erectile tissue differs from the typical male corpus spongiosum. Non-pregnant adult ring-tailed females do not show higher testosterone levels than males, but they do exhibit higher A4 and estrogen levels during seasonal aggression. During pregnancy, estrogen, A4, and testosterone levels are raised, but female fetuses are still "protected" from excess testosterone. These "masculinized" genitalia are often found alongside other traits, such as female-dominated social groups, reduced sexual dimorphism that makes females the same size as males, and even ratios of sexes in adult populations. This phenomenon that has been dubbed the "lemur syndrome". A 2014 study of Eulemur masculinization proposed that behavioral and morphological masculinization in female lemuriformes is an ancestral trait that likely emerged after their split from lorisiformes. While female spotted hyenas are sometimes referred to as hermaphrodites or as intersex, and scientists of ancient and later historical times believed that they were hermaphrodites, modern scientists do not refer to them as such. That designation is typically reserved for those who simultaneously exhibit features of both sexes; the genetic makeup of female spotted hyenas "are clearly distinct" from male spotted hyenas. Female spotted hyenas have a clitoris 90 percent as long and the same diameter as a male penis (171 millimeters long and 22 millimeters in diameter), and this pseudo-penis' formation seems largely androgen-independent because it appears in the female fetus before differentiation of the fetal ovary and adrenal gland. The spotted hyenas have a highly erectile clitoris, complete with a false scrotum; author John C. Wingfield stated that "the resemblance to male genitalia is so close that sex can be determined with confidence only by palpation of the scrotum". The pseudo-penis can also be distinguished from the males' genitalia by its greater thickness and more rounded glans. The female possesses no external vagina, as the labia are fused to form a pseudo-scrotum. In the females, this scrotum consists of soft adipose tissue. Like male spotted hyenas with regard to their penises, the female spotted hyenas have small penile spines on the head of their clitorises, which scholar Catherine Blackledge [pl] said makes "the clitoris tip feel like soft sandpaper". She added that the clitoris "extends away from the body in a sleek and slender arc, measuring, on average, over 17 cm from root to tip. Just like a penis, [it] is fully erectile, raising its head in hyena greeting ceremonies, social displays, games of rough and tumble or when sniffing out peers". Due to their higher levels of androgen exposure during fetal development, the female hyenas are significantly more muscular and aggressive than their male counterparts; social-wise, they are of higher rank than the males, being dominant or dominant and alpha, and the females who have been exposed to higher levels of androgen than average become higher-ranking than their female peers. Subordinate females lick the clitorises of higher-ranked females as a sign of submission and obedience, but females also lick each other's clitorises as a greeting or to strengthen social bonds; in contrast, while all males lick the clitorises of dominant females, the females will not lick the penises of males because males are considered to be of lowest rank. The urethra and vagina of the female spotted hyena exit through the clitoris, allowing the females to urinate, copulate and give birth through this organ. This trait makes mating more laborious for the male than in other mammals, and also makes attempts to sexually coerce (physically force sexual activity on) females futile. Joan Roughgarden, an ecologist and evolutionary biologist, said that because the hyena's clitoris is higher on the belly than the vagina in most mammals, the male hyena "must slide his rear under the female when mating so that his penis lines up with [her clitoris]". In an action similar to pushing up a shirtsleeve, the "female retracts the [pseudo-penis] on itself, and creates an opening into which the male inserts his own penis". The male must practice this act, which can take a couple of months to successfully perform. Female spotted hyenas exposed to larger doses of androgen have significantly damaged ovaries, making it difficult to conceive. After giving birth, the pseudo-penis is stretched and loses much of its original aspects; it becomes a slack-walled and reduced prepuce with an enlarged orifice with split lips. Approximately 15% of the females die during their first time giving birth, and over 60% of their species' firstborn young die. A 2006 Baskin et al. study concluded, "The basic anatomical structures of the corporeal bodies in both sexes of humans and spotted hyenas were similar. As in humans, the dorsal nerve distribution was unique in being devoid of nerves at the 12 o'clock position in the penis and clitoris of the spotted hyena" and that "[d]orsal nerves of the penis/clitoris in humans and male spotted hyenas tracked along both sides of the corporeal body to the corpus spongiosum at the 5 and 7 o'clock positions. The dorsal nerves penetrated the corporeal body and distally the glans in the hyena", and in female hyenas, "the dorsal nerves fanned out laterally on the clitoral body. Glans morphology was different in appearance in both sexes, being wide and blunt in the female and tapered in the male".	[ { "paragraph_id": 0, "text": "The clitoris (/ˈklɪtərɪs/ or /klɪˈtɔːrɪs/ ; pl.: clitorises or clitorides) is a female sex organ present in mammals, ostriches, and a limited number of other animals. In humans, the visible portion – the glans – is at the front junction of the labia minora (inner lips), above the opening of the urethra. Unlike the penis, the male homologue (equivalent) to the clitoris, it usually does not contain the distal portion (or opening) of the urethra and is therefore not used for urination. In most species, the clitoris lacks any reproductive function. While few animals urinate through the clitoris or use it reproductively, the spotted hyena, which has an especially large clitoris, urinates, mates, and gives birth via the organ. Some other mammals, such as lemurs and spider monkeys, also have a large clitoris.", "title": "" }, { "paragraph_id": 1, "text": "The clitoris is the human female's most sensitive erogenous zone and generally the primary anatomical source of human female sexual pleasure. The clitoris is a complex structure, and its size and sensitivity can vary. The glans (head) of the human clitoris is roughly the size and shape of a pea and is estimated to have 8,000 and possibly more than 10,000 sensory nerve endings.", "title": "" }, { "paragraph_id": 2, "text": "Sexological, medical, and psychological debate has focused on the clitoris, and it has been subject to social constructionist analyses and studies. Such discussions range from anatomical accuracy, gender inequality, female genital mutilation, and orgasmic factors and their physiological explanation for the G-spot. Although, in humans, the only known purpose of the clitoris is to provide sexual pleasure, whether the clitoris is vestigial, an adaptation, or serves a reproductive function has been debated. Social perceptions of the clitoris include the significance of its role in female sexual pleasure, assumptions about its true size and depth, and varying beliefs regarding genital modification such as clitoris enlargement, clitoris piercing and clitoridectomy. Genital modification may be for aesthetic, medical or cultural reasons.", "title": "" }, { "paragraph_id": 3, "text": "Knowledge of the clitoris is significantly affected by cultural perceptions of the organ. Studies suggest that knowledge of its existence and anatomy is scant in comparison with that of other sexual organs and that more education about it could help alleviate social stigmas associated with the female body and female sexual pleasure. Examples of stigma include the ideas that the clitoris and vulva in general are visually unappealing, that female masturbation is taboo, or that men should be expected to master and control women's orgasms.", "title": "" }, { "paragraph_id": 4, "text": "The Oxford English Dictionary states that the word clitoris likely has its origin in the Ancient Greek κλειτορίς, kleitoris, perhaps derived from the verb κλείειν, kleiein, \"to shut\". Clitoris is also Greek for the word key, \"indicating that the ancient anatomists considered it the key\" to female sexuality. In addition to key, the Online Etymology Dictionary suggests other Greek candidates for the word's etymology include a noun meaning \"latch\" or \"hook\"; a verb meaning \"to touch or titillate lasciviously\", \"to tickle\" (one German synonym for the clitoris is der Kitzler, \"the tickler\"), although this verb is more likely derived from \"clitoris\"; and a word meaning \"side of a hill\", from the same root as \"climax\". The Oxford English Dictionary also states that the shortened form \"clit\", the first occurrence of which was noted in the United States, has been used in print since 1958: until then, the common abbreviation was \"clitty\".", "title": "Etymology" }, { "paragraph_id": 5, "text": "The plural forms are clitorises in English and clitorides in Latin. The Latin genitive is clitoridis, as in \"glans clitoridis\". In medical and sexological literature, the clitoris is sometimes referred to as \"the female penis\" or pseudo-penis, and the term clitoris is commonly used to refer to the glans alone; partially because of this, there have been various terms for the organ that have historically confused its anatomy.", "title": "Etymology" }, { "paragraph_id": 6, "text": "In mammals, sexual differentiation is determined by the sperm that carries either an X or a Y (male) chromosome. The Y chromosome contains a sex-determining gene (SRY) that encodes a transcription factor for the protein TDF (testis determining factor) and triggers the creation of testosterone and anti-Müllerian hormone for the embryo's development into a male. This differentiation begins about eight or nine weeks after conception. Some sources state that it continues until the twelfth week, while others state that it is evident by the thirteenth week and that the sex organs are fully developed by the sixteenth week.", "title": "Structure" }, { "paragraph_id": 7, "text": "The clitoris develops from a phallic outgrowth in the embryo called the genital tubercle. Initially undifferentiated, the tubercle develops into either a clitoris or penis during the development of the reproductive system depending on exposure to androgens (which are primarily male hormones). The clitoris forms from the same tissues that become the glans and shaft of the penis, and this shared embryonic origin makes these two organs homologous (different versions of the same structure).", "title": "Structure" }, { "paragraph_id": 8, "text": "If exposed to testosterone, the genital tubercle elongates to form the penis. By fusion of the urogenital folds – elongated spindle-shaped structures that contribute to the formation of the urethral groove on the belly aspect of the genital tubercle – the urogenital sinus closes completely and forms the spongy urethra, and the labioscrotal swellings unite to form the scrotum. In the absence of testosterone, the genital tubercle allows for the formation of the clitoris; the initially rapid growth of the phallus gradually slows and the clitoris is formed. The urogenital sinus persists as the vestibule of the vagina, the two urogenital folds form the labia minora, and the labioscrotal swellings enlarge to form the labia majora, completing the female genitalia. A rare condition that can develop from higher than average androgen exposure is clitoromegaly.", "title": "Structure" }, { "paragraph_id": 9, "text": "The clitoris contains external and internal components. It consists of the glans, the body (which is composed of two erectile structures known as the corpora cavernosa), and two crura. It has a hood formed by the labia minora (inner lips). It also has vestibular or clitoral bulbs. The frenulum of the clitoris is beneath the glans. The clitoral body supports the glans, and its shape can be seen and felt through the clitoral hood.", "title": "Structure" }, { "paragraph_id": 10, "text": "Research indicates that clitoral tissue extends into the vagina's anterior wall. Şenaylı et al. said that the histological evaluation of the clitoris, \"especially of the corpora cavernosa, is incomplete because for many years the clitoris was considered a rudimentary and nonfunctional organ.\" They added that Baskin and colleagues examined the clitoris' masculinization after dissection and using imaging software after Masson chrome staining, put the serial dissected specimens together; this revealed that the nerves of the clitoris surround the whole clitoral body.", "title": "Structure" }, { "paragraph_id": 11, "text": "The clitoris, vestibular bulbs, labia minora, and urethra involve two histologically distinct types of vascular tissue (tissue related to blood vessels), the first of which is trabeculated, erectile tissue innervated by the cavernous nerves. The trabeculated tissue has a spongy appearance; along with blood, it fills the large, dilated vascular spaces of the clitoris and the bulbs. Beneath the epithelium of the vascular areas is smooth muscle. As indicated by Yang et al.'s research, it may also be that the urethral lumen (the inner open space or cavity of the urethra), which is surrounded by a spongy tissue, has tissue that \"is grossly distinct from the vascular tissue of the clitoris and bulbs, and on macroscopic observation, is paler than the dark tissue\" of the clitoris and bulbs. The second type of vascular tissue is non-erectile, which may consist of blood vessels that are dispersed within a fibrous matrix and have only a minimal amount of smooth muscle.", "title": "Structure" }, { "paragraph_id": 12, "text": "Highly innervated, the clitoral glans (glans clitoridis) exists at the tip of the clitoral body as a fibro-vascular cap and is usually the size and shape of a pea, although it is sometimes much larger or smaller. It is homologous to the male glans penis. The clitoral glans, or the entire clitoris, is estimated to have 8,000 and possibly 10,000 or more, sensory nerve endings. Research conflicts on whether or not the glans is composed of erectile or non-erectile tissue. Although the clitoral body becomes engorged with blood upon sexual arousal, erecting the clitoral glans, some sources describe the clitoral glans and labia minora as composed of non-erectile tissue; this is especially the case for the glans. They state that the clitoral glans and labia minora have blood vessels that are dispersed within a fibrous matrix and have only a minimal amount of smooth muscle, or that the clitoral glans is \"a midline, densely neural, non-erectile structure\".", "title": "Structure" }, { "paragraph_id": 13, "text": "Other descriptions of the glans assert that it is composed of erectile tissue and that erectile tissue is present within the labia minora. The glans may be noted as having glandular vascular spaces that are not as prominent as those in the clitoral body, with the spaces being separated more by smooth muscle than in the body and crura. Adipose tissue is absent in the labia minora, but the organ may be described as being made up of dense connective tissue, erectile tissue and elastic fibers.", "title": "Structure" }, { "paragraph_id": 14, "text": "The clitoral frenulum or frenum (frenulum clitoridis and crus glandis clitoridis in Latin) is a band of tissue formed between the undersurface of the glans and the top ends of the labia minora. It is homologous to the penile frenulum in males. The frenulum's main function is to maintain the clitoris in its innate position.", "title": "Structure" }, { "paragraph_id": 15, "text": "The clitoral body (also known as the corpus clitoridis or shaft of the clitoris) forms a wishbone-shaped structure containing the corpora cavernosa – a pair of sponge-like regions of erectile tissue that contain most of the blood in the clitoris during clitoral erection. It is homologous to the penile shaft in the male. The two corpora forming the clitoral body are surrounded by thick fibro-elastic tunica albuginea, literally meaning \"white covering\", connective tissue. These corpora are separated incompletely from each other in the midline by a fibrous pectiniform septum – a comblike band of connective tissue extending between the corpora cavernosa.", "title": "Structure" }, { "paragraph_id": 16, "text": "The clitoral body extends up to several centimeters before reversing direction and branching, resulting in an inverted \"V\" shape that extends as a pair of crura (\"legs\"). The crura are the proximal portions of the arms of the wishbone. Ending at the glans of the clitoris, the tip of the body bends anteriorly away from the pubis. Each crus (singular form of crura) is attached to the corresponding ischial ramus – extensions of the copora beneath the descending pubic rami. Concealed behind the labia minora, the crura ends with attachment at or just below the middle of the pubic arch. Associated are the urethral sponge, perineal sponge, a network of nerves and blood vessels, the suspensory ligament of the clitoris, muscles and the pelvic floor.", "title": "Structure" }, { "paragraph_id": 17, "text": "There is no identified correlation between the size of the clitoral glans or clitoris as a whole, and a woman's age, height, weight, use of hormonal contraception, or being post-menopausal, although women who have given birth may have significantly larger clitoral measurements. Centimeter (cm) and millimeter (mm) measurements of the clitoris show variations in its size. The clitoral glans have been cited as typically varying from 2 mm to 1 cm and usually being estimated at four to five mm in both the transverse and longitudinal planes.", "title": "Structure" }, { "paragraph_id": 18, "text": "A 1992 study concluded that the total clitoral length, including glans and body, is 16.0 ± 4.3 mm (0.63 ± 0.17 in), where 16 mm (0.63 in) is the mean and 4.3 mm (0.17 in) is the standard deviation. Concerning other studies, researchers from the Elizabeth Garrett Anderson and Obstetric Hospital in London measured the labia and other genital structures of 50 women from the age of 18 to 50, with a mean age of 35.6., from 2003 to 2004, and the results given for the clitoral glans were 3–10 mm for the range and 5.5 [1.7] mm for the mean. Other research indicates that the clitoral body can measure 5–7 centimetres (2.0–2.8 in) in length, while the clitoral body and crura together can be 10 centimetres (3.9 in) or more in length.", "title": "Structure" }, { "paragraph_id": 19, "text": "The clitoral hood projects at the front of the labia commissure, where the edges of the labia majora (outer lips) meet at the base of the pubic mound; it is partially formed by fusion of the upper part of the external folds of the labia minora (inner lips) and covers the glans and external shaft. There is considerable variation in how much of the glans protrudes from the hood and how much is covered by it, ranging from completely covered to fully exposed, and tissue of the labia minora also encircles the base of the glans.", "title": "Structure" }, { "paragraph_id": 20, "text": "The vestibular bulbs are more closely related to the clitoris than the vestibule because of the similarity of the trabecular and erectile tissue within the clitoris and bulbs, and the absence of trabecular tissue in other genital organs, with the erectile tissue's trabecular nature allowing engorgement and expansion during sexual arousal. The vestibular bulbs are typically described as lying close to the crura on either side of the vaginal opening; internally, they are beneath the labia majora. When engorged with blood, they cuff the vaginal opening and cause the vulva to expand outward. Although several texts state that they surround the vaginal opening, Ginger et al. state that this does not appear to be the case and tunica albuginea does not envelop the erectile tissue of the bulbs. In Yang et al.'s assessment of the bulbs' anatomy, they conclude that the bulbs \"arch over the distal urethra, outlining what might be appropriately called the 'bulbar urethra' in women.\"", "title": "Structure" }, { "paragraph_id": 21, "text": "The clitoris and penis generally have the same anatomical structure, although the distal portion (or opening) of the urethra is absent in the clitoris of humans and most other animals. The idea that males have clitorises was suggested in 1987 by researcher Josephine Lowndes Sevely theorized that the male corpora cavernosa (a pair of sponge-like regions of erectile tissue that contain most of the blood in the penis during penile erection) are the true counterpart of the clitoris. She argued that \"the male clitoris\" is directly beneath the rim of the glans penis, where the frenulum of prepuce of the penis (a fold of the prepuce) is located, and proposed that this area be called the \"Lownde's crown\". Her theory and proposal, though acknowledged in anatomical literature, did not materialize in anatomy books. Modern anatomical texts show that the clitoris displays a hood that is the equivalent of the penis' foreskin, which covers the glans. It also has a shaft that is attached to the glans. The male corpora cavernosa are homologous to the corpus cavernosum clitoridis (the female cavernosa), the bulb of the penis is homologous to the vestibular bulbs beneath the labia minora, the scrotum is homologous to the labia majora, and the penile raphe is homologous to the labia minora.", "title": "Structure" }, { "paragraph_id": 22, "text": "Upon anatomical study, the penis can be described as a clitoris that has been mostly pulled out of the body and grafted on top of a significantly smaller piece of spongiosum containing the urethra. Concerning nerve endings, the human clitoris' estimated number of nerve endings (8,000 to over 10,000) is commonly cited as being twice as many as the nerve endings found in the human penis (for its glans or body as a whole) and as more than any other part of the human body. These reports sometimes conflict with other sources on clitoral anatomy or those concerning the nerve endings in the human penis. For example, while some sources estimate that the human penis has 4,000 nerve endings, other sources state that the glans or the entire penile structure have the same amount of nerve endings as the clitoral glans. Some sources state that in contrast to the glans penis, the clitoral glans lacks smooth muscle within its fibrovascular cap and is thus differentiated from the erectile tissues of the clitoris and bulbs; additionally, bulb size varies and may be dependent on age and estrogenization. While the bulbs are considered the equivalent of the male spongiosum, they do not completely encircle the urethra.", "title": "Structure" }, { "paragraph_id": 23, "text": "The thin corpus spongiosum of the penis runs along the underside of the penile shaft, enveloping the urethra, and expands at the end to form the glans. It partially contributes to erection, which is primarily caused by the two corpora cavernosa that comprise the bulk of the shaft; like the female cavernosa, the male cavernosa soak up blood and become erect when sexually excited. The male corpora cavernosa taper off internally on reaching the spongiosum head. Concerning the Y-shape of the cavernosa – crown, body, and legs – the body accounts for much more of the structure in men, and the legs are stubbier; typically, the cavernosa are longer and thicker in males than in females.", "title": "Structure" }, { "paragraph_id": 24, "text": "The clitoris has an abundance of nerve endings, and is the human female's most sensitive erogenous zone and generally the primary anatomical source of human female sexual pleasure. When sexually stimulated, it may incite female sexual arousal. Sexual stimulation, including arousal, may result from mental stimulation, foreplay with a sexual partner, or masturbation, and can lead to orgasm. The most effective sexual stimulation of the organ is usually manually or orally (cunnilingus), which is often referred to as direct clitoral stimulation; in cases involving sexual penetration, these activities may also be referred to as additional or assisted clitoral stimulation.", "title": "Function" }, { "paragraph_id": 25, "text": "Direct clitoral stimulation involves physical stimulation to the external anatomy of the clitoris – glans, hood, and the external shaft. Stimulation of the labia minora (inner lips), due to its external connection with the glans and hood, may have the same effect as direct clitoral stimulation. Though these areas may also receive indirect physical stimulation during sexual activity, such as when in friction with the labia majora (outer lips), indirect clitoral stimulation is more commonly attributed to penile-vaginal penetration. Penile-anal penetration may also indirectly stimulate the clitoris by the shared sensory nerves (especially the pudendal nerve, which gives off the inferior anal nerves and divides into two terminal branches: the perineal nerve and the dorsal nerve of the clitoris).", "title": "Function" }, { "paragraph_id": 26, "text": "Due to the glans' high sensitivity, direct stimulation to it is not always pleasurable; instead, direct stimulation to the hood or the areas near the glans is often more pleasurable, with the majority of women preferring to use the hood to stimulate the glans, or to have the glans rolled between the lips of the labia, for indirect touch. It is also common for women to enjoy the shaft of the clitoris being softly caressed in concert with the occasional circling of the clitoral glans. This might be with or without manual penetration of the vagina, while other women enjoy having the entire area of the vulva caressed. As opposed to the use of dry fingers, stimulation from well-lubricated fingers, either by vaginal lubrication or a personal lubricant, is usually more pleasurable for the external anatomy of the clitoris.", "title": "Function" }, { "paragraph_id": 27, "text": "As the clitoris' external location does not allow for direct stimulation by sexual penetration, any external clitoral stimulation while in the missionary position usually results from the pubic bone area, the movement of the groins when in contact. As such, some couples may engage in the woman-on-top position or the coital alignment technique, a sex position combining the \"riding high\" variation of the missionary position with pressure-counterpressure movements performed by each partner in rhythm with sexual penetration, to maximize clitoral stimulation. Lesbian couples may engage in tribadism for ample clitoral stimulation or mutual clitoral stimulation during whole-body contact. Pressing the penis in a gliding or circular motion against the clitoris (intercrural sex), or stimulating it by the movement against another body part, may also be practiced. A vibrator (such as a clitoral vibrator), dildo or other sex toy may be used. Other women stimulate the clitoris by use of a pillow or other inanimate object, by a jet of water from the faucet of a bathtub or shower, or by closing their legs and rocking.", "title": "Function" }, { "paragraph_id": 28, "text": "During sexual arousal, the clitoris and the whole of the genitalia engorge and change color as the erectile tissues fill with blood (vasocongestion), and the individual experiences vaginal contractions. The ischiocavernosus and bulbocavernosus muscles, which insert into the corpora cavernosa, contract and compress the dorsal vein of the clitoris (the only vein that drains the blood from the spaces in the corpora cavernosa), and the arterial blood continues a steady flow and having no way to drain out, fills the venous spaces until they become turgid and engorged with blood. This is what leads to clitoral erection.", "title": "Function" }, { "paragraph_id": 29, "text": "The clitoral glans doubles in diameter upon arousal and further stimulation become less visible as it is covered by the swelling of tissues of the clitoral hood. The swelling protects the glans from direct contact, as direct contact at this stage can be more irritating than pleasurable. Vasocongestion eventually triggers a muscular reflex, which expels the blood that was trapped in surrounding tissues, and leads to an orgasm. A short time after stimulation has stopped, especially if orgasm has been achieved, the glans becomes visible again and returns to its normal state, with a few seconds (usually 5–10) to return to its normal position and 5–10 minutes to return to its original size. If orgasm is not achieved, the clitoris may remain engorged for a few hours, which women often find uncomfortable. Additionally, the clitoris is very sensitive after orgasm, making further stimulation initially painful for some women.", "title": "Function" }, { "paragraph_id": 30, "text": "General statistics indicate that 70–80 percent of women require direct clitoral stimulation (consistent manual, oral, or other concentrated friction against the external parts of the clitoris) to reach orgasm. Indirect clitoral stimulation (for example, via vaginal penetration) may also be sufficient for female orgasm. The area near the entrance of the vagina (the lower third) contains nearly 90 percent of the vaginal nerve endings, and there are areas in the anterior vaginal wall and between the top junction of the labia minora and the urethra that are especially sensitive, but intense sexual pleasure, including orgasm, solely from vaginal stimulation is occasional or otherwise absent because the vagina has significantly fewer nerve endings than the clitoris.", "title": "Function" }, { "paragraph_id": 31, "text": "The prominent debate over the quantity of vaginal nerve endings began with Alfred Kinsey. Although Sigmund Freud's theory that clitoral orgasms are a prepubertal or adolescent phenomenon and that vaginal (or G-spot) orgasms are something that only physically mature females experience had been criticized before, Kinsey was the first researcher to harshly criticize the theory. Through his observations of female masturbation and interviews with thousands of women, Kinsey found that most of the women he observed and surveyed could not have vaginal orgasms, a finding that was also supported by his knowledge of sex organ anatomy. Scholar Janice M. Irvine stated that he \"criticized Freud and other theorists for projecting male constructs of sexuality onto women\" and \"viewed the clitoris as the main center of sexual response\". He considered the vagina to be \"relatively unimportant\" for sexual satisfaction, relaying that \"few women inserted fingers or objects into their vaginas when they masturbated\". Believing that vaginal orgasms are \"a physiological impossibility\" because the vagina has insufficient nerve endings for sexual pleasure or climax, he \"concluded that satisfaction from penile penetration [is] mainly psychological or perhaps the result of referred sensation\".", "title": "Function" }, { "paragraph_id": 32, "text": "Masters and Johnson's research, as well as Shere Hite's, generally supported Kinsey's findings about the female orgasm. Masters and Johnson were the first researchers to determine that the clitoral structures surround and extend along and within the labia. They observed that both clitoral and vaginal orgasms have the same stages of physical response, and found that the majority of their subjects could only achieve clitoral orgasms, while a minority achieved vaginal orgasms. On that basis, they argued that clitoral stimulation is the source of both kinds of orgasms, reasoning that the clitoris is stimulated during penetration by friction against its hood. The research came at the time of the second-wave feminist movement, which inspired feminists to reject the distinction made between clitoral and vaginal orgasms. Feminist Anne Koedt argued that because men \"have orgasms essentially by friction with the vagina\" and not the clitoral area, this is why women's biology had not been properly analyzed. \"Today, with extensive knowledge of anatomy, with [C. Lombard Kelly], Kinsey, and Masters and Johnson, to mention just a few sources, there is no ignorance on the subject [of the female orgasm],\" she stated in her 1970 article The Myth of the Vaginal Orgasm. She added, \"There are, however, social reasons why this knowledge has not been popularized. We are living in a male society which has not sought change in women's role.\"", "title": "Function" }, { "paragraph_id": 33, "text": "Supporting an anatomical relationship between the clitoris and vagina is a study published in 2005, which investigated the size of the clitoris; Australian urologist Helen O'Connell, described as having initiated discourse among mainstream medical professionals to refocus on and redefine the clitoris, noted a direct relationship between the legs or roots of the clitoris and the erectile tissue of the clitoral bulbs and corpora, and the distal urethra and vagina while using magnetic resonance imaging (MRI) technology. While some studies, using ultrasound, have found physiological evidence of the G-spot in women who report having orgasms during vaginal intercourse, O'Connell argues that this interconnected relationship is the physiological explanation for the conjectured G-Spot and experience of vaginal orgasms, taking into account the stimulation of the internal parts of the clitoris during vaginal penetration. \"The vaginal wall is, in fact, the clitoris,\" she said. \"If you lift the skin off the vagina on the side walls, you get the bulbs of the clitoris – triangular, crescental masses of erectile tissue.\" O'Connell et al., having performed dissections on the female genitals of cadavers and used photography to map the structure of nerves in the clitoris, made the assertion in 1998 that there is more erectile tissue associated with the clitoris than is generally described in anatomical textbooks and were thus already aware that the clitoris is more than just its glans. They concluded that some females have more extensive clitoral tissues and nerves than others, especially having observed this in young cadavers compared to elderly ones, and therefore whereas the majority of females can only achieve orgasm by direct stimulation of the external parts of the clitoris, the stimulation of the more generalized tissues of the clitoris via vaginal intercourse may be sufficient for others.", "title": "Function" }, { "paragraph_id": 34, "text": "French researchers Odile Buisson Fr and Pierre Foldès reported similar findings to that of O'Connell's. In 2008, they published the first complete 3D sonography of the stimulated clitoris and republished it in 2009 with new research, demonstrating how erectile tissue of the clitoris engorges and surrounds the vagina. Based on their findings, they argued that women may be able to achieve vaginal orgasm via stimulation of the G-spot because the highly innervated clitoris is pulled closely to the anterior wall of the vagina when the woman is sexually aroused and during vaginal penetration. They assert that since the front wall of the vagina is inextricably linked with the internal parts of the clitoris, stimulating the vagina without activating the clitoris may be next to impossible. In their 2009 published study, the \"coronal planes during perineal contraction and finger penetration demonstrated a close relationship between the root of the clitoris and the anterior vaginal wall\". Buisson and Foldès suggested \"that the special sensitivity of the lower anterior vaginal wall could be explained by pressure and movement of clitoris' root during a vaginal penetration and subsequent perineal contraction\".", "title": "Function" }, { "paragraph_id": 35, "text": "Researcher Vincenzo Puppo, who, while agreeing that the clitoris is the center of female sexual pleasure and believing that there is no anatomical evidence of the vaginal orgasm, disagrees with O'Connell and other researchers' terminological and anatomical descriptions of the clitoris (such as referring to the vestibular bulbs as the \"clitoral bulbs\") and states that \"the inner clitoris\" does not exist because the penis cannot come in contact with the congregation of multiple nerves/veins situated until the angle of the clitoris, detailed by Kobelt, or with the roots of the clitoris, which do not have sensory receptors or erogenous sensitivity, during vaginal intercourse. Puppo's belief contrasts the general belief among researchers that vaginal orgasms are the result of clitoral stimulation; they reaffirm that clitoral tissue extends, or is at least stimulated by its bulbs, even in the area most commonly reported to be the G-spot.", "title": "Function" }, { "paragraph_id": 36, "text": "The G-spot is analogous to the base of the male penis and has additionally been theorized, with the sentiment from researcher Amichai Kilchevsky that because female fetal development is the \"default\" state in the absence of substantial exposure to male hormones and therefore the penis is essentially a clitoris enlarged by such hormones, there is no evolutionary reason why females would have an entity in addition to the clitoris that can produce orgasms. The general difficulty of achieving orgasms vaginally, which is a predicament that is likely due to nature easing the process of childbearing by drastically reducing the number of vaginal nerve endings, challenge arguments that vaginal orgasms help encourage sexual intercourse to facilitate reproduction. Supporting a distinct G-spot, however, is a study by Rutgers University, published in 2011, which was the first to map the female genitals onto the sensory portion of the brain; the scans indicated that the brain registered distinct feelings between stimulating the clitoris, the cervix and the vaginal wall – where the G-spot is reported to be – when several women stimulated themselves in a functional magnetic resonance (fMRI) machine. Barry Komisaruk, head of the research findings, stated that he feels that \"the bulk of the evidence shows that the G-spot is not a particular thing\" and that it is \"a region, it's a convergence of many different structures\".", "title": "Function" }, { "paragraph_id": 37, "text": "Whether the clitoris is vestigial, an adaptation, or serves a reproductive function has also been debated. Geoffrey Miller stated that Helen Fisher, Meredith Small and Sarah Blaffer Hrdy \"have viewed the clitoral orgasm as a legitimate adaptation in its own right, with major implications for female sexual behavior and sexual evolution\". Like Lynn Margulis and Natalie Angier, Miller believes, \"The human clitoris shows no apparent signs of having evolved directly through male mate choice. It is not especially large, brightly colored, specifically shaped or selectively displayed during courtship.\" He contrasts this with other female species such as spider monkeys and spotted hyenas that have clitorises as long as their male counterparts. He said the human clitoris \"could have evolved to be much more conspicuous if males had preferred sexual partners with larger brighter clitorises\" and that \"its inconspicuous design combined with its exquisite sensitivity suggests that the clitoris is important not as an object of male mate choice, but as a mechanism of female choice.\"", "title": "Function" }, { "paragraph_id": 38, "text": "While Miller stated that male scientists such as Stephen Jay Gould and Donald Symons \"have viewed the female clitoral orgasm as an evolutionary side-effect of the male capacity for penile orgasm\" and that they \"suggested that clitoral orgasm cannot be an adaptation because it is too hard to achieve\", Gould acknowledged that \"most female orgasms emanate from a clitoral, rather than vaginal (or some other), site\" and that his nonadaptive belief \"has been widely misunderstood as a denial of either the adaptive value of female orgasm in general or even as a claim that female orgasms lack significance in some broader sense\". He said that although he accepts that \"clitoral orgasm plays a pleasurable and central role in female sexuality and its joys,\" \"[a]ll these favorable attributes, however, emerge just as clearly and just as easily, whether the clitoral site of orgasm arose as a spandrel or an adaptation\". He added that the \"male biologists who fretted over [the adaptionist questions] simply assumed that a deeply vaginal site, nearer the region of fertilization, would offer greater selective benefit\" due to their Darwinian, summum bonum beliefs about enhanced reproductive success.", "title": "Function" }, { "paragraph_id": 39, "text": "Similar to Gould's beliefs about adaptionist views and that \"females grow nipples as adaptations for suckling, and males grow smaller unused nipples as a spandrel based upon the value of single development channels\", Elisabeth Lloyd suggested that there is little evidence to support an adaptionist account of female orgasm. Meredith L. Chivers stated that \"Lloyd views female orgasm as an ontogenetic leftover; women have orgasms because the urogenital neurophysiology for orgasm is so strongly selected for in males that this developmental blueprint gets expressed in females without affecting fitness\" and this is similar to \"males hav[ing] nipples that serve no fitness-related function.\"", "title": "Function" }, { "paragraph_id": 40, "text": "At the 2002 conference for Canadian Society of Women in Philosophy, Nancy Tuana argued that the clitoris is unnecessary in reproduction; she stated that it has been ignored because of \"a fear of pleasure. It is pleasure separated from reproduction. That's the fear.\" She reasoned that this fear causes ignorance, which veils female sexuality. O'Connell stated, \"It boils down to rivalry between the sexes: the idea that one sex is sexual and the other reproductive. The truth is that both are sexual and both are reproductive.\" She reiterated that the vestibular bulbs appear to be part of the clitoris and that the distal urethra and vagina are intimately related structures, although they are not erectile in character, forming a tissue cluster with the clitoris that appears to be the location of female sexual function and orgasm.", "title": "Function" }, { "paragraph_id": 41, "text": "Modifications to the clitoris can be intentional or unintentional. They include female genital mutilation (FGM), sex reassignment surgery (for trans men as part transitioning, which may also include clitoris enlargement), intersex surgery, and genital piercings. Use of anabolic steroids by bodybuilders and other athletes can result in significant enlargement of the clitoris in concert with other masculinizing effects on their bodies. Abnormal enlargement of the clitoris may also be referred to as clitoromegaly, but clitoromegaly is more commonly seen as a congenital anomaly of the genitalia.", "title": "Clinical significance" }, { "paragraph_id": 42, "text": "People taking hormones or other medications as part of a transgender transition usually experience dramatic clitoral growth; individual desires and the difficulties of phalloplasty (construction of a penis) often result in the retention of the original genitalia with the enlarged clitoris as a penis analog (metoidioplasty). However, the clitoris cannot reach the size of the penis through hormones. A surgery to add function to the clitoris, such as metoidioplasty, is an alternative to phalloplasty that permits the retention of sexual sensation in the clitoris.", "title": "Clinical significance" }, { "paragraph_id": 43, "text": "In clitoridectomy, the clitoris may be removed as part of a radical vulvectomy to treat cancer such as vulvar intraepithelial neoplasia; however, modern treatments favor more conservative approaches, as invasive surgery can have psychosexual consequences. Clitoridectomy more often involves parts of the clitoris being partially or completely removed during FGM, which may be additionally known as female circumcision or female genital cutting (FGC). Removing the glans of the clitoris does not mean that the whole structure is lost, since the clitoris reaches deep into the genitals.", "title": "Clinical significance" }, { "paragraph_id": 44, "text": "In reduction clitoroplasty, a common intersex surgery, the glans are preserved and parts of the erectile bodies are excised. Problems with this technique include loss of sensation, loss of sexual function, and sloughing of the glans. One way to preserve the clitoris with its innervations and function is to imbricate and bury the clitoral glans; however, Şenaylı et al. state that \"pain during stimulus because of trapped tissue under the scarring is nearly routine. In another method, 50 percent of the ventral clitoris is removed through the level base of the clitoral shaft, and it is reported that good sensation and clitoral function are observed in follow-up\"; additionally, it has \"been reported that the complications are from the same as those in the older procedures for this method\".", "title": "Clinical significance" }, { "paragraph_id": 45, "text": "Concerning females who have the condition congenital adrenal hyperplasia, the largest group requiring surgical genital correction, researcher Atilla Şenaylı stated, \"The main expectations for the operations are to create a normal female anatomy, with minimal complications and improvement of life quality.\" Şenaylı added that \"[c]osmesis, structural integrity, the coital capacity of the vagina, and absence of pain during sexual activity are the parameters to be judged by the surgeon.\" (Cosmesis usually refers to the surgical correction of a disfiguring defect.) He stated that although \"expectations can be standardized within these few parameters, operative techniques have not yet become homogeneous. Investigators have preferred different operations for different ages of patients\".", "title": "Clinical significance" }, { "paragraph_id": 46, "text": "Gender assessment and surgical treatment are the two main steps in intersex operations. \"The first treatments for clitoromegaly were simply resection of the clitoris. Later, it was understood that the clitoris glans and sensory input are important to facilitate orgasm,\" stated Atilla. The clitoral glans' epithelium \"has high cutaneous sensitivity, which is important in sexual responses\", and it is because of this that \"recession clitoroplasty was later devised as an alternative, but reduction clitoroplasty is the method currently performed.\"", "title": "Clinical significance" }, { "paragraph_id": 47, "text": "What is often referred to as \"clit piercing\" is the more common (and significantly less complicated) clitoral hood piercing. Since piercing the clitoris is difficult and very painful, piercing the clitoral hood is more common than piercing the clitoral shaft, owing to the small percentage of people who are anatomically suited for it. Clitoral hood piercings are usually channeled in the form of vertical piercings, and, to a lesser extent, horizontal piercings. The triangle piercing is a very deep horizontal hood piercing and is done behind the clitoris as opposed to in front of it. For styles such as the Isabella piercing, which pass through the clitoral shaft but are placed deep at the base, they provide unique stimulation and still require the proper genital build. The Isabella starts between the clitoral glans and the urethra, exiting at the top of the clitoral hood; this piercing is highly risky concerning the damage that may occur because of intersecting nerves.", "title": "Clinical significance" }, { "paragraph_id": 48, "text": "Persistent genital arousal disorder (PGAD) results in spontaneous, persistent, and uncontrollable genital arousal in women, unrelated to any feelings of sexual desire. Clitoral priapism, also known as clitorism, is a rare, potentially painful medical condition and is sometimes described as an aspect of PGAD. With PGAD, arousal lasts for an unusually extended period (ranging from hours to days); it can also be associated with morphometric and vascular modifications of the clitoris.", "title": "Clinical significance" }, { "paragraph_id": 49, "text": "Drugs may cause or affect clitoral priapism. The drug trazodone is known to cause male priapism as a side effect, but there is only one documented report that it may have caused clitoral priapism, in which case discontinuing the medication may be a remedy. Additionally, nefazodone is documented to have caused clitoral engorgement, as distinct from clitoral priapism, in one case, and clitoral priapism can sometimes start as a result of, or only after, the discontinuation of antipsychotics or selective serotonin reuptake inhibitors (SSRIs).", "title": "Clinical significance" }, { "paragraph_id": 50, "text": "Because PGAD is relatively rare and, as its concept apart from clitoral priapism, has only been researched since 2001, there is little research into what may cure or remedy the disorder. In some recorded cases, PGAD was caused by or caused, a pelvic arterial-venous malformation with arterial branches to the clitoris; surgical treatment was effective in these cases.", "title": "Clinical significance" }, { "paragraph_id": 51, "text": "In 2022, an article in The New York Times reported several instances of women experiencing reduced clitoral sensitivity or inability to orgasm following various surgical procedures, including biopsies of the vulva, pelvic mesh surgeries (sling surgeries), and labiaplasties. The Times quoted several researchers who suggest that surgeons' lack of training in clitoral anatomy and nerve distribution may have been a factor.", "title": "Clinical significance" }, { "paragraph_id": 52, "text": "Concerning historical and modern perceptions of the clitoris, the clitoris, and the penis was considered equivalent by some scholars for more than 2,500 years in all respects except their arrangement. Due to it being frequently omitted from, or misrepresented in, historical and contemporary anatomical texts, it was also subject to a continual cycle of male scholars claiming to have discovered it. The ancient Greeks, ancient Romans, and Greek and Roman generations up to and throughout the Renaissance, were aware that male and female sex organs are anatomically similar, but prominent anatomists such as Galen (129 – c. 200 AD) and Vesalius (1514–1564) regarded the vagina as the structural equivalent of the penis, except for being inverted; Vesalius argued against the existence of the clitoris in normal women, and his anatomical model described how the penis corresponds with the vagina, without a role for the clitoris.", "title": "Society and culture" }, { "paragraph_id": 53, "text": "Ancient Greek and Roman sexuality additionally designated penetration as \"male-defined\" sexuality. The term tribas, or tribade, was used to refer to a woman or intersex individual who actively penetrated another person (male or female) through the use of the clitoris or a dildo. As any sexual act was believed to require that one of the partners be \"phallic\" and that therefore sexual activity between women was impossible without this feature, mythology popularly associated lesbians with either having enlarged clitorises or as incapable of enjoying sexual activity without the substitution of a phallus.", "title": "Society and culture" }, { "paragraph_id": 54, "text": "In 1545, Charles Estienne was the first writer to identify the clitoris in a work based on dissection, but he concluded that it had a urinary function. Following this study, Realdo Colombo (also known as Matteo Renaldo Colombo), a lecturer in surgery at the University of Padua, Italy, published a book called De re anatomica in 1559, in which he describes the \"seat of woman's delight\". In his role as researcher, Colombo concluded, \"Since no one has discerned these projections and their workings, if it is permissible to give names to things discovered by me, it should be called the love or sweetness of Venus.\", about the mythological Venus, goddess of erotic love. Colombo's claim was disputed by his successor at Padua, Gabriele Falloppio (discoverer of the fallopian tube), who claimed that he was the first to discover the clitoris. In 1561, Falloppio stated, \"Modern anatomists have entirely neglected it ... and do not say a word about it ... and if others have spoken of it, know that they have taken it from me or my students.\" This caused an upset in the European medical community, and, having read Colombo's and Falloppio's detailed descriptions of the clitoris, Vesalius stated, \"It is unreasonable to blame others for incompetence on the basis of some sport of nature you have observed in some women and you can hardly ascribe this new and useless part, as if it were an organ, to healthy women.\" He concluded, \"I think that such a structure appears in hermaphrodites who otherwise have well-formed genitals, as Paul of Aegina describes, but I have never once seen in any woman a penis (which Avicenna called albaratha and the Greeks called an enlarged nympha and classed as an illness) or even the rudiments of a tiny phallus.\"", "title": "Society and culture" }, { "paragraph_id": 55, "text": "The average anatomist had difficulty challenging Galen's or Vesalius' research; Galen was the most famous physician of the Greek era and his works were considered the standard of medical understanding up to and throughout the Renaissance (i.e. for almost two thousand years), and various terms being used to describe the clitoris seemed to have further confused the issue of its structure. In addition to Avicenna's naming it the albaratha or virga (\"rod\") and Colombo's calling it the sweetness of Venus, Hippocrates used the term columella (\"little pillar'\"), and Albucasis, an Arabic medical authority, named it tentigo (\"tension\"). The names indicated that each description of the structures was about the body and glans of the clitoris but usually the glans. It was additionally known to the Romans, who named it (vulgar slang) landica. However, Albertus Magnus, one of the most prolific writers of the Middle Ages, felt that it was important to highlight \"homologies between male and female structures and function\" by adding \"a psychology of sexual arousal\" that Aristotle had not used to detail the clitoris. While in Constantine's treatise Liber de coitu, the clitoris is referred to a few times, Magnus gave an equal amount of attention to male and female organs.", "title": "Society and culture" }, { "paragraph_id": 56, "text": "Like Avicenna, Magnus also used the word virga for the clitoris, but employed it for the male and female genitals; despite his efforts to give equal ground to the clitoris, the cycle of suppression and rediscovery of the organ continued, and a 16th-century justification for clitoridectomy appears to have been confused by hermaphroditism and the imprecision created by the word nymphae substituted for the word clitoris. Nymphotomia was a medical operation to excise an unusually large clitoris, but what was considered \"unusually large\" was often a matter of perception. The procedure was routinely performed on Egyptian women, due to physicians such as Jacques Daléchamps who believed that this version of the clitoris was \"an unusual feature that occurred in almost all Egyptian women [and] some of ours, so that when they find themselves in the company of other women, or their clothes rub them while they walk or their husbands wish to approach them, it erects like a male penis and indeed they use it to play with other women, as their husbands would do ... Thus the parts are cut\".", "title": "Society and culture" }, { "paragraph_id": 57, "text": "Caspar Bartholin, a 17th-century Danish anatomist, dismissed Colombo's and Falloppio's claims that they discovered the clitoris, arguing that the clitoris had been widely known to medical science since the second century. Although 17th-century midwives recommended to men and women that women should aspire to achieve orgasms to help them get pregnant for general health and well-being and to keep their relationships healthy, debate about the importance of the clitoris persisted, notably in the work of Regnier de Graaf in the 17th century and Georg Ludwig Kobelt in the 19th.", "title": "Society and culture" }, { "paragraph_id": 58, "text": "Like Falloppio and Bartholin, de Graaf criticized Colombo's claim of having discovered the clitoris; his work appears to have provided the first comprehensive account of clitoral anatomy. \"We are extremely surprised that some anatomists make no more mention of this part than if it did not exist at all in the universe of nature,\" he stated. \"In every cadaver, we have so far dissected we have found it quite perceptible to sight and touch.\" De Graaf stressed the need to distinguish nympha from clitoris, choosing to \"always give [the clitoris] the name clitoris\" to avoid confusion; this resulted in the frequent use of the correct name for the organ among anatomists, but considering that nympha was also varied in its use and eventually became the term specific to the labia minora, more confusion ensued. Debate about whether orgasm was even necessary for women began in the Victorian era, and Freud's 1905 theory about the immaturity of clitoral orgasms (see above) negatively affected women's sexuality throughout most of the 20th century.", "title": "Society and culture" }, { "paragraph_id": 59, "text": "Toward the end of World War I, a maverick British MP named Noel Pemberton Billing published an article entitled \"The Cult of the Clitoris\", furthering his conspiracy theories and attacking the actress Maud Allan and Margot Asquith, wife of the prime minister. The accusations led to a sensational libel trial, which Billing eventually won; Philip Hoare reports that Billing argued that \"as a medical term, 'clitoris' would only be known to the 'initiated', and was incapable of corrupting moral minds\". Jodie Medd argues regarding \"The Cult of the Clitoris\" that \"the female non-reproductive but desiring body [...] simultaneously demands and refuses interpretative attention, inciting scandal through its very resistance to representation.\"", "title": "Society and culture" }, { "paragraph_id": 60, "text": "From the 18th to the 20th century, especially during the 20th, details of the clitoris from various genital diagrams presented in earlier centuries were omitted from later texts. The full extent of the clitoris was alluded to by Masters and Johnson in 1966, but in such a muddled fashion that the significance of their description became obscured; in 1981, the Federation of Feminist Women's Health Clinics (FFWHC) continued this process with anatomically precise illustrations identifying 18 structures of the clitoris. Despite the FFWHC's illustrations, Josephine Lowndes Sevely, in 1987, described the vagina as more of the counterpart of the penis.", "title": "Society and culture" }, { "paragraph_id": 61, "text": "Concerning other beliefs about the clitoris, Hite (1976 and 1981) found that, during sexual intimacy with a partner, clitoral stimulation was more often described by women as foreplay than as a primary method of sexual activity, including orgasm. Further, although the FFWHC's work significantly propelled feminist reformation of anatomical texts, it did not have a general impact. Helen O'Connell's late 1990s research motivated the medical community to start changing the way the clitoris is anatomically defined. O'Connell describes typical textbook descriptions of the clitoris as lacking detail and including inaccuracies, such as older and modern anatomical descriptions of the female human urethral and genital anatomy having been based on dissections performed on elderly cadavers whose erectile (clitoral) tissue had shrunk. She instead credits the work of Georg Ludwig Kobelt as the most comprehensive and accurate description of clitoral anatomy. MRI measurements, which provide a live and multi-planar method of examination, now complement the FFWHC's, as well as O'Connell's, research efforts concerning the clitoris, showing that the volume of clitoral erectile tissue is ten times that which is shown in doctors' offices and anatomy textbooks.", "title": "Society and culture" }, { "paragraph_id": 62, "text": "In Bruce Bagemihl's survey of The Zoological Record (1978–1997) – which contains over a million documents from over 6,000 scientific journals – 539 articles focusing on the penis were found, while seven were found focusing on the clitoris. In 2000, researchers Shirley Ogletree and Harvey Ginsberg concluded that there is a general neglect of the word clitoris in the common vernacular. They looked at the terms used to describe genitalia in the PsycINFO database from 1887 to 2000 and found that penis was used in 1,482 sources, vagina in 409, while clitoris was only mentioned in 83. They additionally analyzed 57 books listed in a computer database for sex instruction. In the majority of the books, penis was the most commonly discussed body part – mentioned more than clitoris, vagina, and uterus put together. They last investigated terminology used by college students, ranging from Euro-American (76%/76%), Hispanic (18%/14%), and African American (4%/7%), regarding the students' beliefs about sexuality and knowledge on the subject. The students were overwhelmingly educated to believe that the vagina is the female counterpart of the penis. The authors found that the student's belief that the inner portion of the vagina is the most sexually sensitive part of the female body correlated with negative attitudes toward masturbation and strong support for sexual myths.", "title": "Society and culture" }, { "paragraph_id": 63, "text": "A study in 2005 reported that, among a sample of undergraduate students, the most frequently cited sources for knowledge about the clitoris were school and friends, and that this was associated with the least tested knowledge. Knowledge of the clitoris by self-exploration was the least cited, but \"respondents correctly answered, on average, three of the five clitoral knowledge measures\". The authors stated that \"[k]nowledge correlated significantly with the frequency of women's orgasm in masturbation but not partnered sex\" and that their \"results are discussed in light of gender inequality and a social construction of sexuality, endorsed by both men and women, that privileges men's sexual pleasure over women's, such that orgasm for women is pleasing but ultimately incidental.\" They concluded that part of the solution to remedying \"this problem\" requires that males and females are taught more about the clitoris than is currently practiced.", "title": "Society and culture" }, { "paragraph_id": 64, "text": "The humanitarian group Clitoraid launched the first annual International Clitoris Awareness Week, from 6 to 12 May in 2015. Clitoraid spokesperson Nadine Gary stated that the group's mission is to raise public awareness about the clitoris because it has \"been ignored, vilified, made taboo, and considered sinful and shameful for centuries\".", "title": "Society and culture" }, { "paragraph_id": 65, "text": "Odile Fillod created a 3D printable, open source, full-size model of the clitoris, for use in a set of anti-sexist videos she had been commissioned to produce. Fillod was interviewed by Stephanie Theobald, whose article in The Guardian stated that the 3D model would be used for sex education in French schools, from primary to secondary level, from September 2016 onwards; this was not the case, but the story went viral across the world.", "title": "Society and culture" }, { "paragraph_id": 66, "text": "A questionnaire in a 2019 study was administered to a sample of educational sciences postgraduate students to trace the level of their knowledge concerning the organs of the female and male reproductive system. The authors reported that about two-thirds of the students failed to name external female genitals, such as the clitoris and labia, even after detailed pictures were provided to them. An analysis in 2022 reported that the clitoris is mentioned in only one out of 113 Greek secondary education textbooks used in biology classes from the 1870s to present.", "title": "Society and culture" }, { "paragraph_id": 67, "text": "New York artist Sophia Wallace started work in 2012 on a multimedia project to challenge misconceptions about the clitoris. Based on O'Connell's 1998 research, Wallace's work emphasizes the sheer scope and size of the human clitoris. She says that ignorance of this still seems to be pervasive in modern society. \"It is a curious dilemma to observe the paradox that on the one hand, the female body is the primary metaphor for sexuality, its use saturates advertising, art, and the mainstream erotic imaginary,\" she said. \"Yet, the clitoris, the true female sexual organ, is virtually invisible.\" The project is called Cliteracy and it includes a \"clit rodeo\", which is interactive, climb-on model of a giant golden clitoris, including its inner parts, produced with the help of sculptor Kenneth Thomas. \"It's been a showstopper wherever it's been shown. People are hungry to be able to talk about this,\" Wallace said. \"I love seeing men standing up for the clit [...] Cliteracy is about not having one's body controlled or legislated [...] Not having access to the pleasure that is your birthright is a deeply political act.\"", "title": "Society and culture" }, { "paragraph_id": 68, "text": "Another project started in New York, in 2016, street art that has since spread to almost 100 cities: Clitorosity, a \"community-driven effort to celebrate the full structure of the clitoris\", combining chalk drawings and words to spark interaction and conversation with passers-by, which the team documents on social media. In 2016, Lori-Malépart Traversy made an animated documentary about the unrecognized anatomy of the clitoris.", "title": "Society and culture" }, { "paragraph_id": 69, "text": "Alli Sebastian Wolf created a golden 100∶1 scale model anatomical of a clitoris in 2017, called the Glitoris and said, she hopes knowledge of the clitoris will soon become so uncontroversial that making art about them would be as irrelevant as making art about penises.", "title": "Society and culture" }, { "paragraph_id": 70, "text": "Other projects listed by the BBC include Clito Clito, body-positive jewellery made in Berlin; Clitorissima, a documentary intended to normalize mother-daughter conversations about the clitoris; and a ClitArt festival in London, encompassing spoken word performances as well as visual art. French art collective Les Infemmes (a pun on \"infamous\" and \"women\") published a fanzine whose title can be translated as \"The Clit Cheatsheet\".", "title": "Society and culture" }, { "paragraph_id": 71, "text": "Significant controversy surrounds female genital mutilation (FGM), with the World Health Organization (WHO) being one of many health organizations that have campaigned against the procedures on behalf of human rights, stating that \"FGM has no health benefits\" and that it is \"a violation of the human rights of girls and women\" which \"reflects deep-rooted inequality between the sexes\". The practice has existed at one point or another in almost all human civilizations, most commonly to exert control over the sexual behavior, including masturbation, of girls and women, but also to change the clitoris' appearance. Custom and tradition are the most frequently cited reasons for FGM, with some cultures believing that not performing it has the possibility of disrupting the cohesiveness of their social and political systems, such as FGM also being a part of a girl's initiation into adulthood. Often, a girl is not considered an adult in an FGM-practicing society unless she has undergone FGM, and the \"removal of the clitoris and labia – viewed by some as the male parts of a woman's body – is thought to enhance the girl's femininity, often synonymous with docility and obedience\".", "title": "Society and culture" }, { "paragraph_id": 72, "text": "Female genital mutilation is carried out in several societies, especially in Africa, with 85 percent of genital mutilations performed in Africa consisting of clitoridectomy or excision, and to a lesser extent in other parts of the Middle East and Southeast Asia, on girls from a few days old to mid-adolescent, often to reduce the sexual desire to preserve vaginal virginity. The practice of FGM has spread globally, as immigrants from Asia, Africa, and the Middle East bring the custom with them. In the United States, it is sometimes practiced on girls born with a clitoris that is larger than usual. Comfort Momoh, who specializes in the topic of FGM, states that FGM might have been \"practiced in ancient Egypt as a sign of distinction among the aristocracy\"; there are reports that traces of infibulation are on Egyptian mummies. FGM is still routinely practiced in Egypt. Greenberg et al. report that \"one study found that 97 percent of married women in Egypt had had some form of genital mutilation performed.\" Amnesty International estimated in 1997 that more than two million FGM procedures are performed every year.", "title": "Society and culture" }, { "paragraph_id": 73, "text": "Although the clitoris exists in all mammal species, few detailed studies of the anatomy of the clitoris in non-humans exist. Studies have been done on the clitoris of cats, sheep and mice. The clitoris is especially developed in fossas, apes, lemurs, moles, and, like the penis in many non-human placental mammals, often contains a small bone. In females, this bone is known as the os clitoridis. Many species of Talpid moles exhibit peniform clitorises that are tunneled by the urethra and are found to have erectile tissue. Studies of Spanish moles have revealed that the female gonads develop in a \"testis-like pattern\". The clitoris exists in turtles, ostriches, crocodiles, and in species of birds in which the male counterpart has a penis. Some intersex female bears mate and give birth through the tip of the clitoris; these species are grizzly bears, brown bears, American black bears and polar bears. Although the bears have been described as having \"a birth canal that runs through the clitoris rather than forming a separate vagina\" (a feature that is estimated to make up 10 to 20 percent of the bears' population), scientists state that female spotted hyenas are the only non-hermaphroditic female mammals devoid of an external vaginal opening, and whose sexual anatomy is distinct from usual intersex cases.", "title": "Other animals" }, { "paragraph_id": 74, "text": "In spider monkeys, the clitoris is especially developed and has an interior passage, or urethra, that makes it almost identical to the penis, and it retains and distributes urine droplets as the female spider monkey moves around. Scholar Alan F. Dixson stated that this urine \"is voided at the bases of the clitoris, flows down the shallow groove on its perineal surface, and is held by the skin folds on each side of the groove\". Because spider monkeys of South America have pendulous and erectile clitorises long enough to be mistaken for a penis, researchers and observers of the species look for a scrotum to determine the animal's sex; a similar approach is to identify scent-marking glands that may also be present on the clitoris.", "title": "Other animals" }, { "paragraph_id": 75, "text": "The clitoris erects in squirrel monkeys during dominance displays, which indirectly influences the squirrel monkeys' reproductive success.", "title": "Other animals" }, { "paragraph_id": 76, "text": "The clitoris of bonobos is larger and more externalized than in most mammals; Natalie Angier said that a young adolescent \"female bonobo is maybe half the weight of a human teenager, but her clitoris is three times bigger than the human equivalent, and visible enough to waggle unmistakably as she walks\". Female bonobos often engage in the practice of genital-genital (GG) rubbing, which is the non-human form of tribadism that human females engage in. Ethologist Jonathan Balcombe stated that female bonobos rub their clitorises together rapidly for ten to twenty seconds, and this behavior, \"which may be repeated in rapid succession, is usually accompanied by grinding, shrieking, and clitoral engorgement\"; he added that, on average, they engage in this practice \"about once every two hours\", and as bonobos sometimes mate face-to-face, \"evolutionary biologist Marlene Zuk has suggested that the position of the clitoris in bonobos and some other primates has evolved to maximize stimulation during sexual intercourse\".", "title": "Other animals" }, { "paragraph_id": 77, "text": "Many strepsirrhine species exhibit elongated clitorises that are either fully or partially tunneled by the urethra, including mouse lemurs, dwarf lemurs, all Eulemur species, lorises and galagos. Some of these species also exhibit a membrane seal across the vagina that closes the vaginal opening during the non-mating seasons, most notably mouse and dwarf lemurs. The clitoral morphology of the ring-tailed lemur is the most well-studied. They are described as having \"elongated, pendulous clitorises that are [fully] tunneled by a urethra\". The urethra is surrounded by erectile tissue, which allows for significant swelling during breeding seasons, but this erectile tissue differs from the typical male corpus spongiosum. Non-pregnant adult ring-tailed females do not show higher testosterone levels than males, but they do exhibit higher A4 and estrogen levels during seasonal aggression. During pregnancy, estrogen, A4, and testosterone levels are raised, but female fetuses are still \"protected\" from excess testosterone. These \"masculinized\" genitalia are often found alongside other traits, such as female-dominated social groups, reduced sexual dimorphism that makes females the same size as males, and even ratios of sexes in adult populations. This phenomenon that has been dubbed the \"lemur syndrome\". A 2014 study of Eulemur masculinization proposed that behavioral and morphological masculinization in female lemuriformes is an ancestral trait that likely emerged after their split from lorisiformes.", "title": "Other animals" }, { "paragraph_id": 78, "text": "", "title": "Other animals" }, { "paragraph_id": 79, "text": "While female spotted hyenas are sometimes referred to as hermaphrodites or as intersex, and scientists of ancient and later historical times believed that they were hermaphrodites, modern scientists do not refer to them as such. That designation is typically reserved for those who simultaneously exhibit features of both sexes; the genetic makeup of female spotted hyenas \"are clearly distinct\" from male spotted hyenas.", "title": "Other animals" }, { "paragraph_id": 80, "text": "Female spotted hyenas have a clitoris 90 percent as long and the same diameter as a male penis (171 millimeters long and 22 millimeters in diameter), and this pseudo-penis' formation seems largely androgen-independent because it appears in the female fetus before differentiation of the fetal ovary and adrenal gland. The spotted hyenas have a highly erectile clitoris, complete with a false scrotum; author John C. Wingfield stated that \"the resemblance to male genitalia is so close that sex can be determined with confidence only by palpation of the scrotum\". The pseudo-penis can also be distinguished from the males' genitalia by its greater thickness and more rounded glans. The female possesses no external vagina, as the labia are fused to form a pseudo-scrotum. In the females, this scrotum consists of soft adipose tissue. Like male spotted hyenas with regard to their penises, the female spotted hyenas have small penile spines on the head of their clitorises, which scholar Catherine Blackledge [pl] said makes \"the clitoris tip feel like soft sandpaper\". She added that the clitoris \"extends away from the body in a sleek and slender arc, measuring, on average, over 17 cm from root to tip. Just like a penis, [it] is fully erectile, raising its head in hyena greeting ceremonies, social displays, games of rough and tumble or when sniffing out peers\".", "title": "Other animals" }, { "paragraph_id": 81, "text": "Due to their higher levels of androgen exposure during fetal development, the female hyenas are significantly more muscular and aggressive than their male counterparts; social-wise, they are of higher rank than the males, being dominant or dominant and alpha, and the females who have been exposed to higher levels of androgen than average become higher-ranking than their female peers. Subordinate females lick the clitorises of higher-ranked females as a sign of submission and obedience, but females also lick each other's clitorises as a greeting or to strengthen social bonds; in contrast, while all males lick the clitorises of dominant females, the females will not lick the penises of males because males are considered to be of lowest rank.", "title": "Other animals" }, { "paragraph_id": 82, "text": "The urethra and vagina of the female spotted hyena exit through the clitoris, allowing the females to urinate, copulate and give birth through this organ. This trait makes mating more laborious for the male than in other mammals, and also makes attempts to sexually coerce (physically force sexual activity on) females futile. Joan Roughgarden, an ecologist and evolutionary biologist, said that because the hyena's clitoris is higher on the belly than the vagina in most mammals, the male hyena \"must slide his rear under the female when mating so that his penis lines up with [her clitoris]\". In an action similar to pushing up a shirtsleeve, the \"female retracts the [pseudo-penis] on itself, and creates an opening into which the male inserts his own penis\". The male must practice this act, which can take a couple of months to successfully perform. Female spotted hyenas exposed to larger doses of androgen have significantly damaged ovaries, making it difficult to conceive. After giving birth, the pseudo-penis is stretched and loses much of its original aspects; it becomes a slack-walled and reduced prepuce with an enlarged orifice with split lips. Approximately 15% of the females die during their first time giving birth, and over 60% of their species' firstborn young die.", "title": "Other animals" }, { "paragraph_id": 83, "text": "A 2006 Baskin et al. study concluded, \"The basic anatomical structures of the corporeal bodies in both sexes of humans and spotted hyenas were similar. As in humans, the dorsal nerve distribution was unique in being devoid of nerves at the 12 o'clock position in the penis and clitoris of the spotted hyena\" and that \"[d]orsal nerves of the penis/clitoris in humans and male spotted hyenas tracked along both sides of the corporeal body to the corpus spongiosum at the 5 and 7 o'clock positions. The dorsal nerves penetrated the corporeal body and distally the glans in the hyena\", and in female hyenas, \"the dorsal nerves fanned out laterally on the clitoral body. Glans morphology was different in appearance in both sexes, being wide and blunt in the female and tapered in the male\".", "title": "Other animals" }, { "paragraph_id": 84, "text": "", "title": "External links" } ]	The clitoris is a female sex organ present in mammals, ostriches, and a limited number of other animals. In humans, the visible portion – the glans – is at the front junction of the labia minora, above the opening of the urethra. Unlike the penis, the male homologue (equivalent) to the clitoris, it usually does not contain the distal portion of the urethra and is therefore not used for urination. In most species, the clitoris lacks any reproductive function. While few animals urinate through the clitoris or use it reproductively, the spotted hyena, which has an especially large clitoris, urinates, mates, and gives birth via the organ. Some other mammals, such as lemurs and spider monkeys, also have a large clitoris. The clitoris is the human female's most sensitive erogenous zone and generally the primary anatomical source of human female sexual pleasure. The clitoris is a complex structure, and its size and sensitivity can vary. The glans (head) of the human clitoris is roughly the size and shape of a pea and is estimated to have 8,000 and possibly more than 10,000 sensory nerve endings. Sexological, medical, and psychological debate has focused on the clitoris, and it has been subject to social constructionist analyses and studies. Such discussions range from anatomical accuracy, gender inequality, female genital mutilation, and orgasmic factors and their physiological explanation for the G-spot. Although, in humans, the only known purpose of the clitoris is to provide sexual pleasure, whether the clitoris is vestigial, an adaptation, or serves a reproductive function has been debated. Social perceptions of the clitoris include the significance of its role in female sexual pleasure, assumptions about its true size and depth, and varying beliefs regarding genital modification such as clitoris enlargement, clitoris piercing and clitoridectomy. Genital modification may be for aesthetic, medical or cultural reasons. Knowledge of the clitoris is significantly affected by cultural perceptions of the organ. Studies suggest that knowledge of its existence and anatomy is scant in comparison with that of other sexual organs and that more education about it could help alleviate social stigmas associated with the female body and female sexual pleasure. Examples of stigma include the ideas that the clitoris and vulva in general are visually unappealing, that female masturbation is taboo, or that men should be expected to master and control women's orgasms.	2001-10-25T18:32:53Z	2023-12-22T17:08:15Z	[ "Template:Pp-semi-indef", "Template:Transl", "Template:Refbegin", "Template:Em", "Template:Main", "Template:Reflist", "Template:Plural form", "Template:Refn", "Template:ISBN", "Template:Snds", "Template:Nbsp", "Template:Ratio", "Template:Webarchive", "Template:Cite journal", "Template:Redirect", "Template:Pp-move", "Template:IPAc-en", "Template:Women's health", "Template:Sex", "Template:Further", "Template:Good article", "Template:See also", "Template:Ill", "Template:Cite web", "Template:Cite news", "Template:Refend", "Template:Short description", "Template:Use dmy dates", "Template:Convert", "Template:Commons category-inline", "Template:Authority control", "Template:Citation", "Template:Female reproductive system", "Template:Lang", "Template:Ndash", "Template:Circa", "Template:Cite book", "Template:Wiktionary-inline", "Template:Infobox anatomy", "Template:TOC limit", "Template:Anchor" ]	https://en.wikipedia.org/wiki/Clitoris
6,886	Chicago	Chicago (/ʃɪˈkɑːɡoʊ/ shih-KAH-goh, locally also /ʃɪˈkɔːɡoʊ/ shih-KAW-goh; Miami-Illinois: Shikaakwa; Ojibwe: Zhigaagong) is the most populous city in the U.S. state of Illinois and the third-most populous in the United States after New York City and Los Angeles. With a population of 2,746,388 in the 2020 census, it is also the most populous city in the Midwest. As the seat of Cook County, the second-most populous county in the U.S., Chicago is the center of the Chicago metropolitan area. Located on the shore of Lake Michigan, Chicago was incorporated as a city in 1837 near a portage between the Great Lakes and the Mississippi River watershed. It grew rapidly in the mid-19th century. In 1871, the Great Chicago Fire destroyed several square miles and left more than 100,000 homeless, but Chicago's population continued to grow. Chicago made noted contributions to urban planning and architecture, such as the Chicago School, the development of the City Beautiful Movement, and the steel-framed skyscraper. Chicago is an international hub for finance, culture, commerce, industry, education, technology, telecommunications, and transportation. It has the largest and most diverse derivatives market in the world, generating 20% of all volume in commodities and financial futures alone. O'Hare International Airport is routinely ranked among the world's top six busiest airports by passenger traffic, and the region is also the nation's railroad hub. The Chicago area has one of the highest gross domestic products (GDP) in the world, generating $689 billion in 2018. Chicago's economy is diverse, with no single industry employing more than 14% of the workforce. Chicago is a major tourist destination. Chicago's culture has contributed much to the visual arts, literature, film, theater, comedy (especially improvisational comedy), food, dance, and music (particularly jazz, blues, soul, hip-hop, gospel, and electronic dance music, including house music). Chicago is home to the Chicago Symphony Orchestra and the Lyric Opera of Chicago, while the Art Institute of Chicago provides an influential visual arts museum and art school. The Chicago area also hosts the University of Chicago, Northwestern University, and the University of Illinois Chicago, among other institutions of learning. Chicago has professional sports teams in each of the major professional leagues, including two Major League Baseball teams. The name Chicago is derived from a French rendering of the indigenous Miami-Illinois word shikaakwa for a wild relative of the onion; it is known to botanists as Allium tricoccum and known more commonly as "ramps". The first known reference to the site of the current city of Chicago as "Checagou" was by Robert de LaSalle around 1679 in a memoir. Henri Joutel, in his journal of 1688, noted that the eponymous wild "garlic" grew profusely in the area. According to his diary of late September 1687: ... when we arrived at the said place called "Chicagou" which, according to what we were able to learn of it, has taken this name because of the quantity of garlic which grows in the forests in this region. The city has had several nicknames throughout its history, such as the Windy City, Chi-Town, Second City, and City of the Big Shoulders. In the mid-18th century, the area was inhabited by the Potawatomi, an indigenous tribe who had succeeded the Miami and Sauk and Fox peoples in this region. The first known permanent settler in Chicago was trader Jean Baptiste Point du Sable. Du Sable was of African descent, perhaps born in the French colony of Saint-Domingue (Haiti), and established the settlement in the 1780s. He is commonly known as the "Founder of Chicago". In 1795, following the victory of the new United States in the Northwest Indian War, an area that was to be part of Chicago was turned over to the U.S. for a military post by native tribes in accordance with the Treaty of Greenville. In 1803, the U.S. Army constructed Fort Dearborn, which was destroyed during the War of 1812 in the Battle of Fort Dearborn by the Potawatomi before being later rebuilt. After the War of 1812, the Ottawa, Ojibwe, and Potawatomi tribes ceded additional land to the United States in the 1816 Treaty of St. Louis. The Potawatomi were forcibly removed from their land after the 1833 Treaty of Chicago and sent west of the Mississippi River as part of the federal policy of Indian removal. On August 12, 1833, the Town of Chicago was organized with a population of about 200. Within seven years it grew to more than 6,000 people. On June 15, 1835, the first public land sales began with Edmund Dick Taylor as Receiver of Public Monies. The City of Chicago was incorporated on Saturday, March 4, 1837, and for several decades was the world's fastest-growing city. As the site of the Chicago Portage, the city became an important transportation hub between the eastern and western United States. Chicago's first railway, Galena and Chicago Union Railroad, and the Illinois and Michigan Canal opened in 1848. The canal allowed steamboats and sailing ships on the Great Lakes to connect to the Mississippi River. A flourishing economy brought residents from rural communities and immigrants from abroad. Manufacturing and retail and finance sectors became dominant, influencing the American economy. The Chicago Board of Trade (established 1848) listed the first-ever standardized "exchange-traded" forward contracts, which were called futures contracts. In the 1850s, Chicago gained national political prominence as the home of Senator Stephen Douglas, the champion of the Kansas–Nebraska Act and the "popular sovereignty" approach to the issue of the spread of slavery. These issues also helped propel another Illinoisan, Abraham Lincoln, to the national stage. Lincoln was nominated in Chicago for U.S. president at the 1860 Republican National Convention, which was held in a purpose-built auditorium called the Wigwam. He defeated Douglas in the general election, and this set the stage for the American Civil War. To accommodate rapid population growth and demand for better sanitation, the city improved its infrastructure. In February 1856, Chicago's Common Council approved Chesbrough's plan to build the United States' first comprehensive sewerage system. The project raised much of central Chicago to a new grade with the use of jackscrews for raising buildings. While elevating Chicago, and at first improving the city's health, the untreated sewage and industrial waste now flowed into the Chicago River, and subsequently into Lake Michigan, polluting the city's primary freshwater source. The city responded by tunneling two miles (3.2 km) out into Lake Michigan to newly built water cribs. In 1900, the problem of sewage contamination was largely resolved when the city completed a major engineering feat. It reversed the flow of the Chicago River so that the water flowed away from Lake Michigan rather than into it. This project began with the construction and improvement of the Illinois and Michigan Canal, and was completed with the Chicago Sanitary and Ship Canal that connects to the Illinois River, which flows into the Mississippi River. In 1871, the Great Chicago Fire destroyed an area about 4 miles (6.4 km) long and 1-mile (1.6 km) wide, a large section of the city at the time. Much of the city, including railroads and stockyards, survived intact, and from the ruins of the previous wooden structures arose more modern constructions of steel and stone. These set a precedent for worldwide construction. During its rebuilding period, Chicago constructed the world's first skyscraper in 1885, using steel-skeleton construction. The city grew significantly in size and population by incorporating many neighboring townships between 1851 and 1920, with the largest annexation happening in 1889, with five townships joining the city, including the Hyde Park Township, which now comprises most of the South Side of Chicago and the far southeast of Chicago, and the Jefferson Township, which now makes up most of Chicago's Northwest Side. The desire to join the city was driven by municipal services that the city could provide its residents. Chicago's flourishing economy attracted huge numbers of new immigrants from Europe and migrants from the Eastern United States. Of the total population in 1900, more than 77% were either foreign-born or born in the United States of foreign parentage. Germans, Irish, Poles, Swedes, and Czechs made up nearly two-thirds of the foreign-born population (by 1900, whites were 98.1% of the city's population). Labor conflicts followed the industrial boom and the rapid expansion of the labor pool, including the Haymarket affair on May 4, 1886, and in 1894 the Pullman Strike. Anarchist and socialist groups played prominent roles in creating very large and highly organized labor actions. Concern for social problems among Chicago's immigrant poor led Jane Addams and Ellen Gates Starr to found Hull House in 1889. Programs that were developed there became a model for the new field of social work. During the 1870s and 1880s, Chicago attained national stature as the leader in the movement to improve public health. City laws and later, state laws that upgraded standards for the medical profession and fought urban epidemics of cholera, smallpox, and yellow fever were both passed and enforced. These laws became templates for public health reform in other cities and states. The city established many large, well-landscaped municipal parks, which also included public sanitation facilities. The chief advocate for improving public health in Chicago was John H. Rauch, M.D. Rauch established a plan for Chicago's park system in 1866. He created Lincoln Park by closing a cemetery filled with shallow graves, and in 1867, in response to an outbreak of cholera he helped establish a new Chicago Board of Health. Ten years later, he became the secretary and then the president of the first Illinois State Board of Health, which carried out most of its activities in Chicago. In the 1800s, Chicago became the nation's railroad hub, and by 1910 over 20 railroads operated passenger service out of six different downtown terminals. In 1883, Chicago's railway managers needed a general time convention, so they developed the standardized system of North American time zones. This system for telling time spread throughout the continent. In 1893, Chicago hosted the World's Columbian Exposition on former marshland at the present location of Jackson Park. The Exposition drew 27.5 million visitors, and is considered the most influential world's fair in history. The University of Chicago, formerly at another location, moved to the same South Side location in 1892. The term "midway" for a fair or carnival referred originally to the Midway Plaisance, a strip of park land that still runs through the University of Chicago campus and connects the Washington and Jackson Parks. During World War I and the 1920s there was a major expansion in industry. The availability of jobs attracted African Americans from the Southern United States. Between 1910 and 1930, the African American population of Chicago increased dramatically, from 44,103 to 233,903. This Great Migration had an immense cultural impact, called the Chicago Black Renaissance, part of the New Negro Movement, in art, literature, and music. Continuing racial tensions and violence, such as the Chicago race riot of 1919, also occurred. The ratification of the 18th amendment to the Constitution in 1919 made the production and sale (including exportation) of alcoholic beverages illegal in the United States. This ushered in the beginning of what is known as the gangster era, a time that roughly spans from 1919 until 1933 when Prohibition was repealed. The 1920s saw gangsters, including Al Capone, Dion O'Banion, Bugs Moran and Tony Accardo battle law enforcement and each other on the streets of Chicago during the Prohibition era. Chicago was the location of the infamous St. Valentine's Day Massacre in 1929, when Al Capone sent men to gun down members of a rival gang, North Side, led by Bugs Moran. Chicago was the first American city to have a homosexual-rights organization. The organization, formed in 1924, was called the Society for Human Rights. It produced the first American publication for homosexuals, Friendship and Freedom. Police and political pressure caused the organization to disband. The Great Depression brought unprecedented suffering to Chicago, in no small part due to the city's heavy reliance on heavy industry. Notably, industrial areas on the south side and neighborhoods lining both branches of the Chicago River were devastated; by 1933 over 50% of industrial jobs in the city had been lost, and unemployment rates amongst blacks and Mexicans in the city were over 40%. The Republican political machine in Chicago was utterly destroyed by the economic crisis, and every mayor since 1931 has been a Democrat. From 1928 to 1933, the city witnessed a tax revolt, and the city was unable to meet payroll or provide relief efforts. The fiscal crisis was resolved by 1933, and at the same time, federal relief funding began to flow into Chicago. Chicago was also a hotbed of labor activism, with Unemployed Councils contributing heavily in the early depression to create solidarity for the poor and demand relief, these organizations were created by socialist and communist groups. By 1935 the Workers Alliance of America begun organizing the poor, workers, the unemployed. In the spring of 1937 Republic Steel Works witnessed the Memorial Day massacre of 1937 in the neighborhood of East Side. In 1933, Chicago Mayor Anton Cermak was fatally wounded in Miami, Florida, during a failed assassination attempt on President-elect Franklin D. Roosevelt. In 1933 and 1934, the city celebrated its centennial by hosting the Century of Progress International Exposition World's Fair. The theme of the fair was technological innovation over the century since Chicago's founding. During World War II, the city of Chicago alone produced more steel than the United Kingdom every year from 1939 – 1945, and more than Nazi Germany from 1943 – 1945. The Great Migration, which had been on pause due to the Depression, resumed at an even faster pace in the second wave, as hundreds of thousands of blacks from the South arrived in the city to work in the steel mills, railroads, and shipping yards. On December 2, 1942, physicist Enrico Fermi conducted the world's first controlled nuclear reaction at the University of Chicago as part of the top-secret Manhattan Project. This led to the creation of the atomic bomb by the United States, which it used in World War II in 1945. Mayor Richard J. Daley, a Democrat, was elected in 1955, in the era of machine politics. In 1956, the city conducted its last major expansion when it annexed the land under O'Hare airport, including a small portion of DuPage County. By the 1960s, white residents in several neighborhoods left the city for the suburban areas – in many American cities, a process known as white flight – as Blacks continued to move beyond the Black Belt. While home loan discriminatory redlining against blacks continued, the real estate industry practiced what became known as blockbusting, completely changing the racial composition of whole neighborhoods. Structural changes in industry, such as globalization and job outsourcing, caused heavy job losses for lower-skilled workers. At its peak during the 1960s, some 250,000 workers were employed in the steel industry in Chicago, but the steel crisis of the 1970s and 1980s reduced this number to just 28,000 in 2015. In 1966, Martin Luther King Jr. and Albert Raby led the Chicago Freedom Movement, which culminated in agreements between Mayor Richard J. Daley and the movement leaders. Two years later, the city hosted the tumultuous 1968 Democratic National Convention, which featured physical confrontations both inside and outside the convention hall, with anti-war protesters, journalists and bystanders being beaten by police. Major construction projects, including the Sears Tower (now known as the Willis Tower, which in 1974 became the world's tallest building), University of Illinois at Chicago, McCormick Place, and O'Hare International Airport, were undertaken during Richard J. Daley's tenure. In 1979, Jane Byrne, the city's first female mayor, was elected. She was notable for temporarily moving into the crime-ridden Cabrini-Green housing project and for leading Chicago's school system out of a financial crisis. In 1983, Harold Washington became the first black mayor of Chicago. Washington's first term in office directed attention to poor and previously neglected minority neighborhoods. He was re‑elected in 1987 but died of a heart attack soon after. Washington was succeeded by 6th ward alderperson Eugene Sawyer, who was elected by the Chicago City Council and served until a special election. Richard M. Daley, son of Richard J. Daley, was elected in 1989. His accomplishments included improvements to parks and creating incentives for sustainable development, as well as closing Meigs Field in the middle of the night and destroying the runways. After successfully running for re-election five times, and becoming Chicago's longest-serving mayor, Richard M. Daley declined to run for a seventh term. In 1992, a construction accident near the Kinzie Street Bridge produced a breach connecting the Chicago River to a tunnel below, which was part of an abandoned freight tunnel system extending throughout the downtown Loop district. The tunnels filled with 250 million US gallons (1,000,000 m) of water, affecting buildings throughout the district and forcing a shutdown of electrical power. The area was shut down for three days and some buildings did not reopen for weeks; losses were estimated at $1.95 billion. On February 23, 2011, Rahm Emanuel, a former White House Chief of Staff and member of the House of Representatives, won the mayoral election. Emanuel was sworn in as mayor on May 16, 2011, and won re-election in 2015. Lori Lightfoot, the city's first African American woman mayor and its first openly LGBTQ mayor, was elected to succeed Emanuel as mayor in 2019. All three city-wide elective offices were held by women (and women of color) for the first time in Chicago history: in addition to Lightfoot, the city clerk was Anna Valencia and the city treasurer was Melissa Conyears-Ervin. On May 15, 2023, Brandon Johnson assumed office as the 57th mayor of Chicago. Chicago is located in northeastern Illinois on the southwestern shores of freshwater Lake Michigan. It is the principal city in the Chicago metropolitan area, situated in both the Midwestern United States and the Great Lakes region. The city rests on a continental divide at the site of the Chicago Portage, connecting the Mississippi River and the Great Lakes watersheds. In addition to it lying beside Lake Michigan, two rivers—the Chicago River in downtown and the Calumet River in the industrial far South Side—flow either entirely or partially through the city. Chicago's history and economy are closely tied to its proximity to Lake Michigan. While the Chicago River historically handled much of the region's waterborne cargo, today's huge lake freighters use the city's Lake Calumet Harbor on the South Side. The lake also provides another positive effect: moderating Chicago's climate, making waterfront neighborhoods slightly warmer in winter and cooler in summer. When Chicago was founded in 1837, most of the early building was around the mouth of the Chicago River, as can be seen on a map of the city's original 58 blocks. The overall grade of the city's central, built-up areas is relatively consistent with the natural flatness of its overall natural geography, generally exhibiting only slight differentiation otherwise. The average land elevation is 579 ft (176.5 m) above sea level. While measurements vary somewhat, the lowest points are along the lake shore at 578 ft (176.2 m), while the highest point, at 672 ft (205 m), is the morainal ridge of Blue Island in the city's far south side. Lake Shore Drive runs adjacent to a large portion of Chicago's waterfront. Some of the parks along the waterfront include Lincoln Park, Grant Park, Burnham Park, and Jackson Park. There are 24 public beaches across 26 miles (42 km) of the waterfront. Landfill extends into portions of the lake providing space for Navy Pier, Northerly Island, the Museum Campus, and large portions of the McCormick Place Convention Center. Most of the city's high-rise commercial and residential buildings are close to the waterfront. An informal name for the entire Chicago metropolitan area is "Chicagoland", which generally means the city and all its suburbs, though different organizations have slightly different definitions. Major sections of the city include the central business district, called The Loop, and the North, South, and West Sides. The three sides of the city are represented on the Flag of Chicago by three horizontal white stripes. The North Side is the most-densely-populated residential section of the city, and many high-rises are located on this side of the city along the lakefront. The South Side is the largest section of the city, encompassing roughly 60% of the city's land area. The South Side contains most of the facilities of the Port of Chicago. In the late-1920s, sociologists at the University of Chicago subdivided the city into 77 distinct community areas, which can further be subdivided into over 200 informally defined neighborhoods. Chicago's streets were laid out in a street grid that grew from the city's original townsite plot, which was bounded by Lake Michigan on the east, North Avenue on the north, Wood Street on the west, and 22nd Street on the south. Streets following the Public Land Survey System section lines later became arterial streets in outlying sections. As new additions to the city were platted, city ordinance required them to be laid out with eight streets to the mile in one direction and sixteen in the other direction, about one street per 200 meters in one direction and one street per 100 meters in the other direction. The grid's regularity provided an efficient means of developing new real estate property. A scattering of diagonal streets, many of them originally Native American trails, also cross the city (Elston, Milwaukee, Ogden, Lincoln, etc.). Many additional diagonal streets were recommended in the Plan of Chicago, but only the extension of Ogden Avenue was ever constructed. In 2016, Chicago was ranked the sixth-most walkable large city in the United States. Many of the city's residential streets have a wide patch of grass or trees between the street and the sidewalk itself. This helps to keep pedestrians on the sidewalk further away from the street traffic. Chicago's Western Avenue is the longest continuous urban street in the world. Other notable streets include Michigan Avenue, State Street, 95th Street, Cicero Avenue, Clark Street, and Belmont Avenue. The City Beautiful movement inspired Chicago's boulevards and parkways. The destruction caused by the Great Chicago Fire led to the largest building boom in the history of the nation. In 1885, the first steel-framed high-rise building, the Home Insurance Building, rose in the city as Chicago ushered in the skyscraper era, which would then be followed by many other cities around the world. Today, Chicago's skyline is among the world's tallest and densest. Some of the United States' tallest towers are located in Chicago; Willis Tower (formerly Sears Tower) is the second tallest building in the Western Hemisphere after One World Trade Center, and Trump International Hotel and Tower is the third tallest in the country. The Loop's historic buildings include the Chicago Board of Trade Building, the Fine Arts Building, 35 East Wacker, and the Chicago Building, 860-880 Lake Shore Drive Apartments by Mies van der Rohe. Many other architects have left their impression on the Chicago skyline such as Daniel Burnham, Louis Sullivan, Charles B. Atwood, John Root, and Helmut Jahn. The Merchandise Mart, once first on the list of largest buildings in the world, currently listed as 44th-largest (as of 9 September 2013), had its own zip code until 2008, and stands near the junction of the North and South branches of the Chicago River. Presently, the four tallest buildings in the city are Willis Tower (formerly the Sears Tower, also a building with its own zip code), Trump International Hotel and Tower, the Aon Center (previously the Standard Oil Building), and the John Hancock Center. Industrial districts, such as some areas on the South Side, the areas along the Chicago Sanitary and Ship Canal, and the Northwest Indiana area are clustered. Chicago gave its name to the Chicago School and was home to the Prairie School, two movements in architecture. Multiple kinds and scales of houses, townhouses, condominiums, and apartment buildings can be found throughout Chicago. Large swaths of the city's residential areas away from the lake are characterized by brick bungalows built from the early 20th century through the end of World War II. Chicago is also a prominent center of the Polish Cathedral style of church architecture. The Chicago suburb of Oak Park was home to famous architect Frank Lloyd Wright, who had designed The Robie House located near the University of Chicago. A popular tourist activity is to take an architecture boat tour along the Chicago River. Chicago is famous for its outdoor public art with donors establishing funding for such art as far back as Benjamin Ferguson's 1905 trust. A number of Chicago's public art works are by modern figurative artists. Among these are Chagall's Four Seasons; the Chicago Picasso; Miro's Chicago; Calder's Flamingo; Oldenburg's Batcolumn; Moore's Large Interior Form, 1953-54, Man Enters the Cosmos and Nuclear Energy; Dubuffet's Monument with Standing Beast, Abakanowicz's Agora; and, Anish Kapoor's Cloud Gate which has become an icon of the city. Some events which shaped the city's history have also been memorialized by art works, including the Great Northern Migration (Saar) and the centennial of statehood for Illinois. Finally, two fountains near the Loop also function as monumental works of art: Plensa's Crown Fountain as well as Burnham and Bennett's Buckingham Fountain. The city lies within the typical hot-summer humid continental climate (Köppen: Dfa), and experiences four distinct seasons. Summers are hot and humid, with frequent heat waves. The July daily average temperature is 75.4 °F (24.1 °C), with afternoon temperatures peaking at 84.5 °F (29.2 °C). In a normal summer, temperatures reach at least 90 °F (32 °C) on 17 days, with lakefront locations staying cooler when winds blow off the lake. Winters are relatively cold and snowy. Blizzards do occur, such as in winter 2011. There are many sunny but cold days. The normal winter high from December through March is about 36 °F (2 °C). January and February are the coldest months. A polar vortex in January 2019 nearly broke the city's cold record of −27 °F (−33 °C), which was set on January 20, 1985. Measurable snowfall can continue through the first or second week of April. Spring and autumn are mild, short seasons, typically with low humidity. Dew point temperatures in the summer range from an average of 55.8 °F (13.2 °C) in June to 61.7 °F (16.5 °C) in July. They can reach nearly 80 °F (27 °C), such as during the July 2019 heat wave. The city lies within USDA plant hardiness zone 6a, transitioning to 5b in the suburbs. According to the National Weather Service, Chicago's highest official temperature reading of 105 °F (41 °C) was recorded on July 24, 1934. Midway Airport reached 109 °F (43 °C) one day prior and recorded a heat index of 125 °F (52 °C) during the 1995 heatwave. The lowest official temperature of −27 °F (−33 °C) was recorded on January 20, 1985, at O'Hare Airport. Most of the city's rainfall is brought by thunderstorms, averaging 38 a year. The region is prone to severe thunderstorms during the spring and summer which can produce large hail, damaging winds, and occasionally tornadoes. Like other major cities, Chicago experiences an urban heat island, making the city and its suburbs milder than surrounding rural areas, especially at night and in winter. The proximity to Lake Michigan tends to keep the Chicago lakefront somewhat cooler in summer and less brutally cold in winter than inland parts of the city and suburbs away from the lake. Northeast winds from wintertime cyclones departing south of the region sometimes bring the city lake-effect snow. As in the rest of the state of Illinois, Chicago forms part of the Central Time Zone. The border with the Eastern Time Zone is located a short distance to the east, used in Michigan and certain parts of Indiana. During its first hundred years, Chicago was one of the fastest-growing cities in the world. When founded in 1833, fewer than 200 people had settled on what was then the American frontier. By the time of its first census, seven years later, the population had reached over 4,000. In the forty years from 1850 to 1890, the city's population grew from slightly under 30,000 to over 1 million. At the end of the 19th century, Chicago was the fifth-largest city in the world, and the largest of the cities that did not exist at the dawn of the century. Within sixty years of the Great Chicago Fire of 1871, the population went from about 300,000 to over 3 million, and reached its highest ever recorded population of 3.6 million for the 1950 census. From the last two decades of the 19th century, Chicago was the destination of waves of immigrants from Ireland, Southern, Central and Eastern Europe, including Italians, Jews, Russians, Poles, Greeks, Lithuanians, Bulgarians, Albanians, Romanians, Turkish, Croatians, Serbs, Bosnians, Montenegrins and Czechs. To these ethnic groups, the basis of the city's industrial working class, were added an additional influx of African Americans from the American South—with Chicago's black population doubling between 1910 and 1920 and doubling again between 1920 and 1930. Chicago has a significant Bosnian population, many of whom arrived in the 1990s and 2000s. In the 1920s and 1930s, the great majority of African Americans moving to Chicago settled in a so‑called "Black Belt" on the city's South Side. A large number of blacks also settled on the West Side. By 1930, two-thirds of Chicago's black population lived in sections of the city which were 90% black in racial composition. Around that time, a lesser known fact about African Americans on the North Side is that the block of 4600 Winthrop Avenue in Uptown was the only block African Americans could live or open establishments. Chicago's South Side emerged as United States second-largest urban black concentration, following New York's Harlem. In 1990, Chicago's South Side and the adjoining south suburbs constituted the largest black majority region in the entire United States. Most of Chicago's foreign-born population were born in Mexico, Poland and India. Chicago's population declined in the latter half of the 20th century, from over 3.6 million in 1950 down to under 2.7 million by 2010. By the time of the official census count in 1990, it was overtaken by Los Angeles as the United States' second largest city. The city has seen a rise in population for the 2000 census and after a decrease in 2010, it rose again for the 2020 census. According to U.S. census estimates as of July 2019, Chicago's largest racial or ethnic group is non-Hispanic White at 32.8% of the population, Blacks at 30.1% and the Hispanic population at 29.0% of the population. Chicago has the third-largest LGBT population in the United States. In 2018, the Chicago Department of Health, estimated 7.5% of the adult population, approximately 146,000 Chicagoans, were LGBTQ. In 2015, roughly 4% of the population identified as LGBT. Since the 2013 legalization of same-sex marriage in Illinois, over 10,000 same-sex couples have wed in Cook County, a majority of them in Chicago. Chicago became a "de jure" sanctuary city in 2012 when Mayor Rahm Emanuel and the City Council passed the Welcoming City Ordinance. According to the U.S. Census Bureau's American Community Survey data estimates for 2008–2012, the median income for a household in the city was $47,408, and the median income for a family was $54,188. Male full-time workers had a median income of $47,074 versus $42,063 for females. About 18.3% of families and 22.1% of the population lived below the poverty line. In 2018, Chicago ranked seventh globally for the highest number of ultra-high-net-worth residents with roughly 3,300 residents worth more than $30 million. According to the 2008–2012 American Community Survey, the ancestral groups having 10,000 or more persons in Chicago were: Persons identifying themselves in "Other groups" were classified at 1.72 million, and unclassified or not reported were approximately 153,000. Religion in Chicago (2014) According to a 2014 study by the Pew Research Center, Christianity is the most prevalently practiced religion in Chicago (71%), with the city being the fourth-most religious metropolis in the United States after Dallas, Atlanta and Houston. Roman Catholicism and Protestantism are the largest branches (34% and 35% respectively), followed by Eastern Orthodoxy and Jehovah's Witnesses with 1% each. Chicago also has a sizable non-Christian population. Non-Christian groups include Irreligious (22%), Judaism (3%), Islam (2%), Buddhism (1%) and Hinduism (1%). Chicago is the headquarters of several religious denominations, including the Evangelical Covenant Church and the Evangelical Lutheran Church in America. It is the seat of several dioceses. The Fourth Presbyterian Church is one of the largest Presbyterian congregations in the United States based on memberships. Since the 20th century Chicago has also been the headquarters of the Assyrian Church of the East. In 2014 the Catholic Church was the largest individual Christian denomination (34%), with the Roman Catholic Archdiocese of Chicago being the largest Catholic jurisdiction. Evangelical Protestantism form the largest theological Protestant branch (16%), followed by Mainline Protestants (11%), and historically Black churches (8%). Among denominational Protestant branches, Baptists formed the largest group in Chicago (10%); followed by Nondenominational (5%); Lutherans (4%); and Pentecostals (3%). Non-Christian faiths accounted for 7% of the religious population in 2014. Judaism has at least 261,000 adherents which is 3% of the population, making it the second largest religion. A 2020 study estimated the total Jewish population of the Chicago metropolitan area, both religious and irreligious, at 319,600. The first two Parliament of the World's Religions in 1893 and 1993 were held in Chicago. Many international religious leaders have visited Chicago, including Mother Teresa, the Dalai Lama and Pope John Paul II in 1979. Chicago has the third-largest gross metropolitan product in the United States—about $670.5 billion according to September 2017 estimates. The city has also been rated as having the most balanced economy in the United States, due to its high level of diversification. The Chicago metropolitan area has the third-largest science and engineering work force of any metropolitan area in the nation. Chicago was the base of commercial operations for industrialists John Crerar, John Whitfield Bunn, Richard Teller Crane, Marshall Field, John Farwell, Julius Rosenwald, and many other commercial visionaries who laid the foundation for Midwestern and global industry. Chicago is a major world financial center, with the second-largest central business district in the United States, following Midtown Manhattan. The city is the seat of the Federal Reserve Bank of Chicago, the Bank's Seventh District. The city has major financial and futures exchanges, including the Chicago Stock Exchange, the Chicago Board Options Exchange (CBOE), and the Chicago Mercantile Exchange (the "Merc"), which is owned, along with the Chicago Board of Trade (CBOT), by Chicago's CME Group. In 2017, Chicago exchanges traded 4.7 billion derivatives with a face value of over one quadrillion dollars. Chase Bank has its commercial and retail banking headquarters in Chicago's Chase Tower. Academically, Chicago has been influential through the Chicago school of economics, which fielded 12 Nobel Prize winners. The city and its surrounding metropolitan area contain the third-largest labor pool in the United States with about 4.63 million workers. Illinois is home to 66 Fortune 1000 companies, including those in Chicago. The city of Chicago also hosts 12 Fortune Global 500 companies and 17 Financial Times 500 companies. The city claims three Dow 30 companies: aerospace giant Boeing, which moved its headquarters from Seattle to the Chicago Loop in 2001; McDonald's; and Walgreens Boots Alliance. For six consecutive years from 2013 through 2018, Chicago was ranked the nation's top metropolitan area for corporate relocations. However, three Fortune 500 companies left Chicago in 2022, leaving the city with 35, still second to New York City. Manufacturing, printing, publishing, and food processing also play major roles in the city's economy. Several medical products and services companies are headquartered in the Chicago area, including Baxter International, Boeing, Abbott Laboratories, and the Healthcare division of General Electric. Prominent food companies based in Chicago include the world headquarters of Conagra, Ferrara Candy Company, Kraft Heinz, McDonald's, Mondelez International, and Quaker Oats. Chicago has been a hub of the retail sector since its early development, with Montgomery Ward, Sears, and Marshall Field's. Today the Chicago metropolitan area is the headquarters of several retailers, including Walgreens, Sears, Ace Hardware, Claire's, ULTA Beauty, and Crate & Barrel. Late in the 19th century, Chicago was part of the bicycle craze, with the Western Wheel Company, which introduced stamping to the production process and significantly reduced costs, while early in the 20th century, the city was part of the automobile revolution, hosting the Brass Era car builder Bugmobile, which was founded there in 1907. Chicago was also the site of the Schwinn Bicycle Company. Chicago is a major world convention destination. The city's main convention center is McCormick Place. With its four interconnected buildings, it is the largest convention center in the nation and third-largest in the world. Chicago also ranks third in the U.S. (behind Las Vegas and Orlando) in number of conventions hosted annually. Chicago's minimum wage for non-tipped employees is one of the highest in the nation and reached $15 in 2021. The city's waterfront location and nightlife has attracted residents and tourists alike. Over a third of the city population is concentrated in the lakefront neighborhoods from Rogers Park in the north to South Shore in the south. The city has many upscale dining establishments as well as many ethnic restaurant districts. These districts include the Mexican American neighborhoods, such as Pilsen along 18th street, and La Villita along 26th Street; the Puerto Rican enclave of Paseo Boricua in the Humboldt Park neighborhood; Greektown, along South Halsted Street, immediately west of downtown; Little Italy, along Taylor Street; Chinatown in Armour Square; Polish Patches in West Town; Little Seoul in Albany Park around Lawrence Avenue; Little Vietnam near Broadway in Uptown; and the Desi area, along Devon Avenue in West Ridge. Downtown is the center of Chicago's financial, cultural, governmental and commercial institutions and the site of Grant Park and many of the city's skyscrapers. Many of the city's financial institutions, such as the CBOT and the Federal Reserve Bank of Chicago, are located within a section of downtown called "The Loop", which is an eight-block by five-block area of city streets that is encircled by elevated rail tracks. The term "The Loop" is largely used by locals to refer to the entire downtown area as well. The central area includes the Near North Side, the Near South Side, and the Near West Side, as well as the Loop. These areas contribute famous skyscrapers, abundant restaurants, shopping, museums, a stadium for the Chicago Bears, convention facilities, parkland, and beaches. Lincoln Park contains the Lincoln Park Zoo and the Lincoln Park Conservatory. The River North Gallery District features the nation's largest concentration of contemporary art galleries outside of New York City. Lakeview is home to Boystown, the city's large LGBT nightlife and culture center. The Chicago Pride Parade, held the last Sunday in June, is one of the world's largest with over a million people in attendance. North Halsted Street is the main thoroughfare of Boystown. The South Side neighborhood of Hyde Park is the home of former U.S. President Barack Obama. It also contains the University of Chicago, ranked one of the world's top ten universities, and the Museum of Science and Industry. The 6-mile (9.7 km) long Burnham Park stretches along the waterfront of the South Side. Two of the city's largest parks are also located on this side of the city: Jackson Park, bordering the waterfront, hosted the World's Columbian Exposition in 1893, and is the site of the aforementioned museum; and slightly west sits Washington Park. The two parks themselves are connected by a wide strip of parkland called the Midway Plaisance, running adjacent to the University of Chicago. The South Side hosts one of the city's largest parades, the annual African American Bud Billiken Parade and Picnic, which travels through Bronzeville to Washington Park. Ford Motor Company has an automobile assembly plant on the South Side in Hegewisch, and most of the facilities of the Port of Chicago are also on the South Side. The West Side holds the Garfield Park Conservatory, one of the largest collections of tropical plants in any U.S. city. Prominent Latino cultural attractions found here include Humboldt Park's Institute of Puerto Rican Arts and Culture and the annual Puerto Rican People's Parade, as well as the National Museum of Mexican Art and St. Adalbert's Church in Pilsen. The Near West Side holds the University of Illinois at Chicago and was once home to Oprah Winfrey's Harpo Studios, the site of which has been rebuilt as the global headquarters of McDonald's. The city's distinctive accent, made famous by its use in classic films like The Blues Brothers and television programs like the Saturday Night Live skit "Bill Swerski's Superfans", is an advanced form of Inland Northern American English. This dialect can also be found in other cities bordering the Great Lakes such as Cleveland, Milwaukee, Detroit, and Rochester, New York, and most prominently features a rearrangement of certain vowel sounds, such as the short 'a' sound as in "cat", which can sound more like "kyet" to outsiders. The accent remains well associated with the city. Renowned Chicago theater companies include the Goodman Theatre in the Loop; the Steppenwolf Theatre Company and Victory Gardens Theater in Lincoln Park; and the Chicago Shakespeare Theater at Navy Pier. Broadway In Chicago offers Broadway-style entertainment at five theaters: the Nederlander Theatre, CIBC Theatre, Cadillac Palace Theatre, Auditorium Building of Roosevelt University, and Broadway Playhouse at Water Tower Place. Polish language productions for Chicago's large Polish speaking population can be seen at the historic Gateway Theatre in Jefferson Park. Since 1968, the Joseph Jefferson Awards are given annually to acknowledge excellence in theater in the Chicago area. Chicago's theater community spawned modern improvisational theater, and includes the prominent groups The Second City and I.O. (formerly ImprovOlympic). The Chicago Symphony Orchestra (CSO) performs at Symphony Center, and is recognized as one of the best orchestras in the world. Also performing regularly at Symphony Center is the Chicago Sinfonietta, a more diverse and multicultural counterpart to the CSO. In the summer, many outdoor concerts are given in Grant Park and Millennium Park. Ravinia Festival, located 25 miles (40 km) north of Chicago, is the summer home of the CSO, and is a favorite destination for many Chicagoans. The Civic Opera House is home to the Lyric Opera of Chicago. The Lithuanian Opera Company of Chicago was founded by Lithuanian Chicagoans in 1956, and presents operas in Lithuanian. The Joffrey Ballet and Chicago Festival Ballet perform in various venues, including the Harris Theater in Millennium Park. Chicago has several other contemporary and jazz dance troupes, such as the Hubbard Street Dance Chicago and Chicago Dance Crash. Other live-music genre which are part of the city's cultural heritage include Chicago blues, Chicago soul, jazz, and gospel. The city is the birthplace of house music (a popular form of electronic dance music) and industrial music, and is the site of an influential hip hop scene. In the 1980s and 90s, the city was the global center for house and industrial music, two forms of music created in Chicago, as well as being popular for alternative rock, punk, and new wave. The city has been a center for rave culture, since the 1980s. A flourishing independent rock music culture brought forth Chicago indie. Annual festivals feature various acts, such as Lollapalooza and the Pitchfork Music Festival. Lollapalooza originated in Chicago in 1991 and at first travelled to many cities, but as of 2005 its home has been Chicago. A 2007 report on the Chicago music industry by the University of Chicago Cultural Policy Center ranked Chicago third among metropolitan U.S. areas in "size of music industry" and fourth among all U.S. cities in "number of concerts and performances". Chicago has a distinctive fine art tradition. For much of the twentieth century, it nurtured a strong style of figurative surrealism, as in the works of Ivan Albright and Ed Paschke. In 1968 and 1969, members of the Chicago Imagists, such as Roger Brown, Leon Golub, Robert Lostutter, Jim Nutt, and Barbara Rossi produced bizarre representational paintings. Henry Darger is one of the most celebrated figures of outsider art. In 2014, Chicago attracted 50.17 million domestic leisure travelers, 11.09 million domestic business travelers and 1.308 million overseas visitors. These visitors contributed more than US$13.7 billion to Chicago's economy. Upscale shopping along the Magnificent Mile and State Street, thousands of restaurants, as well as Chicago's eminent architecture, continue to draw tourists. The city is the United States' third-largest convention destination. A 2017 study by Walk Score ranked Chicago the sixth-most walkable of fifty largest cities in the United States. Most conventions are held at McCormick Place, just south of Soldier Field. Navy Pier, located just east of Streeterville, is 3,000 ft (910 m) long and houses retail stores, restaurants, museums, exhibition halls and auditoriums. Chicago was the first city in the world to ever erect a ferris wheel. The Willis Tower (formerly named Sears Tower) is a popular destination for tourists. Among the city's museums are the Adler Planetarium & Astronomy Museum, the Field Museum of Natural History, and the Shedd Aquarium. The Museum Campus joins the southern section of Grant Park, which includes the renowned Art Institute of Chicago. Buckingham Fountain anchors the downtown park along the lakefront. The University of Chicago's Institute for the Study of Ancient Cultures, West Asia & North Africa has an extensive collection of ancient Egyptian and Near Eastern archaeological artifacts. Other museums and galleries in Chicago include the Chicago History Museum, the Driehaus Museum, the DuSable Museum of African American History, the Museum of Contemporary Art, the Peggy Notebaert Nature Museum, the Polish Museum of America, the Museum of Broadcast Communications, the Pritzker Military Library, the Chicago Architecture Foundation, and the Museum of Science and Industry. Chicago lays claim to a large number of regional specialties that reflect the city's ethnic and working-class roots. Included among these are its nationally renowned deep-dish pizza; this style is said to have originated at Pizzeria Uno. The Chicago-style thin crust is also popular in the city. Certain Chicago pizza favorites include Lou Malnati's and Giordano's. The Chicago-style hot dog, typically an all-beef hot dog, is loaded with an array of toppings that often includes pickle relish, yellow mustard, pickled sport peppers, tomato wedges, dill pickle spear and topped off with celery salt on a poppy seed bun. Enthusiasts of the Chicago-style hot dog frown upon the use of ketchup as a garnish, but may prefer to add giardiniera. A distinctly Chicago sandwich, the Italian beef sandwich is thinly sliced beef simmered in au jus and served on an Italian roll with sweet peppers or spicy giardiniera. A popular modification is the Combo—an Italian beef sandwich with the addition of an Italian sausage. The Maxwell Street Polish is a grilled or deep-fried kielbasa—on a hot dog roll, topped with grilled onions, yellow mustard, and hot sport peppers. Chicken Vesuvio is roasted bone-in chicken cooked in oil and garlic next to garlicky oven-roasted potato wedges and a sprinkling of green peas. The Puerto Rican-influenced jibarito is a sandwich made with flattened, fried green plantains instead of bread. The mother-in-law is a tamale topped with chili and served on a hot dog bun. The tradition of serving the Greek dish saganaki while aflame has its origins in Chicago's Greek community. The appetizer, which consists of a square of fried cheese, is doused with Metaxa and flambéed table-side. Chicago-style barbecue features hardwood smoked rib tips and hot links which were traditionally cooked in an aquarium smoker, a Chicago invention. Annual festivals feature various Chicago signature dishes, such as Taste of Chicago and the Chicago Food Truck Festival. One of the world's most decorated restaurants and a recipient of three Michelin stars, Alinea is located in Chicago. Well-known chefs who have had restaurants in Chicago include: Charlie Trotter, Rick Tramonto, Grant Achatz, and Rick Bayless. In 2003, Robb Report named Chicago the country's "most exceptional dining destination". Chicago literature finds its roots in the city's tradition of lucid, direct journalism, lending to a strong tradition of social realism. In the Encyclopedia of Chicago, Northwestern University Professor Bill Savage describes Chicago fiction as prose which tries to "capture the essence of the city, its spaces and its people". The challenge for early writers was that Chicago was a frontier outpost that transformed into a global metropolis in the span of two generations. Narrative fiction of that time, much of it in the style of "high-flown romance" and "genteel realism", needed a new approach to describe the urban social, political, and economic conditions of Chicago. Nonetheless, Chicagoans worked hard to create a literary tradition that would stand the test of time, and create a "city of feeling" out of concrete, steel, vast lake, and open prairie. Much notable Chicago fiction focuses on the city itself, with social criticism keeping exultation in check. At least three short periods in the history of Chicago have had a lasting influence on American literature. These include from the time of the Great Chicago Fire to about 1900, what became known as the Chicago Literary Renaissance in the 1910s and early 1920s, and the period of the Great Depression through the 1940s. What would become the influential Poetry magazine was founded in 1912 by Harriet Monroe, who was working as an art critic for the Chicago Tribune. The magazine discovered such poets as Gwendolyn Brooks, James Merrill, and John Ashbery. T. S. Eliot's first professionally published poem, "The Love Song of J. Alfred Prufrock", was first published by Poetry. Contributors have included Ezra Pound, William Butler Yeats, William Carlos Williams, Langston Hughes, and Carl Sandburg, among others. The magazine was instrumental in launching the Imagist and Objectivist poetic movements. From the 1950s through 1970s, American poetry continued to evolve in Chicago. In the 1980s, a modern form of poetry performance began in Chicago, the poetry slam. The city has two Major League Baseball (MLB) teams: the Chicago Cubs of the National League play in Wrigley Field on the North Side; and the Chicago White Sox of the American League play in Guaranteed Rate Field on the South Side. The two teams have faced each other in a World Series only once, in 1906. The Cubs are the oldest Major League Baseball team to have never changed their city; they have played in Chicago since 1871. They had the dubious honor of having the longest championship drought in American professional sports, failing to win a World Series between 1908 and 2016. The White Sox have played on the South Side continuously since 1901. They have won three World Series titles (1906, 1917, 2005) and six American League pennants, including the first in 1901. The Chicago Bears, one of the last two remaining charter members of the National Football League (NFL), have won nine NFL Championships, including the 1985 Super Bowl XX. The Bears play their home games at Soldier Field. The Chicago Bulls of the National Basketball Association (NBA) is one of the most recognized basketball teams in the world. During the 1990s, with Michael Jordan leading them, the Bulls won six NBA championships in eight seasons. The Chicago Blackhawks of the National Hockey League (NHL) began play in 1926, and are one of the "Original Six" teams of the NHL. The Blackhawks have won six Stanley Cups, including in 2010, 2013, and 2015. Both the Bulls and the Blackhawks play at the United Center. Chicago Fire FC is a member of Major League Soccer (MLS) and plays at Soldier Field. The Fire have won one league title and four U.S. Open Cups, since their founding in 1997. In 1994, the United States hosted a successful FIFA World Cup with games played at Soldier Field. The Chicago Red Stars are a team in the National Women's Soccer League (NWSL). They previously played in Women's Professional Soccer (WPS), of which they were a founding member, before joining the NWSL in 2013. They play at SeatGeek Stadium in Bridgeview, Illinois. The Chicago Sky is a professional basketball team playing in the Women's National Basketball Association (WNBA). They play home games at the Wintrust Arena. The team was founded before the 2006 WNBA season began. The Chicago Marathon has been held each year since 1977 except for 1987, when a half marathon was run in its place. The Chicago Marathon is one of six World Marathon Majors. Five area colleges play in Division I conferences: two from major conferences—the DePaul Blue Demons (Big East Conference) and the Northwestern Wildcats (Big Ten Conference)—and three from other D1 conferences—the Chicago State Cougars (Western Athletic Conference); the Loyola Ramblers (Atlantic 10 Conference); and the UIC Flames (Missouri Valley Conference). Chicago has also entered into esports with the creation of the Chicago Huntsmen, a professional Call of Duty team that participates within the CDL. When Chicago was incorporated in 1837, it chose the motto Urbs in Horto, a Latin phrase which means "City in a Garden". Today, the Chicago Park District consists of more than 570 parks with over 8,000 acres (3,200 ha) of municipal parkland. There are 31 sand beaches, a plethora of museums, two world-class conservatories, and 50 nature areas. Lincoln Park, the largest of the city's parks, covers 1,200 acres (490 ha) and has over 20 million visitors each year, making it third in the number of visitors after Central Park in New York City, and the National Mall and Memorial Parks in Washington, D.C. There is a historic boulevard system, a network of wide, tree-lined boulevards which connect a number of Chicago parks. The boulevards and the parks were authorized by the Illinois legislature in 1869. A number of Chicago neighborhoods emerged along these roadways in the 19th century. The building of the boulevard system continued intermittently until 1942. It includes nineteen boulevards, eight parks, and six squares, along twenty-six miles of interconnected streets. The Chicago Park Boulevard System Historic District was listed on the National Register of Historic Places in 2018. With berths for more than 6,000 boats, the Chicago Park District operates the nation's largest municipal harbor system. In addition to ongoing beautification and renewal projects for the existing parks, a number of new parks have been added in recent years, such as the Ping Tom Memorial Park in Chinatown, DuSable Park on the Near North Side, and most notably, Millennium Park, which is in the northwestern corner of one of Chicago's oldest parks, Grant Park in the Chicago Loop. The wealth of greenspace afforded by Chicago's parks is further augmented by the Cook County Forest Preserves, a network of open spaces containing forest, prairie, wetland, streams, and lakes that are set aside as natural areas which lie along the city's outskirts, including both the Chicago Botanic Garden in Glencoe and the Brookfield Zoo in Brookfield. Washington Park is also one of the city's biggest parks; covering nearly 400 acres (160 ha). The park is listed on the National Register of Historic Places listings in South Side Chicago. The government of the City of Chicago is divided into executive and legislative branches. The mayor of Chicago is the chief executive, elected by general election for a term of four years, with no term limits. The current mayor is Brandon Johnson. The mayor appoints commissioners and other officials who oversee the various departments. As well as the mayor, Chicago's clerk and treasurer are also elected citywide. The City Council is the legislative branch and is made up of 50 alderpersons, one elected from each ward in the city. The council takes official action through the passage of ordinances and resolutions and approves the city budget. The Chicago Police Department provides law enforcement and the Chicago Fire Department provides fire suppression and emergency medical services for the city and its residents. Civil and criminal law cases are heard in the Cook County Circuit Court of the State of Illinois court system, or in the Northern District of Illinois, in the federal system. In the state court, the public prosecutor is the Illinois state's attorney; in the Federal court it is the United States attorney. During much of the last half of the 19th century, Chicago's politics were dominated by a growing Democratic Party organization. During the 1880s and 1890s, Chicago had a powerful radical tradition with large and highly organized socialist, anarchist and labor organizations. For much of the 20th century, Chicago has been among the largest and most reliable Democratic strongholds in the United States; with Chicago's Democratic vote the state of Illinois has been "solid blue" in presidential elections since 1992. Even before then, it was not unheard of for Republican presidential candidates to win handily in downstate Illinois, only to lose statewide due to large Democratic margins in Chicago. The citizens of Chicago have not elected a Republican mayor since 1927, when William Thompson was voted into office. The strength of the party in the city is partly a consequence of Illinois state politics, where the Republicans have come to represent rural and farm concerns while the Democrats support urban issues such as Chicago's public school funding. Chicago contains less than 25% of the state's population, but it is split between eight of Illinois' 17 districts in the United States House of Representatives. All eight of the city's representatives are Democrats; only two Republicans have represented a significant portion of the city since 1973, for one term each: Robert P. Hanrahan from 1973 to 1975, and Michael Patrick Flanagan from 1995 to 1997. Machine politics persisted in Chicago after the decline of similar machines in other large U.S. cities. During much of that time, the city administration found opposition mainly from a liberal "independent" faction of the Democratic Party. The independents finally gained control of city government in 1983 with the election of Harold Washington (in office 1983–1987). From 1989 until May 16, 2011, Chicago was under the leadership of its longest-serving mayor, Richard M. Daley, the son of Richard J. Daley. Because of the dominance of the Democratic Party in Chicago, the Democratic primary vote held in the spring is generally more significant than the general elections in November for U.S. House and Illinois State seats. The aldermanic, mayoral, and other city offices are filled through nonpartisan elections with runoffs as needed. The city is home of former United States President Barack Obama and First Lady Michelle Obama; Barack Obama was formerly a state legislator representing Chicago and later a U.S. senator. The Obamas' residence is located near the University of Chicago in Kenwood on the city's south side. Chicago's crime rate in 2020 was 3,926 per 100,000 people. Chicago experienced major rises in violent crime in the 1920s, in the late 1960s, and in the 2020s. Chicago's biggest criminal justice challenges have changed little over the last 50 years, and statistically reside with homicide, armed robbery, gang violence, and aggravated battery. Chicago has attracted attention for a high murder rate and perceived crime rate compared to other major cities like New York and Los Angeles. However, while it has a large absolute number of crimes due to its size, Chicago is not among the top-25 most violent cities in the United States. Murder rates in Chicago vary greatly depending on the neighborhood in question. The neighborhoods of Englewood on the South Side, and Austin on the West side, for example, have homicide rates that are ten times higher than other parts of the city. Chicago has an estimated population of over 100,000 active gang members from nearly 60 factions. According to reports in 2013, "most of Chicago's violent crime comes from gangs trying to maintain control of drug-selling territories", and is specifically related to the activities of the Sinaloa Cartel, which is active in several American cities. Violent crime rates vary significantly by area of the city, with more economically developed areas having low rates, but other sections have much higher rates of crime. In 2013, the violent crime rate was 910 per 100,000 people; the murder rate was 10.4 – while high crime districts saw 38.9, low crime districts saw 2.5 murders per 100,000. Chicago has a long history of public corruption that regularly draws the attention of federal law enforcement and federal prosecutors. From 2012 to 2019, 33 Chicago alderpersons were convicted on corruption charges, roughly one third of those elected in the time period. A report from the Office of the Legislative Inspector General noted that over half of Chicago's elected alderpersons took illegal campaign contributions in 2013. Most corruption cases in Chicago are prosecuted by the U.S. Attorney's office, as legal jurisdiction makes most offenses punishable as a federal crime. Chicago Public Schools (CPS) is the governing body of the school district that contains over 600 public elementary and high schools citywide, including several selective-admission magnet schools. There are eleven selective enrollment high schools in the Chicago Public Schools, designed to meet the needs of Chicago's most academically advanced students. These schools offer a rigorous curriculum with mainly honors and Advanced Placement (AP) courses. Walter Payton College Prep High School is ranked number one in the city of Chicago and the state of Illinois. Chicago high school rankings are determined by the average test scores on state achievement tests. The district, with an enrollment exceeding 400,545 students (2013–2014 20th Day Enrollment), is the third-largest in the U.S. On September 10, 2012, teachers for the Chicago Teachers Union went on strike for the first time since 1987 over pay, resources and other issues. According to data compiled in 2014, Chicago's "choice system", where students who test or apply and may attend one of a number of public high schools (there are about 130), sorts students of different achievement levels into different schools (high performing, middle performing, and low performing schools). Chicago has a network of Lutheran schools, and several private schools are run by other denominations and faiths, such as the Ida Crown Jewish Academy in West Ridge. The Roman Catholic Archdiocese of Chicago operates Catholic schools, that include Jesuit preparatory schools and others. A number of private schools are completely secular. There are also the private Chicago Academy for the Arts, a high school focused on six different categories of the arts and the public Chicago High School for the Arts, a high school focused on five categories (visual arts, theatre, musical theatre, dance, and music) of the arts. The Chicago Public Library system operates 3 regional libraries and 77 neighbourhood branches, including the central library. Since the 1850s, Chicago has been a world center of higher education and research with several universities. These institutions consistently rank among the top "National Universities" in the United States, as determined by U.S. News & World Report. Highly regarded universities in Chicago and the surrounding area are: the University of Chicago; Northwestern University; Illinois Institute of Technology; Loyola University Chicago; DePaul University; Columbia College Chicago and University of Illinois at Chicago. Other notable schools include: Chicago State University; the School of the Art Institute of Chicago; East–West University; National Louis University; North Park University; Northeastern Illinois University; Robert Morris University Illinois; Roosevelt University; Saint Xavier University; Rush University; and Shimer College. William Rainey Harper, the first president of the University of Chicago, was instrumental in the creation of the junior college concept, establishing nearby Joliet Junior College as the first in the nation in 1901. His legacy continues with the multiple community colleges in the Chicago proper, including the seven City Colleges of Chicago: Richard J. Daley College, Kennedy–King College, Malcolm X College, Olive–Harvey College, Truman College, Harold Washington College and Wilbur Wright College, in addition to the privately held MacCormac College. Chicago also has a high concentration of post-baccalaureate institutions, graduate schools, seminaries, and theological schools, such as the Adler School of Professional Psychology, The Chicago School of Professional Psychology, the Erikson Institute, The Institute for Clinical Social Work, the Lutheran School of Theology at Chicago, the Catholic Theological Union, the Moody Bible Institute, and the University of Chicago Divinity School. The Chicago metropolitan area is a major media hub and the third-largest media market in North America, after New York City and Los Angeles. Each of the big four U.S. television networks, CBS, ABC, NBC and Fox, directly owns and operates a high-definition television station in Chicago (WBBM 2, WLS 7, WMAQ 5 and WFLD 32, respectively). Former CW affiliate WGN-TV 9, which was owned from its inception by Tribune Broadcasting (now owned by the Nexstar Media Group since 2019), is carried with some programming differences, as "WGN America" on cable and satellite TV nationwide and in parts of the Caribbean. WGN America eventually became NewsNation in 2021. Chicago has also been the home of several prominent talk shows, including The Oprah Winfrey Show, Steve Harvey Show, The Rosie Show, The Jerry Springer Show, The Phil Donahue Show, The Jenny Jones Show, and more. The city also has one PBS member station (its second: WYCC 20, removed its affiliation with PBS in 2017): WTTW 11, producer of shows such as Sneak Previews, The Frugal Gourmet, Lamb Chop's Play-Along and The McLaughlin Group. As of 2018, Windy City Live is Chicago's only daytime talk show, which is hosted by Val Warner and Ryan Chiaverini at ABC7 Studios with a live weekday audience. Since 1999, Judge Mathis also films his syndicated arbitration-based reality court show at the NBC Tower. Beginning in January 2019, Newsy began producing 12 of its 14 hours of live news programming per day from its new facility in Chicago. Most of Chicago's television stations are owned and operated by the big television network companies. They are: WBBM-TV, owned and operated by CBS broadcasting on channel 2. WMAQ-TV, owned and operated by NBC broadcasting on channel 5. WLS-TV, owned and operated by ABC broadcasting on channel 7. WGN-TV, an independent station owned by Nexstar Media Group broadcasting on channel 9. WTTW, a PBS member station owned by Window to the World Communications, Inc broadcasting on channel 11. WCIU-TV, a CW and MeTV affiliate broadcasting on channel 26. WFLD, owned and operated by Fox broadcasting on channel 32. WWTO-TV, owned and operated by TBN, licensed in Naperville, broadcasting on channel 35. WCPX-TV,owned and operated by Ion Television broadcasting on channel 38. WSNS-TV, owned and operated by Telemundo broadcasting on channel 44. WYIN, a PBS member station owned by Northwest Indiana Public Broadcasting, Inc. licensed in Gary, Indiana, broadcasting on channel 56. WTVK, an independent station owned by Venture Technologies Group, licensed in Oswego, Illinois, broadcasting on channel 59. WXFT-DT, owned an operated by Unimas broadcasting on channel 60. WJYS, an independent station owned by Millennial Telecommunications, Inc., licensed to Hammond, Indiana, broadcasting on channel 62. WGBO-DT, owned and operated by Univision broadcasting on channel 66. Two major daily newspapers are published in Chicago: the Chicago Tribune and the Chicago Sun-Times, with the Tribune having the larger circulation. There are also several regional and special-interest newspapers and magazines, such as Chicago, the Dziennik Związkowy (Polish Daily News), Draugas (the Lithuanian daily newspaper), the Chicago Reader, the SouthtownStar, the Chicago Defender, the Daily Herald, Newcity, StreetWise and the Windy City Times. The entertainment and cultural magazine Time Out Chicago and GRAB magazine are also published in the city, as well as local music magazine Chicago Innerview. In addition, Chicago is the home of satirical national news outlet, The Onion, as well as its sister pop-culture publication, The A.V. Club. Chicago has five 50,000 watt AM radio stations: the CBS Radio-owned WBBM and WSCR; the Tribune Broadcasting-owned WGN; the Cumulus Media-owned WLS; and the ESPN Radio-owned WMVP. Chicago is also home to a number of national radio shows, including Beyond the Beltway with Bruce DuMont on Sunday evenings. Chicago Public Radio produces nationally aired programs such as PRI's This American Life and NPR's Wait Wait...Don't Tell Me!. Chicago is a major transportation hub in the United States. It is an important component in global distribution, as it is the third-largest inter-modal port in the world after Hong Kong and Singapore. The city of Chicago has a higher than average percentage of households without a car. In 2015, 26.5 percent of Chicago households were without a car, and increased slightly to 27.5 percent in 2016. The national average was 8.7 percent in 2016. Chicago averaged 1.12 cars per household in 2016, compared to a national average of 1.8. Chicago has many parking garages to accommodate for commuters and local residents. Some of the larger garages downtown include Grant Park Garage, East Monroe Street Garage, and Millennium Park Garage. Chicago since 2009 has relinquished rights to its public street parking. In 2008, as Chicago struggled to close a growing budget deficit, the city agreed to a 75-year, $1.16 billion deal to lease its parking meter system to an operating company created by Morgan Stanley, called Chicago Parking Meters LLC. Daley said the "agreement is very good news for the taxpayers of Chicago because it will provide more than $1 billion in net proceeds that can be used during this very difficult economy." The rights of the parking ticket lease end in 2081, and since 2022 have already recouped over $1.5 billion in revenue for Chicago Parking Meters LLC investors. Seven mainline and four auxiliary interstate highways (55, 57, 65 (only in Indiana), 80 (also in Indiana), 88, 90 (also in Indiana), 94 (also in Indiana), 190, 290, 294, and 355) run through Chicago and its suburbs. Segments that link to the city center are named after influential politicians, with three of them named after former U.S. Presidents (Eisenhower, Kennedy, and Reagan) and one named after two-time Democratic candidate Adlai Stevenson. The Kennedy and Dan Ryan Expressways are the busiest state maintained routes in the entire state of Illinois. The Regional Transportation Authority (RTA) coordinates the operation of the three service boards: CTA, Metra, and Pace. Greyhound Lines provides inter-city bus service to and from the city at the Chicago Bus Station, and Chicago is also the hub for the Midwest network of Megabus (North America). Amtrak long distance and commuter rail services originate from Union Station. Chicago is one of the largest hubs of passenger rail service in the nation. The services terminate in the San Francisco area, Washington, D.C., New York City, New Orleans, Portland, Seattle, Milwaukee, Quincy, St. Louis, Carbondale, Boston, Grand Rapids, Port Huron, Pontiac, Los Angeles, and San Antonio. Future services will terminate at Rockford and Moline. An attempt was made in the early 20th century to link Chicago with New York City via the Chicago – New York Electric Air Line Railroad. Parts of this were built, but it was never completed. In July 2013, the bicycle-sharing system Divvy was launched with 750 bikes and 75 docking stations It is operated by Lyft for the Chicago Department of Transportation. As of July 2019, Divvy operated 5800 bicycles at 608 stations, covering almost all of the city, excluding Pullman, Rosedale, Beverly, Belmont Cragin and Edison Park. In May 2019, The City of Chicago announced its Chicago's Electric Shared Scooter Pilot Program, scheduled to run from June 15 to October 15. The program started on June 15 with 10 different scooter companies, including scooter sharing market leaders Bird, Jump, Lime and Lyft. Each company was allowed to bring 250 electric scooters, although both Bird and Lime claimed that they experienced a higher demand for their scooters. The program ended on October 15, with nearly 800,000 rides taken. Chicago is the largest hub in the railroad industry. All five Class I railroads meet in Chicago. As of 2002, severe freight train congestion caused trains to take as long to get through the Chicago region as it took to get there from the West Coast of the country (about 2 days). According to U.S. Department of Transportation, the volume of imported and exported goods transported via rail to, from, or through Chicago is forecast to increase nearly 150 percent between 2010 and 2040. CREATE, the Chicago Region Environmental and Transportation Efficiency Program, comprises about 70 programs, including crossovers, overpasses and underpasses, that intend to significantly improve the speed of freight movements in the Chicago area. Chicago is served by O'Hare International Airport, the world's busiest airport measured by airline operations, on the far Northwest Side, and Midway International Airport on the Southwest Side. In 2005, O'Hare was the world's busiest airport by aircraft movements and the second-busiest by total passenger traffic. Both O'Hare and Midway are owned and operated by the City of Chicago. Gary/Chicago International Airport and Chicago Rockford International Airport, located in Gary, Indiana and Rockford, Illinois, respectively, can serve as alternative Chicago area airports, however they do not offer as many commercial flights as O'Hare and Midway. In recent years the state of Illinois has been leaning towards building an entirely new airport in the Illinois suburbs of Chicago. The City of Chicago is the world headquarters for United Airlines, the world's third-largest airline. The Port of Chicago consists of several major port facilities within the city of Chicago operated by the Illinois International Port District (formerly known as the Chicago Regional Port District). The central element of the Port District, Calumet Harbor, is maintained by the U.S. Army Corps of Engineers. Electricity for most of northern Illinois is provided by Commonwealth Edison, also known as ComEd. Their service territory borders Iroquois County to the south, the Wisconsin border to the north, the Iowa border to the west and the Indiana border to the east. In northern Illinois, ComEd (a division of Exelon) operates the greatest number of nuclear generating plants in any U.S. state. Because of this, ComEd reports indicate that Chicago receives about 75% of its electricity from nuclear power. Recently, the city began installing wind turbines on government buildings to promote renewable energy. Natural gas is provided by Peoples Gas, a subsidiary of Integrys Energy Group, which is headquartered in Chicago. Domestic and industrial waste was once incinerated but it is now landfilled, mainly in the Calumet area. From 1995 to 2008, the city had a blue bag program to divert recyclable refuse from landfills. Because of low participation in the blue bag programs, the city began a pilot program for blue bin recycling like other cities. This proved successful and blue bins were rolled out across the city. The Illinois Medical District is on the Near West Side. It includes Rush University Medical Center, ranked as the second best hospital in the Chicago metropolitan area by U.S. News & World Report for 2014–16, the University of Illinois Medical Center at Chicago, Jesse Brown VA Hospital, and John H. Stroger Jr. Hospital of Cook County, one of the busiest trauma centers in the nation. Two of the country's premier academic medical centers reside in Chicago, including Northwestern Memorial Hospital and the University of Chicago Medical Center. The Chicago campus of Northwestern University includes the Feinberg School of Medicine; Northwestern Memorial Hospital, which is ranked as the best hospital in the Chicago metropolitan area by U.S. News & World Report for 2017–18; the Shirley Ryan AbilityLab (formerly named the Rehabilitation Institute of Chicago), which is ranked the best U.S. rehabilitation hospital by U.S. News & World Report; the new Prentice Women's Hospital; and Ann & Robert H. Lurie Children's Hospital of Chicago. The University of Illinois College of Medicine at UIC is the second largest medical school in the United States (2,600 students including those at campuses in Peoria, Rockford and Urbana–Champaign). In addition, the Chicago Medical School and Loyola University Chicago's Stritch School of Medicine are located in the suburbs of North Chicago and Maywood, respectively. The Midwestern University Chicago College of Osteopathic Medicine is in Downers Grove. The American Medical Association, Accreditation Council for Graduate Medical Education, Accreditation Council for Continuing Medical Education, American Osteopathic Association, American Dental Association, Academy of General Dentistry, Academy of Nutrition and Dietetics, American Association of Nurse Anesthetists, American College of Surgeons, American Society for Clinical Pathology, American College of Healthcare Executives, the American Hospital Association and Blue Cross and Blue Shield Association are all based in Chicago.	[ { "paragraph_id": 0, "text": "Chicago (/ʃɪˈkɑːɡoʊ/ shih-KAH-goh, locally also /ʃɪˈkɔːɡoʊ/ shih-KAW-goh; Miami-Illinois: Shikaakwa; Ojibwe: Zhigaagong) is the most populous city in the U.S. state of Illinois and the third-most populous in the United States after New York City and Los Angeles. With a population of 2,746,388 in the 2020 census, it is also the most populous city in the Midwest. As the seat of Cook County, the second-most populous county in the U.S., Chicago is the center of the Chicago metropolitan area.", "title": "" }, { "paragraph_id": 1, "text": "Located on the shore of Lake Michigan, Chicago was incorporated as a city in 1837 near a portage between the Great Lakes and the Mississippi River watershed. It grew rapidly in the mid-19th century. In 1871, the Great Chicago Fire destroyed several square miles and left more than 100,000 homeless, but Chicago's population continued to grow. Chicago made noted contributions to urban planning and architecture, such as the Chicago School, the development of the City Beautiful Movement, and the steel-framed skyscraper.", "title": "" }, { "paragraph_id": 2, "text": "Chicago is an international hub for finance, culture, commerce, industry, education, technology, telecommunications, and transportation. It has the largest and most diverse derivatives market in the world, generating 20% of all volume in commodities and financial futures alone. O'Hare International Airport is routinely ranked among the world's top six busiest airports by passenger traffic, and the region is also the nation's railroad hub. The Chicago area has one of the highest gross domestic products (GDP) in the world, generating $689 billion in 2018. Chicago's economy is diverse, with no single industry employing more than 14% of the workforce.", "title": "" }, { "paragraph_id": 3, "text": "Chicago is a major tourist destination. Chicago's culture has contributed much to the visual arts, literature, film, theater, comedy (especially improvisational comedy), food, dance, and music (particularly jazz, blues, soul, hip-hop, gospel, and electronic dance music, including house music). Chicago is home to the Chicago Symphony Orchestra and the Lyric Opera of Chicago, while the Art Institute of Chicago provides an influential visual arts museum and art school. The Chicago area also hosts the University of Chicago, Northwestern University, and the University of Illinois Chicago, among other institutions of learning. Chicago has professional sports teams in each of the major professional leagues, including two Major League Baseball teams.", "title": "" }, { "paragraph_id": 4, "text": "The name Chicago is derived from a French rendering of the indigenous Miami-Illinois word shikaakwa for a wild relative of the onion; it is known to botanists as Allium tricoccum and known more commonly as \"ramps\". The first known reference to the site of the current city of Chicago as \"Checagou\" was by Robert de LaSalle around 1679 in a memoir. Henri Joutel, in his journal of 1688, noted that the eponymous wild \"garlic\" grew profusely in the area. According to his diary of late September 1687:", "title": "Etymology and nicknames" }, { "paragraph_id": 5, "text": "... when we arrived at the said place called \"Chicagou\" which, according to what we were able to learn of it, has taken this name because of the quantity of garlic which grows in the forests in this region.", "title": "Etymology and nicknames" }, { "paragraph_id": 6, "text": "The city has had several nicknames throughout its history, such as the Windy City, Chi-Town, Second City, and City of the Big Shoulders.", "title": "Etymology and nicknames" }, { "paragraph_id": 7, "text": "In the mid-18th century, the area was inhabited by the Potawatomi, an indigenous tribe who had succeeded the Miami and Sauk and Fox peoples in this region.", "title": "History" }, { "paragraph_id": 8, "text": "The first known permanent settler in Chicago was trader Jean Baptiste Point du Sable. Du Sable was of African descent, perhaps born in the French colony of Saint-Domingue (Haiti), and established the settlement in the 1780s. He is commonly known as the \"Founder of Chicago\".", "title": "History" }, { "paragraph_id": 9, "text": "In 1795, following the victory of the new United States in the Northwest Indian War, an area that was to be part of Chicago was turned over to the U.S. for a military post by native tribes in accordance with the Treaty of Greenville. In 1803, the U.S. Army constructed Fort Dearborn, which was destroyed during the War of 1812 in the Battle of Fort Dearborn by the Potawatomi before being later rebuilt.", "title": "History" }, { "paragraph_id": 10, "text": "After the War of 1812, the Ottawa, Ojibwe, and Potawatomi tribes ceded additional land to the United States in the 1816 Treaty of St. Louis. The Potawatomi were forcibly removed from their land after the 1833 Treaty of Chicago and sent west of the Mississippi River as part of the federal policy of Indian removal.", "title": "History" }, { "paragraph_id": 11, "text": "On August 12, 1833, the Town of Chicago was organized with a population of about 200. Within seven years it grew to more than 6,000 people. On June 15, 1835, the first public land sales began with Edmund Dick Taylor as Receiver of Public Monies. The City of Chicago was incorporated on Saturday, March 4, 1837, and for several decades was the world's fastest-growing city.", "title": "History" }, { "paragraph_id": 12, "text": "As the site of the Chicago Portage, the city became an important transportation hub between the eastern and western United States. Chicago's first railway, Galena and Chicago Union Railroad, and the Illinois and Michigan Canal opened in 1848. The canal allowed steamboats and sailing ships on the Great Lakes to connect to the Mississippi River.", "title": "History" }, { "paragraph_id": 13, "text": "A flourishing economy brought residents from rural communities and immigrants from abroad. Manufacturing and retail and finance sectors became dominant, influencing the American economy. The Chicago Board of Trade (established 1848) listed the first-ever standardized \"exchange-traded\" forward contracts, which were called futures contracts.", "title": "History" }, { "paragraph_id": 14, "text": "In the 1850s, Chicago gained national political prominence as the home of Senator Stephen Douglas, the champion of the Kansas–Nebraska Act and the \"popular sovereignty\" approach to the issue of the spread of slavery. These issues also helped propel another Illinoisan, Abraham Lincoln, to the national stage. Lincoln was nominated in Chicago for U.S. president at the 1860 Republican National Convention, which was held in a purpose-built auditorium called the Wigwam. He defeated Douglas in the general election, and this set the stage for the American Civil War.", "title": "History" }, { "paragraph_id": 15, "text": "To accommodate rapid population growth and demand for better sanitation, the city improved its infrastructure. In February 1856, Chicago's Common Council approved Chesbrough's plan to build the United States' first comprehensive sewerage system. The project raised much of central Chicago to a new grade with the use of jackscrews for raising buildings. While elevating Chicago, and at first improving the city's health, the untreated sewage and industrial waste now flowed into the Chicago River, and subsequently into Lake Michigan, polluting the city's primary freshwater source.", "title": "History" }, { "paragraph_id": 16, "text": "The city responded by tunneling two miles (3.2 km) out into Lake Michigan to newly built water cribs. In 1900, the problem of sewage contamination was largely resolved when the city completed a major engineering feat. It reversed the flow of the Chicago River so that the water flowed away from Lake Michigan rather than into it. This project began with the construction and improvement of the Illinois and Michigan Canal, and was completed with the Chicago Sanitary and Ship Canal that connects to the Illinois River, which flows into the Mississippi River.", "title": "History" }, { "paragraph_id": 17, "text": "In 1871, the Great Chicago Fire destroyed an area about 4 miles (6.4 km) long and 1-mile (1.6 km) wide, a large section of the city at the time. Much of the city, including railroads and stockyards, survived intact, and from the ruins of the previous wooden structures arose more modern constructions of steel and stone. These set a precedent for worldwide construction. During its rebuilding period, Chicago constructed the world's first skyscraper in 1885, using steel-skeleton construction.", "title": "History" }, { "paragraph_id": 18, "text": "The city grew significantly in size and population by incorporating many neighboring townships between 1851 and 1920, with the largest annexation happening in 1889, with five townships joining the city, including the Hyde Park Township, which now comprises most of the South Side of Chicago and the far southeast of Chicago, and the Jefferson Township, which now makes up most of Chicago's Northwest Side. The desire to join the city was driven by municipal services that the city could provide its residents.", "title": "History" }, { "paragraph_id": 19, "text": "Chicago's flourishing economy attracted huge numbers of new immigrants from Europe and migrants from the Eastern United States. Of the total population in 1900, more than 77% were either foreign-born or born in the United States of foreign parentage. Germans, Irish, Poles, Swedes, and Czechs made up nearly two-thirds of the foreign-born population (by 1900, whites were 98.1% of the city's population).", "title": "History" }, { "paragraph_id": 20, "text": "Labor conflicts followed the industrial boom and the rapid expansion of the labor pool, including the Haymarket affair on May 4, 1886, and in 1894 the Pullman Strike. Anarchist and socialist groups played prominent roles in creating very large and highly organized labor actions. Concern for social problems among Chicago's immigrant poor led Jane Addams and Ellen Gates Starr to found Hull House in 1889. Programs that were developed there became a model for the new field of social work.", "title": "History" }, { "paragraph_id": 21, "text": "During the 1870s and 1880s, Chicago attained national stature as the leader in the movement to improve public health. City laws and later, state laws that upgraded standards for the medical profession and fought urban epidemics of cholera, smallpox, and yellow fever were both passed and enforced. These laws became templates for public health reform in other cities and states.", "title": "History" }, { "paragraph_id": 22, "text": "The city established many large, well-landscaped municipal parks, which also included public sanitation facilities. The chief advocate for improving public health in Chicago was John H. Rauch, M.D. Rauch established a plan for Chicago's park system in 1866. He created Lincoln Park by closing a cemetery filled with shallow graves, and in 1867, in response to an outbreak of cholera he helped establish a new Chicago Board of Health. Ten years later, he became the secretary and then the president of the first Illinois State Board of Health, which carried out most of its activities in Chicago.", "title": "History" }, { "paragraph_id": 23, "text": "In the 1800s, Chicago became the nation's railroad hub, and by 1910 over 20 railroads operated passenger service out of six different downtown terminals. In 1883, Chicago's railway managers needed a general time convention, so they developed the standardized system of North American time zones. This system for telling time spread throughout the continent.", "title": "History" }, { "paragraph_id": 24, "text": "In 1893, Chicago hosted the World's Columbian Exposition on former marshland at the present location of Jackson Park. The Exposition drew 27.5 million visitors, and is considered the most influential world's fair in history. The University of Chicago, formerly at another location, moved to the same South Side location in 1892. The term \"midway\" for a fair or carnival referred originally to the Midway Plaisance, a strip of park land that still runs through the University of Chicago campus and connects the Washington and Jackson Parks.", "title": "History" }, { "paragraph_id": 25, "text": "During World War I and the 1920s there was a major expansion in industry. The availability of jobs attracted African Americans from the Southern United States. Between 1910 and 1930, the African American population of Chicago increased dramatically, from 44,103 to 233,903. This Great Migration had an immense cultural impact, called the Chicago Black Renaissance, part of the New Negro Movement, in art, literature, and music. Continuing racial tensions and violence, such as the Chicago race riot of 1919, also occurred.", "title": "History" }, { "paragraph_id": 26, "text": "The ratification of the 18th amendment to the Constitution in 1919 made the production and sale (including exportation) of alcoholic beverages illegal in the United States. This ushered in the beginning of what is known as the gangster era, a time that roughly spans from 1919 until 1933 when Prohibition was repealed. The 1920s saw gangsters, including Al Capone, Dion O'Banion, Bugs Moran and Tony Accardo battle law enforcement and each other on the streets of Chicago during the Prohibition era. Chicago was the location of the infamous St. Valentine's Day Massacre in 1929, when Al Capone sent men to gun down members of a rival gang, North Side, led by Bugs Moran.", "title": "History" }, { "paragraph_id": 27, "text": "Chicago was the first American city to have a homosexual-rights organization. The organization, formed in 1924, was called the Society for Human Rights. It produced the first American publication for homosexuals, Friendship and Freedom. Police and political pressure caused the organization to disband.", "title": "History" }, { "paragraph_id": 28, "text": "The Great Depression brought unprecedented suffering to Chicago, in no small part due to the city's heavy reliance on heavy industry. Notably, industrial areas on the south side and neighborhoods lining both branches of the Chicago River were devastated; by 1933 over 50% of industrial jobs in the city had been lost, and unemployment rates amongst blacks and Mexicans in the city were over 40%. The Republican political machine in Chicago was utterly destroyed by the economic crisis, and every mayor since 1931 has been a Democrat.", "title": "History" }, { "paragraph_id": 29, "text": "From 1928 to 1933, the city witnessed a tax revolt, and the city was unable to meet payroll or provide relief efforts. The fiscal crisis was resolved by 1933, and at the same time, federal relief funding began to flow into Chicago. Chicago was also a hotbed of labor activism, with Unemployed Councils contributing heavily in the early depression to create solidarity for the poor and demand relief, these organizations were created by socialist and communist groups. By 1935 the Workers Alliance of America begun organizing the poor, workers, the unemployed. In the spring of 1937 Republic Steel Works witnessed the Memorial Day massacre of 1937 in the neighborhood of East Side.", "title": "History" }, { "paragraph_id": 30, "text": "In 1933, Chicago Mayor Anton Cermak was fatally wounded in Miami, Florida, during a failed assassination attempt on President-elect Franklin D. Roosevelt. In 1933 and 1934, the city celebrated its centennial by hosting the Century of Progress International Exposition World's Fair. The theme of the fair was technological innovation over the century since Chicago's founding.", "title": "History" }, { "paragraph_id": 31, "text": "During World War II, the city of Chicago alone produced more steel than the United Kingdom every year from 1939 – 1945, and more than Nazi Germany from 1943 – 1945.", "title": "History" }, { "paragraph_id": 32, "text": "The Great Migration, which had been on pause due to the Depression, resumed at an even faster pace in the second wave, as hundreds of thousands of blacks from the South arrived in the city to work in the steel mills, railroads, and shipping yards.", "title": "History" }, { "paragraph_id": 33, "text": "On December 2, 1942, physicist Enrico Fermi conducted the world's first controlled nuclear reaction at the University of Chicago as part of the top-secret Manhattan Project. This led to the creation of the atomic bomb by the United States, which it used in World War II in 1945.", "title": "History" }, { "paragraph_id": 34, "text": "Mayor Richard J. Daley, a Democrat, was elected in 1955, in the era of machine politics. In 1956, the city conducted its last major expansion when it annexed the land under O'Hare airport, including a small portion of DuPage County.", "title": "History" }, { "paragraph_id": 35, "text": "By the 1960s, white residents in several neighborhoods left the city for the suburban areas – in many American cities, a process known as white flight – as Blacks continued to move beyond the Black Belt. While home loan discriminatory redlining against blacks continued, the real estate industry practiced what became known as blockbusting, completely changing the racial composition of whole neighborhoods. Structural changes in industry, such as globalization and job outsourcing, caused heavy job losses for lower-skilled workers. At its peak during the 1960s, some 250,000 workers were employed in the steel industry in Chicago, but the steel crisis of the 1970s and 1980s reduced this number to just 28,000 in 2015. In 1966, Martin Luther King Jr. and Albert Raby led the Chicago Freedom Movement, which culminated in agreements between Mayor Richard J. Daley and the movement leaders.", "title": "History" }, { "paragraph_id": 36, "text": "Two years later, the city hosted the tumultuous 1968 Democratic National Convention, which featured physical confrontations both inside and outside the convention hall, with anti-war protesters, journalists and bystanders being beaten by police. Major construction projects, including the Sears Tower (now known as the Willis Tower, which in 1974 became the world's tallest building), University of Illinois at Chicago, McCormick Place, and O'Hare International Airport, were undertaken during Richard J. Daley's tenure. In 1979, Jane Byrne, the city's first female mayor, was elected. She was notable for temporarily moving into the crime-ridden Cabrini-Green housing project and for leading Chicago's school system out of a financial crisis.", "title": "History" }, { "paragraph_id": 37, "text": "In 1983, Harold Washington became the first black mayor of Chicago. Washington's first term in office directed attention to poor and previously neglected minority neighborhoods. He was re‑elected in 1987 but died of a heart attack soon after. Washington was succeeded by 6th ward alderperson Eugene Sawyer, who was elected by the Chicago City Council and served until a special election.", "title": "History" }, { "paragraph_id": 38, "text": "Richard M. Daley, son of Richard J. Daley, was elected in 1989. His accomplishments included improvements to parks and creating incentives for sustainable development, as well as closing Meigs Field in the middle of the night and destroying the runways. After successfully running for re-election five times, and becoming Chicago's longest-serving mayor, Richard M. Daley declined to run for a seventh term.", "title": "History" }, { "paragraph_id": 39, "text": "In 1992, a construction accident near the Kinzie Street Bridge produced a breach connecting the Chicago River to a tunnel below, which was part of an abandoned freight tunnel system extending throughout the downtown Loop district. The tunnels filled with 250 million US gallons (1,000,000 m) of water, affecting buildings throughout the district and forcing a shutdown of electrical power. The area was shut down for three days and some buildings did not reopen for weeks; losses were estimated at $1.95 billion.", "title": "History" }, { "paragraph_id": 40, "text": "On February 23, 2011, Rahm Emanuel, a former White House Chief of Staff and member of the House of Representatives, won the mayoral election. Emanuel was sworn in as mayor on May 16, 2011, and won re-election in 2015. Lori Lightfoot, the city's first African American woman mayor and its first openly LGBTQ mayor, was elected to succeed Emanuel as mayor in 2019. All three city-wide elective offices were held by women (and women of color) for the first time in Chicago history: in addition to Lightfoot, the city clerk was Anna Valencia and the city treasurer was Melissa Conyears-Ervin.", "title": "History" }, { "paragraph_id": 41, "text": "On May 15, 2023, Brandon Johnson assumed office as the 57th mayor of Chicago.", "title": "History" }, { "paragraph_id": 42, "text": "Chicago is located in northeastern Illinois on the southwestern shores of freshwater Lake Michigan. It is the principal city in the Chicago metropolitan area, situated in both the Midwestern United States and the Great Lakes region. The city rests on a continental divide at the site of the Chicago Portage, connecting the Mississippi River and the Great Lakes watersheds. In addition to it lying beside Lake Michigan, two rivers—the Chicago River in downtown and the Calumet River in the industrial far South Side—flow either entirely or partially through the city.", "title": "Geography" }, { "paragraph_id": 43, "text": "Chicago's history and economy are closely tied to its proximity to Lake Michigan. While the Chicago River historically handled much of the region's waterborne cargo, today's huge lake freighters use the city's Lake Calumet Harbor on the South Side. The lake also provides another positive effect: moderating Chicago's climate, making waterfront neighborhoods slightly warmer in winter and cooler in summer.", "title": "Geography" }, { "paragraph_id": 44, "text": "When Chicago was founded in 1837, most of the early building was around the mouth of the Chicago River, as can be seen on a map of the city's original 58 blocks. The overall grade of the city's central, built-up areas is relatively consistent with the natural flatness of its overall natural geography, generally exhibiting only slight differentiation otherwise. The average land elevation is 579 ft (176.5 m) above sea level. While measurements vary somewhat, the lowest points are along the lake shore at 578 ft (176.2 m), while the highest point, at 672 ft (205 m), is the morainal ridge of Blue Island in the city's far south side.", "title": "Geography" }, { "paragraph_id": 45, "text": "Lake Shore Drive runs adjacent to a large portion of Chicago's waterfront. Some of the parks along the waterfront include Lincoln Park, Grant Park, Burnham Park, and Jackson Park. There are 24 public beaches across 26 miles (42 km) of the waterfront. Landfill extends into portions of the lake providing space for Navy Pier, Northerly Island, the Museum Campus, and large portions of the McCormick Place Convention Center. Most of the city's high-rise commercial and residential buildings are close to the waterfront.", "title": "Geography" }, { "paragraph_id": 46, "text": "An informal name for the entire Chicago metropolitan area is \"Chicagoland\", which generally means the city and all its suburbs, though different organizations have slightly different definitions.", "title": "Geography" }, { "paragraph_id": 47, "text": "Major sections of the city include the central business district, called The Loop, and the North, South, and West Sides. The three sides of the city are represented on the Flag of Chicago by three horizontal white stripes. The North Side is the most-densely-populated residential section of the city, and many high-rises are located on this side of the city along the lakefront. The South Side is the largest section of the city, encompassing roughly 60% of the city's land area. The South Side contains most of the facilities of the Port of Chicago.", "title": "Geography" }, { "paragraph_id": 48, "text": "In the late-1920s, sociologists at the University of Chicago subdivided the city into 77 distinct community areas, which can further be subdivided into over 200 informally defined neighborhoods.", "title": "Geography" }, { "paragraph_id": 49, "text": "Chicago's streets were laid out in a street grid that grew from the city's original townsite plot, which was bounded by Lake Michigan on the east, North Avenue on the north, Wood Street on the west, and 22nd Street on the south. Streets following the Public Land Survey System section lines later became arterial streets in outlying sections. As new additions to the city were platted, city ordinance required them to be laid out with eight streets to the mile in one direction and sixteen in the other direction, about one street per 200 meters in one direction and one street per 100 meters in the other direction. The grid's regularity provided an efficient means of developing new real estate property. A scattering of diagonal streets, many of them originally Native American trails, also cross the city (Elston, Milwaukee, Ogden, Lincoln, etc.). Many additional diagonal streets were recommended in the Plan of Chicago, but only the extension of Ogden Avenue was ever constructed.", "title": "Geography" }, { "paragraph_id": 50, "text": "In 2016, Chicago was ranked the sixth-most walkable large city in the United States. Many of the city's residential streets have a wide patch of grass or trees between the street and the sidewalk itself. This helps to keep pedestrians on the sidewalk further away from the street traffic. Chicago's Western Avenue is the longest continuous urban street in the world. Other notable streets include Michigan Avenue, State Street, 95th Street, Cicero Avenue, Clark Street, and Belmont Avenue. The City Beautiful movement inspired Chicago's boulevards and parkways.", "title": "Geography" }, { "paragraph_id": 51, "text": "The destruction caused by the Great Chicago Fire led to the largest building boom in the history of the nation. In 1885, the first steel-framed high-rise building, the Home Insurance Building, rose in the city as Chicago ushered in the skyscraper era, which would then be followed by many other cities around the world. Today, Chicago's skyline is among the world's tallest and densest.", "title": "Geography" }, { "paragraph_id": 52, "text": "Some of the United States' tallest towers are located in Chicago; Willis Tower (formerly Sears Tower) is the second tallest building in the Western Hemisphere after One World Trade Center, and Trump International Hotel and Tower is the third tallest in the country. The Loop's historic buildings include the Chicago Board of Trade Building, the Fine Arts Building, 35 East Wacker, and the Chicago Building, 860-880 Lake Shore Drive Apartments by Mies van der Rohe. Many other architects have left their impression on the Chicago skyline such as Daniel Burnham, Louis Sullivan, Charles B. Atwood, John Root, and Helmut Jahn.", "title": "Geography" }, { "paragraph_id": 53, "text": "The Merchandise Mart, once first on the list of largest buildings in the world, currently listed as 44th-largest (as of 9 September 2013), had its own zip code until 2008, and stands near the junction of the North and South branches of the Chicago River. Presently, the four tallest buildings in the city are Willis Tower (formerly the Sears Tower, also a building with its own zip code), Trump International Hotel and Tower, the Aon Center (previously the Standard Oil Building), and the John Hancock Center. Industrial districts, such as some areas on the South Side, the areas along the Chicago Sanitary and Ship Canal, and the Northwest Indiana area are clustered.", "title": "Geography" }, { "paragraph_id": 54, "text": "Chicago gave its name to the Chicago School and was home to the Prairie School, two movements in architecture. Multiple kinds and scales of houses, townhouses, condominiums, and apartment buildings can be found throughout Chicago. Large swaths of the city's residential areas away from the lake are characterized by brick bungalows built from the early 20th century through the end of World War II. Chicago is also a prominent center of the Polish Cathedral style of church architecture. The Chicago suburb of Oak Park was home to famous architect Frank Lloyd Wright, who had designed The Robie House located near the University of Chicago.", "title": "Geography" }, { "paragraph_id": 55, "text": "A popular tourist activity is to take an architecture boat tour along the Chicago River.", "title": "Geography" }, { "paragraph_id": 56, "text": "Chicago is famous for its outdoor public art with donors establishing funding for such art as far back as Benjamin Ferguson's 1905 trust. A number of Chicago's public art works are by modern figurative artists. Among these are Chagall's Four Seasons; the Chicago Picasso; Miro's Chicago; Calder's Flamingo; Oldenburg's Batcolumn; Moore's Large Interior Form, 1953-54, Man Enters the Cosmos and Nuclear Energy; Dubuffet's Monument with Standing Beast, Abakanowicz's Agora; and, Anish Kapoor's Cloud Gate which has become an icon of the city. Some events which shaped the city's history have also been memorialized by art works, including the Great Northern Migration (Saar) and the centennial of statehood for Illinois. Finally, two fountains near the Loop also function as monumental works of art: Plensa's Crown Fountain as well as Burnham and Bennett's Buckingham Fountain.", "title": "Geography" }, { "paragraph_id": 57, "text": "The city lies within the typical hot-summer humid continental climate (Köppen: Dfa), and experiences four distinct seasons. Summers are hot and humid, with frequent heat waves. The July daily average temperature is 75.4 °F (24.1 °C), with afternoon temperatures peaking at 84.5 °F (29.2 °C). In a normal summer, temperatures reach at least 90 °F (32 °C) on 17 days, with lakefront locations staying cooler when winds blow off the lake. Winters are relatively cold and snowy. Blizzards do occur, such as in winter 2011. There are many sunny but cold days. The normal winter high from December through March is about 36 °F (2 °C). January and February are the coldest months. A polar vortex in January 2019 nearly broke the city's cold record of −27 °F (−33 °C), which was set on January 20, 1985. Measurable snowfall can continue through the first or second week of April.", "title": "Geography" }, { "paragraph_id": 58, "text": "Spring and autumn are mild, short seasons, typically with low humidity. Dew point temperatures in the summer range from an average of 55.8 °F (13.2 °C) in June to 61.7 °F (16.5 °C) in July. They can reach nearly 80 °F (27 °C), such as during the July 2019 heat wave. The city lies within USDA plant hardiness zone 6a, transitioning to 5b in the suburbs.", "title": "Geography" }, { "paragraph_id": 59, "text": "According to the National Weather Service, Chicago's highest official temperature reading of 105 °F (41 °C) was recorded on July 24, 1934. Midway Airport reached 109 °F (43 °C) one day prior and recorded a heat index of 125 °F (52 °C) during the 1995 heatwave. The lowest official temperature of −27 °F (−33 °C) was recorded on January 20, 1985, at O'Hare Airport. Most of the city's rainfall is brought by thunderstorms, averaging 38 a year. The region is prone to severe thunderstorms during the spring and summer which can produce large hail, damaging winds, and occasionally tornadoes.", "title": "Geography" }, { "paragraph_id": 60, "text": "Like other major cities, Chicago experiences an urban heat island, making the city and its suburbs milder than surrounding rural areas, especially at night and in winter. The proximity to Lake Michigan tends to keep the Chicago lakefront somewhat cooler in summer and less brutally cold in winter than inland parts of the city and suburbs away from the lake. Northeast winds from wintertime cyclones departing south of the region sometimes bring the city lake-effect snow.", "title": "Geography" }, { "paragraph_id": 61, "text": "As in the rest of the state of Illinois, Chicago forms part of the Central Time Zone. The border with the Eastern Time Zone is located a short distance to the east, used in Michigan and certain parts of Indiana.", "title": "Geography" }, { "paragraph_id": 62, "text": "During its first hundred years, Chicago was one of the fastest-growing cities in the world. When founded in 1833, fewer than 200 people had settled on what was then the American frontier. By the time of its first census, seven years later, the population had reached over 4,000. In the forty years from 1850 to 1890, the city's population grew from slightly under 30,000 to over 1 million. At the end of the 19th century, Chicago was the fifth-largest city in the world, and the largest of the cities that did not exist at the dawn of the century. Within sixty years of the Great Chicago Fire of 1871, the population went from about 300,000 to over 3 million, and reached its highest ever recorded population of 3.6 million for the 1950 census.", "title": "Demographics" }, { "paragraph_id": 63, "text": "From the last two decades of the 19th century, Chicago was the destination of waves of immigrants from Ireland, Southern, Central and Eastern Europe, including Italians, Jews, Russians, Poles, Greeks, Lithuanians, Bulgarians, Albanians, Romanians, Turkish, Croatians, Serbs, Bosnians, Montenegrins and Czechs. To these ethnic groups, the basis of the city's industrial working class, were added an additional influx of African Americans from the American South—with Chicago's black population doubling between 1910 and 1920 and doubling again between 1920 and 1930. Chicago has a significant Bosnian population, many of whom arrived in the 1990s and 2000s.", "title": "Demographics" }, { "paragraph_id": 64, "text": "In the 1920s and 1930s, the great majority of African Americans moving to Chicago settled in a so‑called \"Black Belt\" on the city's South Side. A large number of blacks also settled on the West Side. By 1930, two-thirds of Chicago's black population lived in sections of the city which were 90% black in racial composition. Around that time, a lesser known fact about African Americans on the North Side is that the block of 4600 Winthrop Avenue in Uptown was the only block African Americans could live or open establishments. Chicago's South Side emerged as United States second-largest urban black concentration, following New York's Harlem. In 1990, Chicago's South Side and the adjoining south suburbs constituted the largest black majority region in the entire United States.", "title": "Demographics" }, { "paragraph_id": 65, "text": "Most of Chicago's foreign-born population were born in Mexico, Poland and India.", "title": "Demographics" }, { "paragraph_id": 66, "text": "Chicago's population declined in the latter half of the 20th century, from over 3.6 million in 1950 down to under 2.7 million by 2010. By the time of the official census count in 1990, it was overtaken by Los Angeles as the United States' second largest city.", "title": "Demographics" }, { "paragraph_id": 67, "text": "The city has seen a rise in population for the 2000 census and after a decrease in 2010, it rose again for the 2020 census.", "title": "Demographics" }, { "paragraph_id": 68, "text": "According to U.S. census estimates as of July 2019, Chicago's largest racial or ethnic group is non-Hispanic White at 32.8% of the population, Blacks at 30.1% and the Hispanic population at 29.0% of the population.", "title": "Demographics" }, { "paragraph_id": 69, "text": "Chicago has the third-largest LGBT population in the United States. In 2018, the Chicago Department of Health, estimated 7.5% of the adult population, approximately 146,000 Chicagoans, were LGBTQ. In 2015, roughly 4% of the population identified as LGBT. Since the 2013 legalization of same-sex marriage in Illinois, over 10,000 same-sex couples have wed in Cook County, a majority of them in Chicago.", "title": "Demographics" }, { "paragraph_id": 70, "text": "Chicago became a \"de jure\" sanctuary city in 2012 when Mayor Rahm Emanuel and the City Council passed the Welcoming City Ordinance.", "title": "Demographics" }, { "paragraph_id": 71, "text": "According to the U.S. Census Bureau's American Community Survey data estimates for 2008–2012, the median income for a household in the city was $47,408, and the median income for a family was $54,188. Male full-time workers had a median income of $47,074 versus $42,063 for females. About 18.3% of families and 22.1% of the population lived below the poverty line. In 2018, Chicago ranked seventh globally for the highest number of ultra-high-net-worth residents with roughly 3,300 residents worth more than $30 million.", "title": "Demographics" }, { "paragraph_id": 72, "text": "According to the 2008–2012 American Community Survey, the ancestral groups having 10,000 or more persons in Chicago were:", "title": "Demographics" }, { "paragraph_id": 73, "text": "Persons identifying themselves in \"Other groups\" were classified at 1.72 million, and unclassified or not reported were approximately 153,000.", "title": "Demographics" }, { "paragraph_id": 74, "text": "Religion in Chicago (2014)", "title": "Demographics" }, { "paragraph_id": 75, "text": "According to a 2014 study by the Pew Research Center, Christianity is the most prevalently practiced religion in Chicago (71%), with the city being the fourth-most religious metropolis in the United States after Dallas, Atlanta and Houston. Roman Catholicism and Protestantism are the largest branches (34% and 35% respectively), followed by Eastern Orthodoxy and Jehovah's Witnesses with 1% each. Chicago also has a sizable non-Christian population. Non-Christian groups include Irreligious (22%), Judaism (3%), Islam (2%), Buddhism (1%) and Hinduism (1%).", "title": "Demographics" }, { "paragraph_id": 76, "text": "Chicago is the headquarters of several religious denominations, including the Evangelical Covenant Church and the Evangelical Lutheran Church in America. It is the seat of several dioceses. The Fourth Presbyterian Church is one of the largest Presbyterian congregations in the United States based on memberships. Since the 20th century Chicago has also been the headquarters of the Assyrian Church of the East. In 2014 the Catholic Church was the largest individual Christian denomination (34%), with the Roman Catholic Archdiocese of Chicago being the largest Catholic jurisdiction. Evangelical Protestantism form the largest theological Protestant branch (16%), followed by Mainline Protestants (11%), and historically Black churches (8%). Among denominational Protestant branches, Baptists formed the largest group in Chicago (10%); followed by Nondenominational (5%); Lutherans (4%); and Pentecostals (3%).", "title": "Demographics" }, { "paragraph_id": 77, "text": "Non-Christian faiths accounted for 7% of the religious population in 2014. Judaism has at least 261,000 adherents which is 3% of the population, making it the second largest religion. A 2020 study estimated the total Jewish population of the Chicago metropolitan area, both religious and irreligious, at 319,600.", "title": "Demographics" }, { "paragraph_id": 78, "text": "The first two Parliament of the World's Religions in 1893 and 1993 were held in Chicago. Many international religious leaders have visited Chicago, including Mother Teresa, the Dalai Lama and Pope John Paul II in 1979.", "title": "Demographics" }, { "paragraph_id": 79, "text": "Chicago has the third-largest gross metropolitan product in the United States—about $670.5 billion according to September 2017 estimates. The city has also been rated as having the most balanced economy in the United States, due to its high level of diversification. The Chicago metropolitan area has the third-largest science and engineering work force of any metropolitan area in the nation. Chicago was the base of commercial operations for industrialists John Crerar, John Whitfield Bunn, Richard Teller Crane, Marshall Field, John Farwell, Julius Rosenwald, and many other commercial visionaries who laid the foundation for Midwestern and global industry.", "title": "Economy" }, { "paragraph_id": 80, "text": "Chicago is a major world financial center, with the second-largest central business district in the United States, following Midtown Manhattan. The city is the seat of the Federal Reserve Bank of Chicago, the Bank's Seventh District. The city has major financial and futures exchanges, including the Chicago Stock Exchange, the Chicago Board Options Exchange (CBOE), and the Chicago Mercantile Exchange (the \"Merc\"), which is owned, along with the Chicago Board of Trade (CBOT), by Chicago's CME Group. In 2017, Chicago exchanges traded 4.7 billion derivatives with a face value of over one quadrillion dollars. Chase Bank has its commercial and retail banking headquarters in Chicago's Chase Tower. Academically, Chicago has been influential through the Chicago school of economics, which fielded 12 Nobel Prize winners.", "title": "Economy" }, { "paragraph_id": 81, "text": "The city and its surrounding metropolitan area contain the third-largest labor pool in the United States with about 4.63 million workers. Illinois is home to 66 Fortune 1000 companies, including those in Chicago. The city of Chicago also hosts 12 Fortune Global 500 companies and 17 Financial Times 500 companies. The city claims three Dow 30 companies: aerospace giant Boeing, which moved its headquarters from Seattle to the Chicago Loop in 2001; McDonald's; and Walgreens Boots Alliance. For six consecutive years from 2013 through 2018, Chicago was ranked the nation's top metropolitan area for corporate relocations. However, three Fortune 500 companies left Chicago in 2022, leaving the city with 35, still second to New York City.", "title": "Economy" }, { "paragraph_id": 82, "text": "Manufacturing, printing, publishing, and food processing also play major roles in the city's economy. Several medical products and services companies are headquartered in the Chicago area, including Baxter International, Boeing, Abbott Laboratories, and the Healthcare division of General Electric. Prominent food companies based in Chicago include the world headquarters of Conagra, Ferrara Candy Company, Kraft Heinz, McDonald's, Mondelez International, and Quaker Oats. Chicago has been a hub of the retail sector since its early development, with Montgomery Ward, Sears, and Marshall Field's. Today the Chicago metropolitan area is the headquarters of several retailers, including Walgreens, Sears, Ace Hardware, Claire's, ULTA Beauty, and Crate & Barrel.", "title": "Economy" }, { "paragraph_id": 83, "text": "Late in the 19th century, Chicago was part of the bicycle craze, with the Western Wheel Company, which introduced stamping to the production process and significantly reduced costs, while early in the 20th century, the city was part of the automobile revolution, hosting the Brass Era car builder Bugmobile, which was founded there in 1907. Chicago was also the site of the Schwinn Bicycle Company.", "title": "Economy" }, { "paragraph_id": 84, "text": "Chicago is a major world convention destination. The city's main convention center is McCormick Place. With its four interconnected buildings, it is the largest convention center in the nation and third-largest in the world. Chicago also ranks third in the U.S. (behind Las Vegas and Orlando) in number of conventions hosted annually.", "title": "Economy" }, { "paragraph_id": 85, "text": "Chicago's minimum wage for non-tipped employees is one of the highest in the nation and reached $15 in 2021.", "title": "Economy" }, { "paragraph_id": 86, "text": "The city's waterfront location and nightlife has attracted residents and tourists alike. Over a third of the city population is concentrated in the lakefront neighborhoods from Rogers Park in the north to South Shore in the south. The city has many upscale dining establishments as well as many ethnic restaurant districts. These districts include the Mexican American neighborhoods, such as Pilsen along 18th street, and La Villita along 26th Street; the Puerto Rican enclave of Paseo Boricua in the Humboldt Park neighborhood; Greektown, along South Halsted Street, immediately west of downtown; Little Italy, along Taylor Street; Chinatown in Armour Square; Polish Patches in West Town; Little Seoul in Albany Park around Lawrence Avenue; Little Vietnam near Broadway in Uptown; and the Desi area, along Devon Avenue in West Ridge.", "title": "Culture and contemporary life" }, { "paragraph_id": 87, "text": "Downtown is the center of Chicago's financial, cultural, governmental and commercial institutions and the site of Grant Park and many of the city's skyscrapers. Many of the city's financial institutions, such as the CBOT and the Federal Reserve Bank of Chicago, are located within a section of downtown called \"The Loop\", which is an eight-block by five-block area of city streets that is encircled by elevated rail tracks. The term \"The Loop\" is largely used by locals to refer to the entire downtown area as well. The central area includes the Near North Side, the Near South Side, and the Near West Side, as well as the Loop. These areas contribute famous skyscrapers, abundant restaurants, shopping, museums, a stadium for the Chicago Bears, convention facilities, parkland, and beaches.", "title": "Culture and contemporary life" }, { "paragraph_id": 88, "text": "Lincoln Park contains the Lincoln Park Zoo and the Lincoln Park Conservatory. The River North Gallery District features the nation's largest concentration of contemporary art galleries outside of New York City.", "title": "Culture and contemporary life" }, { "paragraph_id": 89, "text": "Lakeview is home to Boystown, the city's large LGBT nightlife and culture center. The Chicago Pride Parade, held the last Sunday in June, is one of the world's largest with over a million people in attendance. North Halsted Street is the main thoroughfare of Boystown.", "title": "Culture and contemporary life" }, { "paragraph_id": 90, "text": "The South Side neighborhood of Hyde Park is the home of former U.S. President Barack Obama. It also contains the University of Chicago, ranked one of the world's top ten universities, and the Museum of Science and Industry. The 6-mile (9.7 km) long Burnham Park stretches along the waterfront of the South Side. Two of the city's largest parks are also located on this side of the city: Jackson Park, bordering the waterfront, hosted the World's Columbian Exposition in 1893, and is the site of the aforementioned museum; and slightly west sits Washington Park. The two parks themselves are connected by a wide strip of parkland called the Midway Plaisance, running adjacent to the University of Chicago. The South Side hosts one of the city's largest parades, the annual African American Bud Billiken Parade and Picnic, which travels through Bronzeville to Washington Park. Ford Motor Company has an automobile assembly plant on the South Side in Hegewisch, and most of the facilities of the Port of Chicago are also on the South Side.", "title": "Culture and contemporary life" }, { "paragraph_id": 91, "text": "The West Side holds the Garfield Park Conservatory, one of the largest collections of tropical plants in any U.S. city. Prominent Latino cultural attractions found here include Humboldt Park's Institute of Puerto Rican Arts and Culture and the annual Puerto Rican People's Parade, as well as the National Museum of Mexican Art and St. Adalbert's Church in Pilsen. The Near West Side holds the University of Illinois at Chicago and was once home to Oprah Winfrey's Harpo Studios, the site of which has been rebuilt as the global headquarters of McDonald's.", "title": "Culture and contemporary life" }, { "paragraph_id": 92, "text": "The city's distinctive accent, made famous by its use in classic films like The Blues Brothers and television programs like the Saturday Night Live skit \"Bill Swerski's Superfans\", is an advanced form of Inland Northern American English. This dialect can also be found in other cities bordering the Great Lakes such as Cleveland, Milwaukee, Detroit, and Rochester, New York, and most prominently features a rearrangement of certain vowel sounds, such as the short 'a' sound as in \"cat\", which can sound more like \"kyet\" to outsiders. The accent remains well associated with the city.", "title": "Culture and contemporary life" }, { "paragraph_id": 93, "text": "Renowned Chicago theater companies include the Goodman Theatre in the Loop; the Steppenwolf Theatre Company and Victory Gardens Theater in Lincoln Park; and the Chicago Shakespeare Theater at Navy Pier. Broadway In Chicago offers Broadway-style entertainment at five theaters: the Nederlander Theatre, CIBC Theatre, Cadillac Palace Theatre, Auditorium Building of Roosevelt University, and Broadway Playhouse at Water Tower Place. Polish language productions for Chicago's large Polish speaking population can be seen at the historic Gateway Theatre in Jefferson Park. Since 1968, the Joseph Jefferson Awards are given annually to acknowledge excellence in theater in the Chicago area. Chicago's theater community spawned modern improvisational theater, and includes the prominent groups The Second City and I.O. (formerly ImprovOlympic).", "title": "Culture and contemporary life" }, { "paragraph_id": 94, "text": "The Chicago Symphony Orchestra (CSO) performs at Symphony Center, and is recognized as one of the best orchestras in the world. Also performing regularly at Symphony Center is the Chicago Sinfonietta, a more diverse and multicultural counterpart to the CSO. In the summer, many outdoor concerts are given in Grant Park and Millennium Park. Ravinia Festival, located 25 miles (40 km) north of Chicago, is the summer home of the CSO, and is a favorite destination for many Chicagoans. The Civic Opera House is home to the Lyric Opera of Chicago. The Lithuanian Opera Company of Chicago was founded by Lithuanian Chicagoans in 1956, and presents operas in Lithuanian.", "title": "Culture and contemporary life" }, { "paragraph_id": 95, "text": "The Joffrey Ballet and Chicago Festival Ballet perform in various venues, including the Harris Theater in Millennium Park. Chicago has several other contemporary and jazz dance troupes, such as the Hubbard Street Dance Chicago and Chicago Dance Crash.", "title": "Culture and contemporary life" }, { "paragraph_id": 96, "text": "Other live-music genre which are part of the city's cultural heritage include Chicago blues, Chicago soul, jazz, and gospel. The city is the birthplace of house music (a popular form of electronic dance music) and industrial music, and is the site of an influential hip hop scene. In the 1980s and 90s, the city was the global center for house and industrial music, two forms of music created in Chicago, as well as being popular for alternative rock, punk, and new wave. The city has been a center for rave culture, since the 1980s. A flourishing independent rock music culture brought forth Chicago indie. Annual festivals feature various acts, such as Lollapalooza and the Pitchfork Music Festival. Lollapalooza originated in Chicago in 1991 and at first travelled to many cities, but as of 2005 its home has been Chicago. A 2007 report on the Chicago music industry by the University of Chicago Cultural Policy Center ranked Chicago third among metropolitan U.S. areas in \"size of music industry\" and fourth among all U.S. cities in \"number of concerts and performances\".", "title": "Culture and contemporary life" }, { "paragraph_id": 97, "text": "Chicago has a distinctive fine art tradition. For much of the twentieth century, it nurtured a strong style of figurative surrealism, as in the works of Ivan Albright and Ed Paschke. In 1968 and 1969, members of the Chicago Imagists, such as Roger Brown, Leon Golub, Robert Lostutter, Jim Nutt, and Barbara Rossi produced bizarre representational paintings. Henry Darger is one of the most celebrated figures of outsider art.", "title": "Culture and contemporary life" }, { "paragraph_id": 98, "text": "In 2014, Chicago attracted 50.17 million domestic leisure travelers, 11.09 million domestic business travelers and 1.308 million overseas visitors. These visitors contributed more than US$13.7 billion to Chicago's economy. Upscale shopping along the Magnificent Mile and State Street, thousands of restaurants, as well as Chicago's eminent architecture, continue to draw tourists. The city is the United States' third-largest convention destination. A 2017 study by Walk Score ranked Chicago the sixth-most walkable of fifty largest cities in the United States. Most conventions are held at McCormick Place, just south of Soldier Field. Navy Pier, located just east of Streeterville, is 3,000 ft (910 m) long and houses retail stores, restaurants, museums, exhibition halls and auditoriums. Chicago was the first city in the world to ever erect a ferris wheel. The Willis Tower (formerly named Sears Tower) is a popular destination for tourists.", "title": "Culture and contemporary life" }, { "paragraph_id": 99, "text": "Among the city's museums are the Adler Planetarium & Astronomy Museum, the Field Museum of Natural History, and the Shedd Aquarium. The Museum Campus joins the southern section of Grant Park, which includes the renowned Art Institute of Chicago. Buckingham Fountain anchors the downtown park along the lakefront. The University of Chicago's Institute for the Study of Ancient Cultures, West Asia & North Africa has an extensive collection of ancient Egyptian and Near Eastern archaeological artifacts. Other museums and galleries in Chicago include the Chicago History Museum, the Driehaus Museum, the DuSable Museum of African American History, the Museum of Contemporary Art, the Peggy Notebaert Nature Museum, the Polish Museum of America, the Museum of Broadcast Communications, the Pritzker Military Library, the Chicago Architecture Foundation, and the Museum of Science and Industry.", "title": "Culture and contemporary life" }, { "paragraph_id": 100, "text": "Chicago lays claim to a large number of regional specialties that reflect the city's ethnic and working-class roots. Included among these are its nationally renowned deep-dish pizza; this style is said to have originated at Pizzeria Uno. The Chicago-style thin crust is also popular in the city. Certain Chicago pizza favorites include Lou Malnati's and Giordano's.", "title": "Culture and contemporary life" }, { "paragraph_id": 101, "text": "The Chicago-style hot dog, typically an all-beef hot dog, is loaded with an array of toppings that often includes pickle relish, yellow mustard, pickled sport peppers, tomato wedges, dill pickle spear and topped off with celery salt on a poppy seed bun. Enthusiasts of the Chicago-style hot dog frown upon the use of ketchup as a garnish, but may prefer to add giardiniera.", "title": "Culture and contemporary life" }, { "paragraph_id": 102, "text": "A distinctly Chicago sandwich, the Italian beef sandwich is thinly sliced beef simmered in au jus and served on an Italian roll with sweet peppers or spicy giardiniera. A popular modification is the Combo—an Italian beef sandwich with the addition of an Italian sausage. The Maxwell Street Polish is a grilled or deep-fried kielbasa—on a hot dog roll, topped with grilled onions, yellow mustard, and hot sport peppers.", "title": "Culture and contemporary life" }, { "paragraph_id": 103, "text": "Chicken Vesuvio is roasted bone-in chicken cooked in oil and garlic next to garlicky oven-roasted potato wedges and a sprinkling of green peas. The Puerto Rican-influenced jibarito is a sandwich made with flattened, fried green plantains instead of bread. The mother-in-law is a tamale topped with chili and served on a hot dog bun. The tradition of serving the Greek dish saganaki while aflame has its origins in Chicago's Greek community. The appetizer, which consists of a square of fried cheese, is doused with Metaxa and flambéed table-side. Chicago-style barbecue features hardwood smoked rib tips and hot links which were traditionally cooked in an aquarium smoker, a Chicago invention. Annual festivals feature various Chicago signature dishes, such as Taste of Chicago and the Chicago Food Truck Festival.", "title": "Culture and contemporary life" }, { "paragraph_id": 104, "text": "One of the world's most decorated restaurants and a recipient of three Michelin stars, Alinea is located in Chicago. Well-known chefs who have had restaurants in Chicago include: Charlie Trotter, Rick Tramonto, Grant Achatz, and Rick Bayless. In 2003, Robb Report named Chicago the country's \"most exceptional dining destination\".", "title": "Culture and contemporary life" }, { "paragraph_id": 105, "text": "Chicago literature finds its roots in the city's tradition of lucid, direct journalism, lending to a strong tradition of social realism. In the Encyclopedia of Chicago, Northwestern University Professor Bill Savage describes Chicago fiction as prose which tries to \"capture the essence of the city, its spaces and its people\". The challenge for early writers was that Chicago was a frontier outpost that transformed into a global metropolis in the span of two generations. Narrative fiction of that time, much of it in the style of \"high-flown romance\" and \"genteel realism\", needed a new approach to describe the urban social, political, and economic conditions of Chicago. Nonetheless, Chicagoans worked hard to create a literary tradition that would stand the test of time, and create a \"city of feeling\" out of concrete, steel, vast lake, and open prairie. Much notable Chicago fiction focuses on the city itself, with social criticism keeping exultation in check.", "title": "Culture and contemporary life" }, { "paragraph_id": 106, "text": "At least three short periods in the history of Chicago have had a lasting influence on American literature. These include from the time of the Great Chicago Fire to about 1900, what became known as the Chicago Literary Renaissance in the 1910s and early 1920s, and the period of the Great Depression through the 1940s.", "title": "Culture and contemporary life" }, { "paragraph_id": 107, "text": "What would become the influential Poetry magazine was founded in 1912 by Harriet Monroe, who was working as an art critic for the Chicago Tribune. The magazine discovered such poets as Gwendolyn Brooks, James Merrill, and John Ashbery. T. S. Eliot's first professionally published poem, \"The Love Song of J. Alfred Prufrock\", was first published by Poetry. Contributors have included Ezra Pound, William Butler Yeats, William Carlos Williams, Langston Hughes, and Carl Sandburg, among others. The magazine was instrumental in launching the Imagist and Objectivist poetic movements. From the 1950s through 1970s, American poetry continued to evolve in Chicago. In the 1980s, a modern form of poetry performance began in Chicago, the poetry slam.", "title": "Culture and contemporary life" }, { "paragraph_id": 108, "text": "The city has two Major League Baseball (MLB) teams: the Chicago Cubs of the National League play in Wrigley Field on the North Side; and the Chicago White Sox of the American League play in Guaranteed Rate Field on the South Side. The two teams have faced each other in a World Series only once, in 1906.", "title": "Sports" }, { "paragraph_id": 109, "text": "The Cubs are the oldest Major League Baseball team to have never changed their city; they have played in Chicago since 1871. They had the dubious honor of having the longest championship drought in American professional sports, failing to win a World Series between 1908 and 2016. The White Sox have played on the South Side continuously since 1901. They have won three World Series titles (1906, 1917, 2005) and six American League pennants, including the first in 1901.", "title": "Sports" }, { "paragraph_id": 110, "text": "The Chicago Bears, one of the last two remaining charter members of the National Football League (NFL), have won nine NFL Championships, including the 1985 Super Bowl XX. The Bears play their home games at Soldier Field.", "title": "Sports" }, { "paragraph_id": 111, "text": "The Chicago Bulls of the National Basketball Association (NBA) is one of the most recognized basketball teams in the world. During the 1990s, with Michael Jordan leading them, the Bulls won six NBA championships in eight seasons.", "title": "Sports" }, { "paragraph_id": 112, "text": "The Chicago Blackhawks of the National Hockey League (NHL) began play in 1926, and are one of the \"Original Six\" teams of the NHL. The Blackhawks have won six Stanley Cups, including in 2010, 2013, and 2015. Both the Bulls and the Blackhawks play at the United Center.", "title": "Sports" }, { "paragraph_id": 113, "text": "Chicago Fire FC is a member of Major League Soccer (MLS) and plays at Soldier Field. The Fire have won one league title and four U.S. Open Cups, since their founding in 1997. In 1994, the United States hosted a successful FIFA World Cup with games played at Soldier Field.", "title": "Sports" }, { "paragraph_id": 114, "text": "The Chicago Red Stars are a team in the National Women's Soccer League (NWSL). They previously played in Women's Professional Soccer (WPS), of which they were a founding member, before joining the NWSL in 2013. They play at SeatGeek Stadium in Bridgeview, Illinois.", "title": "Sports" }, { "paragraph_id": 115, "text": "The Chicago Sky is a professional basketball team playing in the Women's National Basketball Association (WNBA). They play home games at the Wintrust Arena. The team was founded before the 2006 WNBA season began.", "title": "Sports" }, { "paragraph_id": 116, "text": "The Chicago Marathon has been held each year since 1977 except for 1987, when a half marathon was run in its place. The Chicago Marathon is one of six World Marathon Majors.", "title": "Sports" }, { "paragraph_id": 117, "text": "Five area colleges play in Division I conferences: two from major conferences—the DePaul Blue Demons (Big East Conference) and the Northwestern Wildcats (Big Ten Conference)—and three from other D1 conferences—the Chicago State Cougars (Western Athletic Conference); the Loyola Ramblers (Atlantic 10 Conference); and the UIC Flames (Missouri Valley Conference).", "title": "Sports" }, { "paragraph_id": 118, "text": "Chicago has also entered into esports with the creation of the Chicago Huntsmen, a professional Call of Duty team that participates within the CDL.", "title": "Sports" }, { "paragraph_id": 119, "text": "When Chicago was incorporated in 1837, it chose the motto Urbs in Horto, a Latin phrase which means \"City in a Garden\". Today, the Chicago Park District consists of more than 570 parks with over 8,000 acres (3,200 ha) of municipal parkland. There are 31 sand beaches, a plethora of museums, two world-class conservatories, and 50 nature areas. Lincoln Park, the largest of the city's parks, covers 1,200 acres (490 ha) and has over 20 million visitors each year, making it third in the number of visitors after Central Park in New York City, and the National Mall and Memorial Parks in Washington, D.C.", "title": "Parks and greenspace" }, { "paragraph_id": 120, "text": "There is a historic boulevard system, a network of wide, tree-lined boulevards which connect a number of Chicago parks. The boulevards and the parks were authorized by the Illinois legislature in 1869. A number of Chicago neighborhoods emerged along these roadways in the 19th century. The building of the boulevard system continued intermittently until 1942. It includes nineteen boulevards, eight parks, and six squares, along twenty-six miles of interconnected streets. The Chicago Park Boulevard System Historic District was listed on the National Register of Historic Places in 2018.", "title": "Parks and greenspace" }, { "paragraph_id": 121, "text": "With berths for more than 6,000 boats, the Chicago Park District operates the nation's largest municipal harbor system. In addition to ongoing beautification and renewal projects for the existing parks, a number of new parks have been added in recent years, such as the Ping Tom Memorial Park in Chinatown, DuSable Park on the Near North Side, and most notably, Millennium Park, which is in the northwestern corner of one of Chicago's oldest parks, Grant Park in the Chicago Loop.", "title": "Parks and greenspace" }, { "paragraph_id": 122, "text": "The wealth of greenspace afforded by Chicago's parks is further augmented by the Cook County Forest Preserves, a network of open spaces containing forest, prairie, wetland, streams, and lakes that are set aside as natural areas which lie along the city's outskirts, including both the Chicago Botanic Garden in Glencoe and the Brookfield Zoo in Brookfield. Washington Park is also one of the city's biggest parks; covering nearly 400 acres (160 ha). The park is listed on the National Register of Historic Places listings in South Side Chicago.", "title": "Parks and greenspace" }, { "paragraph_id": 123, "text": "The government of the City of Chicago is divided into executive and legislative branches. The mayor of Chicago is the chief executive, elected by general election for a term of four years, with no term limits. The current mayor is Brandon Johnson. The mayor appoints commissioners and other officials who oversee the various departments. As well as the mayor, Chicago's clerk and treasurer are also elected citywide. The City Council is the legislative branch and is made up of 50 alderpersons, one elected from each ward in the city. The council takes official action through the passage of ordinances and resolutions and approves the city budget.", "title": "Law and government" }, { "paragraph_id": 124, "text": "The Chicago Police Department provides law enforcement and the Chicago Fire Department provides fire suppression and emergency medical services for the city and its residents. Civil and criminal law cases are heard in the Cook County Circuit Court of the State of Illinois court system, or in the Northern District of Illinois, in the federal system. In the state court, the public prosecutor is the Illinois state's attorney; in the Federal court it is the United States attorney.", "title": "Law and government" }, { "paragraph_id": 125, "text": "During much of the last half of the 19th century, Chicago's politics were dominated by a growing Democratic Party organization. During the 1880s and 1890s, Chicago had a powerful radical tradition with large and highly organized socialist, anarchist and labor organizations. For much of the 20th century, Chicago has been among the largest and most reliable Democratic strongholds in the United States; with Chicago's Democratic vote the state of Illinois has been \"solid blue\" in presidential elections since 1992. Even before then, it was not unheard of for Republican presidential candidates to win handily in downstate Illinois, only to lose statewide due to large Democratic margins in Chicago. The citizens of Chicago have not elected a Republican mayor since 1927, when William Thompson was voted into office. The strength of the party in the city is partly a consequence of Illinois state politics, where the Republicans have come to represent rural and farm concerns while the Democrats support urban issues such as Chicago's public school funding.", "title": "Law and government" }, { "paragraph_id": 126, "text": "Chicago contains less than 25% of the state's population, but it is split between eight of Illinois' 17 districts in the United States House of Representatives. All eight of the city's representatives are Democrats; only two Republicans have represented a significant portion of the city since 1973, for one term each: Robert P. Hanrahan from 1973 to 1975, and Michael Patrick Flanagan from 1995 to 1997.", "title": "Law and government" }, { "paragraph_id": 127, "text": "Machine politics persisted in Chicago after the decline of similar machines in other large U.S. cities. During much of that time, the city administration found opposition mainly from a liberal \"independent\" faction of the Democratic Party. The independents finally gained control of city government in 1983 with the election of Harold Washington (in office 1983–1987). From 1989 until May 16, 2011, Chicago was under the leadership of its longest-serving mayor, Richard M. Daley, the son of Richard J. Daley. Because of the dominance of the Democratic Party in Chicago, the Democratic primary vote held in the spring is generally more significant than the general elections in November for U.S. House and Illinois State seats. The aldermanic, mayoral, and other city offices are filled through nonpartisan elections with runoffs as needed.", "title": "Law and government" }, { "paragraph_id": 128, "text": "The city is home of former United States President Barack Obama and First Lady Michelle Obama; Barack Obama was formerly a state legislator representing Chicago and later a U.S. senator. The Obamas' residence is located near the University of Chicago in Kenwood on the city's south side.", "title": "Law and government" }, { "paragraph_id": 129, "text": "Chicago's crime rate in 2020 was 3,926 per 100,000 people. Chicago experienced major rises in violent crime in the 1920s, in the late 1960s, and in the 2020s. Chicago's biggest criminal justice challenges have changed little over the last 50 years, and statistically reside with homicide, armed robbery, gang violence, and aggravated battery. Chicago has attracted attention for a high murder rate and perceived crime rate compared to other major cities like New York and Los Angeles. However, while it has a large absolute number of crimes due to its size, Chicago is not among the top-25 most violent cities in the United States.", "title": "Law and government" }, { "paragraph_id": 130, "text": "Murder rates in Chicago vary greatly depending on the neighborhood in question. The neighborhoods of Englewood on the South Side, and Austin on the West side, for example, have homicide rates that are ten times higher than other parts of the city. Chicago has an estimated population of over 100,000 active gang members from nearly 60 factions. According to reports in 2013, \"most of Chicago's violent crime comes from gangs trying to maintain control of drug-selling territories\", and is specifically related to the activities of the Sinaloa Cartel, which is active in several American cities. Violent crime rates vary significantly by area of the city, with more economically developed areas having low rates, but other sections have much higher rates of crime. In 2013, the violent crime rate was 910 per 100,000 people; the murder rate was 10.4 – while high crime districts saw 38.9, low crime districts saw 2.5 murders per 100,000.", "title": "Law and government" }, { "paragraph_id": 131, "text": "Chicago has a long history of public corruption that regularly draws the attention of federal law enforcement and federal prosecutors. From 2012 to 2019, 33 Chicago alderpersons were convicted on corruption charges, roughly one third of those elected in the time period. A report from the Office of the Legislative Inspector General noted that over half of Chicago's elected alderpersons took illegal campaign contributions in 2013. Most corruption cases in Chicago are prosecuted by the U.S. Attorney's office, as legal jurisdiction makes most offenses punishable as a federal crime.", "title": "Law and government" }, { "paragraph_id": 132, "text": "Chicago Public Schools (CPS) is the governing body of the school district that contains over 600 public elementary and high schools citywide, including several selective-admission magnet schools. There are eleven selective enrollment high schools in the Chicago Public Schools, designed to meet the needs of Chicago's most academically advanced students. These schools offer a rigorous curriculum with mainly honors and Advanced Placement (AP) courses. Walter Payton College Prep High School is ranked number one in the city of Chicago and the state of Illinois.", "title": "Education" }, { "paragraph_id": 133, "text": "Chicago high school rankings are determined by the average test scores on state achievement tests. The district, with an enrollment exceeding 400,545 students (2013–2014 20th Day Enrollment), is the third-largest in the U.S. On September 10, 2012, teachers for the Chicago Teachers Union went on strike for the first time since 1987 over pay, resources and other issues. According to data compiled in 2014, Chicago's \"choice system\", where students who test or apply and may attend one of a number of public high schools (there are about 130), sorts students of different achievement levels into different schools (high performing, middle performing, and low performing schools).", "title": "Education" }, { "paragraph_id": 134, "text": "Chicago has a network of Lutheran schools, and several private schools are run by other denominations and faiths, such as the Ida Crown Jewish Academy in West Ridge. The Roman Catholic Archdiocese of Chicago operates Catholic schools, that include Jesuit preparatory schools and others. A number of private schools are completely secular. There are also the private Chicago Academy for the Arts, a high school focused on six different categories of the arts and the public Chicago High School for the Arts, a high school focused on five categories (visual arts, theatre, musical theatre, dance, and music) of the arts.", "title": "Education" }, { "paragraph_id": 135, "text": "The Chicago Public Library system operates 3 regional libraries and 77 neighbourhood branches, including the central library.", "title": "Education" }, { "paragraph_id": 136, "text": "Since the 1850s, Chicago has been a world center of higher education and research with several universities. These institutions consistently rank among the top \"National Universities\" in the United States, as determined by U.S. News & World Report. Highly regarded universities in Chicago and the surrounding area are: the University of Chicago; Northwestern University; Illinois Institute of Technology; Loyola University Chicago; DePaul University; Columbia College Chicago and University of Illinois at Chicago. Other notable schools include: Chicago State University; the School of the Art Institute of Chicago; East–West University; National Louis University; North Park University; Northeastern Illinois University; Robert Morris University Illinois; Roosevelt University; Saint Xavier University; Rush University; and Shimer College.", "title": "Education" }, { "paragraph_id": 137, "text": "William Rainey Harper, the first president of the University of Chicago, was instrumental in the creation of the junior college concept, establishing nearby Joliet Junior College as the first in the nation in 1901. His legacy continues with the multiple community colleges in the Chicago proper, including the seven City Colleges of Chicago: Richard J. Daley College, Kennedy–King College, Malcolm X College, Olive–Harvey College, Truman College, Harold Washington College and Wilbur Wright College, in addition to the privately held MacCormac College.", "title": "Education" }, { "paragraph_id": 138, "text": "Chicago also has a high concentration of post-baccalaureate institutions, graduate schools, seminaries, and theological schools, such as the Adler School of Professional Psychology, The Chicago School of Professional Psychology, the Erikson Institute, The Institute for Clinical Social Work, the Lutheran School of Theology at Chicago, the Catholic Theological Union, the Moody Bible Institute, and the University of Chicago Divinity School.", "title": "Education" }, { "paragraph_id": 139, "text": "The Chicago metropolitan area is a major media hub and the third-largest media market in North America, after New York City and Los Angeles. Each of the big four U.S. television networks, CBS, ABC, NBC and Fox, directly owns and operates a high-definition television station in Chicago (WBBM 2, WLS 7, WMAQ 5 and WFLD 32, respectively). Former CW affiliate WGN-TV 9, which was owned from its inception by Tribune Broadcasting (now owned by the Nexstar Media Group since 2019), is carried with some programming differences, as \"WGN America\" on cable and satellite TV nationwide and in parts of the Caribbean. WGN America eventually became NewsNation in 2021.", "title": "Media" }, { "paragraph_id": 140, "text": "Chicago has also been the home of several prominent talk shows, including The Oprah Winfrey Show, Steve Harvey Show, The Rosie Show, The Jerry Springer Show, The Phil Donahue Show, The Jenny Jones Show, and more. The city also has one PBS member station (its second: WYCC 20, removed its affiliation with PBS in 2017): WTTW 11, producer of shows such as Sneak Previews, The Frugal Gourmet, Lamb Chop's Play-Along and The McLaughlin Group. As of 2018, Windy City Live is Chicago's only daytime talk show, which is hosted by Val Warner and Ryan Chiaverini at ABC7 Studios with a live weekday audience. Since 1999, Judge Mathis also films his syndicated arbitration-based reality court show at the NBC Tower. Beginning in January 2019, Newsy began producing 12 of its 14 hours of live news programming per day from its new facility in Chicago.", "title": "Media" }, { "paragraph_id": 141, "text": "Most of Chicago's television stations are owned and operated by the big television network companies. They are:", "title": "Media" }, { "paragraph_id": 142, "text": "WBBM-TV, owned and operated by CBS broadcasting on channel 2.", "title": "Media" }, { "paragraph_id": 143, "text": "WMAQ-TV, owned and operated by NBC broadcasting on channel 5.", "title": "Media" }, { "paragraph_id": 144, "text": "WLS-TV, owned and operated by ABC broadcasting on channel 7.", "title": "Media" }, { "paragraph_id": 145, "text": "WGN-TV, an independent station owned by Nexstar Media Group broadcasting on channel 9.", "title": "Media" }, { "paragraph_id": 146, "text": "WTTW, a PBS member station owned by Window to the World Communications, Inc broadcasting on channel 11.", "title": "Media" }, { "paragraph_id": 147, "text": "WCIU-TV, a CW and MeTV affiliate broadcasting on channel 26.", "title": "Media" }, { "paragraph_id": 148, "text": "WFLD, owned and operated by Fox broadcasting on channel 32.", "title": "Media" }, { "paragraph_id": 149, "text": "WWTO-TV, owned and operated by TBN, licensed in Naperville, broadcasting on channel 35.", "title": "Media" }, { "paragraph_id": 150, "text": "WCPX-TV,owned and operated by Ion Television broadcasting on channel 38.", "title": "Media" }, { "paragraph_id": 151, "text": "WSNS-TV, owned and operated by Telemundo broadcasting on channel 44.", "title": "Media" }, { "paragraph_id": 152, "text": "WYIN, a PBS member station owned by Northwest Indiana Public Broadcasting, Inc. licensed in Gary, Indiana, broadcasting on channel 56.", "title": "Media" }, { "paragraph_id": 153, "text": "WTVK, an independent station owned by Venture Technologies Group, licensed in Oswego, Illinois, broadcasting on channel 59.", "title": "Media" }, { "paragraph_id": 154, "text": "WXFT-DT, owned an operated by Unimas broadcasting on channel 60.", "title": "Media" }, { "paragraph_id": 155, "text": "WJYS, an independent station owned by Millennial Telecommunications, Inc., licensed to Hammond, Indiana, broadcasting on channel 62.", "title": "Media" }, { "paragraph_id": 156, "text": "WGBO-DT, owned and operated by Univision broadcasting on channel 66.", "title": "Media" }, { "paragraph_id": 157, "text": "Two major daily newspapers are published in Chicago: the Chicago Tribune and the Chicago Sun-Times, with the Tribune having the larger circulation. There are also several regional and special-interest newspapers and magazines, such as Chicago, the Dziennik Związkowy (Polish Daily News), Draugas (the Lithuanian daily newspaper), the Chicago Reader, the SouthtownStar, the Chicago Defender, the Daily Herald, Newcity, StreetWise and the Windy City Times. The entertainment and cultural magazine Time Out Chicago and GRAB magazine are also published in the city, as well as local music magazine Chicago Innerview. In addition, Chicago is the home of satirical national news outlet, The Onion, as well as its sister pop-culture publication, The A.V. Club.", "title": "Media" }, { "paragraph_id": 158, "text": "Chicago has five 50,000 watt AM radio stations: the CBS Radio-owned WBBM and WSCR; the Tribune Broadcasting-owned WGN; the Cumulus Media-owned WLS; and the ESPN Radio-owned WMVP. Chicago is also home to a number of national radio shows, including Beyond the Beltway with Bruce DuMont on Sunday evenings.", "title": "Media" }, { "paragraph_id": 159, "text": "Chicago Public Radio produces nationally aired programs such as PRI's This American Life and NPR's Wait Wait...Don't Tell Me!.", "title": "Media" }, { "paragraph_id": 160, "text": "Chicago is a major transportation hub in the United States. It is an important component in global distribution, as it is the third-largest inter-modal port in the world after Hong Kong and Singapore.", "title": "Infrastructure" }, { "paragraph_id": 161, "text": "The city of Chicago has a higher than average percentage of households without a car. In 2015, 26.5 percent of Chicago households were without a car, and increased slightly to 27.5 percent in 2016. The national average was 8.7 percent in 2016. Chicago averaged 1.12 cars per household in 2016, compared to a national average of 1.8.", "title": "Infrastructure" }, { "paragraph_id": 162, "text": "Chicago has many parking garages to accommodate for commuters and local residents. Some of the larger garages downtown include Grant Park Garage, East Monroe Street Garage, and Millennium Park Garage.", "title": "Infrastructure" }, { "paragraph_id": 163, "text": "Chicago since 2009 has relinquished rights to its public street parking. In 2008, as Chicago struggled to close a growing budget deficit, the city agreed to a 75-year, $1.16 billion deal to lease its parking meter system to an operating company created by Morgan Stanley, called Chicago Parking Meters LLC. Daley said the \"agreement is very good news for the taxpayers of Chicago because it will provide more than $1 billion in net proceeds that can be used during this very difficult economy.\"", "title": "Infrastructure" }, { "paragraph_id": 164, "text": "The rights of the parking ticket lease end in 2081, and since 2022 have already recouped over $1.5 billion in revenue for Chicago Parking Meters LLC investors.", "title": "Infrastructure" }, { "paragraph_id": 165, "text": "Seven mainline and four auxiliary interstate highways (55, 57, 65 (only in Indiana), 80 (also in Indiana), 88, 90 (also in Indiana), 94 (also in Indiana), 190, 290, 294, and 355) run through Chicago and its suburbs. Segments that link to the city center are named after influential politicians, with three of them named after former U.S. Presidents (Eisenhower, Kennedy, and Reagan) and one named after two-time Democratic candidate Adlai Stevenson.", "title": "Infrastructure" }, { "paragraph_id": 166, "text": "The Kennedy and Dan Ryan Expressways are the busiest state maintained routes in the entire state of Illinois.", "title": "Infrastructure" }, { "paragraph_id": 167, "text": "The Regional Transportation Authority (RTA) coordinates the operation of the three service boards: CTA, Metra, and Pace.", "title": "Infrastructure" }, { "paragraph_id": 168, "text": "Greyhound Lines provides inter-city bus service to and from the city at the Chicago Bus Station, and Chicago is also the hub for the Midwest network of Megabus (North America).", "title": "Infrastructure" }, { "paragraph_id": 169, "text": "Amtrak long distance and commuter rail services originate from Union Station. Chicago is one of the largest hubs of passenger rail service in the nation. The services terminate in the San Francisco area, Washington, D.C., New York City, New Orleans, Portland, Seattle, Milwaukee, Quincy, St. Louis, Carbondale, Boston, Grand Rapids, Port Huron, Pontiac, Los Angeles, and San Antonio. Future services will terminate at Rockford and Moline. An attempt was made in the early 20th century to link Chicago with New York City via the Chicago – New York Electric Air Line Railroad. Parts of this were built, but it was never completed.", "title": "Infrastructure" }, { "paragraph_id": 170, "text": "In July 2013, the bicycle-sharing system Divvy was launched with 750 bikes and 75 docking stations It is operated by Lyft for the Chicago Department of Transportation. As of July 2019, Divvy operated 5800 bicycles at 608 stations, covering almost all of the city, excluding Pullman, Rosedale, Beverly, Belmont Cragin and Edison Park.", "title": "Infrastructure" }, { "paragraph_id": 171, "text": "In May 2019, The City of Chicago announced its Chicago's Electric Shared Scooter Pilot Program, scheduled to run from June 15 to October 15. The program started on June 15 with 10 different scooter companies, including scooter sharing market leaders Bird, Jump, Lime and Lyft. Each company was allowed to bring 250 electric scooters, although both Bird and Lime claimed that they experienced a higher demand for their scooters. The program ended on October 15, with nearly 800,000 rides taken.", "title": "Infrastructure" }, { "paragraph_id": 172, "text": "Chicago is the largest hub in the railroad industry. All five Class I railroads meet in Chicago. As of 2002, severe freight train congestion caused trains to take as long to get through the Chicago region as it took to get there from the West Coast of the country (about 2 days). According to U.S. Department of Transportation, the volume of imported and exported goods transported via rail to, from, or through Chicago is forecast to increase nearly 150 percent between 2010 and 2040. CREATE, the Chicago Region Environmental and Transportation Efficiency Program, comprises about 70 programs, including crossovers, overpasses and underpasses, that intend to significantly improve the speed of freight movements in the Chicago area.", "title": "Infrastructure" }, { "paragraph_id": 173, "text": "Chicago is served by O'Hare International Airport, the world's busiest airport measured by airline operations, on the far Northwest Side, and Midway International Airport on the Southwest Side. In 2005, O'Hare was the world's busiest airport by aircraft movements and the second-busiest by total passenger traffic. Both O'Hare and Midway are owned and operated by the City of Chicago. Gary/Chicago International Airport and Chicago Rockford International Airport, located in Gary, Indiana and Rockford, Illinois, respectively, can serve as alternative Chicago area airports, however they do not offer as many commercial flights as O'Hare and Midway. In recent years the state of Illinois has been leaning towards building an entirely new airport in the Illinois suburbs of Chicago. The City of Chicago is the world headquarters for United Airlines, the world's third-largest airline.", "title": "Infrastructure" }, { "paragraph_id": 174, "text": "The Port of Chicago consists of several major port facilities within the city of Chicago operated by the Illinois International Port District (formerly known as the Chicago Regional Port District). The central element of the Port District, Calumet Harbor, is maintained by the U.S. Army Corps of Engineers.", "title": "Infrastructure" }, { "paragraph_id": 175, "text": "Electricity for most of northern Illinois is provided by Commonwealth Edison, also known as ComEd. Their service territory borders Iroquois County to the south, the Wisconsin border to the north, the Iowa border to the west and the Indiana border to the east. In northern Illinois, ComEd (a division of Exelon) operates the greatest number of nuclear generating plants in any U.S. state. Because of this, ComEd reports indicate that Chicago receives about 75% of its electricity from nuclear power. Recently, the city began installing wind turbines on government buildings to promote renewable energy.", "title": "Infrastructure" }, { "paragraph_id": 176, "text": "Natural gas is provided by Peoples Gas, a subsidiary of Integrys Energy Group, which is headquartered in Chicago.", "title": "Infrastructure" }, { "paragraph_id": 177, "text": "Domestic and industrial waste was once incinerated but it is now landfilled, mainly in the Calumet area. From 1995 to 2008, the city had a blue bag program to divert recyclable refuse from landfills. Because of low participation in the blue bag programs, the city began a pilot program for blue bin recycling like other cities. This proved successful and blue bins were rolled out across the city.", "title": "Infrastructure" }, { "paragraph_id": 178, "text": "The Illinois Medical District is on the Near West Side. It includes Rush University Medical Center, ranked as the second best hospital in the Chicago metropolitan area by U.S. News & World Report for 2014–16, the University of Illinois Medical Center at Chicago, Jesse Brown VA Hospital, and John H. Stroger Jr. Hospital of Cook County, one of the busiest trauma centers in the nation.", "title": "Infrastructure" }, { "paragraph_id": 179, "text": "Two of the country's premier academic medical centers reside in Chicago, including Northwestern Memorial Hospital and the University of Chicago Medical Center. The Chicago campus of Northwestern University includes the Feinberg School of Medicine; Northwestern Memorial Hospital, which is ranked as the best hospital in the Chicago metropolitan area by U.S. News & World Report for 2017–18; the Shirley Ryan AbilityLab (formerly named the Rehabilitation Institute of Chicago), which is ranked the best U.S. rehabilitation hospital by U.S. News & World Report; the new Prentice Women's Hospital; and Ann & Robert H. Lurie Children's Hospital of Chicago.", "title": "Infrastructure" }, { "paragraph_id": 180, "text": "The University of Illinois College of Medicine at UIC is the second largest medical school in the United States (2,600 students including those at campuses in Peoria, Rockford and Urbana–Champaign).", "title": "Infrastructure" }, { "paragraph_id": 181, "text": "In addition, the Chicago Medical School and Loyola University Chicago's Stritch School of Medicine are located in the suburbs of North Chicago and Maywood, respectively. The Midwestern University Chicago College of Osteopathic Medicine is in Downers Grove.", "title": "Infrastructure" }, { "paragraph_id": 182, "text": "The American Medical Association, Accreditation Council for Graduate Medical Education, Accreditation Council for Continuing Medical Education, American Osteopathic Association, American Dental Association, Academy of General Dentistry, Academy of Nutrition and Dietetics, American Association of Nurse Anesthetists, American College of Surgeons, American Society for Clinical Pathology, American College of Healthcare Executives, the American Hospital Association and Blue Cross and Blue Shield Association are all based in Chicago.", "title": "Infrastructure" } ]	Chicago is the most populous city in the U.S. state of Illinois and the third-most populous in the United States after New York City and Los Angeles. With a population of 2,746,388 in the 2020 census, it is also the most populous city in the Midwest. As the seat of Cook County, the second-most populous county in the U.S., Chicago is the center of the Chicago metropolitan area. Located on the shore of Lake Michigan, Chicago was incorporated as a city in 1837 near a portage between the Great Lakes and the Mississippi River watershed. It grew rapidly in the mid-19th century. In 1871, the Great Chicago Fire destroyed several square miles and left more than 100,000 homeless, but Chicago's population continued to grow. Chicago made noted contributions to urban planning and architecture, such as the Chicago School, the development of the City Beautiful Movement, and the steel-framed skyscraper. Chicago is an international hub for finance, culture, commerce, industry, education, technology, telecommunications, and transportation. It has the largest and most diverse derivatives market in the world, generating 20% of all volume in commodities and financial futures alone. O'Hare International Airport is routinely ranked among the world's top six busiest airports by passenger traffic, and the region is also the nation's railroad hub. The Chicago area has one of the highest gross domestic products (GDP) in the world, generating $689 billion in 2018. Chicago's economy is diverse, with no single industry employing more than 14% of the workforce. Chicago is a major tourist destination. Chicago's culture has contributed much to the visual arts, literature, film, theater, comedy, food, dance, and music. Chicago is home to the Chicago Symphony Orchestra and the Lyric Opera of Chicago, while the Art Institute of Chicago provides an influential visual arts museum and art school. The Chicago area also hosts the University of Chicago, Northwestern University, and the University of Illinois Chicago, among other institutions of learning. Chicago has professional sports teams in each of the major professional leagues, including two Major League Baseball teams.	2001-10-25T18:05:44Z	2023-12-30T00:00:13Z	[ "Template:See also", "Template:Efn", "Template:Harvc", "Template:Subject bar", "Template:Short description", "Template:Climate chart", "Template:Cite press release", "Template:Lang-oj", "Template:Blockquote", "Template:For timeline", "Template:Convert", "Template:US$", "Template:Main list", "Template:Cite journal", "Template:Main", "Template:Legend inline", "Template:Bartable", "Template:Webarchive", "Template:Citation", "Template:As of", "Template:Div col end", "Template:Cite EB1911", "Template:Cite EB1922", "Template:Spoken Wikipedia", "Template:Authority control", "Template:Lang-mia", "Template:Sfnp", "Template:Wide image", "Template:US Census population", "Template:Cite web", "Template:Cite book", "Template:Cbignore", "Template:Use mdy dates", "Template:Holland-Classic", "Template:Navboxes", "Template:Lang", "Template:Further", "Template:Refbegin", "Template:HALS", "Template:Pp-move", "Template:Use American English", "Template:IPAc-en", "Template:Anchor", "Template:Notelist", "Template:Reflist", "Template:Refend", "Template:About", "Template:Pp-vandalism", "Template:Div col", "Template:Respell", "Template:Cite news", "Template:Harvnb", "Template:Official website", "Template:Chicago", "Template:Pie chart", "Template:Cite encyclopedia", "Template:Infobox settlement", "Template:Multiple image", "Template:Chicago weatherbox", "Template:Citation needed", "Template:Small" ]	https://en.wikipedia.org/wiki/Chicago
6,887	Cyrix 6x86	The Cyrix 6x86 is a line of sixth-generation, 32-bit x86 microprocessors designed and released by Cyrix in 1995. Cyrix, being a fabless company, had the chips manufactured by IBM and SGS-Thomson. The 6x86 was made as a direct competitor to Intel's Pentium microprocessor line, and was pin compatible. During the 6x86's development, the majority of applications (office software as well as games) performed almost entirely integer operations. The designers foresaw that future applications would most likely maintain this instruction focus. So, to optimize the chip's performance for what they believed to be the most likely application of the CPU, the integer execution resources received most of the transistor budget. This would later prove to be a strategic mistake, as the popularity of the P5 Pentium caused many software developers to hand-optimize code in assembly language, to take advantage of the P5 Pentium's tightly pipelined and lower latency FPU. For example, the highly anticipated first-person shooter Quake used highly optimized assembly code designed almost entirely around the P5 Pentium's FPU. As a result, the P5 Pentium significantly outperformed other CPUs in the game. The 6x86, previously under the codename "M1" was announced by Cyrix in October 1995. On release only the 100 MHz (P120+) version was available, but a 120 MHz (P150+) version was planned for mid-1995 with a 133 MHz (P166+) model later. The 100 MHz (P120+) 6x86 was available to OEMs for a price of $450 per chip in bulk quantities. In mid February 1996 Cyrix announced the P166+, P150+, and P133+ to be added to the 6x86 model line. IBM, who produced the chips, also announced they will be selling their own versions of the chips. The 6x86 P200+ was planned for the end of 1996, and ended up being released in June. The M2 (6x86MX) was first announced to be in development in mid 1996. It would have MMX and 32-bit optimization. The M2 would also have some of the same features as the Intel Pentium Pro such as register renaming, out-of-order completion, and speculative execution. Additionally it would have 64 KB of cache over the original 6x86 and Pentium Pro's 16 KB. In March 1997 when asked about when the M2 line of processors would begin shipping, Cyrix UK managing director Brendan Sherry stated, "I've read it's going to be May but we've said late Q2 all along and I'm pretty sure we'll make that." The 6x86L was first released in January 1997 to address the heat issues with the original 6x86 line. The 6x86L had a lower V-core voltage and required a split powerplane voltage regulator. In April 1997 the first laptop to use the 6x86 processor was put on sale. They were sold by TigerDirect and had a 12.1in DSTN display, 16 MB of memory, 10x CD-ROM, 1.3 GB hard disk drive, and cost $1,899 for the base price. Later by the end of May 1997 on the 27th, Cyrix said they would announce details of the new chip line (6x86MX) the day before Computex in June 1997. For the low end of the series, the PR166 6x86MX was available for $190 with higher end PR200 and PR233 versions available for $240 and $320. IBM being the producer of Cyrix's chips, would also sell their own version. Cyrix hoped to ship tens of thousands within June 1997 with up to 1 million by the end of the year. Cyrix also expected to release a 266 MHz chip by the end of the 1997 and a 300 MHz in the first quarter of 1998. They had slightly better floating point performance, which cut adding and multiply times by a third, but it was still slower than the Intel Pentium. The M2 also had full MMX instructions, 64KB of cache over the original 16KB, and had a lower core voltage of 2.5V over 3.3V of the original 6x86 line. National Semiconductor acquired Cyrix in July 1997. National Semiconductor was not interested in high performance processors but rather system on a chip devices, and wanted to shift the focus of Cyrix to the MediaGX line. In January 1998 National Semiconductors produced a 6x86MX processor on a 0.25 micron process technology. This reduced the chip size from 150 square millimeters to 88. National shifted their production of the MII and MediaGX to 0.25 by August. In September 1998 IBM's licensing partnership with Cyrix was said to be ended by National Semiconductors. This was due to National wanting to increase production of Cyrix chips in their own facilities, and because having IBM produce Cyrix's chips was causing issues such as profit losses due to IBM frequently pricing their versions of Cyrix's chips lower. National would be paying $50–55 million to IBM to end the partnership, which would end the following April. National would then be moving chip production to their own facility in South Portland, Maine. The Cyrix MII was released in May 1998. These chips were not exciting like people had hoped, as they were just a rebranding of the 6x86MX. In December these chips cost $80 for a MII-333, $59 for a MII-300, $55 for a MII-266, and $48 for a MII-233. In May 1999 National Semiconductor decided to leave the PC chip market due to significant losses, and put the Cyrix CPU division up for sale. VIA bought the Cyrix line in June 1999, and ended the development of high performance processors. The MII-433GP would be the last processor produced by Cyrix. Additionally after VIA's acquisition, the 6x86/L was discontinued, but the 6x86MX/MII line continued to be sold by VIA. VIA would continue to produce the MII throughout the early 2000s. It was expected to be discontinued when the VIA Cyrix MII was released. However, the MII was still available for sale until mid/late 2003, being shown on VIA's website as a product until October, and it still saw use in devices such as network computers. The 6x86 is superscalar and superpipelined and performs register renaming, speculative execution, out-of-order execution, and data dependency removal. However, it continued to use native x86 execution and ordinary microcode only, like Centaur's Winchip, unlike competitors Intel and AMD which introduced the method of dynamic translation to micro-operations with Pentium Pro and K5. The 6x86 is socket-compatible with the Intel P54C Pentium, and was offered in six performance levels: PR 90+, PR 120+, PR 133+, PR 150+, PR 166+ and PR 200+. These performance levels do not map to the clock speed of the chip itself (for example, a PR 133+ ran at 110 MHz, a PR 166+ ran at 133 MHz, etc.). With regard to internal caches, it has a 16-KB primary cache and a fully associative 256-byte instruction line cache is included alongside the primary cache, which functions as the primary instruction cache. The 6x86 and 6x86L were not completely compatible with the Intel P5 Pentium instruction set and is not multi-processor capable. For this reason, the chip identified itself as an 80486 and disabled the CPUID instruction by default. CPUID support could be enabled by first enabling extended CCR registers then setting bit 7 in CCR4. The lack of full P5 Pentium compatibility caused problems with some applications because programmers had begun to use P5 Pentium-specific instructions. Some companies released patches for their products to make them function on the 6x86. Compatibility with the Pentium was improved in the 6x86MX, by adding a Time Stamp Counter to support the P5 Pentium's RDTSC instruction. Support for the Pentium Pro's CMOVcc instructions were also added. Similarly to AMD with their K5 and early K6 processors, Cyrix used a PR rating (Performance Rating) to relate their performance to the Intel P5 Pentium (pre-P55C), as the 6x86's higher per-clock performance relative to a P5 Pentium could be quantified against a higher-clocked Pentium part. For example, a 133 MHz 6x86 will match or outperform a P5 Pentium at 166 MHz, and as a result Cyrix could market the 133 MHz chip as being a P5 Pentium 166's equal. However, the PR rating was not an entirely truthful representation of the 6x86's performance. While the 6x86's integer performance was significantly higher than P5 Pentium's, its floating point performance was more mediocre—between 2 and 4 times the performance of the 486 FPU per clock cycle (depending on the operation and precision). The FPU in the 6x86 was largely the same circuitry that was developed for Cyrix's earlier high performance 8087/80287/80387-compatible coprocessors, which was very fast for its time—the Cyrix FPU was much faster than the 80387, and even the 80486 FPU. However, it was still considerably slower than the new and completely redesigned P5 Pentium and P6 Pentium Pro-Pentium III FPUs. One of the main features of the P5/P6 FPUs is that they supported interleaving of FPU and integer instructions in their design, which Cyrix chips did not integrate. This caused very poor performance with Cyrix CPUs on games and software that took advantage of this. Therefore, despite being very fast clock by clock, the 6x86 and MII were forced to compete at the low-end of the market as AMD K6 and Intel P6 Pentium II were always ahead on clock speed. The 6x86's and MII's old generation "486 class" floating point unit combined with an integer section that was at best on-par with the newer P6 and K6 chips meant that Cyrix could no longer compete in performance. The 6x86 (codename M1) was released by Cyrix in 1996. The first generation of 6x86 had heat problems. This was primarily caused by their higher heat output than other x86 CPUs of the day and, as such, computer builders sometimes did not equip them with adequate cooling. The CPUs topped out at around 25 W heat output (like the AMD K6), whereas the P5 Pentium produced around 15 W of waste heat at its peak. However, both numbers would be a fraction of the heat generated by many high performance processors, some years later. Shortly after the original M1, the M1R was released. The M1R was a switch from SGS-Thomson 3M process to IBM 5M process, making the 6x86 chips 50% smaller. The 6x86L (codename M1L) was later released by Cyrix to address heat issues; the L standing for low-power. Improved manufacturing technologies permitted usage of a lower Vcore. Just like the Pentium MMX, the 6x86L required a split powerplane voltage regulator with separate voltages for I/O and CPU core. Another release of the 6x86, the 6x86MX, added MMX compatibility along with the EMMI instruction set, improved compatibility with the Pentium and Pentium Pro by adding a Time Stamp Counter and CMOVcc instructions respectively, and quadrupled the primary cache size to 64 KB. The 256-byte instruction line cache can be turned into a scratchpad cache to provide support for multimedia operations. Later revisions of this chip were renamed MII, to better compete with the Pentium II processor. 6x86MX / MII was late to market, and couldn't scale well in clock speed with the manufacturing processes used at the time.	[ { "paragraph_id": 0, "text": "The Cyrix 6x86 is a line of sixth-generation, 32-bit x86 microprocessors designed and released by Cyrix in 1995. Cyrix, being a fabless company, had the chips manufactured by IBM and SGS-Thomson. The 6x86 was made as a direct competitor to Intel's Pentium microprocessor line, and was pin compatible. During the 6x86's development, the majority of applications (office software as well as games) performed almost entirely integer operations. The designers foresaw that future applications would most likely maintain this instruction focus. So, to optimize the chip's performance for what they believed to be the most likely application of the CPU, the integer execution resources received most of the transistor budget. This would later prove to be a strategic mistake, as the popularity of the P5 Pentium caused many software developers to hand-optimize code in assembly language, to take advantage of the P5 Pentium's tightly pipelined and lower latency FPU. For example, the highly anticipated first-person shooter Quake used highly optimized assembly code designed almost entirely around the P5 Pentium's FPU. As a result, the P5 Pentium significantly outperformed other CPUs in the game.", "title": "" }, { "paragraph_id": 1, "text": "The 6x86, previously under the codename \"M1\" was announced by Cyrix in October 1995. On release only the 100 MHz (P120+) version was available, but a 120 MHz (P150+) version was planned for mid-1995 with a 133 MHz (P166+) model later. The 100 MHz (P120+) 6x86 was available to OEMs for a price of $450 per chip in bulk quantities.", "title": "History" }, { "paragraph_id": 2, "text": "In mid February 1996 Cyrix announced the P166+, P150+, and P133+ to be added to the 6x86 model line. IBM, who produced the chips, also announced they will be selling their own versions of the chips.", "title": "History" }, { "paragraph_id": 3, "text": "The 6x86 P200+ was planned for the end of 1996, and ended up being released in June.", "title": "History" }, { "paragraph_id": 4, "text": "The M2 (6x86MX) was first announced to be in development in mid 1996. It would have MMX and 32-bit optimization. The M2 would also have some of the same features as the Intel Pentium Pro such as register renaming, out-of-order completion, and speculative execution. Additionally it would have 64 KB of cache over the original 6x86 and Pentium Pro's 16 KB. In March 1997 when asked about when the M2 line of processors would begin shipping, Cyrix UK managing director Brendan Sherry stated, \"I've read it's going to be May but we've said late Q2 all along and I'm pretty sure we'll make that.\"", "title": "History" }, { "paragraph_id": 5, "text": "The 6x86L was first released in January 1997 to address the heat issues with the original 6x86 line. The 6x86L had a lower V-core voltage and required a split powerplane voltage regulator.", "title": "History" }, { "paragraph_id": 6, "text": "In April 1997 the first laptop to use the 6x86 processor was put on sale. They were sold by TigerDirect and had a 12.1in DSTN display, 16 MB of memory, 10x CD-ROM, 1.3 GB hard disk drive, and cost $1,899 for the base price.", "title": "History" }, { "paragraph_id": 7, "text": "Later by the end of May 1997 on the 27th, Cyrix said they would announce details of the new chip line (6x86MX) the day before Computex in June 1997. For the low end of the series, the PR166 6x86MX was available for $190 with higher end PR200 and PR233 versions available for $240 and $320. IBM being the producer of Cyrix's chips, would also sell their own version. Cyrix hoped to ship tens of thousands within June 1997 with up to 1 million by the end of the year. Cyrix also expected to release a 266 MHz chip by the end of the 1997 and a 300 MHz in the first quarter of 1998. They had slightly better floating point performance, which cut adding and multiply times by a third, but it was still slower than the Intel Pentium. The M2 also had full MMX instructions, 64KB of cache over the original 16KB, and had a lower core voltage of 2.5V over 3.3V of the original 6x86 line.", "title": "History" }, { "paragraph_id": 8, "text": "National Semiconductor acquired Cyrix in July 1997. National Semiconductor was not interested in high performance processors but rather system on a chip devices, and wanted to shift the focus of Cyrix to the MediaGX line.", "title": "History" }, { "paragraph_id": 9, "text": "In January 1998 National Semiconductors produced a 6x86MX processor on a 0.25 micron process technology. This reduced the chip size from 150 square millimeters to 88. National shifted their production of the MII and MediaGX to 0.25 by August.", "title": "History" }, { "paragraph_id": 10, "text": "In September 1998 IBM's licensing partnership with Cyrix was said to be ended by National Semiconductors. This was due to National wanting to increase production of Cyrix chips in their own facilities, and because having IBM produce Cyrix's chips was causing issues such as profit losses due to IBM frequently pricing their versions of Cyrix's chips lower. National would be paying $50–55 million to IBM to end the partnership, which would end the following April. National would then be moving chip production to their own facility in South Portland, Maine.", "title": "History" }, { "paragraph_id": 11, "text": "The Cyrix MII was released in May 1998. These chips were not exciting like people had hoped, as they were just a rebranding of the 6x86MX. In December these chips cost $80 for a MII-333, $59 for a MII-300, $55 for a MII-266, and $48 for a MII-233.", "title": "History" }, { "paragraph_id": 12, "text": "In May 1999 National Semiconductor decided to leave the PC chip market due to significant losses, and put the Cyrix CPU division up for sale.", "title": "History" }, { "paragraph_id": 13, "text": "VIA bought the Cyrix line in June 1999, and ended the development of high performance processors. The MII-433GP would be the last processor produced by Cyrix. Additionally after VIA's acquisition, the 6x86/L was discontinued, but the 6x86MX/MII line continued to be sold by VIA.", "title": "History" }, { "paragraph_id": 14, "text": "VIA would continue to produce the MII throughout the early 2000s. It was expected to be discontinued when the VIA Cyrix MII was released. However, the MII was still available for sale until mid/late 2003, being shown on VIA's website as a product until October, and it still saw use in devices such as network computers.", "title": "History" }, { "paragraph_id": 15, "text": "The 6x86 is superscalar and superpipelined and performs register renaming, speculative execution, out-of-order execution, and data dependency removal. However, it continued to use native x86 execution and ordinary microcode only, like Centaur's Winchip, unlike competitors Intel and AMD which introduced the method of dynamic translation to micro-operations with Pentium Pro and K5. The 6x86 is socket-compatible with the Intel P54C Pentium, and was offered in six performance levels: PR 90+, PR 120+, PR 133+, PR 150+, PR 166+ and PR 200+. These performance levels do not map to the clock speed of the chip itself (for example, a PR 133+ ran at 110 MHz, a PR 166+ ran at 133 MHz, etc.).", "title": "Architecture" }, { "paragraph_id": 16, "text": "With regard to internal caches, it has a 16-KB primary cache and a fully associative 256-byte instruction line cache is included alongside the primary cache, which functions as the primary instruction cache.", "title": "Architecture" }, { "paragraph_id": 17, "text": "The 6x86 and 6x86L were not completely compatible with the Intel P5 Pentium instruction set and is not multi-processor capable. For this reason, the chip identified itself as an 80486 and disabled the CPUID instruction by default. CPUID support could be enabled by first enabling extended CCR registers then setting bit 7 in CCR4. The lack of full P5 Pentium compatibility caused problems with some applications because programmers had begun to use P5 Pentium-specific instructions. Some companies released patches for their products to make them function on the 6x86.", "title": "Architecture" }, { "paragraph_id": 18, "text": "Compatibility with the Pentium was improved in the 6x86MX, by adding a Time Stamp Counter to support the P5 Pentium's RDTSC instruction. Support for the Pentium Pro's CMOVcc instructions were also added.", "title": "Architecture" }, { "paragraph_id": 19, "text": "Similarly to AMD with their K5 and early K6 processors, Cyrix used a PR rating (Performance Rating) to relate their performance to the Intel P5 Pentium (pre-P55C), as the 6x86's higher per-clock performance relative to a P5 Pentium could be quantified against a higher-clocked Pentium part. For example, a 133 MHz 6x86 will match or outperform a P5 Pentium at 166 MHz, and as a result Cyrix could market the 133 MHz chip as being a P5 Pentium 166's equal. However, the PR rating was not an entirely truthful representation of the 6x86's performance.", "title": "Performance" }, { "paragraph_id": 20, "text": "While the 6x86's integer performance was significantly higher than P5 Pentium's, its floating point performance was more mediocre—between 2 and 4 times the performance of the 486 FPU per clock cycle (depending on the operation and precision). The FPU in the 6x86 was largely the same circuitry that was developed for Cyrix's earlier high performance 8087/80287/80387-compatible coprocessors, which was very fast for its time—the Cyrix FPU was much faster than the 80387, and even the 80486 FPU. However, it was still considerably slower than the new and completely redesigned P5 Pentium and P6 Pentium Pro-Pentium III FPUs. One of the main features of the P5/P6 FPUs is that they supported interleaving of FPU and integer instructions in their design, which Cyrix chips did not integrate. This caused very poor performance with Cyrix CPUs on games and software that took advantage of this.", "title": "Performance" }, { "paragraph_id": 21, "text": "Therefore, despite being very fast clock by clock, the 6x86 and MII were forced to compete at the low-end of the market as AMD K6 and Intel P6 Pentium II were always ahead on clock speed. The 6x86's and MII's old generation \"486 class\" floating point unit combined with an integer section that was at best on-par with the newer P6 and K6 chips meant that Cyrix could no longer compete in performance.", "title": "Performance" }, { "paragraph_id": 22, "text": "The 6x86 (codename M1) was released by Cyrix in 1996. The first generation of 6x86 had heat problems. This was primarily caused by their higher heat output than other x86 CPUs of the day and, as such, computer builders sometimes did not equip them with adequate cooling. The CPUs topped out at around 25 W heat output (like the AMD K6), whereas the P5 Pentium produced around 15 W of waste heat at its peak. However, both numbers would be a fraction of the heat generated by many high performance processors, some years later. Shortly after the original M1, the M1R was released. The M1R was a switch from SGS-Thomson 3M process to IBM 5M process, making the 6x86 chips 50% smaller.", "title": "Models and variants" }, { "paragraph_id": 23, "text": "The 6x86L (codename M1L) was later released by Cyrix to address heat issues; the L standing for low-power. Improved manufacturing technologies permitted usage of a lower Vcore. Just like the Pentium MMX, the 6x86L required a split powerplane voltage regulator with separate voltages for I/O and CPU core.", "title": "Models and variants" }, { "paragraph_id": 24, "text": "Another release of the 6x86, the 6x86MX, added MMX compatibility along with the EMMI instruction set, improved compatibility with the Pentium and Pentium Pro by adding a Time Stamp Counter and CMOVcc instructions respectively, and quadrupled the primary cache size to 64 KB. The 256-byte instruction line cache can be turned into a scratchpad cache to provide support for multimedia operations. Later revisions of this chip were renamed MII, to better compete with the Pentium II processor. 6x86MX / MII was late to market, and couldn't scale well in clock speed with the manufacturing processes used at the time.", "title": "Models and variants" } ]	The Cyrix 6x86 is a line of sixth-generation, 32-bit x86 microprocessors designed and released by Cyrix in 1995. Cyrix, being a fabless company, had the chips manufactured by IBM and SGS-Thomson. The 6x86 was made as a direct competitor to Intel's Pentium microprocessor line, and was pin compatible. During the 6x86's development, the majority of applications performed almost entirely integer operations. The designers foresaw that future applications would most likely maintain this instruction focus. So, to optimize the chip's performance for what they believed to be the most likely application of the CPU, the integer execution resources received most of the transistor budget. This would later prove to be a strategic mistake, as the popularity of the P5 Pentium caused many software developers to hand-optimize code in assembly language, to take advantage of the P5 Pentium's tightly pipelined and lower latency FPU. For example, the highly anticipated first-person shooter Quake used highly optimized assembly code designed almost entirely around the P5 Pentium's FPU. As a result, the P5 Pentium significantly outperformed other CPUs in the game.	2001-10-25T14:57:41Z	2023-12-09T10:42:00Z	[ "Template:Cite book", "Template:Webarchive", "Template:Cyrix", "Template:Short description", "Template:Infobox CPU", "Template:Timeline of Cyrix products", "Template:Reflist", "Template:Cite news", "Template:Cite web", "Template:Cite magazine", "Template:Use mdy dates" ]	https://en.wikipedia.org/wiki/Cyrix_6x86
6,888	Colon classification	Colon classification (CC) is a library catalogue system developed by Shiyali Ramamrita Ranganathan. It was an early faceted (or analytico-synthetic) classification system. The first edition of colon classification was published in 1933, followed by six more editions. It is especially used in libraries in India. Its name originates from its use of colons to separate facets into classes. Many other classification schemes, some of which are unrelated, also use colons and other punctuation to perform various functions. Originally, CC used only the colon as a separator, but since the second edition, CC has used four other punctuation symbols to identify each facet type. In CC, facets describe "personality" (the most specific subject), matter, energy, space, and time (PMEST). These facets are generally associated with every item in a library, and thus form a reasonably universal sorting system. As an example, the subject "research in the cure of tuberculosis of lungs by x-ray conducted in India in 1950" would be categorized as: Medicine,Lungs;Tuberculosis:Treatment;X-ray:Research.India'1950 This is summarized in a specific call number: L,45;421:6;253:f.44'N5 The colon classification system uses 42 main classes that are combined with other letters, numbers, and marks in a manner resembling the Library of Congress Classification. CC uses five primary categories, or facets, to specify the sorting of a publication. Collectively, they are called PMEST: Other symbols can be used to indicate components of facets called isolates, and to specify complex combinations or relationships between disciplines. The following are the main classes of CC, with some subclasses, the main method used to sort the subclass using the PMEST scheme and examples showing application of PMEST. A common example of the colon classification is:	[ { "paragraph_id": 0, "text": "Colon classification (CC) is a library catalogue system developed by Shiyali Ramamrita Ranganathan. It was an early faceted (or analytico-synthetic) classification system. The first edition of colon classification was published in 1933, followed by six more editions. It is especially used in libraries in India.", "title": "" }, { "paragraph_id": 1, "text": "Its name originates from its use of colons to separate facets into classes. Many other classification schemes, some of which are unrelated, also use colons and other punctuation to perform various functions. Originally, CC used only the colon as a separator, but since the second edition, CC has used four other punctuation symbols to identify each facet type.", "title": "" }, { "paragraph_id": 2, "text": "In CC, facets describe \"personality\" (the most specific subject), matter, energy, space, and time (PMEST). These facets are generally associated with every item in a library, and thus form a reasonably universal sorting system.", "title": "" }, { "paragraph_id": 3, "text": "As an example, the subject \"research in the cure of tuberculosis of lungs by x-ray conducted in India in 1950\" would be categorized as:", "title": "" }, { "paragraph_id": 4, "text": "Medicine,Lungs;Tuberculosis:Treatment;X-ray:Research.India'1950", "title": "" }, { "paragraph_id": 5, "text": "This is summarized in a specific call number:", "title": "" }, { "paragraph_id": 6, "text": "L,45;421:6;253:f.44'N5", "title": "" }, { "paragraph_id": 7, "text": "The colon classification system uses 42 main classes that are combined with other letters, numbers, and marks in a manner resembling the Library of Congress Classification.", "title": "Organization" }, { "paragraph_id": 8, "text": "CC uses five primary categories, or facets, to specify the sorting of a publication. Collectively, they are called PMEST:", "title": "Organization" }, { "paragraph_id": 9, "text": "Other symbols can be used to indicate components of facets called isolates, and to specify complex combinations or relationships between disciplines.", "title": "Organization" }, { "paragraph_id": 10, "text": "The following are the main classes of CC, with some subclasses, the main method used to sort the subclass using the PMEST scheme and examples showing application of PMEST.", "title": "Organization" }, { "paragraph_id": 11, "text": "A common example of the colon classification is:", "title": "Example" } ]	Colon classification (CC) is a library catalogue system developed by Shiyali Ramamrita Ranganathan. It was an early faceted classification system. The first edition of colon classification was published in 1933, followed by six more editions. It is especially used in libraries in India. Its name originates from its use of colons to separate facets into classes. Many other classification schemes, some of which are unrelated, also use colons and other punctuation to perform various functions. Originally, CC used only the colon as a separator, but since the second edition, CC has used four other punctuation symbols to identify each facet type. In CC, facets describe "personality", matter, energy, space, and time (PMEST). These facets are generally associated with every item in a library, and thus form a reasonably universal sorting system. As an example, the subject "research in the cure of tuberculosis of lungs by x-ray conducted in India in 1950" would be categorized as: Medicine,Lungs;Tuberculosis:Treatment;X-ray:Research.India'1950 This is summarized in a specific call number: L,45;421:6;253:f.44'N5	2001-10-25T15:19:28Z	2023-08-17T07:47:16Z	[ "Template:Short description", "Template:Notatypo", "Template:ISBN", "Template:Use dmy dates", "Template:In5", "Template:Reflist", "Template:Cite journal", "Template:Library classification systems", "Template:Authority control" ]	https://en.wikipedia.org/wiki/Colon_classification
6,889	Census	A census is the procedure of systematically acquiring, recording and calculating population information about the members of a given population. This term is used mostly in connection with national population and housing censuses; other common censuses include censuses of agriculture, traditional culture, business, supplies, and traffic censuses. The United Nations (UN) defines the essential features of population and housing censuses as "individual enumeration, universality within a defined territory, simultaneity and defined periodicity", and recommends that population censuses be taken at least every ten years. UN recommendations also cover census topics to be collected, official definitions, classifications and other useful information to co-ordinate international practices. The UN's Food and Agriculture Organization (FAO), in turn, defines the census of agriculture as "a statistical operation for collecting, processing and disseminating data on the structure of agriculture, covering the whole or a significant part of a country." "In a census of agriculture, data are collected at the holding level." The word is of Latin origin: during the Roman Republic, the census was a list of all adult males fit for military service. The modern census is essential to international comparisons of any type of statistics, and censuses collect data on many attributes of a population, not just the number of individuals. Censuses typically began as the only method of collecting national demographic data and are now part of a larger system of different surveys. Although population estimates remain an important function of a census, including exactly the geographic distribution of the population or the agricultural population, statistics can be produced about combinations of attributes, e.g., education by age and sex in different regions. Current administrative data systems allow for other approaches to enumeration with the same level of detail but raise concerns about privacy and the possibility of biasing estimates. A census can be contrasted with sampling in which information is obtained only from a subset of a population; typically, main population estimates are updated by such intercensal estimates. Modern census data are commonly used for research, business marketing, and planning, and as a baseline for designing sample surveys by providing a sampling frame such as an address register. Census counts are necessary to adjust samples to be representative of a population by weighting them as is common in opinion polling. Similarly, stratification requires knowledge of the relative sizes of different population strata, which can be derived from census enumerations. In some countries, the census provides the official counts used to apportion the number of elected representatives to regions (sometimes controversially – e.g., Utah v. Evans). In many cases, a carefully chosen random sample can provide more accurate information than attempts to get a population census. A census is often construed as the opposite of a sample as its intent is to count everyone in a population, rather than a fraction. However, population censuses do rely on a sampling frame to count the population. This is the only way to be sure that everyone has been included, as otherwise those not responding would not be followed up on and individuals could be missed. The fundamental premise of a census is that the population is not known, and a new estimate is to be made by the analysis of primary data. The use of a sampling frame is counterintuitive as it suggests that the population size is already known. However, a census is also used to collect attribute data on the individuals in the nation, not only to assess population size. This process of sampling marks the difference between a historical census, which was a house-to-house process or the product of an imperial decree, and the modern statistical project. The sampling frame used by a census is almost always an address register. Thus, it is not known if there is anyone resident or how many people there are in each household. Depending on the mode of enumeration, a form is sent to the householder, an enumerator calls, or administrative records for the dwelling are accessed. As a preliminary to the dispatch of forms, census workers will check any address problems on the ground. While it may seem straightforward to use the postal service file for this purpose, this can be out of date and some dwellings may contain a number of independent households. A particular problem is what are termed "communal establishments", a category that includes student residences, religious orders, homes for the elderly, people in prisons etc. As these are not easily enumerated by a single householder, they are often treated differently and visited by special teams of census workers to ensure they are classified appropriately. Individuals are normally counted within households, and information is typically collected about the household structure and the housing. For this reason, international documents refer to censuses of population and housing. Normally the census response is made by a household, indicating details of individuals resident there. An important aspect of census enumerations is determining which individuals can be counted and which cannot be counted. Broadly, three definitions can be used: de facto residence; de jure residence; and permanent residence. This is important in considering individuals who have multiple or temporary addresses. Every person should be identified uniquely as resident in one place; but the place where they happen to be on Census Day, their de facto residence, may not be the best place to count them. Where an individual uses services may be more useful, and this is at their usual residence. An individual may be recorded at a "permanent" address, which might be a family home for students or long-term migrants. A precise definition of residence is needed, to decide whether visitors to a country should be included in the population count. This is becoming more important as students travel abroad for education for a period of several years. Other groups causing problems of enumeration are new-born babies, refugees, people away on holiday, people moving home around census day, and people without a fixed address. People with second homes because they are working in another part of the country or have a holiday cottage are difficult to fix at a particular address; this sometimes causes double counting or houses being mistakenly identified as vacant. Another problem is where people use a different address at different times e.g. students living at their place of education in term time but returning to a family home during vacations, or children whose parents have separated who effectively have two family homes. Census enumeration has always been based on finding people where they live, as there is no systematic alternative: any list used to find people is likely to be derived from census activities in the first place. Recent UN guidelines provide recommendations on enumerating such complex households. In the census of agriculture, data is collected at the agricultural holding unit. An agricultural holding is an economic unit of agricultural production under single management comprising all livestock kept and all land used wholly or partly for agricultural production purposes, without regard to title, legal form, or size. Single management may be exercised by an individual or household, jointly by two or more individuals or households, by a clan or tribe, or by a juridical person such as a corporation, cooperative or government agency. The holding's land may consist of one or more parcels, located in one or more separate areas or in one or more territorial or administrative divisions, providing the parcels share the same production means, such as labour, farm buildings, machinery or draught animals. Historical censuses used crude enumeration assuming absolute accuracy. Modern approaches take into account the problems of overcount and undercount, and the coherence of census enumerations with other official sources of data. This reflects a realist approach to measurement, acknowledging that under any definition of residence there is a true value of the population but this can never be measured with complete accuracy. An important aspect of the census process is to evaluate the quality of the data. Many countries use a post-enumeration survey to adjust the raw census counts. This works in a similar manner to capture-recapture estimation for animal populations. Among census experts this method is called dual system enumeration (DSE). A sample of households are visited by interviewers who record the details of the household as at census day. These data are then matched to census records, and the number of people missed can be estimated by considering the numbers of people who are included in one count but not the other. This allows adjustments to the count for non-response, varying between different demographic groups. An explanation using a fishing analogy can be found in "Trout, Catfish and Roach..." which won an award from the Royal Statistical Society for excellence in official statistics in 2011. Triple system enumeration has been proposed as an improvement as it would allow evaluation of the statistical dependence of pairs of sources. However, as the matching process is the most difficult aspect of census estimation this has never been implemented for a national enumeration. It would also be difficult to identify three different sources that were sufficiently different to make the triple system effort worthwhile. The DSE approach has another weakness in that it assumes there is no person counted twice (over count). In de facto residence definitions this would not be a problem but in de jure definitions individuals risk being recorded on more than one form leading to double counting. A particular problem here is students who often have a term time and family address. Several countries have used a system known as short form/long form. This is a sampling strategy that randomly chooses a proportion of people to send a more detailed questionnaire to (the long form). Everyone receives the short form questions. This means more data are collected, but without imposing a burden on the whole population. This also reduces the burden on the statistical office. Indeed, in the UK until 2001 all residents were required to fill in the whole form but only a 10% sample were coded and analysed in detail. New technology means that all data are now scanned and processed. During the 2011 Canadian census there was controversy about the cessation of the mandatory long form census; the head of Statistics Canada, Munir Sheikh, resigned upon the federal government's decision to do so. The use of alternative enumeration strategies is increasing but these are not as simple as many people assume and are only used in developed countries. The Netherlands has been most advanced in adopting a census using administrative data. This allows a simulated census to be conducted by linking several different administrative databases at an agreed time. Data can be matched, and an overall enumeration established allowing for discrepancies between different data sources. A validation survey is still conducted in a similar way to the post enumeration survey employed in a traditional census. Other countries that have a population register use this as a basis for all the census statistics needed by users. This is most common among Nordic countries, but requires many distinct registers to be combined, including population, housing, employment and education. These registers are then combined and brought up to the standard of a statistical register by comparing the data in different sources and ensuring the quality is sufficient for official statistics to be produced. A recent innovation is the French instigation of a rolling census programme with different regions enumerated each year, so that the whole country is completely enumerated every 5 to 10 years. In Europe, in connection with the 2010 census round, many countries adopted alternative census methodologies, often based on the combination of data from registers, surveys and other sources. Censuses have evolved in their use of technology: censuses in 2010 used many new types of computing. In Brazil, handheld devices were used by enumerators to locate residences on the ground. In many countries, census returns could be made via the Internet as well as in paper form. DSE is facilitated by computer matching techniques that can be automated, such as propensity score matching. In the UK, all census formats are scanned and stored electronically before being destroyed, replacing the need for physical archives. The record linking to perform an administrative census would not be possible without large databases being stored on computer systems. There are sometimes problems in introducing new technology. The US census had been intended to use handheld computers, but cost escalated, and this was abandoned, with the contract being sold to Brazil. Online response has some advantages, but one of the functions of the census is to make sure everyone is counted accurately. A system that allowed people to enter their address without verification would be open to abuse. Therefore, households have to be verified on the ground, typically by an enumerator visit or post out. Paper forms are still necessary for those without access to the internet. It is also possible that the hidden nature of an administrative census means that users are not engaged with the importance of contributing their data to official statistics. Alternatively, population estimations may be carried out remotely with geographic information system (GIS) and remote sensing technologies. According to the United Nations Population Fund (UNFPA), "The information generated by a population and housing census – numbers of people, their distribution, their living conditions and other key data – is critical for development." This is because this type of data is essential for policymakers so that they know where to invest. Many countries have outdated or inaccurate data about their populations and thus have difficulty in addressing the needs of the population. The UNFPA said: "The unique advantage of the census is that it represents the entire statistical universe, down to the smallest geographical units, of a country or region. Planners need this information for all kinds of development work, including: assessing demographic trends; analysing socio-economic conditions; designing evidence-based poverty-reduction strategies; monitoring and evaluating the effectiveness of policies; and tracking progress toward national and internationally agreed development goals." In addition to making policymakers aware of population issues, the census is also an important tool for identifying forms of social, demographic or economic exclusions, such as inequalities relating to race, ethics, and religion as well as disadvantaged groups such as those with disabilities and the poor. An accurate census can empower local communities by providing them with the necessary information to participate in local decision-making and ensuring they are represented. The importance of the census of agriculture for development is that it gives a snapshot of the structure of the agricultural sector in a country and, when compared with previous censuses, provides an opportunity to identify trends and structural transformations of the sector, and points towards areas for policy intervention. Census data are used as a benchmark for current statistics and their value is increased when they are employed together with other data sources. Early censuses in the 19th and 20th centuries collected paper documents which had to be collated by hand, so the statistical information obtained was quite basic. The government that owned the data could publish statistics on the state of the nation. The results were used to measure changes in the population and apportion representation. Population estimates could be compared to those of other countries. By the beginning of the 20th century, censuses were recording households and some indications of their employment. In some countries, census archives are released for public examination after many decades, allowing genealogists to track the ancestry of interested people. Archives provide a substantial historical record which may challenge established views. Information such as job titles and arrangements for the destitute and sick may also shed light on the historical structure of society. Political considerations influence the census in many countries. In Canada in 2010 for example, the government under the leadership of Stephen Harper abolished the mandatory long-form census. This abolition was a response to protests from some Canadians who resented the personal questions. The long-form census was reinstated by the Justin Trudeau government in 2016. As governments assumed responsibility for schooling and welfare, large government research departments made extensive use of census data. Population projections could be made, to help plan for provision in local government and regions. Central government could also use census data to allocate funding. Even in the mid 20th century, census data was only directly accessible to large government departments. However, computers meant that tabulations could be used directly by university researchers, large businesses and local government offices. They could use the detail of the data to answer new questions and add to local and specialist knowledge. Nowadays, census data are published in a wide variety of formats to be accessible to business, all levels of government, media, students and teachers, charities, and any citizen who is interested; researchers in particular have an interest in the role of Census Field Officers (CFO) and their assistants. Data can be represented visually or analysed in complex statistical models, to show the difference between certain areas, or to understand the association between different personal characteristics. Census data offer a unique insight into small areas and small demographic groups which sample data would be unable to capture with precision. In the census of agriculture, users need census data to: Although the census provides useful statistical information about a population, the availability of this information could sometimes lead to abuses, political or otherwise, by the linking of individuals' identities to anonymous census data. This is particularly important when individuals' census responses are made available in microdata form, but even aggregate-level data can result in privacy breaches when dealing with small areas and/or rare subpopulations. For instance, when reporting data from a large city, it might be appropriate to give the average income for black males aged between 50 and 60. However, doing this for a town that only has two black males in this age group would be a breach of privacy because either of those persons, knowing his own income and the reported average, could determine the other man's income. Typically, census data are processed to obscure such individual information. Some agencies do this by intentionally introducing small statistical errors to prevent the identification of individuals in marginal populations; others swap variables for similar respondents. Whatever is done to reduce the privacy risk, new improved electronic analysis of data can threaten to reveal sensitive individual information. This is known as statistical disclosure control. Another possibility is to present survey results by means of statistical models in the form of a multivariate distribution mixture. The statistical information in the form of conditional distributions (histograms) can be derived interactively from the estimated mixture model without any further access to the original database. As the final product does not contain any protected microdata, the model-based interactive software can be distributed without any confidentiality concerns. Another method is simply to release no data at all, except very large scale data directly to the central government. Differing release strategies of governments have led to an international project (IPUMS) to co-ordinate access to microdata and corresponding metadata. Such projects such as SDMX also promote standardising metadata, so that best use can be made of the minimal data available. Censuses in Egypt first appeared in the late Middle Kingdom and developed in the New Kingdom Pharaoh Amasis, according to Herodotus, required every Egyptian to declare annually to the nomarch, "whence he gained his living". Under the Ptolemies and the Romans several censuses were conducted in Egypt by government officials There are several accounts of ancient Greek city states carrying out censuses. Censuses are mentioned in the Bible. God commands a per capita tax to be paid with the census for the upkeep of the Tabernacle. The Book of Numbers is named after the counting of the Israelite population according to the house of the Fathers after the exodus from Egypt. A second census was taken while the Israelites were camped in the "plains of Moab". King David performed a census that produced disastrous results. His son, King Solomon, had all of the foreigners in Israel counted. When the Romans took over Judea in AD 6, the legate Publius Sulpicius Quirinius organised a census for tax purposes. The Gospel of Luke links the birth of Jesus either to this event, or to an otherwise unknown census conducted prior to Quirinius' tenure. One of the world's earliest preserved censuses was held in China in AD 2 during the Han dynasty, and is still considered by scholars to be quite accurate. The population was registered as having 57,671,400 individuals in 12,366,470 households but on this occasion only taxable families had been taken into account - indicating the income and the number of soldiers who could be mobilized. Another census was held in AD 144. The oldest recorded census in India is thought to have occurred around 330 BC during the reign of Emperor Chandragupta Maurya under the leadership of Chanakya and Ashoka. The English term is taken directly from the Latin census, from censere ("to estimate"). The census played a crucial role in the administration of the Roman government, as it was used to determine the class a citizen belonged to for both military and tax purposes. Beginning in the middle republic, it was usually carried out every five years. It provided a register of citizens and their property from which their duties and privileges could be listed. It is said to have been instituted by the Roman king Servius Tullius in the 6th century BC, at which time the number of arms-bearing citizens was supposedly counted at around 80,000. The 6 AD "census of Quirinius" undertaken following the imposition of direct Roman rule in Judea was partially responsible for the development of the Zealot movement and several failed rebellions against Rome that ended in the Diaspora. The 15-year indiction cycle established by Diocletian in AD 297 was based on quindecennial censuses and formed the basis for dating in late antiquity and under the Byzantine Empire. In the Middle Ages, the Caliphate began conducting regular censuses soon after its formation, beginning with the one ordered by the second Rashidun caliph, Umar. The Domesday Book was undertaken in AD 1086 by William I of England so that he could properly tax the land he had recently conquered. In 1183, a census was taken of the crusader Kingdom of Jerusalem, to ascertain the number of men and amount of money that could possibly be raised against an invasion by Saladin, sultan of Egypt and Syria. 1328 : First national census of France (L'État des paroisses et des feux) mostly for fiscal purposes. It estimated the French population at 16 to 17 million. In the 15th century, the Inca Empire had a unique way to record census information. The Incas did not have any written language but recorded information collected during censuses and other numeric information as well as non-numeric data on quipus, strings from llama or alpaca hair or cotton cords with numeric and other values encoded by knots in a base-10 positional system. On May 25, 1577, King Philip II of Spain ordered by royal cédula the preparation of a general description of Spain's holdings in the Indies. Instructions and a questionnaire, issued in 1577 by the Office of the Cronista Mayor, were distributed to local officials in the Viceroyalties of New Spain and Peru to direct the gathering of information. The questionnaire, composed of fifty items, was designed to elicit basic information about the nature of the land and the life of its peoples. The replies, known as "relaciones geográficas", were written between 1579 and 1585 and were returned to the Cronista Mayor in Spain by the Council of the Indies. The earliest estimate of the world population was made by Giovanni Battista Riccioli in 1661; the next by Johann Peter Süssmilch in 1741, revised in 1762; the third by Karl Friedrich Wilhelm Dieterici in 1859. In 1931, Walter Willcox published a table in his book, International Migrations: Volume II Interpretations, that estimated the 1929 world population to be roughly 1.8 billion. The UNFPA predicts that the COVID-19 pandemic will threaten the successful conduct of censuses of population and housing in many countries through delays, interruptions that compromise quality, or complete cancellation of census projects. Domestic and donor financing for census may be diverted to address COVID-19 leaving census without crucial funds. Several countries have already taken decisions to postpone the census, with many others yet to announce the way forward. In some countries this is already happening. The pandemic has also affected the planning and implementation of censuses of agriculture in all world regions. The extent of the impact has varied according to the stages at which the censuses are, ranging from planning (i.e. staffing, procurement, preparation of frames, questionnaires), fieldwork (field training and enumeration) or data processing/analysis stages. The census of agriculture's reference period is the agricultural year. Thus, a delay in any census activity may be critical and can result in a full year postponement of the enumeration if the agricultural season is missed. Some publications have discussed the impact of COVID-19 on national censuses of agriculture. The United Nations Population Fund (UNFPA) has requested a global effort to assure that even where census is delayed, census planning and preparations are not cancelled, but continue in order to assure that implementation can proceed safely when the pandemic is under control. While new census methods, including online, register-based, and hybrid approaches are being used across the world, these demand extensive planning and preconditions that cannot be created at short notice. The continuing low supply of personal protective equipment to protect against COVID-19 has immediate implications for conducting census in communities at risk of transmission. The UNFPA Procurement Office is partnering with other agencies to explore new supply chains and resources. This article incorporates text from a free content work. Licensed under CC BY-SA 3.0 IGO (license statement/permission). Text taken from World Programme for the Census of Agriculture 2020 Volume 1 – Programme, concepts and definitions, FAO, FAO. This article incorporates text from a free content work. Licensed under CC BY-SA 3.0 IGO (license statement/permission). Text taken from National agricultural census operations and COVID-19, FAO, FAO. This article incorporates text from a free content work. Licensed under CC BY-SA 3.0 IGO (license statement/permission). Text taken from Impact of COVID-19 on national censuses of agriculture (Status overview) (2020), FAO, FAO.	[ { "paragraph_id": 0, "text": "A census is the procedure of systematically acquiring, recording and calculating population information about the members of a given population. This term is used mostly in connection with national population and housing censuses; other common censuses include censuses of agriculture, traditional culture, business, supplies, and traffic censuses. The United Nations (UN) defines the essential features of population and housing censuses as \"individual enumeration, universality within a defined territory, simultaneity and defined periodicity\", and recommends that population censuses be taken at least every ten years. UN recommendations also cover census topics to be collected, official definitions, classifications and other useful information to co-ordinate international practices.", "title": "" }, { "paragraph_id": 1, "text": "The UN's Food and Agriculture Organization (FAO), in turn, defines the census of agriculture as \"a statistical operation for collecting, processing and disseminating data on the structure of agriculture, covering the whole or a significant part of a country.\" \"In a census of agriculture, data are collected at the holding level.\"", "title": "" }, { "paragraph_id": 2, "text": "The word is of Latin origin: during the Roman Republic, the census was a list of all adult males fit for military service. The modern census is essential to international comparisons of any type of statistics, and censuses collect data on many attributes of a population, not just the number of individuals. Censuses typically began as the only method of collecting national demographic data and are now part of a larger system of different surveys. Although population estimates remain an important function of a census, including exactly the geographic distribution of the population or the agricultural population, statistics can be produced about combinations of attributes, e.g., education by age and sex in different regions. Current administrative data systems allow for other approaches to enumeration with the same level of detail but raise concerns about privacy and the possibility of biasing estimates.", "title": "" }, { "paragraph_id": 3, "text": "A census can be contrasted with sampling in which information is obtained only from a subset of a population; typically, main population estimates are updated by such intercensal estimates. Modern census data are commonly used for research, business marketing, and planning, and as a baseline for designing sample surveys by providing a sampling frame such as an address register. Census counts are necessary to adjust samples to be representative of a population by weighting them as is common in opinion polling. Similarly, stratification requires knowledge of the relative sizes of different population strata, which can be derived from census enumerations. In some countries, the census provides the official counts used to apportion the number of elected representatives to regions (sometimes controversially – e.g., Utah v. Evans). In many cases, a carefully chosen random sample can provide more accurate information than attempts to get a population census.", "title": "" }, { "paragraph_id": 4, "text": "A census is often construed as the opposite of a sample as its intent is to count everyone in a population, rather than a fraction. However, population censuses do rely on a sampling frame to count the population. This is the only way to be sure that everyone has been included, as otherwise those not responding would not be followed up on and individuals could be missed. The fundamental premise of a census is that the population is not known, and a new estimate is to be made by the analysis of primary data. The use of a sampling frame is counterintuitive as it suggests that the population size is already known. However, a census is also used to collect attribute data on the individuals in the nation, not only to assess population size. This process of sampling marks the difference between a historical census, which was a house-to-house process or the product of an imperial decree, and the modern statistical project.", "title": "Sampling" }, { "paragraph_id": 5, "text": "The sampling frame used by a census is almost always an address register. Thus, it is not known if there is anyone resident or how many people there are in each household. Depending on the mode of enumeration, a form is sent to the householder, an enumerator calls, or administrative records for the dwelling are accessed. As a preliminary to the dispatch of forms, census workers will check any address problems on the ground. While it may seem straightforward to use the postal service file for this purpose, this can be out of date and some dwellings may contain a number of independent households. A particular problem is what are termed \"communal establishments\", a category that includes student residences, religious orders, homes for the elderly, people in prisons etc. As these are not easily enumerated by a single householder, they are often treated differently and visited by special teams of census workers to ensure they are classified appropriately.", "title": "Sampling" }, { "paragraph_id": 6, "text": "Individuals are normally counted within households, and information is typically collected about the household structure and the housing. For this reason, international documents refer to censuses of population and housing. Normally the census response is made by a household, indicating details of individuals resident there. An important aspect of census enumerations is determining which individuals can be counted and which cannot be counted. Broadly, three definitions can be used: de facto residence; de jure residence; and permanent residence. This is important in considering individuals who have multiple or temporary addresses. Every person should be identified uniquely as resident in one place; but the place where they happen to be on Census Day, their de facto residence, may not be the best place to count them. Where an individual uses services may be more useful, and this is at their usual residence. An individual may be recorded at a \"permanent\" address, which might be a family home for students or long-term migrants.", "title": "Residence definitions" }, { "paragraph_id": 7, "text": "A precise definition of residence is needed, to decide whether visitors to a country should be included in the population count. This is becoming more important as students travel abroad for education for a period of several years. Other groups causing problems of enumeration are new-born babies, refugees, people away on holiday, people moving home around census day, and people without a fixed address.", "title": "Residence definitions" }, { "paragraph_id": 8, "text": "People with second homes because they are working in another part of the country or have a holiday cottage are difficult to fix at a particular address; this sometimes causes double counting or houses being mistakenly identified as vacant. Another problem is where people use a different address at different times e.g. students living at their place of education in term time but returning to a family home during vacations, or children whose parents have separated who effectively have two family homes. Census enumeration has always been based on finding people where they live, as there is no systematic alternative: any list used to find people is likely to be derived from census activities in the first place. Recent UN guidelines provide recommendations on enumerating such complex households.", "title": "Residence definitions" }, { "paragraph_id": 9, "text": "In the census of agriculture, data is collected at the agricultural holding unit. An agricultural holding is an economic unit of agricultural production under single management comprising all livestock kept and all land used wholly or partly for agricultural production purposes, without regard to title, legal form, or size. Single management may be exercised by an individual or household, jointly by two or more individuals or households, by a clan or tribe, or by a juridical person such as a corporation, cooperative or government agency. The holding's land may consist of one or more parcels, located in one or more separate areas or in one or more territorial or administrative divisions, providing the parcels share the same production means, such as labour, farm buildings, machinery or draught animals.", "title": "Residence definitions" }, { "paragraph_id": 10, "text": "Historical censuses used crude enumeration assuming absolute accuracy. Modern approaches take into account the problems of overcount and undercount, and the coherence of census enumerations with other official sources of data. This reflects a realist approach to measurement, acknowledging that under any definition of residence there is a true value of the population but this can never be measured with complete accuracy. An important aspect of the census process is to evaluate the quality of the data.", "title": "Enumeration strategies" }, { "paragraph_id": 11, "text": "Many countries use a post-enumeration survey to adjust the raw census counts. This works in a similar manner to capture-recapture estimation for animal populations. Among census experts this method is called dual system enumeration (DSE). A sample of households are visited by interviewers who record the details of the household as at census day. These data are then matched to census records, and the number of people missed can be estimated by considering the numbers of people who are included in one count but not the other. This allows adjustments to the count for non-response, varying between different demographic groups. An explanation using a fishing analogy can be found in \"Trout, Catfish and Roach...\" which won an award from the Royal Statistical Society for excellence in official statistics in 2011.", "title": "Enumeration strategies" }, { "paragraph_id": 12, "text": "Triple system enumeration has been proposed as an improvement as it would allow evaluation of the statistical dependence of pairs of sources. However, as the matching process is the most difficult aspect of census estimation this has never been implemented for a national enumeration. It would also be difficult to identify three different sources that were sufficiently different to make the triple system effort worthwhile. The DSE approach has another weakness in that it assumes there is no person counted twice (over count). In de facto residence definitions this would not be a problem but in de jure definitions individuals risk being recorded on more than one form leading to double counting. A particular problem here is students who often have a term time and family address.", "title": "Enumeration strategies" }, { "paragraph_id": 13, "text": "Several countries have used a system known as short form/long form. This is a sampling strategy that randomly chooses a proportion of people to send a more detailed questionnaire to (the long form). Everyone receives the short form questions. This means more data are collected, but without imposing a burden on the whole population. This also reduces the burden on the statistical office. Indeed, in the UK until 2001 all residents were required to fill in the whole form but only a 10% sample were coded and analysed in detail. New technology means that all data are now scanned and processed. During the 2011 Canadian census there was controversy about the cessation of the mandatory long form census; the head of Statistics Canada, Munir Sheikh, resigned upon the federal government's decision to do so.", "title": "Enumeration strategies" }, { "paragraph_id": 14, "text": "The use of alternative enumeration strategies is increasing but these are not as simple as many people assume and are only used in developed countries. The Netherlands has been most advanced in adopting a census using administrative data. This allows a simulated census to be conducted by linking several different administrative databases at an agreed time. Data can be matched, and an overall enumeration established allowing for discrepancies between different data sources. A validation survey is still conducted in a similar way to the post enumeration survey employed in a traditional census.", "title": "Enumeration strategies" }, { "paragraph_id": 15, "text": "Other countries that have a population register use this as a basis for all the census statistics needed by users. This is most common among Nordic countries, but requires many distinct registers to be combined, including population, housing, employment and education. These registers are then combined and brought up to the standard of a statistical register by comparing the data in different sources and ensuring the quality is sufficient for official statistics to be produced.", "title": "Enumeration strategies" }, { "paragraph_id": 16, "text": "A recent innovation is the French instigation of a rolling census programme with different regions enumerated each year, so that the whole country is completely enumerated every 5 to 10 years. In Europe, in connection with the 2010 census round, many countries adopted alternative census methodologies, often based on the combination of data from registers, surveys and other sources.", "title": "Enumeration strategies" }, { "paragraph_id": 17, "text": "Censuses have evolved in their use of technology: censuses in 2010 used many new types of computing. In Brazil, handheld devices were used by enumerators to locate residences on the ground. In many countries, census returns could be made via the Internet as well as in paper form. DSE is facilitated by computer matching techniques that can be automated, such as propensity score matching. In the UK, all census formats are scanned and stored electronically before being destroyed, replacing the need for physical archives. The record linking to perform an administrative census would not be possible without large databases being stored on computer systems.", "title": "Technology" }, { "paragraph_id": 18, "text": "There are sometimes problems in introducing new technology. The US census had been intended to use handheld computers, but cost escalated, and this was abandoned, with the contract being sold to Brazil. Online response has some advantages, but one of the functions of the census is to make sure everyone is counted accurately. A system that allowed people to enter their address without verification would be open to abuse. Therefore, households have to be verified on the ground, typically by an enumerator visit or post out. Paper forms are still necessary for those without access to the internet. It is also possible that the hidden nature of an administrative census means that users are not engaged with the importance of contributing their data to official statistics.", "title": "Technology" }, { "paragraph_id": 19, "text": "Alternatively, population estimations may be carried out remotely with geographic information system (GIS) and remote sensing technologies.", "title": "Technology" }, { "paragraph_id": 20, "text": "According to the United Nations Population Fund (UNFPA), \"The information generated by a population and housing census – numbers of people, their distribution, their living conditions and other key data – is critical for development.\" This is because this type of data is essential for policymakers so that they know where to invest. Many countries have outdated or inaccurate data about their populations and thus have difficulty in addressing the needs of the population.", "title": "Development" }, { "paragraph_id": 21, "text": "The UNFPA said:", "title": "Development" }, { "paragraph_id": 22, "text": "\"The unique advantage of the census is that it represents the entire statistical universe, down to the smallest geographical units, of a country or region. Planners need this information for all kinds of development work, including: assessing demographic trends; analysing socio-economic conditions; designing evidence-based poverty-reduction strategies; monitoring and evaluating the effectiveness of policies; and tracking progress toward national and internationally agreed development goals.\"", "title": "Development" }, { "paragraph_id": 23, "text": "In addition to making policymakers aware of population issues, the census is also an important tool for identifying forms of social, demographic or economic exclusions, such as inequalities relating to race, ethics, and religion as well as disadvantaged groups such as those with disabilities and the poor.", "title": "Development" }, { "paragraph_id": 24, "text": "An accurate census can empower local communities by providing them with the necessary information to participate in local decision-making and ensuring they are represented.", "title": "Development" }, { "paragraph_id": 25, "text": "The importance of the census of agriculture for development is that it gives a snapshot of the structure of the agricultural sector in a country and, when compared with previous censuses, provides an opportunity to identify trends and structural transformations of the sector, and points towards areas for policy intervention. Census data are used as a benchmark for current statistics and their value is increased when they are employed together with other data sources.", "title": "Development" }, { "paragraph_id": 26, "text": "Early censuses in the 19th and 20th centuries collected paper documents which had to be collated by hand, so the statistical information obtained was quite basic. The government that owned the data could publish statistics on the state of the nation. The results were used to measure changes in the population and apportion representation. Population estimates could be compared to those of other countries.", "title": "Uses of census data" }, { "paragraph_id": 27, "text": "By the beginning of the 20th century, censuses were recording households and some indications of their employment. In some countries, census archives are released for public examination after many decades, allowing genealogists to track the ancestry of interested people. Archives provide a substantial historical record which may challenge established views. Information such as job titles and arrangements for the destitute and sick may also shed light on the historical structure of society.", "title": "Uses of census data" }, { "paragraph_id": 28, "text": "Political considerations influence the census in many countries. In Canada in 2010 for example, the government under the leadership of Stephen Harper abolished the mandatory long-form census. This abolition was a response to protests from some Canadians who resented the personal questions. The long-form census was reinstated by the Justin Trudeau government in 2016.", "title": "Uses of census data" }, { "paragraph_id": 29, "text": "As governments assumed responsibility for schooling and welfare, large government research departments made extensive use of census data. Population projections could be made, to help plan for provision in local government and regions. Central government could also use census data to allocate funding. Even in the mid 20th century, census data was only directly accessible to large government departments. However, computers meant that tabulations could be used directly by university researchers, large businesses and local government offices. They could use the detail of the data to answer new questions and add to local and specialist knowledge.", "title": "Uses of census data" }, { "paragraph_id": 30, "text": "Nowadays, census data are published in a wide variety of formats to be accessible to business, all levels of government, media, students and teachers, charities, and any citizen who is interested; researchers in particular have an interest in the role of Census Field Officers (CFO) and their assistants. Data can be represented visually or analysed in complex statistical models, to show the difference between certain areas, or to understand the association between different personal characteristics. Census data offer a unique insight into small areas and small demographic groups which sample data would be unable to capture with precision.", "title": "Uses of census data" }, { "paragraph_id": 31, "text": "In the census of agriculture, users need census data to:", "title": "Uses of census data" }, { "paragraph_id": 32, "text": "Although the census provides useful statistical information about a population, the availability of this information could sometimes lead to abuses, political or otherwise, by the linking of individuals' identities to anonymous census data. This is particularly important when individuals' census responses are made available in microdata form, but even aggregate-level data can result in privacy breaches when dealing with small areas and/or rare subpopulations.", "title": "Privacy and data stewardship" }, { "paragraph_id": 33, "text": "For instance, when reporting data from a large city, it might be appropriate to give the average income for black males aged between 50 and 60. However, doing this for a town that only has two black males in this age group would be a breach of privacy because either of those persons, knowing his own income and the reported average, could determine the other man's income.", "title": "Privacy and data stewardship" }, { "paragraph_id": 34, "text": "Typically, census data are processed to obscure such individual information. Some agencies do this by intentionally introducing small statistical errors to prevent the identification of individuals in marginal populations; others swap variables for similar respondents. Whatever is done to reduce the privacy risk, new improved electronic analysis of data can threaten to reveal sensitive individual information. This is known as statistical disclosure control.", "title": "Privacy and data stewardship" }, { "paragraph_id": 35, "text": "Another possibility is to present survey results by means of statistical models in the form of a multivariate distribution mixture. The statistical information in the form of conditional distributions (histograms) can be derived interactively from the estimated mixture model without any further access to the original database. As the final product does not contain any protected microdata, the model-based interactive software can be distributed without any confidentiality concerns.", "title": "Privacy and data stewardship" }, { "paragraph_id": 36, "text": "Another method is simply to release no data at all, except very large scale data directly to the central government. Differing release strategies of governments have led to an international project (IPUMS) to co-ordinate access to microdata and corresponding metadata. Such projects such as SDMX also promote standardising metadata, so that best use can be made of the minimal data available.", "title": "Privacy and data stewardship" }, { "paragraph_id": 37, "text": "Censuses in Egypt first appeared in the late Middle Kingdom and developed in the New Kingdom Pharaoh Amasis, according to Herodotus, required every Egyptian to declare annually to the nomarch, \"whence he gained his living\". Under the Ptolemies and the Romans several censuses were conducted in Egypt by government officials", "title": "History of censuses" }, { "paragraph_id": 38, "text": "There are several accounts of ancient Greek city states carrying out censuses.", "title": "History of censuses" }, { "paragraph_id": 39, "text": "Censuses are mentioned in the Bible. God commands a per capita tax to be paid with the census for the upkeep of the Tabernacle. The Book of Numbers is named after the counting of the Israelite population according to the house of the Fathers after the exodus from Egypt. A second census was taken while the Israelites were camped in the \"plains of Moab\".", "title": "History of censuses" }, { "paragraph_id": 40, "text": "King David performed a census that produced disastrous results. His son, King Solomon, had all of the foreigners in Israel counted.", "title": "History of censuses" }, { "paragraph_id": 41, "text": "When the Romans took over Judea in AD 6, the legate Publius Sulpicius Quirinius organised a census for tax purposes. The Gospel of Luke links the birth of Jesus either to this event, or to an otherwise unknown census conducted prior to Quirinius' tenure.", "title": "History of censuses" }, { "paragraph_id": 42, "text": "One of the world's earliest preserved censuses was held in China in AD 2 during the Han dynasty, and is still considered by scholars to be quite accurate. The population was registered as having 57,671,400 individuals in 12,366,470 households but on this occasion only taxable families had been taken into account - indicating the income and the number of soldiers who could be mobilized. Another census was held in AD 144.", "title": "History of censuses" }, { "paragraph_id": 43, "text": "The oldest recorded census in India is thought to have occurred around 330 BC during the reign of Emperor Chandragupta Maurya under the leadership of Chanakya and Ashoka.", "title": "History of censuses" }, { "paragraph_id": 44, "text": "The English term is taken directly from the Latin census, from censere (\"to estimate\"). The census played a crucial role in the administration of the Roman government, as it was used to determine the class a citizen belonged to for both military and tax purposes. Beginning in the middle republic, it was usually carried out every five years. It provided a register of citizens and their property from which their duties and privileges could be listed. It is said to have been instituted by the Roman king Servius Tullius in the 6th century BC, at which time the number of arms-bearing citizens was supposedly counted at around 80,000. The 6 AD \"census of Quirinius\" undertaken following the imposition of direct Roman rule in Judea was partially responsible for the development of the Zealot movement and several failed rebellions against Rome that ended in the Diaspora. The 15-year indiction cycle established by Diocletian in AD 297 was based on quindecennial censuses and formed the basis for dating in late antiquity and under the Byzantine Empire.", "title": "History of censuses" }, { "paragraph_id": 45, "text": "In the Middle Ages, the Caliphate began conducting regular censuses soon after its formation, beginning with the one ordered by the second Rashidun caliph, Umar.", "title": "History of censuses" }, { "paragraph_id": 46, "text": "The Domesday Book was undertaken in AD 1086 by William I of England so that he could properly tax the land he had recently conquered. In 1183, a census was taken of the crusader Kingdom of Jerusalem, to ascertain the number of men and amount of money that could possibly be raised against an invasion by Saladin, sultan of Egypt and Syria.", "title": "History of censuses" }, { "paragraph_id": 47, "text": "1328 : First national census of France (L'État des paroisses et des feux) mostly for fiscal purposes. It estimated the French population at 16 to 17 million.", "title": "History of censuses" }, { "paragraph_id": 48, "text": "In the 15th century, the Inca Empire had a unique way to record census information. The Incas did not have any written language but recorded information collected during censuses and other numeric information as well as non-numeric data on quipus, strings from llama or alpaca hair or cotton cords with numeric and other values encoded by knots in a base-10 positional system.", "title": "History of censuses" }, { "paragraph_id": 49, "text": "On May 25, 1577, King Philip II of Spain ordered by royal cédula the preparation of a general description of Spain's holdings in the Indies. Instructions and a questionnaire, issued in 1577 by the Office of the Cronista Mayor, were distributed to local officials in the Viceroyalties of New Spain and Peru to direct the gathering of information. The questionnaire, composed of fifty items, was designed to elicit basic information about the nature of the land and the life of its peoples. The replies, known as \"relaciones geográficas\", were written between 1579 and 1585 and were returned to the Cronista Mayor in Spain by the Council of the Indies.", "title": "History of censuses" }, { "paragraph_id": 50, "text": "The earliest estimate of the world population was made by Giovanni Battista Riccioli in 1661; the next by Johann Peter Süssmilch in 1741, revised in 1762; the third by Karl Friedrich Wilhelm Dieterici in 1859.", "title": "World population estimates" }, { "paragraph_id": 51, "text": "In 1931, Walter Willcox published a table in his book, International Migrations: Volume II Interpretations, that estimated the 1929 world population to be roughly 1.8 billion.", "title": "World population estimates" }, { "paragraph_id": 52, "text": "The UNFPA predicts that the COVID-19 pandemic will threaten the successful conduct of censuses of population and housing in many countries through delays, interruptions that compromise quality, or complete cancellation of census projects. Domestic and donor financing for census may be diverted to address COVID-19 leaving census without crucial funds. Several countries have already taken decisions to postpone the census, with many others yet to announce the way forward. In some countries this is already happening.", "title": "Impact of COVID-19 on census" }, { "paragraph_id": 53, "text": "The pandemic has also affected the planning and implementation of censuses of agriculture in all world regions. The extent of the impact has varied according to the stages at which the censuses are, ranging from planning (i.e. staffing, procurement, preparation of frames, questionnaires), fieldwork (field training and enumeration) or data processing/analysis stages. The census of agriculture's reference period is the agricultural year. Thus, a delay in any census activity may be critical and can result in a full year postponement of the enumeration if the agricultural season is missed. Some publications have discussed the impact of COVID-19 on national censuses of agriculture.", "title": "Impact of COVID-19 on census" }, { "paragraph_id": 54, "text": "The United Nations Population Fund (UNFPA) has requested a global effort to assure that even where census is delayed, census planning and preparations are not cancelled, but continue in order to assure that implementation can proceed safely when the pandemic is under control. While new census methods, including online, register-based, and hybrid approaches are being used across the world, these demand extensive planning and preconditions that cannot be created at short notice. The continuing low supply of personal protective equipment to protect against COVID-19 has immediate implications for conducting census in communities at risk of transmission. The UNFPA Procurement Office is partnering with other agencies to explore new supply chains and resources.", "title": "Impact of COVID-19 on census" }, { "paragraph_id": 55, "text": "This article incorporates text from a free content work. Licensed under CC BY-SA 3.0 IGO (license statement/permission). Text taken from World Programme for the Census of Agriculture 2020 Volume 1 – Programme, concepts and definitions, FAO, FAO.", "title": "Sources" }, { "paragraph_id": 56, "text": "This article incorporates text from a free content work. Licensed under CC BY-SA 3.0 IGO (license statement/permission). Text taken from National agricultural census operations and COVID-19, FAO, FAO.", "title": "Sources" }, { "paragraph_id": 57, "text": "This article incorporates text from a free content work. Licensed under CC BY-SA 3.0 IGO (license statement/permission). Text taken from Impact of COVID-19 on national censuses of agriculture (Status overview) (2020), FAO, FAO.", "title": "Sources" } ]	A census is the procedure of systematically acquiring, recording and calculating population information about the members of a given population. This term is used mostly in connection with national population and housing censuses; other common censuses include censuses of agriculture, traditional culture, business, supplies, and traffic censuses. The United Nations (UN) defines the essential features of population and housing censuses as "individual enumeration, universality within a defined territory, simultaneity and defined periodicity", and recommends that population censuses be taken at least every ten years. UN recommendations also cover census topics to be collected, official definitions, classifications and other useful information to co-ordinate international practices. The UN's Food and Agriculture Organization (FAO), in turn, defines the census of agriculture as "a statistical operation for collecting, processing and disseminating data on the structure of agriculture, covering the whole or a significant part of a country." "In a census of agriculture, data are collected at the holding level." The word is of Latin origin: during the Roman Republic, the census was a list of all adult males fit for military service. The modern census is essential to international comparisons of any type of statistics, and censuses collect data on many attributes of a population, not just the number of individuals. Censuses typically began as the only method of collecting national demographic data and are now part of a larger system of different surveys. Although population estimates remain an important function of a census, including exactly the geographic distribution of the population or the agricultural population, statistics can be produced about combinations of attributes, e.g., education by age and sex in different regions. Current administrative data systems allow for other approaches to enumeration with the same level of detail but raise concerns about privacy and the possibility of biasing estimates. A census can be contrasted with sampling in which information is obtained only from a subset of a population; typically, main population estimates are updated by such intercensal estimates. Modern census data are commonly used for research, business marketing, and planning, and as a baseline for designing sample surveys by providing a sampling frame such as an address register. Census counts are necessary to adjust samples to be representative of a population by weighting them as is common in opinion polling. Similarly, stratification requires knowledge of the relative sizes of different population strata, which can be derived from census enumerations. In some countries, the census provides the official counts used to apportion the number of elected representatives to regions. In many cases, a carefully chosen random sample can provide more accurate information than attempts to get a population census.	2001-10-25T16:07:43Z	2023-12-15T20:50:37Z	[ "Template:See also", "Template:Cite news", "Template:Cite EB1911", "Template:Authority control", "Template:Short description", "Template:Lang", "Template:Cite book", "Template:Clarify", "Template:Cite web", "Template:Cite journal", "Template:Bibleverse", "Template:Annotated link", "Template:Linktext", "Template:Main", "Template:Free-content attribution", "Template:ISBN", "Template:Social surveys", "Template:Sfnp", "Template:Clear", "Template:Bibleref", "Template:Citation", "Template:Nbsp", "Template:Subscription", "Template:Commons category", "Template:Reflist", "Template:ISBN?", "Template:Webarchive", "Template:Fix", "Template:Nowrap", "Template:Self-published source", "Template:Statistics", "Template:Unreferenced" ]	https://en.wikipedia.org/wiki/Census
6,896	Outline of chemistry	The following outline is provided as an overview of and topical guide to chemistry: Chemistry is the science of atomic matter (matter that is composed of chemical elements), especially its chemical reactions, but also including its properties, structure, composition, behavior, and changes as they relate to the chemical reactions. Chemistry is centrally concerned with atoms and their interactions with other atoms, and particularly with the properties of chemical bonds. Chemistry can be described as all of the following: History of chemistry Atomic theory Thermochemistry	[ { "paragraph_id": 0, "text": "The following outline is provided as an overview of and topical guide to chemistry:", "title": "" }, { "paragraph_id": 1, "text": "Chemistry is the science of atomic matter (matter that is composed of chemical elements), especially its chemical reactions, but also including its properties, structure, composition, behavior, and changes as they relate to the chemical reactions. Chemistry is centrally concerned with atoms and their interactions with other atoms, and particularly with the properties of chemical bonds.", "title": "" }, { "paragraph_id": 2, "text": "Chemistry can be described as all of the following:", "title": "Summary" }, { "paragraph_id": 3, "text": "History of chemistry", "title": "History" }, { "paragraph_id": 4, "text": "Atomic theory", "title": "Atomic Theory" }, { "paragraph_id": 5, "text": "Thermochemistry", "title": "Thermochemistry" } ]	The following outline is provided as an overview of and topical guide to chemistry: Chemistry is the science of atomic matter, especially its chemical reactions, but also including its properties, structure, composition, behavior, and changes as they relate to the chemical reactions. Chemistry is centrally concerned with atoms and their interactions with other atoms, and particularly with the properties of chemical bonds.	2001-11-08T13:21:18Z	2023-10-30T12:06:20Z	[ "Template:Navbox periodic table", "Template:Branches of chemistry", "Template:Short description", "Template:TOC limit", "Template:Main", "Template:Reflist", "Template:Cite journal", "Template:Webarchive", "Template:Portal bar", "Template:TopicTOC-Chemistry", "Template:Cite web", "Template:Citation", "Template:Outline footer" ]	https://en.wikipedia.org/wiki/Outline_of_chemistry
6,901	Outline of critical theory	The following outline is provided as an overview of and topical guide to critical theory: Critical theory – the examination and critique of society and culture, drawing from knowledge across the social sciences and humanities. The term has two different meanings with different origins and histories: one originating in sociology and the other in literary criticism. This has led to the very literal use of 'critical theory' as an umbrella term to describe any theory founded upon critique. The term "Critical Theory" was first coined by Max Horkheimer in his 1937 essay "Traditional and Critical Theory".	[ { "paragraph_id": 0, "text": "The following outline is provided as an overview of and topical guide to critical theory:", "title": "" }, { "paragraph_id": 1, "text": "Critical theory – the examination and critique of society and culture, drawing from knowledge across the social sciences and humanities. The term has two different meanings with different origins and histories: one originating in sociology and the other in literary criticism. This has led to the very literal use of 'critical theory' as an umbrella term to describe any theory founded upon critique. The term \"Critical Theory\" was first coined by Max Horkheimer in his 1937 essay \"Traditional and Critical Theory\".", "title": "" } ]	The following outline is provided as an overview of and topical guide to critical theory: Critical theory – the examination and critique of society and culture, drawing from knowledge across the social sciences and humanities. The term has two different meanings with different origins and histories: one originating in sociology and the other in literary criticism. This has led to the very literal use of 'critical theory' as an umbrella term to describe any theory founded upon critique. The term "Critical Theory" was first coined by Max Horkheimer in his 1937 essay "Traditional and Critical Theory".	2002-02-21T21:37:44Z	2023-10-30T12:07:58Z	[ "Template:Columns-list", "Template:Reflist", "Template:Sister project links", "Template:Short description", "Template:Main", "Template:See also", "Template:Broader", "Template:Cite journal", "Template:Outline footer", "Template:TOC limit" ]	https://en.wikipedia.org/wiki/Outline_of_critical_theory
6,902	Cotswolds	The Cotswolds (/ˈkɒtswoʊldz, ˈkɒtswəldz/ KOTS-wohldz, KOTS-wəldz) is a region in central-southwest England, along a range of rolling hills that rise from the meadows of the upper River Thames to an escarpment above the Severn Valley and Evesham Vale. The area is defined by the bedrock of Jurassic limestone that creates a type of grassland habitat rare in the UK and that is quarried for the golden-coloured Cotswold stone. The predominantly rural landscape contains stone-built villages, towns, and stately homes and gardens featuring the local stone. Designated as an Area of Outstanding Natural Beauty (AONB) in 1966, the Cotswolds covers 787 square miles (2,038 km), making it the largest AONB. It is England's third-largest protected landscape, after the Lake District and Yorkshire Dales national parks. Its boundaries are roughly 25 miles (40 km) across and 90 miles (140 km) long, stretching south-west from just south of Stratford-upon-Avon to just south of Bath, near Radstock. It lies across the boundaries of several English counties; mainly Gloucestershire and Oxfordshire, and parts of Wiltshire, Somerset, Worcestershire, and Warwickshire. The region's highest point is Cleeve Hill at 1,083 ft (330 m), just east of Cheltenham. The hills give their name to the Cotswold local government district, formed on 1 April 1974, within the county of Gloucestershire. Its main town is Cirencester, where the Cotswold District Council offices are. As of 2021, the population of the 450-square-mile (1,200 km) district was about 91,000 . The much larger area referred to as the Cotswolds encompasses nearly 800 square miles (2,100 km). The population of the Area of Outstanding Natural Beauty was 139,000 in 2016. The largest excavation of Jurassic period echinoderm fossils, including of rare and previously unknown species, occurred at a quarry in the Cotswolds in 2021. There is evidence of Neolithic settlement from burial chambers on Cotswold Edge, and there are remains of Bronze and Iron Age forts. Later the Romans built villas, such as at Chedworth, settlements such as Gloucester, and paved the Celtic path later known as Fosse Way. During the Middle Ages, thanks to the breed of sheep known as the Cotswold Lion, the Cotswolds became prosperous from the wool trade with the continent, with much of the money made from wool directed towards the building of churches. The most successful era for the wool trade was 1250–1350; much of the wool at that time was sold to Italian merchants. The area still preserves numerous large, handsome Cotswold Stone "wool churches". The affluent area in the 21st century has attracted wealthy Londoners and others who own second homes there or have chosen to retire to the Cotswolds. The name Cotswold is popularly believed to mean the "sheep enclosure in rolling hillsides", incorporating the term wold, meaning hills. Compare also the Weald, from the Old English term meaning 'forest'. But for many years the English Place-Name Society has accepted that the term Cotswold is derived from Codesuualt of the 12th century or other variations on this form, the etymology of which is 'Cod's-wold', meaning 'Cod's high open land'. Cod was interpreted as an Old English personal name, which may be recognised in further names: Cutsdean, Codeswellan, and Codesbyrig, some of which date to the 8th century. It has subsequently been noticed that Cod could derive philologically from a Brittonic female cognate Cuda, a hypothetical mother goddess in Celtic mythology postulated to have been worshipped in the Cotswold region. The Cotswolds' spine runs southwest to northeast through six counties, particularly Gloucestershire, west Oxfordshire, and southwestern Warwickshire. The Cotswolds' northern and western edges are marked by steep escarpments down to the Severn valley and the Warwickshire Avon. This feature, known as the Cotswold escarpment or the Cotswold Edge, is a result of the uplifting (tilting) of the limestone layer, exposing its broken edge. This is a cuesta, in geological terms. The dip slope is to the southeast. On the eastern boundary lies the city of Oxford and on the west is Stroud. To the southeast, the upper reaches of the Thames Valley and towns such as Lechlade, Tetbury, and Fairford are often considered to mark the limit of the region. To the south the Cotswolds, with the characteristic uplift of the Cotswold Edge, reach beyond Bath, and towns such as Chipping Sodbury and Marshfield share elements of Cotswold character. The area is characterised by attractive small towns and villages built of the underlying Cotswold stone (a yellow oolitic limestone). This limestone is rich in fossils, particularly of fossilised sea urchins. Cotswold towns include Bourton-on-the-Water, Broadway, Chalford, Chipping Campden, Chipping Norton, Cricklade, Dursley, Malmesbury, Minchinhampton, Moreton-in-Marsh, Nailsworth, Northleach, Painswick, Stow-on-the-Wold, Stroud, Tetbury, Witney, Winchcombe and Wotton-under-Edge. In addition, much of Box lies in the Cotswolds. Bath, Cheltenham, Cirencester, Gloucester, Stroud, and Swindon are larger urban centres that border on, or are virtually surrounded by, the Cotswold AONB. Chipping Campden is notable as the home of the Arts and Crafts movement, founded by William Morris at the end of the 19th and beginning of the 20th centuries. Morris lived occasionally in Broadway Tower, a folly, now part of a country park. Chipping Campden is also known for the annual Cotswold Olimpick Games, a celebration of sports and games dating to the early 17th century. Of the Cotswolds' nearly 800 square miles (2,100 km), roughly 80 per cent is farmland. There are over 3,000 miles (4,800 km) of footpaths and bridleways, and 4,000 miles (6,400 km) of historic stone walls. A 2017 report on employment within the Area of Outstanding Natural Beauty stated that the main sources of income were real estate, renting and business activities, manufacturing, and wholesale & retail trade repairs. Some 44% of residents were employed in these sectors. Agriculture is also important; 86% of the land in the AONB is used for this purpose. The primary crops include barley, beans, rape seed oil and wheat, while the raising of sheep is also important; cows and pigs are also reared. The livestock sector has been declining since 2002. According to 2011 census data for the Cotswolds, the wholesale and retail trade was the largest employer (15.8% of the workforce), followed by education (9.7%) and health and social work (9.3%). The report also indicates that a relatively higher proportion of residents worked in agriculture, forestry and fishing, accommodation and food services, as well as in professional, scientific, and technical activities. Unemployment in the Cotswold District was among the lowest in the country. An August 2017 report showed only 315 unemployed persons, a decrease of five from a year earlier. Tourism is a significant part of the economy. The Cotswold District area gained over £373 million from visitor spending on accommodation, £157 million on local attractions and entertainments, and about £100m on travel in 2016. In the larger Cotswolds Tourism area, including Stroud, Cheltenham, Gloucester and Tewkesbury, tourism generated about £1 billion in 2016, providing 200,000 jobs. Some 38 million day visits were made to the Cotswold Tourism area that year. Many travel guides direct tourists to Chipping Campden, Stow-on-the-Wold, Bourton-on-the-Water, Broadway, Bibury, and Stanton. Some of these locations can be very crowded at times. Roughly 300,000 people visit Bourton per year, for example, with about half staying for a day or less. The area also has numerous public walking trails and footpaths that attract visitors, including the 93-mile (150 km) Cotswold Way (part of the National Trails system) from Bath to Chipping Campden. In August 2018, the final decision was made for a Local Plan that would lead to the building of nearly 7,000 additional homes by 2031, in addition to over 3,000 already built. Areas for development include Cirencester, Bourton-on-the-Water, Down Ampney, Fairford, Kemble, Lechlade, Northleach, South Cerney, Stow-on-the-Wold, Tetbury and Moreton-in-Marsh. Some of the money received from developers will be earmarked for new infrastructure to support the increasing population. Cotswold stone is a yellow oolitic Jurassic limestone. This limestone is rich in fossils, particularly of fossilised sea urchins. When weathered, the colour of buildings made or faced with this stone is often described as honey or golden. The stone varies in colour from north to south, being honey-coloured in the north and northeast, as in villages such as Stanton and Broadway; golden-coloured in the central and southern areas, as in Dursley and Cirencester; and pearly white in Bath. The rock outcrops at places on the Cotswold Edge; small quarries are common. The exposures are rarely sufficiently compact to be good for rock-climbing, but an exception is Castle Rock, on Cleeve Hill, near Cheltenham. In his 1934 book English Journey, J. B. Priestley wrote of Cotswold buildings made of the local stone: The truth is that it has no colour that can be described. Even when the sun is obscured and the light is cold, these walls are still faintly warm and luminous, as if they knew the trick of keeping the lost sunlight of centuries glimmering about them The Cotswolds were designated as an Area of Outstanding Natural Beauty (AONB) in 1966, with an expansion on 21 December 1990 to 1,990 square kilometres (768 sq mi). In 1991, all AONBs were measured again using modern methods, and the official area of the Cotswolds AONB was increased to 2,038 square kilometres (787 sq mi). In 2000, the government confirmed that AONBs have the same landscape quality and status as National Parks. The Cotswolds AONB, which is the largest in England and Wales, stretches from the border regions of South Warwickshire and Worcestershire, through West Oxfordshire and Gloucestershire, and takes in parts of Wiltshire and of Bath and North East Somerset in the south. Gloucestershire County Council is responsible for sixty-three per cent of the AONB. The Cotswolds Conservation Board has the task of conserving and enhancing the AONB. Established under statute in 2004 as an independent public body, the Board carries out a range of work from securing funding for 'on the ground' conservation projects, to providing a strategic overview of the area for key decision makers, such as planning officials. The Board is funded by Natural England and the seventeen local authorities that are covered by the AONB. The Cotswolds AONB Management Plan 2018–2023 was adopted by the Board in September 2018. The landscape of the AONB is varied, including escarpment outliers, escarpments, rolling hills and valleys, enclosed limestone valleys, settled valleys, ironstone hills and valleys, high wolds and high wold valleys, high wold dip-slopes, dip-slope lowland and valleys, a Low limestone plateau, cornbrash lowlands, farmed slopes, a broad floodplain valley, a large pastoral lowland vale, a settled unwooded vale, and an unwooded vale. While the beauty of the Cotswolds AONB is intertwined with that of the villages that seem almost to grow out of the landscape, the Cotswolds were primarily designated an Area of Outstanding Natural Beauty for the rare limestone grassland habitats as well as the old growth beech woodlands that typify the area. These habitat areas are also the last refuge for many other flora and fauna, with some so endangered that they are protected under the Wildlife and Countryside Act 1981. Cleeve Hill, and its associated commons, is a fine example of a limestone grassland and it is one of the few locations where the Duke of Burgundy butterfly may still be found in abundance. A June 2018 report stated that the AONB receives "23 million visitors a year, the third largest of any protected landscape". Earlier that year, Environment secretary Michael Gove announced that a panel would be formed to consider making some of the AONBs into National Parks. The review will file its report in 2019. In April 2018, the Cotswolds Conservation Board had written to Natural England "requesting that consideration be given to making the Cotswolds a National Park", according to Liz Eyre, Chairman. This has led to some concern; one member of the Cotswold District Council said, "National Park designation is a significant step further and raises the prospect of key decision making powers being taken away from democratically elected councillors". In other words, Cotswold District Council would no longer have the authority to grant and refuse housing applications. Indicative of the Cotswolds' uniqueness and value is that five European Special Areas of Conservation, three national nature reserves and more than 80 Sites of Special Scientific Interest are within the Cotswolds AONB. The Cotswold Voluntary Wardens Service was established in 1968 to help conserve and enhance the area, and now has more than 300 wardens. The Cotswold Way is a long-distance footpath, just over 100 miles (160 km) long, running the length of the AONB, mainly on the edge of the Cotswold escarpment with views over the Severn Valley and the Vale of Evesham. In September 2020, the Cotswolds AONB rebranded itself as the "Cotswolds National Landscape", using a proposed name replacement for "Areas of Outstanding Natural Beauty", until all AONBs in England and Wales adopted "National Landscape" in 2023. Pictured is the Garden of Sudeley Castle at Winchcombe. The present structure was built in the 15th century and may be on the site of a 12th-century castle. It is north of the spa town of Cheltenham, which has much Georgian architecture. Further south, towards Tetbury, is the fortress known as Beverston Castle, founded in 1229 by Maurice de Gaunt. In the same area is Calcot Manor, a manor house with origins in about 1300 as a tithe barn. Tetbury Market House was built in 1655. During the Middle Ages, Tetbury became an important market for Cotswold wool and yarn. Chavenage House is an Elizabethan-era manor house 1.5 miles (2.4 km) northwest of Tetbury. Chedworth Roman Villa, where several mosaic floors are on display, is near the Roman road known as the Fosse Way, 8 miles (13 km) north of the town of Corinium Dobunnorum (Cirencester). Cirencester Abbey was founded as an Augustinian monastery in 1117, and Malmesbury Abbey was one of the few English houses with a continual history from the 7th century through to the Dissolution of the Monasteries. An unusual house in this area is Quarwood, a Victorian Gothic house in Stow-on-the-Wold. The grounds, covering 42 acres (17 ha), include parkland, fish ponds, paddocks, garages, woodlands and seven cottages. Another is Woodchester Mansion, an unfinished, Gothic revival mansion house in Woodchester Park near Nympsfield. Newark Park is a Grade I listed country house of Tudor origins near the village of Ozleworth, Wotton-under-Edge. The house sits in an estate of 700 acres (300 ha) at the Cotswold escarpment's southern end. Another of the many manor houses in the area, Owlpen Manor in the village of Owlpen in the Stroud district, is also Tudor and Grade I listed. Further north, Broadway Tower is a folly on Broadway Hill, near the village of Broadway, Worcestershire. To the south of the Cotswolds is Corsham Court, a country house in a park designed by Capability Brown in the town of Corsham, 3 miles (5 km) west of Chippenham, Wiltshire. According to users of the worldwide TripAdvisor travel site, in 2018 the following were among the best attractions in the Cotswolds: The Cotswolds lie between the M5, M40 and M4 motorways. The main A-roads through the area are: These all roughly follow the routes of ancient roads, some laid down by the Romans, such as Ermin Way and the Fosse Way. There are local bus services across the area, but some are infrequent. The River Thames flows from the Cotswolds and is navigable from Inglesham and Lechlade-on-Thames downstream to Oxford. West of Inglesham. the Thames and Severn Canal and the Stroudwater Navigation connected the Thames to the River Severn; this route is mostly disused nowadays but several parts are in the process of being restored. The area is bounded by two major rail routes: in the south by the main Bristol–Bath–London line (including the South Wales main line) and in the west by the Bristol–Birmingham main line. In addition, the Cotswold line runs through the Cotswolds from Oxford to Worcester, and the Golden Valley line runs across the hills from Swindon via Stroud to Gloucester, carrying fast and local services. Mainline rail services to the big cities run from railway stations such as Bath, Swindon, Oxford, Cheltenham, and Worcester. Mainline trains run by Great Western Railway to London Paddington also are available from Kemble station near Cirencester, Kingham station near Stow-on-the-Wold, Charlbury station, and Moreton-in-Marsh station. Additionally, there is the Gloucestershire Warwickshire Railway, a steam heritage railway over part of the closed Stratford–Cheltenham line, running from Cheltenham Racecourse through Gotherington, Winchcombe, and Hayles Abbey Halt to Toddington and Laverton. The preserved line has been extended to Broadway. The population of the Cotswold local authority area in the 2021 census was 90,800, an increase of 9.6% from 82,900 in 2011. The percentage of usual residents in relationships, aged 16 and above, were: In 2021, 96.3% of people in Cotswold identified their ethnic group with the "White" category, a slight decrease from 97.8% in 2011. Over 1.3% identified as "Asian" or British Asian, 1.5% chose "Mixed or Multiple" category, 0.4% were "Black, Black British, Caribbean or African" and 0.4% chose "Other". The Cotswold region has inspired several notable English composers. In the early 1900s, Herbert Howells and Ivor Gurney took long walks together over the hills, and Gurney urged Howells to make the landscape, including the nearby Malvern Hills, the inspiration for future work. In 1916, Howells wrote his first major piece, the Piano Quartet in A minor, inspired by the magnificent view of the Malverns; he dedicated it to "the hill at Chosen (Churchdown) and Ivor Gurney who knows it". Another contemporary of theirs, Gerald Finzi, lived in nearby Painswick. Gustav Holst, who was born in Cheltenham, spent much of his early years playing the organ in Cotswold village churches, including at Cranham, after which he titled his tune for In the Bleak Midwinter. He also called his Symphony in F major, Op. 8, H47, The Cotswolds. Holst's friend Ralph Vaughan Williams was born at Down Ampney in the Cotswolds and, though he moved to Surrey as a boy, gave the name of his native village to the tune for Come Down, O Love Divine. His opera Hugh the Drover depicts life in a Cotswold village and incorporates local folk melodies. In 1988, the 6th symphony (Op. 109) of composer Derek Bourgeois was titled A Cotswold Symphony. The Cotswolds are a popular location for scenes in movies and television programmes. The 2008 film Better Things, directed by Duane Hopkins, is set in a small Cotswold village. The fictional detective Agatha Raisin lives in the fictional Cotswold village of Carsely. Other movies filmed in the Cotswolds or nearby, at least in part, include some of the Harry Potter series (Gloucester Cathedral), Bridget Jones's Diary (Snowshill), Pride and Prejudice (Cheltenham Town Hall), and Braveheart (Cotswold Farm Park). In 2014, some scenes of the 2016 movie Alice Through the Looking Glass were filmed at the Gloucester Docks just outside the Cotswold District; some scenes in the 2006 movie Amazing Grace were also filmed at the Docks. The television series Father Brown is set and primarily filmed in the Cotswolds. Scenes and buildings in Sudeley Castle was often featured in the series. The vicarage in Blockley was used for the main character's residence and the Anglican St Peter and St Paul church was the Roman Catholic St Mary's in the series. Other filming locations included Guiting Power, the former hospital in Moreton-in-Marsh, the Winchcombe railway station, Lower Slaughter, and St Peter's Church in Upper Slaughter. In the 2010s BBC TV series Poldark, the location for Ross Poldark's family home, Trenwith, is Chavenage House, Tetbury, which is open to the public. Many exterior shots of village life in the Downton Abbey TV series were filmed in Bampton, Oxfordshire. Other filming locations in that county included Swinbrook, Cogges, and Shilton. The city of Bath hosted crews that filmed parts of the movies Vanity Fair, Persuasion, Dracula, and The Duchess. Gloucester and other places in Gloucestershire, some within the Area of Natural Beauty, have been a popular location for filming period films and television programmes over the years. Gloucester Cathedral has been particularly popular. The sighting of peregrine falcons in the landscape of the Cotswolds is mentioned in The Peregrine by John Alec Baker. The television documentary agriculture-themed series Clarkson's Farm was filmed at various locations around Chipping Norton.	[ { "paragraph_id": 0, "text": "The Cotswolds (/ˈkɒtswoʊldz, ˈkɒtswəldz/ KOTS-wohldz, KOTS-wəldz) is a region in central-southwest England, along a range of rolling hills that rise from the meadows of the upper River Thames to an escarpment above the Severn Valley and Evesham Vale.", "title": "" }, { "paragraph_id": 1, "text": "The area is defined by the bedrock of Jurassic limestone that creates a type of grassland habitat rare in the UK and that is quarried for the golden-coloured Cotswold stone. The predominantly rural landscape contains stone-built villages, towns, and stately homes and gardens featuring the local stone.", "title": "" }, { "paragraph_id": 2, "text": "Designated as an Area of Outstanding Natural Beauty (AONB) in 1966, the Cotswolds covers 787 square miles (2,038 km), making it the largest AONB. It is England's third-largest protected landscape, after the Lake District and Yorkshire Dales national parks. Its boundaries are roughly 25 miles (40 km) across and 90 miles (140 km) long, stretching south-west from just south of Stratford-upon-Avon to just south of Bath, near Radstock. It lies across the boundaries of several English counties; mainly Gloucestershire and Oxfordshire, and parts of Wiltshire, Somerset, Worcestershire, and Warwickshire. The region's highest point is Cleeve Hill at 1,083 ft (330 m), just east of Cheltenham.", "title": "" }, { "paragraph_id": 3, "text": "The hills give their name to the Cotswold local government district, formed on 1 April 1974, within the county of Gloucestershire. Its main town is Cirencester, where the Cotswold District Council offices are. As of 2021, the population of the 450-square-mile (1,200 km) district was about 91,000 . The much larger area referred to as the Cotswolds encompasses nearly 800 square miles (2,100 km). The population of the Area of Outstanding Natural Beauty was 139,000 in 2016.", "title": "" }, { "paragraph_id": 4, "text": "The largest excavation of Jurassic period echinoderm fossils, including of rare and previously unknown species, occurred at a quarry in the Cotswolds in 2021. There is evidence of Neolithic settlement from burial chambers on Cotswold Edge, and there are remains of Bronze and Iron Age forts. Later the Romans built villas, such as at Chedworth, settlements such as Gloucester, and paved the Celtic path later known as Fosse Way.", "title": "History" }, { "paragraph_id": 5, "text": "During the Middle Ages, thanks to the breed of sheep known as the Cotswold Lion, the Cotswolds became prosperous from the wool trade with the continent, with much of the money made from wool directed towards the building of churches. The most successful era for the wool trade was 1250–1350; much of the wool at that time was sold to Italian merchants. The area still preserves numerous large, handsome Cotswold Stone \"wool churches\". The affluent area in the 21st century has attracted wealthy Londoners and others who own second homes there or have chosen to retire to the Cotswolds.", "title": "History" }, { "paragraph_id": 6, "text": "The name Cotswold is popularly believed to mean the \"sheep enclosure in rolling hillsides\", incorporating the term wold, meaning hills. Compare also the Weald, from the Old English term meaning 'forest'. But for many years the English Place-Name Society has accepted that the term Cotswold is derived from Codesuualt of the 12th century or other variations on this form, the etymology of which is 'Cod's-wold', meaning 'Cod's high open land'. Cod was interpreted as an Old English personal name, which may be recognised in further names: Cutsdean, Codeswellan, and Codesbyrig, some of which date to the 8th century. It has subsequently been noticed that Cod could derive philologically from a Brittonic female cognate Cuda, a hypothetical mother goddess in Celtic mythology postulated to have been worshipped in the Cotswold region.", "title": "History" }, { "paragraph_id": 7, "text": "The Cotswolds' spine runs southwest to northeast through six counties, particularly Gloucestershire, west Oxfordshire, and southwestern Warwickshire. The Cotswolds' northern and western edges are marked by steep escarpments down to the Severn valley and the Warwickshire Avon. This feature, known as the Cotswold escarpment or the Cotswold Edge, is a result of the uplifting (tilting) of the limestone layer, exposing its broken edge. This is a cuesta, in geological terms. The dip slope is to the southeast.", "title": "Geography" }, { "paragraph_id": 8, "text": "On the eastern boundary lies the city of Oxford and on the west is Stroud. To the southeast, the upper reaches of the Thames Valley and towns such as Lechlade, Tetbury, and Fairford are often considered to mark the limit of the region. To the south the Cotswolds, with the characteristic uplift of the Cotswold Edge, reach beyond Bath, and towns such as Chipping Sodbury and Marshfield share elements of Cotswold character.", "title": "Geography" }, { "paragraph_id": 9, "text": "The area is characterised by attractive small towns and villages built of the underlying Cotswold stone (a yellow oolitic limestone). This limestone is rich in fossils, particularly of fossilised sea urchins. Cotswold towns include Bourton-on-the-Water, Broadway, Chalford, Chipping Campden, Chipping Norton, Cricklade, Dursley, Malmesbury, Minchinhampton, Moreton-in-Marsh, Nailsworth, Northleach, Painswick, Stow-on-the-Wold, Stroud, Tetbury, Witney, Winchcombe and Wotton-under-Edge. In addition, much of Box lies in the Cotswolds. Bath, Cheltenham, Cirencester, Gloucester, Stroud, and Swindon are larger urban centres that border on, or are virtually surrounded by, the Cotswold AONB.", "title": "Geography" }, { "paragraph_id": 10, "text": "Chipping Campden is notable as the home of the Arts and Crafts movement, founded by William Morris at the end of the 19th and beginning of the 20th centuries. Morris lived occasionally in Broadway Tower, a folly, now part of a country park. Chipping Campden is also known for the annual Cotswold Olimpick Games, a celebration of sports and games dating to the early 17th century.", "title": "Geography" }, { "paragraph_id": 11, "text": "Of the Cotswolds' nearly 800 square miles (2,100 km), roughly 80 per cent is farmland. There are over 3,000 miles (4,800 km) of footpaths and bridleways, and 4,000 miles (6,400 km) of historic stone walls.", "title": "Geography" }, { "paragraph_id": 12, "text": "A 2017 report on employment within the Area of Outstanding Natural Beauty stated that the main sources of income were real estate, renting and business activities, manufacturing, and wholesale & retail trade repairs. Some 44% of residents were employed in these sectors. Agriculture is also important; 86% of the land in the AONB is used for this purpose. The primary crops include barley, beans, rape seed oil and wheat, while the raising of sheep is also important; cows and pigs are also reared. The livestock sector has been declining since 2002.", "title": "Economy" }, { "paragraph_id": 13, "text": "According to 2011 census data for the Cotswolds, the wholesale and retail trade was the largest employer (15.8% of the workforce), followed by education (9.7%) and health and social work (9.3%). The report also indicates that a relatively higher proportion of residents worked in agriculture, forestry and fishing, accommodation and food services, as well as in professional, scientific, and technical activities.", "title": "Economy" }, { "paragraph_id": 14, "text": "Unemployment in the Cotswold District was among the lowest in the country. An August 2017 report showed only 315 unemployed persons, a decrease of five from a year earlier.", "title": "Economy" }, { "paragraph_id": 15, "text": "Tourism is a significant part of the economy. The Cotswold District area gained over £373 million from visitor spending on accommodation, £157 million on local attractions and entertainments, and about £100m on travel in 2016. In the larger Cotswolds Tourism area, including Stroud, Cheltenham, Gloucester and Tewkesbury, tourism generated about £1 billion in 2016, providing 200,000 jobs. Some 38 million day visits were made to the Cotswold Tourism area that year.", "title": "Economy" }, { "paragraph_id": 16, "text": "Many travel guides direct tourists to Chipping Campden, Stow-on-the-Wold, Bourton-on-the-Water, Broadway, Bibury, and Stanton. Some of these locations can be very crowded at times. Roughly 300,000 people visit Bourton per year, for example, with about half staying for a day or less.", "title": "Economy" }, { "paragraph_id": 17, "text": "The area also has numerous public walking trails and footpaths that attract visitors, including the 93-mile (150 km) Cotswold Way (part of the National Trails system) from Bath to Chipping Campden.", "title": "Economy" }, { "paragraph_id": 18, "text": "In August 2018, the final decision was made for a Local Plan that would lead to the building of nearly 7,000 additional homes by 2031, in addition to over 3,000 already built. Areas for development include Cirencester, Bourton-on-the-Water, Down Ampney, Fairford, Kemble, Lechlade, Northleach, South Cerney, Stow-on-the-Wold, Tetbury and Moreton-in-Marsh. Some of the money received from developers will be earmarked for new infrastructure to support the increasing population.", "title": "Economy" }, { "paragraph_id": 19, "text": "Cotswold stone is a yellow oolitic Jurassic limestone. This limestone is rich in fossils, particularly of fossilised sea urchins. When weathered, the colour of buildings made or faced with this stone is often described as honey or golden.", "title": "Cotswold stone" }, { "paragraph_id": 20, "text": "The stone varies in colour from north to south, being honey-coloured in the north and northeast, as in villages such as Stanton and Broadway; golden-coloured in the central and southern areas, as in Dursley and Cirencester; and pearly white in Bath.", "title": "Cotswold stone" }, { "paragraph_id": 21, "text": "The rock outcrops at places on the Cotswold Edge; small quarries are common. The exposures are rarely sufficiently compact to be good for rock-climbing, but an exception is Castle Rock, on Cleeve Hill, near Cheltenham.", "title": "Cotswold stone" }, { "paragraph_id": 22, "text": "In his 1934 book English Journey, J. B. Priestley wrote of Cotswold buildings made of the local stone:", "title": "Cotswold stone" }, { "paragraph_id": 23, "text": "The truth is that it has no colour that can be described. Even when the sun is obscured and the light is cold, these walls are still faintly warm and luminous, as if they knew the trick of keeping the lost sunlight of centuries glimmering about them", "title": "Cotswold stone" }, { "paragraph_id": 24, "text": "The Cotswolds were designated as an Area of Outstanding Natural Beauty (AONB) in 1966, with an expansion on 21 December 1990 to 1,990 square kilometres (768 sq mi). In 1991, all AONBs were measured again using modern methods, and the official area of the Cotswolds AONB was increased to 2,038 square kilometres (787 sq mi). In 2000, the government confirmed that AONBs have the same landscape quality and status as National Parks.", "title": "Area of Outstanding Natural Beauty" }, { "paragraph_id": 25, "text": "The Cotswolds AONB, which is the largest in England and Wales, stretches from the border regions of South Warwickshire and Worcestershire, through West Oxfordshire and Gloucestershire, and takes in parts of Wiltshire and of Bath and North East Somerset in the south. Gloucestershire County Council is responsible for sixty-three per cent of the AONB.", "title": "Area of Outstanding Natural Beauty" }, { "paragraph_id": 26, "text": "The Cotswolds Conservation Board has the task of conserving and enhancing the AONB. Established under statute in 2004 as an independent public body, the Board carries out a range of work from securing funding for 'on the ground' conservation projects, to providing a strategic overview of the area for key decision makers, such as planning officials. The Board is funded by Natural England and the seventeen local authorities that are covered by the AONB. The Cotswolds AONB Management Plan 2018–2023 was adopted by the Board in September 2018.", "title": "Area of Outstanding Natural Beauty" }, { "paragraph_id": 27, "text": "The landscape of the AONB is varied, including escarpment outliers, escarpments, rolling hills and valleys, enclosed limestone valleys, settled valleys, ironstone hills and valleys, high wolds and high wold valleys, high wold dip-slopes, dip-slope lowland and valleys, a Low limestone plateau, cornbrash lowlands, farmed slopes, a broad floodplain valley, a large pastoral lowland vale, a settled unwooded vale, and an unwooded vale.", "title": "Area of Outstanding Natural Beauty" }, { "paragraph_id": 28, "text": "While the beauty of the Cotswolds AONB is intertwined with that of the villages that seem almost to grow out of the landscape, the Cotswolds were primarily designated an Area of Outstanding Natural Beauty for the rare limestone grassland habitats as well as the old growth beech woodlands that typify the area. These habitat areas are also the last refuge for many other flora and fauna, with some so endangered that they are protected under the Wildlife and Countryside Act 1981. Cleeve Hill, and its associated commons, is a fine example of a limestone grassland and it is one of the few locations where the Duke of Burgundy butterfly may still be found in abundance.", "title": "Area of Outstanding Natural Beauty" }, { "paragraph_id": 29, "text": "A June 2018 report stated that the AONB receives \"23 million visitors a year, the third largest of any protected landscape\". Earlier that year, Environment secretary Michael Gove announced that a panel would be formed to consider making some of the AONBs into National Parks. The review will file its report in 2019. In April 2018, the Cotswolds Conservation Board had written to Natural England \"requesting that consideration be given to making the Cotswolds a National Park\", according to Liz Eyre, Chairman. This has led to some concern; one member of the Cotswold District Council said, \"National Park designation is a significant step further and raises the prospect of key decision making powers being taken away from democratically elected councillors\". In other words, Cotswold District Council would no longer have the authority to grant and refuse housing applications.", "title": "Area of Outstanding Natural Beauty" }, { "paragraph_id": 30, "text": "Indicative of the Cotswolds' uniqueness and value is that five European Special Areas of Conservation, three national nature reserves and more than 80 Sites of Special Scientific Interest are within the Cotswolds AONB.", "title": "Area of Outstanding Natural Beauty" }, { "paragraph_id": 31, "text": "The Cotswold Voluntary Wardens Service was established in 1968 to help conserve and enhance the area, and now has more than 300 wardens.", "title": "Area of Outstanding Natural Beauty" }, { "paragraph_id": 32, "text": "The Cotswold Way is a long-distance footpath, just over 100 miles (160 km) long, running the length of the AONB, mainly on the edge of the Cotswold escarpment with views over the Severn Valley and the Vale of Evesham.", "title": "Area of Outstanding Natural Beauty" }, { "paragraph_id": 33, "text": "In September 2020, the Cotswolds AONB rebranded itself as the \"Cotswolds National Landscape\", using a proposed name replacement for \"Areas of Outstanding Natural Beauty\", until all AONBs in England and Wales adopted \"National Landscape\" in 2023.", "title": "Area of Outstanding Natural Beauty" }, { "paragraph_id": 34, "text": "Pictured is the Garden of Sudeley Castle at Winchcombe. The present structure was built in the 15th century and may be on the site of a 12th-century castle. It is north of the spa town of Cheltenham, which has much Georgian architecture. Further south, towards Tetbury, is the fortress known as Beverston Castle, founded in 1229 by Maurice de Gaunt. In the same area is Calcot Manor, a manor house with origins in about 1300 as a tithe barn.", "title": "Places of interest" }, { "paragraph_id": 35, "text": "Tetbury Market House was built in 1655. During the Middle Ages, Tetbury became an important market for Cotswold wool and yarn. Chavenage House is an Elizabethan-era manor house 1.5 miles (2.4 km) northwest of Tetbury. Chedworth Roman Villa, where several mosaic floors are on display, is near the Roman road known as the Fosse Way, 8 miles (13 km) north of the town of Corinium Dobunnorum (Cirencester). Cirencester Abbey was founded as an Augustinian monastery in 1117, and Malmesbury Abbey was one of the few English houses with a continual history from the 7th century through to the Dissolution of the Monasteries.", "title": "Places of interest" }, { "paragraph_id": 36, "text": "An unusual house in this area is Quarwood, a Victorian Gothic house in Stow-on-the-Wold. The grounds, covering 42 acres (17 ha), include parkland, fish ponds, paddocks, garages, woodlands and seven cottages. Another is Woodchester Mansion, an unfinished, Gothic revival mansion house in Woodchester Park near Nympsfield. Newark Park is a Grade I listed country house of Tudor origins near the village of Ozleworth, Wotton-under-Edge. The house sits in an estate of 700 acres (300 ha) at the Cotswold escarpment's southern end.", "title": "Places of interest" }, { "paragraph_id": 37, "text": "Another of the many manor houses in the area, Owlpen Manor in the village of Owlpen in the Stroud district, is also Tudor and Grade I listed. Further north, Broadway Tower is a folly on Broadway Hill, near the village of Broadway, Worcestershire. To the south of the Cotswolds is Corsham Court, a country house in a park designed by Capability Brown in the town of Corsham, 3 miles (5 km) west of Chippenham, Wiltshire.", "title": "Places of interest" }, { "paragraph_id": 38, "text": "According to users of the worldwide TripAdvisor travel site, in 2018 the following were among the best attractions in the Cotswolds:", "title": "Places of interest" }, { "paragraph_id": 39, "text": "The Cotswolds lie between the M5, M40 and M4 motorways. The main A-roads through the area are:", "title": "Transport" }, { "paragraph_id": 40, "text": "These all roughly follow the routes of ancient roads, some laid down by the Romans, such as Ermin Way and the Fosse Way.", "title": "Transport" }, { "paragraph_id": 41, "text": "There are local bus services across the area, but some are infrequent.", "title": "Transport" }, { "paragraph_id": 42, "text": "The River Thames flows from the Cotswolds and is navigable from Inglesham and Lechlade-on-Thames downstream to Oxford. West of Inglesham. the Thames and Severn Canal and the Stroudwater Navigation connected the Thames to the River Severn; this route is mostly disused nowadays but several parts are in the process of being restored.", "title": "Transport" }, { "paragraph_id": 43, "text": "The area is bounded by two major rail routes: in the south by the main Bristol–Bath–London line (including the South Wales main line) and in the west by the Bristol–Birmingham main line. In addition, the Cotswold line runs through the Cotswolds from Oxford to Worcester, and the Golden Valley line runs across the hills from Swindon via Stroud to Gloucester, carrying fast and local services.", "title": "Transport" }, { "paragraph_id": 44, "text": "Mainline rail services to the big cities run from railway stations such as Bath, Swindon, Oxford, Cheltenham, and Worcester. Mainline trains run by Great Western Railway to London Paddington also are available from Kemble station near Cirencester, Kingham station near Stow-on-the-Wold, Charlbury station, and Moreton-in-Marsh station.", "title": "Transport" }, { "paragraph_id": 45, "text": "Additionally, there is the Gloucestershire Warwickshire Railway, a steam heritage railway over part of the closed Stratford–Cheltenham line, running from Cheltenham Racecourse through Gotherington, Winchcombe, and Hayles Abbey Halt to Toddington and Laverton. The preserved line has been extended to Broadway.", "title": "Transport" }, { "paragraph_id": 46, "text": "The population of the Cotswold local authority area in the 2021 census was 90,800, an increase of 9.6% from 82,900 in 2011. The percentage of usual residents in relationships, aged 16 and above, were:", "title": "Demographics" }, { "paragraph_id": 47, "text": "In 2021, 96.3% of people in Cotswold identified their ethnic group with the \"White\" category, a slight decrease from 97.8% in 2011. Over 1.3% identified as \"Asian\" or British Asian, 1.5% chose \"Mixed or Multiple\" category, 0.4% were \"Black, Black British, Caribbean or African\" and 0.4% chose \"Other\".", "title": "Demographics" }, { "paragraph_id": 48, "text": "The Cotswold region has inspired several notable English composers. In the early 1900s, Herbert Howells and Ivor Gurney took long walks together over the hills, and Gurney urged Howells to make the landscape, including the nearby Malvern Hills, the inspiration for future work. In 1916, Howells wrote his first major piece, the Piano Quartet in A minor, inspired by the magnificent view of the Malverns; he dedicated it to \"the hill at Chosen (Churchdown) and Ivor Gurney who knows it\". Another contemporary of theirs, Gerald Finzi, lived in nearby Painswick.", "title": "In culture" }, { "paragraph_id": 49, "text": "Gustav Holst, who was born in Cheltenham, spent much of his early years playing the organ in Cotswold village churches, including at Cranham, after which he titled his tune for In the Bleak Midwinter. He also called his Symphony in F major, Op. 8, H47, The Cotswolds.", "title": "In culture" }, { "paragraph_id": 50, "text": "Holst's friend Ralph Vaughan Williams was born at Down Ampney in the Cotswolds and, though he moved to Surrey as a boy, gave the name of his native village to the tune for Come Down, O Love Divine. His opera Hugh the Drover depicts life in a Cotswold village and incorporates local folk melodies. In 1988, the 6th symphony (Op. 109) of composer Derek Bourgeois was titled A Cotswold Symphony.", "title": "In culture" }, { "paragraph_id": 51, "text": "The Cotswolds are a popular location for scenes in movies and television programmes. The 2008 film Better Things, directed by Duane Hopkins, is set in a small Cotswold village. The fictional detective Agatha Raisin lives in the fictional Cotswold village of Carsely.", "title": "In culture" }, { "paragraph_id": 52, "text": "Other movies filmed in the Cotswolds or nearby, at least in part, include some of the Harry Potter series (Gloucester Cathedral), Bridget Jones's Diary (Snowshill), Pride and Prejudice (Cheltenham Town Hall), and Braveheart (Cotswold Farm Park). In 2014, some scenes of the 2016 movie Alice Through the Looking Glass were filmed at the Gloucester Docks just outside the Cotswold District; some scenes in the 2006 movie Amazing Grace were also filmed at the Docks.", "title": "In culture" }, { "paragraph_id": 53, "text": "The television series Father Brown is set and primarily filmed in the Cotswolds. Scenes and buildings in Sudeley Castle was often featured in the series. The vicarage in Blockley was used for the main character's residence and the Anglican St Peter and St Paul church was the Roman Catholic St Mary's in the series. Other filming locations included Guiting Power, the former hospital in Moreton-in-Marsh, the Winchcombe railway station, Lower Slaughter, and St Peter's Church in Upper Slaughter.", "title": "In culture" }, { "paragraph_id": 54, "text": "In the 2010s BBC TV series Poldark, the location for Ross Poldark's family home, Trenwith, is Chavenage House, Tetbury, which is open to the public.", "title": "In culture" }, { "paragraph_id": 55, "text": "Many exterior shots of village life in the Downton Abbey TV series were filmed in Bampton, Oxfordshire. Other filming locations in that county included Swinbrook, Cogges, and Shilton.", "title": "In culture" }, { "paragraph_id": 56, "text": "The city of Bath hosted crews that filmed parts of the movies Vanity Fair, Persuasion, Dracula, and The Duchess. Gloucester and other places in Gloucestershire, some within the Area of Natural Beauty, have been a popular location for filming period films and television programmes over the years. Gloucester Cathedral has been particularly popular.", "title": "In culture" }, { "paragraph_id": 57, "text": "The sighting of peregrine falcons in the landscape of the Cotswolds is mentioned in The Peregrine by John Alec Baker.", "title": "In culture" }, { "paragraph_id": 58, "text": "The television documentary agriculture-themed series Clarkson's Farm was filmed at various locations around Chipping Norton.", "title": "In culture" } ]	The Cotswolds is a region in central-southwest England, along a range of rolling hills that rise from the meadows of the upper River Thames to an escarpment above the Severn Valley and Evesham Vale. The area is defined by the bedrock of Jurassic limestone that creates a type of grassland habitat rare in the UK and that is quarried for the golden-coloured Cotswold stone. The predominantly rural landscape contains stone-built villages, towns, and stately homes and gardens featuring the local stone. Designated as an Area of Outstanding Natural Beauty (AONB) in 1966, the Cotswolds covers 787 square miles (2,038 km2), making it the largest AONB. It is England's third-largest protected landscape, after the Lake District and Yorkshire Dales national parks. Its boundaries are roughly 25 miles (40 km) across and 90 miles (140 km) long, stretching south-west from just south of Stratford-upon-Avon to just south of Bath, near Radstock. It lies across the boundaries of several English counties; mainly Gloucestershire and Oxfordshire, and parts of Wiltshire, Somerset, Worcestershire, and Warwickshire. The region's highest point is Cleeve Hill at 1,083 ft (330 m), just east of Cheltenham. The hills give their name to the Cotswold local government district, formed on 1 April 1974, within the county of Gloucestershire. Its main town is Cirencester, where the Cotswold District Council offices are. As of 2021, the population of the 450-square-mile (1,200 km2) district was about 91,000. The much larger area referred to as the Cotswolds encompasses nearly 800 square miles (2,100 km2). The population of the Area of Outstanding Natural Beauty was 139,000 in 2016.	2001-10-26T13:59:10Z	2023-11-27T23:38:27Z	[ "Template:Use dmy dates", "Template:Convert", "Template:Cite web", "Template:Webarchive", "Template:AONBs in England", "Template:Short description", "Template:IPAc-en", "Template:Reflist", "Template:Authority control", "Template:Geographic location", "Template:Redirect", "Template:Infobox protected area", "Template:Respell", "Template:Wide image", "Template:EB1911 poster", "Template:Use British English", "Template:Cite news", "Template:Cite book", "Template:Sister project links" ]	https://en.wikipedia.org/wiki/Cotswolds
6,903	AC ChievoVerona	Associazione Calcio ChievoVerona, commonly referred to as ChievoVerona or simply Chievo [ˈkjeːvo], is a former professional Italian football club named after and based in Chievo, a suburb of 4,500 inhabitants in Verona, Veneto, and owned by Paluani, a bakery product company and the inspiration for their original name, Paluani Chievo. During its years as a professional club, Chievo shared the 38,402 seater Stadio Marcantonio Bentegodi stadium with its cross-town rivals Hellas Verona. In 2021, the club was excluded from professional football because of financial problems. The team was founded in 1929 by a small number of football fans from Chievo, a Verona frazione. Initially the club was not officially affiliated to the Italian Football Federation (FIGC), but nonetheless played several amateur tournament and friendly matches under the denomination O.N.D. Chievo, a title imposed by the fascist regime. The club's formal debut in an official league was on 8 November 1931. The team colours at the time were blue and white. Chievo disbanded in 1936, however, due to economic woes but returned to play in 1948 after World War II, being registered in the regional league of Seconda Divisione (Second Division). In 1957, the team moved to the field "Carlantonio Bottagisio", where they played until 1986. In 1959, after the restructuring of the football leagues, Chievo was admitted to play the Seconda Categoria (Second Category), a regional league placed next-to-last in the Italian football pyramid. That year, Chievo changed its name to Cardi Chievo, after a new sponsor, and was quickly promoted to the Prima Categoria, from which it experienced its first-ever relegation in 1962. In 1964, Luigi Campedelli, a businessman and owner of the Paluani company, was named new Chievo chairman. Under Campedelli's presidency, Chievo climbed through the entire Italian football pyramid, reaching the Serie D after the 1974–75 season. Under the name "Paluani Chievo", the team was promoted to Serie C2 in 1986. As a consequence of promotion, Chievo was forced to move to the Stadio Marcantonio Bentegodi, the main venue in Verona; another promotion, to Serie C1, followed in 1989. In 1990, the team changed its name to its current one, "A.C. ChievoVerona." In 1992, President Luigi Campedelli, who had returned at the helm of the club two years before, died of a heart attack, and his son Luca Campedelli, aged just 23, became the new and youngest chairman of an Italian professional football club. Campedelli promoted Giovanni Sartori to director of football and named Alberto Malesani as the new head coach. Under Malesani, the team astonishingly won the Serie C1 and was promoted to Serie B, where city rival Hellas Verona was playing at the time. In 1997, after Malesani signed for Fiorentina, Silvio Baldini was appointed the new head coach. The following season, with Domenico Caso as the coach, saw the first dismissal of a coach during the presidency of Luca Campedelli, with Caso being fired and replaced with Lorenzo Balestro. It was during these years that the nickname "mussi volanti" ("flying donkeys") was born. It originated from supporters of their crosstown rivals Hellas, who would mock long-suffering Chievo supporters that Chievo will only be promoted if "donkeys could fly" (equivalent of the English language falsism "if pigs could fly", denoting an impossible dream). In 2000–01, Luigi Delneri was signed as coach and led Chievo, by virtue of its third-place finish in Serie B, to promotion to Serie A, the first time in team history that it had reached the top tier of Italian football. In 2001–02, Chievo's Serie A debut season, the team was most critics' choice for an instant return to Serie B. However, they became the surprise team in the league, playing often spectacular and entertaining football and even leading the league for six consecutive weeks. The club finally ended the season with a highly respectable fifth-place finish, qualifying the team to play in the UEFA Cup. Chievo's impressive performance inspired a 2002 book about soccer economics titled "Fenomeno Chievo. Economia, costume, società" by Marco Vitale. In 2002–03, Chievo debuted at the European level but were eliminated in the first round by Red Star Belgrade. The team finished the Serie A season in seventh place, again proving itself one of the better Serie A teams. The 2003–04 season, the last with Delneri at the helm, saw Chievo finish ninth. The 2004–05 season is remembered as one of the toughest ever in Chievo's history. Mario Beretta, a Serie A novice from Ternana, was named coach, but after a strong start that brought Chievo to third behind Juventus and Milan, the team slowly lost position in the league table. With three matches remaining in the season, Chievo was third-from-last, a position which would see it relegated to Serie B. As a last resort, Beretta was fired and Maurizio D'Angelo, a former Chievo player, was appointed temporarily to replace him as coach. Morale improved, and two wins and a draw from the final three matches proved just enough to keep Chievo in Serie A. In 2005–06, Giuseppe Pillon of Treviso FBC was appointed as new coach. The team experienced a return to the successful Delneri era, both in style of play and results, which resulted in Chievo ending the season in seventh and gaining a berth in the UEFA Cup. However, because of the football scandal involving several top-class teams, all of which finished higher than Chievo in the 2005–06 season, the Flying Donkeys were awarded a place in the next Champions League preliminary phase. On 14 July 2006, the verdict in the scandal was made public. Juventus, Milan and Fiorentina, who had all originally qualified for the 2006–07 Champions League, and Lazio, who had originally qualified for the 2006–07 UEFA Cup, were all banned from UEFA competition for the 2006–07 season, although Milan were allowed to enter the Champions League after their appeal to the FIGC. Chievo took up a place in the third qualifying stage of the competition along with Milan and faced Bulgarian side Levski Sofia. Chievo lost the first leg 2–0 in Sofia and managed a 2–2 home draw on the second leg and were eliminated by a 4–2 aggregate score with Levski advancing to the Champions League group stage. As a Champions League third round qualifying loser, Chievo was given a place in the UEFA Cup final qualifying round. On 25 August 2006, they were drawn to face Portuguese side Braga. The first leg, played on 14 September in Braga, ended in a 2–0 win for the Portuguese. The return match, played on 28 September in Verona, although won by Chievo 2–1, resulted in a 3–2 aggregate loss and the club's elimination from the competition. On 16 October 2006, following a 1–0 defeat against Torino, head coach Giuseppe Pillon was fired, and replaced by Luigi Delneri, one of the original symbols of the miracle Chievo, who had led the club to the Serie A in 2002. On 27 May 2007, the last match day of the 2006–07 Serie A season, Chievo was one of five teams in danger of falling into the last undecided relegation spot. Needing only a draw against Catania, a direct competitor in the relegation battle, Chievo lost 2–0 playing on a neutral field in Bologna. Wins by Parma, Siena and Reggina condemned Chievo to Serie B for the 2007–08 season after six seasons in the top flight. Even as a relatively-successful Serie A team the club, which averages only 9,000 to 10,000 fans and is kept afloat mainly by money from television rights, does not have the same number of fan supporters as Hellas, the oldest team in Verona. The difference between the clubs' supporters' number was highlighted during local derby games played in season 2001–02 at the clubs' shared stadium when, for Chievo's "home" fixtures, the Chievo fans were located in the "away" end of the stadium (the area of the stadium Chievo's supporters for years claimed as "theirs", in fact the main supporters faction's name is "North Side", the side of the stadium usually assigned to away teams' supporters), while most of the rest of the stadium seats were assigned to Hellas supporters. Chievo bounced back quickly from the disappointment of their relegation on the last matchday of 2006–07, going in search of an immediate promotion back to the top flight. After the expected departure of several top-quality players including Franco Semioli, Salvatore Lanna, Matteo Brighi, Paolo Sammarco and Erjon Bogdani, the manager Delneri also parted ways with the club. Giuseppe Iachini replaced him and the captain, Lorenzo D'Anna, gave way to Sergio Pellissier at the end of the transfer window. A new squad was constructed, most notably including the arrivals of midfielders Maurizio Ciaramitaro and Simone Bentivoglio, defender César and forward Antimo Iunco. This new incarnation of the gialloblu were crowned winter champions (along with Bologna), en route to a 41st matchday promotion after a 1–1 draw at Grosseto left them four points clear of third-place Lecce with one match remaining. In addition to winning promotion, they were conferred with the Ali della Vittoria trophy on the final matchday of the season, their first league title of any kind in 14 years. In their first season back to the top flight, Chievo immediately struggled in the league resulting in the dismissal of Iachini in November and his replacement with former Parma boss Domenico Di Carlo. After Di Carlo's appointment, Chievo managed a remarkable resurgence that led the gialloblu out of the relegation zone after having collected just nine points from their first 17 matches. Highlight matches included a 3–0 defeat of Lazio (who then won the 2008–09 Coppa Italia title) at the Stadio Olimpico, and a thrilling 3–3 draw away to Juventus in which captain and longtime Chievo striker Sergio Pellissier scored a late equaliser to complete his first career hat-trick. A series of hard-fought draws against top clubs Roma, Internazionale and Genoa in the final stretch of the season solidified Ceo's position outside the drop zone and Serie A status was finally confirmed on matchday 37 with a home draw against Bologna. A largely unchanged line-up earned safety the following season with four matchdays to spare, and Chievo is therefore a part of the inaugural Lega Calcio Serie A in 2010–11, their third consecutive season (and ninth season in the last ten years) in the top flight of Italian football. Lorenzo D'Anna remained as coach of the club for the 2018–19 season after replacing Rolando Maran during the 2017–18 season. On 13 September, Chievo were deducted 3 points after being found guilty of false accounting on exchanging players with Cesena. President Luca Campedelli was banned for three months as a result of the scheme. Chievo were officially relegated on 14 April 2019 after a 3–1 home loss to Napoli. In July 2021, Chievo was expelled from Serie B for the 2021–22 season for being unable to prove its financial viability due to outstanding tax payments. The club argued that there was an agreement in place during the COVID-19 pandemic that allowed them to spread the payments out over a longer period. However, after three unsuccessful appeals, the decision to bar Chievo Verona from registering to Serie B was upheld, with Cosenza taking their place in Serie B. Over the next month, former captain Sergio Pellissier led the search for a new ownership group to allow a phoenix club to compete in Serie D under the Chievo name. However, on 21 August, Pellissier announced in an Instagram post that no owners were found in time for the Serie D registration deadline. The original Chievo club has in the meantime appealed to the Council of State against its exclusion and is currently registered in no division, albeit still with the right to apply for a spot in an amateur league of Veneto in the following weeks. Campedelli eventually opted to keep the club alive as a youth team for the 2021–22 season, while Pellissier decided instead to found a new club himself, which was admitted to Terza Categoria at the very bottom of the Italian football league system; the club, originally named FC Chievo 2021, was then renamed to FC Clivense following a legal warning from AC ChievoVerona. FC Clivense eventually won Group B of the Terza Categoria Verona 2021–22, ending up promoted in Seconda Categoria. On 13 July 2022, FC Clivense registered for the 2022–23 season of Eccellenza, the 5th tier of Italian football, where they would eventually gain promotion in Serie D Note: this list includes players that have reached international status. The club's original colours were blue and white and not the current blue and yellow. The club's historic nickname is Gialloblu (from the club colours of yellow and blue), although throughout Italian football, the Verona's team recognised in the past by most fans as Gialloblu are Hellas Verona, Chievo's main rivals. Local supporters often call the club simply Ceo, which is Venetian for Chievo. The club is now sometimes referred to as the I Mussi Volanti ("The Flying Donkeys" in the Verona dialect of Venetian). "The Flying Donkeys" nickname was originally used by fans from crosstown rivals Hellas to mock Chievo. The two clubs first met in Serie B in the mid-1990s, with Hellas chanting Quando i mussi volara, il Ceo in Serie A – "Donkeys will fly before Chievo are in Serie A." However, once Chievo earned promotion to Serie A at the end of the 2000–01 Serie B season, Chievo fans started to call themselves "The Flying Donkeys". The current club crest represents Cangrande I della Scala, a medieval lord of Verona. Stadio Marcantonio Bentegodi is a stadium in Verona, Italy. It is also the home of Chievo Verona city rival Hellas.	[ { "paragraph_id": 0, "text": "Associazione Calcio ChievoVerona, commonly referred to as ChievoVerona or simply Chievo [ˈkjeːvo], is a former professional Italian football club named after and based in Chievo, a suburb of 4,500 inhabitants in Verona, Veneto, and owned by Paluani, a bakery product company and the inspiration for their original name, Paluani Chievo. During its years as a professional club, Chievo shared the 38,402 seater Stadio Marcantonio Bentegodi stadium with its cross-town rivals Hellas Verona.", "title": "" }, { "paragraph_id": 1, "text": "In 2021, the club was excluded from professional football because of financial problems.", "title": "" }, { "paragraph_id": 2, "text": "The team was founded in 1929 by a small number of football fans from Chievo, a Verona frazione. Initially the club was not officially affiliated to the Italian Football Federation (FIGC), but nonetheless played several amateur tournament and friendly matches under the denomination O.N.D. Chievo, a title imposed by the fascist regime. The club's formal debut in an official league was on 8 November 1931. The team colours at the time were blue and white. Chievo disbanded in 1936, however, due to economic woes but returned to play in 1948 after World War II, being registered in the regional league of Seconda Divisione (Second Division). In 1957, the team moved to the field \"Carlantonio Bottagisio\", where they played until 1986. In 1959, after the restructuring of the football leagues, Chievo was admitted to play the Seconda Categoria (Second Category), a regional league placed next-to-last in the Italian football pyramid. That year, Chievo changed its name to Cardi Chievo, after a new sponsor, and was quickly promoted to the Prima Categoria, from which it experienced its first-ever relegation in 1962.", "title": "History" }, { "paragraph_id": 3, "text": "In 1964, Luigi Campedelli, a businessman and owner of the Paluani company, was named new Chievo chairman. Under Campedelli's presidency, Chievo climbed through the entire Italian football pyramid, reaching the Serie D after the 1974–75 season. Under the name \"Paluani Chievo\", the team was promoted to Serie C2 in 1986. As a consequence of promotion, Chievo was forced to move to the Stadio Marcantonio Bentegodi, the main venue in Verona; another promotion, to Serie C1, followed in 1989. In 1990, the team changed its name to its current one, \"A.C. ChievoVerona.\"", "title": "History" }, { "paragraph_id": 4, "text": "In 1992, President Luigi Campedelli, who had returned at the helm of the club two years before, died of a heart attack, and his son Luca Campedelli, aged just 23, became the new and youngest chairman of an Italian professional football club. Campedelli promoted Giovanni Sartori to director of football and named Alberto Malesani as the new head coach. Under Malesani, the team astonishingly won the Serie C1 and was promoted to Serie B, where city rival Hellas Verona was playing at the time. In 1997, after Malesani signed for Fiorentina, Silvio Baldini was appointed the new head coach. The following season, with Domenico Caso as the coach, saw the first dismissal of a coach during the presidency of Luca Campedelli, with Caso being fired and replaced with Lorenzo Balestro. It was during these years that the nickname \"mussi volanti\" (\"flying donkeys\") was born. It originated from supporters of their crosstown rivals Hellas, who would mock long-suffering Chievo supporters that Chievo will only be promoted if \"donkeys could fly\" (equivalent of the English language falsism \"if pigs could fly\", denoting an impossible dream).", "title": "History" }, { "paragraph_id": 5, "text": "In 2000–01, Luigi Delneri was signed as coach and led Chievo, by virtue of its third-place finish in Serie B, to promotion to Serie A, the first time in team history that it had reached the top tier of Italian football.", "title": "History" }, { "paragraph_id": 6, "text": "In 2001–02, Chievo's Serie A debut season, the team was most critics' choice for an instant return to Serie B. However, they became the surprise team in the league, playing often spectacular and entertaining football and even leading the league for six consecutive weeks. The club finally ended the season with a highly respectable fifth-place finish, qualifying the team to play in the UEFA Cup. Chievo's impressive performance inspired a 2002 book about soccer economics titled \"Fenomeno Chievo. Economia, costume, società\" by Marco Vitale.", "title": "History" }, { "paragraph_id": 7, "text": "In 2002–03, Chievo debuted at the European level but were eliminated in the first round by Red Star Belgrade. The team finished the Serie A season in seventh place, again proving itself one of the better Serie A teams. The 2003–04 season, the last with Delneri at the helm, saw Chievo finish ninth.", "title": "History" }, { "paragraph_id": 8, "text": "The 2004–05 season is remembered as one of the toughest ever in Chievo's history. Mario Beretta, a Serie A novice from Ternana, was named coach, but after a strong start that brought Chievo to third behind Juventus and Milan, the team slowly lost position in the league table. With three matches remaining in the season, Chievo was third-from-last, a position which would see it relegated to Serie B. As a last resort, Beretta was fired and Maurizio D'Angelo, a former Chievo player, was appointed temporarily to replace him as coach. Morale improved, and two wins and a draw from the final three matches proved just enough to keep Chievo in Serie A.", "title": "History" }, { "paragraph_id": 9, "text": "In 2005–06, Giuseppe Pillon of Treviso FBC was appointed as new coach. The team experienced a return to the successful Delneri era, both in style of play and results, which resulted in Chievo ending the season in seventh and gaining a berth in the UEFA Cup. However, because of the football scandal involving several top-class teams, all of which finished higher than Chievo in the 2005–06 season, the Flying Donkeys were awarded a place in the next Champions League preliminary phase.", "title": "History" }, { "paragraph_id": 10, "text": "On 14 July 2006, the verdict in the scandal was made public. Juventus, Milan and Fiorentina, who had all originally qualified for the 2006–07 Champions League, and Lazio, who had originally qualified for the 2006–07 UEFA Cup, were all banned from UEFA competition for the 2006–07 season, although Milan were allowed to enter the Champions League after their appeal to the FIGC. Chievo took up a place in the third qualifying stage of the competition along with Milan and faced Bulgarian side Levski Sofia. Chievo lost the first leg 2–0 in Sofia and managed a 2–2 home draw on the second leg and were eliminated by a 4–2 aggregate score with Levski advancing to the Champions League group stage. As a Champions League third round qualifying loser, Chievo was given a place in the UEFA Cup final qualifying round. On 25 August 2006, they were drawn to face Portuguese side Braga. The first leg, played on 14 September in Braga, ended in a 2–0 win for the Portuguese. The return match, played on 28 September in Verona, although won by Chievo 2–1, resulted in a 3–2 aggregate loss and the club's elimination from the competition.", "title": "History" }, { "paragraph_id": 11, "text": "On 16 October 2006, following a 1–0 defeat against Torino, head coach Giuseppe Pillon was fired, and replaced by Luigi Delneri, one of the original symbols of the miracle Chievo, who had led the club to the Serie A in 2002.", "title": "History" }, { "paragraph_id": 12, "text": "On 27 May 2007, the last match day of the 2006–07 Serie A season, Chievo was one of five teams in danger of falling into the last undecided relegation spot. Needing only a draw against Catania, a direct competitor in the relegation battle, Chievo lost 2–0 playing on a neutral field in Bologna. Wins by Parma, Siena and Reggina condemned Chievo to Serie B for the 2007–08 season after six seasons in the top flight.", "title": "History" }, { "paragraph_id": 13, "text": "Even as a relatively-successful Serie A team the club, which averages only 9,000 to 10,000 fans and is kept afloat mainly by money from television rights, does not have the same number of fan supporters as Hellas, the oldest team in Verona. The difference between the clubs' supporters' number was highlighted during local derby games played in season 2001–02 at the clubs' shared stadium when, for Chievo's \"home\" fixtures, the Chievo fans were located in the \"away\" end of the stadium (the area of the stadium Chievo's supporters for years claimed as \"theirs\", in fact the main supporters faction's name is \"North Side\", the side of the stadium usually assigned to away teams' supporters), while most of the rest of the stadium seats were assigned to Hellas supporters.", "title": "History" }, { "paragraph_id": 14, "text": "Chievo bounced back quickly from the disappointment of their relegation on the last matchday of 2006–07, going in search of an immediate promotion back to the top flight. After the expected departure of several top-quality players including Franco Semioli, Salvatore Lanna, Matteo Brighi, Paolo Sammarco and Erjon Bogdani, the manager Delneri also parted ways with the club. Giuseppe Iachini replaced him and the captain, Lorenzo D'Anna, gave way to Sergio Pellissier at the end of the transfer window. A new squad was constructed, most notably including the arrivals of midfielders Maurizio Ciaramitaro and Simone Bentivoglio, defender César and forward Antimo Iunco. This new incarnation of the gialloblu were crowned winter champions (along with Bologna), en route to a 41st matchday promotion after a 1–1 draw at Grosseto left them four points clear of third-place Lecce with one match remaining. In addition to winning promotion, they were conferred with the Ali della Vittoria trophy on the final matchday of the season, their first league title of any kind in 14 years.", "title": "History" }, { "paragraph_id": 15, "text": "In their first season back to the top flight, Chievo immediately struggled in the league resulting in the dismissal of Iachini in November and his replacement with former Parma boss Domenico Di Carlo. After Di Carlo's appointment, Chievo managed a remarkable resurgence that led the gialloblu out of the relegation zone after having collected just nine points from their first 17 matches. Highlight matches included a 3–0 defeat of Lazio (who then won the 2008–09 Coppa Italia title) at the Stadio Olimpico, and a thrilling 3–3 draw away to Juventus in which captain and longtime Chievo striker Sergio Pellissier scored a late equaliser to complete his first career hat-trick. A series of hard-fought draws against top clubs Roma, Internazionale and Genoa in the final stretch of the season solidified Ceo's position outside the drop zone and Serie A status was finally confirmed on matchday 37 with a home draw against Bologna. A largely unchanged line-up earned safety the following season with four matchdays to spare, and Chievo is therefore a part of the inaugural Lega Calcio Serie A in 2010–11, their third consecutive season (and ninth season in the last ten years) in the top flight of Italian football.", "title": "History" }, { "paragraph_id": 16, "text": "Lorenzo D'Anna remained as coach of the club for the 2018–19 season after replacing Rolando Maran during the 2017–18 season. On 13 September, Chievo were deducted 3 points after being found guilty of false accounting on exchanging players with Cesena. President Luca Campedelli was banned for three months as a result of the scheme. Chievo were officially relegated on 14 April 2019 after a 3–1 home loss to Napoli.", "title": "History" }, { "paragraph_id": 17, "text": "In July 2021, Chievo was expelled from Serie B for the 2021–22 season for being unable to prove its financial viability due to outstanding tax payments. The club argued that there was an agreement in place during the COVID-19 pandemic that allowed them to spread the payments out over a longer period. However, after three unsuccessful appeals, the decision to bar Chievo Verona from registering to Serie B was upheld, with Cosenza taking their place in Serie B.", "title": "History" }, { "paragraph_id": 18, "text": "Over the next month, former captain Sergio Pellissier led the search for a new ownership group to allow a phoenix club to compete in Serie D under the Chievo name. However, on 21 August, Pellissier announced in an Instagram post that no owners were found in time for the Serie D registration deadline. The original Chievo club has in the meantime appealed to the Council of State against its exclusion and is currently registered in no division, albeit still with the right to apply for a spot in an amateur league of Veneto in the following weeks. Campedelli eventually opted to keep the club alive as a youth team for the 2021–22 season, while Pellissier decided instead to found a new club himself, which was admitted to Terza Categoria at the very bottom of the Italian football league system; the club, originally named FC Chievo 2021, was then renamed to FC Clivense following a legal warning from AC ChievoVerona.", "title": "History" }, { "paragraph_id": 19, "text": "FC Clivense eventually won Group B of the Terza Categoria Verona 2021–22, ending up promoted in Seconda Categoria. On 13 July 2022, FC Clivense registered for the 2022–23 season of Eccellenza, the 5th tier of Italian football, where they would eventually gain promotion in Serie D", "title": "History" }, { "paragraph_id": 20, "text": "Note: this list includes players that have reached international status.", "title": "Notable players" }, { "paragraph_id": 21, "text": "", "title": "Notable players" }, { "paragraph_id": 22, "text": "The club's original colours were blue and white and not the current blue and yellow. The club's historic nickname is Gialloblu (from the club colours of yellow and blue), although throughout Italian football, the Verona's team recognised in the past by most fans as Gialloblu are Hellas Verona, Chievo's main rivals. Local supporters often call the club simply Ceo, which is Venetian for Chievo. The club is now sometimes referred to as the I Mussi Volanti (\"The Flying Donkeys\" in the Verona dialect of Venetian). \"The Flying Donkeys\" nickname was originally used by fans from crosstown rivals Hellas to mock Chievo. The two clubs first met in Serie B in the mid-1990s, with Hellas chanting Quando i mussi volara, il Ceo in Serie A – \"Donkeys will fly before Chievo are in Serie A.\" However, once Chievo earned promotion to Serie A at the end of the 2000–01 Serie B season, Chievo fans started to call themselves \"The Flying Donkeys\".", "title": "Colours and badge" }, { "paragraph_id": 23, "text": "The current club crest represents Cangrande I della Scala, a medieval lord of Verona.", "title": "Colours and badge" }, { "paragraph_id": 24, "text": "Stadio Marcantonio Bentegodi is a stadium in Verona, Italy. It is also the home of Chievo Verona city rival Hellas.", "title": "Stadium" } ]	Associazione Calcio ChievoVerona, commonly referred to as ChievoVerona or simply Chievo, is a former professional Italian football club named after and based in Chievo, a suburb of 4,500 inhabitants in Verona, Veneto, and owned by Paluani, a bakery product company and the inspiration for their original name, Paluani Chievo. During its years as a professional club, Chievo shared the 38,402 seater Stadio Marcantonio Bentegodi stadium with its cross-town rivals Hellas Verona. In 2021, the club was excluded from professional football because of financial problems.	2001-10-26T11:03:44Z	2023-12-22T14:38:27Z	[ "Template:Webarchive", "Template:Authority control", "Template:Short description", "Template:Use dmy dates", "Template:Reflist", "Template:Infobox football club", "Template:More citations needed section", "Template:Lang", "Template:Cite web", "Template:Cite book", "Template:Chievo Verona", "Template:Serie A", "Template:Serie B", "Template:EngvarB", "Template:IPA-it", "Template:Div col", "Template:Serie C", "Template:Columns-list", "Template:Cite news", "Template:Cite instagram", "Template:Commons category", "Template:Citation needed", "Template:Flagicon", "Template:Div col end" ]	https://en.wikipedia.org/wiki/AC_ChievoVerona
6,904	Context switch	In computing, a context switch is the process of storing the state of a process or thread, so that it can be restored and resume execution at a later point, and then restoring a different, previously saved, state. This allows multiple processes to share a single central processing unit (CPU), and is an essential feature of a multiprogramming or multitasking operating system. In a traditional CPU, each process - a program in execution - utilizes the various CPU registers to store data and hold the current state of the running process. However, in a multitasking operating system, the operating system and knowing the correct switches inserting the ends sometimes to multiple directions between processes or threads to allow the execution of multiple processes simultaneously. For every switch, the operating system must save the state of the currently running process, followed by loading the next process state, which will run on the CPU. This sequence of operations that stores the state of the running process and the loading of the following running process is called a context switch. The precise meaning of the phrase "context switch" varies. In a multitasking context, it refers to the process of creating the correct dialog systems state for one task, so that the task can be paused and another task resumed. A context switch can also occur as the result of an interrupted, such as when a task needs to access program storage, freeing up CPU time for other tasks. Some operating systems also require a context switch to move between user log and kernel mode tasks. The process of context switching can have a negative impact on system performance if you do not have the exact program to incude other user log. Context switches are usually computationally intensive, and much of the design of operating systems is to optimize the use of context switches. Switching from one process to another requires a certain amount of time for doing the administration – saving and loading registers and memory maps, updating various tables and lists, etc. What is actually involved in a context switch depends on the architectures, operating systems, and the number of resources shared (threads that belong to the same process share many resources compared to unrelated non-cooperating processes). For example, in the Linux kernel, context switching involves loading the corresponding process control block (PCB) stored in the PCB table in the kernel stack to retrieve information about the state of the new process. CPU state information including the registers, stack pointer, and program counter as well as memory management information like segmentation tables and page tables (unless the old process shares the memory with the new) are loaded from the PCB for the new process. To avoid incorrect address translation in the case of the previous and current processes using different memory, the translation lookaside buffer (TLB) must be flushed. This negatively affects performance because every memory reference to the TLB will be a miss because it is empty after most context switches. Furthermore, analogous context switching happens between user threads, notably green threads, and is often very lightweight, saving and restoring minimal context. In extreme cases, such as switching between goroutines in Go, a context switch is equivalent to a coroutine yield, which is only marginally more expensive than a subroutine call. There are three potential triggers for a context switch: Most commonly, within some scheduling scheme, one process must be switched out of the CPU so another process can run. This context switch can be triggered by the process making itself unrunnable, such as by waiting for an I/O or synchronization operation to complete. On a pre-emptive multitasking system, the scheduler may also switch out processes that are still runnable. To prevent other processes from being starved of CPU time, pre-emptive schedulers often configure a timer interrupt to fire when a process exceeds its time slice. This interrupt ensures that the scheduler will gain control to perform a context switch. Modern architectures are interrupt driven. This means that if the CPU requests data from a disk, for example, it does not need to busy-wait until the read is over; it can issue the request (to the I/O device) and continue with some other task. When the read is over, the CPU can be interrupted (by a hardware in this case, which sends interrupt request to PIC) and presented with the read. For interrupts, a program called an interrupt handler is installed, and it is the interrupt handler that handles the interrupt from the disk. When an interrupt occurs, the hardware automatically switches a part of the context (at least enough to allow the handler to return to the interrupted code). The handler may save additional context, depending on details of the particular hardware and software designs. Often only a minimal part of the context is changed in order to minimize the amount of time spent handling the interrupt. The kernel does not spawn or schedule a special process to handle interrupts, but instead the handler executes in the (often partial) context established at the beginning of interrupt handling. Once interrupt servicing is complete, the context in effect before the interrupt occurred is restored so that the interrupted process can resume execution in its proper state. When the system transitions between user mode and kernel mode, a context switch is not necessary; a mode transition is not by itself a context switch. However, depending on the operating system, a context switch may also take place at this time. The state of the currently executing process must be saved so it can be restored when rescheduled for execution. The process state includes all the registers that the process may be using, especially the program counter, plus any other operating system specific data that may be necessary. This is usually stored in a data structure called a process control block (PCB) or switchframe. The PCB might be stored on a per-process stack in kernel memory (as opposed to the user-mode call stack), or there may be some specific operating system-defined data structure for this information. A handle to the PCB is added to a queue of processes that are ready to run, often called the ready queue. Since the operating system has effectively suspended the execution of one process, it can then switch context by choosing a process from the ready queue and restoring its PCB. In doing so, the program counter from the PCB is loaded, and thus execution can continue in the chosen process. Process and thread priority can influence which process is chosen from the ready queue (i.e., it may be a priority queue). Considering a general arithmetic addition operation A = B+1. The instruction is stored in the instruction register and the program counter is incremented. A and B are read from memory and are stored in registers R1, R2 respectively. In this case, B+1 is calculated and written in R1 as the final answer. This operation as there are sequential reads and writes and there's no waits for function calls used, hence no context switch/wait takes place in this case. However, certain special instructions require system calls that require context switch to wait/sleep processes. A system call handler is used for context switch to kernel mode. A display(data x) function may require data x from the Disk and a device driver in kernel mode, hence the display() function goes to sleep and waits on the READ operation to get the value of x from the disk, causing the program to wait and a wait for function call to the released setting the current statement to go to sleep and wait for the syscall to wake it up. To maintain concurrency however the program needs to re-execute the new value and the sleeping process together again. Context switching itself has a cost in performance, due to running the task scheduler, TLB flushes, and indirectly due to sharing the CPU cache between multiple tasks. Switching between threads of a single process can be faster than between two separate processes, because threads share the same virtual memory maps, so a TLB flush is not necessary. The time to switch between two separate processes is called the process switching latency. The time to switch between two threads of the same process is called the thread switching latency. The time from when a hardware interrupt is generated to when the interrupt is serviced is called the interrupt latency. Switching between two processes in a single address space operating system can be faster than switching between two processes in an operating system with private per-process address spaces. Context switching can be performed primarily by software or hardware. Some processors, like the Intel 80386 and its successors, have hardware support for context switches, by making use of a special data segment designated the task state segment (TSS). A task switch can be explicitly triggered with a CALL or JMP instruction targeted at a TSS descriptor in the global descriptor table. It can occur implicitly when an interrupt or exception is triggered if there's a task gate in the interrupt descriptor table (IDT). When a task switch occurs the CPU can automatically load the new state from the TSS. As with other tasks performed in hardware, one would expect this to be rather fast; however, mainstream operating systems, including Windows and Linux, do not use this feature. This is mainly due to two reasons:	[ { "paragraph_id": 0, "text": "In computing, a context switch is the process of storing the state of a process or thread, so that it can be restored and resume execution at a later point, and then restoring a different, previously saved, state. This allows multiple processes to share a single central processing unit (CPU), and is an essential feature of a multiprogramming or multitasking operating system. In a traditional CPU, each process - a program in execution - utilizes the various CPU registers to store data and hold the current state of the running process. However, in a multitasking operating system, the operating system and knowing the correct switches inserting the ends sometimes to multiple directions between processes or threads to allow the execution of multiple processes simultaneously. For every switch, the operating system must save the state of the currently running process, followed by loading the next process state, which will run on the CPU. This sequence of operations that stores the state of the running process and the loading of the following running process is called a context switch.", "title": "" }, { "paragraph_id": 1, "text": "The precise meaning of the phrase \"context switch\" varies. In a multitasking context, it refers to the process of creating the correct dialog systems state for one task, so that the task can be paused and another task resumed. A context switch can also occur as the result of an interrupted, such as when a task needs to access program storage, freeing up CPU time for other tasks. Some operating systems also require a context switch to move between user log and kernel mode tasks. The process of context switching can have a negative impact on system performance if you do not have the exact program to incude other user log.", "title": "" }, { "paragraph_id": 2, "text": "Context switches are usually computationally intensive, and much of the design of operating systems is to optimize the use of context switches. Switching from one process to another requires a certain amount of time for doing the administration – saving and loading registers and memory maps, updating various tables and lists, etc. What is actually involved in a context switch depends on the architectures, operating systems, and the number of resources shared (threads that belong to the same process share many resources compared to unrelated non-cooperating processes).", "title": "Cost" }, { "paragraph_id": 3, "text": "For example, in the Linux kernel, context switching involves loading the corresponding process control block (PCB) stored in the PCB table in the kernel stack to retrieve information about the state of the new process. CPU state information including the registers, stack pointer, and program counter as well as memory management information like segmentation tables and page tables (unless the old process shares the memory with the new) are loaded from the PCB for the new process. To avoid incorrect address translation in the case of the previous and current processes using different memory, the translation lookaside buffer (TLB) must be flushed. This negatively affects performance because every memory reference to the TLB will be a miss because it is empty after most context switches.", "title": "Cost" }, { "paragraph_id": 4, "text": "Furthermore, analogous context switching happens between user threads, notably green threads, and is often very lightweight, saving and restoring minimal context. In extreme cases, such as switching between goroutines in Go, a context switch is equivalent to a coroutine yield, which is only marginally more expensive than a subroutine call.", "title": "Cost" }, { "paragraph_id": 5, "text": "There are three potential triggers for a context switch:", "title": "Switching cases" }, { "paragraph_id": 6, "text": "Most commonly, within some scheduling scheme, one process must be switched out of the CPU so another process can run. This context switch can be triggered by the process making itself unrunnable, such as by waiting for an I/O or synchronization operation to complete. On a pre-emptive multitasking system, the scheduler may also switch out processes that are still runnable. To prevent other processes from being starved of CPU time, pre-emptive schedulers often configure a timer interrupt to fire when a process exceeds its time slice. This interrupt ensures that the scheduler will gain control to perform a context switch.", "title": "Switching cases" }, { "paragraph_id": 7, "text": "Modern architectures are interrupt driven. This means that if the CPU requests data from a disk, for example, it does not need to busy-wait until the read is over; it can issue the request (to the I/O device) and continue with some other task. When the read is over, the CPU can be interrupted (by a hardware in this case, which sends interrupt request to PIC) and presented with the read. For interrupts, a program called an interrupt handler is installed, and it is the interrupt handler that handles the interrupt from the disk.", "title": "Switching cases" }, { "paragraph_id": 8, "text": "When an interrupt occurs, the hardware automatically switches a part of the context (at least enough to allow the handler to return to the interrupted code). The handler may save additional context, depending on details of the particular hardware and software designs. Often only a minimal part of the context is changed in order to minimize the amount of time spent handling the interrupt. The kernel does not spawn or schedule a special process to handle interrupts, but instead the handler executes in the (often partial) context established at the beginning of interrupt handling. Once interrupt servicing is complete, the context in effect before the interrupt occurred is restored so that the interrupted process can resume execution in its proper state.", "title": "Switching cases" }, { "paragraph_id": 9, "text": "When the system transitions between user mode and kernel mode, a context switch is not necessary; a mode transition is not by itself a context switch. However, depending on the operating system, a context switch may also take place at this time.", "title": "Switching cases" }, { "paragraph_id": 10, "text": "The state of the currently executing process must be saved so it can be restored when rescheduled for execution.", "title": "Steps" }, { "paragraph_id": 11, "text": "The process state includes all the registers that the process may be using, especially the program counter, plus any other operating system specific data that may be necessary. This is usually stored in a data structure called a process control block (PCB) or switchframe.", "title": "Steps" }, { "paragraph_id": 12, "text": "The PCB might be stored on a per-process stack in kernel memory (as opposed to the user-mode call stack), or there may be some specific operating system-defined data structure for this information. A handle to the PCB is added to a queue of processes that are ready to run, often called the ready queue.", "title": "Steps" }, { "paragraph_id": 13, "text": "Since the operating system has effectively suspended the execution of one process, it can then switch context by choosing a process from the ready queue and restoring its PCB. In doing so, the program counter from the PCB is loaded, and thus execution can continue in the chosen process. Process and thread priority can influence which process is chosen from the ready queue (i.e., it may be a priority queue).", "title": "Steps" }, { "paragraph_id": 14, "text": "Considering a general arithmetic addition operation A = B+1. The instruction is stored in the instruction register and the program counter is incremented. A and B are read from memory and are stored in registers R1, R2 respectively. In this case, B+1 is calculated and written in R1 as the final answer. This operation as there are sequential reads and writes and there's no waits for function calls used, hence no context switch/wait takes place in this case.", "title": "Example" }, { "paragraph_id": 15, "text": "However, certain special instructions require system calls that require context switch to wait/sleep processes. A system call handler is used for context switch to kernel mode. A display(data x) function may require data x from the Disk and a device driver in kernel mode, hence the display() function goes to sleep and waits on the READ operation to get the value of x from the disk, causing the program to wait and a wait for function call to the released setting the current statement to go to sleep and wait for the syscall to wake it up. To maintain concurrency however the program needs to re-execute the new value and the sleeping process together again.", "title": "Example" }, { "paragraph_id": 16, "text": "Context switching itself has a cost in performance, due to running the task scheduler, TLB flushes, and indirectly due to sharing the CPU cache between multiple tasks. Switching between threads of a single process can be faster than between two separate processes, because threads share the same virtual memory maps, so a TLB flush is not necessary.", "title": "Performance" }, { "paragraph_id": 17, "text": "The time to switch between two separate processes is called the process switching latency. The time to switch between two threads of the same process is called the thread switching latency. The time from when a hardware interrupt is generated to when the interrupt is serviced is called the interrupt latency.", "title": "Performance" }, { "paragraph_id": 18, "text": "Switching between two processes in a single address space operating system can be faster than switching between two processes in an operating system with private per-process address spaces.", "title": "Performance" }, { "paragraph_id": 19, "text": "Context switching can be performed primarily by software or hardware. Some processors, like the Intel 80386 and its successors, have hardware support for context switches, by making use of a special data segment designated the task state segment (TSS). A task switch can be explicitly triggered with a CALL or JMP instruction targeted at a TSS descriptor in the global descriptor table. It can occur implicitly when an interrupt or exception is triggered if there's a task gate in the interrupt descriptor table (IDT). When a task switch occurs the CPU can automatically load the new state from the TSS.", "title": "Performance" }, { "paragraph_id": 20, "text": "As with other tasks performed in hardware, one would expect this to be rather fast; however, mainstream operating systems, including Windows and Linux, do not use this feature. This is mainly due to two reasons:", "title": "Performance" } ]	In computing, a context switch is the process of storing the state of a process or thread, so that it can be restored and resume execution at a later point, and then restoring a different, previously saved, state. This allows multiple processes to share a single central processing unit (CPU), and is an essential feature of a multiprogramming or multitasking operating system. In a traditional CPU, each process - a program in execution - utilizes the various CPU registers to store data and hold the current state of the running process. However, in a multitasking operating system, the operating system and knowing the correct switches inserting the ends sometimes to multiple directions between processes or threads to allow the execution of multiple processes simultaneously. For every switch, the operating system must save the state of the currently running process, followed by loading the next process state, which will run on the CPU. This sequence of operations that stores the state of the running process and the loading of the following running process is called a context switch. The precise meaning of the phrase "context switch" varies. In a multitasking context, it refers to the process of creating the correct dialog systems state for one task, so that the task can be paused and another task resumed. A context switch can also occur as the result of an interrupted, such as when a task needs to access program storage, freeing up CPU time for other tasks. Some operating systems also require a context switch to move between user log and kernel mode tasks. The process of context switching can have a negative impact on system performance if you do not have the exact program to incude other user log.	2001-10-26T12:05:01Z	2023-10-19T08:22:49Z	[ "Template:Snd", "Template:Operating systems", "Template:Cite news", "Template:Short description", "Template:About", "Template:Rp", "Template:Anchor", "Template:Reflist", "Template:Cite book", "Template:Cite conference", "Template:Doi", "Template:Cite web" ]	https://en.wikipedia.org/wiki/Context_switch
6,905	Carnatic	Carnatic most often refers to: Carnatic may also refer to:	[ { "paragraph_id": 0, "text": "Carnatic most often refers to:", "title": "" }, { "paragraph_id": 1, "text": "Carnatic may also refer to:", "title": "" } ]	Carnatic most often refers to: Carnatic region, Southern India Carnatic music, the classical music of Southern India Carnatic may also refer to: Carnatic Wars, a series of military conflicts in India during the 18th century HMIS Carnatic (J199), a Bangor-class minesweeper of the Royal Indian Navy, that served in World War II HMS Carnatic (1783), a 74-gun third rate ship of the line of the Royal Navy, launched at Deptford in 1783 HMS Carnatic (1823), a 74-gun third rate ship of the line of the Royal Navy, launched at Portsmouth Dockyard in 1823 Carnatic (ship), one of several vessels of that name Carnatic Hall, now closed university residence	2001-10-26T13:49:58Z	2023-08-18T03:03:06Z	[ "Template:Wikt", "Template:Ship", "Template:Disambiguation" ]	https://en.wikipedia.org/wiki/Carnatic
6,907	Chakra	Chakras (UK: /ˈtʃʌkrəz/, US: /ˈtʃɑːkrəz/ CHUK-rəz, CHAH-krəz; Sanskrit: चक्र, romanized: cakra, lit. 'wheel, circle'; Pali: cakka) are various focal points used in a variety of ancient meditation practices, collectively denominated as Tantra, or the esoteric or inner traditions of Hinduism and Buddhism. The concept of the chakra arose in the early traditions of Hinduism. Beliefs differ between the Indian religions, with many Buddhist texts consistently mentioning five chakras, while Hindu sources reference six or seven. Early Sanskrit texts speak of them both as meditative visualizations combining flowers and mantras and as physical entities in the body. Within Kundalini yoga, the techniques of breathing exercises, visualizations, mudras, bandhas, kriyas, and mantras are focused on manipulating the flow of subtle energy through chakras. The modern Western chakra system arose from multiple sources, starting in the 1880s with H. P. Blavatsky and other Theosophists, followed by Sir John Woodroffe's 1919 book The Serpent Power, and Charles W. Leadbeater's 1927 book The Chakras. Psychological and other attributes, rainbow colours, and a wide range of supposed correspondences with other systems such as alchemy, astrology, gemstones, homeopathy, Kabbalah and Tarot were added later. Lexically, chakra is the Indic reflex of an ancestral Indo-European form *kʷékʷlos, whence also "wheel" and "cycle" (Ancient Greek: κύκλος, romanized: kýklos). It has both literal and metaphorical uses, as in the "wheel of time" or "wheel of dharma", such as in Rigveda hymn verse 1.164.11, pervasive in the earliest Vedic texts. In Buddhism, especially in Theravada, the Pali noun cakka connotes "wheel". Within the central "Tripitaka", the Buddha variously refers the "dhammacakka", or "wheel of dharma", connoting that this dharma, universal in its advocacy, should bear the marks characteristic of any temporal dispensation. The Buddha spoke of freedom from cycles in and of themselves, whether karmic, reincarnative, liberative, cognitive or emotional. In Jainism, the term chakra also means "wheel" and appears in various contexts in its ancient literature. As in other Indian religions, chakra in esoteric theories in Jainism such as those by Buddhisagarsuri means a yogic energy center. The word chakra appears to first emerge within the Vedas, though not in the sense of psychic energy centers, rather as chakravartin or the king who "turns the wheel of his empire" in all directions from a center, representing his influence and power. The iconography popular in representing the Chakras, states the scholar David Gordon White, traces back to the five symbols of yajna, the Vedic fire altar: "square, circle, triangle, half moon and dumpling". The hymn 10.136 of the Rigveda mentions a renunciate yogi with a female named kunamnama. Literally, it means "she who is bent, coiled", representing both a minor goddess and one of many embedded enigmas and esoteric riddles within the Rigveda. Some scholars, such as D.G. White and Georg Feuerstein, have suggested that she may be a reference to kundalini shakti and a precursor to the terminology associated with the chakras in later tantric traditions. Breath channels (nāḍi) are mentioned in the classical Upanishads of Hinduism from the 1st millennium BCE, but not psychic-energy chakra theories. Three classical Nadis are Ida, Pingala and Sushumna in which the central channel Sushumna is said to be foremost as per Kṣurikā-Upaniṣhad. The latter, states David Gordon White, were introduced about 8th-century CE in Buddhist texts as hierarchies of inner energy centers, such as in the Hevajra Tantra and Caryāgiti. These are called by various terms such as cakka, padma (lotus) or pitha (mound). These medieval Buddhist texts mention only four chakras, while later Hindu texts such as the Kubjikāmata and Kaulajñānanirnaya expanded the list to many more. In contrast to White, according to Feuerstein, early Upanishads of Hinduism do mention chakras in the sense of "psychospiritual vortices", along with other terms found in tantra: prana or vayu (life energy) along with nadi (energy carrying arteries). According to Gavin Flood, the ancient texts do not present chakra and kundalini-style yoga theories although these words appear in the earliest Vedic literature in many contexts. The chakra in the sense of four or more vital energy centers appear in the medieval era Hindu and Buddhist texts. Chakra and divine energies Shining, she holds the noose made of the energy of will, the hook which is energy of knowledge, the bow and arrows made of energy of action. Split into support and supported, divided into eight, bearer of weapons, arising from the chakra with eight points, she has the ninefold chakra as a throne. —Yoginihrdaya 53–54(Translator: Andre Padoux) The Chakras are part of esoteric ideas and concepts about physiology and psychic centers that emerged across Indian traditions. The belief held that human life simultaneously exists in two parallel dimensions, one "physical body" (sthula sarira) and other "psychological, emotional, mind, non-physical" it is called the "subtle body" (sukshma sarira). This subtle body is energy, while the physical body is mass. The psyche or mind plane corresponds to and interacts with the body plane, and the belief holds that the body and the mind mutually affect each other. The subtle body consists of nadi (energy channels) connected by nodes of psychic energy called chakra. The belief grew into extensive elaboration, with some suggesting 88,000 chakras throughout the subtle body. The number of major chakras varied between various traditions, but they typically ranged between four and seven. Nyingmapa Vajrayana Buddhist teachings mention eight chakras and there is a complete yogic system for each of them. The important chakras are stated in Hindu and Buddhist texts to be arranged in a column along the spinal cord, from its base to the top of the head, connected by vertical channels. The tantric traditions sought to master them, awaken and energize them through various breathing exercises or with assistance of a teacher. These chakras were also symbolically mapped to specific human physiological capacity, seed syllables (bija), sounds, subtle elements (tanmatra), in some cases deities, colors and other motifs. Belief in the chakra system of Hinduism and Buddhism differs from the historic Chinese system of meridians in acupuncture. Unlike the latter, the chakra relates to subtle body, wherein it has a position but no definite nervous node or precise physical connection. The tantric systems envision it as continually present, highly relevant and a means to psychic and emotional energy. It is useful in a type of yogic rituals and meditative discovery of radiant inner energy (prana flows) and mind-body connections. The meditation is aided by extensive symbology, mantras, diagrams, models (deity and mandala). The practitioner proceeds step by step from perceptible models, to increasingly abstract models where deity and external mandala are abandoned, inner self and internal mandalas are awakened. These ideas are not unique to Hindu and Buddhist traditions. Similar and overlapping concepts emerged in other cultures in the East and the West, and these are variously called by other names such as subtle body, spirit body, esoteric anatomy, sidereal body and etheric body. According to Geoffrey Samuel and Jay Johnston, professors of Religious studies known for their studies on Yoga and esoteric traditions: Ideas and practices involving so-called 'subtle bodies' have existed for many centuries in many parts of the world. (...) Virtually all human cultures known to us have some kind of concept of mind, spirit or soul as distinct from the physical body, if only to explain experiences such as sleep and dreaming. (...) An important subset of subtle-body practices, found particularly in Indian and Tibetan Tantric traditions, and in similar Chinese practices, involves the idea of an internal 'subtle physiology' of the body (or rather of the body-mind complex) made up of channels through which substances of some kind flow, and points of intersection at which these channels come together. In the Indian tradition the channels are known as nadi and the points of intersection as cakra. Chakra and related beliefs have been important to the esoteric traditions, but they are not directly related to mainstream yoga. According to the Indologist Edwin Bryant and other scholars, the goals of classical yoga such as spiritual liberation (freedom, self-knowledge, moksha) is "attained entirely differently in classical yoga, and the cakra / nadi / kundalini physiology is completely peripheral to it." There is no consensus in Hinduism about the number of chakras because the concept of chakras has been evolved and interpreted differently by various sects, schools of thought, and spiritual traditions within Hinduism over the centuries. While some traditions follow the seven main chakra system, others recognize additional chakras or a different number of chakras. The lack of a universally accepted standard has led to variation and diversity in the interpretation and understanding of chakras within Hinduism. There are several sects within Hinduism that have their own unique interpretations and understandings of the concept of chakras. Here are some of the major sects that have different perspectives on chakras: The classical eastern traditions, particularly those that developed in India during the 1st millennium AD, primarily describe nadi and chakra in a "subtle body" context. To them, they are in same dimension as of the psyche-mind reality that is invisible yet real. In the nadi and cakra flow the prana (breath, life energy). The concept of "life energy" varies between the texts, ranging from simple inhalation-exhalation to far more complex association with breath-mind-emotions-sexual energy. This prana or essence is what vanishes when a person dies, leaving a gross body. Some of this concept states this subtle body is what withdraws within, when one sleeps. All of it is believed to be reachable, awake-able and important for an individual's body-mind health, and how one relates to other people in one's life. This subtle body network of nadi and chakra is, according to some later Indian theories and many new age speculations, closely associated with emotions. Esoteric traditions in Hinduism mention numerous numbers and arrangements of chakras, of which a classical system of six-plus-one, the last being the Sahasrara, is most prevalent. This seven-part system, central to the core texts of hatha yoga, is one among many systems found in Hindu tantric literature. Hindu Tantra associates six Yoginis with six places in the subtle body, corresponding to the six chakras of the six-plus-one system. The Chakra methodology is extensively developed in the goddess tradition of Hinduism called Shaktism. It is an important concept along with yantras, mandalas and kundalini yoga in its practice. Chakra in Shakta tantrism means circle, an "energy center" within, as well as being a term for group rituals such as in chakra-puja (worship within a circle) which may or may not involve tantra practice. The cakra-based system is a part of the meditative exercises that came to be known as yoga. The esoteric traditions in Buddhism generally teach four chakras. In some early Buddhist sources, these chakras are identified as: manipura (navel), anahata (heart), vishuddha (throat) and ushnisha kamala (crown). In one development within the Nyingma lineage of the Mantrayana of Tibetan Buddhism a popular conceptualization of chakras in increasing subtlety and increasing order is as follows: Nirmanakaya (gross self), Sambhogakaya (subtle self), Dharmakaya (causal self), and Mahasukhakaya (non-dual self), each vaguely and indirectly corresponding to the categories within the Shaiva Mantramarga universe, i.e., Svadhisthana, Anahata, Visuddha, Sahasrara, etc. However, depending on the meditational tradition, these vary between three and six. The chakras are considered psycho-spiritual constituents, each bearing meaningful correspondences to cosmic processes and their postulated Buddha counterpart. A system of five chakras is common among the Mother class of Tantras and these five chakras along with their correspondences are: Chakras clearly play a key role in Tibetan Buddhism, and are considered to be the pivotal providence of Tantric thinking. And, the precise use of the chakras across the gamut of tantric sadhanas gives little space to doubt the primary efficacy of Tibetan Buddhism as distinct religious agency, that being that precise revelation that, without Tantra there would be no Chakras, but more importantly, without Chakras, there is no Tibetan Buddhism. The highest practices in Tibetan Buddhism point to the ability to bring the subtle pranas of an entity into alignment with the central channel, and to thus penetrate the realisation of the ultimate unity, namely, the "organic harmony" of one's individual consciousness of Wisdom with the co-attainment of All-embracing Love, thus synthesizing a direct cognition of absolute Buddhahood. According to Samuel, the buddhist esoteric systems developed cakra and nadi as "central to their soteriological process". The theories were sometimes, but not always, coupled with a unique system of physical exercises, called yantra yoga or 'phrul 'khor. Chakras, according to the Bon tradition, enable the gestalt of experience, with each of the five major chakras, being psychologically linked with the five experiential qualities of unenlightened consciousness, the six realms of woe. The tsa lung practice embodied in the Trul khor lineage, unbaffles the primary channels, thus activating and circulating liberating prana. Yoga awakens the deep mind, thus bringing forth positive attributes, inherent gestalts, and virtuous qualities. In a computer analogy, the screen of one's consciousness is slated and an attribute-bearing file is called up that contains necessary positive or negative, supportive qualities. Tantric practice is said to eventually transform all experience into clear light. The practice aims to liberate from all negative conditioning, and the deep cognitive salvation of freedom from control and unity of perception and cognition. The more common and most studied chakra system incorporates six major chakras along with a seventh center generally not regarded as a chakra. These points are arranged vertically along the axial channel (sushumna nadi in Hindu texts, Avadhuti in some Buddhist texts). According to Gavin Flood, this system of six chakras plus the sahasrara "center" at the crown first appears in the Kubjikāmata-tantra, an 11th-century Kaula work. It was this chakra system that was translated in the early 20th century by Sir John Woodroffe (also called Arthur Avalon) in the text The Serpent Power. Avalon translated the Hindu text Ṣaṭ-Cakra-Nirūpaṇa meaning the examination (nirūpaṇa) of the seven (ṣaṭ) chakras (cakra). The Chakras are traditionally considered meditation aids. The yogi progresses from lower chakras to the highest chakra blossoming in the crown of the head, internalizing the journey of spiritual ascent. In both the Hindu kundalini and Buddhist candali traditions, the chakras are pierced by a dormant energy residing near or in the lowest chakra. In Hindu texts she is known as Kundalini, while in Buddhist texts she is called Candali or Tummo (Tibetan: gtum mo, "fierce one"). Below are the common new age description of these six chakras and the seventh point known as sahasrara. This new age version incorporates the Newtonian colors of the rainbow not found in any ancient Indian system. Kurt Leland, for the Theosophical Society in America, concluded that the western chakra system was produced by an "unintentional collaboration" of many groups of people: esotericists and clairvoyants, often theosophical; Indologists; the scholar of myth, Joseph Campbell; the founders of the Esalen Institute and the psychological tradition of Carl Jung; the colour system of Charles W. Leadbeater's 1927 book The Chakras, treated as traditional lore by some modern Indian yogis; and energy healers such as Barbara Brennan. Leland states that far from being traditional, the two main elements of the modern system, the rainbow colours and the list of qualities, first appeared together only in 1977. The concept of a set of seven chakras came to the West in the 1880s; at that time each chakra was associated with a nerve plexus. In 1918, Sir John Woodroffe, alias Arthur Avalon, translated two Indian texts, the Ṣaṭ-Cakra-Nirūpaṇa and the Pādukā-Pañcaka, and in his book The Serpent Power drew Western attention to the seven chakra theory. In the 1920s, each of the seven chakras was associated with an endocrine gland, a tradition that has persisted. More recently, the lower six chakras have been linked to both nerve plexuses and glands. The seven rainbow colours were added by Leadbeater in 1927; a variant system in the 1930s proposed six colours plus white. Leadbeater's theory was influenced by Johann Georg Gichtel's 1696 book Theosophia Practica, which mentioned inner "force centres". Psychological and other attributes such as layers of the aura, developmental stages, associated diseases, Aristotelian elements, emotions, and states of consciousness were added still later. A wide range of supposed correspondences such as with alchemical metals, astrological signs and planets, foods, herbs, gemstones, homeopathic remedies, Kabbalistic spheres, musical notes, totem animals, and Tarot cards have also been proposed. In Anatomy of the Spirit (1996), Caroline Myss described the function of chakras as follows: "Every thought and experience you've ever had in your life gets filtered through these chakra databases. Each event is recorded into your cells...". The chakras are described as being aligned in an ascending column from the base of the spine to the top of the head. New Age practices often associate each chakra with a certain colour. In various traditions, chakras are associated with multiple physiological functions, an aspect of consciousness, a classical element, and other distinguishing characteristics; these do not correspond to those used in ancient Indian systems. The chakras are visualised as lotuses or flowers with a different number of petals in every chakra. The chakras are thought to vitalise the physical body and to be associated with interactions of a physical, emotional and mental nature. They are considered loci of life energy or prana (which New Age belief equates with shakti, qi in Chinese, ki in Japanese, koach-ha-guf in Hebrew, bios in Greek, and aether in both Greek and English), which is thought to flow among them along pathways called nadi. The function of the chakras is to spin and draw in this energy to keep the spiritual, mental, emotional and physical health of the body in balance. Rudolf Steiner considered the chakra system to be dynamic and evolving. He suggested that this system has become different for modern people than it was in ancient times and that it will, in turn, be radically different in future times. Steiner described a sequence of development that begins with the upper chakras and moves down, rather than moving in the opposite direction. He gave suggestions on how to develop the chakras through disciplining thoughts, feelings, and will. According to Florin Lowndes, a "spiritual student" can further develop and deepen or elevate thinking consciousness when taking the step from the "ancient path" of schooling to the "new path" represented by Steiner's The Philosophy of Freedom. The not-for-profit Edinburgh Skeptics Society states that despite their popularity, "there has never been any evidence for these meridian lines or chakras". It adds that while practitioners sometimes cite "scientific evidence" for their claims, such evidence is often "incredibly shaky".	[ { "paragraph_id": 0, "text": "Chakras (UK: /ˈtʃʌkrəz/, US: /ˈtʃɑːkrəz/ CHUK-rəz, CHAH-krəz; Sanskrit: चक्र, romanized: cakra, lit. 'wheel, circle'; Pali: cakka) are various focal points used in a variety of ancient meditation practices, collectively denominated as Tantra, or the esoteric or inner traditions of Hinduism and Buddhism.", "title": "" }, { "paragraph_id": 1, "text": "The concept of the chakra arose in the early traditions of Hinduism. Beliefs differ between the Indian religions, with many Buddhist texts consistently mentioning five chakras, while Hindu sources reference six or seven. Early Sanskrit texts speak of them both as meditative visualizations combining flowers and mantras and as physical entities in the body. Within Kundalini yoga, the techniques of breathing exercises, visualizations, mudras, bandhas, kriyas, and mantras are focused on manipulating the flow of subtle energy through chakras.", "title": "" }, { "paragraph_id": 2, "text": "The modern Western chakra system arose from multiple sources, starting in the 1880s with H. P. Blavatsky and other Theosophists, followed by Sir John Woodroffe's 1919 book The Serpent Power, and Charles W. Leadbeater's 1927 book The Chakras. Psychological and other attributes, rainbow colours, and a wide range of supposed correspondences with other systems such as alchemy, astrology, gemstones, homeopathy, Kabbalah and Tarot were added later.", "title": "" }, { "paragraph_id": 3, "text": "Lexically, chakra is the Indic reflex of an ancestral Indo-European form *kʷékʷlos, whence also \"wheel\" and \"cycle\" (Ancient Greek: κύκλος, romanized: kýklos). It has both literal and metaphorical uses, as in the \"wheel of time\" or \"wheel of dharma\", such as in Rigveda hymn verse 1.164.11, pervasive in the earliest Vedic texts.", "title": "Etymology" }, { "paragraph_id": 4, "text": "In Buddhism, especially in Theravada, the Pali noun cakka connotes \"wheel\". Within the central \"Tripitaka\", the Buddha variously refers the \"dhammacakka\", or \"wheel of dharma\", connoting that this dharma, universal in its advocacy, should bear the marks characteristic of any temporal dispensation. The Buddha spoke of freedom from cycles in and of themselves, whether karmic, reincarnative, liberative, cognitive or emotional.", "title": "Etymology" }, { "paragraph_id": 5, "text": "In Jainism, the term chakra also means \"wheel\" and appears in various contexts in its ancient literature. As in other Indian religions, chakra in esoteric theories in Jainism such as those by Buddhisagarsuri means a yogic energy center.", "title": "Etymology" }, { "paragraph_id": 6, "text": "The word chakra appears to first emerge within the Vedas, though not in the sense of psychic energy centers, rather as chakravartin or the king who \"turns the wheel of his empire\" in all directions from a center, representing his influence and power. The iconography popular in representing the Chakras, states the scholar David Gordon White, traces back to the five symbols of yajna, the Vedic fire altar: \"square, circle, triangle, half moon and dumpling\".", "title": "Ancient history" }, { "paragraph_id": 7, "text": "The hymn 10.136 of the Rigveda mentions a renunciate yogi with a female named kunamnama. Literally, it means \"she who is bent, coiled\", representing both a minor goddess and one of many embedded enigmas and esoteric riddles within the Rigveda. Some scholars, such as D.G. White and Georg Feuerstein, have suggested that she may be a reference to kundalini shakti and a precursor to the terminology associated with the chakras in later tantric traditions.", "title": "Ancient history" }, { "paragraph_id": 8, "text": "Breath channels (nāḍi) are mentioned in the classical Upanishads of Hinduism from the 1st millennium BCE, but not psychic-energy chakra theories. Three classical Nadis are Ida, Pingala and Sushumna in which the central channel Sushumna is said to be foremost as per Kṣurikā-Upaniṣhad. The latter, states David Gordon White, were introduced about 8th-century CE in Buddhist texts as hierarchies of inner energy centers, such as in the Hevajra Tantra and Caryāgiti. These are called by various terms such as cakka, padma (lotus) or pitha (mound). These medieval Buddhist texts mention only four chakras, while later Hindu texts such as the Kubjikāmata and Kaulajñānanirnaya expanded the list to many more.", "title": "Ancient history" }, { "paragraph_id": 9, "text": "In contrast to White, according to Feuerstein, early Upanishads of Hinduism do mention chakras in the sense of \"psychospiritual vortices\", along with other terms found in tantra: prana or vayu (life energy) along with nadi (energy carrying arteries). According to Gavin Flood, the ancient texts do not present chakra and kundalini-style yoga theories although these words appear in the earliest Vedic literature in many contexts. The chakra in the sense of four or more vital energy centers appear in the medieval era Hindu and Buddhist texts.", "title": "Ancient history" }, { "paragraph_id": 10, "text": "Chakra and divine energies", "title": "Overview" }, { "paragraph_id": 11, "text": "Shining, she holds the noose made of the energy of will, the hook which is energy of knowledge, the bow and arrows made of energy of action. Split into support and supported, divided into eight, bearer of weapons, arising from the chakra with eight points, she has the ninefold chakra as a throne.", "title": "Overview" }, { "paragraph_id": 12, "text": "—Yoginihrdaya 53–54(Translator: Andre Padoux)", "title": "Overview" }, { "paragraph_id": 13, "text": "The Chakras are part of esoteric ideas and concepts about physiology and psychic centers that emerged across Indian traditions. The belief held that human life simultaneously exists in two parallel dimensions, one \"physical body\" (sthula sarira) and other \"psychological, emotional, mind, non-physical\" it is called the \"subtle body\" (sukshma sarira). This subtle body is energy, while the physical body is mass. The psyche or mind plane corresponds to and interacts with the body plane, and the belief holds that the body and the mind mutually affect each other. The subtle body consists of nadi (energy channels) connected by nodes of psychic energy called chakra. The belief grew into extensive elaboration, with some suggesting 88,000 chakras throughout the subtle body. The number of major chakras varied between various traditions, but they typically ranged between four and seven. Nyingmapa Vajrayana Buddhist teachings mention eight chakras and there is a complete yogic system for each of them.", "title": "Overview" }, { "paragraph_id": 14, "text": "The important chakras are stated in Hindu and Buddhist texts to be arranged in a column along the spinal cord, from its base to the top of the head, connected by vertical channels. The tantric traditions sought to master them, awaken and energize them through various breathing exercises or with assistance of a teacher. These chakras were also symbolically mapped to specific human physiological capacity, seed syllables (bija), sounds, subtle elements (tanmatra), in some cases deities, colors and other motifs.", "title": "Overview" }, { "paragraph_id": 15, "text": "Belief in the chakra system of Hinduism and Buddhism differs from the historic Chinese system of meridians in acupuncture. Unlike the latter, the chakra relates to subtle body, wherein it has a position but no definite nervous node or precise physical connection. The tantric systems envision it as continually present, highly relevant and a means to psychic and emotional energy. It is useful in a type of yogic rituals and meditative discovery of radiant inner energy (prana flows) and mind-body connections. The meditation is aided by extensive symbology, mantras, diagrams, models (deity and mandala). The practitioner proceeds step by step from perceptible models, to increasingly abstract models where deity and external mandala are abandoned, inner self and internal mandalas are awakened.", "title": "Overview" }, { "paragraph_id": 16, "text": "These ideas are not unique to Hindu and Buddhist traditions. Similar and overlapping concepts emerged in other cultures in the East and the West, and these are variously called by other names such as subtle body, spirit body, esoteric anatomy, sidereal body and etheric body. According to Geoffrey Samuel and Jay Johnston, professors of Religious studies known for their studies on Yoga and esoteric traditions:", "title": "Overview" }, { "paragraph_id": 17, "text": "Ideas and practices involving so-called 'subtle bodies' have existed for many centuries in many parts of the world. (...) Virtually all human cultures known to us have some kind of concept of mind, spirit or soul as distinct from the physical body, if only to explain experiences such as sleep and dreaming. (...) An important subset of subtle-body practices, found particularly in Indian and Tibetan Tantric traditions, and in similar Chinese practices, involves the idea of an internal 'subtle physiology' of the body (or rather of the body-mind complex) made up of channels through which substances of some kind flow, and points of intersection at which these channels come together. In the Indian tradition the channels are known as nadi and the points of intersection as cakra.", "title": "Overview" }, { "paragraph_id": 18, "text": "Chakra and related beliefs have been important to the esoteric traditions, but they are not directly related to mainstream yoga. According to the Indologist Edwin Bryant and other scholars, the goals of classical yoga such as spiritual liberation (freedom, self-knowledge, moksha) is \"attained entirely differently in classical yoga, and the cakra / nadi / kundalini physiology is completely peripheral to it.\"", "title": "Overview" }, { "paragraph_id": 19, "text": "There is no consensus in Hinduism about the number of chakras because the concept of chakras has been evolved and interpreted differently by various sects, schools of thought, and spiritual traditions within Hinduism over the centuries. While some traditions follow the seven main chakra system, others recognize additional chakras or a different number of chakras. The lack of a universally accepted standard has led to variation and diversity in the interpretation and understanding of chakras within Hinduism. There are several sects within Hinduism that have their own unique interpretations and understandings of the concept of chakras. Here are some of the major sects that have different perspectives on chakras:", "title": "Number of chakras" }, { "paragraph_id": 20, "text": "The classical eastern traditions, particularly those that developed in India during the 1st millennium AD, primarily describe nadi and chakra in a \"subtle body\" context. To them, they are in same dimension as of the psyche-mind reality that is invisible yet real. In the nadi and cakra flow the prana (breath, life energy). The concept of \"life energy\" varies between the texts, ranging from simple inhalation-exhalation to far more complex association with breath-mind-emotions-sexual energy. This prana or essence is what vanishes when a person dies, leaving a gross body. Some of this concept states this subtle body is what withdraws within, when one sleeps. All of it is believed to be reachable, awake-able and important for an individual's body-mind health, and how one relates to other people in one's life. This subtle body network of nadi and chakra is, according to some later Indian theories and many new age speculations, closely associated with emotions.", "title": "Classical traditions" }, { "paragraph_id": 21, "text": "Esoteric traditions in Hinduism mention numerous numbers and arrangements of chakras, of which a classical system of six-plus-one, the last being the Sahasrara, is most prevalent. This seven-part system, central to the core texts of hatha yoga, is one among many systems found in Hindu tantric literature. Hindu Tantra associates six Yoginis with six places in the subtle body, corresponding to the six chakras of the six-plus-one system.", "title": "Classical traditions" }, { "paragraph_id": 22, "text": "The Chakra methodology is extensively developed in the goddess tradition of Hinduism called Shaktism. It is an important concept along with yantras, mandalas and kundalini yoga in its practice. Chakra in Shakta tantrism means circle, an \"energy center\" within, as well as being a term for group rituals such as in chakra-puja (worship within a circle) which may or may not involve tantra practice. The cakra-based system is a part of the meditative exercises that came to be known as yoga.", "title": "Classical traditions" }, { "paragraph_id": 23, "text": "The esoteric traditions in Buddhism generally teach four chakras. In some early Buddhist sources, these chakras are identified as: manipura (navel), anahata (heart), vishuddha (throat) and ushnisha kamala (crown). In one development within the Nyingma lineage of the Mantrayana of Tibetan Buddhism a popular conceptualization of chakras in increasing subtlety and increasing order is as follows: Nirmanakaya (gross self), Sambhogakaya (subtle self), Dharmakaya (causal self), and Mahasukhakaya (non-dual self), each vaguely and indirectly corresponding to the categories within the Shaiva Mantramarga universe, i.e., Svadhisthana, Anahata, Visuddha, Sahasrara, etc. However, depending on the meditational tradition, these vary between three and six. The chakras are considered psycho-spiritual constituents, each bearing meaningful correspondences to cosmic processes and their postulated Buddha counterpart.", "title": "Classical traditions" }, { "paragraph_id": 24, "text": "A system of five chakras is common among the Mother class of Tantras and these five chakras along with their correspondences are:", "title": "Classical traditions" }, { "paragraph_id": 25, "text": "Chakras clearly play a key role in Tibetan Buddhism, and are considered to be the pivotal providence of Tantric thinking. And, the precise use of the chakras across the gamut of tantric sadhanas gives little space to doubt the primary efficacy of Tibetan Buddhism as distinct religious agency, that being that precise revelation that, without Tantra there would be no Chakras, but more importantly, without Chakras, there is no Tibetan Buddhism. The highest practices in Tibetan Buddhism point to the ability to bring the subtle pranas of an entity into alignment with the central channel, and to thus penetrate the realisation of the ultimate unity, namely, the \"organic harmony\" of one's individual consciousness of Wisdom with the co-attainment of All-embracing Love, thus synthesizing a direct cognition of absolute Buddhahood.", "title": "Classical traditions" }, { "paragraph_id": 26, "text": "According to Samuel, the buddhist esoteric systems developed cakra and nadi as \"central to their soteriological process\". The theories were sometimes, but not always, coupled with a unique system of physical exercises, called yantra yoga or 'phrul 'khor.", "title": "Classical traditions" }, { "paragraph_id": 27, "text": "Chakras, according to the Bon tradition, enable the gestalt of experience, with each of the five major chakras, being psychologically linked with the five experiential qualities of unenlightened consciousness, the six realms of woe.", "title": "Classical traditions" }, { "paragraph_id": 28, "text": "The tsa lung practice embodied in the Trul khor lineage, unbaffles the primary channels, thus activating and circulating liberating prana. Yoga awakens the deep mind, thus bringing forth positive attributes, inherent gestalts, and virtuous qualities. In a computer analogy, the screen of one's consciousness is slated and an attribute-bearing file is called up that contains necessary positive or negative, supportive qualities.", "title": "Classical traditions" }, { "paragraph_id": 29, "text": "Tantric practice is said to eventually transform all experience into clear light. The practice aims to liberate from all negative conditioning, and the deep cognitive salvation of freedom from control and unity of perception and cognition.", "title": "Classical traditions" }, { "paragraph_id": 30, "text": "The more common and most studied chakra system incorporates six major chakras along with a seventh center generally not regarded as a chakra. These points are arranged vertically along the axial channel (sushumna nadi in Hindu texts, Avadhuti in some Buddhist texts). According to Gavin Flood, this system of six chakras plus the sahasrara \"center\" at the crown first appears in the Kubjikāmata-tantra, an 11th-century Kaula work.", "title": "The seven chakra system" }, { "paragraph_id": 31, "text": "It was this chakra system that was translated in the early 20th century by Sir John Woodroffe (also called Arthur Avalon) in the text The Serpent Power. Avalon translated the Hindu text Ṣaṭ-Cakra-Nirūpaṇa meaning the examination (nirūpaṇa) of the seven (ṣaṭ) chakras (cakra).", "title": "The seven chakra system" }, { "paragraph_id": 32, "text": "The Chakras are traditionally considered meditation aids. The yogi progresses from lower chakras to the highest chakra blossoming in the crown of the head, internalizing the journey of spiritual ascent. In both the Hindu kundalini and Buddhist candali traditions, the chakras are pierced by a dormant energy residing near or in the lowest chakra. In Hindu texts she is known as Kundalini, while in Buddhist texts she is called Candali or Tummo (Tibetan: gtum mo, \"fierce one\").", "title": "The seven chakra system" }, { "paragraph_id": 33, "text": "Below are the common new age description of these six chakras and the seventh point known as sahasrara. This new age version incorporates the Newtonian colors of the rainbow not found in any ancient Indian system.", "title": "The seven chakra system" }, { "paragraph_id": 34, "text": "Kurt Leland, for the Theosophical Society in America, concluded that the western chakra system was produced by an \"unintentional collaboration\" of many groups of people: esotericists and clairvoyants, often theosophical; Indologists; the scholar of myth, Joseph Campbell; the founders of the Esalen Institute and the psychological tradition of Carl Jung; the colour system of Charles W. Leadbeater's 1927 book The Chakras, treated as traditional lore by some modern Indian yogis; and energy healers such as Barbara Brennan. Leland states that far from being traditional, the two main elements of the modern system, the rainbow colours and the list of qualities, first appeared together only in 1977.", "title": "Western chakra system" }, { "paragraph_id": 35, "text": "The concept of a set of seven chakras came to the West in the 1880s; at that time each chakra was associated with a nerve plexus. In 1918, Sir John Woodroffe, alias Arthur Avalon, translated two Indian texts, the Ṣaṭ-Cakra-Nirūpaṇa and the Pādukā-Pañcaka, and in his book The Serpent Power drew Western attention to the seven chakra theory.", "title": "Western chakra system" }, { "paragraph_id": 36, "text": "In the 1920s, each of the seven chakras was associated with an endocrine gland, a tradition that has persisted. More recently, the lower six chakras have been linked to both nerve plexuses and glands. The seven rainbow colours were added by Leadbeater in 1927; a variant system in the 1930s proposed six colours plus white. Leadbeater's theory was influenced by Johann Georg Gichtel's 1696 book Theosophia Practica, which mentioned inner \"force centres\".", "title": "Western chakra system" }, { "paragraph_id": 37, "text": "Psychological and other attributes such as layers of the aura, developmental stages, associated diseases, Aristotelian elements, emotions, and states of consciousness were added still later. A wide range of supposed correspondences such as with alchemical metals, astrological signs and planets, foods, herbs, gemstones, homeopathic remedies, Kabbalistic spheres, musical notes, totem animals, and Tarot cards have also been proposed.", "title": "Western chakra system" }, { "paragraph_id": 38, "text": "In Anatomy of the Spirit (1996), Caroline Myss described the function of chakras as follows: \"Every thought and experience you've ever had in your life gets filtered through these chakra databases. Each event is recorded into your cells...\". The chakras are described as being aligned in an ascending column from the base of the spine to the top of the head. New Age practices often associate each chakra with a certain colour. In various traditions, chakras are associated with multiple physiological functions, an aspect of consciousness, a classical element, and other distinguishing characteristics; these do not correspond to those used in ancient Indian systems. The chakras are visualised as lotuses or flowers with a different number of petals in every chakra.", "title": "Western chakra system" }, { "paragraph_id": 39, "text": "The chakras are thought to vitalise the physical body and to be associated with interactions of a physical, emotional and mental nature. They are considered loci of life energy or prana (which New Age belief equates with shakti, qi in Chinese, ki in Japanese, koach-ha-guf in Hebrew, bios in Greek, and aether in both Greek and English), which is thought to flow among them along pathways called nadi. The function of the chakras is to spin and draw in this energy to keep the spiritual, mental, emotional and physical health of the body in balance.", "title": "Western chakra system" }, { "paragraph_id": 40, "text": "Rudolf Steiner considered the chakra system to be dynamic and evolving. He suggested that this system has become different for modern people than it was in ancient times and that it will, in turn, be radically different in future times. Steiner described a sequence of development that begins with the upper chakras and moves down, rather than moving in the opposite direction. He gave suggestions on how to develop the chakras through disciplining thoughts, feelings, and will. According to Florin Lowndes, a \"spiritual student\" can further develop and deepen or elevate thinking consciousness when taking the step from the \"ancient path\" of schooling to the \"new path\" represented by Steiner's The Philosophy of Freedom.", "title": "Western chakra system" }, { "paragraph_id": 41, "text": "The not-for-profit Edinburgh Skeptics Society states that despite their popularity, \"there has never been any evidence for these meridian lines or chakras\". It adds that while practitioners sometimes cite \"scientific evidence\" for their claims, such evidence is often \"incredibly shaky\".", "title": "Skeptical response" } ]	Chakras are various focal points used in a variety of ancient meditation practices, collectively denominated as Tantra, or the esoteric or inner traditions of Hinduism and Buddhism. The concept of the chakra arose in the early traditions of Hinduism. Beliefs differ between the Indian religions, with many Buddhist texts consistently mentioning five chakras, while Hindu sources reference six or seven. Early Sanskrit texts speak of them both as meditative visualizations combining flowers and mantras and as physical entities in the body. Within Kundalini yoga, the techniques of breathing exercises, visualizations, mudras, bandhas, kriyas, and mantras are focused on manipulating the flow of subtle energy through chakras. The modern Western chakra system arose from multiple sources, starting in the 1880s with H. P. Blavatsky and other Theosophists, followed by Sir John Woodroffe's 1919 book The Serpent Power, and Charles W. Leadbeater's 1927 book The Chakras. Psychological and other attributes, rainbow colours, and a wide range of supposed correspondences with other systems such as alchemy, astrology, gemstones, homeopathy, Kabbalah and Tarot were added later.	2001-10-26T13:18:43Z	2023-12-21T11:58:15Z	[ "Template:Refend", "Template:Authority control", "Template:IPAc-en", "Template:Cite web", "Template:Reflist", "Template:Cite journal", "Template:Lang-grc", "Template:Main", "Template:Use dmy dates", "Template:Quote box", "Template:Refbegin", "Template:Wikiquote", "Template:Yoga", "Template:Short description", "Template:Hatgrp", "Template:Respell", "Template:Lang-sa", "Template:Blockquote", "Template:Cite book", "Template:Indian philosophy", "Template:Multiple issues", "Template:Use Indian English", "Template:Further", "Template:See", "Template:Portal", "Template:ISBN", "Template:Hinduism (compact)", "Template:Contains special characters", "Template:'", "Template:Wiktionary", "Template:See also", "Template:-", "Template:Refn", "Template:Cite thesis", "Template:Lang-pi", "Template:Commons category" ]	https://en.wikipedia.org/wiki/Chakra
6,910	Cloning	Cloning is the process of producing individual organisms with identical genomes, either by natural or artificial means. In nature, some organisms produce clones through asexual reproduction; this reproduction of an organism by itself without a mate is known as parthenogenesis. In the field of biotechnology, cloning is the process of creating cloned organisms of cells and of DNA fragments. The artificial cloning of organisms, sometimes known as reproductive cloning, is often accomplished via somatic-cell nuclear transfer (SCNT), a cloning method in which a viable embryo is created from a somatic cell and an egg cell. In 1996, Dolly the sheep achieved notoriety for being the first mammal cloned from a somatic cell. Another example of artificial cloning is molecular cloning, a technique in molecular biology in which a single living cell is used to clone a large population of cells that contain identical DNA molecules. In bioethics, there are a variety of ethical positions regarding the practice and possibilities of cloning. The use of embryonic stem cells, which can be produced through SCNT, in some stem cell research has attracted controversy. Cloning has been proposed as a means of reviving extinct species. In popular culture, the concept of cloning—particularly human cloning—is often depicted in science fiction; depictions commonly involve themes related to identity, the recreation of historical figures or extinct species, or cloning for exploitation (i.e. cloning soldiers for warfare). Coined by Herbert J. Webber, the term clone derives from the Ancient Greek word κλών (klōn), twig, which is the process whereby a new plant is created from a twig. In botany, the term lusus was used. In horticulture, the spelling clon was used until the early twentieth century; the final e came into use to indicate the vowel is a "long o" instead of a "short o". Since the term entered the popular lexicon in a more general context, the spelling clone has been used exclusively. Natural cloning is the production of clones without the involvement of genetic engineering techniques. It may occur accidentally in the case of identical twins, which are formed when a fertilized egg splits, creating two or more embryos that carry almost identical DNA. It may also be part of asexual reproduction, which is a process where a single parent organism produces genetically identical offspring by itself. Cloning is a natural form of reproduction that has allowed life forms to spread for hundreds of millions of years. It is a reproduction method used by plants, fungi, and bacteria, and is also the way that clonal colonies reproduce themselves. Examples of these organisms include blueberry plants, Hazel trees, the Pando trees, the Kentucky coffeetree, Myrica, and the American sweetgum. If artificial cloning and natural cloning both lead to the same result, which is the formation of a clone, that is, an organism with identical or nearly identical genes to another organism, then the plight of This creation is very different between the two creatures. The main difference between the two is that natural cloning does not involve any human intervention, whereas artificial cloning is a genetic engineering technique. Natural cloning occurs through a variety of natural mechanisms, from single-celled organisms to complex multicellular organisms. Some ofthe mechanisms are explored and used into plants and animals as binary fission, Budding, Fragmentation, parthenogenesis. Molecular cloning refers to the process of making multiple molecules. Cloning is commonly used to amplify DNA fragments containing whole genes, but it can also be used to amplify any DNA sequence such as promoters, non-coding sequences and randomly fragmented DNA. It is used in a wide array of biological experiments and practical applications ranging from genetic fingerprinting to large scale protein production. Occasionally, the term cloning is misleadingly used to refer to the identification of the chromosomal location of a gene associated with a particular phenotype of interest, such as in positional cloning. In practice, localization of the gene to a chromosome or genomic region does not necessarily enable one to isolate or amplify the relevant genomic sequence. To amplify any DNA sequence in a living organism, that sequence must be linked to an origin of replication, which is a sequence of DNA capable of directing the propagation of itself and any linked sequence. However, a number of other features are needed, and a variety of specialised cloning vectors (small piece of DNA into which a foreign DNA fragment can be inserted) exist that allow protein production, affinity tagging, single-stranded RNA or DNA production and a host of other molecular biology tools. Cloning of any DNA fragment essentially involves four steps Although these steps are invariable among cloning procedures a number of alternative routes can be selected; these are summarized as a cloning strategy. Initially, the DNA of interest needs to be isolated to provide a DNA segment of suitable size. Subsequently, a ligation procedure is used where the amplified fragment is inserted into a vector (piece of DNA). The vector (which is frequently circular) is linearised using restriction enzymes, and incubated with the fragment of interest under appropriate conditions with an enzyme called DNA ligase. Following ligation, the vector with the insert of interest is transfected into cells. A number of alternative techniques are available, such as chemical sensitisation of cells, electroporation, optical injection and biolistics. Finally, the transfected cells are cultured. As the aforementioned procedures are of particularly low efficiency, there is a need to identify the cells that have been successfully transfected with the vector construct containing the desired insertion sequence in the required orientation. Modern cloning vectors include selectable antibiotic resistance markers, which allow only cells in which the vector has been transfected, to grow. Additionally, the cloning vectors may contain colour selection markers, which provide blue/white screening (alpha-factor complementation) on X-gal medium. Nevertheless, these selection steps do not absolutely guarantee that the DNA insert is present in the cells obtained. Further investigation of the resulting colonies must be required to confirm that cloning was successful. This may be accomplished by means of PCR, restriction fragment analysis and/or DNA sequencing. Cloning a cell means to derive a population of cells from a single cell. In the case of unicellular organisms such as bacteria and yeast, this process is remarkably simple and essentially only requires the inoculation of the appropriate medium. However, in the case of cell cultures from multi-cellular organisms, cell cloning is an arduous task as these cells will not readily grow in standard media. A useful tissue culture technique used to clone distinct lineages of cell lines involves the use of cloning rings (cylinders). In this technique a single-cell suspension of cells that have been exposed to a mutagenic agent or drug used to drive selection is plated at high dilution to create isolated colonies, each arising from a single and potentially clonal distinct cell. At an early growth stage when colonies consist of only a few cells, sterile polystyrene rings (cloning rings), which have been dipped in grease, are placed over an individual colony and a small amount of trypsin is added. Cloned cells are collected from inside the ring and transferred to a new vessel for further growth. Somatic-cell nuclear transfer, popularly known as SCNT, can also be used to create embryos for research or therapeutic purposes. The most likely purpose for this is to produce embryos for use in stem cell research. This process is also called "research cloning" or "therapeutic cloning". The goal is not to create cloned human beings (called "reproductive cloning"), but rather to harvest stem cells that can be used to study human development and to potentially treat disease. While a clonal human blastocyst has been created, stem cell lines are yet to be isolated from a clonal source. Therapeutic cloning is achieved by creating embryonic stem cells in the hopes of treating diseases such as diabetes and Alzheimer's. The process begins by removing the nucleus (containing the DNA) from an egg cell and inserting a nucleus from the adult cell to be cloned. In the case of someone with Alzheimer's disease, the nucleus from a skin cell of that patient is placed into an empty egg. The reprogrammed cell begins to develop into an embryo because the egg reacts with the transferred nucleus. The embryo will become genetically identical to the patient. The embryo will then form a blastocyst which has the potential to form/become any cell in the body. The reason why SCNT is used for cloning is because somatic cells can be easily acquired and cultured in the lab. This process can either add or delete specific genomes of farm animals. A key point to remember is that cloning is achieved when the oocyte maintains its normal functions and instead of using sperm and egg genomes to replicate, the donor's somatic cell nucleus is inserted into the oocyte. The oocyte will react to the somatic cell nucleus, the same way it would to a sperm cell's nucleus. The process of cloning a particular farm animal using SCNT is relatively the same for all animals. The first step is to collect the somatic cells from the animal that will be cloned. The somatic cells could be used immediately or stored in the laboratory for later use. The hardest part of SCNT is removing maternal DNA from an oocyte at metaphase II. Once this has been done, the somatic nucleus can be inserted into an egg cytoplasm. This creates a one-cell embryo. The grouped somatic cell and egg cytoplasm are then introduced to an electrical current. This energy will hopefully allow the cloned embryo to begin development. The successfully developed embryos are then placed in surrogate recipients, such as a cow or sheep in the case of farm animals. SCNT is seen as a good method for producing agriculture animals for food consumption. It successfully cloned sheep, cattle, goats, and pigs. Another benefit is SCNT is seen as a solution to clone endangered species that are on the verge of going extinct. However, stresses placed on both the egg cell and the introduced nucleus can be enormous, which led to a high loss in resulting cells in early research. For example, the cloned sheep Dolly was born after 277 eggs were used for SCNT, which created 29 viable embryos. Only three of these embryos survived until birth, and only one survived to adulthood. As the procedure could not be automated, and had to be performed manually under a microscope, SCNT was very resource intensive. The biochemistry involved in reprogramming the differentiated somatic cell nucleus and activating the recipient egg was also far from being well understood. However, by 2014 researchers were reporting cloning success rates of seven to eight out of ten and in 2016, a Korean Company Sooam Biotech was reported to be producing 500 cloned embryos per day. In SCNT, not all of the donor cell's genetic information is transferred, as the donor cell's mitochondria that contain their own mitochondrial DNA are left behind. The resulting hybrid cells retain those mitochondrial structures which originally belonged to the egg. As a consequence, clones such as Dolly that are born from SCNT are not perfect copies of the donor of the nucleus. Organism cloning (also called reproductive cloning) refers to the procedure of creating a new multicellular organism, genetically identical to another. In essence this form of cloning is an asexual method of reproduction, where fertilization or inter-gamete contact does not take place. Asexual reproduction is a naturally occurring phenomenon in many species, including most plants and some insects. Scientists have made some major achievements with cloning, including the asexual reproduction of sheep and cows. There is a lot of ethical debate over whether or not cloning should be used. However, cloning, or asexual propagation, has been common practice in the horticultural world for hundreds of years. The term clone is used in horticulture to refer to descendants of a single plant which were produced by vegetative reproduction or apomixis. Many horticultural plant cultivars are clones, having been derived from a single individual, multiplied by some process other than sexual reproduction. As an example, some European cultivars of grapes represent clones that have been propagated for over two millennia. Other examples are potato and banana. Grafting can be regarded as cloning, since all the shoots and branches coming from the graft are genetically a clone of a single individual, but this particular kind of cloning has not come under ethical scrutiny and is generally treated as an entirely different kind of operation. Many trees, shrubs, vines, ferns and other herbaceous perennials form clonal colonies naturally. Parts of an individual plant may become detached by fragmentation and grow on to become separate clonal individuals. A common example is in the vegetative reproduction of moss and liverwort gametophyte clones by means of gemmae. Some vascular plants e.g. dandelion and certain viviparous grasses also form seeds asexually, termed apomixis, resulting in clonal populations of genetically identical individuals. Clonal derivation exists in nature in some animal species and is referred to as parthenogenesis (reproduction of an organism by itself without a mate). This is an asexual form of reproduction that is only found in females of some insects, crustaceans, nematodes, fish (for example the hammerhead shark), Cape honeybees, and lizards including the Komodo dragon and several whiptails. The growth and development occurs without fertilization by a male. In plants, parthenogenesis means the development of an embryo from an unfertilized egg cell, and is a component process of apomixis. In species that use the XY sex-determination system, the offspring will always be female. An example is the little fire ant (Wasmannia auropunctata), which is native to Central and South America but has spread throughout many tropical environments. Artificial cloning of organisms may also be called reproductive cloning. Hans Spemann, a German embryologist was awarded a Nobel Prize in Physiology or Medicine in 1935 for his discovery of the effect now known as embryonic induction, exercised by various parts of the embryo, that directs the development of groups of cells into particular tissues and organs. In 1924 he and his student, Hilde Mangold, were the first to perform somatic-cell nuclear transfer using amphibian embryos – one of the first steps towards cloning. Reproductive cloning generally uses "somatic cell nuclear transfer" (SCNT) to create animals that are genetically identical. This process entails the transfer of a nucleus from a donor adult cell (somatic cell) to an egg from which the nucleus has been removed, or to a cell from a blastocyst from which the nucleus has been removed. If the egg begins to divide normally it is transferred into the uterus of the surrogate mother. Such clones are not strictly identical since the somatic cells may contain mutations in their nuclear DNA. Additionally, the mitochondria in the cytoplasm also contains DNA and during SCNT this mitochondrial DNA is wholly from the cytoplasmic donor's egg, thus the mitochondrial genome is not the same as that of the nucleus donor cell from which it was produced. This may have important implications for cross-species nuclear transfer in which nuclear-mitochondrial incompatibilities may lead to death. Artificial embryo splitting or embryo twinning, a technique that creates monozygotic twins from a single embryo, is not considered in the same fashion as other methods of cloning. During that procedure, a donor embryo is split in two distinct embryos, that can then be transferred via embryo transfer. It is optimally performed at the 6- to 8-cell stage, where it can be used as an expansion of IVF to increase the number of available embryos. If both embryos are successful, it gives rise to monozygotic (identical) twins. Dolly, a Finn-Dorset ewe, was the first mammal to have been successfully cloned from an adult somatic cell. Dolly was formed by taking a cell from the udder of her 6-year-old biological mother. Dolly's embryo was created by taking the cell and inserting it into a sheep ovum. It took 435 attempts before an embryo was successful. The embryo was then placed inside a female sheep that went through a normal pregnancy. She was cloned at the Roslin Institute in Scotland by British scientists Sir Ian Wilmut and Keith Campbell and lived there from her birth in 1996 until her death in 2003 when she was six. She was born on 5 July 1996 but not announced to the world until 22 February 1997. Her stuffed remains were placed at Edinburgh's Royal Museum, part of the National Museums of Scotland. Dolly was publicly significant because the effort showed that genetic material from a specific adult cell, designed to express only a distinct subset of its genes, can be redesigned to grow an entirely new organism. Before this demonstration, it had been shown by John Gurdon that nuclei from differentiated cells could give rise to an entire organism after transplantation into an enucleated egg. However, this concept was not yet demonstrated in a mammalian system. The first mammalian cloning (resulting in Dolly) had a success rate of 29 embryos per 277 fertilized eggs, which produced three lambs at birth, one of which lived. In a bovine experiment involving 70 cloned calves, one-third of the calves died quite young. The first successfully cloned horse, Prometea, took 814 attempts. Notably, although the first clones were frogs, no adult cloned frog has yet been produced from a somatic adult nucleus donor cell. There were early claims that Dolly had pathologies resembling accelerated aging. Scientists speculated that Dolly's death in 2003 was related to the shortening of telomeres, DNA-protein complexes that protect the end of linear chromosomes. However, other researchers, including Ian Wilmut who led the team that successfully cloned Dolly, argue that Dolly's early death due to respiratory infection was unrelated to problems with the cloning process. This idea that the nuclei have not irreversibly aged was shown in 2013 to be true for mice. Dolly was named after performer Dolly Parton because the cells cloned to make her were from a mammary gland cell, and Parton is known for her ample cleavage. The modern cloning techniques involving nuclear transfer have been successfully performed on several species. Notable experiments include: Human cloning is the creation of a genetically identical copy of a human. The term is generally used to refer to artificial human cloning, which is the reproduction of human cells and tissues. It does not refer to the natural conception and delivery of identical twins. The possibility of human cloning has raised controversies. These ethical concerns have prompted several nations to pass legislation regarding human cloning and its legality. As of right now, scientists have no intention of trying to clone people and they believe their results should spark a wider discussion about the laws and regulations the world needs to regulate cloning. Two commonly discussed types of theoretical human cloning are therapeutic cloning and reproductive cloning. Therapeutic cloning would involve cloning cells from a human for use in medicine and transplants, and is an active area of research, but is not in medical practice anywhere in the world, as of 2021. Two common methods of therapeutic cloning that are being researched are somatic-cell nuclear transfer and, more recently, pluripotent stem cell induction. Reproductive cloning would involve making an entire cloned human, instead of just specific cells or tissues. There are a variety of ethical positions regarding the possibilities of cloning, especially human cloning. While many of these views are religious in origin, the questions raised by cloning are faced by secular perspectives as well. Perspectives on human cloning are theoretical, as human therapeutic and reproductive cloning are not commercially used; animals are currently cloned in laboratories and in livestock production. Advocates support development of therapeutic cloning to generate tissues and whole organs to treat patients who otherwise cannot obtain transplants, to avoid the need for immunosuppressive drugs, and to stave off the effects of aging. Advocates for reproductive cloning believe that parents who cannot otherwise procreate should have access to the technology. Opponents of cloning have concerns that technology is not yet developed enough to be safe and that it could be prone to abuse (leading to the generation of humans from whom organs and tissues would be harvested), as well as concerns about how cloned individuals could integrate with families and with society at large. Cloning humans could lead to serious violations of human rights. Religious groups are divided, with some opposing the technology as usurping "God's place" and, to the extent embryos are used, destroying a human life; others support therapeutic cloning's potential life-saving benefits. There is at least one religion, Raëlism, in which cloning plays a major role. Contemporary work on this topic is concerned with the ethics, adequate regulation and issues of any cloning carried out by humans, not potentially by extraterrestrials (including in the future), and largely also not replication – also described as mind cloning – of potential whole brain emulations. Cloning of animals is opposed by animal-groups due to the number of cloned animals that suffer from malformations before they die, and while food from cloned animals has been approved as safe by the US FDA, its use is opposed by groups concerned about food safety. In practical terms, the inclusion of "licensing requirements for embryo research projects and fertility clinics, restrictions on the commodification of eggs and sperm, and measures to prevent proprietary interests from monopolizing access to stem cell lines" in international cloning regulations has been proposed, albeit e.g. effective oversight mechanisms or cloning requirements have not been described. Cloning, or more precisely, the reconstruction of functional DNA from extinct species has, for decades, been a dream. Possible implications of this were dramatized in the 1984 novel Carnosaur and the 1990 novel Jurassic Park. The best current cloning techniques have an average success rate of 9.4 percent (and as high as 25 percent) when working with familiar species such as mice, while cloning wild animals is usually less than 1 percent successful. Several tissue banks have come into existence, including the "Frozen zoo" at the San Diego Zoo, to store frozen tissue from the world's rarest and most endangered species. This is also referred to as "Conservation cloning". Engineers have proposed a "lunar ark" in 2021 – storing millions of seed, spore, sperm and egg samples from Earth's contemporary species in a network of lava tubes on the Moon as a genetic backup. Similar proposals have been made since at least 2008. These also include sending human customer DNA, and a proposal for "a lunar backup record of humanity" that includes genetic information by Avi Loeb et al. Scientists at the University of Newcastle and University of New South Wales announced in March 2013 that the very recently extinct gastric-brooding frog would be the subject of a cloning attempt to resurrect the species. Many such "De-extinction" projects are being championed by the non-profit Revive & Restore. One of the most anticipated targets for cloning was once the woolly mammoth, but attempts to extract DNA from frozen mammoths have been unsuccessful, though a joint Russo-Japanese team is currently working toward this goal. In January 2011, it was reported by Yomiuri Shimbun that a team of scientists headed by Akira Iritani of Kyoto University had built upon research by Dr. Wakayama, saying that they will extract DNA from a mammoth carcass that had been preserved in a Russian laboratory and insert it into the egg cells of an Asian elephant in hopes of producing a mammoth embryo. The researchers said they hoped to produce a baby mammoth within six years. It was noted, however that the result, if possible, would be an elephant-mammoth hybrid rather than a true mammoth. Another problem is the survival of the reconstructed mammoth: ruminants rely on a symbiosis with specific microbiota in their stomachs for digestion. In 2022, scientists showed major limitations and the scale of challenge of genetic-editing-based de-extinction, suggesting resources spent on more comprehensive de-extinction projects such as of the woolly mammoth may currently not be well allocated and substantially limited. Their analyses "show that even when the extremely high-quality Norway brown rat (R. norvegicus) is used as a reference, nearly 5% of the genome sequence is unrecoverable, with 1,661 genes recovered at lower than 90% completeness, and 26 completely absent", complicated further by that "distribution of regions affected is not random, but for example, if 90% completeness is used as the cutoff, genes related to immune response and olfaction are excessively affected" due to which "a reconstructed Christmas Island rat would lack attributes likely critical to surviving in its natural or natural-like environment". In a 2021 online session of the Russian Geographical Society, Russia's defense minister Sergei Shoigu mentioned using the DNA of 3,000-year-old Scythian warriors to potentially bring them back to life. The idea was described as absurd at least at this point in news reports and it was noted that Scythians likely weren't skilled warriors by default. The idea of cloning Neanderthals or bringing them back to life in general is controversial but some scientists have stated that it may be possible in the future and have outlined several issues or problems with such as well as broad rationales for doing so. In 2001, a cow named Bessie gave birth to a cloned Asian gaur, an endangered species, but the calf died after two days. In 2003, a banteng was successfully cloned, followed by three African wildcats from a thawed frozen embryo. These successes provided hope that similar techniques (using surrogate mothers of another species) might be used to clone extinct species. Anticipating this possibility, tissue samples from the last bucardo (Pyrenean ibex) were frozen in liquid nitrogen immediately after it died in 2000. Researchers are also considering cloning endangered species such as the Giant panda and Cheetah. In 2002, geneticists at the Australian Museum announced that they had replicated DNA of the thylacine (Tasmanian tiger), at the time extinct for about 65 years, using polymerase chain reaction. However, on 15 February 2005 the museum announced that it was stopping the project after tests showed the specimens' DNA had been too badly degraded by the (ethanol) preservative. On 15 May 2005 it was announced that the thylacine project would be revived, with new participation from researchers in New South Wales and Victoria. In 2003, for the first time, an extinct animal, the Pyrenean ibex mentioned above was cloned, at the Centre of Food Technology and Research of Aragon, using the preserved frozen cell nucleus of the skin samples from 2001 and domestic goat egg-cells. The ibex died shortly after birth due to physical defects in its lungs. After an eight-year project involving the use of a pioneering cloning technique, Japanese researchers created 25 generations of healthy cloned mice with normal lifespans, demonstrating that clones are not intrinsically shorter-lived than naturally born animals. Other sources have noted that the offspring of clones tend to be healthier than the original clones and indistinguishable from animals produced naturally. Some posited that Dolly the sheep may have aged more quickly than naturally born animals, as she died relatively early for a sheep at the age of six. Ultimately, her death was attributed to a respiratory illness, and the "advanced aging" theory is disputed. A detailed study released in 2016 and less detailed studies by others suggest that once cloned animals get past the first month or two of life they are generally healthy. However, early pregnancy loss and neonatal losses are still greater with cloning than natural conception or assisted reproduction (IVF). Current research is attempting to overcome these problems. Discussion of cloning in the popular media often presents the subject negatively. In an article in the 8 November 1993 article of Time, cloning was portrayed in a negative way, modifying Michelangelo's Creation of Adam to depict Adam with five identical hands. Newsweek's 10 March 1997 issue also critiqued the ethics of human cloning, and included a graphic depicting identical babies in beakers. The concept of cloning, particularly human cloning, has featured a wide variety of science fiction works. An early fictional depiction of cloning is Bokanovsky's Process which features in Aldous Huxley's 1931 dystopian novel Brave New World. The process is applied to fertilized human eggs in vitro, causing them to split into identical genetic copies of the original. Following renewed interest in cloning in the 1950s, the subject was explored further in works such as Poul Anderson's 1953 story UN-Man, which describes a technology called "exogenesis", and Gordon Rattray Taylor's book The Biological Time Bomb, which popularised the term "cloning" in 1963. Cloning is a recurring theme in a number of contemporary science fiction films, ranging from action films such as Anna to the Infinite Power, The Boys from Brazil, Jurassic Park (1993), Alien Resurrection (1997), The 6th Day (2000), Resident Evil (2002), Star Wars: Episode II – Attack of the Clones (2002), The Island (2005) and Moon (2009) to comedies such as Woody Allen's 1973 film Sleeper. The process of cloning is represented variously in fiction. Many works depict the artificial creation of humans by a method of growing cells from a tissue or DNA sample; the replication may be instantaneous, or take place through slow growth of human embryos in artificial wombs. In the long-running British television series Doctor Who, the Fourth Doctor and his companion Leela were cloned in a matter of seconds from DNA samples ("The Invisible Enemy", 1977) and then – in an apparent homage to the 1966 film Fantastic Voyage – shrunk to microscopic size to enter the Doctor's body to combat an alien virus. The clones in this story are short-lived, and can only survive a matter of minutes before they expire. Science fiction films such as The Matrix and Star Wars: Episode II – Attack of the Clones have featured scenes of human foetuses being cultured on an industrial scale in mechanical tanks. Cloning humans from body parts is also a common theme in science fiction. Cloning features strongly among the science fiction conventions parodied in Woody Allen's Sleeper, the plot of which centres around an attempt to clone an assassinated dictator from his disembodied nose. In the 2008 Doctor Who story "Journey's End", a duplicate version of the Tenth Doctor spontaneously grows from his severed hand, which had been cut off in a sword fight during an earlier episode. After the death of her beloved 14-year-old Coton de Tulear named Samantha in late 2017, Barbra Streisand announced that she had cloned the dog, and was now "waiting for [the two cloned pups] to get older so [she] can see if they have [Samantha's] brown eyes and her seriousness". The operation cost $50,000 through the pet cloning company ViaGen. Science fiction has used cloning, most commonly and specifically human cloning, to raise the controversial questions of identity. A Number is a 2002 play by English playwright Caryl Churchill which addresses the subject of human cloning and identity, especially nature and nurture. The story, set in the near future, is structured around the conflict between a father (Salter) and his sons (Bernard 1, Bernard 2, and Michael Black) – two of whom are clones of the first one. A Number was adapted by Caryl Churchill for television, in a co-production between the BBC and HBO Films. In 2012, a Japanese television series named "Bunshin" was created. The story's main character, Mariko, is a woman studying child welfare in Hokkaido. She grew up always doubtful about the love from her mother, who looked nothing like her and who died nine years before. One day, she finds some of her mother's belongings at a relative's house, and heads to Tokyo to seek out the truth behind her birth. She later discovered that she was a clone. In the 2013 television series Orphan Black, cloning is used as a scientific study on the behavioral adaptation of the clones. In a similar vein, the book The Double by Nobel Prize winner José Saramago explores the emotional experience of a man who discovers that he is a clone. Cloning has been used in fiction as a way of recreating historical figures. In the 1976 Ira Levin novel The Boys from Brazil and its 1978 film adaptation, Josef Mengele uses cloning to create copies of Adolf Hitler. In Michael Crichton's 1990 novel Jurassic Park, which spawned a series of Jurassic Park feature films, the bioengineering company InGen develops a technique to resurrect extinct species of dinosaurs by creating cloned creatures using DNA extracted from fossils. The cloned dinosaurs are used to populate the Jurassic Park wildlife park for the entertainment of visitors. The scheme goes disastrously wrong when the dinosaurs escape their enclosures. Despite being selectively cloned as females to prevent them from breeding, the dinosaurs develop the ability to reproduce through parthenogenesis. The use of cloning for military purposes has also been explored in several fictional works. In Doctor Who, an alien race of armour-clad, warlike beings called Sontarans was introduced in the 1973 serial "The Time Warrior". Sontarans are depicted as squat, bald creatures who have been genetically engineered for combat. Their weak spot is a "probic vent", a small socket at the back of their neck which is associated with the cloning process. The concept of cloned soldiers being bred for combat was revisited in "The Doctor's Daughter" (2008), when the Doctor's DNA is used to create a female warrior called Jenny. The 1977 film Star Wars was set against the backdrop of a historical conflict called the Clone Wars. The events of this war were not fully explored until the prequel films Attack of the Clones (2002) and Revenge of the Sith (2005), which depict a space war waged by a massive army of heavily armoured clone troopers that leads to the foundation of the Galactic Empire. Cloned soldiers are "manufactured" on an industrial scale, genetically conditioned for obedience and combat effectiveness. It is also revealed that the popular character Boba Fett originated as a clone of Jango Fett, a mercenary who served as the genetic template for the clone troopers. A recurring sub-theme of cloning fiction is the use of clones as a supply of organs for transplantation. The 2005 Kazuo Ishiguro novel Never Let Me Go and the 2010 film adaption are set in an alternate history in which cloned humans are created for the sole purpose of providing organ donations to naturally born humans, despite the fact that they are fully sentient and self-aware. The 2005 film The Island revolves around a similar plot, with the exception that the clones are unaware of the reason for their existence. The exploitation of human clones for dangerous and undesirable work was examined in the 2009 British science fiction film Moon. In the futuristic novel Cloud Atlas and subsequent film, one of the story lines focuses on a genetically engineered fabricant clone named Sonmi~451, one of millions raised in an artificial "wombtank", destined to serve from birth. She is one of thousands created for manual and emotional labor; Sonmi herself works as a server in a restaurant. She later discovers that the sole source of food for clones, called 'Soap', is manufactured from the clones themselves. In the film Us, at some point prior to the 1980s, the US Government creates clones of every citizen of the United States with the intention of using them to control their original counterparts, akin to voodoo dolls. This fails, as they were able to copy bodies, but unable to copy the souls of those they cloned. The project is abandoned and the clones are trapped exactly mirroring their above-ground counterparts' actions for generations. In the present day, the clones launch a surprise attack and manage to complete a mass-genocide of their unaware counterparts.	[ { "paragraph_id": 0, "text": "Cloning is the process of producing individual organisms with identical genomes, either by natural or artificial means. In nature, some organisms produce clones through asexual reproduction; this reproduction of an organism by itself without a mate is known as parthenogenesis. In the field of biotechnology, cloning is the process of creating cloned organisms of cells and of DNA fragments.", "title": "" }, { "paragraph_id": 1, "text": "The artificial cloning of organisms, sometimes known as reproductive cloning, is often accomplished via somatic-cell nuclear transfer (SCNT), a cloning method in which a viable embryo is created from a somatic cell and an egg cell. In 1996, Dolly the sheep achieved notoriety for being the first mammal cloned from a somatic cell. Another example of artificial cloning is molecular cloning, a technique in molecular biology in which a single living cell is used to clone a large population of cells that contain identical DNA molecules.", "title": "" }, { "paragraph_id": 2, "text": "In bioethics, there are a variety of ethical positions regarding the practice and possibilities of cloning. The use of embryonic stem cells, which can be produced through SCNT, in some stem cell research has attracted controversy. Cloning has been proposed as a means of reviving extinct species. In popular culture, the concept of cloning—particularly human cloning—is often depicted in science fiction; depictions commonly involve themes related to identity, the recreation of historical figures or extinct species, or cloning for exploitation (i.e. cloning soldiers for warfare).", "title": "" }, { "paragraph_id": 3, "text": "Coined by Herbert J. Webber, the term clone derives from the Ancient Greek word κλών (klōn), twig, which is the process whereby a new plant is created from a twig. In botany, the term lusus was used. In horticulture, the spelling clon was used until the early twentieth century; the final e came into use to indicate the vowel is a \"long o\" instead of a \"short o\". Since the term entered the popular lexicon in a more general context, the spelling clone has been used exclusively.", "title": "Etymology" }, { "paragraph_id": 4, "text": "Natural cloning is the production of clones without the involvement of genetic engineering techniques. It may occur accidentally in the case of identical twins, which are formed when a fertilized egg splits, creating two or more embryos that carry almost identical DNA. It may also be part of asexual reproduction, which is a process where a single parent organism produces genetically identical offspring by itself.", "title": "Natural cloning" }, { "paragraph_id": 5, "text": "Cloning is a natural form of reproduction that has allowed life forms to spread for hundreds of millions of years. It is a reproduction method used by plants, fungi, and bacteria, and is also the way that clonal colonies reproduce themselves. Examples of these organisms include blueberry plants, Hazel trees, the Pando trees, the Kentucky coffeetree, Myrica, and the American sweetgum.", "title": "Natural cloning" }, { "paragraph_id": 6, "text": "If artificial cloning and natural cloning both lead to the same result, which is the formation of a clone, that is, an organism with identical or nearly identical genes to another organism, then the plight of This creation is very different between the two creatures. The main difference between the two is that natural cloning does not involve any human intervention, whereas artificial cloning is a genetic engineering technique. Natural cloning occurs through a variety of natural mechanisms, from single-celled organisms to complex multicellular organisms. Some ofthe mechanisms are explored and used into plants and animals as binary fission, Budding, Fragmentation, parthenogenesis.", "title": "Natural cloning" }, { "paragraph_id": 7, "text": "Molecular cloning refers to the process of making multiple molecules. Cloning is commonly used to amplify DNA fragments containing whole genes, but it can also be used to amplify any DNA sequence such as promoters, non-coding sequences and randomly fragmented DNA. It is used in a wide array of biological experiments and practical applications ranging from genetic fingerprinting to large scale protein production. Occasionally, the term cloning is misleadingly used to refer to the identification of the chromosomal location of a gene associated with a particular phenotype of interest, such as in positional cloning. In practice, localization of the gene to a chromosome or genomic region does not necessarily enable one to isolate or amplify the relevant genomic sequence. To amplify any DNA sequence in a living organism, that sequence must be linked to an origin of replication, which is a sequence of DNA capable of directing the propagation of itself and any linked sequence. However, a number of other features are needed, and a variety of specialised cloning vectors (small piece of DNA into which a foreign DNA fragment can be inserted) exist that allow protein production, affinity tagging, single-stranded RNA or DNA production and a host of other molecular biology tools.", "title": "Molecular cloning" }, { "paragraph_id": 8, "text": "Cloning of any DNA fragment essentially involves four steps", "title": "Molecular cloning" }, { "paragraph_id": 9, "text": "Although these steps are invariable among cloning procedures a number of alternative routes can be selected; these are summarized as a cloning strategy.", "title": "Molecular cloning" }, { "paragraph_id": 10, "text": "Initially, the DNA of interest needs to be isolated to provide a DNA segment of suitable size. Subsequently, a ligation procedure is used where the amplified fragment is inserted into a vector (piece of DNA). The vector (which is frequently circular) is linearised using restriction enzymes, and incubated with the fragment of interest under appropriate conditions with an enzyme called DNA ligase. Following ligation, the vector with the insert of interest is transfected into cells. A number of alternative techniques are available, such as chemical sensitisation of cells, electroporation, optical injection and biolistics. Finally, the transfected cells are cultured. As the aforementioned procedures are of particularly low efficiency, there is a need to identify the cells that have been successfully transfected with the vector construct containing the desired insertion sequence in the required orientation. Modern cloning vectors include selectable antibiotic resistance markers, which allow only cells in which the vector has been transfected, to grow. Additionally, the cloning vectors may contain colour selection markers, which provide blue/white screening (alpha-factor complementation) on X-gal medium. Nevertheless, these selection steps do not absolutely guarantee that the DNA insert is present in the cells obtained. Further investigation of the resulting colonies must be required to confirm that cloning was successful. This may be accomplished by means of PCR, restriction fragment analysis and/or DNA sequencing.", "title": "Molecular cloning" }, { "paragraph_id": 11, "text": "Cloning a cell means to derive a population of cells from a single cell. In the case of unicellular organisms such as bacteria and yeast, this process is remarkably simple and essentially only requires the inoculation of the appropriate medium. However, in the case of cell cultures from multi-cellular organisms, cell cloning is an arduous task as these cells will not readily grow in standard media.", "title": "Cell cloning" }, { "paragraph_id": 12, "text": "A useful tissue culture technique used to clone distinct lineages of cell lines involves the use of cloning rings (cylinders). In this technique a single-cell suspension of cells that have been exposed to a mutagenic agent or drug used to drive selection is plated at high dilution to create isolated colonies, each arising from a single and potentially clonal distinct cell. At an early growth stage when colonies consist of only a few cells, sterile polystyrene rings (cloning rings), which have been dipped in grease, are placed over an individual colony and a small amount of trypsin is added. Cloned cells are collected from inside the ring and transferred to a new vessel for further growth.", "title": "Cell cloning" }, { "paragraph_id": 13, "text": "Somatic-cell nuclear transfer, popularly known as SCNT, can also be used to create embryos for research or therapeutic purposes. The most likely purpose for this is to produce embryos for use in stem cell research. This process is also called \"research cloning\" or \"therapeutic cloning\". The goal is not to create cloned human beings (called \"reproductive cloning\"), but rather to harvest stem cells that can be used to study human development and to potentially treat disease. While a clonal human blastocyst has been created, stem cell lines are yet to be isolated from a clonal source.", "title": "Cell cloning" }, { "paragraph_id": 14, "text": "Therapeutic cloning is achieved by creating embryonic stem cells in the hopes of treating diseases such as diabetes and Alzheimer's. The process begins by removing the nucleus (containing the DNA) from an egg cell and inserting a nucleus from the adult cell to be cloned. In the case of someone with Alzheimer's disease, the nucleus from a skin cell of that patient is placed into an empty egg. The reprogrammed cell begins to develop into an embryo because the egg reacts with the transferred nucleus. The embryo will become genetically identical to the patient. The embryo will then form a blastocyst which has the potential to form/become any cell in the body.", "title": "Cell cloning" }, { "paragraph_id": 15, "text": "The reason why SCNT is used for cloning is because somatic cells can be easily acquired and cultured in the lab. This process can either add or delete specific genomes of farm animals. A key point to remember is that cloning is achieved when the oocyte maintains its normal functions and instead of using sperm and egg genomes to replicate, the donor's somatic cell nucleus is inserted into the oocyte. The oocyte will react to the somatic cell nucleus, the same way it would to a sperm cell's nucleus.", "title": "Cell cloning" }, { "paragraph_id": 16, "text": "The process of cloning a particular farm animal using SCNT is relatively the same for all animals. The first step is to collect the somatic cells from the animal that will be cloned. The somatic cells could be used immediately or stored in the laboratory for later use. The hardest part of SCNT is removing maternal DNA from an oocyte at metaphase II. Once this has been done, the somatic nucleus can be inserted into an egg cytoplasm. This creates a one-cell embryo. The grouped somatic cell and egg cytoplasm are then introduced to an electrical current. This energy will hopefully allow the cloned embryo to begin development. The successfully developed embryos are then placed in surrogate recipients, such as a cow or sheep in the case of farm animals.", "title": "Cell cloning" }, { "paragraph_id": 17, "text": "SCNT is seen as a good method for producing agriculture animals for food consumption. It successfully cloned sheep, cattle, goats, and pigs. Another benefit is SCNT is seen as a solution to clone endangered species that are on the verge of going extinct. However, stresses placed on both the egg cell and the introduced nucleus can be enormous, which led to a high loss in resulting cells in early research. For example, the cloned sheep Dolly was born after 277 eggs were used for SCNT, which created 29 viable embryos. Only three of these embryos survived until birth, and only one survived to adulthood. As the procedure could not be automated, and had to be performed manually under a microscope, SCNT was very resource intensive. The biochemistry involved in reprogramming the differentiated somatic cell nucleus and activating the recipient egg was also far from being well understood. However, by 2014 researchers were reporting cloning success rates of seven to eight out of ten and in 2016, a Korean Company Sooam Biotech was reported to be producing 500 cloned embryos per day.", "title": "Cell cloning" }, { "paragraph_id": 18, "text": "In SCNT, not all of the donor cell's genetic information is transferred, as the donor cell's mitochondria that contain their own mitochondrial DNA are left behind. The resulting hybrid cells retain those mitochondrial structures which originally belonged to the egg. As a consequence, clones such as Dolly that are born from SCNT are not perfect copies of the donor of the nucleus.", "title": "Cell cloning" }, { "paragraph_id": 19, "text": "Organism cloning (also called reproductive cloning) refers to the procedure of creating a new multicellular organism, genetically identical to another. In essence this form of cloning is an asexual method of reproduction, where fertilization or inter-gamete contact does not take place. Asexual reproduction is a naturally occurring phenomenon in many species, including most plants and some insects. Scientists have made some major achievements with cloning, including the asexual reproduction of sheep and cows. There is a lot of ethical debate over whether or not cloning should be used. However, cloning, or asexual propagation, has been common practice in the horticultural world for hundreds of years.", "title": "Organism cloning" }, { "paragraph_id": 20, "text": "The term clone is used in horticulture to refer to descendants of a single plant which were produced by vegetative reproduction or apomixis. Many horticultural plant cultivars are clones, having been derived from a single individual, multiplied by some process other than sexual reproduction. As an example, some European cultivars of grapes represent clones that have been propagated for over two millennia. Other examples are potato and banana.", "title": "Organism cloning" }, { "paragraph_id": 21, "text": "Grafting can be regarded as cloning, since all the shoots and branches coming from the graft are genetically a clone of a single individual, but this particular kind of cloning has not come under ethical scrutiny and is generally treated as an entirely different kind of operation.", "title": "Organism cloning" }, { "paragraph_id": 22, "text": "Many trees, shrubs, vines, ferns and other herbaceous perennials form clonal colonies naturally. Parts of an individual plant may become detached by fragmentation and grow on to become separate clonal individuals. A common example is in the vegetative reproduction of moss and liverwort gametophyte clones by means of gemmae. Some vascular plants e.g. dandelion and certain viviparous grasses also form seeds asexually, termed apomixis, resulting in clonal populations of genetically identical individuals.", "title": "Organism cloning" }, { "paragraph_id": 23, "text": "Clonal derivation exists in nature in some animal species and is referred to as parthenogenesis (reproduction of an organism by itself without a mate). This is an asexual form of reproduction that is only found in females of some insects, crustaceans, nematodes, fish (for example the hammerhead shark), Cape honeybees, and lizards including the Komodo dragon and several whiptails. The growth and development occurs without fertilization by a male. In plants, parthenogenesis means the development of an embryo from an unfertilized egg cell, and is a component process of apomixis. In species that use the XY sex-determination system, the offspring will always be female. An example is the little fire ant (Wasmannia auropunctata), which is native to Central and South America but has spread throughout many tropical environments.", "title": "Organism cloning" }, { "paragraph_id": 24, "text": "Artificial cloning of organisms may also be called reproductive cloning.", "title": "Organism cloning" }, { "paragraph_id": 25, "text": "Hans Spemann, a German embryologist was awarded a Nobel Prize in Physiology or Medicine in 1935 for his discovery of the effect now known as embryonic induction, exercised by various parts of the embryo, that directs the development of groups of cells into particular tissues and organs. In 1924 he and his student, Hilde Mangold, were the first to perform somatic-cell nuclear transfer using amphibian embryos – one of the first steps towards cloning.", "title": "Organism cloning" }, { "paragraph_id": 26, "text": "Reproductive cloning generally uses \"somatic cell nuclear transfer\" (SCNT) to create animals that are genetically identical. This process entails the transfer of a nucleus from a donor adult cell (somatic cell) to an egg from which the nucleus has been removed, or to a cell from a blastocyst from which the nucleus has been removed. If the egg begins to divide normally it is transferred into the uterus of the surrogate mother. Such clones are not strictly identical since the somatic cells may contain mutations in their nuclear DNA. Additionally, the mitochondria in the cytoplasm also contains DNA and during SCNT this mitochondrial DNA is wholly from the cytoplasmic donor's egg, thus the mitochondrial genome is not the same as that of the nucleus donor cell from which it was produced. This may have important implications for cross-species nuclear transfer in which nuclear-mitochondrial incompatibilities may lead to death.", "title": "Organism cloning" }, { "paragraph_id": 27, "text": "Artificial embryo splitting or embryo twinning, a technique that creates monozygotic twins from a single embryo, is not considered in the same fashion as other methods of cloning. During that procedure, a donor embryo is split in two distinct embryos, that can then be transferred via embryo transfer. It is optimally performed at the 6- to 8-cell stage, where it can be used as an expansion of IVF to increase the number of available embryos. If both embryos are successful, it gives rise to monozygotic (identical) twins.", "title": "Organism cloning" }, { "paragraph_id": 28, "text": "Dolly, a Finn-Dorset ewe, was the first mammal to have been successfully cloned from an adult somatic cell. Dolly was formed by taking a cell from the udder of her 6-year-old biological mother. Dolly's embryo was created by taking the cell and inserting it into a sheep ovum. It took 435 attempts before an embryo was successful. The embryo was then placed inside a female sheep that went through a normal pregnancy. She was cloned at the Roslin Institute in Scotland by British scientists Sir Ian Wilmut and Keith Campbell and lived there from her birth in 1996 until her death in 2003 when she was six. She was born on 5 July 1996 but not announced to the world until 22 February 1997. Her stuffed remains were placed at Edinburgh's Royal Museum, part of the National Museums of Scotland.", "title": "Organism cloning" }, { "paragraph_id": 29, "text": "Dolly was publicly significant because the effort showed that genetic material from a specific adult cell, designed to express only a distinct subset of its genes, can be redesigned to grow an entirely new organism. Before this demonstration, it had been shown by John Gurdon that nuclei from differentiated cells could give rise to an entire organism after transplantation into an enucleated egg. However, this concept was not yet demonstrated in a mammalian system.", "title": "Organism cloning" }, { "paragraph_id": 30, "text": "The first mammalian cloning (resulting in Dolly) had a success rate of 29 embryos per 277 fertilized eggs, which produced three lambs at birth, one of which lived. In a bovine experiment involving 70 cloned calves, one-third of the calves died quite young. The first successfully cloned horse, Prometea, took 814 attempts. Notably, although the first clones were frogs, no adult cloned frog has yet been produced from a somatic adult nucleus donor cell.", "title": "Organism cloning" }, { "paragraph_id": 31, "text": "There were early claims that Dolly had pathologies resembling accelerated aging. Scientists speculated that Dolly's death in 2003 was related to the shortening of telomeres, DNA-protein complexes that protect the end of linear chromosomes. However, other researchers, including Ian Wilmut who led the team that successfully cloned Dolly, argue that Dolly's early death due to respiratory infection was unrelated to problems with the cloning process. This idea that the nuclei have not irreversibly aged was shown in 2013 to be true for mice.", "title": "Organism cloning" }, { "paragraph_id": 32, "text": "Dolly was named after performer Dolly Parton because the cells cloned to make her were from a mammary gland cell, and Parton is known for her ample cleavage.", "title": "Organism cloning" }, { "paragraph_id": 33, "text": "The modern cloning techniques involving nuclear transfer have been successfully performed on several species. Notable experiments include:", "title": "Organism cloning" }, { "paragraph_id": 34, "text": "Human cloning is the creation of a genetically identical copy of a human. The term is generally used to refer to artificial human cloning, which is the reproduction of human cells and tissues. It does not refer to the natural conception and delivery of identical twins. The possibility of human cloning has raised controversies. These ethical concerns have prompted several nations to pass legislation regarding human cloning and its legality. As of right now, scientists have no intention of trying to clone people and they believe their results should spark a wider discussion about the laws and regulations the world needs to regulate cloning.", "title": "Organism cloning" }, { "paragraph_id": 35, "text": "Two commonly discussed types of theoretical human cloning are therapeutic cloning and reproductive cloning. Therapeutic cloning would involve cloning cells from a human for use in medicine and transplants, and is an active area of research, but is not in medical practice anywhere in the world, as of 2021. Two common methods of therapeutic cloning that are being researched are somatic-cell nuclear transfer and, more recently, pluripotent stem cell induction. Reproductive cloning would involve making an entire cloned human, instead of just specific cells or tissues.", "title": "Organism cloning" }, { "paragraph_id": 36, "text": "There are a variety of ethical positions regarding the possibilities of cloning, especially human cloning. While many of these views are religious in origin, the questions raised by cloning are faced by secular perspectives as well. Perspectives on human cloning are theoretical, as human therapeutic and reproductive cloning are not commercially used; animals are currently cloned in laboratories and in livestock production.", "title": "Organism cloning" }, { "paragraph_id": 37, "text": "Advocates support development of therapeutic cloning to generate tissues and whole organs to treat patients who otherwise cannot obtain transplants, to avoid the need for immunosuppressive drugs, and to stave off the effects of aging. Advocates for reproductive cloning believe that parents who cannot otherwise procreate should have access to the technology.", "title": "Organism cloning" }, { "paragraph_id": 38, "text": "Opponents of cloning have concerns that technology is not yet developed enough to be safe and that it could be prone to abuse (leading to the generation of humans from whom organs and tissues would be harvested), as well as concerns about how cloned individuals could integrate with families and with society at large. Cloning humans could lead to serious violations of human rights.", "title": "Organism cloning" }, { "paragraph_id": 39, "text": "Religious groups are divided, with some opposing the technology as usurping \"God's place\" and, to the extent embryos are used, destroying a human life; others support therapeutic cloning's potential life-saving benefits. There is at least one religion, Raëlism, in which cloning plays a major role.", "title": "Organism cloning" }, { "paragraph_id": 40, "text": "Contemporary work on this topic is concerned with the ethics, adequate regulation and issues of any cloning carried out by humans, not potentially by extraterrestrials (including in the future), and largely also not replication – also described as mind cloning – of potential whole brain emulations.", "title": "Organism cloning" }, { "paragraph_id": 41, "text": "Cloning of animals is opposed by animal-groups due to the number of cloned animals that suffer from malformations before they die, and while food from cloned animals has been approved as safe by the US FDA, its use is opposed by groups concerned about food safety.", "title": "Organism cloning" }, { "paragraph_id": 42, "text": "In practical terms, the inclusion of \"licensing requirements for embryo research projects and fertility clinics, restrictions on the commodification of eggs and sperm, and measures to prevent proprietary interests from monopolizing access to stem cell lines\" in international cloning regulations has been proposed, albeit e.g. effective oversight mechanisms or cloning requirements have not been described.", "title": "Organism cloning" }, { "paragraph_id": 43, "text": "Cloning, or more precisely, the reconstruction of functional DNA from extinct species has, for decades, been a dream. Possible implications of this were dramatized in the 1984 novel Carnosaur and the 1990 novel Jurassic Park. The best current cloning techniques have an average success rate of 9.4 percent (and as high as 25 percent) when working with familiar species such as mice, while cloning wild animals is usually less than 1 percent successful.", "title": "Organism cloning" }, { "paragraph_id": 44, "text": "Several tissue banks have come into existence, including the \"Frozen zoo\" at the San Diego Zoo, to store frozen tissue from the world's rarest and most endangered species. This is also referred to as \"Conservation cloning\".", "title": "Organism cloning" }, { "paragraph_id": 45, "text": "Engineers have proposed a \"lunar ark\" in 2021 – storing millions of seed, spore, sperm and egg samples from Earth's contemporary species in a network of lava tubes on the Moon as a genetic backup. Similar proposals have been made since at least 2008. These also include sending human customer DNA, and a proposal for \"a lunar backup record of humanity\" that includes genetic information by Avi Loeb et al.", "title": "Organism cloning" }, { "paragraph_id": 46, "text": "Scientists at the University of Newcastle and University of New South Wales announced in March 2013 that the very recently extinct gastric-brooding frog would be the subject of a cloning attempt to resurrect the species.", "title": "Organism cloning" }, { "paragraph_id": 47, "text": "Many such \"De-extinction\" projects are being championed by the non-profit Revive & Restore.", "title": "Organism cloning" }, { "paragraph_id": 48, "text": "One of the most anticipated targets for cloning was once the woolly mammoth, but attempts to extract DNA from frozen mammoths have been unsuccessful, though a joint Russo-Japanese team is currently working toward this goal. In January 2011, it was reported by Yomiuri Shimbun that a team of scientists headed by Akira Iritani of Kyoto University had built upon research by Dr. Wakayama, saying that they will extract DNA from a mammoth carcass that had been preserved in a Russian laboratory and insert it into the egg cells of an Asian elephant in hopes of producing a mammoth embryo. The researchers said they hoped to produce a baby mammoth within six years. It was noted, however that the result, if possible, would be an elephant-mammoth hybrid rather than a true mammoth. Another problem is the survival of the reconstructed mammoth: ruminants rely on a symbiosis with specific microbiota in their stomachs for digestion.", "title": "Organism cloning" }, { "paragraph_id": 49, "text": "In 2022, scientists showed major limitations and the scale of challenge of genetic-editing-based de-extinction, suggesting resources spent on more comprehensive de-extinction projects such as of the woolly mammoth may currently not be well allocated and substantially limited. Their analyses \"show that even when the extremely high-quality Norway brown rat (R. norvegicus) is used as a reference, nearly 5% of the genome sequence is unrecoverable, with 1,661 genes recovered at lower than 90% completeness, and 26 completely absent\", complicated further by that \"distribution of regions affected is not random, but for example, if 90% completeness is used as the cutoff, genes related to immune response and olfaction are excessively affected\" due to which \"a reconstructed Christmas Island rat would lack attributes likely critical to surviving in its natural or natural-like environment\".", "title": "Organism cloning" }, { "paragraph_id": 50, "text": "In a 2021 online session of the Russian Geographical Society, Russia's defense minister Sergei Shoigu mentioned using the DNA of 3,000-year-old Scythian warriors to potentially bring them back to life. The idea was described as absurd at least at this point in news reports and it was noted that Scythians likely weren't skilled warriors by default.", "title": "Organism cloning" }, { "paragraph_id": 51, "text": "The idea of cloning Neanderthals or bringing them back to life in general is controversial but some scientists have stated that it may be possible in the future and have outlined several issues or problems with such as well as broad rationales for doing so.", "title": "Organism cloning" }, { "paragraph_id": 52, "text": "In 2001, a cow named Bessie gave birth to a cloned Asian gaur, an endangered species, but the calf died after two days. In 2003, a banteng was successfully cloned, followed by three African wildcats from a thawed frozen embryo. These successes provided hope that similar techniques (using surrogate mothers of another species) might be used to clone extinct species. Anticipating this possibility, tissue samples from the last bucardo (Pyrenean ibex) were frozen in liquid nitrogen immediately after it died in 2000. Researchers are also considering cloning endangered species such as the Giant panda and Cheetah.", "title": "Organism cloning" }, { "paragraph_id": 53, "text": "In 2002, geneticists at the Australian Museum announced that they had replicated DNA of the thylacine (Tasmanian tiger), at the time extinct for about 65 years, using polymerase chain reaction. However, on 15 February 2005 the museum announced that it was stopping the project after tests showed the specimens' DNA had been too badly degraded by the (ethanol) preservative. On 15 May 2005 it was announced that the thylacine project would be revived, with new participation from researchers in New South Wales and Victoria.", "title": "Organism cloning" }, { "paragraph_id": 54, "text": "In 2003, for the first time, an extinct animal, the Pyrenean ibex mentioned above was cloned, at the Centre of Food Technology and Research of Aragon, using the preserved frozen cell nucleus of the skin samples from 2001 and domestic goat egg-cells. The ibex died shortly after birth due to physical defects in its lungs.", "title": "Organism cloning" }, { "paragraph_id": 55, "text": "After an eight-year project involving the use of a pioneering cloning technique, Japanese researchers created 25 generations of healthy cloned mice with normal lifespans, demonstrating that clones are not intrinsically shorter-lived than naturally born animals. Other sources have noted that the offspring of clones tend to be healthier than the original clones and indistinguishable from animals produced naturally.", "title": "Organism cloning" }, { "paragraph_id": 56, "text": "Some posited that Dolly the sheep may have aged more quickly than naturally born animals, as she died relatively early for a sheep at the age of six. Ultimately, her death was attributed to a respiratory illness, and the \"advanced aging\" theory is disputed.", "title": "Organism cloning" }, { "paragraph_id": 57, "text": "A detailed study released in 2016 and less detailed studies by others suggest that once cloned animals get past the first month or two of life they are generally healthy. However, early pregnancy loss and neonatal losses are still greater with cloning than natural conception or assisted reproduction (IVF). Current research is attempting to overcome these problems.", "title": "Organism cloning" }, { "paragraph_id": 58, "text": "Discussion of cloning in the popular media often presents the subject negatively. In an article in the 8 November 1993 article of Time, cloning was portrayed in a negative way, modifying Michelangelo's Creation of Adam to depict Adam with five identical hands. Newsweek's 10 March 1997 issue also critiqued the ethics of human cloning, and included a graphic depicting identical babies in beakers.", "title": "In popular culture" }, { "paragraph_id": 59, "text": "The concept of cloning, particularly human cloning, has featured a wide variety of science fiction works. An early fictional depiction of cloning is Bokanovsky's Process which features in Aldous Huxley's 1931 dystopian novel Brave New World. The process is applied to fertilized human eggs in vitro, causing them to split into identical genetic copies of the original. Following renewed interest in cloning in the 1950s, the subject was explored further in works such as Poul Anderson's 1953 story UN-Man, which describes a technology called \"exogenesis\", and Gordon Rattray Taylor's book The Biological Time Bomb, which popularised the term \"cloning\" in 1963.", "title": "In popular culture" }, { "paragraph_id": 60, "text": "Cloning is a recurring theme in a number of contemporary science fiction films, ranging from action films such as Anna to the Infinite Power, The Boys from Brazil, Jurassic Park (1993), Alien Resurrection (1997), The 6th Day (2000), Resident Evil (2002), Star Wars: Episode II – Attack of the Clones (2002), The Island (2005) and Moon (2009) to comedies such as Woody Allen's 1973 film Sleeper.", "title": "In popular culture" }, { "paragraph_id": 61, "text": "The process of cloning is represented variously in fiction. Many works depict the artificial creation of humans by a method of growing cells from a tissue or DNA sample; the replication may be instantaneous, or take place through slow growth of human embryos in artificial wombs. In the long-running British television series Doctor Who, the Fourth Doctor and his companion Leela were cloned in a matter of seconds from DNA samples (\"The Invisible Enemy\", 1977) and then – in an apparent homage to the 1966 film Fantastic Voyage – shrunk to microscopic size to enter the Doctor's body to combat an alien virus. The clones in this story are short-lived, and can only survive a matter of minutes before they expire. Science fiction films such as The Matrix and Star Wars: Episode II – Attack of the Clones have featured scenes of human foetuses being cultured on an industrial scale in mechanical tanks.", "title": "In popular culture" }, { "paragraph_id": 62, "text": "Cloning humans from body parts is also a common theme in science fiction. Cloning features strongly among the science fiction conventions parodied in Woody Allen's Sleeper, the plot of which centres around an attempt to clone an assassinated dictator from his disembodied nose. In the 2008 Doctor Who story \"Journey's End\", a duplicate version of the Tenth Doctor spontaneously grows from his severed hand, which had been cut off in a sword fight during an earlier episode.", "title": "In popular culture" }, { "paragraph_id": 63, "text": "After the death of her beloved 14-year-old Coton de Tulear named Samantha in late 2017, Barbra Streisand announced that she had cloned the dog, and was now \"waiting for [the two cloned pups] to get older so [she] can see if they have [Samantha's] brown eyes and her seriousness\". The operation cost $50,000 through the pet cloning company ViaGen.", "title": "In popular culture" }, { "paragraph_id": 64, "text": "Science fiction has used cloning, most commonly and specifically human cloning, to raise the controversial questions of identity. A Number is a 2002 play by English playwright Caryl Churchill which addresses the subject of human cloning and identity, especially nature and nurture. The story, set in the near future, is structured around the conflict between a father (Salter) and his sons (Bernard 1, Bernard 2, and Michael Black) – two of whom are clones of the first one. A Number was adapted by Caryl Churchill for television, in a co-production between the BBC and HBO Films.", "title": "In popular culture" }, { "paragraph_id": 65, "text": "In 2012, a Japanese television series named \"Bunshin\" was created. The story's main character, Mariko, is a woman studying child welfare in Hokkaido. She grew up always doubtful about the love from her mother, who looked nothing like her and who died nine years before. One day, she finds some of her mother's belongings at a relative's house, and heads to Tokyo to seek out the truth behind her birth. She later discovered that she was a clone.", "title": "In popular culture" }, { "paragraph_id": 66, "text": "In the 2013 television series Orphan Black, cloning is used as a scientific study on the behavioral adaptation of the clones. In a similar vein, the book The Double by Nobel Prize winner José Saramago explores the emotional experience of a man who discovers that he is a clone.", "title": "In popular culture" }, { "paragraph_id": 67, "text": "Cloning has been used in fiction as a way of recreating historical figures. In the 1976 Ira Levin novel The Boys from Brazil and its 1978 film adaptation, Josef Mengele uses cloning to create copies of Adolf Hitler.", "title": "In popular culture" }, { "paragraph_id": 68, "text": "In Michael Crichton's 1990 novel Jurassic Park, which spawned a series of Jurassic Park feature films, the bioengineering company InGen develops a technique to resurrect extinct species of dinosaurs by creating cloned creatures using DNA extracted from fossils. The cloned dinosaurs are used to populate the Jurassic Park wildlife park for the entertainment of visitors. The scheme goes disastrously wrong when the dinosaurs escape their enclosures. Despite being selectively cloned as females to prevent them from breeding, the dinosaurs develop the ability to reproduce through parthenogenesis.", "title": "In popular culture" }, { "paragraph_id": 69, "text": "The use of cloning for military purposes has also been explored in several fictional works. In Doctor Who, an alien race of armour-clad, warlike beings called Sontarans was introduced in the 1973 serial \"The Time Warrior\". Sontarans are depicted as squat, bald creatures who have been genetically engineered for combat. Their weak spot is a \"probic vent\", a small socket at the back of their neck which is associated with the cloning process. The concept of cloned soldiers being bred for combat was revisited in \"The Doctor's Daughter\" (2008), when the Doctor's DNA is used to create a female warrior called Jenny.", "title": "In popular culture" }, { "paragraph_id": 70, "text": "The 1977 film Star Wars was set against the backdrop of a historical conflict called the Clone Wars. The events of this war were not fully explored until the prequel films Attack of the Clones (2002) and Revenge of the Sith (2005), which depict a space war waged by a massive army of heavily armoured clone troopers that leads to the foundation of the Galactic Empire. Cloned soldiers are \"manufactured\" on an industrial scale, genetically conditioned for obedience and combat effectiveness. It is also revealed that the popular character Boba Fett originated as a clone of Jango Fett, a mercenary who served as the genetic template for the clone troopers.", "title": "In popular culture" }, { "paragraph_id": 71, "text": "A recurring sub-theme of cloning fiction is the use of clones as a supply of organs for transplantation. The 2005 Kazuo Ishiguro novel Never Let Me Go and the 2010 film adaption are set in an alternate history in which cloned humans are created for the sole purpose of providing organ donations to naturally born humans, despite the fact that they are fully sentient and self-aware. The 2005 film The Island revolves around a similar plot, with the exception that the clones are unaware of the reason for their existence.", "title": "In popular culture" }, { "paragraph_id": 72, "text": "The exploitation of human clones for dangerous and undesirable work was examined in the 2009 British science fiction film Moon. In the futuristic novel Cloud Atlas and subsequent film, one of the story lines focuses on a genetically engineered fabricant clone named Sonmi~451, one of millions raised in an artificial \"wombtank\", destined to serve from birth. She is one of thousands created for manual and emotional labor; Sonmi herself works as a server in a restaurant. She later discovers that the sole source of food for clones, called 'Soap', is manufactured from the clones themselves.", "title": "In popular culture" }, { "paragraph_id": 73, "text": "In the film Us, at some point prior to the 1980s, the US Government creates clones of every citizen of the United States with the intention of using them to control their original counterparts, akin to voodoo dolls. This fails, as they were able to copy bodies, but unable to copy the souls of those they cloned. The project is abandoned and the clones are trapped exactly mirroring their above-ground counterparts' actions for generations. In the present day, the clones launch a surprise attack and manage to complete a mass-genocide of their unaware counterparts.", "title": "In popular culture" } ]	Cloning is the process of producing individual organisms with identical genomes, either by natural or artificial means. In nature, some organisms produce clones through asexual reproduction; this reproduction of an organism by itself without a mate is known as parthenogenesis. In the field of biotechnology, cloning is the process of creating cloned organisms of cells and of DNA fragments. The artificial cloning of organisms, sometimes known as reproductive cloning, is often accomplished via somatic-cell nuclear transfer (SCNT), a cloning method in which a viable embryo is created from a somatic cell and an egg cell. In 1996, Dolly the sheep achieved notoriety for being the first mammal cloned from a somatic cell. Another example of artificial cloning is molecular cloning, a technique in molecular biology in which a single living cell is used to clone a large population of cells that contain identical DNA molecules. In bioethics, there are a variety of ethical positions regarding the practice and possibilities of cloning. The use of embryonic stem cells, which can be produced through SCNT, in some stem cell research has attracted controversy. Cloning has been proposed as a means of reviving extinct species. In popular culture, the concept of cloning—particularly human cloning—is often depicted in science fiction; depictions commonly involve themes related to identity, the recreation of historical figures or extinct species, or cloning for exploitation.	2001-10-31T20:27:45Z	2023-12-16T14:36:38Z	[ "Template:Dubious", "Template:Cite magazine", "Template:As of", "Template:Refn", "Template:Cite web", "Template:Library resources box", "Template:Short description", "Template:Anchor", "Template:When", "Template:About", "Template:Commons category", "Template:Cite IEP", "Template:Update inline", "Template:Portal", "Template:Rp", "Template:Clarify", "Template:Cite book", "Template:Authority control", "Template:For", "Template:'s", "Template:Reflist", "Template:Citation", "Template:Use dmy dates", "Template:See also", "Template:Main", "Template:Webarchive", "Template:ISBN", "Template:Cite press release", "Template:Transliteration", "Template:Expand section", "Template:Cite journal", "Template:Dead link", "Template:Lang", "Template:Cite news", "Template:Cbignore" ]	https://en.wikipedia.org/wiki/Cloning
6,911	Cellulose	Cellulose is an organic compound with the formula (C6H10O5)n, a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units. Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes. Some species of bacteria secrete it to form biofilms. Cellulose is the most abundant organic polymer on Earth. The cellulose content of cotton fiber is 90%, that of wood is 40–50%, and that of dried hemp is approximately 57%. Cellulose is mainly used to produce paperboard and paper. Smaller quantities are converted into a wide variety of derivative products such as cellophane and rayon. Conversion of cellulose from energy crops into biofuels such as cellulosic ethanol is under development as a renewable fuel source. Cellulose for industrial use is mainly obtained from wood pulp and cotton. Some animals, particularly ruminants and termites, can digest cellulose with the help of symbiotic micro-organisms that live in their guts, such as Trichonympha. In human nutrition, cellulose is a non-digestible constituent of insoluble dietary fiber, acting as a hydrophilic bulking agent for feces and potentially aiding in defecation. Cellulose was discovered in 1838 by the French chemist Anselme Payen, who isolated it from plant matter and determined its chemical formula. Cellulose was used to produce the first successful thermoplastic polymer, celluloid, by Hyatt Manufacturing Company in 1870. Production of rayon ("artificial silk") from cellulose began in the 1890s and cellophane was invented in 1912. Hermann Staudinger determined the polymer structure of cellulose in 1920. The compound was first chemically synthesized (without the use of any biologically derived enzymes) in 1992, by Kobayashi and Shoda. Cellulose has no taste, is odorless, is hydrophilic with the contact angle of 20–30 degrees, is insoluble in water and most organic solvents, is chiral and is biodegradable. It was shown to melt at 467 °C in pulse tests made by Dauenhauer et al. (2016). It can be broken down chemically into its glucose units by treating it with concentrated mineral acids at high temperature. Cellulose is derived from D-glucose units, which condense through β(1→4)-glycosidic bonds. This linkage motif contrasts with that for α(1→4)-glycosidic bonds present in starch and glycogen. Cellulose is a straight chain polymer. Unlike starch, no coiling or branching occurs and the molecule adopts an extended and rather stiff rod-like conformation, aided by the equatorial conformation of the glucose residues. The multiple hydroxyl groups on the glucose from one chain form hydrogen bonds with oxygen atoms on the same or on a neighbor chain, holding the chains firmly together side-by-side and forming microfibrils with high tensile strength. This confers tensile strength in cell walls where cellulose microfibrils are meshed into a polysaccharide matrix. The high tensile strength of plant stems and of the tree wood also arises from the arrangement of cellulose fibers intimately distributed into the lignin matrix. The mechanical role of cellulose fibers in the wood matrix responsible for its strong structural resistance, can somewhat be compared to that of the reinforcement bars in concrete, lignin playing here the role of the hardened cement paste acting as the "glue" in between the cellulose fibers. Mechanical properties of cellulose in primary plant cell wall are correlated with growth and expansion of plant cells. Live fluorescence microscopy techniques are promising in investigation of the role of cellulose in growing plant cells. Compared to starch, cellulose is also much more crystalline. Whereas starch undergoes a crystalline to amorphous transition when heated beyond 60–70 °C in water (as in cooking), cellulose requires a temperature of 320 °C and pressure of 25 MPa to become amorphous in water. Several types of cellulose are known. These forms are distinguished according to the location of hydrogen bonds between and within strands. Natural cellulose is cellulose I, with structures Iα and Iβ. Cellulose produced by bacteria and algae is enriched in Iα while cellulose of higher plants consists mainly of Iβ. Cellulose in regenerated cellulose fibers is cellulose II. The conversion of cellulose I to cellulose II is irreversible, suggesting that cellulose I is metastable and cellulose II is stable. With various chemical treatments it is possible to produce the structures cellulose III and cellulose IV. Many properties of cellulose depend on its chain length or degree of polymerization, the number of glucose units that make up one polymer molecule. Cellulose from wood pulp has typical chain lengths between 300 and 1700 units; cotton and other plant fibers as well as bacterial cellulose have chain lengths ranging from 800 to 10,000 units. Molecules with very small chain length resulting from the breakdown of cellulose are known as cellodextrins; in contrast to long-chain cellulose, cellodextrins are typically soluble in water and organic solvents. The chemical formula of cellulose is (C6H10O5)n where n is the degree of polymerization and represents the number of glucose groups. Plant-derived cellulose is usually found in a mixture with hemicellulose, lignin, pectin and other substances, while bacterial cellulose is quite pure, has a much higher water content and higher tensile strength due to higher chain lengths. Cellulose consists of fibrils with crystalline and amorphous regions. These cellulose fibrils may be individualized by mechanical treatment of cellulose pulp, often assisted by chemical oxidation or enzymatic treatment, yielding semi-flexible cellulose nanofibrils generally 200 nm to 1 μm in length depending on the treatment intensity. Cellulose pulp may also be treated with strong acid to hydrolyze the amorphous fibril regions, thereby producing short rigid cellulose nanocrystals a few 100 nm in length. These nanocelluloses are of high technological interest due to their self-assembly into cholesteric liquid crystals, production of hydrogels or aerogels, use in nanocomposites with superior thermal and mechanical properties, and use as Pickering stabilizers for emulsions. In plants cellulose is synthesized at the plasma membrane by rosette terminal complexes (RTCs). The RTCs are hexameric protein structures, approximately 25 nm in diameter, that contain the cellulose synthase enzymes that synthesise the individual cellulose chains. Each RTC floats in the cell's plasma membrane and "spins" a microfibril into the cell wall. RTCs contain at least three different cellulose synthases, encoded by CesA (Ces is short for "cellulose synthase") genes, in an unknown stoichiometry. Separate sets of CesA genes are involved in primary and secondary cell wall biosynthesis. There are known to be about seven subfamilies in the plant CesA superfamily, some of which include the more cryptic, tentatively-named Csl (cellulose synthase-like) enzymes. These cellulose syntheses use UDP-glucose to form the β(1→4)-linked cellulose. Bacterial cellulose is produced using the same family of proteins, although the gene is called BcsA for "bacterial cellulose synthase" or CelA for "cellulose" in many instances. In fact, plants acquired CesA from the endosymbiosis event that produced the chloroplast. All cellulose synthases known belongs to glucosyltransferase family 2 (GT2). Cellulose synthesis requires chain initiation and elongation, and the two processes are separate. Cellulose synthase (CesA) initiates cellulose polymerization using a steroid primer, sitosterol-beta-glucoside, and UDP-glucose. It then utilizes UDP-D-glucose precursors to elongate the growing cellulose chain. A cellulase may function to cleave the primer from the mature chain. Cellulose is also synthesised by tunicate animals, particularly in the tests of ascidians (where the cellulose was historically termed "tunicine" (tunicin)). Cellulolysis is the process of breaking down cellulose into smaller polysaccharides called cellodextrins or completely into glucose units; this is a hydrolysis reaction. Because cellulose molecules bind strongly to each other, cellulolysis is relatively difficult compared to the breakdown of other polysaccharides. However, this process can be significantly intensified in a proper solvent, e.g. in an ionic liquid. Most mammals have limited ability to digest dietary fiber such as cellulose. Some ruminants like cows and sheep contain certain symbiotic anaerobic bacteria (such as Cellulomonas and Ruminococcus spp.) in the flora of the rumen, and these bacteria produce enzymes called cellulases that hydrolyze cellulose. The breakdown products are then used by the bacteria for proliferation. The bacterial mass is later digested by the ruminant in its digestive system (stomach and small intestine). Horses use cellulose in their diet by fermentation in their hindgut. Some termites contain in their hindguts certain flagellate protozoa producing such enzymes, whereas others contain bacteria or may produce cellulase. The enzymes used to cleave the glycosidic linkage in cellulose are glycoside hydrolases including endo-acting cellulases and exo-acting glucosidases. Such enzymes are usually secreted as part of multienzyme complexes that may include dockerins and carbohydrate-binding modules. At temperatures above 350 °C, cellulose undergoes thermolysis (also called 'pyrolysis'), decomposing into solid char, vapors, aerosols, and gases such as carbon dioxide. Maximum yield of vapors which condense to a liquid called bio-oil is obtained at 500 °C. Semi-crystalline cellulose polymers react at pyrolysis temperatures (350–600 °C) in a few seconds; this transformation has been shown to occur via a solid-to-liquid-to-vapor transition, with the liquid (called intermediate liquid cellulose or molten cellulose) existing for only a fraction of a second. Glycosidic bond cleavage produces short cellulose chains of two-to-seven monomers comprising the melt. Vapor bubbling of intermediate liquid cellulose produces aerosols, which consist of short chain anhydro-oligomers derived from the melt. Continuing decomposition of molten cellulose produces volatile compounds including levoglucosan, furans, pyrans, light oxygenates, and gases via primary reactions. Within thick cellulose samples, volatile compounds such as levoglucosan undergo 'secondary reactions' to volatile products including pyrans and light oxygenates such as glycolaldehyde. Hemicelluloses are polysaccharides related to cellulose that comprises about 20% of the biomass of land plants. In contrast to cellulose, hemicelluloses are derived from several sugars in addition to glucose, especially xylose but also including mannose, galactose, rhamnose, and arabinose. Hemicelluloses consist of shorter chains – between 500 and 3000 sugar units. Furthermore, hemicelluloses are branched, whereas cellulose is unbranched. Cellulose is soluble in several kinds of media, several of which are the basis of commercial technologies. These dissolution processes are reversible and are used in the production of regenerated celluloses (such as viscose and cellophane) from dissolving pulp. The most important solubilizing agent is carbon disulfide in the presence of alkali. Other agents include Schweizer's reagent, N-methylmorpholine N-oxide, and lithium chloride in dimethylacetamide. In general, these agents modify the cellulose, rendering it soluble. The agents are then removed concomitant with the formation of fibers. Cellulose is also soluble in many kinds of ionic liquids. The history of regenerated cellulose is often cited as beginning with George Audemars, who first manufactured regenerated nitrocellulose fibers in 1855. Although these fibers were soft and strong -resembling silk- they had the drawback of being highly flammable. Hilaire de Chardonnet perfected production of nitrocellulose fibers, but manufacturing of these fibers by his process was relatively uneconomical. In 1890, L.H. Despeissis invented the cuprammonium process – which uses a cuprammonium solution to solubilize cellulose – a method still used today for production of artificial silk. In 1891, it was discovered that treatment of cellulose with alkali and carbon disulfide generated a soluble cellulose derivative known as viscose. This process, patented by the founders of the Viscose Development Company, is the most widely used method for manufacturing regenerated cellulose products. Courtaulds purchased the patents for this process in 1904, leading to significant growth of viscose fiber production. By 1931, expiration of patents for the viscose process led to its adoption worldwide. Global production of regenerated cellulose fiber peaked in 1973 at 3,856,000 tons. Regenerated cellulose can be used to manufacture a wide variety of products. While the first application of regenerated cellulose was as a clothing textile, this class of materials is also used in the production of disposable medical devices as well as fabrication of artificial membranes. The hydroxyl groups (−OH) of cellulose can be partially or fully reacted with various reagents to afford derivatives with useful properties like mainly cellulose esters and cellulose ethers (−OR). In principle, although not always in current industrial practice, cellulosic polymers are renewable resources. Ester derivatives include: Cellulose acetate and cellulose triacetate are film- and fiber-forming materials that find a variety of uses. Nitrocellulose was initially used as an explosive and was an early film forming material. When plasticized with camphor, nitrocellulose gives celluloid. Cellulose Ether derivatives include: The sodium carboxymethyl cellulose can be cross-linked to give the croscarmellose sodium (E468) for use as a disintegrant in pharmaceutical formulations. Furthermore, by the covalent attachment of thiol groups to cellulose ethers such as sodium carboxymethyl cellulose, ethyl cellulose or hydroxyethyl cellulose mucoadhesive and permeation enhancing properties can be introduced. Thiolated cellulose derivatives (see thiomers) exhibit also high binding properties for metal ions. Cellulose for industrial use is mainly obtained from wood pulp and from cotton. Energy crops: The major combustible component of non-food energy crops is cellulose, with lignin second. Non-food energy crops produce more usable energy than edible energy crops (which have a large starch component), but still compete with food crops for agricultural land and water resources. Typical non-food energy crops include industrial hemp, switchgrass, Miscanthus, Salix (willow), and Populus (poplar) species. A strain of Clostridium bacteria found in zebra dung, can convert nearly any form of cellulose into butanol fuel. Another possible application is as Insect repellents.	[ { "paragraph_id": 0, "text": "Cellulose is an organic compound with the formula (C6H10O5)n, a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units. Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes. Some species of bacteria secrete it to form biofilms. Cellulose is the most abundant organic polymer on Earth. The cellulose content of cotton fiber is 90%, that of wood is 40–50%, and that of dried hemp is approximately 57%.", "title": "" }, { "paragraph_id": 1, "text": "Cellulose is mainly used to produce paperboard and paper. Smaller quantities are converted into a wide variety of derivative products such as cellophane and rayon. Conversion of cellulose from energy crops into biofuels such as cellulosic ethanol is under development as a renewable fuel source. Cellulose for industrial use is mainly obtained from wood pulp and cotton.", "title": "" }, { "paragraph_id": 2, "text": "Some animals, particularly ruminants and termites, can digest cellulose with the help of symbiotic micro-organisms that live in their guts, such as Trichonympha. In human nutrition, cellulose is a non-digestible constituent of insoluble dietary fiber, acting as a hydrophilic bulking agent for feces and potentially aiding in defecation.", "title": "" }, { "paragraph_id": 3, "text": "Cellulose was discovered in 1838 by the French chemist Anselme Payen, who isolated it from plant matter and determined its chemical formula. Cellulose was used to produce the first successful thermoplastic polymer, celluloid, by Hyatt Manufacturing Company in 1870. Production of rayon (\"artificial silk\") from cellulose began in the 1890s and cellophane was invented in 1912. Hermann Staudinger determined the polymer structure of cellulose in 1920. The compound was first chemically synthesized (without the use of any biologically derived enzymes) in 1992, by Kobayashi and Shoda.", "title": "History" }, { "paragraph_id": 4, "text": "Cellulose has no taste, is odorless, is hydrophilic with the contact angle of 20–30 degrees, is insoluble in water and most organic solvents, is chiral and is biodegradable. It was shown to melt at 467 °C in pulse tests made by Dauenhauer et al. (2016). It can be broken down chemically into its glucose units by treating it with concentrated mineral acids at high temperature.", "title": "Structure and properties" }, { "paragraph_id": 5, "text": "Cellulose is derived from D-glucose units, which condense through β(1→4)-glycosidic bonds. This linkage motif contrasts with that for α(1→4)-glycosidic bonds present in starch and glycogen. Cellulose is a straight chain polymer. Unlike starch, no coiling or branching occurs and the molecule adopts an extended and rather stiff rod-like conformation, aided by the equatorial conformation of the glucose residues. The multiple hydroxyl groups on the glucose from one chain form hydrogen bonds with oxygen atoms on the same or on a neighbor chain, holding the chains firmly together side-by-side and forming microfibrils with high tensile strength. This confers tensile strength in cell walls where cellulose microfibrils are meshed into a polysaccharide matrix. The high tensile strength of plant stems and of the tree wood also arises from the arrangement of cellulose fibers intimately distributed into the lignin matrix. The mechanical role of cellulose fibers in the wood matrix responsible for its strong structural resistance, can somewhat be compared to that of the reinforcement bars in concrete, lignin playing here the role of the hardened cement paste acting as the \"glue\" in between the cellulose fibers. Mechanical properties of cellulose in primary plant cell wall are correlated with growth and expansion of plant cells. Live fluorescence microscopy techniques are promising in investigation of the role of cellulose in growing plant cells.", "title": "Structure and properties" }, { "paragraph_id": 6, "text": "Compared to starch, cellulose is also much more crystalline. Whereas starch undergoes a crystalline to amorphous transition when heated beyond 60–70 °C in water (as in cooking), cellulose requires a temperature of 320 °C and pressure of 25 MPa to become amorphous in water.", "title": "Structure and properties" }, { "paragraph_id": 7, "text": "Several types of cellulose are known. These forms are distinguished according to the location of hydrogen bonds between and within strands. Natural cellulose is cellulose I, with structures Iα and Iβ. Cellulose produced by bacteria and algae is enriched in Iα while cellulose of higher plants consists mainly of Iβ. Cellulose in regenerated cellulose fibers is cellulose II. The conversion of cellulose I to cellulose II is irreversible, suggesting that cellulose I is metastable and cellulose II is stable. With various chemical treatments it is possible to produce the structures cellulose III and cellulose IV.", "title": "Structure and properties" }, { "paragraph_id": 8, "text": "Many properties of cellulose depend on its chain length or degree of polymerization, the number of glucose units that make up one polymer molecule. Cellulose from wood pulp has typical chain lengths between 300 and 1700 units; cotton and other plant fibers as well as bacterial cellulose have chain lengths ranging from 800 to 10,000 units. Molecules with very small chain length resulting from the breakdown of cellulose are known as cellodextrins; in contrast to long-chain cellulose, cellodextrins are typically soluble in water and organic solvents.", "title": "Structure and properties" }, { "paragraph_id": 9, "text": "The chemical formula of cellulose is (C6H10O5)n where n is the degree of polymerization and represents the number of glucose groups.", "title": "Structure and properties" }, { "paragraph_id": 10, "text": "Plant-derived cellulose is usually found in a mixture with hemicellulose, lignin, pectin and other substances, while bacterial cellulose is quite pure, has a much higher water content and higher tensile strength due to higher chain lengths.", "title": "Structure and properties" }, { "paragraph_id": 11, "text": "Cellulose consists of fibrils with crystalline and amorphous regions. These cellulose fibrils may be individualized by mechanical treatment of cellulose pulp, often assisted by chemical oxidation or enzymatic treatment, yielding semi-flexible cellulose nanofibrils generally 200 nm to 1 μm in length depending on the treatment intensity. Cellulose pulp may also be treated with strong acid to hydrolyze the amorphous fibril regions, thereby producing short rigid cellulose nanocrystals a few 100 nm in length. These nanocelluloses are of high technological interest due to their self-assembly into cholesteric liquid crystals, production of hydrogels or aerogels, use in nanocomposites with superior thermal and mechanical properties, and use as Pickering stabilizers for emulsions.", "title": "Structure and properties" }, { "paragraph_id": 12, "text": "In plants cellulose is synthesized at the plasma membrane by rosette terminal complexes (RTCs). The RTCs are hexameric protein structures, approximately 25 nm in diameter, that contain the cellulose synthase enzymes that synthesise the individual cellulose chains. Each RTC floats in the cell's plasma membrane and \"spins\" a microfibril into the cell wall.", "title": "Processing" }, { "paragraph_id": 13, "text": "RTCs contain at least three different cellulose synthases, encoded by CesA (Ces is short for \"cellulose synthase\") genes, in an unknown stoichiometry. Separate sets of CesA genes are involved in primary and secondary cell wall biosynthesis. There are known to be about seven subfamilies in the plant CesA superfamily, some of which include the more cryptic, tentatively-named Csl (cellulose synthase-like) enzymes. These cellulose syntheses use UDP-glucose to form the β(1→4)-linked cellulose.", "title": "Processing" }, { "paragraph_id": 14, "text": "Bacterial cellulose is produced using the same family of proteins, although the gene is called BcsA for \"bacterial cellulose synthase\" or CelA for \"cellulose\" in many instances. In fact, plants acquired CesA from the endosymbiosis event that produced the chloroplast. All cellulose synthases known belongs to glucosyltransferase family 2 (GT2).", "title": "Processing" }, { "paragraph_id": 15, "text": "Cellulose synthesis requires chain initiation and elongation, and the two processes are separate. Cellulose synthase (CesA) initiates cellulose polymerization using a steroid primer, sitosterol-beta-glucoside, and UDP-glucose. It then utilizes UDP-D-glucose precursors to elongate the growing cellulose chain. A cellulase may function to cleave the primer from the mature chain.", "title": "Processing" }, { "paragraph_id": 16, "text": "Cellulose is also synthesised by tunicate animals, particularly in the tests of ascidians (where the cellulose was historically termed \"tunicine\" (tunicin)).", "title": "Processing" }, { "paragraph_id": 17, "text": "Cellulolysis is the process of breaking down cellulose into smaller polysaccharides called cellodextrins or completely into glucose units; this is a hydrolysis reaction. Because cellulose molecules bind strongly to each other, cellulolysis is relatively difficult compared to the breakdown of other polysaccharides. However, this process can be significantly intensified in a proper solvent, e.g. in an ionic liquid.", "title": "Processing" }, { "paragraph_id": 18, "text": "Most mammals have limited ability to digest dietary fiber such as cellulose. Some ruminants like cows and sheep contain certain symbiotic anaerobic bacteria (such as Cellulomonas and Ruminococcus spp.) in the flora of the rumen, and these bacteria produce enzymes called cellulases that hydrolyze cellulose. The breakdown products are then used by the bacteria for proliferation. The bacterial mass is later digested by the ruminant in its digestive system (stomach and small intestine). Horses use cellulose in their diet by fermentation in their hindgut. Some termites contain in their hindguts certain flagellate protozoa producing such enzymes, whereas others contain bacteria or may produce cellulase.", "title": "Processing" }, { "paragraph_id": 19, "text": "The enzymes used to cleave the glycosidic linkage in cellulose are glycoside hydrolases including endo-acting cellulases and exo-acting glucosidases. Such enzymes are usually secreted as part of multienzyme complexes that may include dockerins and carbohydrate-binding modules.", "title": "Processing" }, { "paragraph_id": 20, "text": "At temperatures above 350 °C, cellulose undergoes thermolysis (also called 'pyrolysis'), decomposing into solid char, vapors, aerosols, and gases such as carbon dioxide. Maximum yield of vapors which condense to a liquid called bio-oil is obtained at 500 °C.", "title": "Processing" }, { "paragraph_id": 21, "text": "Semi-crystalline cellulose polymers react at pyrolysis temperatures (350–600 °C) in a few seconds; this transformation has been shown to occur via a solid-to-liquid-to-vapor transition, with the liquid (called intermediate liquid cellulose or molten cellulose) existing for only a fraction of a second. Glycosidic bond cleavage produces short cellulose chains of two-to-seven monomers comprising the melt. Vapor bubbling of intermediate liquid cellulose produces aerosols, which consist of short chain anhydro-oligomers derived from the melt.", "title": "Processing" }, { "paragraph_id": 22, "text": "Continuing decomposition of molten cellulose produces volatile compounds including levoglucosan, furans, pyrans, light oxygenates, and gases via primary reactions. Within thick cellulose samples, volatile compounds such as levoglucosan undergo 'secondary reactions' to volatile products including pyrans and light oxygenates such as glycolaldehyde.", "title": "Processing" }, { "paragraph_id": 23, "text": "Hemicelluloses are polysaccharides related to cellulose that comprises about 20% of the biomass of land plants. In contrast to cellulose, hemicelluloses are derived from several sugars in addition to glucose, especially xylose but also including mannose, galactose, rhamnose, and arabinose. Hemicelluloses consist of shorter chains – between 500 and 3000 sugar units. Furthermore, hemicelluloses are branched, whereas cellulose is unbranched.", "title": "Hemicellulose" }, { "paragraph_id": 24, "text": "Cellulose is soluble in several kinds of media, several of which are the basis of commercial technologies. These dissolution processes are reversible and are used in the production of regenerated celluloses (such as viscose and cellophane) from dissolving pulp.", "title": "Regenerated cellulose" }, { "paragraph_id": 25, "text": "The most important solubilizing agent is carbon disulfide in the presence of alkali. Other agents include Schweizer's reagent, N-methylmorpholine N-oxide, and lithium chloride in dimethylacetamide. In general, these agents modify the cellulose, rendering it soluble. The agents are then removed concomitant with the formation of fibers. Cellulose is also soluble in many kinds of ionic liquids.", "title": "Regenerated cellulose" }, { "paragraph_id": 26, "text": "The history of regenerated cellulose is often cited as beginning with George Audemars, who first manufactured regenerated nitrocellulose fibers in 1855. Although these fibers were soft and strong -resembling silk- they had the drawback of being highly flammable. Hilaire de Chardonnet perfected production of nitrocellulose fibers, but manufacturing of these fibers by his process was relatively uneconomical. In 1890, L.H. Despeissis invented the cuprammonium process – which uses a cuprammonium solution to solubilize cellulose – a method still used today for production of artificial silk. In 1891, it was discovered that treatment of cellulose with alkali and carbon disulfide generated a soluble cellulose derivative known as viscose. This process, patented by the founders of the Viscose Development Company, is the most widely used method for manufacturing regenerated cellulose products. Courtaulds purchased the patents for this process in 1904, leading to significant growth of viscose fiber production. By 1931, expiration of patents for the viscose process led to its adoption worldwide. Global production of regenerated cellulose fiber peaked in 1973 at 3,856,000 tons.", "title": "Regenerated cellulose" }, { "paragraph_id": 27, "text": "Regenerated cellulose can be used to manufacture a wide variety of products. While the first application of regenerated cellulose was as a clothing textile, this class of materials is also used in the production of disposable medical devices as well as fabrication of artificial membranes.", "title": "Regenerated cellulose" }, { "paragraph_id": 28, "text": "The hydroxyl groups (−OH) of cellulose can be partially or fully reacted with various reagents to afford derivatives with useful properties like mainly cellulose esters and cellulose ethers (−OR). In principle, although not always in current industrial practice, cellulosic polymers are renewable resources.", "title": "Cellulose esters and ethers" }, { "paragraph_id": 29, "text": "Ester derivatives include:", "title": "Cellulose esters and ethers" }, { "paragraph_id": 30, "text": "Cellulose acetate and cellulose triacetate are film- and fiber-forming materials that find a variety of uses. Nitrocellulose was initially used as an explosive and was an early film forming material. When plasticized with camphor, nitrocellulose gives celluloid.", "title": "Cellulose esters and ethers" }, { "paragraph_id": 31, "text": "Cellulose Ether derivatives include:", "title": "Cellulose esters and ethers" }, { "paragraph_id": 32, "text": "The sodium carboxymethyl cellulose can be cross-linked to give the croscarmellose sodium (E468) for use as a disintegrant in pharmaceutical formulations. Furthermore, by the covalent attachment of thiol groups to cellulose ethers such as sodium carboxymethyl cellulose, ethyl cellulose or hydroxyethyl cellulose mucoadhesive and permeation enhancing properties can be introduced. Thiolated cellulose derivatives (see thiomers) exhibit also high binding properties for metal ions.", "title": "Cellulose esters and ethers" }, { "paragraph_id": 33, "text": "Cellulose for industrial use is mainly obtained from wood pulp and from cotton.", "title": "Commercial applications" }, { "paragraph_id": 34, "text": "Energy crops:", "title": "Commercial applications" }, { "paragraph_id": 35, "text": "The major combustible component of non-food energy crops is cellulose, with lignin second. Non-food energy crops produce more usable energy than edible energy crops (which have a large starch component), but still compete with food crops for agricultural land and water resources. Typical non-food energy crops include industrial hemp, switchgrass, Miscanthus, Salix (willow), and Populus (poplar) species. A strain of Clostridium bacteria found in zebra dung, can convert nearly any form of cellulose into butanol fuel.", "title": "Commercial applications" }, { "paragraph_id": 36, "text": "Another possible application is as Insect repellents.", "title": "Commercial applications" } ]	Cellulose is an organic compound with the formula (C6H10O5)n, a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units. Cellulose is an important structural component of the primary cell wall of green plants, many forms of algae and the oomycetes. Some species of bacteria secrete it to form biofilms. Cellulose is the most abundant organic polymer on Earth. The cellulose content of cotton fiber is 90%, that of wood is 40–50%, and that of dried hemp is approximately 57%. Cellulose is mainly used to produce paperboard and paper. Smaller quantities are converted into a wide variety of derivative products such as cellophane and rayon. Conversion of cellulose from energy crops into biofuels such as cellulosic ethanol is under development as a renewable fuel source. Cellulose for industrial use is mainly obtained from wood pulp and cotton. Some animals, particularly ruminants and termites, can digest cellulose with the help of symbiotic micro-organisms that live in their guts, such as Trichonympha. In human nutrition, cellulose is a non-digestible constituent of insoluble dietary fiber, acting as a hydrophilic bulking agent for feces and potentially aiding in defecation.	2001-10-26T14:33:44Z	2023-12-30T13:22:20Z	[ "Template:Main", "Template:Reflist", "Template:Paper", "Template:Rp", "Template:Webarchive", "Template:Cite web", "Template:Cite news", "Template:Cite EB1911", "Template:Authority control", "Template:Carbohydrates", "Template:Chem", "Template:See also", "Template:Cite book", "Template:Commons cat", "Template:Portal bar", "Template:Short description", "Template:Chembox", "Template:Cite journal", "Template:Google books", "Template:Wood products" ]	https://en.wikipedia.org/wiki/Cellulose
6,913	Cortez	Cortez may refer to:	[ { "paragraph_id": 0, "text": "Cortez may refer to:", "title": "" } ]	Cortez may refer to:	2001-10-26T18:22:41Z	2023-11-27T12:37:06Z	[ "Template:TOC right", "Template:Disambiguation" ]	https://en.wikipedia.org/wiki/Cortez
6,916	Colony	A colony is a territory subject to a form of foreign rule. Though dominated by the foreign colonizers, the rule remains separate to the original country of the colonizers, the metropolitan state (or "mother country"), which together have often been organized as colonial empires, particularly with the development of modern imperialism. This colonial administrative separation, though often blurred, makes colonies neither annexed or incorporated territories nor client states. Colonies contemporarily are identified and organized as not sufficiently self-governed dependent territories. Other past colonies have become either sufficiently incorporated and self-governed, or independent, with some to a varying degree dominated by remaining colonial settler societies or neocolonialism. The term colony originates from the ancient Roman colonia, a type of Roman settlement. Derived from colon-us (farmer, cultivator, planter, or settler), it carries with it the sense of 'farm' and 'landed estate'. Furthermore the term was used to refer to the older Greek apoikia (Ancient Greek: ἀποικία, lit. 'home away from home'), which were overseas settlements by ancient Greek city-states. The city that founded such a settlement became known as its metropolis ("mother-city"). Since early-modern times, historians, administrators, and political scientists have generally used the term "colony" to refer mainly to the many different overseas territories of particularly European states between the 15th and 20th centuries CE, with colonialism and decolonization as corresponding phenomena. While colonies often developed from trading outposts or territorial claims, such areas do not need to be a product of colonization, nor become colonially organized territories. Territories furthermore do not need to have been militarily conquered and occupied to come under colonial rule and to be considered de-facto colonies, instead neocolonial exploitation of dependency or imperialist use of power to intervene to force policy, might make a territory be considered a colony, which broadens the concept, including indirect rule or puppet states (contrasted by more independent types of client states such as vassal states). Subsequently some historians have used the term informal colony to refer to a country under a de facto control of another state. Though the broadening of the concept is often contentious. The word "colony" comes from the Latin word colōnia, used as concept for ancient Roman outposts and eventually cities. This in turn derives from the word colōnus, which was a Roman tenant farmer. The terminology is taken from architectural analogy, where a column pillar is beneath the (often stylized) head capital, which is also a biological analog of the body as subservient beneath the controlling head (with 'capital' coming from the Latin word caput, meaning 'head'). So colonies are not independently self-controlled, but rather are controlled by a separate entity that serves the capital function. Roman colonies first appeared when the Romans conquered neighbouring Italic peoples. These were small farming settlements that appeared when the Romans had subdued an enemy in war. Though a colony could take many forms, such as a trade outpost or a military base in enemy territory, such has not been inherently colonies. Its original definition as a settlement created by people migrating from a central region to an outlying one became the modern definition. Settlements that began as Roman colonia include cities from Cologne (which retains this history in its name), Belgrade to York. A tell-tale sign of a settlement within the Roman sphere of influence once being a Roman colony is a city centre with a grid pattern. The Special Committee on Decolonization maintains the United Nations list of non-self-governing territories, which identifies areas the United Nations (though not without controversy) believes are colonies. Given that dependent territories have varying degrees of autonomy and political power in the affairs of the controlling state, there is disagreement over the classification of "colony". Quotations related to colony at Wikiquote	[ { "paragraph_id": 0, "text": "A colony is a territory subject to a form of foreign rule. Though dominated by the foreign colonizers, the rule remains separate to the original country of the colonizers, the metropolitan state (or \"mother country\"), which together have often been organized as colonial empires, particularly with the development of modern imperialism. This colonial administrative separation, though often blurred, makes colonies neither annexed or incorporated territories nor client states. Colonies contemporarily are identified and organized as not sufficiently self-governed dependent territories. Other past colonies have become either sufficiently incorporated and self-governed, or independent, with some to a varying degree dominated by remaining colonial settler societies or neocolonialism.", "title": "" }, { "paragraph_id": 1, "text": "The term colony originates from the ancient Roman colonia, a type of Roman settlement. Derived from colon-us (farmer, cultivator, planter, or settler), it carries with it the sense of 'farm' and 'landed estate'. Furthermore the term was used to refer to the older Greek apoikia (Ancient Greek: ἀποικία, lit. 'home away from home'), which were overseas settlements by ancient Greek city-states. The city that founded such a settlement became known as its metropolis (\"mother-city\"). Since early-modern times, historians, administrators, and political scientists have generally used the term \"colony\" to refer mainly to the many different overseas territories of particularly European states between the 15th and 20th centuries CE, with colonialism and decolonization as corresponding phenomena.", "title": "" }, { "paragraph_id": 2, "text": "While colonies often developed from trading outposts or territorial claims, such areas do not need to be a product of colonization, nor become colonially organized territories. Territories furthermore do not need to have been militarily conquered and occupied to come under colonial rule and to be considered de-facto colonies, instead neocolonial exploitation of dependency or imperialist use of power to intervene to force policy, might make a territory be considered a colony, which broadens the concept, including indirect rule or puppet states (contrasted by more independent types of client states such as vassal states). Subsequently some historians have used the term informal colony to refer to a country under a de facto control of another state. Though the broadening of the concept is often contentious.", "title": "" }, { "paragraph_id": 3, "text": "The word \"colony\" comes from the Latin word colōnia, used as concept for ancient Roman outposts and eventually cities. This in turn derives from the word colōnus, which was a Roman tenant farmer.", "title": "Etymology" }, { "paragraph_id": 4, "text": "The terminology is taken from architectural analogy, where a column pillar is beneath the (often stylized) head capital, which is also a biological analog of the body as subservient beneath the controlling head (with 'capital' coming from the Latin word caput, meaning 'head'). So colonies are not independently self-controlled, but rather are controlled by a separate entity that serves the capital function.", "title": "Etymology" }, { "paragraph_id": 5, "text": "Roman colonies first appeared when the Romans conquered neighbouring Italic peoples. These were small farming settlements that appeared when the Romans had subdued an enemy in war. Though a colony could take many forms, such as a trade outpost or a military base in enemy territory, such has not been inherently colonies. Its original definition as a settlement created by people migrating from a central region to an outlying one became the modern definition.", "title": "Etymology" }, { "paragraph_id": 6, "text": "Settlements that began as Roman colonia include cities from Cologne (which retains this history in its name), Belgrade to York. A tell-tale sign of a settlement within the Roman sphere of influence once being a Roman colony is a city centre with a grid pattern.", "title": "Etymology" }, { "paragraph_id": 7, "text": "The Special Committee on Decolonization maintains the United Nations list of non-self-governing territories, which identifies areas the United Nations (though not without controversy) believes are colonies. Given that dependent territories have varying degrees of autonomy and political power in the affairs of the controlling state, there is disagreement over the classification of \"colony\".", "title": "Current colonies" }, { "paragraph_id": 8, "text": "Quotations related to colony at Wikiquote", "title": "External links" } ]	A colony is a territory subject to a form of foreign rule. Though dominated by the foreign colonizers, the rule remains separate to the original country of the colonizers, the metropolitan state, which together have often been organized as colonial empires, particularly with the development of modern imperialism. This colonial administrative separation, though often blurred, makes colonies neither annexed or incorporated territories nor client states. Colonies contemporarily are identified and organized as not sufficiently self-governed dependent territories. Other past colonies have become either sufficiently incorporated and self-governed, or independent, with some to a varying degree dominated by remaining colonial settler societies or neocolonialism. The term colony originates from the ancient Roman colonia, a type of Roman settlement. Derived from colon-us, it carries with it the sense of 'farm' and 'landed estate'. Furthermore the term was used to refer to the older Greek apoikia, which were overseas settlements by ancient Greek city-states. The city that founded such a settlement became known as its metropolis ("mother-city"). Since early-modern times, historians, administrators, and political scientists have generally used the term "colony" to refer mainly to the many different overseas territories of particularly European states between the 15th and 20th centuries CE, with colonialism and decolonization as corresponding phenomena. While colonies often developed from trading outposts or territorial claims, such areas do not need to be a product of colonization, nor become colonially organized territories. Territories furthermore do not need to have been militarily conquered and occupied to come under colonial rule and to be considered de-facto colonies, instead neocolonial exploitation of dependency or imperialist use of power to intervene to force policy, might make a territory be considered a colony, which broadens the concept, including indirect rule or puppet states. Subsequently some historians have used the term informal colony to refer to a country under a de facto control of another state. Though the broadening of the concept is often contentious.	2001-10-26T19:37:14Z	2024-01-01T00:18:53Z	[ "Template:Distinguish", "Template:Refn", "Template:Reflist", "Template:Autonomous types of first-tier administration", "Template:Wiktionary", "Template:For", "Template:More citations needed", "Template:As of", "Template:Main", "Template:Notelist", "Template:ISBN", "Template:Short description", "Template:Citation needed", "Template:Flag", "Template:Flagicon", "Template:Annotated link", "Template:About", "Template:Circa", "Template:Webarchive", "Template:Terms for types of administrative territorial entities", "Template:Politics", "Template:Efn", "Template:Cite book", "Template:Wikiquote-inline", "Template:Lang-grc", "Template:Colonization", "Template:Authority control", "Template:Lang", "Template:Further", "Template:See also", "Template:Cite web", "Template:Use dmy dates" ]	https://en.wikipedia.org/wiki/Colony
6,918	Rod (optical phenomenon)	In cryptozoology and ufology, "rods" (also known as "skyfish", "air rods", or "solar entities") are elongated visual artifacts appearing in photographic images and video recordings. Most optical analysis to date have concluded that the images are insects moving across the frame as the photo is being captured. Robert Todd Carroll (2003), having consulted an entomologist (Doug Yanega), identified rods as images of flying insects recorded over several cycles of wing-beating on video recording devices. The insect captured on image a number of times, while propelling itself forward, gives the illusion of a single elongated rod-like body, with bulges. A 2000 report by staff at "The Straight Dope" also explained rods as such phenomena, namely tricks of light which result from how (primarily video) images of flying insects are recorded and played back, adding that investigators have shown the rod-like bodies to be a result of motion blur, if the camera is shooting with relatively long exposure times. The claims of these being extraordinary creatures, possibly alien, have been advanced by either people with active imaginations, or hoaxers. In August 2005, China Central Television (CCTV) aired a two-part documentary about flying rods in China. It reported the events from May to June of the same year at Tonghua Zhenguo Pharmaceutical Company in Tonghua City, Jilin Province, which debunked the flying rods. Surveillance cameras in the facility's compound captured video footage of flying rods identical to those shown in Jose Escamilla's video. Getting no satisfactory answer to the phenomenon, curious scientists at the facility decided that they would try to solve the mystery by attempting to catch these airborne creatures. Huge nets were set up and the same surveillance cameras then captured images of rods flying into the trap. When the nets were inspected, the "rods" were no more than regular moths and other ordinary flying insects. Subsequent investigations proved that the appearance of flying rods on video was an optical illusion created by the slower recording speed of the camera. After attending a lecture by Jose Escamilla, UFO investigator Robert Sheaffer wrote that "some of his 'rods' were obviously insects zipping across the field at a high angular rate" and others appeared to be "appendages" which were birds' wings blurred by the camera exposure. Various paranormal interpretations of this phenomenon appear in popular culture. One of the more outspoken proponents of rods as alien life forms was Jose Escamilla, who claimed to have been the first to film them on March 19, 1994 in Roswell, New Mexico, while attempting to film a UFO. Escamilla later made additional videos and embarked on lecture tours to promote his claims.	[ { "paragraph_id": 0, "text": "In cryptozoology and ufology, \"rods\" (also known as \"skyfish\", \"air rods\", or \"solar entities\") are elongated visual artifacts appearing in photographic images and video recordings.", "title": "" }, { "paragraph_id": 1, "text": "Most optical analysis to date have concluded that the images are insects moving across the frame as the photo is being captured.", "title": "" }, { "paragraph_id": 2, "text": "Robert Todd Carroll (2003), having consulted an entomologist (Doug Yanega), identified rods as images of flying insects recorded over several cycles of wing-beating on video recording devices. The insect captured on image a number of times, while propelling itself forward, gives the illusion of a single elongated rod-like body, with bulges.", "title": "Optical analysis" }, { "paragraph_id": 3, "text": "A 2000 report by staff at \"The Straight Dope\" also explained rods as such phenomena, namely tricks of light which result from how (primarily video) images of flying insects are recorded and played back, adding that investigators have shown the rod-like bodies to be a result of motion blur, if the camera is shooting with relatively long exposure times.", "title": "Optical analysis" }, { "paragraph_id": 4, "text": "The claims of these being extraordinary creatures, possibly alien, have been advanced by either people with active imaginations, or hoaxers.", "title": "Optical analysis" }, { "paragraph_id": 5, "text": "In August 2005, China Central Television (CCTV) aired a two-part documentary about flying rods in China. It reported the events from May to June of the same year at Tonghua Zhenguo Pharmaceutical Company in Tonghua City, Jilin Province, which debunked the flying rods. Surveillance cameras in the facility's compound captured video footage of flying rods identical to those shown in Jose Escamilla's video. Getting no satisfactory answer to the phenomenon, curious scientists at the facility decided that they would try to solve the mystery by attempting to catch these airborne creatures. Huge nets were set up and the same surveillance cameras then captured images of rods flying into the trap. When the nets were inspected, the \"rods\" were no more than regular moths and other ordinary flying insects. Subsequent investigations proved that the appearance of flying rods on video was an optical illusion created by the slower recording speed of the camera.", "title": "Optical analysis" }, { "paragraph_id": 6, "text": "After attending a lecture by Jose Escamilla, UFO investigator Robert Sheaffer wrote that \"some of his 'rods' were obviously insects zipping across the field at a high angular rate\" and others appeared to be \"appendages\" which were birds' wings blurred by the camera exposure.", "title": "Optical analysis" }, { "paragraph_id": 7, "text": "Various paranormal interpretations of this phenomenon appear in popular culture. One of the more outspoken proponents of rods as alien life forms was Jose Escamilla, who claimed to have been the first to film them on March 19, 1994 in Roswell, New Mexico, while attempting to film a UFO. Escamilla later made additional videos and embarked on lecture tours to promote his claims.", "title": "Paranormal claims" } ]	In cryptozoology and ufology, "rods" are elongated visual artifacts appearing in photographic images and video recordings. Most optical analysis to date have concluded that the images are insects moving across the frame as the photo is being captured.	2001-10-26T20:18:30Z	2023-12-15T16:29:50Z	[ "Template:Skeptoid", "Template:Short description", "Template:Rewrite", "Template:Efn", "Template:Notelist", "Template:Reflist", "Template:Cite book", "Template:Cite web" ]	https://en.wikipedia.org/wiki/Rod_(optical_phenomenon)
6,920	Column	A column or pillar in architecture and structural engineering is a structural element that transmits, through compression, the weight of the structure above to other structural elements below. In other words, a column is a compression member. The term column applies especially to a large round support (the shaft of the column) with a capital and a base or pedestal, which is made of stone, or appearing to be so. A small wooden or metal support is typically called a post. Supports with a rectangular or other non-round section are usually called piers. For the purpose of wind or earthquake engineering, columns may be designed to resist lateral forces. Other compression members are often termed "columns" because of the similar stress conditions. Columns are frequently used to support beams or arches on which the upper parts of walls or ceilings rest. In architecture, "column" refers to such a structural element that also has certain proportional and decorative features. A column might also be a decorative element not needed for structural purposes; many columns are engaged, that is to say form part of a wall. A long sequence of columns joined by an entablature is known as a colonnade. All significant Iron Age civilizations of the Near East and Mediterranean made some use of columns. In ancient Egyptian architecture as early as 2600 BC, the architect Imhotep made use of stone columns whose surface was carved to reflect the organic form of bundled reeds, like papyrus, lotus and palm. In later Egyptian architecture faceted cylinders were also common. Their form is thought to derive from archaic reed-built shrines. Carved from stone, the columns were highly decorated with carved and painted hieroglyphs, texts, ritual imagery and natural motifs. Egyptian columns are famously present in the Great Hypostyle Hall of Karnak (circa 1224 BC), where 134 columns are lined up in sixteen rows, with some columns reaching heights of 24 metres. One of the most important type are the papyriform columns. The origin of these columns goes back to the 5th Dynasty. They are composed of lotus (papyrus) stems which are drawn together into a bundle decorated with bands: the capital, instead of opening out into the shape of a bellflower, swells out and then narrows again like a flower in bud. The base, which tapers to take the shape of a half-sphere like the stem of the lotus, has a continuously recurring decoration of stipules. The Minoans used whole tree-trunks, usually turned upside down in order to prevent re-growth, stood on a base set in the stylobate (floor base) and topped by a simple round capital. These were then painted as in the most famous Minoan palace of Knossos. The Minoans employed columns to create large open-plan spaces, light-wells and as a focal point for religious rituals. These traditions were continued by the later Mycenaean civilization, particularly in the megaron or hall at the heart of their palaces. The importance of columns and their reference to palaces and therefore authority is evidenced in their use in heraldic motifs such as the famous lion-gate of Mycenae where two lions stand each side of a column. Being made of wood these early columns have not survived, but their stone bases have and through these we may see their use and arrangement in these palace buildings. The Egyptians, Persians and other civilizations mostly used columns for the practical purpose of holding up the roof inside a building, preferring outside walls to be decorated with reliefs or painting, but the Ancient Greeks, followed by the Romans, loved to use them on the outside as well, and the extensive use of columns on the interior and exterior of buildings is one of the most characteristic features of classical architecture, in buildings like the Parthenon. The Greeks developed the classical orders of architecture, which are most easily distinguished by the form of the column and its various elements. Their Doric, Ionic, and Corinthian orders were expanded by the Romans to include the Tuscan and Composite orders. Some of the most elaborate columns in the ancient world were those of the Persians, especially the massive stone columns erected in Persepolis. They included double-bull structures in their capitals. The Hall of Hundred Columns at Persepolis, measuring 70 × 70 metres, was built by the Achaemenid king Darius I (524–486 BC). Many of the ancient Persian columns are standing, some being more than 30 metres tall. Tall columns with bull's head capitals were used for porticoes and to support the roofs of the hypostylehall, partly inspired by the ancient Egyptian precedent. Since the columns carried timber beams rather than stone, they could be taller, slimmer and more widely spaced than Egyptian ones. Columns, or at least large structural exterior ones, became much less significant in the architecture of the Middle Ages. The classical forms were abandoned in both Byzantine and Romanesque architecture in favour of more flexible forms, with capitals often using various types of foliage decoration, and in the West scenes with figures carved in relief. During the Romanesque period, builders continued to reuse and imitate ancient Roman columns wherever possible; where new, the emphasis was on elegance and beauty, as illustrated by twisted columns. Often they were decorated with mosaics. Renaissance architecture was keen to revive the classical vocabulary and styles, and the informed use and variation of the classical orders remained fundamental to the training of architects throughout Baroque, Rococo and Neo-classical architecture. Early columns were constructed of stone, some out of a single piece of stone. Monolithic columns are among the heaviest stones used in architecture. Other stone columns are created out of multiple sections of stone, mortared or dry-fit together. In many classical sites, sectioned columns were carved with a centre hole or depression so that they could be pegged together, using stone or metal pins. The design of most classical columns incorporates entasis (the inclusion of a slight outward curve in the sides) plus a reduction in diameter along the height of the column, so that the top is as little as 83% of the bottom diameter. This reduction mimics the parallax effects which the eye expects to see, and tends to make columns look taller and straighter than they are while entasis adds to that effect. There are flutes and fillets that run up the shaft of columns. The flute is the part of the column that is indented in with a semi circular shape. The fillet of the column is the part between each of the flutes on the Ionic order columns. The flute width changes on all tapered columns as it goes up the shaft and stays the same on all non tapered columns. This was done to the columns to add visual interest to them. The Ionic and the Corinthian are the only orders that have fillets and flutes. The Doric style has flutes but not fillets. Doric flutes are connected at a sharp point where the fillets are located on Ionic and Corinthian order columns. Most classical columns arise from a basis, or base, that rests on the stylobate, or foundation, except for those of the Doric order, which usually rest directly on the stylobate. The basis may consist of several elements, beginning with a wide, square slab known as a plinth. The simplest bases consist of the plinth alone, sometimes separated from the column by a convex circular cushion known as a torus. More elaborate bases include two toruses, separated by a concave section or channel known as a scotia or trochilus. Scotiae could also occur in pairs, separated by a convex section called an astragal, or bead, narrower than a torus. Sometimes these sections were accompanied by still narrower convex sections, known as annulets or fillets. At the top of the shaft is a capital, upon which the roof or other architectural elements rest. In the case of Doric columns, the capital usually consists of a round, tapering cushion, or echinus, supporting a square slab, known as an abax or abacus. Ionic capitals feature a pair of volutes, or scrolls, while Corinthian capitals are decorated with reliefs in the form of acanthus leaves. Either type of capital could be accompanied by the same moldings as the base. In the case of free-standing columns, the decorative elements atop the shaft are known as a finial. Modern columns may be constructed out of steel, poured or precast concrete, or brick, left bare or clad in an architectural covering, or veneer. Used to support an arch, an impost, or pier, is the topmost member of a column. The bottom-most part of the arch, called the springing, rests on the impost. As the axial load on a perfectly straight slender column with elastic material properties is increased in magnitude, this ideal column passes through three states: stable equilibrium, neutral equilibrium, and instability. The straight column under load is in stable equilibrium if a lateral force, applied between the two ends of the column, produces a small lateral deflection which disappears and the column returns to its straight form when the lateral force is removed. If the column load is gradually increased, a condition is reached in which the straight form of equilibrium becomes so-called neutral equilibrium, and a small lateral force will produce a deflection that does not disappear and the column remains in this slightly bent form when the lateral force is removed. The load at which neutral equilibrium of a column is reached is called the critical or buckling load. The state of instability is reached when a slight increase of the column load causes uncontrollably growing lateral deflections leading to complete collapse. For an axially loaded straight column with any end support conditions, the equation of static equilibrium, in the form of a differential equation, can be solved for the deflected shape and critical load of the column. With hinged, fixed or free end support conditions the deflected shape in neutral equilibrium of an initially straight column with uniform cross section throughout its length always follows a partial or composite sinusoidal curve shape, and the critical load is given by f c r ≡ π 2 E I m i n L 2 ( 1 ) {\displaystyle f_{cr}\equiv {\frac {\pi ^{2}{\textit {E}}I_{min}}{{L}^{2}}}\qquad (1)} where E = elastic modulus of the material, Imin = the minimal moment of inertia of the cross section, and L = actual length of the column between its two end supports. A variant of (1) is given by f c r ≡ π 2 E T ( K L r ) 2 ( 2 ) {\displaystyle f_{cr}\equiv {\frac {\pi ^{2}E_{T}}{({\frac {KL}{r}})^{2}}}\qquad (2)} where r = radius of gyration of column cross-section which is equal to the square root of (I/A), K = ratio of the longest half sine wave to the actual column length, Et = tangent modulus at the stress Fcr, and KL = effective length (length of an equivalent hinged-hinged column). From Equation (2) it can be noted that the buckling strength of a column is inversely proportional to the square of its length. When the critical stress, Fcr (Fcr =Pcr/A, where A = cross-sectional area of the column), is greater than the proportional limit of the material, the column is experiencing inelastic buckling. Since at this stress the slope of the material's stress-strain curve, Et (called the tangent modulus), is smaller than that below the proportional limit, the critical load at inelastic buckling is reduced. More complex formulas and procedures apply for such cases, but in its simplest form the critical buckling load formula is given as Equation (3), f c r ≡ F y − F y 2 4 π 2 E ( K L r 2 ) ( 3 ) {\displaystyle f_{cr}\equiv {F_{y}}-{\frac {F_{y}^{2}}{4\pi ^{2}E}}\left({\frac {KL}{r^{2}}}\right)\qquad (3)} A column with a cross section that lacks symmetry may suffer torsional buckling (sudden twisting) before, or in combination with, lateral buckling. The presence of the twisting deformations renders both theoretical analyses and practical designs rather complex. Eccentricity of the load, or imperfections such as initial crookedness, decreases column strength. If the axial load on the column is not concentric, that is, its line of action is not precisely coincident with the centroidal axis of the column, the column is characterized as eccentrically loaded. The eccentricity of the load, or an initial curvature, subjects the column to immediate bending. The increased stresses due to the combined axial-plus-flexural stresses result in a reduced load-carrying ability. Column elements are considered to be massive if their smallest side dimension is equal to or more than 400 mm. Massive columns have the ability to increase in carrying strength over long time periods (even during periods of heavy load). Taking into account the fact, that possible structural loads may increase over time as well (and also the threat of progressive failure), massive columns have an advantage compared to non-massive ones. When a column is too long to be built or transported in one piece, it has to be extended or spliced at the construction site. A reinforced concrete column is extended by having the steel reinforcing bars protrude a few inches or feet above the top of the concrete, then placing the next level of reinforcing bars to overlap, and pouring the concrete of the next level. A steel column is extended by welding or bolting splice plates on the flanges and webs or walls of the columns to provide a few inches or feet of load transfer from the upper to the lower column section. A timber column is usually extended by the use of a steel tube or wrapped-around sheet-metal plate bolted onto the two connecting timber sections. A column that carries the load down to a foundation must have means to transfer the load without overstressing the foundation material. Reinforced concrete and masonry columns are generally built directly on top of concrete foundations. When seated on a concrete foundation, a steel column must have a base plate to spread the load over a larger area, and thereby reduce the bearing pressure. The base plate is a thick, rectangular steel plate usually welded to the bottom end of the column. The Roman author Vitruvius, relying on the writings (now lost) of Greek authors, tells us that the ancient Greeks believed that their Doric order developed from techniques for building in wood. The earlier smoothed tree-trunk was replaced by a stone cylinder. The Doric order is the oldest and simplest of the classical orders. It is composed of a vertical cylinder that is wider at the bottom. It generally has neither a base nor a detailed capital. It is instead often topped with an inverted frustum of a shallow cone or a cylindrical band of carvings. It is often referred to as the masculine order because it is represented in the bottom level of the Colosseum and the Parthenon, and was therefore considered to be able to hold more weight. The height-to-thickness ratio is about 8:1. The shaft of a Doric Column is almost always fluted. The Greek Doric, developed in the western Dorian region of Greece, is the heaviest and most massive of the orders. It rises from the stylobate without any base; it is from four to six times as tall as its diameter; it has twenty broad flutes; the capital consists simply of a banded necking swelling out into a smooth echinus, which carries a flat square abacus; the Doric entablature is also the heaviest, being about one-fourth the height column. The Greek Doric order was not used after c. 100 B.C. until its “rediscovery” in the mid-eighteenth century. The Tuscan order, also known as Roman Doric, is also a simple design, the base and capital both being series of cylindrical disks of alternating diameter. The shaft is almost never fluted. The proportions vary, but are generally similar to Doric columns. Height to width ratio is about 7:1. The Ionic column is considerably more complex than the Doric or Tuscan. It usually has a base and the shaft is often fluted (it has grooves carved up its length). The capital features a volute, an ornament shaped like a scroll, at the four corners. The height-to-thickness ratio is around 9:1. Due to the more refined proportions and scroll capitals, the Ionic column is sometimes associated with academic buildings. Ionic style columns were used on the second level of the Colosseum. The Corinthian order is named for the Greek city-state of Corinth, to which it was connected in the period. However, according to the architectural historian Vitruvius, the column was created by the sculptor Callimachus, probably an Athenian, who drew acanthus leaves growing around a votive basket. In fact, the oldest known Corinthian capital was found in Bassae, dated at 427 BC. It is sometimes called the feminine order because it is on the top level of the Colosseum and holding up the least weight, and also has the slenderest ratio of thickness to height. Height to width ratio is about 10:1. The Composite order draws its name from the capital being a composite of the Ionic and Corinthian capitals. The acanthus of the Corinthian column already has a scroll-like element, so the distinction is sometimes subtle. Generally the Composite is similar to the Corinthian in proportion and employment, often in the upper tiers of colonnades. Height to width ratio is about 11:1 or 12:1. A Solomonic column, sometimes called "barley sugar", begins on a base and ends in a capital, which may be of any order, but the shaft twists in a tight spiral, producing a dramatic, serpentine effect of movement. Solomonic columns were developed in the ancient world, but remained rare there. A famous marble set, probably 2nd century, was brought to Old St. Peter's Basilica by Constantine I, and placed round the saint's shrine, and was thus familiar throughout the Middle Ages, by which time they were thought to have been removed from the Temple of Jerusalem. The style was used in bronze by Bernini for his spectacular St. Peter's baldachin, actually a ciborium (which displaced Constantine's columns), and thereafter became very popular with Baroque and Rococo church architects, above all in Latin America, where they were very often used, especially on a small scale, as they are easy to produce in wood by turning on a lathe (hence also the style's popularity for spindles on furniture and stairs). A Caryatid is a sculpted female figure serving as an architectural support taking the place of a column or a pillar supporting an entablature on her head. The Greek term karyatides literally means "maidens of Karyai", an ancient town of Peloponnese. In architecture, an engaged column is a column embedded in a wall and partly projecting from the surface of the wall, sometimes defined as semi or three-quarter detached. Engaged columns are rarely found in classical Greek architecture, and then only in exceptional cases, but in Roman architecture they exist in abundance, most commonly embedded in the cella walls of pseudoperipteral buildings. Pillar tombs are monumental graves, which typically feature a single, prominent pillar or column, often made of stone. A number of world cultures incorporated pillars into tomb structures. In the ancient Greek colony of Lycia in Anatolia, one of these edifices is located at the tomb of Xanthos. In the town of Hannassa in southern Somalia, ruins of houses with archways and courtyards have also been found along with other pillar tombs, including a rare octagonal tomb. Chisholm, Hugh, ed. (1911). "Engaged Column". Encyclopædia Britannica. 9 (11th ed.). Cambridge University Press. pp. 404–405. Stierlin, Henri The Roman Empire: From the Etruscans to the Decline of the Roman Empire, TASCHEN, 2002 Alderman, Liz (7 July 2014). "Acropolis Maidens Glow Anew". The New York Times. Retrieved 9 July 2014. Stokstad, Marilyn; Cothren, Michael (2014). Art History (Volume 1 ed.). New Jersey: Pearson Education, Inc. p. 110.	[ { "paragraph_id": 0, "text": "A column or pillar in architecture and structural engineering is a structural element that transmits, through compression, the weight of the structure above to other structural elements below. In other words, a column is a compression member. The term column applies especially to a large round support (the shaft of the column) with a capital and a base or pedestal, which is made of stone, or appearing to be so. A small wooden or metal support is typically called a post. Supports with a rectangular or other non-round section are usually called piers.", "title": "" }, { "paragraph_id": 1, "text": "For the purpose of wind or earthquake engineering, columns may be designed to resist lateral forces. Other compression members are often termed \"columns\" because of the similar stress conditions. Columns are frequently used to support beams or arches on which the upper parts of walls or ceilings rest. In architecture, \"column\" refers to such a structural element that also has certain proportional and decorative features. A column might also be a decorative element not needed for structural purposes; many columns are engaged, that is to say form part of a wall. A long sequence of columns joined by an entablature is known as a colonnade.", "title": "" }, { "paragraph_id": 2, "text": "All significant Iron Age civilizations of the Near East and Mediterranean made some use of columns.", "title": "History" }, { "paragraph_id": 3, "text": "In ancient Egyptian architecture as early as 2600 BC, the architect Imhotep made use of stone columns whose surface was carved to reflect the organic form of bundled reeds, like papyrus, lotus and palm. In later Egyptian architecture faceted cylinders were also common. Their form is thought to derive from archaic reed-built shrines. Carved from stone, the columns were highly decorated with carved and painted hieroglyphs, texts, ritual imagery and natural motifs. Egyptian columns are famously present in the Great Hypostyle Hall of Karnak (circa 1224 BC), where 134 columns are lined up in sixteen rows, with some columns reaching heights of 24 metres.", "title": "History" }, { "paragraph_id": 4, "text": "One of the most important type are the papyriform columns. The origin of these columns goes back to the 5th Dynasty. They are composed of lotus (papyrus) stems which are drawn together into a bundle decorated with bands: the capital, instead of opening out into the shape of a bellflower, swells out and then narrows again like a flower in bud. The base, which tapers to take the shape of a half-sphere like the stem of the lotus, has a continuously recurring decoration of stipules.", "title": "History" }, { "paragraph_id": 5, "text": "The Minoans used whole tree-trunks, usually turned upside down in order to prevent re-growth, stood on a base set in the stylobate (floor base) and topped by a simple round capital. These were then painted as in the most famous Minoan palace of Knossos. The Minoans employed columns to create large open-plan spaces, light-wells and as a focal point for religious rituals.", "title": "History" }, { "paragraph_id": 6, "text": "These traditions were continued by the later Mycenaean civilization, particularly in the megaron or hall at the heart of their palaces. The importance of columns and their reference to palaces and therefore authority is evidenced in their use in heraldic motifs such as the famous lion-gate of Mycenae where two lions stand each side of a column. Being made of wood these early columns have not survived, but their stone bases have and through these we may see their use and arrangement in these palace buildings.", "title": "History" }, { "paragraph_id": 7, "text": "The Egyptians, Persians and other civilizations mostly used columns for the practical purpose of holding up the roof inside a building, preferring outside walls to be decorated with reliefs or painting, but the Ancient Greeks, followed by the Romans, loved to use them on the outside as well, and the extensive use of columns on the interior and exterior of buildings is one of the most characteristic features of classical architecture, in buildings like the Parthenon. The Greeks developed the classical orders of architecture, which are most easily distinguished by the form of the column and its various elements. Their Doric, Ionic, and Corinthian orders were expanded by the Romans to include the Tuscan and Composite orders.", "title": "History" }, { "paragraph_id": 8, "text": "Some of the most elaborate columns in the ancient world were those of the Persians, especially the massive stone columns erected in Persepolis. They included double-bull structures in their capitals. The Hall of Hundred Columns at Persepolis, measuring 70 × 70 metres, was built by the Achaemenid king Darius I (524–486 BC). Many of the ancient Persian columns are standing, some being more than 30 metres tall. Tall columns with bull's head capitals were used for porticoes and to support the roofs of the hypostylehall, partly inspired by the ancient Egyptian precedent. Since the columns carried timber beams rather than stone, they could be taller, slimmer and more widely spaced than Egyptian ones.", "title": "History" }, { "paragraph_id": 9, "text": "Columns, or at least large structural exterior ones, became much less significant in the architecture of the Middle Ages. The classical forms were abandoned in both Byzantine and Romanesque architecture in favour of more flexible forms, with capitals often using various types of foliage decoration, and in the West scenes with figures carved in relief.", "title": "History" }, { "paragraph_id": 10, "text": "During the Romanesque period, builders continued to reuse and imitate ancient Roman columns wherever possible; where new, the emphasis was on elegance and beauty, as illustrated by twisted columns. Often they were decorated with mosaics.", "title": "History" }, { "paragraph_id": 11, "text": "Renaissance architecture was keen to revive the classical vocabulary and styles, and the informed use and variation of the classical orders remained fundamental to the training of architects throughout Baroque, Rococo and Neo-classical architecture.", "title": "History" }, { "paragraph_id": 12, "text": "Early columns were constructed of stone, some out of a single piece of stone. Monolithic columns are among the heaviest stones used in architecture. Other stone columns are created out of multiple sections of stone, mortared or dry-fit together. In many classical sites, sectioned columns were carved with a centre hole or depression so that they could be pegged together, using stone or metal pins. The design of most classical columns incorporates entasis (the inclusion of a slight outward curve in the sides) plus a reduction in diameter along the height of the column, so that the top is as little as 83% of the bottom diameter. This reduction mimics the parallax effects which the eye expects to see, and tends to make columns look taller and straighter than they are while entasis adds to that effect.", "title": "Structure" }, { "paragraph_id": 13, "text": "There are flutes and fillets that run up the shaft of columns. The flute is the part of the column that is indented in with a semi circular shape. The fillet of the column is the part between each of the flutes on the Ionic order columns. The flute width changes on all tapered columns as it goes up the shaft and stays the same on all non tapered columns. This was done to the columns to add visual interest to them. The Ionic and the Corinthian are the only orders that have fillets and flutes. The Doric style has flutes but not fillets. Doric flutes are connected at a sharp point where the fillets are located on Ionic and Corinthian order columns.", "title": "Structure" }, { "paragraph_id": 14, "text": "Most classical columns arise from a basis, or base, that rests on the stylobate, or foundation, except for those of the Doric order, which usually rest directly on the stylobate. The basis may consist of several elements, beginning with a wide, square slab known as a plinth. The simplest bases consist of the plinth alone, sometimes separated from the column by a convex circular cushion known as a torus. More elaborate bases include two toruses, separated by a concave section or channel known as a scotia or trochilus. Scotiae could also occur in pairs, separated by a convex section called an astragal, or bead, narrower than a torus. Sometimes these sections were accompanied by still narrower convex sections, known as annulets or fillets.", "title": "Structure" }, { "paragraph_id": 15, "text": "At the top of the shaft is a capital, upon which the roof or other architectural elements rest. In the case of Doric columns, the capital usually consists of a round, tapering cushion, or echinus, supporting a square slab, known as an abax or abacus. Ionic capitals feature a pair of volutes, or scrolls, while Corinthian capitals are decorated with reliefs in the form of acanthus leaves. Either type of capital could be accompanied by the same moldings as the base. In the case of free-standing columns, the decorative elements atop the shaft are known as a finial.", "title": "Structure" }, { "paragraph_id": 16, "text": "Modern columns may be constructed out of steel, poured or precast concrete, or brick, left bare or clad in an architectural covering, or veneer. Used to support an arch, an impost, or pier, is the topmost member of a column. The bottom-most part of the arch, called the springing, rests on the impost.", "title": "Structure" }, { "paragraph_id": 17, "text": "As the axial load on a perfectly straight slender column with elastic material properties is increased in magnitude, this ideal column passes through three states: stable equilibrium, neutral equilibrium, and instability. The straight column under load is in stable equilibrium if a lateral force, applied between the two ends of the column, produces a small lateral deflection which disappears and the column returns to its straight form when the lateral force is removed. If the column load is gradually increased, a condition is reached in which the straight form of equilibrium becomes so-called neutral equilibrium, and a small lateral force will produce a deflection that does not disappear and the column remains in this slightly bent form when the lateral force is removed. The load at which neutral equilibrium of a column is reached is called the critical or buckling load. The state of instability is reached when a slight increase of the column load causes uncontrollably growing lateral deflections leading to complete collapse.", "title": "Structure" }, { "paragraph_id": 18, "text": "For an axially loaded straight column with any end support conditions, the equation of static equilibrium, in the form of a differential equation, can be solved for the deflected shape and critical load of the column. With hinged, fixed or free end support conditions the deflected shape in neutral equilibrium of an initially straight column with uniform cross section throughout its length always follows a partial or composite sinusoidal curve shape, and the critical load is given by", "title": "Structure" }, { "paragraph_id": 19, "text": "f c r ≡ π 2 E I m i n L 2 ( 1 ) {\\displaystyle f_{cr}\\equiv {\\frac {\\pi ^{2}{\\textit {E}}I_{min}}{{L}^{2}}}\\qquad (1)}", "title": "Structure" }, { "paragraph_id": 20, "text": "where E = elastic modulus of the material, Imin = the minimal moment of inertia of the cross section, and L = actual length of the column between its two end supports. A variant of (1) is given by", "title": "Structure" }, { "paragraph_id": 21, "text": "f c r ≡ π 2 E T ( K L r ) 2 ( 2 ) {\\displaystyle f_{cr}\\equiv {\\frac {\\pi ^{2}E_{T}}{({\\frac {KL}{r}})^{2}}}\\qquad (2)}", "title": "Structure" }, { "paragraph_id": 22, "text": "where r = radius of gyration of column cross-section which is equal to the square root of (I/A), K = ratio of the longest half sine wave to the actual column length, Et = tangent modulus at the stress Fcr, and KL = effective length (length of an equivalent hinged-hinged column). From Equation (2) it can be noted that the buckling strength of a column is inversely proportional to the square of its length.", "title": "Structure" }, { "paragraph_id": 23, "text": "When the critical stress, Fcr (Fcr =Pcr/A, where A = cross-sectional area of the column), is greater than the proportional limit of the material, the column is experiencing inelastic buckling. Since at this stress the slope of the material's stress-strain curve, Et (called the tangent modulus), is smaller than that below the proportional limit, the critical load at inelastic buckling is reduced. More complex formulas and procedures apply for such cases, but in its simplest form the critical buckling load formula is given as Equation (3),", "title": "Structure" }, { "paragraph_id": 24, "text": "f c r ≡ F y − F y 2 4 π 2 E ( K L r 2 ) ( 3 ) {\\displaystyle f_{cr}\\equiv {F_{y}}-{\\frac {F_{y}^{2}}{4\\pi ^{2}E}}\\left({\\frac {KL}{r^{2}}}\\right)\\qquad (3)}", "title": "Structure" }, { "paragraph_id": 25, "text": "A column with a cross section that lacks symmetry may suffer torsional buckling (sudden twisting) before, or in combination with, lateral buckling. The presence of the twisting deformations renders both theoretical analyses and practical designs rather complex.", "title": "Structure" }, { "paragraph_id": 26, "text": "Eccentricity of the load, or imperfections such as initial crookedness, decreases column strength. If the axial load on the column is not concentric, that is, its line of action is not precisely coincident with the centroidal axis of the column, the column is characterized as eccentrically loaded. The eccentricity of the load, or an initial curvature, subjects the column to immediate bending. The increased stresses due to the combined axial-plus-flexural stresses result in a reduced load-carrying ability.", "title": "Structure" }, { "paragraph_id": 27, "text": "Column elements are considered to be massive if their smallest side dimension is equal to or more than 400 mm. Massive columns have the ability to increase in carrying strength over long time periods (even during periods of heavy load). Taking into account the fact, that possible structural loads may increase over time as well (and also the threat of progressive failure), massive columns have an advantage compared to non-massive ones.", "title": "Structure" }, { "paragraph_id": 28, "text": "When a column is too long to be built or transported in one piece, it has to be extended or spliced at the construction site. A reinforced concrete column is extended by having the steel reinforcing bars protrude a few inches or feet above the top of the concrete, then placing the next level of reinforcing bars to overlap, and pouring the concrete of the next level. A steel column is extended by welding or bolting splice plates on the flanges and webs or walls of the columns to provide a few inches or feet of load transfer from the upper to the lower column section. A timber column is usually extended by the use of a steel tube or wrapped-around sheet-metal plate bolted onto the two connecting timber sections.", "title": "Structure" }, { "paragraph_id": 29, "text": "A column that carries the load down to a foundation must have means to transfer the load without overstressing the foundation material. Reinforced concrete and masonry columns are generally built directly on top of concrete foundations. When seated on a concrete foundation, a steel column must have a base plate to spread the load over a larger area, and thereby reduce the bearing pressure. The base plate is a thick, rectangular steel plate usually welded to the bottom end of the column.", "title": "Structure" }, { "paragraph_id": 30, "text": "The Roman author Vitruvius, relying on the writings (now lost) of Greek authors, tells us that the ancient Greeks believed that their Doric order developed from techniques for building in wood. The earlier smoothed tree-trunk was replaced by a stone cylinder.", "title": "Orders" }, { "paragraph_id": 31, "text": "The Doric order is the oldest and simplest of the classical orders. It is composed of a vertical cylinder that is wider at the bottom. It generally has neither a base nor a detailed capital. It is instead often topped with an inverted frustum of a shallow cone or a cylindrical band of carvings. It is often referred to as the masculine order because it is represented in the bottom level of the Colosseum and the Parthenon, and was therefore considered to be able to hold more weight. The height-to-thickness ratio is about 8:1. The shaft of a Doric Column is almost always fluted.", "title": "Orders" }, { "paragraph_id": 32, "text": "The Greek Doric, developed in the western Dorian region of Greece, is the heaviest and most massive of the orders. It rises from the stylobate without any base; it is from four to six times as tall as its diameter; it has twenty broad flutes; the capital consists simply of a banded necking swelling out into a smooth echinus, which carries a flat square abacus; the Doric entablature is also the heaviest, being about one-fourth the height column. The Greek Doric order was not used after c. 100 B.C. until its “rediscovery” in the mid-eighteenth century.", "title": "Orders" }, { "paragraph_id": 33, "text": "The Tuscan order, also known as Roman Doric, is also a simple design, the base and capital both being series of cylindrical disks of alternating diameter. The shaft is almost never fluted. The proportions vary, but are generally similar to Doric columns. Height to width ratio is about 7:1.", "title": "Orders" }, { "paragraph_id": 34, "text": "The Ionic column is considerably more complex than the Doric or Tuscan. It usually has a base and the shaft is often fluted (it has grooves carved up its length). The capital features a volute, an ornament shaped like a scroll, at the four corners. The height-to-thickness ratio is around 9:1. Due to the more refined proportions and scroll capitals, the Ionic column is sometimes associated with academic buildings. Ionic style columns were used on the second level of the Colosseum.", "title": "Orders" }, { "paragraph_id": 35, "text": "The Corinthian order is named for the Greek city-state of Corinth, to which it was connected in the period. However, according to the architectural historian Vitruvius, the column was created by the sculptor Callimachus, probably an Athenian, who drew acanthus leaves growing around a votive basket. In fact, the oldest known Corinthian capital was found in Bassae, dated at 427 BC. It is sometimes called the feminine order because it is on the top level of the Colosseum and holding up the least weight, and also has the slenderest ratio of thickness to height. Height to width ratio is about 10:1.", "title": "Orders" }, { "paragraph_id": 36, "text": "The Composite order draws its name from the capital being a composite of the Ionic and Corinthian capitals. The acanthus of the Corinthian column already has a scroll-like element, so the distinction is sometimes subtle. Generally the Composite is similar to the Corinthian in proportion and employment, often in the upper tiers of colonnades. Height to width ratio is about 11:1 or 12:1.", "title": "Orders" }, { "paragraph_id": 37, "text": "A Solomonic column, sometimes called \"barley sugar\", begins on a base and ends in a capital, which may be of any order, but the shaft twists in a tight spiral, producing a dramatic, serpentine effect of movement. Solomonic columns were developed in the ancient world, but remained rare there. A famous marble set, probably 2nd century, was brought to Old St. Peter's Basilica by Constantine I, and placed round the saint's shrine, and was thus familiar throughout the Middle Ages, by which time they were thought to have been removed from the Temple of Jerusalem. The style was used in bronze by Bernini for his spectacular St. Peter's baldachin, actually a ciborium (which displaced Constantine's columns), and thereafter became very popular with Baroque and Rococo church architects, above all in Latin America, where they were very often used, especially on a small scale, as they are easy to produce in wood by turning on a lathe (hence also the style's popularity for spindles on furniture and stairs).", "title": "Orders" }, { "paragraph_id": 38, "text": "A Caryatid is a sculpted female figure serving as an architectural support taking the place of a column or a pillar supporting an entablature on her head. The Greek term karyatides literally means \"maidens of Karyai\", an ancient town of Peloponnese.", "title": "Orders" }, { "paragraph_id": 39, "text": "In architecture, an engaged column is a column embedded in a wall and partly projecting from the surface of the wall, sometimes defined as semi or three-quarter detached. Engaged columns are rarely found in classical Greek architecture, and then only in exceptional cases, but in Roman architecture they exist in abundance, most commonly embedded in the cella walls of pseudoperipteral buildings.", "title": "Orders" }, { "paragraph_id": 40, "text": "Pillar tombs are monumental graves, which typically feature a single, prominent pillar or column, often made of stone. A number of world cultures incorporated pillars into tomb structures. In the ancient Greek colony of Lycia in Anatolia, one of these edifices is located at the tomb of Xanthos. In the town of Hannassa in southern Somalia, ruins of houses with archways and courtyards have also been found along with other pillar tombs, including a rare octagonal tomb.", "title": "Pillar tombs" }, { "paragraph_id": 41, "text": "Chisholm, Hugh, ed. (1911). \"Engaged Column\". Encyclopædia Britannica. 9 (11th ed.). Cambridge University Press. pp. 404–405.", "title": "References" }, { "paragraph_id": 42, "text": "Stierlin, Henri The Roman Empire: From the Etruscans to the Decline of the Roman Empire, TASCHEN, 2002", "title": "References" }, { "paragraph_id": 43, "text": "Alderman, Liz (7 July 2014). \"Acropolis Maidens Glow Anew\". The New York Times. Retrieved 9 July 2014.", "title": "References" }, { "paragraph_id": 44, "text": "Stokstad, Marilyn; Cothren, Michael (2014). Art History (Volume 1 ed.). New Jersey: Pearson Education, Inc. p. 110.", "title": "References" } ]	A column or pillar in architecture and structural engineering is a structural element that transmits, through compression, the weight of the structure above to other structural elements below. In other words, a column is a compression member. The term column applies especially to a large round support with a capital and a base or pedestal, which is made of stone, or appearing to be so. A small wooden or metal support is typically called a post. Supports with a rectangular or other non-round section are usually called piers. For the purpose of wind or earthquake engineering, columns may be designed to resist lateral forces. Other compression members are often termed "columns" because of the similar stress conditions. Columns are frequently used to support beams or arches on which the upper parts of walls or ceilings rest. In architecture, "column" refers to such a structural element that also has certain proportional and decorative features. A column might also be a decorative element not needed for structural purposes; many columns are engaged, that is to say form part of a wall. A long sequence of columns joined by an entablature is known as a colonnade.	2002-02-11T16:48:08Z	2023-12-13T10:06:06Z	[ "Template:Multiple image", "Template:Citation needed", "Template:Div col", "Template:Authority control", "Template:Short description", "Template:More citations needed", "Template:Main", "Template:See also", "Template:Interlanguage link", "Template:Further", "Template:Cite book", "Template:Cite journal", "Template:Commonsinline", "Template:About", "Template:Cite web", "Template:Room", "Template:Redirect", "Template:Mechanical failure modes", "Template:Lang", "Template:Div col end", "Template:Reflist" ]	https://en.wikipedia.org/wiki/Column
6,921	Carmilla	Carmilla is an 1872 Gothic novella by Irish author Sheridan Le Fanu and one of the early works of vampire fiction, predating Bram Stoker's Dracula (1897) by 25 years. First published as a serial in The Dark Blue (1871–72), the story is narrated by a young woman preyed upon by a female vampire named Carmilla, later revealed to be Mircalla, Countess Karnstein. The character is a prototypical example of the lesbian vampire, expressing romantic desires toward the protagonist. The story is often anthologised, and has been adapted many times in film and other media. Carmilla, serialised in the literary magazine The Dark Blue in late 1871 and early 1872, was reprinted in Le Fanu's short-story collection In a Glass Darkly (1872). Comparing the work of two illustrators of the story, David Henry Friston and Michael Fitzgerald—whose work appears in the magazine article but not in modern printings of the book—reveals inconsistencies in the characters' depictions. Consequently, confusion has arisen relating the pictures to the plot. Isabella Mazzanti illustrated the book's 2014 edition, published by Editions Soleil and translated by Gaid Girard. Le Fanu presents the story as part of the casebook of Dr. Hesselius, whose departures from medical orthodoxy rank him as the first occult detective in literature. Laura, the teenaged protagonist, narrates, beginning with her childhood in a "picturesque and solitary" castle amid an extensive forest in Styria, where she lives with her father, a wealthy English widower retired from service to the Austrian Empire. When she was six, Laura had a vision of a very beautiful visitor in her bedchamber. She later claims to have been punctured in her breast, although no wound was found. All the household assure Laura that it was just a dream, but they step up security as well and there is no subsequent vision or visitation. Twelve years later, Laura and her father are admiring the sunset in front of the castle when her father tells her of a letter from his friend, General Spielsdorf. The General was supposed to visit them with his niece, Bertha Rheinfeldt, but Bertha suddenly died under mysterious circumstances. The General ambiguously concludes that he will discuss the circumstances in detail when they meet later. Laura, saddened by the loss of a potential friend, longs for a companion. A carriage accident outside Laura's home unexpectedly brings a girl of Laura's age into the family's care. Her name is Carmilla. Both girls instantly recognise each other from the "dream" they both had when they were young. Carmilla appears injured after her carriage accident, but her mysterious mother informs Laura's father that her journey is urgent and cannot be delayed. She arranges to leave her daughter with Laura and her father until she can return in three months. Before she leaves, she sternly notes that her daughter will not disclose any information whatsoever about her family, her past, or herself, and that Carmilla is of sound mind. Laura comments that this information seems needless to say, and her father laughs it off. Carmilla and Laura grow to be very close friends, but occasionally Carmilla's mood abruptly changes. She sometimes makes romantic advances towards Laura. Carmilla refuses to tell anything about herself, despite questioning by Laura. Her secrecy is not the only mysterious thing about Carmilla; she never joins the household in its prayers, she sleeps much of the day, and she seems to sleepwalk outside at night. Meanwhile, young women and girls in the nearby towns have begun dying from an unknown malady. When the funeral procession of one such victim passes by the two girls, Laura joins in the funeral hymn. Carmilla bursts out in rage and scolds Laura, complaining that the hymn hurts her ears. When a shipment of restored heirloom paintings arrives, Laura finds a portrait of her ancestor, Mircalla, Countess Karnstein, dated 1698. The portrait resembles Carmilla exactly, down to the mole on her neck. Carmilla suggests that she might be descended from the Karnsteins, though the family died out centuries before. During Carmilla's stay, Laura has nightmares of a large, cat-like beast entering her room. The beast springs onto the bed and Laura feels something like two needles, an inch or two apart, darting deep into her breast. The beast then takes the form of a female figure and disappears through the door without opening it. In another nightmare, Laura hears a voice say, "Your mother warns you to beware of the assassin," and a sudden light reveals Carmilla standing at the foot of her bed, her nightdress drenched in blood. Laura's health declines, and her father has a doctor examine her. He finds a small, blue spot, an inch or two below her collar, where the creature in her dream bit her, and speaks privately with her father, only asking that Laura never be unattended. Her father sets out with Laura, in a carriage, for the ruined village of Karnstein, three miles distant. They leave a message behind asking Carmilla and one of the governesses to follow once the perpetually late-sleeping Carmilla awakes. En route to Karnstein, Laura and her father encounter General Spielsdorf. He tells them his own ghastly story. At a costume ball, Spielsdorf and his niece Bertha had met a very beautiful young woman named Millarca and her enigmatic mother. Bertha was immediately taken with Millarca. The mother convinced the General that she was an old friend of his and asked that Millarca be allowed to stay with them for three weeks while she attended to a secret matter of great importance. Bertha fell mysteriously ill, suffering the same symptoms as Laura. After consulting with a specially ordered priestly doctor, the General realised that Bertha was being visited by a vampire. He hid with a sword and waited until a large, black creature of undefined shape crawled onto his niece's bed and spread itself onto her throat. He leapt from his hiding place and attacked the creature, which had then taken the form of Millarca. She fled through the locked door, unharmed. Bertha died before the morning dawned. Upon arriving at Karnstein, the General asks a woodman where he can find the tomb of Mircalla Karnstein. The woodman says the tomb was relocated long ago by a Moravian nobleman who vanquished the vampires haunting the region. While the General and Laura are alone in the ruined chapel, Carmilla appears. The General and Carmilla both fly into a rage upon seeing each other, and the General attacks her with an axe. Carmilla disarms the General and disappears. The General explains that Carmilla is also Millarca, both anagrams for the original name of the vampire Mircalla, Countess Karnstein. The party is joined by Baron Vordenburg, the descendant of the hero who rid the area of vampires long ago. Vordenburg, an authority on vampires, has discovered that his ancestor was romantically involved with the Countess Karnstein before she died. Using his forefather's notes, he locates Mircalla's hidden tomb. An imperial commission exhumes the body of Mircalla. Immersed in blood, it seems to be breathing faintly, its heart beating, its eyes open. A stake is driven through its heart, and it gives a corresponding shriek; then, the head is struck off. The body and head are burned to ashes, which are thrown into a river. Afterwards, Laura's father takes his daughter on a year-long tour through Italy to regain her health and recover from the trauma, but she never fully does. “Carmilla” exhibits the primary characteristics of Gothic fiction. It includes a supernatural figure, a dark setting of an old castle, a mysterious atmosphere, and ominous or superstitious elements. In the novella, Le Fanu abolishes the Victorian view of women as merely useful possessions of men, relying on them and needing their constant guardianship. The male characters of the story, such as Laura's father and General Spielsdorf, are exposed as being the opposite of the putative Victorian males – helpless and unproductive. The nameless father reaches an agreement with Carmilla's mother, whereas Spielsdorf cannot control the faith of his niece, Bertha. Both of these scenes portray women as equal, if not superior to men. This female empowerment is even more threatening to men if we consider Carmilla's vampiric predecessors and their relationship with their prey. Carmilla is the opposite of those male vampires – she is actually involved with her victims both emotionally and (theoretically) sexually. Moreover, she is able to exceed even more limitations by dominating death. In the end, her immortality is suggested to be sustained by the river where her ashes had been scattered. Le Fanu also departs from the negative idea of female parasitism and lesbianism by depicting a mutual and irresistible connection between Carmilla and Laura. The latter, along with other female characters, becomes a symbol of all Victorian women – restrained and judged for their emotional reflexes. The ambiguity of Laura's speech and behaviour reveals her struggles with being fully expressive of her concerns and desires. Another important element of “Carmilla” is the concept of dualism presented through the juxtaposition of vampire and human, as well as lesbian and heterosexual. It is also vivid in Laura's irresolution, since she "feels both attraction and repulsion" towards Carmilla. The duality of Carmilla's character is suggested by her human attributes, the lack of predatory demeanour, and her shared experience with Laura. According to Gabriella Jönsson, Carmilla can be seen as a representation of the dark side of all mankind. As with Dracula, critics have looked for the sources used in the writing of Carmilla. One source used was from a dissertation on magic, vampires, and the apparitions of spirits written by Dom Augustin Calmet entitled Traité sur les apparitions des esprits et sur les vampires ou les revenants de Hongrie, de Moravie, &c. (1751). This is evidenced by a report analysed by Calmet, from a priest who learned information of a town being tormented by a vampiric entity three years earlier. Having travelled to the town to investigate and collecting information of the various inhabitants there, the priest learned that a vampire had tormented many of the inhabitants at night by coming from the nearby cemetery and would haunt many of the residents on their beds. An unknown Hungarian traveller came to the town during this period and helped the town by setting a trap at the cemetery and decapitating the vampire that resided there, curing the town of their torment. This story was retold by Le Fanu and adapted into the thirteenth chapter of Carmilla. According to Matthew Gibson, the Reverend Sabine Baring-Gould's The Book of Were-wolves (1863) and his account of Elizabeth Báthory, Coleridge's Christabel (Part 1, 1797 and Part 2, 1800), and Captain Basil Hall's Schloss Hainfeld; or a Winter in Lower Styria (London and Edinburgh, 1836) are other sources for Le Fanu's Carmilla. Hall's account provides much of the Styrian background and, in particular, a model for both Carmilla and Laura in the figure of Jane Anne Cranstoun, Countess Purgstall. Carmilla, the title character, is the original prototype for a legion of female and lesbian vampires. Although Le Fanu portrays his vampire's sexuality with the circumspection that one would expect for his time, lesbian attraction evidently is the main dynamic between Carmilla and the narrator of the story: Sometimes after an hour of apathy, my strange and beautiful companion would take my hand and hold it with a fond pressure, renewed again and again; blushing softly, gazing in my face with languid and burning eyes, and breathing so fast that her dress rose and fell with the tumultuous respiration. It was like the ardour of a lover; it embarrassed me; it was hateful and yet overpowering; and with gloating eyes she drew me to her, and her hot lips travelled along my cheek in kisses; and she would whisper, almost in sobs, "You are mine, you shall be mine, and you and I are one for ever." (Carmilla, Chapter 4). When compared to other literary vampires of the 19th century, Carmilla is a similar product of a culture with strict sexual mores and tangible religious fear. While Carmilla selected exclusively female victims, she only becomes emotionally involved with a few. Carmilla had nocturnal habits, but was not confined to the darkness. She had unearthly beauty, and was able to change her form and to pass through solid walls. Her animal alter ego was a monstrous black cat, not a large dog as in Dracula. She did, however, sleep in a coffin. Carmilla works as a Gothic horror story because her victims are portrayed as succumbing to a perverse and unholy temptation that has severe metaphysical consequences for them. Some critics, among them William Veeder, suggest that Carmilla, notably in its outlandish use of narrative frames, was an important influence on Henry James' The Turn of the Screw (1898). Le Fanu's work has been noted as an influence on Bram Stoker's masterwork of the genre, Dracula:	[ { "paragraph_id": 0, "text": "Carmilla is an 1872 Gothic novella by Irish author Sheridan Le Fanu and one of the early works of vampire fiction, predating Bram Stoker's Dracula (1897) by 25 years. First published as a serial in The Dark Blue (1871–72), the story is narrated by a young woman preyed upon by a female vampire named Carmilla, later revealed to be Mircalla, Countess Karnstein. The character is a prototypical example of the lesbian vampire, expressing romantic desires toward the protagonist. The story is often anthologised, and has been adapted many times in film and other media.", "title": "" }, { "paragraph_id": 1, "text": "Carmilla, serialised in the literary magazine The Dark Blue in late 1871 and early 1872, was reprinted in Le Fanu's short-story collection In a Glass Darkly (1872). Comparing the work of two illustrators of the story, David Henry Friston and Michael Fitzgerald—whose work appears in the magazine article but not in modern printings of the book—reveals inconsistencies in the characters' depictions. Consequently, confusion has arisen relating the pictures to the plot. Isabella Mazzanti illustrated the book's 2014 edition, published by Editions Soleil and translated by Gaid Girard.", "title": "Publication" }, { "paragraph_id": 2, "text": "Le Fanu presents the story as part of the casebook of Dr. Hesselius, whose departures from medical orthodoxy rank him as the first occult detective in literature.", "title": "Plot summary" }, { "paragraph_id": 3, "text": "Laura, the teenaged protagonist, narrates, beginning with her childhood in a \"picturesque and solitary\" castle amid an extensive forest in Styria, where she lives with her father, a wealthy English widower retired from service to the Austrian Empire. When she was six, Laura had a vision of a very beautiful visitor in her bedchamber. She later claims to have been punctured in her breast, although no wound was found. All the household assure Laura that it was just a dream, but they step up security as well and there is no subsequent vision or visitation.", "title": "Plot summary" }, { "paragraph_id": 4, "text": "Twelve years later, Laura and her father are admiring the sunset in front of the castle when her father tells her of a letter from his friend, General Spielsdorf. The General was supposed to visit them with his niece, Bertha Rheinfeldt, but Bertha suddenly died under mysterious circumstances. The General ambiguously concludes that he will discuss the circumstances in detail when they meet later.", "title": "Plot summary" }, { "paragraph_id": 5, "text": "Laura, saddened by the loss of a potential friend, longs for a companion. A carriage accident outside Laura's home unexpectedly brings a girl of Laura's age into the family's care. Her name is Carmilla. Both girls instantly recognise each other from the \"dream\" they both had when they were young.", "title": "Plot summary" }, { "paragraph_id": 6, "text": "Carmilla appears injured after her carriage accident, but her mysterious mother informs Laura's father that her journey is urgent and cannot be delayed. She arranges to leave her daughter with Laura and her father until she can return in three months. Before she leaves, she sternly notes that her daughter will not disclose any information whatsoever about her family, her past, or herself, and that Carmilla is of sound mind. Laura comments that this information seems needless to say, and her father laughs it off.", "title": "Plot summary" }, { "paragraph_id": 7, "text": "Carmilla and Laura grow to be very close friends, but occasionally Carmilla's mood abruptly changes. She sometimes makes romantic advances towards Laura. Carmilla refuses to tell anything about herself, despite questioning by Laura. Her secrecy is not the only mysterious thing about Carmilla; she never joins the household in its prayers, she sleeps much of the day, and she seems to sleepwalk outside at night.", "title": "Plot summary" }, { "paragraph_id": 8, "text": "Meanwhile, young women and girls in the nearby towns have begun dying from an unknown malady. When the funeral procession of one such victim passes by the two girls, Laura joins in the funeral hymn. Carmilla bursts out in rage and scolds Laura, complaining that the hymn hurts her ears.", "title": "Plot summary" }, { "paragraph_id": 9, "text": "When a shipment of restored heirloom paintings arrives, Laura finds a portrait of her ancestor, Mircalla, Countess Karnstein, dated 1698. The portrait resembles Carmilla exactly, down to the mole on her neck. Carmilla suggests that she might be descended from the Karnsteins, though the family died out centuries before.", "title": "Plot summary" }, { "paragraph_id": 10, "text": "During Carmilla's stay, Laura has nightmares of a large, cat-like beast entering her room. The beast springs onto the bed and Laura feels something like two needles, an inch or two apart, darting deep into her breast. The beast then takes the form of a female figure and disappears through the door without opening it. In another nightmare, Laura hears a voice say, \"Your mother warns you to beware of the assassin,\" and a sudden light reveals Carmilla standing at the foot of her bed, her nightdress drenched in blood. Laura's health declines, and her father has a doctor examine her. He finds a small, blue spot, an inch or two below her collar, where the creature in her dream bit her, and speaks privately with her father, only asking that Laura never be unattended.", "title": "Plot summary" }, { "paragraph_id": 11, "text": "Her father sets out with Laura, in a carriage, for the ruined village of Karnstein, three miles distant. They leave a message behind asking Carmilla and one of the governesses to follow once the perpetually late-sleeping Carmilla awakes. En route to Karnstein, Laura and her father encounter General Spielsdorf. He tells them his own ghastly story.", "title": "Plot summary" }, { "paragraph_id": 12, "text": "At a costume ball, Spielsdorf and his niece Bertha had met a very beautiful young woman named Millarca and her enigmatic mother. Bertha was immediately taken with Millarca. The mother convinced the General that she was an old friend of his and asked that Millarca be allowed to stay with them for three weeks while she attended to a secret matter of great importance.", "title": "Plot summary" }, { "paragraph_id": 13, "text": "Bertha fell mysteriously ill, suffering the same symptoms as Laura. After consulting with a specially ordered priestly doctor, the General realised that Bertha was being visited by a vampire. He hid with a sword and waited until a large, black creature of undefined shape crawled onto his niece's bed and spread itself onto her throat. He leapt from his hiding place and attacked the creature, which had then taken the form of Millarca. She fled through the locked door, unharmed. Bertha died before the morning dawned.", "title": "Plot summary" }, { "paragraph_id": 14, "text": "Upon arriving at Karnstein, the General asks a woodman where he can find the tomb of Mircalla Karnstein. The woodman says the tomb was relocated long ago by a Moravian nobleman who vanquished the vampires haunting the region.", "title": "Plot summary" }, { "paragraph_id": 15, "text": "While the General and Laura are alone in the ruined chapel, Carmilla appears. The General and Carmilla both fly into a rage upon seeing each other, and the General attacks her with an axe. Carmilla disarms the General and disappears. The General explains that Carmilla is also Millarca, both anagrams for the original name of the vampire Mircalla, Countess Karnstein.", "title": "Plot summary" }, { "paragraph_id": 16, "text": "The party is joined by Baron Vordenburg, the descendant of the hero who rid the area of vampires long ago. Vordenburg, an authority on vampires, has discovered that his ancestor was romantically involved with the Countess Karnstein before she died. Using his forefather's notes, he locates Mircalla's hidden tomb. An imperial commission exhumes the body of Mircalla. Immersed in blood, it seems to be breathing faintly, its heart beating, its eyes open. A stake is driven through its heart, and it gives a corresponding shriek; then, the head is struck off. The body and head are burned to ashes, which are thrown into a river.", "title": "Plot summary" }, { "paragraph_id": 17, "text": "Afterwards, Laura's father takes his daughter on a year-long tour through Italy to regain her health and recover from the trauma, but she never fully does.", "title": "Plot summary" }, { "paragraph_id": 18, "text": "“Carmilla” exhibits the primary characteristics of Gothic fiction. It includes a supernatural figure, a dark setting of an old castle, a mysterious atmosphere, and ominous or superstitious elements.", "title": "Motifs" }, { "paragraph_id": 19, "text": "In the novella, Le Fanu abolishes the Victorian view of women as merely useful possessions of men, relying on them and needing their constant guardianship. The male characters of the story, such as Laura's father and General Spielsdorf, are exposed as being the opposite of the putative Victorian males – helpless and unproductive. The nameless father reaches an agreement with Carmilla's mother, whereas Spielsdorf cannot control the faith of his niece, Bertha. Both of these scenes portray women as equal, if not superior to men. This female empowerment is even more threatening to men if we consider Carmilla's vampiric predecessors and their relationship with their prey. Carmilla is the opposite of those male vampires – she is actually involved with her victims both emotionally and (theoretically) sexually. Moreover, she is able to exceed even more limitations by dominating death. In the end, her immortality is suggested to be sustained by the river where her ashes had been scattered.", "title": "Motifs" }, { "paragraph_id": 20, "text": "Le Fanu also departs from the negative idea of female parasitism and lesbianism by depicting a mutual and irresistible connection between Carmilla and Laura. The latter, along with other female characters, becomes a symbol of all Victorian women – restrained and judged for their emotional reflexes. The ambiguity of Laura's speech and behaviour reveals her struggles with being fully expressive of her concerns and desires.", "title": "Motifs" }, { "paragraph_id": 21, "text": "Another important element of “Carmilla” is the concept of dualism presented through the juxtaposition of vampire and human, as well as lesbian and heterosexual. It is also vivid in Laura's irresolution, since she \"feels both attraction and repulsion\" towards Carmilla. The duality of Carmilla's character is suggested by her human attributes, the lack of predatory demeanour, and her shared experience with Laura. According to Gabriella Jönsson, Carmilla can be seen as a representation of the dark side of all mankind.", "title": "Motifs" }, { "paragraph_id": 22, "text": "As with Dracula, critics have looked for the sources used in the writing of Carmilla. One source used was from a dissertation on magic, vampires, and the apparitions of spirits written by Dom Augustin Calmet entitled Traité sur les apparitions des esprits et sur les vampires ou les revenants de Hongrie, de Moravie, &c. (1751). This is evidenced by a report analysed by Calmet, from a priest who learned information of a town being tormented by a vampiric entity three years earlier. Having travelled to the town to investigate and collecting information of the various inhabitants there, the priest learned that a vampire had tormented many of the inhabitants at night by coming from the nearby cemetery and would haunt many of the residents on their beds. An unknown Hungarian traveller came to the town during this period and helped the town by setting a trap at the cemetery and decapitating the vampire that resided there, curing the town of their torment. This story was retold by Le Fanu and adapted into the thirteenth chapter of Carmilla.", "title": "Sources" }, { "paragraph_id": 23, "text": "According to Matthew Gibson, the Reverend Sabine Baring-Gould's The Book of Were-wolves (1863) and his account of Elizabeth Báthory, Coleridge's Christabel (Part 1, 1797 and Part 2, 1800), and Captain Basil Hall's Schloss Hainfeld; or a Winter in Lower Styria (London and Edinburgh, 1836) are other sources for Le Fanu's Carmilla. Hall's account provides much of the Styrian background and, in particular, a model for both Carmilla and Laura in the figure of Jane Anne Cranstoun, Countess Purgstall.", "title": "Sources" }, { "paragraph_id": 24, "text": "Carmilla, the title character, is the original prototype for a legion of female and lesbian vampires. Although Le Fanu portrays his vampire's sexuality with the circumspection that one would expect for his time, lesbian attraction evidently is the main dynamic between Carmilla and the narrator of the story:", "title": "Influence" }, { "paragraph_id": 25, "text": "Sometimes after an hour of apathy, my strange and beautiful companion would take my hand and hold it with a fond pressure, renewed again and again; blushing softly, gazing in my face with languid and burning eyes, and breathing so fast that her dress rose and fell with the tumultuous respiration. It was like the ardour of a lover; it embarrassed me; it was hateful and yet overpowering; and with gloating eyes she drew me to her, and her hot lips travelled along my cheek in kisses; and she would whisper, almost in sobs, \"You are mine, you shall be mine, and you and I are one for ever.\" (Carmilla, Chapter 4).", "title": "Influence" }, { "paragraph_id": 26, "text": "When compared to other literary vampires of the 19th century, Carmilla is a similar product of a culture with strict sexual mores and tangible religious fear. While Carmilla selected exclusively female victims, she only becomes emotionally involved with a few. Carmilla had nocturnal habits, but was not confined to the darkness. She had unearthly beauty, and was able to change her form and to pass through solid walls. Her animal alter ego was a monstrous black cat, not a large dog as in Dracula. She did, however, sleep in a coffin. Carmilla works as a Gothic horror story because her victims are portrayed as succumbing to a perverse and unholy temptation that has severe metaphysical consequences for them.", "title": "Influence" }, { "paragraph_id": 27, "text": "Some critics, among them William Veeder, suggest that Carmilla, notably in its outlandish use of narrative frames, was an important influence on Henry James' The Turn of the Screw (1898).", "title": "Influence" }, { "paragraph_id": 28, "text": "Le Fanu's work has been noted as an influence on Bram Stoker's masterwork of the genre, Dracula:", "title": "Influence" } ]	Carmilla is an 1872 Gothic novella by Irish author Sheridan Le Fanu and one of the early works of vampire fiction, predating Bram Stoker's Dracula (1897) by 25 years. First published as a serial in The Dark Blue (1871–72), the story is narrated by a young woman preyed upon by a female vampire named Carmilla, later revealed to be Mircalla, Countess Karnstein. The character is a prototypical example of the lesbian vampire, expressing romantic desires toward the protagonist. The story is often anthologised, and has been adapted many times in film and other media.	2001-11-05T09:29:07Z	2023-12-09T09:00:39Z	[ "Template:Dead link", "Template:Commons category", "Template:Wikisource-inline", "Template:About", "Template:Cite news", "Template:Authority control", "Template:Blockquote", "Template:Reflist", "Template:Cite web", "Template:In popular culture", "Template:Use dmy dates", "Template:Infobox book", "Template:Cite journal", "Template:Cite book", "Template:Gutenberg", "Template:Librivox book", "Template:Carmilla", "Template:Short description" ]	https://en.wikipedia.org/wiki/Carmilla
6,922	Clitoridectomy	Clitoridectomy or clitorectomy is the surgical removal, reduction, or partial removal of the clitoris. It is rarely used as a therapeutic medical procedure, such as when cancer has developed in or spread to the clitoris. It is often performed on intersex newborns. Commonly, non-medical removal of the clitoris is performed during female genital mutilation. A clitoridectomy is often done to remove malignancy or necrosis of the clitoris. This is sometimes done along with a radical complete vulvectomy. Surgery may also become necessary due to therapeutic radiation treatments to the pelvic area. Removal of the clitoris may be due to malignancy or trauma. Female infants born with a 46,XX genotype but have genitalia affected by congenital adrenal hyperplasia and are treated surgically with vaginoplasty that often reduces the size of the clitoris without its total removal. The atypical size of the clitoris is due to an endocrine imbalance in utero. Other reasons for the surgery include issues involving a microphallus and those who have Müllerian agenesis. Treatments on children raise human rights concerns. Clitoridectomy surgical techniques are used to remove an invasive malignancy that extends to the clitoris. Standard surgical procedures are followed in these cases. This includes evaluation and biopsy. Other factors that will affect the technique selected are age, other existing medical conditions, and obesity. Other considerations are the probability of extended hospital care and the development of infection at the surgical site. The surgery proceeds with the use of general anesthesia, and prior to the vulvectomy/clitoridectomy an inguinal lymphadenectomy is first done. The extent of the surgical site extends one to two centimeters beyond the boundaries of malignancy. Superficial lymph nodes may also need to be removed. If the malignancy is present in muscular tissue in the region, it is also removed. In some cases, the surgeon is able to preserve the clitoris though the malignancy may be extensive. The cancerous tissue is removed and the incision is closed. Post operative care may employ the use of suction drainage to allow the deeper tissues to heal toward the surface. Follow up after surgery includes the stripping of the drainage device to prevent blockage. A typical hospital stay can be up to two weeks. The site of the surgery is left unbandaged to allow for frequent examination. Complications can be the development of lymphedema though not removing the saphenous vein during the surgery will help prevent this. In some instances, foot elevation, diuretic medication and compression stockings can reduce the build up of fluid. In a clitoridectomy for intersex infants, the clitoris is often reduced instead of removed. The surgeon cuts the shaft of the elongated phallus and sews the glans and preserved nerves back onto the stump. In a less common surgery called clitoral recession, the surgeon hides the clitoral shaft under a fold of skin so only the glans remains visible. While much feminist scholarship has described clitoridectomy as a practice aimed at controlling women's sexuality, the historic emergence of the practice in ancient European and Middle Eastern cultures may also have derived from ideas about intersex people and the policing of boundaries between the sexes. In the seventeenth century, anatomists remained divided on whether a clitoris was a normal female organ, with some arguing that only intersex people had one and that, if large enough to be visible, it should always be removed at birth. In the 19th century, a clitoridectomy was thought by some to curb female masturbation. Isaac Baker Brown (1812–1873), an English gynaecologist who was president of the Medical Society of London believed that the "unnatural irritation" of the clitoris caused epilepsy, hysteria, and mania, and he worked "to remove [it] whenever he had the opportunity of doing so", according to his obituary in the Medical Times and Gazette. Peter Lewis Allen writes that Brown's views caused outrage, and he died penniless after being expelled from the Obstetrical Society. Occasionally, in American and English medicine of the nineteenth century, circumcision was done as a cure for insanity. Some believed that mental and emotional disorders were related to female reproductive organs and that removing the clitoris would cure the neurosis. This treatment was discontinued in 1867. Aesthetics may determine clitoral norms. A lack of ambiguity of the genitalia is seen as necessary in the assignment of a sex to infants and therefore whether a child's genitalia is normal, but what is ambiguous or normal can vary from person to person. Sexual behavior is another reason for clitoridectomies. Author Sarah Rodriguez stated that the history of medical textbooks has indirectly created accepted ideas about the female body. Medical and gynecological textbooks are also at fault in the way that the clitoris is described in comparison to a male's penis. The importance and originality of a female's clitoris is underscored because it is seen as "a less significant organ, since anatomy texts compared the penis and the clitoris in only one direction." Rodriguez said that a male's penis created the framework of the sexual organ. Not all historical examples of clitoral surgeries should be assumed to be clitoridectomy (removal of the clitoris). In the nineteen thirties, the French psychoanalyst Marie Bonaparte studied African clitoral surgical practices and showed that these often involved removal of the clitoral hood, not the clitoris. She also had a surgery done to her own clitoris by the Viennese surgeon Dr Halban, which entailed cutting the suspensory ligament of the clitoris to permit it to sit closer to her vaginal opening. These sorts of clitoral surgeries, contrary to reducing women's sexual pleasure, actually appear aimed at making coitus more pleasurable for women, though it is unclear if that is ever their actual outcome. Clitoridectomies are the most common form of female genital mutilation. The World Health Organization (WHO) estimates that clitoridectomies have been performed on 200 million girls and women that are currently alive. The regions that most clitoridectomies take place are Asia, the Middle East and west, north and east Africa. The practice also exists in migrants originating from these regions. Most of the surgeries are for cultural or religious reasons. Clitoridectomy of women with intersex conditions is controversial when it takes place during childhood or under duress. Intersex women exposed to such treatment have spoken of their loss of physical sensation, and loss of autonomy. In recent years, multiple human rights institutions have criticized early surgical management of such characteristics. In 2013, it was disclosed in a medical journal that four unnamed elite female athletes from developing countries were subjected to gonadectomies and partial clitoridectomies after testosterone testing revealed that they had an intersex condition. In April 2016, the United Nations Special Rapporteur on health, Dainius Pūras, condemned this treatment as a form of female genital mutilation "in the absence of symptoms or health issues warranting those procedures."	[ { "paragraph_id": 0, "text": "Clitoridectomy or clitorectomy is the surgical removal, reduction, or partial removal of the clitoris. It is rarely used as a therapeutic medical procedure, such as when cancer has developed in or spread to the clitoris. It is often performed on intersex newborns. Commonly, non-medical removal of the clitoris is performed during female genital mutilation.", "title": "" }, { "paragraph_id": 1, "text": "A clitoridectomy is often done to remove malignancy or necrosis of the clitoris. This is sometimes done along with a radical complete vulvectomy. Surgery may also become necessary due to therapeutic radiation treatments to the pelvic area.", "title": "Medical uses" }, { "paragraph_id": 2, "text": "Removal of the clitoris may be due to malignancy or trauma.", "title": "Medical uses" }, { "paragraph_id": 3, "text": "Female infants born with a 46,XX genotype but have genitalia affected by congenital adrenal hyperplasia and are treated surgically with vaginoplasty that often reduces the size of the clitoris without its total removal. The atypical size of the clitoris is due to an endocrine imbalance in utero. Other reasons for the surgery include issues involving a microphallus and those who have Müllerian agenesis. Treatments on children raise human rights concerns.", "title": "Medical uses" }, { "paragraph_id": 4, "text": "Clitoridectomy surgical techniques are used to remove an invasive malignancy that extends to the clitoris. Standard surgical procedures are followed in these cases. This includes evaluation and biopsy. Other factors that will affect the technique selected are age, other existing medical conditions, and obesity. Other considerations are the probability of extended hospital care and the development of infection at the surgical site. The surgery proceeds with the use of general anesthesia, and prior to the vulvectomy/clitoridectomy an inguinal lymphadenectomy is first done. The extent of the surgical site extends one to two centimeters beyond the boundaries of malignancy. Superficial lymph nodes may also need to be removed. If the malignancy is present in muscular tissue in the region, it is also removed. In some cases, the surgeon is able to preserve the clitoris though the malignancy may be extensive. The cancerous tissue is removed and the incision is closed.", "title": "Technique" }, { "paragraph_id": 5, "text": "Post operative care may employ the use of suction drainage to allow the deeper tissues to heal toward the surface. Follow up after surgery includes the stripping of the drainage device to prevent blockage. A typical hospital stay can be up to two weeks. The site of the surgery is left unbandaged to allow for frequent examination. Complications can be the development of lymphedema though not removing the saphenous vein during the surgery will help prevent this. In some instances, foot elevation, diuretic medication and compression stockings can reduce the build up of fluid.", "title": "Technique" }, { "paragraph_id": 6, "text": "In a clitoridectomy for intersex infants, the clitoris is often reduced instead of removed. The surgeon cuts the shaft of the elongated phallus and sews the glans and preserved nerves back onto the stump. In a less common surgery called clitoral recession, the surgeon hides the clitoral shaft under a fold of skin so only the glans remains visible.", "title": "Technique" }, { "paragraph_id": 7, "text": "While much feminist scholarship has described clitoridectomy as a practice aimed at controlling women's sexuality, the historic emergence of the practice in ancient European and Middle Eastern cultures may also have derived from ideas about intersex people and the policing of boundaries between the sexes.", "title": "Society and culture" }, { "paragraph_id": 8, "text": "In the seventeenth century, anatomists remained divided on whether a clitoris was a normal female organ, with some arguing that only intersex people had one and that, if large enough to be visible, it should always be removed at birth. In the 19th century, a clitoridectomy was thought by some to curb female masturbation. Isaac Baker Brown (1812–1873), an English gynaecologist who was president of the Medical Society of London believed that the \"unnatural irritation\" of the clitoris caused epilepsy, hysteria, and mania, and he worked \"to remove [it] whenever he had the opportunity of doing so\", according to his obituary in the Medical Times and Gazette. Peter Lewis Allen writes that Brown's views caused outrage, and he died penniless after being expelled from the Obstetrical Society.", "title": "Society and culture" }, { "paragraph_id": 9, "text": "Occasionally, in American and English medicine of the nineteenth century, circumcision was done as a cure for insanity. Some believed that mental and emotional disorders were related to female reproductive organs and that removing the clitoris would cure the neurosis. This treatment was discontinued in 1867.", "title": "Society and culture" }, { "paragraph_id": 10, "text": "Aesthetics may determine clitoral norms. A lack of ambiguity of the genitalia is seen as necessary in the assignment of a sex to infants and therefore whether a child's genitalia is normal, but what is ambiguous or normal can vary from person to person.", "title": "Society and culture" }, { "paragraph_id": 11, "text": "Sexual behavior is another reason for clitoridectomies. Author Sarah Rodriguez stated that the history of medical textbooks has indirectly created accepted ideas about the female body. Medical and gynecological textbooks are also at fault in the way that the clitoris is described in comparison to a male's penis. The importance and originality of a female's clitoris is underscored because it is seen as \"a less significant organ, since anatomy texts compared the penis and the clitoris in only one direction.\" Rodriguez said that a male's penis created the framework of the sexual organ.", "title": "Society and culture" }, { "paragraph_id": 12, "text": "Not all historical examples of clitoral surgeries should be assumed to be clitoridectomy (removal of the clitoris). In the nineteen thirties, the French psychoanalyst Marie Bonaparte studied African clitoral surgical practices and showed that these often involved removal of the clitoral hood, not the clitoris. She also had a surgery done to her own clitoris by the Viennese surgeon Dr Halban, which entailed cutting the suspensory ligament of the clitoris to permit it to sit closer to her vaginal opening. These sorts of clitoral surgeries, contrary to reducing women's sexual pleasure, actually appear aimed at making coitus more pleasurable for women, though it is unclear if that is ever their actual outcome.", "title": "Society and culture" }, { "paragraph_id": 13, "text": "Clitoridectomies are the most common form of female genital mutilation. The World Health Organization (WHO) estimates that clitoridectomies have been performed on 200 million girls and women that are currently alive. The regions that most clitoridectomies take place are Asia, the Middle East and west, north and east Africa. The practice also exists in migrants originating from these regions. Most of the surgeries are for cultural or religious reasons.", "title": "Society and culture" }, { "paragraph_id": 14, "text": "Clitoridectomy of women with intersex conditions is controversial when it takes place during childhood or under duress. Intersex women exposed to such treatment have spoken of their loss of physical sensation, and loss of autonomy. In recent years, multiple human rights institutions have criticized early surgical management of such characteristics.", "title": "Society and culture" }, { "paragraph_id": 15, "text": "In 2013, it was disclosed in a medical journal that four unnamed elite female athletes from developing countries were subjected to gonadectomies and partial clitoridectomies after testosterone testing revealed that they had an intersex condition. In April 2016, the United Nations Special Rapporteur on health, Dainius Pūras, condemned this treatment as a form of female genital mutilation \"in the absence of symptoms or health issues warranting those procedures.\"", "title": "Society and culture" } ]	Clitoridectomy or clitorectomy is the surgical removal, reduction, or partial removal of the clitoris. It is rarely used as a therapeutic medical procedure, such as when cancer has developed in or spread to the clitoris. It is often performed on intersex newborns. Commonly, non-medical removal of the clitoris is performed during female genital mutilation.	2001-10-27T00:23:30Z	2023-12-23T17:19:28Z	[ "Template:Authority control", "Template:Citation", "Template:Medicine", "Template:Wound healing", "Template:Chromo", "Template:Cite news", "Template:Short description", "Template:Further", "Template:Cite journal", "Template:Cite web", "Template:Reproductive health", "Template:Reflist", "Template:Cite book", "Template:Cite report", "Template:Urogenital surgical and other procedures", "Template:Infobox medical intervention", "Template:Portal", "Template:Cite press release", "Template:Female genital mutilation" ]	https://en.wikipedia.org/wiki/Clitoridectomy
6,924	Cabal	A cabal is a group of people who are united in some close design, usually to promote their private views or interests in an ideology, a state, or another community, often by intrigue and usually without the knowledge of those who are outside their group. The use of this term usually carries negative connotations of political purpose, conspiracy and secrecy. It can also refer to a secret plot or a clique, or it may be used as a verb (to form a cabal or secretly conspire). The term cabal is derived from Kabbalah (a word that has numerous spelling variations), the Jewish mystical interpretation of the Hebrew scripture (קַבָּלָה). In Hebrew, it means "received doctrine" or "tradition", In European culture (Christian Cabala, Hermetic Qabalah) it became associated with occult doctrine or a secret. It came into English via the French cabale from the medieval Latin cabbala, and was known early in the 17th century through usages linked to Charles II and Oliver Cromwell. By the middle of the 17th century, it had developed further to mean some intrigue entered into by a small group and also referred to the group of people so involved, i.e. a semi-secret political clique. There is a theory that the term took on its present meaning from a group of ministers formed in 1668 - the "Cabal ministry" of King Charles II of England. Members included Sir Thomas Clifford, Lord Arlington, the Duke of Buckingham, Lord Ashley and Lord Lauderdale, whose initial letters coincidentally spelled CABAL, and who were the signatories of the public Treaty of Dover that allied England to France in a prospective war against the Netherlands, and served as a cover for the Secret Treaty of Dover. The theory that the word originated as an acronym from the names of the group of ministers is a folk etymology, although the coincidence was noted at the time and could possibly have popularized its use. In Dutch, the word kabaal, also kabale or cabale, was used during the 18th century in the same way. The Friesche Kabaal (The Frisian Cabal) denoted the Frisian pro-Orange nobility which supported the stadholderate, but also had great influence on stadtholders Willem IV and Willem V and their regents, and therefore on the matters of state in the Dutch Republic. This influence came to an end when the major Frisian nobles at the court fell out of favor. The word nowadays has the meaning of noise, uproar, racket. It was derived as such from French and mentioned for the first time in 1845. Followers of the QAnon conspiracy theory use "The Cabal" to refer to what is perceived as a secret worldwide elite organization who, according to proponents, wish to undermine democracy and freedom, and implement their own globalist agendas. Some anti-government movements in Australia, particularly those that emerged during Canberra’s response to the pandemic, that Scott Morrison’s secret ministerial appointments were evidence of what they said was happening all along – a "secret cabal". The term is frequently employed as an antisemitic dog whistle, as evidenced both by its Hebrew origin and by its evocation of centuries-old antisemitic tropes.	[ { "paragraph_id": 0, "text": "A cabal is a group of people who are united in some close design, usually to promote their private views or interests in an ideology, a state, or another community, often by intrigue and usually without the knowledge of those who are outside their group. The use of this term usually carries negative connotations of political purpose, conspiracy and secrecy. It can also refer to a secret plot or a clique, or it may be used as a verb (to form a cabal or secretly conspire).", "title": "" }, { "paragraph_id": 1, "text": "The term cabal is derived from Kabbalah (a word that has numerous spelling variations), the Jewish mystical interpretation of the Hebrew scripture (קַבָּלָה). In Hebrew, it means \"received doctrine\" or \"tradition\", In European culture (Christian Cabala, Hermetic Qabalah) it became associated with occult doctrine or a secret.", "title": "Etymology" }, { "paragraph_id": 2, "text": "It came into English via the French cabale from the medieval Latin cabbala, and was known early in the 17th century through usages linked to Charles II and Oliver Cromwell. By the middle of the 17th century, it had developed further to mean some intrigue entered into by a small group and also referred to the group of people so involved, i.e. a semi-secret political clique.", "title": "Etymology" }, { "paragraph_id": 3, "text": "There is a theory that the term took on its present meaning from a group of ministers formed in 1668 - the \"Cabal ministry\" of King Charles II of England. Members included Sir Thomas Clifford, Lord Arlington, the Duke of Buckingham, Lord Ashley and Lord Lauderdale, whose initial letters coincidentally spelled CABAL, and who were the signatories of the public Treaty of Dover that allied England to France in a prospective war against the Netherlands, and served as a cover for the Secret Treaty of Dover. The theory that the word originated as an acronym from the names of the group of ministers is a folk etymology, although the coincidence was noted at the time and could possibly have popularized its use.", "title": "Etymology" }, { "paragraph_id": 4, "text": "In Dutch, the word kabaal, also kabale or cabale, was used during the 18th century in the same way. The Friesche Kabaal (The Frisian Cabal) denoted the Frisian pro-Orange nobility which supported the stadholderate, but also had great influence on stadtholders Willem IV and Willem V and their regents, and therefore on the matters of state in the Dutch Republic. This influence came to an end when the major Frisian nobles at the court fell out of favor. The word nowadays has the meaning of noise, uproar, racket. It was derived as such from French and mentioned for the first time in 1845.", "title": "Usage in the Netherlands" }, { "paragraph_id": 5, "text": "Followers of the QAnon conspiracy theory use \"The Cabal\" to refer to what is perceived as a secret worldwide elite organization who, according to proponents, wish to undermine democracy and freedom, and implement their own globalist agendas.", "title": "Conspiratorial discourse" }, { "paragraph_id": 6, "text": "Some anti-government movements in Australia, particularly those that emerged during Canberra’s response to the pandemic, that Scott Morrison’s secret ministerial appointments were evidence of what they said was happening all along – a \"secret cabal\".", "title": "Conspiratorial discourse" }, { "paragraph_id": 7, "text": "The term is frequently employed as an antisemitic dog whistle, as evidenced both by its Hebrew origin and by its evocation of centuries-old antisemitic tropes.", "title": "Conspiratorial discourse" } ]	A cabal is a group of people who are united in some close design, usually to promote their private views or interests in an ideology, a state, or another community, often by intrigue and usually without the knowledge of those who are outside their group. The use of this term usually carries negative connotations of political purpose, conspiracy and secrecy. It can also refer to a secret plot or a clique, or it may be used as a verb.	2001-10-27T01:59:13Z	2023-11-05T23:59:10Z	[ "Template:Authority control", "Template:Other uses", "Template:Reflist", "Template:Cite magazine", "Template:Wiktionary", "Template:Div col", "Template:Cite EB1911", "Template:Cite journal", "Template:Wiktionary-inline", "Template:Div col end", "Template:Wikiquote-inline", "Template:Conspiracy theories", "Template:Short description", "Template:Cite web", "Template:Cite book", "Template:Commons category" ]	https://en.wikipedia.org/wiki/Cabal
6,925	Cytochrome	Cytochromes are redox-active proteins containing a heme, with a central iron (Fe) atom at its core, as a cofactor. They are involved in electron transport chain and redox catalysis. They are classified according to the type of heme and its mode of binding. Four varieties are recognized by the International Union of Biochemistry and Molecular Biology (IUBMB), cytochromes a, cytochromes b, cytochromes c and cytochrome d. Cytochrome function is linked to the reversible redox change from ferrous (Fe(II)) to the ferric (Fe(III)) oxidation state of the iron found in the heme core. In addition to the classification by the IUBMB into four cytochrome classes, several additional classifications such as cytochrome o and cytochrome P450 can be found in biochemical literature. Cytochromes were initially described in 1884 by Charles Alexander MacMunn as respiratory pigments (myohematin or histohematin). In the 1920s, Keilin rediscovered these respiratory pigments and named them the cytochromes, or “cellular pigments”. He classified these heme proteins on the basis of the position of their lowest energy absorption band in their reduced state, as cytochromes a (605 nm), b (≈565 nm), and c (550 nm). The ultra-violet (UV) to visible spectroscopic signatures of hemes are still used to identify heme type from the reduced bis-pyridine-ligated state, i.e., the pyridine hemochrome method. Within each class, cytochrome a, b, or c, early cytochromes are numbered consecutively, e.g. cyt c, cyt c1, and cyt c2, with more recent examples designated by their reduced state R-band maximum, e.g. cyt c559. The heme group is a highly conjugated ring system (which allows its electrons to be very mobile) surrounding an iron ion. The iron in cytochromes usually exists in a ferrous (Fe) and a ferric (Fe) state with a ferroxo (Fe) state found in catalytic intermediates. Cytochromes are, thus, capable of performing electron transfer reactions and catalysis by reduction or oxidation of their heme iron. The cellular location of cytochromes depends on their function. They can be found as globular proteins and membrane proteins. In the process of oxidative phosphorylation, a globular cytochrome cc protein is involved in the electron transfer from the membrane-bound complex III to complex IV. Complex III itself is composed of several subunits, one of which is a b-type cytochrome while another one is a c-type cytochrome. Both domains are involved in electron transfer within the complex. Complex IV contains a cytochrome a/a3-domain that transfers electrons and catalyzes the reaction of oxygen to water. Photosystem II, the first protein complex in the light-dependent reactions of oxygenic photosynthesis, contains a cytochrome b subunit. Cyclooxygenase 2, an enzyme involved in inflammation, is a cytochrome b protein. In the early 1960s, a linear evolution of cytochromes was suggested by Emanuel Margoliash that led to the molecular clock hypothesis. The apparently constant evolution rate of cytochromes can be a helpful tool in trying to determine when various organisms may have diverged from a common ancestor. Several kinds of cytochrome exist and can be distinguished by spectroscopy, exact structure of the heme group, inhibitor sensitivity, and reduction potential. Four types of cytochromes are distinguished by their prosthetic groups: There is no "cytochrome e," but cytochrome f, found in the cytochrome b6f complex of plants is a c-type cytochrome. In mitochondria and chloroplasts, these cytochromes are often combined in electron transport and related metabolic pathways: A distinct family of cytochromes is the cytochrome P450 family, so named for the characteristic Soret peak formed by absorbance of light at wavelengths near 450 nm when the heme iron is reduced (with sodium dithionite) and complexed to carbon monoxide. These enzymes are primarily involved in steroidogenesis and detoxification.	[ { "paragraph_id": 0, "text": "Cytochromes are redox-active proteins containing a heme, with a central iron (Fe) atom at its core, as a cofactor. They are involved in electron transport chain and redox catalysis. They are classified according to the type of heme and its mode of binding. Four varieties are recognized by the International Union of Biochemistry and Molecular Biology (IUBMB), cytochromes a, cytochromes b, cytochromes c and cytochrome d.", "title": "" }, { "paragraph_id": 1, "text": "Cytochrome function is linked to the reversible redox change from ferrous (Fe(II)) to the ferric (Fe(III)) oxidation state of the iron found in the heme core. In addition to the classification by the IUBMB into four cytochrome classes, several additional classifications such as cytochrome o and cytochrome P450 can be found in biochemical literature.", "title": "" }, { "paragraph_id": 2, "text": "Cytochromes were initially described in 1884 by Charles Alexander MacMunn as respiratory pigments (myohematin or histohematin). In the 1920s, Keilin rediscovered these respiratory pigments and named them the cytochromes, or “cellular pigments”. He classified these heme proteins on the basis of the position of their lowest energy absorption band in their reduced state, as cytochromes a (605 nm), b (≈565 nm), and c (550 nm). The ultra-violet (UV) to visible spectroscopic signatures of hemes are still used to identify heme type from the reduced bis-pyridine-ligated state, i.e., the pyridine hemochrome method. Within each class, cytochrome a, b, or c, early cytochromes are numbered consecutively, e.g. cyt c, cyt c1, and cyt c2, with more recent examples designated by their reduced state R-band maximum, e.g. cyt c559.", "title": "History" }, { "paragraph_id": 3, "text": "The heme group is a highly conjugated ring system (which allows its electrons to be very mobile) surrounding an iron ion. The iron in cytochromes usually exists in a ferrous (Fe) and a ferric (Fe) state with a ferroxo (Fe) state found in catalytic intermediates. Cytochromes are, thus, capable of performing electron transfer reactions and catalysis by reduction or oxidation of their heme iron. The cellular location of cytochromes depends on their function. They can be found as globular proteins and membrane proteins.", "title": "Structure and function" }, { "paragraph_id": 4, "text": "In the process of oxidative phosphorylation, a globular cytochrome cc protein is involved in the electron transfer from the membrane-bound complex III to complex IV. Complex III itself is composed of several subunits, one of which is a b-type cytochrome while another one is a c-type cytochrome. Both domains are involved in electron transfer within the complex. Complex IV contains a cytochrome a/a3-domain that transfers electrons and catalyzes the reaction of oxygen to water. Photosystem II, the first protein complex in the light-dependent reactions of oxygenic photosynthesis, contains a cytochrome b subunit. Cyclooxygenase 2, an enzyme involved in inflammation, is a cytochrome b protein.", "title": "Structure and function" }, { "paragraph_id": 5, "text": "In the early 1960s, a linear evolution of cytochromes was suggested by Emanuel Margoliash that led to the molecular clock hypothesis. The apparently constant evolution rate of cytochromes can be a helpful tool in trying to determine when various organisms may have diverged from a common ancestor.", "title": "Structure and function" }, { "paragraph_id": 6, "text": "Several kinds of cytochrome exist and can be distinguished by spectroscopy, exact structure of the heme group, inhibitor sensitivity, and reduction potential.", "title": "Types" }, { "paragraph_id": 7, "text": "Four types of cytochromes are distinguished by their prosthetic groups:", "title": "Types" }, { "paragraph_id": 8, "text": "There is no \"cytochrome e,\" but cytochrome f, found in the cytochrome b6f complex of plants is a c-type cytochrome.", "title": "Types" }, { "paragraph_id": 9, "text": "In mitochondria and chloroplasts, these cytochromes are often combined in electron transport and related metabolic pathways:", "title": "Types" }, { "paragraph_id": 10, "text": "A distinct family of cytochromes is the cytochrome P450 family, so named for the characteristic Soret peak formed by absorbance of light at wavelengths near 450 nm when the heme iron is reduced (with sodium dithionite) and complexed to carbon monoxide. These enzymes are primarily involved in steroidogenesis and detoxification.", "title": "Types" } ]	Cytochromes are redox-active proteins containing a heme, with a central iron (Fe) atom at its core, as a cofactor. They are involved in electron transport chain and redox catalysis. They are classified according to the type of heme and its mode of binding. Four varieties are recognized by the International Union of Biochemistry and Molecular Biology (IUBMB), cytochromes a, cytochromes b, cytochromes c and cytochrome d. Cytochrome function is linked to the reversible redox change from ferrous (Fe) to the ferric (Fe) oxidation state of the iron found in the heme core. In addition to the classification by the IUBMB into four cytochrome classes, several additional classifications such as cytochrome o and cytochrome P450 can be found in biochemical literature.	2001-10-27T04:04:59Z	2023-11-17T17:58:48Z	[ "Template:Authority control", "Template:Reflist", "Template:Cite book", "Template:Cite web", "Template:Citation", "Template:Short description", "Template:Cite journal", "Template:MeshName", "Template:Hemeproteins" ]	https://en.wikipedia.org/wiki/Cytochrome
6,927	Crowded House	Crowded House are a rock band, formed in Melbourne, Victoria, Australia, in 1985. Its founding members were New Zealander Neil Finn (vocalist, guitarist, primary songwriter) and Australians Paul Hester (drums) and Nick Seymour (bass). Later band members include Neil Finn's brother, Tim Finn and sons Liam and Elroy, as well as Americans Mark Hart and Matt Sherrod, with Neil Finn and Seymour being the sole constant members. Originally active from 1985 to 1996, Crowded House had consistent commercial and critical success in Australia and New Zealand. They achieved success in the United States with their self-titled debut album, which provided the Top Ten hits "Don't Dream It's Over" and "Something So Strong". Further international success came in the UK, Europe, and South Africa in the early 1990s with their third and fourth albums (Woodface and Together Alone) and the compilation album Recurring Dream, which included the hits "Fall at Your Feet", "Weather with You", "Distant Sun", "Locked Out", "Instinct", and "Not the Girl You Think You Are". Neil and Tim Finn were each awarded an OBE in June 1993 for their contributions to the music of New Zealand. Crowded House disbanded in 1996 following several farewell concerts that year, including the "Farewell to the World" concerts in Melbourne and Sydney. Hester died by suicide in 2005. A year later, the group re-formed with drummer Matt Sherrod and released two further albums (Time on Earth and Intriguer), each of which reached number one in Australia. The band went on another hiatus, and reunited in 2020 with a new line-up featuring Neil Finn, Nick Seymour, Mitchell Froom, and Finn's sons Liam and Elroy. Their most recent album, Dreamers Are Waiting, was released in 2021. As of 2021, Crowded House have sold over 15 million albums worldwide. In November 2016, the band was inducted into the ARIA Hall of Fame. Neil Finn (vocals, guitar, piano) and drummer Paul Hester (The Cheks, Deckchairs Overboard) were former members of New Zealand band Split Enz, which spent part of 1975–6 in Australia and several years in England. Neil Finn is the younger brother of Split Enz founding member Tim Finn, who joined Crowded House in 1990 on vocals, guitars, and keyboards for the album Woodface. Bassist Nick Seymour (Plays with Marionettes, Bang, The Horla) is the younger brother of singer-songwriter and guitarist Mark Seymour of Australian rock group Hunters & Collectors. Finn and Hester decided to form a new band during the first Split Enz farewell tour, "Enz with a Bang", in late 1984. Seymour approached Finn during the after party for the Melbourne show and asked if he could audition for the new band. The Mullanes formed in Melbourne in early 1985 with Finn, Hester, Seymour, and guitarist Craig Hooper (The Reels) and first performed on 11 June. They secured a record contract with Capitol Records, but Hooper left the band before the remaining trio moved to Los Angeles to record their debut album. At Capitol's behest, the band's name was changed to Crowded House, which alluded to the lack of space at the small Hollywood Hills house they shared during the recording of the album Crowded House. Former Split Enz keyboardist Eddie Rayner produced the track "Can't Carry On" and was asked to join the band. He toured with them in 1988, but was unable to become a full member due to family commitments. Thanks to their Split Enz connection, the newly formed Crowded House had an established Australasian fanbase. They began by playing at festivals in Australia and New Zealand and released their debut album, Crowded House, in August 1986. Capitol Records initially failed to see the band's potential and gave them only low-key promotion, forcing the band to play at small venues to try to gain attention. The album's first single, "Mean to Me", reached the Australian Kent Music Report Singles Chart top 30 in June. It failed to chart in the US, but moderate American airplay introduced US listeners to the group. The next single, "Don't Dream It's Over", was released in October 1986 and proved an international hit, reaching number two on the US Billboard Hot 100 and number one in Canada. New Zealand radio stations initially gave the song little support until months later when it became internationally successful. Ultimately, the song reached number one on the New Zealand singles chart and number eight in Australia. It remains the group's most commercially successful song. In March 1987, the group were awarded "Best New Talent", along with "Song of the Year" and "Best Video" awards for "Don't Dream It's Over", at the inaugural ARIA Music Awards. The video also earned the group the MTV Video Music Award for Best New Artist that year. The song has often been covered by other artists and gave Paul Young a hit single in 1991. It was also used for a New Zealand Tourism Board advertisement in its "100% Pure New Zealand" worldwide promotion from October 2005. In May 2001, "Don't Dream it's Over" was voted seventh in a poll of the best Australian songs of all time by the Australasian Performing Right Association. In June 1987, nearly a year after its release, Crowded House finally reached number one on the Kent Music Report Album Charts. It also reached number three in New Zealand and number twelve in the US. The follow-up to "Don't Dream it's Over", "Something So Strong", was another global smash, reaching the Top 10 in New Zealand America, and Canada. "World Where You Live" and "Now We're Getting Somewhere" were also released as singles with chart success. As the band's primary songwriter, Neil Finn was under pressure to create a second album to match their debut and the band joked that one potential title for the new release was Mediocre Follow-Up. Eventually titled Temple of Low Men, their second album was released in July 1988 with strong promotion by Capitol Records. The album did not fare as well as their debut in the US, only reaching number 40 and selling around 200,000 copies, but it achieved Australasian success, reaching number one in Australia and number two in New Zealand. The first single "Better Be Home Soon" peaked at number two on both Australian and New Zealand singles charts and reached top 50 in the US, though the following four singles were less successful. Crowded House undertook a short tour of Australia and Canada to promote the album, with Eddie Rayner on keyboards. Multi-instrumentalist Mark Hart, who would eventually become a full band member, replaced Rayner in January 1989. After the tour, Finn fired Seymour from the band. Music journalist Ed Nimmervoll claimed that Seymour's temporary departure was because Finn blamed him for causing his writer's block; however, Finn cited "artistic differences" as the reason. Seymour said that after a month he contacted Finn and they agreed that he would return to the band. Crowded House took a break after the Canadian leg of the Temple of Low Men tour. Neil Finn and his brother Tim recorded songs they had co-written for their own album, Finn. Following the recording sessions with Tim, Neil began writing and recording a third Crowded House album with Hester and Seymour, but these tracks were rejected by the record company, so Neil asked Tim if Crowded House could use the Finn songs. Tim jokingly agreed on the proviso that he become a member, which Neil apparently took literally. With Tim as an official member, the band returned to the studio. The new tracks, as well as some from the previously rejected recordings were combined to make Woodface, which was released in July 1991. The album features eight tracks co-written by Neil and Tim, which feature the brothers harmonising on lead vocals, except on the sombre "All I Ask" on which Tim sang lead. The track was later used on AIDS awareness commercials in Australia. Five of the album's tracks were Neil's solo compositions and two were by Hester, the exuberant "Italian Plastic", which became a crowd favourite at concerts and the hidden track "I'm Still Here". "Chocolate Cake", a humorous comment on American excesses that was not taken well by some US critics and sections of the American public, was released in June 1991 as the first single. Perhaps unsurprisingly it failed to chart in the US; however, it reached number two on Billboard's Modern Rock Tracks chart. The song peaked at number seven in New Zealand and reached the top 20 in Australia. The second single, "Fall at Your Feet", was less successful in Australia and New Zealand but did at least reach the US Hot 100. The album reached number one in New Zealand, number two in Australia, number six in the UK and made the top 20 in several European countries. The third single from Woodface, "Weather With You", peaked at No. 7 in early 1992 giving the band their highest UK chart placement. By contrast, the album had limited success in the US, only reaching number 83 on the Billboard 200 Album Chart and selling 225,000 copies. Despite the success of the album, Tim Finn left Crowded House suddenly part-way through the UK leg of the Woodface tour, a few hours before the band were due to play at King Tut's Club in Glasgow on 1 November 1991. Neil Finn noted that "on stage, it just didn’t feel right for us or him. We’re very off-the-cuff and conversational, whereas Tim is into creating a spectacle and the two approaches don’t get all that well... We’d all open our mouths at the same time and then stop and go, Oh, after you. From Tim’s point of view it was quite a relief to put it all on the table, I think. For half the set he was standing there with his acoustic guitar, not really feeling part of it." Paul Hester commented that "both sides felt good about parting before it could get ugly." Performances on the UK tour, at the Town and Country Club in London, were recorded live and given a limited release in Australia, while individual songs from those shows were released as B-sides of singles in some countries. In June 1993 the New Zealand Government recommended that the Queen award an OBE to Neil and Tim Finn for their contribution to the music of New Zealand. For their fourth album, Together Alone, Crowded House used producer Martin Glover (aka "Youth") and invited touring musician Mark Hart (guitar and keyboards) to become a permanent band member. The album was recorded at Karekare Beach, New Zealand, which gave its name to the opening track, "Kare Kare". The album was released in October 1993 and sold well internationally on the strength of lead single "Distant Sun" and followup "Private Universe". It topped the New Zealand Album Chart, reached number 2 in Australia and number 4 in the UK. "Locked Out" was the album's first US single and received airplay on MTV and VH1. This track and "My Sharona" by The Knack, which were both included on the soundtrack of the film Reality Bites, were bundled together on a jukebox single to promote the film soundtrack. Crowded House were midway through a US tour when Paul Hester quit the band on 15 April 1994. He flew home to Melbourne to await the birth of his first child and indicated that he required more time with his family. Wally Ingram, drummer for support act Sheryl Crow, temporarily filled in until a replacement, Peter Jones (ex-Harem Scarem, Vince Jones, Kate Ceberano's Septet) was found. After the tour, the Finn Brothers released their album Finn in November 1995. In June 1996, at a press conference to announce the release of their greatest hits album Recurring Dream, Neil revealed that Crowded House were to disband. The June 1996 concerts in Europe and Canada were to be their final performances. Recurring Dream contained four songs from each of the band's studio albums, along with three new songs. The album debuted at number one in Australia, New Zealand and the UK in July 1996. Early copies included a bonus CD of live material. The album's three new songs, which were released as singles, were "Instinct", "Not the Girl You Think You Are" and "Everything Is Good for You", which featured backing vocals from Pearl Jam's Eddie Vedder. Paul Hester returned to the band to play drums on the three new tracks. Worried that their goodbye had been too low-key and had disregarded their home fans, the band performed the Farewell to the World concert on the steps of the Sydney Opera House on 24 November 1996, which raised funds for the Sydney Children's Hospital. The concert featured the line-up of Neil Finn, Nick Seymour, Mark Hart and Paul Hester. Tim Finn and Peter Jones both made guest appearances. Support bands on the day were Custard, Powderfinger and You Am I. The concert had one of the highest live audiences in Australian history with the crowd being estimated at between 120,000 and 250,000 people. Farewell to the World was released on VHS in December 1996. In 2007, a double CD and a DVD were issued to commemorate the concert's tenth anniversary. The DVD featured newly recorded audio commentary by Finn, Hart and Seymour and other new bonus material. Following the 1996 break-up of Crowded House, the members embarked upon a variety of projects. Neil Finn released two solo studio albums, Try Whistling This (1998) and One Nil (2001), as well as two live albums, Sessions at West 54th (2000) and 7 Worlds Collide (2001). 7 Worlds Collide saw him performing with guest musicians including Eddie Vedder, Johnny Marr, Ed O'Brien and Phil Selway of Radiohead, Tim Finn, Sebastian Steinberg, Lisa Germano and Betchadupa (featuring his son Liam Finn). A double CD and DVD of the shows were released in November 2001. Tim Finn had resumed his solo career after leaving the group in 1992 and he also worked with Neil on a second Finn Brothers album, Everyone Is Here, which was released in 2004. Paul Hester joined The Finn Brothers on stage for three songs at their Palais Theatre show in Melbourne at the end of 2004. Nick Seymour also joined them on stage in Dublin, where he was living, in 2004. Peter Jones and Nick Seymour joined Australian group Deadstar for their second album, Milk, in 1997. Seymour later worked as a record producer in Dublin, producing Irish group Bell X1's debut album, Neither Am I in 2000. Mark Hart rejoined Supertramp in the late 1990s and later toured with Ringo Starr & His All-Starr Band. In 2001 he released a solo album, Nada Sonata. Paul Hester worked with children's entertainers The Wiggles, playing "Paul the Cook". He also had his own ABC show Hessie's Shed in Australia from late 1997. He formed the band Largest Living Things, which was the name rejected by Capitol Records in favour of Crowded House. It was on Hessie's Shed that Finn, Hester and Seymour last shared a stage, on an episode filmed as part of Finn's promotion for his solo album Try Whistling This in 1998. Finn and Hester performed "Not the Girl You Think You Are" with Largest Living Things, before being joined by Seymour for "Sister Madly" and a version of Paul Kelly's "Leaps and Bounds", which also featured Kelly on vocals. In late 2003, Hester hosted the series Music Max's Sessions. Hester and Seymour were reunited when they both joined singer-songwriter Matt O'Donnell's Melbourne-based group Tarmac Adam. The band released one album, 2003's Handheld Torch, which was produced by Seymour. In May 1999, Crowded House issued a compilation of unreleased songs, Afterglow, which included the track "Recurring Dream", recorded when the group were still called The Mullanes and included Craig Hooper on guitar. The album's liner notes included information about the songs, written by music journalist David Hepworth. Some limited-release versions included a second CD with songwriting commentary by Finn. The liner notes confirmed that Crowded House had no plans to reunite at that time. A 2003 compilation album, Classic Masters, was released only in the US, while 2005 saw the release of the album She Will Have Her Way, a collection of cover versions of Crowded House, Split Enz, Tim Finn and Finn Brothers songs by Australasian female artists. The album reached the top 5 in Australia and New Zealand. On 26 March 2005, Paul Hester was found dead. He had committed suicide by hanging himself from a tree in a park near his home in Melbourne. He was 46 years old. His obituary in The Sydney Morning Herald stated that he had fought "a long battle with depression." Following the news of Hester's death, Nick Seymour joined The Finn Brothers on stage at the Royal Albert Hall in London, where the three played in memory of Hester. A snare drum with a top hat on it stood at the front of the stage as a tribute. Writing in 2010 Neil Finn said, "When we lost Paul it was like someone pulled the rug out from underneath everything, a terrible jolt out of the dark blue. He was the best drummer I had ever played with and for many years, my closest friend." In 2006 Neil Finn asked Nick Seymour to play bass on his third solo album. Seymour agreed and the two joined up with producer and multi-instrumentalist Ethan Johns to begin recording. As the recording sessions progressed it was decided that the album would be issued under the Crowded House band name, rather than as a Neil Finn solo album. In January 2007, the group publicly announced their reformation and on 23 February, after 20 days of auditions, former Beck drummer Matt Sherrod joined Finn, Seymour and Mark Hart to complete the new line up. As Sherrod and Hart had not participated in the initial sessions, four new tracks were recorded with producer Steve Lillywhite including the album's first single "Don't Stop Now". On 17 March 2007 the band played a live show at their rehearsal studio in front of around fifty fans, friends and family. The performance was streamed live as a webcast. The two-and-a-half-hour set included some new tracks, including "Silent House" co-written by Finn with the Dixie Chicks. A concert onboard The Thekla, moored in Bristol, followed on 19 March. Crowded House played at the Marquee Theatre in Tempe, Arizona on 26 April as a warm-up for their appearance at the Coachella Festival on 29 April in Indio, California. They played at the Australian Live Earth concert in Sydney on 7 July. The next day, Finn and Seymour were interviewed on Rove Live and the band, with Hart and Sherrod, performed "Don't Stop Now" to promote the new album, which was titled Time on Earth. The single was a minor hit in Australia and the UK. The album was released worldwide in June and July. It topped the album chart in New Zealand and made number 2 in Australia and number 3 in the UK. On 6 December 2008 Crowded House played the Homebake festival in Sydney, with warm up gigs at small venues in Hobart, Melbourne and Sydney. For these shows the band were augmented by multi-instrumentalist Don McGlashan and Neil's younger son, Elroy Finn, on guitar. On 14 March 2009 the band joined Neil's older son, Liam Finn, on stage for three songs at the Sound Relief concert in Melbourne. Crowded House began recording their follow-up to Time on Earth in April 2009, at Finn's own Roundhead Studios. The album, Intriguer, was produced by Jim Scott who had worked on The Sun Came Out by Neil's 7 Worlds Collide project. In August 2009, Finn travelled to Los Angeles to record some overdubs at Jim Scott's Los Angeles studio before they began mixing tracks. The album was released in June 2010, in time for the band's appearance at the West Coast Blues & Roots Festival near Perth. Finn stated that the album contains some, "Unexpected twists and turns" and some songs that, "Sound like nothing we've done before." Intriguer topped the Australian album chart, reached number 3 in New Zealand and number 12 in the UK. Crowded House undertook an extensive world tour in 2010 in support of Intriguer. This was the first album where the band regularly interacted with fans via the internet on their own re-launched website, Twitter and Facebook. The band sold recordings of the shows on the Intriguer tour on USB flash drives and made individual live tracks available for free download. A new compilation album, The Very Very Best of Crowded House, was released in October 2010 to celebrate the band's 25th anniversary. It includes 19 of the band's greatest hits and is also available in a box set with a 25 track DVD of their music videos. A deluxe digital version, available for download only, has 32 tracks including a rare 1987 live recording of the band's version of the Hunters & Collectors song "Throw Your Arms Around Me". No mention of this album has been made on the band's official website or Twitter page, which suggests that they are not involved with its release. Following the success of the album She Will Have Her Way in 2005, a second album of cover versions of Finn Brothers songs (including Crowded House songs) was released on 12 November 2010. Entitled He Will Have His Way, all tracks are performed by Australasian male artists. In November 2011 an Australian tour featured artists involved with the "She Will Have Her Way" and "He Will Have His Way" projects, including Paul Dempsey, Clare Bowditch, Seeker Lover Keeper (Sarah Blasko, Sally Seltmann and Holly Throsby), Alexander Gow (Oh Mercy) and Lior. The band played what would be their last concert for over five years at the A Day on the Green festival in Auckland on 27 February 2011. Former Crowded House drummer Peter Jones died from brain cancer on 18 May 2012, aged 49. A statement issued by the band described him as, "A warm-hearted, funny and talented man, who was a valuable member of Crowded House." In September 2015, the song "Help is Coming" from the Afterglow album, was released as a download and limited edition 7" single to raise money for the charity Save the Children. The B-side, "Anthem", was a previously-unreleased track, recorded at the same demo session as "Help is Coming" in 1995, with vocals added in 2015. Peter Jones plays drums on both songs. The money will be used to provide shelter, water, sanitation and hygiene for refugees in Syria, Lebanon and Iraq. Neil Finn said of "Help Is Coming"..."It was always a song about refugees, even if at the time I was thinking about the immigrants setting off on ships from Europe to America, looking for a better life for their families. There is such a huge scale and urgency to the current refugee crises that barely a day goes by without some crushing image or news account to confront us. We can't be silent any more." Neil Finn confirmed in a 2016 interview with the Dutch newspaper Volkskrant that Crowded House had been on indefinite hiatus since the end of the Intriguer tour. Later that year, however, he and Seymour announced a series of concerts at the Sydney Opera House to mark the 20th anniversary of the Farewell to the World show (24 November 1996). The band, with the same lineup as its initial reunion and Tim Finn as guest, performed four shows between 24 and 27 November 2016. Around the same time, each of the band's 7 studio albums (including the rarities collection Afterglow) was reissued in deluxe 2-CD format with bonus tracks including demos, live recordings, alternate mixes, b-sides and outtakes. In April 2018, Neil Finn joined Fleetwood Mac, along with Mike Campbell of Tom Petty and the Heartbreakers, as a full-time member in the wake of Lindsey Buckingham's departure from the band. In August 2019, Crowded House announced a reunion show at the 2020 Byron Bay Bluesfest. Shortly afterwards, Mark Hart announced that he would not be involved in the group's reunion. Finn confirmed Hart's departure on his podcast Fangradio, noting that he "love[s] Hart dearly as a friend, as a contributor and a collaborator" and that "all will be revealed... trust that good thought and good heart gets put into all of these decisions." In December 2019, Neil Finn announced that the new Crowded House line-up would consist of himself, Seymour, the band's original producer Mitchell Froom and his sons Liam and Elroy. He added that they were making a new studio album, the first since 2010's Intriguer. Due to the COVID-19 pandemic, the band's planned 2020 concerts have had to be rescheduled to 2021, and later again to 2022. On 15 October 2020, the band released "Whatever You Want", the first single from the band in over a decade. The band also shared an accompanying music video, starring Mac DeMarco. On 17 February 2021, the band shared another single, "To the Island." The track serves as the second single to the band's seventh studio album, Dreamers Are Waiting, which was announced on the same day for release on 4 June 2021. The band supported the single with a national tour of New Zealand in March 2021. On 19 August 2021, the band performed their single “To the Island” on CBS's The Late Show with Stephen Colbert. On 2 December 2021, the band announced that it will be touring Australia in 2022, with 6 shows around the country, including the 2022 Bluesfest lineup. On 24 June 2022, the band played at Glastonbury Festival. As the primary songwriter for the band, Neil Finn has always set the tone for the band's sound. AllMusic said that Finn "has consistently proven his knack for crafting high-quality songs that combine irresistible melodies with meticulous lyrical detail." Neil's brother Tim was an early and important musical influence. Neil first saw Tim play with Split Enz in 1972, and said "that performance and those first songs made a lasting impression on me." His mother was another significant musical influence, encouraging him to listen to a variety of genres, including Irish folk music and Māori music. She would play piano at family parties and encourage Neil and Tim to accompany her. Bassist Nick Seymour, who is also an artist, designed or co-designed all of the band's album covers and interior artwork. He also designed some of the costumes worn by the group, notably those from the cover of the group's debut album Crowded House. Seymour collaborated with Finn and Hester on the set design of some of their early music videos, including "Don't Dream It's Over" and "Better Be Home Soon". Since the band reunited, Seymour has again designed their album covers. The majority of the covers for the band's singles were not designed by Seymour. The artwork for "Pineapple Head" was created by Reg Mombassa of Mental As Anything. For the first four albums Mombassa and Noel Crombie, who had been the main designer of Split Enz's artwork, assisted Seymour in creating sets and costumes. For the Farewell to the World concerts Crombie designed the set, while Mombassa and Seymour designed promotional materials and artwork. Studio albums Crowded House has won several national and international awards. In Australia, the group has won 13 ARIA Awards from 36 nominations, including the inaugural Best New Talent in 1987. The majority of their wins were for their first two albums, Crowded House and Temple of Low Men. They won eight APRA Awards from eleven nominations and were nominated for The New Zealand Silver Scroll for "Don't Stop Now" in 2007. "Don't Dream It's Over" was named the seventh best Australian song of all time in 2001. In 1987, Crowded House won the American MTV Video Music Award for Best New Artist for their song "Don't Dream It's Over", which was also nominated for three other awards. In 1994, the group was named International Group of the Year at the BRIT Awards. In 2009, "Don't Dream It's Over" was ranked number fifty on the Triple J Hottest 100 of All Time, voted by the Australian public. In November 2016 Crowded House was inducted into the ARIA Hall of Fame, 30 years after their formation.	[ { "paragraph_id": 0, "text": "Crowded House are a rock band, formed in Melbourne, Victoria, Australia, in 1985. Its founding members were New Zealander Neil Finn (vocalist, guitarist, primary songwriter) and Australians Paul Hester (drums) and Nick Seymour (bass). Later band members include Neil Finn's brother, Tim Finn and sons Liam and Elroy, as well as Americans Mark Hart and Matt Sherrod, with Neil Finn and Seymour being the sole constant members.", "title": "" }, { "paragraph_id": 1, "text": "Originally active from 1985 to 1996, Crowded House had consistent commercial and critical success in Australia and New Zealand. They achieved success in the United States with their self-titled debut album, which provided the Top Ten hits \"Don't Dream It's Over\" and \"Something So Strong\". Further international success came in the UK, Europe, and South Africa in the early 1990s with their third and fourth albums (Woodface and Together Alone) and the compilation album Recurring Dream, which included the hits \"Fall at Your Feet\", \"Weather with You\", \"Distant Sun\", \"Locked Out\", \"Instinct\", and \"Not the Girl You Think You Are\". Neil and Tim Finn were each awarded an OBE in June 1993 for their contributions to the music of New Zealand.", "title": "" }, { "paragraph_id": 2, "text": "Crowded House disbanded in 1996 following several farewell concerts that year, including the \"Farewell to the World\" concerts in Melbourne and Sydney. Hester died by suicide in 2005. A year later, the group re-formed with drummer Matt Sherrod and released two further albums (Time on Earth and Intriguer), each of which reached number one in Australia. The band went on another hiatus, and reunited in 2020 with a new line-up featuring Neil Finn, Nick Seymour, Mitchell Froom, and Finn's sons Liam and Elroy. Their most recent album, Dreamers Are Waiting, was released in 2021.", "title": "" }, { "paragraph_id": 3, "text": "As of 2021, Crowded House have sold over 15 million albums worldwide. In November 2016, the band was inducted into the ARIA Hall of Fame.", "title": "" }, { "paragraph_id": 4, "text": "Neil Finn (vocals, guitar, piano) and drummer Paul Hester (The Cheks, Deckchairs Overboard) were former members of New Zealand band Split Enz, which spent part of 1975–6 in Australia and several years in England. Neil Finn is the younger brother of Split Enz founding member Tim Finn, who joined Crowded House in 1990 on vocals, guitars, and keyboards for the album Woodface. Bassist Nick Seymour (Plays with Marionettes, Bang, The Horla) is the younger brother of singer-songwriter and guitarist Mark Seymour of Australian rock group Hunters & Collectors.", "title": "History" }, { "paragraph_id": 5, "text": "Finn and Hester decided to form a new band during the first Split Enz farewell tour, \"Enz with a Bang\", in late 1984. Seymour approached Finn during the after party for the Melbourne show and asked if he could audition for the new band. The Mullanes formed in Melbourne in early 1985 with Finn, Hester, Seymour, and guitarist Craig Hooper (The Reels) and first performed on 11 June. They secured a record contract with Capitol Records, but Hooper left the band before the remaining trio moved to Los Angeles to record their debut album.", "title": "History" }, { "paragraph_id": 6, "text": "At Capitol's behest, the band's name was changed to Crowded House, which alluded to the lack of space at the small Hollywood Hills house they shared during the recording of the album Crowded House. Former Split Enz keyboardist Eddie Rayner produced the track \"Can't Carry On\" and was asked to join the band. He toured with them in 1988, but was unable to become a full member due to family commitments.", "title": "History" }, { "paragraph_id": 7, "text": "Thanks to their Split Enz connection, the newly formed Crowded House had an established Australasian fanbase. They began by playing at festivals in Australia and New Zealand and released their debut album, Crowded House, in August 1986. Capitol Records initially failed to see the band's potential and gave them only low-key promotion, forcing the band to play at small venues to try to gain attention. The album's first single, \"Mean to Me\", reached the Australian Kent Music Report Singles Chart top 30 in June. It failed to chart in the US, but moderate American airplay introduced US listeners to the group.", "title": "History" }, { "paragraph_id": 8, "text": "The next single, \"Don't Dream It's Over\", was released in October 1986 and proved an international hit, reaching number two on the US Billboard Hot 100 and number one in Canada. New Zealand radio stations initially gave the song little support until months later when it became internationally successful. Ultimately, the song reached number one on the New Zealand singles chart and number eight in Australia. It remains the group's most commercially successful song.", "title": "History" }, { "paragraph_id": 9, "text": "In March 1987, the group were awarded \"Best New Talent\", along with \"Song of the Year\" and \"Best Video\" awards for \"Don't Dream It's Over\", at the inaugural ARIA Music Awards. The video also earned the group the MTV Video Music Award for Best New Artist that year. The song has often been covered by other artists and gave Paul Young a hit single in 1991. It was also used for a New Zealand Tourism Board advertisement in its \"100% Pure New Zealand\" worldwide promotion from October 2005. In May 2001, \"Don't Dream it's Over\" was voted seventh in a poll of the best Australian songs of all time by the Australasian Performing Right Association.", "title": "History" }, { "paragraph_id": 10, "text": "In June 1987, nearly a year after its release, Crowded House finally reached number one on the Kent Music Report Album Charts. It also reached number three in New Zealand and number twelve in the US. The follow-up to \"Don't Dream it's Over\", \"Something So Strong\", was another global smash, reaching the Top 10 in New Zealand America, and Canada. \"World Where You Live\" and \"Now We're Getting Somewhere\" were also released as singles with chart success.", "title": "History" }, { "paragraph_id": 11, "text": "As the band's primary songwriter, Neil Finn was under pressure to create a second album to match their debut and the band joked that one potential title for the new release was Mediocre Follow-Up. Eventually titled Temple of Low Men, their second album was released in July 1988 with strong promotion by Capitol Records. The album did not fare as well as their debut in the US, only reaching number 40 and selling around 200,000 copies, but it achieved Australasian success, reaching number one in Australia and number two in New Zealand. The first single \"Better Be Home Soon\" peaked at number two on both Australian and New Zealand singles charts and reached top 50 in the US, though the following four singles were less successful.", "title": "History" }, { "paragraph_id": 12, "text": "Crowded House undertook a short tour of Australia and Canada to promote the album, with Eddie Rayner on keyboards. Multi-instrumentalist Mark Hart, who would eventually become a full band member, replaced Rayner in January 1989. After the tour, Finn fired Seymour from the band. Music journalist Ed Nimmervoll claimed that Seymour's temporary departure was because Finn blamed him for causing his writer's block; however, Finn cited \"artistic differences\" as the reason. Seymour said that after a month he contacted Finn and they agreed that he would return to the band.", "title": "History" }, { "paragraph_id": 13, "text": "Crowded House took a break after the Canadian leg of the Temple of Low Men tour. Neil Finn and his brother Tim recorded songs they had co-written for their own album, Finn. Following the recording sessions with Tim, Neil began writing and recording a third Crowded House album with Hester and Seymour, but these tracks were rejected by the record company, so Neil asked Tim if Crowded House could use the Finn songs. Tim jokingly agreed on the proviso that he become a member, which Neil apparently took literally. With Tim as an official member, the band returned to the studio.", "title": "History" }, { "paragraph_id": 14, "text": "The new tracks, as well as some from the previously rejected recordings were combined to make Woodface, which was released in July 1991. The album features eight tracks co-written by Neil and Tim, which feature the brothers harmonising on lead vocals, except on the sombre \"All I Ask\" on which Tim sang lead. The track was later used on AIDS awareness commercials in Australia. Five of the album's tracks were Neil's solo compositions and two were by Hester, the exuberant \"Italian Plastic\", which became a crowd favourite at concerts and the hidden track \"I'm Still Here\".", "title": "History" }, { "paragraph_id": 15, "text": "\"Chocolate Cake\", a humorous comment on American excesses that was not taken well by some US critics and sections of the American public, was released in June 1991 as the first single. Perhaps unsurprisingly it failed to chart in the US; however, it reached number two on Billboard's Modern Rock Tracks chart. The song peaked at number seven in New Zealand and reached the top 20 in Australia. The second single, \"Fall at Your Feet\", was less successful in Australia and New Zealand but did at least reach the US Hot 100. The album reached number one in New Zealand, number two in Australia, number six in the UK and made the top 20 in several European countries. The third single from Woodface, \"Weather With You\", peaked at No. 7 in early 1992 giving the band their highest UK chart placement. By contrast, the album had limited success in the US, only reaching number 83 on the Billboard 200 Album Chart and selling 225,000 copies.", "title": "History" }, { "paragraph_id": 16, "text": "Despite the success of the album, Tim Finn left Crowded House suddenly part-way through the UK leg of the Woodface tour, a few hours before the band were due to play at King Tut's Club in Glasgow on 1 November 1991. Neil Finn noted that \"on stage, it just didn’t feel right for us or him. We’re very off-the-cuff and conversational, whereas Tim is into creating a spectacle and the two approaches don’t get all that well... We’d all open our mouths at the same time and then stop and go, Oh, after you. From Tim’s point of view it was quite a relief to put it all on the table, I think. For half the set he was standing there with his acoustic guitar, not really feeling part of it.\" Paul Hester commented that \"both sides felt good about parting before it could get ugly.\"", "title": "History" }, { "paragraph_id": 17, "text": "Performances on the UK tour, at the Town and Country Club in London, were recorded live and given a limited release in Australia, while individual songs from those shows were released as B-sides of singles in some countries. In June 1993 the New Zealand Government recommended that the Queen award an OBE to Neil and Tim Finn for their contribution to the music of New Zealand.", "title": "History" }, { "paragraph_id": 18, "text": "For their fourth album, Together Alone, Crowded House used producer Martin Glover (aka \"Youth\") and invited touring musician Mark Hart (guitar and keyboards) to become a permanent band member. The album was recorded at Karekare Beach, New Zealand, which gave its name to the opening track, \"Kare Kare\". The album was released in October 1993 and sold well internationally on the strength of lead single \"Distant Sun\" and followup \"Private Universe\". It topped the New Zealand Album Chart, reached number 2 in Australia and number 4 in the UK. \"Locked Out\" was the album's first US single and received airplay on MTV and VH1. This track and \"My Sharona\" by The Knack, which were both included on the soundtrack of the film Reality Bites, were bundled together on a jukebox single to promote the film soundtrack.", "title": "History" }, { "paragraph_id": 19, "text": "Crowded House were midway through a US tour when Paul Hester quit the band on 15 April 1994. He flew home to Melbourne to await the birth of his first child and indicated that he required more time with his family. Wally Ingram, drummer for support act Sheryl Crow, temporarily filled in until a replacement, Peter Jones (ex-Harem Scarem, Vince Jones, Kate Ceberano's Septet) was found. After the tour, the Finn Brothers released their album Finn in November 1995. In June 1996, at a press conference to announce the release of their greatest hits album Recurring Dream, Neil revealed that Crowded House were to disband. The June 1996 concerts in Europe and Canada were to be their final performances.", "title": "History" }, { "paragraph_id": 20, "text": "Recurring Dream contained four songs from each of the band's studio albums, along with three new songs. The album debuted at number one in Australia, New Zealand and the UK in July 1996. Early copies included a bonus CD of live material. The album's three new songs, which were released as singles, were \"Instinct\", \"Not the Girl You Think You Are\" and \"Everything Is Good for You\", which featured backing vocals from Pearl Jam's Eddie Vedder. Paul Hester returned to the band to play drums on the three new tracks.", "title": "History" }, { "paragraph_id": 21, "text": "Worried that their goodbye had been too low-key and had disregarded their home fans, the band performed the Farewell to the World concert on the steps of the Sydney Opera House on 24 November 1996, which raised funds for the Sydney Children's Hospital. The concert featured the line-up of Neil Finn, Nick Seymour, Mark Hart and Paul Hester. Tim Finn and Peter Jones both made guest appearances. Support bands on the day were Custard, Powderfinger and You Am I. The concert had one of the highest live audiences in Australian history with the crowd being estimated at between 120,000 and 250,000 people. Farewell to the World was released on VHS in December 1996. In 2007, a double CD and a DVD were issued to commemorate the concert's tenth anniversary. The DVD featured newly recorded audio commentary by Finn, Hart and Seymour and other new bonus material.", "title": "History" }, { "paragraph_id": 22, "text": "Following the 1996 break-up of Crowded House, the members embarked upon a variety of projects. Neil Finn released two solo studio albums, Try Whistling This (1998) and One Nil (2001), as well as two live albums, Sessions at West 54th (2000) and 7 Worlds Collide (2001). 7 Worlds Collide saw him performing with guest musicians including Eddie Vedder, Johnny Marr, Ed O'Brien and Phil Selway of Radiohead, Tim Finn, Sebastian Steinberg, Lisa Germano and Betchadupa (featuring his son Liam Finn). A double CD and DVD of the shows were released in November 2001.", "title": "History" }, { "paragraph_id": 23, "text": "Tim Finn had resumed his solo career after leaving the group in 1992 and he also worked with Neil on a second Finn Brothers album, Everyone Is Here, which was released in 2004. Paul Hester joined The Finn Brothers on stage for three songs at their Palais Theatre show in Melbourne at the end of 2004. Nick Seymour also joined them on stage in Dublin, where he was living, in 2004. Peter Jones and Nick Seymour joined Australian group Deadstar for their second album, Milk, in 1997. Seymour later worked as a record producer in Dublin, producing Irish group Bell X1's debut album, Neither Am I in 2000. Mark Hart rejoined Supertramp in the late 1990s and later toured with Ringo Starr & His All-Starr Band. In 2001 he released a solo album, Nada Sonata.", "title": "History" }, { "paragraph_id": 24, "text": "Paul Hester worked with children's entertainers The Wiggles, playing \"Paul the Cook\". He also had his own ABC show Hessie's Shed in Australia from late 1997. He formed the band Largest Living Things, which was the name rejected by Capitol Records in favour of Crowded House. It was on Hessie's Shed that Finn, Hester and Seymour last shared a stage, on an episode filmed as part of Finn's promotion for his solo album Try Whistling This in 1998. Finn and Hester performed \"Not the Girl You Think You Are\" with Largest Living Things, before being joined by Seymour for \"Sister Madly\" and a version of Paul Kelly's \"Leaps and Bounds\", which also featured Kelly on vocals. In late 2003, Hester hosted the series Music Max's Sessions. Hester and Seymour were reunited when they both joined singer-songwriter Matt O'Donnell's Melbourne-based group Tarmac Adam. The band released one album, 2003's Handheld Torch, which was produced by Seymour.", "title": "History" }, { "paragraph_id": 25, "text": "In May 1999, Crowded House issued a compilation of unreleased songs, Afterglow, which included the track \"Recurring Dream\", recorded when the group were still called The Mullanes and included Craig Hooper on guitar. The album's liner notes included information about the songs, written by music journalist David Hepworth. Some limited-release versions included a second CD with songwriting commentary by Finn. The liner notes confirmed that Crowded House had no plans to reunite at that time. A 2003 compilation album, Classic Masters, was released only in the US, while 2005 saw the release of the album She Will Have Her Way, a collection of cover versions of Crowded House, Split Enz, Tim Finn and Finn Brothers songs by Australasian female artists. The album reached the top 5 in Australia and New Zealand.", "title": "History" }, { "paragraph_id": 26, "text": "On 26 March 2005, Paul Hester was found dead. He had committed suicide by hanging himself from a tree in a park near his home in Melbourne. He was 46 years old. His obituary in The Sydney Morning Herald stated that he had fought \"a long battle with depression.\" Following the news of Hester's death, Nick Seymour joined The Finn Brothers on stage at the Royal Albert Hall in London, where the three played in memory of Hester. A snare drum with a top hat on it stood at the front of the stage as a tribute. Writing in 2010 Neil Finn said, \"When we lost Paul it was like someone pulled the rug out from underneath everything, a terrible jolt out of the dark blue. He was the best drummer I had ever played with and for many years, my closest friend.\"", "title": "History" }, { "paragraph_id": 27, "text": "In 2006 Neil Finn asked Nick Seymour to play bass on his third solo album. Seymour agreed and the two joined up with producer and multi-instrumentalist Ethan Johns to begin recording. As the recording sessions progressed it was decided that the album would be issued under the Crowded House band name, rather than as a Neil Finn solo album. In January 2007, the group publicly announced their reformation and on 23 February, after 20 days of auditions, former Beck drummer Matt Sherrod joined Finn, Seymour and Mark Hart to complete the new line up. As Sherrod and Hart had not participated in the initial sessions, four new tracks were recorded with producer Steve Lillywhite including the album's first single \"Don't Stop Now\".", "title": "History" }, { "paragraph_id": 28, "text": "On 17 March 2007 the band played a live show at their rehearsal studio in front of around fifty fans, friends and family. The performance was streamed live as a webcast. The two-and-a-half-hour set included some new tracks, including \"Silent House\" co-written by Finn with the Dixie Chicks. A concert onboard The Thekla, moored in Bristol, followed on 19 March. Crowded House played at the Marquee Theatre in Tempe, Arizona on 26 April as a warm-up for their appearance at the Coachella Festival on 29 April in Indio, California. They played at the Australian Live Earth concert in Sydney on 7 July. The next day, Finn and Seymour were interviewed on Rove Live and the band, with Hart and Sherrod, performed \"Don't Stop Now\" to promote the new album, which was titled Time on Earth. The single was a minor hit in Australia and the UK. The album was released worldwide in June and July. It topped the album chart in New Zealand and made number 2 in Australia and number 3 in the UK.", "title": "History" }, { "paragraph_id": 29, "text": "On 6 December 2008 Crowded House played the Homebake festival in Sydney, with warm up gigs at small venues in Hobart, Melbourne and Sydney. For these shows the band were augmented by multi-instrumentalist Don McGlashan and Neil's younger son, Elroy Finn, on guitar. On 14 March 2009 the band joined Neil's older son, Liam Finn, on stage for three songs at the Sound Relief concert in Melbourne.", "title": "History" }, { "paragraph_id": 30, "text": "Crowded House began recording their follow-up to Time on Earth in April 2009, at Finn's own Roundhead Studios. The album, Intriguer, was produced by Jim Scott who had worked on The Sun Came Out by Neil's 7 Worlds Collide project. In August 2009, Finn travelled to Los Angeles to record some overdubs at Jim Scott's Los Angeles studio before they began mixing tracks. The album was released in June 2010, in time for the band's appearance at the West Coast Blues & Roots Festival near Perth. Finn stated that the album contains some, \"Unexpected twists and turns\" and some songs that, \"Sound like nothing we've done before.\" Intriguer topped the Australian album chart, reached number 3 in New Zealand and number 12 in the UK.", "title": "History" }, { "paragraph_id": 31, "text": "Crowded House undertook an extensive world tour in 2010 in support of Intriguer. This was the first album where the band regularly interacted with fans via the internet on their own re-launched website, Twitter and Facebook. The band sold recordings of the shows on the Intriguer tour on USB flash drives and made individual live tracks available for free download.", "title": "History" }, { "paragraph_id": 32, "text": "A new compilation album, The Very Very Best of Crowded House, was released in October 2010 to celebrate the band's 25th anniversary. It includes 19 of the band's greatest hits and is also available in a box set with a 25 track DVD of their music videos. A deluxe digital version, available for download only, has 32 tracks including a rare 1987 live recording of the band's version of the Hunters & Collectors song \"Throw Your Arms Around Me\". No mention of this album has been made on the band's official website or Twitter page, which suggests that they are not involved with its release.", "title": "History" }, { "paragraph_id": 33, "text": "Following the success of the album She Will Have Her Way in 2005, a second album of cover versions of Finn Brothers songs (including Crowded House songs) was released on 12 November 2010. Entitled He Will Have His Way, all tracks are performed by Australasian male artists.", "title": "History" }, { "paragraph_id": 34, "text": "In November 2011 an Australian tour featured artists involved with the \"She Will Have Her Way\" and \"He Will Have His Way\" projects, including Paul Dempsey, Clare Bowditch, Seeker Lover Keeper (Sarah Blasko, Sally Seltmann and Holly Throsby), Alexander Gow (Oh Mercy) and Lior. The band played what would be their last concert for over five years at the A Day on the Green festival in Auckland on 27 February 2011.", "title": "History" }, { "paragraph_id": 35, "text": "Former Crowded House drummer Peter Jones died from brain cancer on 18 May 2012, aged 49. A statement issued by the band described him as, \"A warm-hearted, funny and talented man, who was a valuable member of Crowded House.\"", "title": "History" }, { "paragraph_id": 36, "text": "In September 2015, the song \"Help is Coming\" from the Afterglow album, was released as a download and limited edition 7\" single to raise money for the charity Save the Children. The B-side, \"Anthem\", was a previously-unreleased track, recorded at the same demo session as \"Help is Coming\" in 1995, with vocals added in 2015. Peter Jones plays drums on both songs. The money will be used to provide shelter, water, sanitation and hygiene for refugees in Syria, Lebanon and Iraq. Neil Finn said of \"Help Is Coming\"...\"It was always a song about refugees, even if at the time I was thinking about the immigrants setting off on ships from Europe to America, looking for a better life for their families. There is such a huge scale and urgency to the current refugee crises that barely a day goes by without some crushing image or news account to confront us. We can't be silent any more.\"", "title": "History" }, { "paragraph_id": 37, "text": "Neil Finn confirmed in a 2016 interview with the Dutch newspaper Volkskrant that Crowded House had been on indefinite hiatus since the end of the Intriguer tour. Later that year, however, he and Seymour announced a series of concerts at the Sydney Opera House to mark the 20th anniversary of the Farewell to the World show (24 November 1996). The band, with the same lineup as its initial reunion and Tim Finn as guest, performed four shows between 24 and 27 November 2016. Around the same time, each of the band's 7 studio albums (including the rarities collection Afterglow) was reissued in deluxe 2-CD format with bonus tracks including demos, live recordings, alternate mixes, b-sides and outtakes.", "title": "History" }, { "paragraph_id": 38, "text": "In April 2018, Neil Finn joined Fleetwood Mac, along with Mike Campbell of Tom Petty and the Heartbreakers, as a full-time member in the wake of Lindsey Buckingham's departure from the band.", "title": "History" }, { "paragraph_id": 39, "text": "In August 2019, Crowded House announced a reunion show at the 2020 Byron Bay Bluesfest. Shortly afterwards, Mark Hart announced that he would not be involved in the group's reunion. Finn confirmed Hart's departure on his podcast Fangradio, noting that he \"love[s] Hart dearly as a friend, as a contributor and a collaborator\" and that \"all will be revealed... trust that good thought and good heart gets put into all of these decisions.\" In December 2019, Neil Finn announced that the new Crowded House line-up would consist of himself, Seymour, the band's original producer Mitchell Froom and his sons Liam and Elroy. He added that they were making a new studio album, the first since 2010's Intriguer. Due to the COVID-19 pandemic, the band's planned 2020 concerts have had to be rescheduled to 2021, and later again to 2022.", "title": "History" }, { "paragraph_id": 40, "text": "On 15 October 2020, the band released \"Whatever You Want\", the first single from the band in over a decade. The band also shared an accompanying music video, starring Mac DeMarco.", "title": "History" }, { "paragraph_id": 41, "text": "On 17 February 2021, the band shared another single, \"To the Island.\" The track serves as the second single to the band's seventh studio album, Dreamers Are Waiting, which was announced on the same day for release on 4 June 2021. The band supported the single with a national tour of New Zealand in March 2021.", "title": "History" }, { "paragraph_id": 42, "text": "On 19 August 2021, the band performed their single “To the Island” on CBS's The Late Show with Stephen Colbert. On 2 December 2021, the band announced that it will be touring Australia in 2022, with 6 shows around the country, including the 2022 Bluesfest lineup. On 24 June 2022, the band played at Glastonbury Festival.", "title": "History" }, { "paragraph_id": 43, "text": "As the primary songwriter for the band, Neil Finn has always set the tone for the band's sound. AllMusic said that Finn \"has consistently proven his knack for crafting high-quality songs that combine irresistible melodies with meticulous lyrical detail.\" Neil's brother Tim was an early and important musical influence. Neil first saw Tim play with Split Enz in 1972, and said \"that performance and those first songs made a lasting impression on me.\" His mother was another significant musical influence, encouraging him to listen to a variety of genres, including Irish folk music and Māori music. She would play piano at family parties and encourage Neil and Tim to accompany her.", "title": "Style" }, { "paragraph_id": 44, "text": "Bassist Nick Seymour, who is also an artist, designed or co-designed all of the band's album covers and interior artwork. He also designed some of the costumes worn by the group, notably those from the cover of the group's debut album Crowded House. Seymour collaborated with Finn and Hester on the set design of some of their early music videos, including \"Don't Dream It's Over\" and \"Better Be Home Soon\". Since the band reunited, Seymour has again designed their album covers.", "title": "Style" }, { "paragraph_id": 45, "text": "The majority of the covers for the band's singles were not designed by Seymour. The artwork for \"Pineapple Head\" was created by Reg Mombassa of Mental As Anything. For the first four albums Mombassa and Noel Crombie, who had been the main designer of Split Enz's artwork, assisted Seymour in creating sets and costumes. For the Farewell to the World concerts Crombie designed the set, while Mombassa and Seymour designed promotional materials and artwork.", "title": "Style" }, { "paragraph_id": 46, "text": "Studio albums", "title": "Discography" }, { "paragraph_id": 47, "text": "Crowded House has won several national and international awards. In Australia, the group has won 13 ARIA Awards from 36 nominations, including the inaugural Best New Talent in 1987. The majority of their wins were for their first two albums, Crowded House and Temple of Low Men. They won eight APRA Awards from eleven nominations and were nominated for The New Zealand Silver Scroll for \"Don't Stop Now\" in 2007. \"Don't Dream It's Over\" was named the seventh best Australian song of all time in 2001.", "title": "Awards" }, { "paragraph_id": 48, "text": "In 1987, Crowded House won the American MTV Video Music Award for Best New Artist for their song \"Don't Dream It's Over\", which was also nominated for three other awards. In 1994, the group was named International Group of the Year at the BRIT Awards. In 2009, \"Don't Dream It's Over\" was ranked number fifty on the Triple J Hottest 100 of All Time, voted by the Australian public.", "title": "Awards" }, { "paragraph_id": 49, "text": "In November 2016 Crowded House was inducted into the ARIA Hall of Fame, 30 years after their formation.", "title": "Awards" } ]	Crowded House are a rock band, formed in Melbourne, Victoria, Australia, in 1985. Its founding members were New Zealander Neil Finn and Australians Paul Hester (drums) and Nick Seymour (bass). Later band members include Neil Finn's brother, Tim Finn and sons Liam and Elroy, as well as Americans Mark Hart and Matt Sherrod, with Neil Finn and Seymour being the sole constant members. Originally active from 1985 to 1996, Crowded House had consistent commercial and critical success in Australia and New Zealand. They achieved success in the United States with their self-titled debut album, which provided the Top Ten hits "Don't Dream It's Over" and "Something So Strong". Further international success came in the UK, Europe, and South Africa in the early 1990s with their third and fourth albums and the compilation album Recurring Dream, which included the hits "Fall at Your Feet", "Weather with You", "Distant Sun", "Locked Out", "Instinct", and "Not the Girl You Think You Are". Neil and Tim Finn were each awarded an OBE in June 1993 for their contributions to the music of New Zealand. Crowded House disbanded in 1996 following several farewell concerts that year, including the "Farewell to the World" concerts in Melbourne and Sydney. Hester died by suicide in 2005. A year later, the group re-formed with drummer Matt Sherrod and released two further albums, each of which reached number one in Australia. The band went on another hiatus, and reunited in 2020 with a new line-up featuring Neil Finn, Nick Seymour, Mitchell Froom, and Finn's sons Liam and Elroy. Their most recent album, Dreamers Are Waiting, was released in 2021. As of 2021, Crowded House have sold over 15 million albums worldwide. In November 2016, the band was inducted into the ARIA Hall of Fame.	2001-10-27T08:52:33Z	2023-11-25T17:50:24Z	[ "Template:Use Australian English", "Template:Flatlist", "Template:Refbegin", "Template:Cite AV media notes", "Template:Discogs artist", "Template:ARIA Award for Album of the Year 1980s", "Template:Clear", "Template:ISBN", "Template:Cite encyclopedia", "Template:Refend", "Template:Reflist", "Template:Cite web", "Template:Dead link", "Template:Commons category", "Template:Use dmy dates", "Template:CSS image crop", "Template:Hlist", "Template:Webarchive", "Template:Crowded House", "Template:Short description", "Template:Main", "Template:Brit International Group", "Template:Other uses", "Template:Infobox musical artist", "Template:Portal", "Template:Cite news", "Template:Authority control", "Template:Listen", "Template:Small", "Template:Cite book", "Template:Neil Finn", "Template:MTV Video Music Award for Push Best New Artist" ]	https://en.wikipedia.org/wiki/Crowded_House
6,928	Colette	Sidonie-Gabrielle Colette (French: [sidɔni ɡabʁijɛl kɔlɛt]; 28 January 1873 – 3 August 1954), known as Colette, was a French author and woman of letters. She was also a mime, actress, and journalist. Colette is best known in the English-speaking world for her 1944 novella Gigi, which was the basis for the 1958 film and the 1973 stage production of the same name. Her short story collection The Tendrils of the Vine is also famous in France. Sidonie-Gabrielle Colette was born on 28 January 1873 in the village of Saint-Sauveur-en-Puisaye in the department of Yonne, Burgundy. Her parents were war hero and tax collector Jules-Joseph Colette (1829–1905) and his wife Adèle Eugénie Sidonie ("Sido"), née Landoy (1835–1912). Jules-Joseph Colette was a Zouave of the Saint-Cyr military school. A war hero who had lost a leg in the Second Italian War of Independence, he was awarded a post as tax collector in the village of Saint-Sauveur-en-Puisaye where his children were born. Colette had three older siblings: maternal half-sister, Juliette (1860–1908), maternal half-brother, Achille (1863–1913), and full brother, Léopold (1866–?). Colette attended a public school from the ages of 6 to 17. The family was initially well off, but poor financial management substantially reduced their income. In 1893, Colette married Henry Gauthier-Villars (1859–1931), an author and publisher who used the pen name "Willy." Her first four novels – the four Claudine stories: Claudine à l'école (1900), Claudine à Paris (1901), Claudine en ménage (1902), and Claudine s'en va (1903) – appeared under his name. (The four are published in English as Claudine at School, Claudine in Paris, Claudine Married, and Claudine and Annie.) The novels chart the coming of age and young adulthood of their titular heroine, Claudine, from an unconventional fifteen-year-old in a Burgundian village to a doyenne of the literary salons of turn-of-the-century Paris. The story they tell is semi-autobiographical, although Claudine, unlike Colette, is motherless. The marriage to Gauthier-Villars allowed Colette to devote her time to writing. She later said she would never have become a writer if it had not been for Willy. Fourteen years older than his wife and one of the most notorious libertines in Paris, he introduced his wife into avant-garde intellectual and artistic circles and encouraged her lesbian dalliances. And it was he who chose the titillating subject matter of the Claudine novels: "the secondary myth of Sappho... the girls' school or convent ruled by a seductive female teacher." Willy "locked her [Colette] in her room until she produced enough pages to suit him." Colette and Willy separated in 1906, although their divorce was not final until 1910. Colette had no access to the sizable earnings of the Claudine books – the copyright belonged to Willy – and until 1912 she initiated a stage career in music halls across France, sometimes playing Claudine in sketches from her own novels, earning barely enough to survive and often hungry and ill. To make ends meet, she turned more seriously to journalism in the 1910s. Around this time she also became an avid amateur photographer. This period of her life is recalled in La Vagabonde (1910), which deals with women's independence in a male society, a theme to which she would regularly return in future works. During these years she embarked on a series of relationships with other women, notably with Natalie Clifford Barney and with Mathilde de Morny, the Marquise de Belbeuf ("Max"), with whom she sometimes shared the stage. On 3 January 1907, an onstage kiss between Max and Colette in a pantomime entitled "Rêve d'Égypte" caused a near-riot, and as a result, they were no longer able to live together openly, although their relationship continued for another five years. In 1912, Colette married Henry de Jouvenel, the editor of Le Matin. A daughter, Colette de Jouvenel, nicknamed Bel-Gazou, was born to them in 1913. In 1920, Colette published Chéri, portraying love between an older woman and a much younger man. Chéri is the lover of Léa, a wealthy courtesan; Léa is devastated when Chéri marries a girl his own age and delighted when he returns to her, but after one final night together, she sends him away again. Colette's marriage to Jouvenel ended in divorce in 1924, due partly to his infidelities and partly to her affair with her 16-year-old stepson, Bertrand de Jouvenel. In 1925, she met Maurice Goudeket, who became her final husband; the couple stayed together until her death. Colette was by then an established writer (The Vagabond had received three votes for the prestigious Prix Goncourt). The decades of the 1920s and 1930s were her most productive and innovative period. Set mostly in Burgundy or Paris during the Belle Époque, her work focused on married life and sexuality. It was frequently quasi-autobiographical: Chéri (1920) and Le Blé en Herbe (1923) both deal with love between an aging woman and a very young man, a situation reflecting her relationship with Bertrand de Jouvenel and with her third husband, Goudeket, who was 16 years her junior. La Naissance du Jour (1928) is her explicit criticism of the conventional lives of women, expressed through a meditation on age and the renunciation of love by the character of her mother, Sido. By this time Colette was frequently acclaimed as France's greatest woman writer. "It... has no plot, and yet tells of three lives all that should be known", wrote Janet Flanner of Sido [fr] (1929). "Once again, and at greater length than usual, she has been hailed for her genius, humanities and perfect prose by those literary journals which years ago... lifted nothing at all in her direction except the finger of scorn." During the 1920s she was associated with the Jewish-Algerian writer Elissa Rhaïs, who adopted a Muslim persona to market her novels. Colette was 67 years old when France was occupied by the Germans. She remained in Paris, in her apartment in the Palais-Royal. Her husband Maurice Goudeket, who was Jewish, was arrested by the Gestapo in December 1941, and although he was released after seven weeks through the intervention of the French wife of the German ambassador, Colette lived through the rest of the war years with the anxiety of a possible second arrest. During the Occupation she produced two volumes of memoirs, Journal à Rebours (1941) and De ma Fenêtre (1942); the two were issued in English in 1975 as Looking Backwards. She wrote lifestyle articles for several pro-Nazi newspapers. These, and her novel Julie de Carneilhan (1941), contain many anti-Semitic slurs. In 1944, Colette published what became her most famous work, Gigi, which tells the story of the 16-year-old Gilberte ("Gigi") Alvar. Born into a family of demimondaines, Gigi is trained as a courtesan to captivate a wealthy lover but defies the tradition by marrying him instead. In 1949 it was made into a French film starring Danièle Delorme and Gaby Morlay, then in 1951 adapted for the stage with the then-unknown Audrey Hepburn (picked by Colette personally) in the title role. The 1958 Hollywood musical movie, starring Leslie Caron and Louis Jourdan, with a screenplay by Alan Jay Lerner and a score by Lerner and Frederick Loewe, won the Academy Award for Best Picture. In the postwar years, Colette became a famous public figure. She had become crippled by arthritis and was cared for by Goudeket, who supervised the preparation of her Œuvres Complètes (1948–1950). She continued to write during those years and published L'Etoile Vesper (1946) and Le Fanal Bleu (1949), in which she reflected on the problems of a writer whose inspiration is primarily autobiographical. She was nominated by Claude Farrère for the Nobel Prize in Literature in 1948. Colette's first pieces of journalism (1895-1900) were written in collaboration with her husband, Gauthier-Villars—music reviews for La Cocarde, a daily founded by Maurice Barres and a series of pieces for La Fronde. Following her divorce from Gauthier-Villars in 1910, she wrote independently for a wide variety of publications, gaining considerable renown for her articles covering social trends, theater, fashion, and film, as well as crime reporting. In December 1910, Colette agreed to write a regular column in the Paris daily, Le Matin -- at first under a pseudonym, then as "Colette Willy." One of her editors was Henry de Jouvenel, whom she married in 1912. By 1912, Colette had taught herself to be a reporter: "You have to see and not invent, you have to touch, not imagine .. because, when you see the sheets [at a crime scene] drenched in fresh blood, they are a color you could never invent." In 1914, Colette was named Le Matin's literary editor. Colette's separation from Jouvenel in 1923 forced her to sever ties with Le Matin. Over the next three decades her articles appeared in over two dozen publications, including Vogue, Le Figaro, and Paris-Soir. During the German Occupation of France, Colette continued contributing to daily and weekly publications, a number of them collaborationist and pro-Nazi, including Le Petit Parisien, which became pro-Vichy after January 1941, and La Gerbe, a pro-Nazi weekly. Though her articles were not political in nature, Colette was sharply criticized at the time for lending her prestige to these publications and implicitly accommodating herself to the Vichy regime. Her November 26, 1942 article, "Ma Bourgogne Pauvre" ("My Poor Burgundy") has been singled out by some historians as tacitly accepting some ultra-nationalist goals that hardline Vichyist writers espoused. After 1945, her journalism was sporadic, and her final pieces were more personal essays than reported stories. Over the course of her writing career, Colette published over 1200 articles for newspapers, magazines, and journals. Upon her death, on 3 August 1954, she was refused a religious funeral by the Catholic Church on account of her divorces, but given a state funeral, the first French woman of letters to be granted the honour, and interred in Père-Lachaise cemetery. Colette was elected to the Belgian Royal Academy (1935), the Académie Goncourt (1945, and President in 1949), and a Chevalier (1920) and Grand Officer (1953) of the Légion d'honneur. Colette's numerous biographers have proposed widely differing interpretations of her life and work over the decades. Initially considered a limited if talented novelist (despite the outspoken admiration in her lifetime of figures such as André Gide and Henry de Montherlant), she has been increasingly recognised as an important voice in women's writing. Before Colette's death, Katherine Anne Porter wrote in the New York Times that Colette "is the greatest living French writer of fiction; and that she was while Gide and Proust still lived." Singer-songwriter Rosanne Cash paid tribute to the writer in the song, "The Summer I Read Colette", on her 1996 album 10 Song Demo. Truman Capote wrote an essay in 1970 about meeting her, called "The White Rose". It tells how, when she saw him admiring a paperweight on a table (the "white rose" of the title), she insisted he take it; Capote initially refused the gift, but “…when I protested that I couldn’t accept as a present something she so clearly adored, [she replied] 'My dear, really there is no point in giving a gift unless one also treasures it oneself.'” "Lucette Stranded on the Island" by Julia Holter, from her 2015 album Have You in My Wilderness, is based on a minor character from Colette's short story Chance Acquaintances. In the 1991 film Becoming Colette, Colette is played by the French actress Mathilda May. In the 2018 film Colette, the title character is played by Keira Knightley. Both films focus on Colette's life in her twenties, her marriage to her first husband, and the publication of her first novels under his name. Source:	[ { "paragraph_id": 0, "text": "Sidonie-Gabrielle Colette (French: [sidɔni ɡabʁijɛl kɔlɛt]; 28 January 1873 – 3 August 1954), known as Colette, was a French author and woman of letters. She was also a mime, actress, and journalist. Colette is best known in the English-speaking world for her 1944 novella Gigi, which was the basis for the 1958 film and the 1973 stage production of the same name. Her short story collection The Tendrils of the Vine is also famous in France.", "title": "" }, { "paragraph_id": 1, "text": "Sidonie-Gabrielle Colette was born on 28 January 1873 in the village of Saint-Sauveur-en-Puisaye in the department of Yonne, Burgundy. Her parents were war hero and tax collector Jules-Joseph Colette (1829–1905) and his wife Adèle Eugénie Sidonie (\"Sido\"), née Landoy (1835–1912). Jules-Joseph Colette was a Zouave of the Saint-Cyr military school. A war hero who had lost a leg in the Second Italian War of Independence, he was awarded a post as tax collector in the village of Saint-Sauveur-en-Puisaye where his children were born. Colette had three older siblings: maternal half-sister, Juliette (1860–1908), maternal half-brother, Achille (1863–1913), and full brother, Léopold (1866–?). Colette attended a public school from the ages of 6 to 17. The family was initially well off, but poor financial management substantially reduced their income.", "title": "Life and career" }, { "paragraph_id": 2, "text": "In 1893, Colette married Henry Gauthier-Villars (1859–1931), an author and publisher who used the pen name \"Willy.\" Her first four novels – the four Claudine stories: Claudine à l'école (1900), Claudine à Paris (1901), Claudine en ménage (1902), and Claudine s'en va (1903) – appeared under his name. (The four are published in English as Claudine at School, Claudine in Paris, Claudine Married, and Claudine and Annie.) The novels chart the coming of age and young adulthood of their titular heroine, Claudine, from an unconventional fifteen-year-old in a Burgundian village to a doyenne of the literary salons of turn-of-the-century Paris. The story they tell is semi-autobiographical, although Claudine, unlike Colette, is motherless.", "title": "Life and career" }, { "paragraph_id": 3, "text": "The marriage to Gauthier-Villars allowed Colette to devote her time to writing. She later said she would never have become a writer if it had not been for Willy. Fourteen years older than his wife and one of the most notorious libertines in Paris, he introduced his wife into avant-garde intellectual and artistic circles and encouraged her lesbian dalliances. And it was he who chose the titillating subject matter of the Claudine novels: \"the secondary myth of Sappho... the girls' school or convent ruled by a seductive female teacher.\" Willy \"locked her [Colette] in her room until she produced enough pages to suit him.\"", "title": "Life and career" }, { "paragraph_id": 4, "text": "Colette and Willy separated in 1906, although their divorce was not final until 1910. Colette had no access to the sizable earnings of the Claudine books – the copyright belonged to Willy – and until 1912 she initiated a stage career in music halls across France, sometimes playing Claudine in sketches from her own novels, earning barely enough to survive and often hungry and ill. To make ends meet, she turned more seriously to journalism in the 1910s. Around this time she also became an avid amateur photographer. This period of her life is recalled in La Vagabonde (1910), which deals with women's independence in a male society, a theme to which she would regularly return in future works.", "title": "Life and career" }, { "paragraph_id": 5, "text": "During these years she embarked on a series of relationships with other women, notably with Natalie Clifford Barney and with Mathilde de Morny, the Marquise de Belbeuf (\"Max\"), with whom she sometimes shared the stage. On 3 January 1907, an onstage kiss between Max and Colette in a pantomime entitled \"Rêve d'Égypte\" caused a near-riot, and as a result, they were no longer able to live together openly, although their relationship continued for another five years.", "title": "Life and career" }, { "paragraph_id": 6, "text": "In 1912, Colette married Henry de Jouvenel, the editor of Le Matin. A daughter, Colette de Jouvenel, nicknamed Bel-Gazou, was born to them in 1913.", "title": "Life and career" }, { "paragraph_id": 7, "text": "In 1920, Colette published Chéri, portraying love between an older woman and a much younger man. Chéri is the lover of Léa, a wealthy courtesan; Léa is devastated when Chéri marries a girl his own age and delighted when he returns to her, but after one final night together, she sends him away again.", "title": "Life and career" }, { "paragraph_id": 8, "text": "Colette's marriage to Jouvenel ended in divorce in 1924, due partly to his infidelities and partly to her affair with her 16-year-old stepson, Bertrand de Jouvenel. In 1925, she met Maurice Goudeket, who became her final husband; the couple stayed together until her death.", "title": "Life and career" }, { "paragraph_id": 9, "text": "Colette was by then an established writer (The Vagabond had received three votes for the prestigious Prix Goncourt). The decades of the 1920s and 1930s were her most productive and innovative period. Set mostly in Burgundy or Paris during the Belle Époque, her work focused on married life and sexuality. It was frequently quasi-autobiographical: Chéri (1920) and Le Blé en Herbe (1923) both deal with love between an aging woman and a very young man, a situation reflecting her relationship with Bertrand de Jouvenel and with her third husband, Goudeket, who was 16 years her junior. La Naissance du Jour (1928) is her explicit criticism of the conventional lives of women, expressed through a meditation on age and the renunciation of love by the character of her mother, Sido.", "title": "Life and career" }, { "paragraph_id": 10, "text": "By this time Colette was frequently acclaimed as France's greatest woman writer. \"It... has no plot, and yet tells of three lives all that should be known\", wrote Janet Flanner of Sido [fr] (1929). \"Once again, and at greater length than usual, she has been hailed for her genius, humanities and perfect prose by those literary journals which years ago... lifted nothing at all in her direction except the finger of scorn.\"", "title": "Life and career" }, { "paragraph_id": 11, "text": "During the 1920s she was associated with the Jewish-Algerian writer Elissa Rhaïs, who adopted a Muslim persona to market her novels.", "title": "Life and career" }, { "paragraph_id": 12, "text": "Colette was 67 years old when France was occupied by the Germans. She remained in Paris, in her apartment in the Palais-Royal. Her husband Maurice Goudeket, who was Jewish, was arrested by the Gestapo in December 1941, and although he was released after seven weeks through the intervention of the French wife of the German ambassador, Colette lived through the rest of the war years with the anxiety of a possible second arrest. During the Occupation she produced two volumes of memoirs, Journal à Rebours (1941) and De ma Fenêtre (1942); the two were issued in English in 1975 as Looking Backwards. She wrote lifestyle articles for several pro-Nazi newspapers. These, and her novel Julie de Carneilhan (1941), contain many anti-Semitic slurs.", "title": "Life and career" }, { "paragraph_id": 13, "text": "In 1944, Colette published what became her most famous work, Gigi, which tells the story of the 16-year-old Gilberte (\"Gigi\") Alvar. Born into a family of demimondaines, Gigi is trained as a courtesan to captivate a wealthy lover but defies the tradition by marrying him instead. In 1949 it was made into a French film starring Danièle Delorme and Gaby Morlay, then in 1951 adapted for the stage with the then-unknown Audrey Hepburn (picked by Colette personally) in the title role. The 1958 Hollywood musical movie, starring Leslie Caron and Louis Jourdan, with a screenplay by Alan Jay Lerner and a score by Lerner and Frederick Loewe, won the Academy Award for Best Picture.", "title": "Life and career" }, { "paragraph_id": 14, "text": "In the postwar years, Colette became a famous public figure. She had become crippled by arthritis and was cared for by Goudeket, who supervised the preparation of her Œuvres Complètes (1948–1950). She continued to write during those years and published L'Etoile Vesper (1946) and Le Fanal Bleu (1949), in which she reflected on the problems of a writer whose inspiration is primarily autobiographical. She was nominated by Claude Farrère for the Nobel Prize in Literature in 1948.", "title": "Life and career" }, { "paragraph_id": 15, "text": "Colette's first pieces of journalism (1895-1900) were written in collaboration with her husband, Gauthier-Villars—music reviews for La Cocarde, a daily founded by Maurice Barres and a series of pieces for La Fronde. Following her divorce from Gauthier-Villars in 1910, she wrote independently for a wide variety of publications, gaining considerable renown for her articles covering social trends, theater, fashion, and film, as well as crime reporting. In December 1910, Colette agreed to write a regular column in the Paris daily, Le Matin -- at first under a pseudonym, then as \"Colette Willy.\" One of her editors was Henry de Jouvenel, whom she married in 1912. By 1912, Colette had taught herself to be a reporter: \"You have to see and not invent, you have to touch, not imagine .. because, when you see the sheets [at a crime scene] drenched in fresh blood, they are a color you could never invent.\" In 1914, Colette was named Le Matin's literary editor. Colette's separation from Jouvenel in 1923 forced her to sever ties with Le Matin. Over the next three decades her articles appeared in over two dozen publications, including Vogue, Le Figaro, and Paris-Soir. During the German Occupation of France, Colette continued contributing to daily and weekly publications, a number of them collaborationist and pro-Nazi, including Le Petit Parisien, which became pro-Vichy after January 1941, and La Gerbe, a pro-Nazi weekly. Though her articles were not political in nature, Colette was sharply criticized at the time for lending her prestige to these publications and implicitly accommodating herself to the Vichy regime. Her November 26, 1942 article, \"Ma Bourgogne Pauvre\" (\"My Poor Burgundy\") has been singled out by some historians as tacitly accepting some ultra-nationalist goals that hardline Vichyist writers espoused. After 1945, her journalism was sporadic, and her final pieces were more personal essays than reported stories. Over the course of her writing career, Colette published over 1200 articles for newspapers, magazines, and journals.", "title": "Life and career" }, { "paragraph_id": 16, "text": "Upon her death, on 3 August 1954, she was refused a religious funeral by the Catholic Church on account of her divorces, but given a state funeral, the first French woman of letters to be granted the honour, and interred in Père-Lachaise cemetery.", "title": "Death and legacy" }, { "paragraph_id": 17, "text": "Colette was elected to the Belgian Royal Academy (1935), the Académie Goncourt (1945, and President in 1949), and a Chevalier (1920) and Grand Officer (1953) of the Légion d'honneur.", "title": "Death and legacy" }, { "paragraph_id": 18, "text": "Colette's numerous biographers have proposed widely differing interpretations of her life and work over the decades. Initially considered a limited if talented novelist (despite the outspoken admiration in her lifetime of figures such as André Gide and Henry de Montherlant), she has been increasingly recognised as an important voice in women's writing. Before Colette's death, Katherine Anne Porter wrote in the New York Times that Colette \"is the greatest living French writer of fiction; and that she was while Gide and Proust still lived.\"", "title": "Death and legacy" }, { "paragraph_id": 19, "text": "Singer-songwriter Rosanne Cash paid tribute to the writer in the song, \"The Summer I Read Colette\", on her 1996 album 10 Song Demo.", "title": "Death and legacy" }, { "paragraph_id": 20, "text": "Truman Capote wrote an essay in 1970 about meeting her, called \"The White Rose\". It tells how, when she saw him admiring a paperweight on a table (the \"white rose\" of the title), she insisted he take it; Capote initially refused the gift, but “…when I protested that I couldn’t accept as a present something she so clearly adored, [she replied] 'My dear, really there is no point in giving a gift unless one also treasures it oneself.'”", "title": "Death and legacy" }, { "paragraph_id": 21, "text": "\"Lucette Stranded on the Island\" by Julia Holter, from her 2015 album Have You in My Wilderness, is based on a minor character from Colette's short story Chance Acquaintances.", "title": "Death and legacy" }, { "paragraph_id": 22, "text": "In the 1991 film Becoming Colette, Colette is played by the French actress Mathilda May. In the 2018 film Colette, the title character is played by Keira Knightley. Both films focus on Colette's life in her twenties, her marriage to her first husband, and the publication of her first novels under his name.", "title": "Death and legacy" }, { "paragraph_id": 23, "text": "Source:", "title": "Notable works" } ]	Sidonie-Gabrielle Colette, known as Colette, was a French author and woman of letters. She was also a mime, actress, and journalist. Colette is best known in the English-speaking world for her 1944 novella Gigi, which was the basis for the 1958 film and the 1973 stage production of the same name. Her short story collection The Tendrils of the Vine is also famous in France.	2001-10-27T09:00:44Z	2023-12-16T22:57:10Z	[ "Template:Citation", "Template:In lang", "Template:Gutenberg author", "Template:Other uses", "Template:IPA-fr", "Template:Portal", "Template:Cite news", "Template:Library resources box", "Template:Wikiquote", "Template:Internet Archive author", "Template:Librivox author", "Template:Gigi", "Template:'", "Template:Reflist", "Template:IMDb name", "Template:Short description", "Template:Books and Writers", "Template:Authority control", "Template:Infobox writer", "Template:Sfn", "Template:Cite journal", "Template:Commons category", "Template:Use dmy dates", "Template:Cite book", "Template:Ill", "Template:Interlanguage link multi", "Template:Cite web", "Template:Colette" ]	https://en.wikipedia.org/wiki/Colette
6,932	Charles Alston	Charles Henry Alston (November 28, 1907 – April 27, 1977) was an American painter, sculptor, illustrator, muralist and teacher who lived and worked in the New York City neighborhood of Harlem. Alston was active in the Harlem Renaissance; Alston was the first African-American supervisor for the Works Progress Administration's Federal Art Project. Alston designed and painted murals at the Harlem Hospital and the Golden State Mutual Life Insurance Building. In 1990, Alston's bust of Martin Luther King Jr. became the first image of an African American displayed at the White House. Charles Henry Alston was born on November 28, 1907, in Charlotte, North Carolina, to Reverend Primus Priss Alston and Anna Elizabeth (Miller) Alston, as the youngest of five children. Three survived past infancy: Charles, his older sister Rousmaniere and his older brother Wendell. His father had been born into slavery in 1851 in Pittsboro, North Carolina. After the Civil War, he gained an education and graduated from St. Augustine's College in Raleigh. He became a prominent minister and founder of St. Michael's Episcopal Church, with an African-American congregation. The senior Alston was described as a "race man": an African American who dedicated his skills to the furtherance of the Black race. Reverend Alston met his wife when she was a student at his school. Charles was nicknamed "Spinky" by his father, and kept the nickname as an adult. In 1910, when Charles was three, his father died suddenly of a cerebral hemorrhage. Locals described his father as the "Booker T. Washington of Charlotte". In 1913, Anna Alston married Harry Bearden, Romare Bearden's uncle, making Charles and Romare cousins. The two Bearden families lived across the street from each other; the friendship between Romare and Charles would last a lifetime. As a child, Alston was inspired by his older brother Wendell's drawings of trains and cars, which the young artist copied. Alston also played with clay, creating a sculpture of North Carolina. As an adult he reflected on his memories of sculpting with clay as a child: "I'd get buckets of it and put it through strainers and make things out of it. I think that's the first art experience I remember, making things." His mother was a skilled embroiderer and took up painting at the age of 75. His father was also good at drawing, having wooed Alston's mother Anna with small sketches in the medians of letters he wrote her. In 1915, the Bearden/Alston family moved to New York, as many African-American families did during the Great Migration. Alston's step-father, Henry Bearden, left before his wife and children in order to get work. He secured a job overseeing elevator operations and the newsstand staff at the Bretton Hotel in the Upper West Side. The family lived in Harlem and was considered middle-class. During the Great Depression, the people of Harlem suffered economically. The "stoic strength" seen within the community was later expressed in Charles’ fine art. At Public School 179 in Manhattan, the boy's artistic abilities were recognized and he was asked to draw all of the school posters during his years there. In 1917, Harry and Anna Bearden had a daughter together, Aida C. Bearden, who would later marry operatic baritone Lawrence Whisonant. Alston graduated from DeWitt Clinton High School, where he was nominated for academic excellence and was the art editor of the school's magazine, The Magpie. He was a member of the Arista - National Honor Society and also studied drawing and anatomy at the Saturday school of the National Academy of Art. In high school he was given his first oil paints and learned about his aunt Bessye Bearden's art salons, which stars like Duke Ellington and Langston Hughes attended. After graduating in 1925, he attended Columbia University, turning down a scholarship to the Yale School of Fine Arts. Alston entered the pre-architectural program but lost interest after realizing what difficulties many African-American architects had in the field. After also taking classes in pre-med, he decided that math, physics and chemistry "was not just my bag", and he entered the fine arts program. During his time at Columbia, Alston joined Alpha Phi Alpha, worked on the university's Columbia Daily Spectator, and drew cartoons for the school's magazine Jester. He also explored Harlem restaurants and clubs, where his love for jazz and black music would be fostered. In 1929, he graduated and received the Arthur Wesley Dow fellowship to study at Teachers College, where he obtained his Master's in 1931. For the years 1942 and 1943 Alston was stationed in the army at Fort Huachuca in Arizona. While working on a mural project at Harlem Hospital, he met Myra Adele Logan, then an surgical intern at the hospital. They were married on April 8, 1944. Their home, which included his studio, was on Edgecombe Avenue near Highbridge Park. The couple lived close to family; at their frequent gatherings Alston enjoyed cooking and Myra played piano. During the 1940s Alston also took occasional art classes, studying under Alexander Kostellow. On April 27, 1977, Alston died after a long bout with cancer, just months after his wife died from lung cancer. His memorial service was held at St. Martins Episcopal Church in New York City, on May 21, 1977. While obtaining his master's degree, Alston was the boys’ work director at the Utopia Children's House, started by James Lesesne Wells. He also began teaching at the Harlem Community Art Center, founded by Augusta Savage in the basement of what is now the Schomburg Center for Research in Black Culture. Alston's teaching style was influenced by the work of John Dewey, Arthur Wesley Dow, and Thomas Munro. During this period, Alston began to teach the 10-year-old Jacob Lawrence, whom he strongly influenced. Alston was introduced to African art by the poet Alain Locke. In the late 1920s, Alston joined Bearden and other black artists who refused to exhibit in William E. Harmon Foundation shows, which featured all-black artists in their traveling exhibits. Alston and his friends thought the exhibits were curated for a white audience, a form of segregation which the men protested. They did not want to be set aside but exhibited on the same level as art peers of every skin color. In 1938, the Rosenwald Fund provided money for Alston to travel to the South, which was his first return there since leaving as a child. His travel with Giles Hubert, an inspector for the Farm Security Administration, gave him access to certain situations and he photographed many aspects of rural life. These photographs served as the basis for a series of genre portraits depicting southern black life. In 1940, he completed Tobacco Farmer, the portrait of a young black farmer in white overalls and a blue shirt with a youthful yet serious look upon his face, sitting in front of the landscape and buildings he works on and in. That same year Alston received a second round of funding from the Rosenwald Fund to travel South, and he spent extended time at Atlanta University. During the 1930s and early 1940s, Alston created illustrations for magazines such as Fortune, Mademoiselle, The New Yorker, Melody Maker and others. He also designed album covers for artists such as Duke Ellington and Coleman Hawkins, as well as book covers for Eudora Welty and Langston Hughes. Alston became staff artist at the Office of War Information and Public Relations in 1940, creating drawings of notable African Americans. These images were used in over 200 black newspapers across the country by the government to "foster goodwill with the black citizenry." Alston left commercial work to focus on his own artwork, and 1950 he became the first African-American instructor at the Art Students League, where he remained on faculty until 1971. In 1950, his Painting was exhibited at the Metropolitan Museum of Art, and his artwork was one of the few pieces purchased by the museum. He landed his first solo exhibition in 1953 at the John Heller Gallery, which represented artists such as Roy Lichtenstein. He exhibited there five times from 1953 to 1958. In 1956, Alston became the first African-American instructor at the Museum of Modern Art, where he taught for a year before going to Belgium on behalf of MoMA and the State Department. He coordinated the children's community center at Expo 58. In 1958, he was awarded a grant from and was elected as a member of the American Academy of Arts and Letters. In 1963, Alston co-founded Spiral with his cousin Romare Bearden and Hale Woodruff. Spiral served as a collective of conversation and artistic exploration for a large group of artists who "addressed how black artists should relate to American society in a time of segregation." Artists and arts supporters gathered for Spiral, such as Emma Amos, Perry Ferguson and Merton Simpson. This group served as the 1960s version of the 306 Group. Alston was described as an "intellectual activist", and in 1968 he spoke at Columbia about his activism. In the mid-1960s, Spiral organized an exhibition of black and white artworks, but the exhibition was never officially sponsored by the group, due to internal disagreements. In 1968, Alston received a presidential appointment from Lyndon Johnson to the National Council of Culture and the Arts. Mayor John Lindsay appointed him to the New York City Art Commission in 1969. In 1973, he was made full professor at City College of New York, where he had taught since 1968. In 1975, he was awarded the first Distinguished Alumni Award from Teachers College. The Art Student's League created a 21-year merit scholarship in 1977 under Alston's name to commemorate each year of his tenure. Alston shared studio space with Henry Bannarn at 306 W. 141st Street, which served as an open space for artists, photographers, musicians, writers and the like. Other artists held studio space at 306, such as Jacob Lawrence, Addison Bates and his brother Leon. During this time Alston founded the Harlem Artists Guild with Savage and Elba Lightfoot to work toward equality in WPA art programs in New York. During the early years of 306, Alston focused on mastering portraiture. His early works such as Portrait of a Man (1929) show Alston's detailed and realistic style depicted through pastels and charcoals, inspired by the style of Winold Reiss. In his Girl in a Red Dress (1934) and The Blue Shirt (1935), Alston used modern and innovative techniques for his portraits of young individuals in Harlem. Blue Shirt is thought to be a portrait of Jacob Lawrence. During this time he also created Man Seated with Travel Bag (c. 1938–40), showing the seedy and bleak environment, contrasting with work like the racially charged Vaudeville (c. 1930) and its caricature style of a man in blackface. Inspired by his trip south, Alston began his "family series" in the 1940s. Intensity and angularity come through in the faces of the youth in his portraits Untitled (Portrait of a Girl) and Untitled (Portrait of a Boy). These works also show the influence that African sculpture had on his portraiture, with Portrait of a Boy showing more cubist features. Later family portraits show Alston's exploration of religious symbolism, color, form and space. His family group portraits are often faceless, which Alston states is the way that white America views blacks. Paintings such as Family (1955) show a woman seated and a man standing with two children – the parents seem almost solemn while the children are described as hopeful and with a use of color made famous by Cézanne. In Family Group (c. 1950) Alston's use of gray and ochre tones brings together the parents and son as if one with geometric patterns connecting them together as if a puzzle. The simplicity of the look, style and emotion upon the family is reflective and probably inspired by Alston's trip south. His work during this time has been described as being "characterized by his reductive use of form combined with a sun-hued" palette. During this time he also started to experiment with ink and wash painting, which is seen in work such as Portrait of a Woman (1955), as well as creating portraits to illustrate the music surrounding him in Harlem. Blues Singer #4 shows a female singer on stage with a white flower on her shoulder and a bold red dress. Girl in a Red Dress is thought to be Bessie Smith, whom he drew many times when she was recording and performing. Jazz was an important influence in Alston's work and social life, which he expressed in such works as Jazz (1950) and Harlem at Night. The 1960s civil rights movement influenced his work deeply, and he made artworks expressing feelings related to inequality and race relations in the United States. One of his few religious artworks was Christ Head (1960), which had an angular "Modiglianiesque" portrait of Jesus Christ. Seven years later he created You never really meant it, did you, Mr. Charlie? which, in a similar style as Christ Head, shows a black man standing against a red sky "looking as frustrated as any individual can look", according to Alston. Experimenting with the use of negative space and organic forms in the late 1940s, by the mid-1950s Alston began creating notably modernist style paintings. Woman with Flowers (1949) has been described as a tribute to Modigliani. Ceremonial (1950) shows that he was influenced by African art. Untitled works during this era show his use of color overlay, using muted colors to create simple layered abstracts of still lifes. Symbol (1953) relates to Picasso's Guernica, which was a favorite work of Alston's. His final work of the 1950s, Walking, was inspired by the Montgomery bus boycott. It is taken to represent "the surge of energy among African Americans to organize in their struggle for full equality." Alston is quoted as saying, "The idea of a march was growing....It was in the air...and this painting just came. I called it Walking on purpose. It wasn't the militancy that you saw later. It was a very definite walk-not going back, no hesitation." The civil rights movement of the 1960s was a major influence on Alston. In the late 1950s, he began working in black and white, which he continued up until the mid-1960s, and the period is considered one of his most powerful. Some of the works are simple abstracts of black ink on white paper, similar to a Rorschach test. Untitled (c. 1960s) shows a boxing match, with an attempt to express the drama of the fight through few brushstrokes. Alston worked with oil-on-Masonite during this period as well, using impasto, cream, and ochre to create a moody cave-like artwork. Black and White #1 (1959) is one of Alston's more "monumental" works. Gray, white and black come together to fight for space on an abstract canvas, in a softer form than the more harsh Franz Kline. Alston continued to explore the relationship between monochromatic hues throughout the series which Wardlaw describes as "some of the most profoundly beautiful works of twentieth-century American art." Charles Alston's early mural work was inspired by the work of Aaron Douglas, Diego Rivera and José Clemente Orozco. He met Orozco when they did mural work in New York. In 1943, Alston was elected to the board of directors of the National Society of Mural Painters. He created murals for the Harlem Hospital, Golden State Mutual, American Museum of Natural History, Public School 154, the Bronx Family and Criminal Court, and the Abraham Lincoln High School in Brooklyn, New York. Originally hired as an easel painter, in 1935 Alston became the first African-American supervisor to work for the WPA's Federal Art Project (FAP) in New York. This was his first mural. At this time he was awarded WPA Project Number 1262 – an opportunity to oversee a group of artists creating murals and to supervise their painting for the Harlem Hospital. It was the first government commission ever awarded to African-American artists, who included Beauford Delaney, Seabrook Powell and Vertis Hayes. He also had the chance to create and paint his own contribution to the collection: Magic in Medicine and Modern Medicine. These paintings were part of a diptych completed in 1936 depicting the history of medicine in the African-American community and Beauford Delaney served as assistant. When creating the murals, Alston was inspired by the work of Aaron Douglas, who a year earlier had created the public art piece Aspects of Negro Life for the New York Public Library. He had researched traditional African culture, including traditional African medicine. Magic in Medicine, which depicts African culture and holistic healing, is considered one of "America's first public scenes of Africa". All of the mural sketches submitted were accepted by the FAP; however, hospital superintendent Lawrence T. Dermody and commissioner of hospitals S.S. Goldwater rejected four proposals, due to what they said was an excessive amount of African-American representation in the works. The artists fought their response, writing letters to gain support. Four years later they succeeded in gaining the right to complete the murals. The sketches for Magic in Medicine and Modern Medicine were exhibited in the Museum of Modern Art's "New Horizons in American Art". Alston's murals were hung in the Women's Pavilion of the hospital over uncapped radiators, which caused the paintings to deteriorate from the steam. Plans failed to recap the radiators. In 1959, Alston estimated, in a letter to the Department of Public Works, that the conservation would cost $1,500 but the funds were never acquired. In 1968, after the assassination of Martin Luther King Jr., Alston was asked to create another mural for the hospital, to be placed in a pavilion named after the slain civil rights movement leader. It was to be titled Man Emerging from the Darkness of Poverty and Ignorance into the Light of a Better World. One year after Alston's death in 1977, a group of artists and historians, including the renowned painter and collagist Romare Bearden and art historian Greta Berman, together with administrators from the hospital, and from the New York City Art Commission, examined the murals, and presented a proposal for their restoration to then-mayor Ed Koch. The request was approved, and conservator Alan Farancz set to work in 1979, rescuing the murals from further decay. Many years passed, and the murals began to deteriorate again – especially the Alston works, which continued to suffer effects from the radiators. In 1991, the Municipal Art Society's Adopt-a-Mural program was launched, and the Harlem Hospital murals were chosen for further restoration (Greta Berman. Personal experience). A grant from Alston's sister Rousmaniere Wilson and step-sister Aida Bearden Winters assisted in completing a restoration of the works in 1993. In 2005, Harlem Hospital announced a $2 million project to conserve Alston's murals and three other pieces in the original commissioned project as part of a $225 million hospital expansion. In the late 1940s, Alston became involved in a mural project commissioned by Golden State Mutual Life Insurance Company, which asked the artists to create work related to African-American contributions to the settling of California. Alston worked with Hale Woodruff on the murals in a large studio space in New York; they used ladders to reach the upper parts of the canvas. The artworks, which are considered "priceless contributions to American narrative art", consist of two panels: Exploration and Colonization by Alston and Settlement and Development by Woodruff. Alston's piece covers the period of 1527 to 1850. Images of mountain man James Beckwourth, Biddy Mason, and William Leidesdorff are portrayed in the well-detailed historical mural. Both artists kept in contact with African Americans on the West Coast during creation of the murals, which influenced their content and depictions. The murals were unveiled in 1949, and have been on display in the lobby of the Golden State Mutual Headquarters. Due to economic downturn in the early 21st century, Golden State was forced to sell their entire art collection to ward off its mounting debts. As of spring 2011 the National Museum of African American History and Culture had offered $750,000 to purchase the artworks. This generated controversy, as the artworks have been estimated to be worth at least $5 million. Supporters tried to protect the murals by gaining city landmark protections by the Los Angeles Conservancy. The state of California had declined philanthropic proposals to keep the murals in their original location, and the Smithsonian withdrew their offer. The disposition of the murals are subject to a court case over jurisdiction, which was unresolved in the spring of 2011. Alston also created sculptures. Head of a Woman (1957) shows his shift toward a "reductive and modern approach to sculpture....where facial features were suggested rather than fully formulated in three dimensions,". In 1970, Alston was commissioned by the Community Church of New York to create a bust of Martin Luther King Jr. for $5,000, with only five copies produced. In 1990, Alston's bronze bust of Martin Luther King Jr. (1970), became the first image of an African American to be displayed in the White House. When Barack Obama became the first black president in 2009, he brought the bust of Martin Luther King Jr. into the Oval Office, replacing a bust of Winston Churchill. This marked the first time an image of an African American was displayed in the president's work quarters. Furthermore, the bust became a predominant work seen in official portraits of visiting dignitaries. Now, a second copy of the famous Martin Luther King Jr. bust is displayed in Washington for the public to view up close. During World War II, scholars have theorized that the black press strived to appeal to the black readers, while also appeasing the U.S. government by supporting the war. Alston produced over one hundred government propagandistic illustrations that supported the national position on the war for the U.S. Office of War Information. Simultaneously, the cartoons were targeted to a black audience, designed exclusively for publication in the weekly black newspapers to address specific, controversial issues in the black community. Art critic Emily Genauer stated that Alston "refused to be pigeonholed", regarding his varied exploration in his artwork. Patron Lemoine Deleaver Pierce said of Alston's work: "Never thought of as an innovative artist, Alston generally ignored popular art trends and violated many mainstream art conventions; he produced abstract and figurative paintings often simultaneously, refusing to be stylistically consistent, and during his 40-year career he worked prolifically and unapologetically in both commercial and fine art." Romare Bearden described Alston as "...one of the most versatile artists whose enormous skill led him to a diversity of styles..." Bearden also describes the professionalism and impact that Alston had on Harlem and the African-American community: "'was a consummate artist and a voice in the development of African American art who never doubted the excellence of all people's sensitivity and creative ability. During his long professional career, Alston significantly enriched the cultural life of Harlem. In a profound sense, he was a man who built bridges between Black artists in varying fields, and between other Americans." Writer June Jordan described Alston as "an American artist of first magnitude, and he is a Black American artist of undisturbed integrity." 32. ^"Charles Alston, Artist and Teacher." African American Registry. 30 July 2020. Web. 10 Mar. 2021. <Charles Alston, Artist, and Teacher born	[ { "paragraph_id": 0, "text": "Charles Henry Alston (November 28, 1907 – April 27, 1977) was an American painter, sculptor, illustrator, muralist and teacher who lived and worked in the New York City neighborhood of Harlem. Alston was active in the Harlem Renaissance; Alston was the first African-American supervisor for the Works Progress Administration's Federal Art Project. Alston designed and painted murals at the Harlem Hospital and the Golden State Mutual Life Insurance Building. In 1990, Alston's bust of Martin Luther King Jr. became the first image of an African American displayed at the White House.", "title": "" }, { "paragraph_id": 1, "text": "Charles Henry Alston was born on November 28, 1907, in Charlotte, North Carolina, to Reverend Primus Priss Alston and Anna Elizabeth (Miller) Alston, as the youngest of five children. Three survived past infancy: Charles, his older sister Rousmaniere and his older brother Wendell. His father had been born into slavery in 1851 in Pittsboro, North Carolina. After the Civil War, he gained an education and graduated from St. Augustine's College in Raleigh. He became a prominent minister and founder of St. Michael's Episcopal Church, with an African-American congregation. The senior Alston was described as a \"race man\": an African American who dedicated his skills to the furtherance of the Black race. Reverend Alston met his wife when she was a student at his school. Charles was nicknamed \"Spinky\" by his father, and kept the nickname as an adult. In 1910, when Charles was three, his father died suddenly of a cerebral hemorrhage. Locals described his father as the \"Booker T. Washington of Charlotte\".", "title": "Personal life" }, { "paragraph_id": 2, "text": "In 1913, Anna Alston married Harry Bearden, Romare Bearden's uncle, making Charles and Romare cousins. The two Bearden families lived across the street from each other; the friendship between Romare and Charles would last a lifetime.", "title": "Personal life" }, { "paragraph_id": 3, "text": "As a child, Alston was inspired by his older brother Wendell's drawings of trains and cars, which the young artist copied. Alston also played with clay, creating a sculpture of North Carolina. As an adult he reflected on his memories of sculpting with clay as a child: \"I'd get buckets of it and put it through strainers and make things out of it. I think that's the first art experience I remember, making things.\" His mother was a skilled embroiderer and took up painting at the age of 75. His father was also good at drawing, having wooed Alston's mother Anna with small sketches in the medians of letters he wrote her.", "title": "Personal life" }, { "paragraph_id": 4, "text": "In 1915, the Bearden/Alston family moved to New York, as many African-American families did during the Great Migration. Alston's step-father, Henry Bearden, left before his wife and children in order to get work. He secured a job overseeing elevator operations and the newsstand staff at the Bretton Hotel in the Upper West Side. The family lived in Harlem and was considered middle-class. During the Great Depression, the people of Harlem suffered economically. The \"stoic strength\" seen within the community was later expressed in Charles’ fine art. At Public School 179 in Manhattan, the boy's artistic abilities were recognized and he was asked to draw all of the school posters during his years there.", "title": "Personal life" }, { "paragraph_id": 5, "text": "In 1917, Harry and Anna Bearden had a daughter together, Aida C. Bearden, who would later marry operatic baritone Lawrence Whisonant.", "title": "Personal life" }, { "paragraph_id": 6, "text": "Alston graduated from DeWitt Clinton High School, where he was nominated for academic excellence and was the art editor of the school's magazine, The Magpie. He was a member of the Arista - National Honor Society and also studied drawing and anatomy at the Saturday school of the National Academy of Art. In high school he was given his first oil paints and learned about his aunt Bessye Bearden's art salons, which stars like Duke Ellington and Langston Hughes attended. After graduating in 1925, he attended Columbia University, turning down a scholarship to the Yale School of Fine Arts.", "title": "Personal life" }, { "paragraph_id": 7, "text": "Alston entered the pre-architectural program but lost interest after realizing what difficulties many African-American architects had in the field. After also taking classes in pre-med, he decided that math, physics and chemistry \"was not just my bag\", and he entered the fine arts program. During his time at Columbia, Alston joined Alpha Phi Alpha, worked on the university's Columbia Daily Spectator, and drew cartoons for the school's magazine Jester. He also explored Harlem restaurants and clubs, where his love for jazz and black music would be fostered. In 1929, he graduated and received the Arthur Wesley Dow fellowship to study at Teachers College, where he obtained his Master's in 1931.", "title": "Personal life" }, { "paragraph_id": 8, "text": "For the years 1942 and 1943 Alston was stationed in the army at Fort Huachuca in Arizona. While working on a mural project at Harlem Hospital, he met Myra Adele Logan, then an surgical intern at the hospital. They were married on April 8, 1944. Their home, which included his studio, was on Edgecombe Avenue near Highbridge Park. The couple lived close to family; at their frequent gatherings Alston enjoyed cooking and Myra played piano. During the 1940s Alston also took occasional art classes, studying under Alexander Kostellow.", "title": "Personal life" }, { "paragraph_id": 9, "text": "On April 27, 1977, Alston died after a long bout with cancer, just months after his wife died from lung cancer. His memorial service was held at St. Martins Episcopal Church in New York City, on May 21, 1977.", "title": "Personal life" }, { "paragraph_id": 10, "text": "While obtaining his master's degree, Alston was the boys’ work director at the Utopia Children's House, started by James Lesesne Wells. He also began teaching at the Harlem Community Art Center, founded by Augusta Savage in the basement of what is now the Schomburg Center for Research in Black Culture. Alston's teaching style was influenced by the work of John Dewey, Arthur Wesley Dow, and Thomas Munro. During this period, Alston began to teach the 10-year-old Jacob Lawrence, whom he strongly influenced. Alston was introduced to African art by the poet Alain Locke. In the late 1920s, Alston joined Bearden and other black artists who refused to exhibit in William E. Harmon Foundation shows, which featured all-black artists in their traveling exhibits. Alston and his friends thought the exhibits were curated for a white audience, a form of segregation which the men protested. They did not want to be set aside but exhibited on the same level as art peers of every skin color.", "title": "Professional career" }, { "paragraph_id": 11, "text": "In 1938, the Rosenwald Fund provided money for Alston to travel to the South, which was his first return there since leaving as a child. His travel with Giles Hubert, an inspector for the Farm Security Administration, gave him access to certain situations and he photographed many aspects of rural life. These photographs served as the basis for a series of genre portraits depicting southern black life. In 1940, he completed Tobacco Farmer, the portrait of a young black farmer in white overalls and a blue shirt with a youthful yet serious look upon his face, sitting in front of the landscape and buildings he works on and in. That same year Alston received a second round of funding from the Rosenwald Fund to travel South, and he spent extended time at Atlanta University.", "title": "Professional career" }, { "paragraph_id": 12, "text": "During the 1930s and early 1940s, Alston created illustrations for magazines such as Fortune, Mademoiselle, The New Yorker, Melody Maker and others. He also designed album covers for artists such as Duke Ellington and Coleman Hawkins, as well as book covers for Eudora Welty and Langston Hughes. Alston became staff artist at the Office of War Information and Public Relations in 1940, creating drawings of notable African Americans. These images were used in over 200 black newspapers across the country by the government to \"foster goodwill with the black citizenry.\"", "title": "Professional career" }, { "paragraph_id": 13, "text": "Alston left commercial work to focus on his own artwork, and 1950 he became the first African-American instructor at the Art Students League, where he remained on faculty until 1971. In 1950, his Painting was exhibited at the Metropolitan Museum of Art, and his artwork was one of the few pieces purchased by the museum. He landed his first solo exhibition in 1953 at the John Heller Gallery, which represented artists such as Roy Lichtenstein. He exhibited there five times from 1953 to 1958.", "title": "Professional career" }, { "paragraph_id": 14, "text": "In 1956, Alston became the first African-American instructor at the Museum of Modern Art, where he taught for a year before going to Belgium on behalf of MoMA and the State Department. He coordinated the children's community center at Expo 58. In 1958, he was awarded a grant from and was elected as a member of the American Academy of Arts and Letters.", "title": "Professional career" }, { "paragraph_id": 15, "text": "In 1963, Alston co-founded Spiral with his cousin Romare Bearden and Hale Woodruff. Spiral served as a collective of conversation and artistic exploration for a large group of artists who \"addressed how black artists should relate to American society in a time of segregation.\" Artists and arts supporters gathered for Spiral, such as Emma Amos, Perry Ferguson and Merton Simpson. This group served as the 1960s version of the 306 Group. Alston was described as an \"intellectual activist\", and in 1968 he spoke at Columbia about his activism. In the mid-1960s, Spiral organized an exhibition of black and white artworks, but the exhibition was never officially sponsored by the group, due to internal disagreements.", "title": "Professional career" }, { "paragraph_id": 16, "text": "In 1968, Alston received a presidential appointment from Lyndon Johnson to the National Council of Culture and the Arts. Mayor John Lindsay appointed him to the New York City Art Commission in 1969.", "title": "Professional career" }, { "paragraph_id": 17, "text": "In 1973, he was made full professor at City College of New York, where he had taught since 1968. In 1975, he was awarded the first Distinguished Alumni Award from Teachers College. The Art Student's League created a 21-year merit scholarship in 1977 under Alston's name to commemorate each year of his tenure.", "title": "Professional career" }, { "paragraph_id": 18, "text": "Alston shared studio space with Henry Bannarn at 306 W. 141st Street, which served as an open space for artists, photographers, musicians, writers and the like. Other artists held studio space at 306, such as Jacob Lawrence, Addison Bates and his brother Leon. During this time Alston founded the Harlem Artists Guild with Savage and Elba Lightfoot to work toward equality in WPA art programs in New York. During the early years of 306, Alston focused on mastering portraiture. His early works such as Portrait of a Man (1929) show Alston's detailed and realistic style depicted through pastels and charcoals, inspired by the style of Winold Reiss. In his Girl in a Red Dress (1934) and The Blue Shirt (1935), Alston used modern and innovative techniques for his portraits of young individuals in Harlem. Blue Shirt is thought to be a portrait of Jacob Lawrence. During this time he also created Man Seated with Travel Bag (c. 1938–40), showing the seedy and bleak environment, contrasting with work like the racially charged Vaudeville (c. 1930) and its caricature style of a man in blackface.", "title": "Professional career" }, { "paragraph_id": 19, "text": "Inspired by his trip south, Alston began his \"family series\" in the 1940s. Intensity and angularity come through in the faces of the youth in his portraits Untitled (Portrait of a Girl) and Untitled (Portrait of a Boy). These works also show the influence that African sculpture had on his portraiture, with Portrait of a Boy showing more cubist features. Later family portraits show Alston's exploration of religious symbolism, color, form and space. His family group portraits are often faceless, which Alston states is the way that white America views blacks. Paintings such as Family (1955) show a woman seated and a man standing with two children – the parents seem almost solemn while the children are described as hopeful and with a use of color made famous by Cézanne. In Family Group (c. 1950) Alston's use of gray and ochre tones brings together the parents and son as if one with geometric patterns connecting them together as if a puzzle. The simplicity of the look, style and emotion upon the family is reflective and probably inspired by Alston's trip south. His work during this time has been described as being \"characterized by his reductive use of form combined with a sun-hued\" palette. During this time he also started to experiment with ink and wash painting, which is seen in work such as Portrait of a Woman (1955), as well as creating portraits to illustrate the music surrounding him in Harlem. Blues Singer #4 shows a female singer on stage with a white flower on her shoulder and a bold red dress. Girl in a Red Dress is thought to be Bessie Smith, whom he drew many times when she was recording and performing. Jazz was an important influence in Alston's work and social life, which he expressed in such works as Jazz (1950) and Harlem at Night.", "title": "Professional career" }, { "paragraph_id": 20, "text": "The 1960s civil rights movement influenced his work deeply, and he made artworks expressing feelings related to inequality and race relations in the United States. One of his few religious artworks was Christ Head (1960), which had an angular \"Modiglianiesque\" portrait of Jesus Christ. Seven years later he created You never really meant it, did you, Mr. Charlie? which, in a similar style as Christ Head, shows a black man standing against a red sky \"looking as frustrated as any individual can look\", according to Alston.", "title": "Professional career" }, { "paragraph_id": 21, "text": "Experimenting with the use of negative space and organic forms in the late 1940s, by the mid-1950s Alston began creating notably modernist style paintings. Woman with Flowers (1949) has been described as a tribute to Modigliani. Ceremonial (1950) shows that he was influenced by African art. Untitled works during this era show his use of color overlay, using muted colors to create simple layered abstracts of still lifes. Symbol (1953) relates to Picasso's Guernica, which was a favorite work of Alston's.", "title": "Professional career" }, { "paragraph_id": 22, "text": "His final work of the 1950s, Walking, was inspired by the Montgomery bus boycott. It is taken to represent \"the surge of energy among African Americans to organize in their struggle for full equality.\" Alston is quoted as saying, \"The idea of a march was growing....It was in the air...and this painting just came. I called it Walking on purpose. It wasn't the militancy that you saw later. It was a very definite walk-not going back, no hesitation.\"", "title": "Professional career" }, { "paragraph_id": 23, "text": "The civil rights movement of the 1960s was a major influence on Alston. In the late 1950s, he began working in black and white, which he continued up until the mid-1960s, and the period is considered one of his most powerful. Some of the works are simple abstracts of black ink on white paper, similar to a Rorschach test. Untitled (c. 1960s) shows a boxing match, with an attempt to express the drama of the fight through few brushstrokes. Alston worked with oil-on-Masonite during this period as well, using impasto, cream, and ochre to create a moody cave-like artwork. Black and White #1 (1959) is one of Alston's more \"monumental\" works. Gray, white and black come together to fight for space on an abstract canvas, in a softer form than the more harsh Franz Kline. Alston continued to explore the relationship between monochromatic hues throughout the series which Wardlaw describes as \"some of the most profoundly beautiful works of twentieth-century American art.\"", "title": "Professional career" }, { "paragraph_id": 24, "text": "Charles Alston's early mural work was inspired by the work of Aaron Douglas, Diego Rivera and José Clemente Orozco. He met Orozco when they did mural work in New York. In 1943, Alston was elected to the board of directors of the National Society of Mural Painters. He created murals for the Harlem Hospital, Golden State Mutual, American Museum of Natural History, Public School 154, the Bronx Family and Criminal Court, and the Abraham Lincoln High School in Brooklyn, New York.", "title": "Professional career" }, { "paragraph_id": 25, "text": "Originally hired as an easel painter, in 1935 Alston became the first African-American supervisor to work for the WPA's Federal Art Project (FAP) in New York. This was his first mural. At this time he was awarded WPA Project Number 1262 – an opportunity to oversee a group of artists creating murals and to supervise their painting for the Harlem Hospital. It was the first government commission ever awarded to African-American artists, who included Beauford Delaney, Seabrook Powell and Vertis Hayes. He also had the chance to create and paint his own contribution to the collection: Magic in Medicine and Modern Medicine. These paintings were part of a diptych completed in 1936 depicting the history of medicine in the African-American community and Beauford Delaney served as assistant. When creating the murals, Alston was inspired by the work of Aaron Douglas, who a year earlier had created the public art piece Aspects of Negro Life for the New York Public Library. He had researched traditional African culture, including traditional African medicine. Magic in Medicine, which depicts African culture and holistic healing, is considered one of \"America's first public scenes of Africa\". All of the mural sketches submitted were accepted by the FAP; however, hospital superintendent Lawrence T. Dermody and commissioner of hospitals S.S. Goldwater rejected four proposals, due to what they said was an excessive amount of African-American representation in the works. The artists fought their response, writing letters to gain support. Four years later they succeeded in gaining the right to complete the murals. The sketches for Magic in Medicine and Modern Medicine were exhibited in the Museum of Modern Art's \"New Horizons in American Art\".", "title": "Professional career" }, { "paragraph_id": 26, "text": "Alston's murals were hung in the Women's Pavilion of the hospital over uncapped radiators, which caused the paintings to deteriorate from the steam. Plans failed to recap the radiators. In 1959, Alston estimated, in a letter to the Department of Public Works, that the conservation would cost $1,500 but the funds were never acquired. In 1968, after the assassination of Martin Luther King Jr., Alston was asked to create another mural for the hospital, to be placed in a pavilion named after the slain civil rights movement leader. It was to be titled Man Emerging from the Darkness of Poverty and Ignorance into the Light of a Better World.", "title": "Professional career" }, { "paragraph_id": 27, "text": "One year after Alston's death in 1977, a group of artists and historians, including the renowned painter and collagist Romare Bearden and art historian Greta Berman, together with administrators from the hospital, and from the New York City Art Commission, examined the murals, and presented a proposal for their restoration to then-mayor Ed Koch. The request was approved, and conservator Alan Farancz set to work in 1979, rescuing the murals from further decay. Many years passed, and the murals began to deteriorate again – especially the Alston works, which continued to suffer effects from the radiators. In 1991, the Municipal Art Society's Adopt-a-Mural program was launched, and the Harlem Hospital murals were chosen for further restoration (Greta Berman. Personal experience). A grant from Alston's sister Rousmaniere Wilson and step-sister Aida Bearden Winters assisted in completing a restoration of the works in 1993. In 2005, Harlem Hospital announced a $2 million project to conserve Alston's murals and three other pieces in the original commissioned project as part of a $225 million hospital expansion.", "title": "Professional career" }, { "paragraph_id": 28, "text": "In the late 1940s, Alston became involved in a mural project commissioned by Golden State Mutual Life Insurance Company, which asked the artists to create work related to African-American contributions to the settling of California. Alston worked with Hale Woodruff on the murals in a large studio space in New York; they used ladders to reach the upper parts of the canvas. The artworks, which are considered \"priceless contributions to American narrative art\", consist of two panels: Exploration and Colonization by Alston and Settlement and Development by Woodruff. Alston's piece covers the period of 1527 to 1850. Images of mountain man James Beckwourth, Biddy Mason, and William Leidesdorff are portrayed in the well-detailed historical mural. Both artists kept in contact with African Americans on the West Coast during creation of the murals, which influenced their content and depictions. The murals were unveiled in 1949, and have been on display in the lobby of the Golden State Mutual Headquarters.", "title": "Professional career" }, { "paragraph_id": 29, "text": "Due to economic downturn in the early 21st century, Golden State was forced to sell their entire art collection to ward off its mounting debts. As of spring 2011 the National Museum of African American History and Culture had offered $750,000 to purchase the artworks. This generated controversy, as the artworks have been estimated to be worth at least $5 million. Supporters tried to protect the murals by gaining city landmark protections by the Los Angeles Conservancy. The state of California had declined philanthropic proposals to keep the murals in their original location, and the Smithsonian withdrew their offer. The disposition of the murals are subject to a court case over jurisdiction, which was unresolved in the spring of 2011.", "title": "Professional career" }, { "paragraph_id": 30, "text": "Alston also created sculptures. Head of a Woman (1957) shows his shift toward a \"reductive and modern approach to sculpture....where facial features were suggested rather than fully formulated in three dimensions,\". In 1970, Alston was commissioned by the Community Church of New York to create a bust of Martin Luther King Jr. for $5,000, with only five copies produced. In 1990, Alston's bronze bust of Martin Luther King Jr. (1970), became the first image of an African American to be displayed in the White House. When Barack Obama became the first black president in 2009, he brought the bust of Martin Luther King Jr. into the Oval Office, replacing a bust of Winston Churchill. This marked the first time an image of an African American was displayed in the president's work quarters. Furthermore, the bust became a predominant work seen in official portraits of visiting dignitaries. Now, a second copy of the famous Martin Luther King Jr. bust is displayed in Washington for the public to view up close.", "title": "Professional career" }, { "paragraph_id": 31, "text": "During World War II, scholars have theorized that the black press strived to appeal to the black readers, while also appeasing the U.S. government by supporting the war. Alston produced over one hundred government propagandistic illustrations that supported the national position on the war for the U.S. Office of War Information. Simultaneously, the cartoons were targeted to a black audience, designed exclusively for publication in the weekly black newspapers to address specific, controversial issues in the black community.", "title": "Professional career" }, { "paragraph_id": 32, "text": "Art critic Emily Genauer stated that Alston \"refused to be pigeonholed\", regarding his varied exploration in his artwork. Patron Lemoine Deleaver Pierce said of Alston's work: \"Never thought of as an innovative artist, Alston generally ignored popular art trends and violated many mainstream art conventions; he produced abstract and figurative paintings often simultaneously, refusing to be stylistically consistent, and during his 40-year career he worked prolifically and unapologetically in both commercial and fine art.\" Romare Bearden described Alston as \"...one of the most versatile artists whose enormous skill led him to a diversity of styles...\" Bearden also describes the professionalism and impact that Alston had on Harlem and the African-American community: \"'was a consummate artist and a voice in the development of African American art who never doubted the excellence of all people's sensitivity and creative ability. During his long professional career, Alston significantly enriched the cultural life of Harlem. In a profound sense, he was a man who built bridges between Black artists in varying fields, and between other Americans.\" Writer June Jordan described Alston as \"an American artist of first magnitude, and he is a Black American artist of undisturbed integrity.\"", "title": "Professional career" }, { "paragraph_id": 33, "text": "32. ^\"Charles Alston, Artist and Teacher.\" African American Registry. 30 July 2020. Web. 10 Mar. 2021. <Charles Alston, Artist, and Teacher born", "title": "Notes" } ]	Charles Henry Alston was an American painter, sculptor, illustrator, muralist and teacher who lived and worked in the New York City neighborhood of Harlem. Alston was active in the Harlem Renaissance; Alston was the first African-American supervisor for the Works Progress Administration's Federal Art Project. Alston designed and painted murals at the Harlem Hospital and the Golden State Mutual Life Insurance Building. In 1990, Alston's bust of Martin Luther King Jr. became the first image of an African American displayed at the White House.	2002-02-25T15:51:15Z	2023-12-06T07:42:22Z	[ "Template:Cite journal", "Template:Authority control", "Template:Infobox artist", "Template:Reflist", "Template:Cite book", "Template:Commons category", "Template:Short description", "Template:About", "Template:Cite web", "Template:Cite AV media", "Template:Cite news", "Template:ISBN", "Template:Webarchive", "Template:Use mdy dates", "Template:See also" ]	https://en.wikipedia.org/wiki/Charles_Alston
6,933	Chromatin	Chromatin is a complex of DNA and protein found in eukaryotic cells. The primary function is to package long DNA molecules into more compact, denser structures. This prevents the strands from becoming tangled and also plays important roles in reinforcing the DNA during cell division, preventing DNA damage, and regulating gene expression and DNA replication. During mitosis and meiosis, chromatin facilitates proper segregation of the chromosomes in anaphase; the characteristic shapes of chromosomes visible during this stage are the result of DNA being coiled into highly condensed chromatin. The primary protein components of chromatin are histones. An octamer of two sets of four histone cores (Histone H2A, Histone H2B, Histone H3, and Histone H4) bind to DNA and function as "anchors" around which the strands are wound. In general, there are three levels of chromatin organization: Many organisms, however, do not follow this organization scheme. For example, spermatozoa and avian red blood cells have more tightly packed chromatin than most eukaryotic cells, and trypanosomatid protozoa do not condense their chromatin into visible chromosomes at all. Prokaryotic cells have entirely different structures for organizing their DNA (the prokaryotic chromosome equivalent is called a genophore and is localized within the nucleoid region). The overall structure of the chromatin network further depends on the stage of the cell cycle. During interphase, the chromatin is structurally loose to allow access to RNA and DNA polymerases that transcribe and replicate the DNA. The local structure of chromatin during interphase depends on the specific genes present in the DNA. Regions of DNA containing genes which are actively transcribed ("turned on") are less tightly compacted and closely associated with RNA polymerases in a structure known as euchromatin, while regions containing inactive genes ("turned off") are generally more condensed and associated with structural proteins in heterochromatin. Epigenetic modification of the structural proteins in chromatin via methylation and acetylation also alters local chromatin structure and therefore gene expression. There is limited understanding of chromatin structure and it is active area of research in molecular biology. Chromatin undergoes various structural changes during a cell cycle. Histone proteins are the basic packers and arrangers of chromatin and can be modified by various post-translational modifications to alter chromatin packing (histone modification). Most modifications occur on histone tails. The positively charged histone cores only partially counteract the negative charge of the DNA phosphate backbone resulting in a negative net charge of the overall structure. An imbalance of charge within the polymer causes electrostatic repulsion between neighboring chromatin regions that promote interactions with positively charged proteins, molecules, and cations. As these modifications occur, the electrostatic environment surrounding the chromatin will flux and the level of chromatin compaction will alter. The consequences in terms of chromatin accessibility and compaction depend both on the modified amino acid and the type of modification. For example, histone acetylation results in loosening and increased accessibility of chromatin for replication and transcription. Lysine trimethylation can either lead to increased transcriptional activity (trimethylation of histone H3 lysine 4) or transcriptional repression and chromatin compaction (trimethylation of histone H3, lysine 9 or lysine 27). Several studies suggested that different modifications could occur simultaneously. For example, it was proposed that a bivalent structure (with trimethylation of both lysine 4 and 27 on histone H3) is involved in early mammalian development. Another study tested the role of acetylation of histone 4 on lysine 16 on chromatin structure and found that homogeneous acetylation inhibited 30 nm chromatin formation and blocked adenosine triphosphate remodeling. This singular modification changed the dynamics of the chromatin which shows that acetylation of H4 at K16 is vital for proper intra- and inter- functionality of chromatin structure. Polycomb-group proteins play a role in regulating genes through modulation of chromatin structure. For additional information, see Chromatin variant, Histone modifications in chromatin regulation and RNA polymerase control by chromatin structure. In nature, DNA can form three structures, A-, B-, and Z-DNA. A- and B-DNA are very similar, forming right-handed helices, whereas Z-DNA is a left-handed helix with a zig-zag phosphate backbone. Z-DNA is thought to play a specific role in chromatin structure and transcription because of the properties of the junction between B- and Z-DNA. At the junction of B- and Z-DNA, one pair of bases is flipped out from normal bonding. These play a dual role of a site of recognition by many proteins and as a sink for torsional stress from RNA polymerase or nucleosome binding.DNA bases are stored as a code structure with four chemical bases such as “Adenine (A), Guanine (G), Cytosine (C), and Thymine (T)”. The order and sequences of these chemical structures of DNA are reflected as information available for the creation and control of human organisms. “A with T and C with G” pairing up to build the DNA base pair. Sugar and phosphate molecules are also paired with these bases, making DNA nucleotides arrange 2 long spiral strands unitedly called “double helix”. In eukaryotes, DNA consists of a cell nucleus and the DNA is providing strength and direction to the mechanism of heredity. Moreover, between the nitrogenous bonds of the 2 DNA, homogenous bonds are forming. The basic repeat element of chromatin is the nucleosome, interconnected by sections of linker DNA, a far shorter arrangement than pure DNA in solution. In addition to core histones, a linker histone H1 exists that contacts the exit/entry of the DNA strand on the nucleosome. The nucleosome core particle, together with histone H1, is known as a chromatosome. Nucleosomes, with about 20 to 60 base pairs of linker DNA, can form, under non-physiological conditions, an approximately 10 nm beads on a string fibre. The nucleosomes bind DNA non-specifically, as required by their function in general DNA packaging. There are, however, large DNA sequence preferences that govern nucleosome positioning. This is due primarily to the varying physical properties of different DNA sequences: For instance, adenine (A), and thymine (T) is more favorably compressed into the inner minor grooves. This means nucleosomes can bind preferentially at one position approximately every 10 base pairs (the helical repeat of DNA)- where the DNA is rotated to maximise the number of A and T bases that will lie in the inner minor groove. (See nucleic acid structure.) With addition of H1, during mitosis the beads-on-a-string structure can coil into a 30 nm-diameter helical structure known as the 30 nm fibre or filament. The precise structure of the chromatin fiber in the cell is not known in detail. This level of chromatin structure is thought to be the form of heterochromatin, which contains mostly transcriptionally silent genes. Electron microscopy studies have demonstrated that the 30 nm fiber is highly dynamic such that it unfolds into a 10 nm fiber beads-on-a-string structure when transversed by an RNA polymerase engaged in transcription. The existing models commonly accept that the nucleosomes lie perpendicular to the axis of the fibre, with linker histones arranged internally. A stable 30 nm fibre relies on the regular positioning of nucleosomes along DNA. Linker DNA is relatively resistant to bending and rotation. This makes the length of linker DNA critical to the stability of the fibre, requiring nucleosomes to be separated by lengths that permit rotation and folding into the required orientation without excessive stress to the DNA. In this view, different lengths of the linker DNA should produce different folding topologies of the chromatin fiber. Recent theoretical work, based on electron-microscopy images of reconstituted fibers supports this view. The beads-on-a-string chromatin structure has a tendency to form loops. These loops allow interactions between different regions of DNA by bringing them closer to each other, which increases the efficiency of gene interactions. This process is dynamic, with loops forming and disappearing. The loops are regulated by two main elements: There are many other elements involved. For example, Jpx regulates the binding sites of CTCF molecules along the DNA fiber. The spatial arrangement of the chromatin within the nucleus is not random - specific regions of the chromatin can be found in certain territories. Territories are, for example, the lamina-associated domains (LADs), and the topologically associating domains (TADs), which are bound together by protein complexes. Currently, polymer models such as the Strings & Binders Switch (SBS) model and the Dynamic Loop (DL) model are used to describe the folding of chromatin within the nucleus. The arrangement of chromatin within the nucleus may also play a role in nuclear stress and restoring nuclear membrane deformation by mechanical stress. When chromatin is condensed, the nucleus becomes more rigid. When chromatin is decondensed, the nucleus becomes more elastic with less force exerted on the inner nuclear membrane. This observation sheds light on other possible cellular functions of chromatin organization outside of genomic regulation. Chromatin and its interaction with enzymes has been researched, and a conclusion being made is that it is relevant and an important factor in gene expression. Vincent G. Allfrey, a professor at Rockefeller University, stated that RNA synthesis is related to histone acetylation. The lysine amino acid attached to the end of the histones is positively charged. The acetylation of these tails would make the chromatin ends neutral, allowing for DNA access. When the chromatin decondenses, the DNA is open to entry of molecular machinery. Fluctuations between open and closed chromatin may contribute to the discontinuity of transcription, or transcriptional bursting. Other factors are probably involved, such as the association and dissociation of transcription factor complexes with chromatin. Specifically, RNA polymerase and transcriptional proteins have been shown to congregate into droplets via phase separation, and recent studies have suggested that 10 nm chromatin demonstrates liquid-like behavior increasing the targetability of genomic DNA. The interactions between linker histones and disordered tail regions act as an electrostatic glue organizing large-scale chromatin into a dynamic, liquid-like domain. Decreased chromatin compaction comes with increased chromatin mobility and easier transcriptional access to DNA. The phenomenon, as opposed to simple probabilistic models of transcription, can account for the high variability in gene expression occurring between cells in isogenic populations. During metazoan spermiogenesis, the spermatid's chromatin is remodeled into a more spaced-packaged, widened, almost crystal-like structure. This process is associated with the cessation of transcription and involves nuclear protein exchange. The histones are mostly displaced, and replaced by protamines (small, arginine-rich proteins). It is proposed that in yeast, regions devoid of histones become very fragile after transcription; HMO1, an HMG-box protein, helps in stabilizing nucleosomes-free chromatin. A variety of internal and external agents can cause DNA damage in cells. Many factors influence how the repair route is selected, including the cell cycle phase and chromatin segment where the break occurred. In terms of initiating 5’ end DNA repair, the p53 binding protein 1 (53BP1) and BRCA1 are important protein components that influence double-strand break repair pathway selection. The 53BP1 complex attaches to chromatin near DNA breaks and activates downstream factors such as Rap1-Interacting Factor 1 (RIF1) and shieldin, which protects DNA ends against nucleolytic destruction. DNA damage process occurs within the condition of chromatin, and the constantly changing chromatin environment has a large effect on it. Accessing and repairing the damaged cell of DNA, the genome condenses into chromatin and repairing it through modifying the histone residues. Through altering the chromatin structure, histones residues are adding chemical groups namely phosphate, acetyl and one or more methyl groups and these control the expressions of gene building by proteins to acquire DNA. Moreover, resynthesis of the delighted zone, DNA will be repaired by processing and restructuring the damaged bases. In order to maintain genomic integrity, “homologous recombination and classical non-homologous end joining process” has been followed by DNA to be repaired. The packaging of eukaryotic DNA into chromatin presents a barrier to all DNA-based processes that require recruitment of enzymes to their sites of action. To allow the critical cellular process of DNA repair, the chromatin must be remodeled. In eukaryotes, ATP-dependent chromatin remodeling complexes and histone-modifying enzymes are two predominant factors employed to accomplish this remodeling process. Chromatin relaxation occurs rapidly at the site of DNA damage. This process is initiated by PARP1 protein that starts to appear at DNA damage in less than a second, with half maximum accumulation within 1.6 seconds after the damage occurs. Next the chromatin remodeler Alc1 quickly attaches to the product of PARP1, and completes arrival at the DNA damage within 10 seconds of the damage. About half of the maximum chromatin relaxation, presumably due to action of Alc1, occurs by 10 seconds. This then allows recruitment of the DNA repair enzyme MRE11, to initiate DNA repair, within 13 seconds. γH2AX, the phosphorylated form of H2AX is also involved in the early steps leading to chromatin decondensation after DNA damage occurrence. The histone variant H2AX constitutes about 10% of the H2A histones in human chromatin. γH2AX (H2AX phosphorylated on serine 139) can be detected as soon as 20 seconds after irradiation of cells (with DNA double-strand break formation), and half maximum accumulation of γH2AX occurs in one minute. The extent of chromatin with phosphorylated γH2AX is about two million base pairs at the site of a DNA double-strand break. γH2AX does not, itself, cause chromatin decondensation, but within 30 seconds of irradiation, RNF8 protein can be detected in association with γH2AX. RNF8 mediates extensive chromatin decondensation, through its subsequent interaction with CHD4, a component of the nucleosome remodeling and deacetylase complex NuRD. After undergoing relaxation subsequent to DNA damage, followed by DNA repair, chromatin recovers to a compaction state close to its pre-damage level after about 20 min. It has been a puzzle how decondensed interphase chromosomes remain essentially unknotted. The natural expectation is that in the presence of type II DNA topoisomerases that permit passages of double-stranded DNA regions through each other, all chromosomes should reach the state of topological equilibrium. The topological equilibrium in highly crowded interphase chromosomes forming chromosome territories would result in formation of highly knotted chromatin fibres. However, Chromosome Conformation Capture (3C) methods revealed that the decay of contacts with the genomic distance in interphase chromosomes is practically the same as in the crumpled globule state that is formed when long polymers condense without formation of any knots. To remove knots from highly crowded chromatin, one would need an active process that should not only provide the energy to move the system from the state of topological equilibrium but also guide topoisomerase-mediated passages in such a way that knots would be efficiently unknotted instead of making the knots even more complex. It has been shown that the process of chromatin-loop extrusion is ideally suited to actively unknot chromatin fibres in interphase chromosomes. The term, introduced by Walther Flemming, has multiple meanings: The first definition allows for "chromatins" to be defined in other domains of life like bacteria and archaea, using any DNA-binding proteins that condenses the molecule. These proteins are usually referred to nucleoid-associated proteins (NAPs); examples include AsnC/LrpC with HU. In addition, some archaea do produce nucleosomes from proteins homologous to eukaryotic histones. Chromatin Remodeling: Chromatin remodeling can result from covalent modification of histones that physically remodel, move or remove nucleosomes. Studies of Sanosaka et al 2022, says that Chromatin remodeler CHD7 regulate cell type-specific gene expression in human neural crest cells. The following scientists were recognized for their contributions to chromatin research with Nobel Prizes:	[ { "paragraph_id": 0, "text": "Chromatin is a complex of DNA and protein found in eukaryotic cells. The primary function is to package long DNA molecules into more compact, denser structures. This prevents the strands from becoming tangled and also plays important roles in reinforcing the DNA during cell division, preventing DNA damage, and regulating gene expression and DNA replication. During mitosis and meiosis, chromatin facilitates proper segregation of the chromosomes in anaphase; the characteristic shapes of chromosomes visible during this stage are the result of DNA being coiled into highly condensed chromatin.", "title": "" }, { "paragraph_id": 1, "text": "The primary protein components of chromatin are histones. An octamer of two sets of four histone cores (Histone H2A, Histone H2B, Histone H3, and Histone H4) bind to DNA and function as \"anchors\" around which the strands are wound. In general, there are three levels of chromatin organization:", "title": "" }, { "paragraph_id": 2, "text": "Many organisms, however, do not follow this organization scheme. For example, spermatozoa and avian red blood cells have more tightly packed chromatin than most eukaryotic cells, and trypanosomatid protozoa do not condense their chromatin into visible chromosomes at all. Prokaryotic cells have entirely different structures for organizing their DNA (the prokaryotic chromosome equivalent is called a genophore and is localized within the nucleoid region).", "title": "" }, { "paragraph_id": 3, "text": "The overall structure of the chromatin network further depends on the stage of the cell cycle. During interphase, the chromatin is structurally loose to allow access to RNA and DNA polymerases that transcribe and replicate the DNA. The local structure of chromatin during interphase depends on the specific genes present in the DNA. Regions of DNA containing genes which are actively transcribed (\"turned on\") are less tightly compacted and closely associated with RNA polymerases in a structure known as euchromatin, while regions containing inactive genes (\"turned off\") are generally more condensed and associated with structural proteins in heterochromatin. Epigenetic modification of the structural proteins in chromatin via methylation and acetylation also alters local chromatin structure and therefore gene expression. There is limited understanding of chromatin structure and it is active area of research in molecular biology.", "title": "" }, { "paragraph_id": 4, "text": "Chromatin undergoes various structural changes during a cell cycle. Histone proteins are the basic packers and arrangers of chromatin and can be modified by various post-translational modifications to alter chromatin packing (histone modification). Most modifications occur on histone tails. The positively charged histone cores only partially counteract the negative charge of the DNA phosphate backbone resulting in a negative net charge of the overall structure. An imbalance of charge within the polymer causes electrostatic repulsion between neighboring chromatin regions that promote interactions with positively charged proteins, molecules, and cations. As these modifications occur, the electrostatic environment surrounding the chromatin will flux and the level of chromatin compaction will alter. The consequences in terms of chromatin accessibility and compaction depend both on the modified amino acid and the type of modification. For example, histone acetylation results in loosening and increased accessibility of chromatin for replication and transcription. Lysine trimethylation can either lead to increased transcriptional activity (trimethylation of histone H3 lysine 4) or transcriptional repression and chromatin compaction (trimethylation of histone H3, lysine 9 or lysine 27). Several studies suggested that different modifications could occur simultaneously. For example, it was proposed that a bivalent structure (with trimethylation of both lysine 4 and 27 on histone H3) is involved in early mammalian development. Another study tested the role of acetylation of histone 4 on lysine 16 on chromatin structure and found that homogeneous acetylation inhibited 30 nm chromatin formation and blocked adenosine triphosphate remodeling. This singular modification changed the dynamics of the chromatin which shows that acetylation of H4 at K16 is vital for proper intra- and inter- functionality of chromatin structure.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 5, "text": "Polycomb-group proteins play a role in regulating genes through modulation of chromatin structure.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 6, "text": "For additional information, see Chromatin variant, Histone modifications in chromatin regulation and RNA polymerase control by chromatin structure.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 7, "text": "In nature, DNA can form three structures, A-, B-, and Z-DNA. A- and B-DNA are very similar, forming right-handed helices, whereas Z-DNA is a left-handed helix with a zig-zag phosphate backbone. Z-DNA is thought to play a specific role in chromatin structure and transcription because of the properties of the junction between B- and Z-DNA.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 8, "text": "At the junction of B- and Z-DNA, one pair of bases is flipped out from normal bonding. These play a dual role of a site of recognition by many proteins and as a sink for torsional stress from RNA polymerase or nucleosome binding.DNA bases are stored as a code structure with four chemical bases such as “Adenine (A), Guanine (G), Cytosine (C), and Thymine (T)”. The order and sequences of these chemical structures of DNA are reflected as information available for the creation and control of human organisms. “A with T and C with G” pairing up to build the DNA base pair. Sugar and phosphate molecules are also paired with these bases, making DNA nucleotides arrange 2 long spiral strands unitedly called “double helix”. In eukaryotes, DNA consists of a cell nucleus and the DNA is providing strength and direction to the mechanism of heredity. Moreover, between the nitrogenous bonds of the 2 DNA, homogenous bonds are forming.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 9, "text": "", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 10, "text": "The basic repeat element of chromatin is the nucleosome, interconnected by sections of linker DNA, a far shorter arrangement than pure DNA in solution.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 11, "text": "In addition to core histones, a linker histone H1 exists that contacts the exit/entry of the DNA strand on the nucleosome. The nucleosome core particle, together with histone H1, is known as a chromatosome. Nucleosomes, with about 20 to 60 base pairs of linker DNA, can form, under non-physiological conditions, an approximately 10 nm beads on a string fibre.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 12, "text": "The nucleosomes bind DNA non-specifically, as required by their function in general DNA packaging. There are, however, large DNA sequence preferences that govern nucleosome positioning. This is due primarily to the varying physical properties of different DNA sequences: For instance, adenine (A), and thymine (T) is more favorably compressed into the inner minor grooves. This means nucleosomes can bind preferentially at one position approximately every 10 base pairs (the helical repeat of DNA)- where the DNA is rotated to maximise the number of A and T bases that will lie in the inner minor groove. (See nucleic acid structure.)", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 13, "text": "With addition of H1, during mitosis the beads-on-a-string structure can coil into a 30 nm-diameter helical structure known as the 30 nm fibre or filament. The precise structure of the chromatin fiber in the cell is not known in detail.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 14, "text": "This level of chromatin structure is thought to be the form of heterochromatin, which contains mostly transcriptionally silent genes. Electron microscopy studies have demonstrated that the 30 nm fiber is highly dynamic such that it unfolds into a 10 nm fiber beads-on-a-string structure when transversed by an RNA polymerase engaged in transcription.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 15, "text": "The existing models commonly accept that the nucleosomes lie perpendicular to the axis of the fibre, with linker histones arranged internally. A stable 30 nm fibre relies on the regular positioning of nucleosomes along DNA. Linker DNA is relatively resistant to bending and rotation. This makes the length of linker DNA critical to the stability of the fibre, requiring nucleosomes to be separated by lengths that permit rotation and folding into the required orientation without excessive stress to the DNA. In this view, different lengths of the linker DNA should produce different folding topologies of the chromatin fiber. Recent theoretical work, based on electron-microscopy images of reconstituted fibers supports this view.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 16, "text": "The beads-on-a-string chromatin structure has a tendency to form loops. These loops allow interactions between different regions of DNA by bringing them closer to each other, which increases the efficiency of gene interactions. This process is dynamic, with loops forming and disappearing. The loops are regulated by two main elements:", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 17, "text": "There are many other elements involved. For example, Jpx regulates the binding sites of CTCF molecules along the DNA fiber.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 18, "text": "The spatial arrangement of the chromatin within the nucleus is not random - specific regions of the chromatin can be found in certain territories. Territories are, for example, the lamina-associated domains (LADs), and the topologically associating domains (TADs), which are bound together by protein complexes. Currently, polymer models such as the Strings & Binders Switch (SBS) model and the Dynamic Loop (DL) model are used to describe the folding of chromatin within the nucleus. The arrangement of chromatin within the nucleus may also play a role in nuclear stress and restoring nuclear membrane deformation by mechanical stress. When chromatin is condensed, the nucleus becomes more rigid. When chromatin is decondensed, the nucleus becomes more elastic with less force exerted on the inner nuclear membrane. This observation sheds light on other possible cellular functions of chromatin organization outside of genomic regulation.", "title": "Dynamic chromatin structure and hierarchy" }, { "paragraph_id": 19, "text": "Chromatin and its interaction with enzymes has been researched, and a conclusion being made is that it is relevant and an important factor in gene expression. Vincent G. Allfrey, a professor at Rockefeller University, stated that RNA synthesis is related to histone acetylation. The lysine amino acid attached to the end of the histones is positively charged. The acetylation of these tails would make the chromatin ends neutral, allowing for DNA access.", "title": "Chromatin and bursts of transcription" }, { "paragraph_id": 20, "text": "When the chromatin decondenses, the DNA is open to entry of molecular machinery. Fluctuations between open and closed chromatin may contribute to the discontinuity of transcription, or transcriptional bursting. Other factors are probably involved, such as the association and dissociation of transcription factor complexes with chromatin. Specifically, RNA polymerase and transcriptional proteins have been shown to congregate into droplets via phase separation, and recent studies have suggested that 10 nm chromatin demonstrates liquid-like behavior increasing the targetability of genomic DNA. The interactions between linker histones and disordered tail regions act as an electrostatic glue organizing large-scale chromatin into a dynamic, liquid-like domain. Decreased chromatin compaction comes with increased chromatin mobility and easier transcriptional access to DNA. The phenomenon, as opposed to simple probabilistic models of transcription, can account for the high variability in gene expression occurring between cells in isogenic populations.", "title": "Chromatin and bursts of transcription" }, { "paragraph_id": 21, "text": "During metazoan spermiogenesis, the spermatid's chromatin is remodeled into a more spaced-packaged, widened, almost crystal-like structure. This process is associated with the cessation of transcription and involves nuclear protein exchange. The histones are mostly displaced, and replaced by protamines (small, arginine-rich proteins). It is proposed that in yeast, regions devoid of histones become very fragile after transcription; HMO1, an HMG-box protein, helps in stabilizing nucleosomes-free chromatin.", "title": "Chromatin and bursts of transcription" }, { "paragraph_id": 22, "text": "A variety of internal and external agents can cause DNA damage in cells. Many factors influence how the repair route is selected, including the cell cycle phase and chromatin segment where the break occurred. In terms of initiating 5’ end DNA repair, the p53 binding protein 1 (53BP1) and BRCA1 are important protein components that influence double-strand break repair pathway selection. The 53BP1 complex attaches to chromatin near DNA breaks and activates downstream factors such as Rap1-Interacting Factor 1 (RIF1) and shieldin, which protects DNA ends against nucleolytic destruction. DNA damage process occurs within the condition of chromatin, and the constantly changing chromatin environment has a large effect on it. Accessing and repairing the damaged cell of DNA, the genome condenses into chromatin and repairing it through modifying the histone residues. Through altering the chromatin structure, histones residues are adding chemical groups namely phosphate, acetyl and one or more methyl groups and these control the expressions of gene building by proteins to acquire DNA. Moreover, resynthesis of the delighted zone, DNA will be repaired by processing and restructuring the damaged bases. In order to maintain genomic integrity, “homologous recombination and classical non-homologous end joining process” has been followed by DNA to be repaired.", "title": "Chromatin and DNA repair" }, { "paragraph_id": 23, "text": "The packaging of eukaryotic DNA into chromatin presents a barrier to all DNA-based processes that require recruitment of enzymes to their sites of action. To allow the critical cellular process of DNA repair, the chromatin must be remodeled. In eukaryotes, ATP-dependent chromatin remodeling complexes and histone-modifying enzymes are two predominant factors employed to accomplish this remodeling process.", "title": "Chromatin and DNA repair" }, { "paragraph_id": 24, "text": "Chromatin relaxation occurs rapidly at the site of DNA damage. This process is initiated by PARP1 protein that starts to appear at DNA damage in less than a second, with half maximum accumulation within 1.6 seconds after the damage occurs. Next the chromatin remodeler Alc1 quickly attaches to the product of PARP1, and completes arrival at the DNA damage within 10 seconds of the damage. About half of the maximum chromatin relaxation, presumably due to action of Alc1, occurs by 10 seconds. This then allows recruitment of the DNA repair enzyme MRE11, to initiate DNA repair, within 13 seconds.", "title": "Chromatin and DNA repair" }, { "paragraph_id": 25, "text": "γH2AX, the phosphorylated form of H2AX is also involved in the early steps leading to chromatin decondensation after DNA damage occurrence. The histone variant H2AX constitutes about 10% of the H2A histones in human chromatin. γH2AX (H2AX phosphorylated on serine 139) can be detected as soon as 20 seconds after irradiation of cells (with DNA double-strand break formation), and half maximum accumulation of γH2AX occurs in one minute. The extent of chromatin with phosphorylated γH2AX is about two million base pairs at the site of a DNA double-strand break. γH2AX does not, itself, cause chromatin decondensation, but within 30 seconds of irradiation, RNF8 protein can be detected in association with γH2AX. RNF8 mediates extensive chromatin decondensation, through its subsequent interaction with CHD4, a component of the nucleosome remodeling and deacetylase complex NuRD.", "title": "Chromatin and DNA repair" }, { "paragraph_id": 26, "text": "After undergoing relaxation subsequent to DNA damage, followed by DNA repair, chromatin recovers to a compaction state close to its pre-damage level after about 20 min.", "title": "Chromatin and DNA repair" }, { "paragraph_id": 27, "text": "It has been a puzzle how decondensed interphase chromosomes remain essentially unknotted. The natural expectation is that in the presence of type II DNA topoisomerases that permit passages of double-stranded DNA regions through each other, all chromosomes should reach the state of topological equilibrium. The topological equilibrium in highly crowded interphase chromosomes forming chromosome territories would result in formation of highly knotted chromatin fibres. However, Chromosome Conformation Capture (3C) methods revealed that the decay of contacts with the genomic distance in interphase chromosomes is practically the same as in the crumpled globule state that is formed when long polymers condense without formation of any knots. To remove knots from highly crowded chromatin, one would need an active process that should not only provide the energy to move the system from the state of topological equilibrium but also guide topoisomerase-mediated passages in such a way that knots would be efficiently unknotted instead of making the knots even more complex. It has been shown that the process of chromatin-loop extrusion is ideally suited to actively unknot chromatin fibres in interphase chromosomes.", "title": "Chromatin and knots" }, { "paragraph_id": 28, "text": "The term, introduced by Walther Flemming, has multiple meanings:", "title": "Chromatin: alternative definitions" }, { "paragraph_id": 29, "text": "The first definition allows for \"chromatins\" to be defined in other domains of life like bacteria and archaea, using any DNA-binding proteins that condenses the molecule. These proteins are usually referred to nucleoid-associated proteins (NAPs); examples include AsnC/LrpC with HU. In addition, some archaea do produce nucleosomes from proteins homologous to eukaryotic histones.", "title": "Chromatin: alternative definitions" }, { "paragraph_id": 30, "text": "Chromatin Remodeling:", "title": "Chromatin: alternative definitions" }, { "paragraph_id": 31, "text": "Chromatin remodeling can result from covalent modification of histones that physically remodel, move or remove nucleosomes. Studies of Sanosaka et al 2022, says that Chromatin remodeler CHD7 regulate cell type-specific gene expression in human neural crest cells.", "title": "Chromatin: alternative definitions" }, { "paragraph_id": 32, "text": "The following scientists were recognized for their contributions to chromatin research with Nobel Prizes:", "title": "Nobel Prizes" } ]	Chromatin is a complex of DNA and protein found in eukaryotic cells. The primary function is to package long DNA molecules into more compact, denser structures. This prevents the strands from becoming tangled and also plays important roles in reinforcing the DNA during cell division, preventing DNA damage, and regulating gene expression and DNA replication. During mitosis and meiosis, chromatin facilitates proper segregation of the chromosomes in anaphase; the characteristic shapes of chromosomes visible during this stage are the result of DNA being coiled into highly condensed chromatin. The primary protein components of chromatin are histones. An octamer of two sets of four histone cores bind to DNA and function as "anchors" around which the strands are wound. In general, there are three levels of chromatin organization: DNA wraps around histone proteins, forming nucleosomes and the so-called beads on a string structure (euchromatin). Multiple histones wrap into a 30-nanometer fiber consisting of nucleosome arrays in their most compact form (heterochromatin). Higher-level DNA supercoiling of the 30 nm fiber produces the metaphase chromosome. Many organisms, however, do not follow this organization scheme. For example, spermatozoa and avian red blood cells have more tightly packed chromatin than most eukaryotic cells, and trypanosomatid protozoa do not condense their chromatin into visible chromosomes at all. Prokaryotic cells have entirely different structures for organizing their DNA. The overall structure of the chromatin network further depends on the stage of the cell cycle. During interphase, the chromatin is structurally loose to allow access to RNA and DNA polymerases that transcribe and replicate the DNA. The local structure of chromatin during interphase depends on the specific genes present in the DNA. Regions of DNA containing genes which are actively transcribed are less tightly compacted and closely associated with RNA polymerases in a structure known as euchromatin, while regions containing inactive genes are generally more condensed and associated with structural proteins in heterochromatin. Epigenetic modification of the structural proteins in chromatin via methylation and acetylation also alters local chromatin structure and therefore gene expression. There is limited understanding of chromatin structure and it is active area of research in molecular biology.	2001-10-28T17:25:35Z	2023-10-17T07:52:54Z	[ "Template:Short description", "Template:Main", "Template:Cite book", "Template:Chromo", "Template:Div col end", "Template:Open access", "Template:ISBN", "Template:Div col", "Template:Notelist", "Template:Reflist", "Template:Cite journal", "Template:Authority control", "Template:Update", "Template:Efn", "Template:Further", "Template:Cite web", "Template:Citation", "Template:Nucleus", "Template:Portal bar", "Template:Main article", "Template:PDB", "Template:Citation needed" ]	https://en.wikipedia.org/wiki/Chromatin
6,934	Condition number	In numerical analysis, the condition number of a function measures how much the output value of the function can change for a small change in the input argument. This is used to measure how sensitive a function is to changes or errors in the input, and how much error in the output results from an error in the input. Very frequently, one is solving the inverse problem: given f ( x ) = y , {\displaystyle f(x)=y,} one is solving for x, and thus the condition number of the (local) inverse must be used. The condition number is derived from the theory of propagation of uncertainty, and is formally defined as the value of the asymptotic worst-case relative change in output for a relative change in input. The "function" is the solution of a problem and the "arguments" are the data in the problem. The condition number is frequently applied to questions in linear algebra, in which case the derivative is straightforward but the error could be in many different directions, and is thus computed from the geometry of the matrix. More generally, condition numbers can be defined for non-linear functions in several variables. A problem with a low condition number is said to be well-conditioned, while a problem with a high condition number is said to be ill-conditioned. In non-mathematical terms, an ill-conditioned problem is one where, for a small change in the inputs (the independent variables) there is a large change in the answer or dependent variable. This means that the correct solution/answer to the equation becomes hard to find. The condition number is a property of the problem. Paired with the problem are any number of algorithms that can be used to solve the problem, that is, to calculate the solution. Some algorithms have a property called backward stability; in general, a backward stable algorithm can be expected to accurately solve well-conditioned problems. Numerical analysis textbooks give formulas for the condition numbers of problems and identify known backward stable algorithms. As a rule of thumb, if the condition number κ ( A ) = 10 k {\displaystyle \kappa (A)=10^{k}} , then you may lose up to k {\displaystyle k} digits of accuracy on top of what would be lost to the numerical method due to loss of precision from arithmetic methods. However, the condition number does not give the exact value of the maximum inaccuracy that may occur in the algorithm. It generally just bounds it with an estimate (whose computed value depends on the choice of the norm to measure the inaccuracy). Given a problem f {\displaystyle f} and an algorithm f ~ {\displaystyle {\tilde {f}}} with an input x {\displaystyle x} and output f ~ ( x ) , {\displaystyle {\tilde {f}}(x),} the error is δ f ( x ) := f ( x ) − f ~ ( x ) , {\displaystyle \delta f(x):=f(x)-{\tilde {f}}(x),} the absolute error is ‖ δ f ( x ) ‖ = ‖ f ( x ) − f ~ ( x ) ‖ {\displaystyle \\|\delta f(x)\\|=\left\\|f(x)-{\tilde {f}}(x)\right\\|} and the relative error is ‖ δ f ( x ) ‖ / ‖ f ( x ) ‖ = ‖ f ( x ) − f ~ ( x ) ‖ / ‖ f ( x ) ‖ . {\displaystyle \\|\delta f(x)\\|/\\|f(x)\\|=\left\\|f(x)-{\tilde {f}}(x)\right\\|/\\|f(x)\\|.} In this context, the absolute condition number of a problem f {\displaystyle f} is and the relative condition number is For example, the condition number associated with the linear equation Ax = b gives a bound on how inaccurate the solution x will be after approximation. Note that this is before the effects of round-off error are taken into account; conditioning is a property of the matrix, not the algorithm or floating-point accuracy of the computer used to solve the corresponding system. In particular, one should think of the condition number as being (very roughly) the rate at which the solution x will change with respect to a change in b. Thus, if the condition number is large, even a small error in b may cause a large error in x. On the other hand, if the condition number is small, then the error in x will not be much bigger than the error in b. The condition number is defined more precisely to be the maximum ratio of the relative error in x to the relative error in b. Let e be the error in b. Assuming that A is a nonsingular matrix, the error in the solution Ab is Ae. The ratio of the relative error in the solution to the relative error in b is The maximum value (for nonzero b and e) is then seen to be the product of the two operator norms as follows: The same definition is used for any consistent norm, i.e. one that satisfies When the condition number is exactly one (which can only happen if A is a scalar multiple of a linear isometry), then a solution algorithm can find (in principle, meaning if the algorithm introduces no errors of its own) an approximation of the solution whose precision is no worse than that of the data. However, it does not mean that the algorithm will converge rapidly to this solution, just that it will not diverge arbitrarily because of inaccuracy on the source data (backward error), provided that the forward error introduced by the algorithm does not diverge as well because of accumulating intermediate rounding errors. The condition number may also be infinite, but this implies that the problem is ill-posed (does not possess a unique, well-defined solution for each choice of data; that is, the matrix is not invertible), and no algorithm can be expected to reliably find a solution. The definition of the condition number depends on the choice of norm, as can be illustrated by two examples. If ‖ ⋅ ‖ {\displaystyle \\|\cdot \\|} is the matrix norm induced by the (vector) Euclidean norm (sometimes known as the L norm and typically denoted as ‖ ⋅ ‖ 2 {\displaystyle \\|\cdot \\|_{2}} ), then where σ max ( A ) {\displaystyle \sigma _{\text{max}}(A)} and σ min ( A ) {\displaystyle \sigma _{\text{min}}(A)} are maximal and minimal singular values of A {\displaystyle A} respectively. Hence: The condition number with respect to L arises so often in numerical linear algebra that it is given a name, the condition number of a matrix. If ‖ ⋅ ‖ {\displaystyle \\|\cdot \\|} is the matrix norm induced by the L ∞ {\displaystyle L^{\infty }} (vector) norm and A {\displaystyle A} is lower triangular non-singular (i.e. a i i ≠ 0 {\displaystyle a_{ii}\neq 0} for all i {\displaystyle i} ), then recalling that the eigenvalues of any triangular matrix are simply the diagonal entries. The condition number computed with this norm is generally larger than the condition number computed relative to the Euclidean norm, but it can be evaluated more easily (and this is often the only practicably computable condition number, when the problem to solve involves a non-linear algebra, for example when approximating irrational and transcendental functions or numbers with numerical methods). If the condition number is not significantly larger than one, the matrix is well-conditioned, which means that its inverse can be computed with good accuracy. If the condition number is very large, then the matrix is said to be ill-conditioned. Practically, such a matrix is almost singular, and the computation of its inverse, or solution of a linear system of equations is prone to large numerical errors. A matrix that is not invertible is often said to have a condition number equal to infinity. Alternatively, it can be defined as κ ( A ) = ‖ A ‖ ‖ A † ‖ {\displaystyle \kappa (A)=\\|A\\|\\|A^{\dagger }\\|} , where A † {\displaystyle A^{\dagger }} is the Moore-Penrose pseudoinverse. For square matrices, this unfortunately makes the condition number discontinuous, but it is a useful definition for rectangular matrices, which are never invertible but are still used to define systems of equations. Condition numbers can also be defined for nonlinear functions, and can be computed using calculus. The condition number varies with the point; in some cases one can use the maximum (or supremum) condition number over the domain of the function or domain of the question as an overall condition number, while in other cases the condition number at a particular point is of more interest. The condition number of a differentiable function f {\displaystyle f} in one variable as a function is \| x f ′ / f \| {\displaystyle \left\|xf'/f\right\|} . Evaluated at a point x {\displaystyle x} , this is Note that this is the absolute value of the elasticity of a function in economics. Most elegantly, this can be understood as (the absolute value of) the ratio of the logarithmic derivative of f {\displaystyle f} , which is ( log f ) ′ = f ′ / f {\displaystyle (\log f)'=f'/f} , and the logarithmic derivative of x {\displaystyle x} , which is ( log x ) ′ = x ′ / x = 1 / x {\displaystyle (\log x)'=x'/x=1/x} , yielding a ratio of x f ′ / f {\displaystyle xf'/f} . This is because the logarithmic derivative is the infinitesimal rate of relative change in a function: it is the derivative f ′ {\displaystyle f'} scaled by the value of f {\displaystyle f} . Note that if a function has a zero at a point, its condition number at the point is infinite, as infinitesimal changes in the input can change the output from zero to positive or negative, yielding a ratio with zero in the denominator, hence infinite relative change. More directly, given a small change Δ x {\displaystyle \Delta x} in x {\displaystyle x} , the relative change in x {\displaystyle x} is [ ( x + Δ x ) − x ] / x = ( Δ x ) / x {\displaystyle [(x+\Delta x)-x]/x=(\Delta x)/x} , while the relative change in f ( x ) {\displaystyle f(x)} is [ f ( x + Δ x ) − f ( x ) ] / f ( x ) {\displaystyle [f(x+\Delta x)-f(x)]/f(x)} . Taking the ratio yields The last term is the difference quotient (the slope of the secant line), and taking the limit yields the derivative. Condition numbers of common elementary functions are particularly important in computing significant figures and can be computed immediately from the derivative; see significance arithmetic of transcendental functions. A few important ones are given below: Condition numbers can be defined for any function f {\displaystyle f} mapping its data from some domain (e.g. an m {\displaystyle m} -tuple of real numbers x {\displaystyle x} ) into some codomain (e.g. an n {\displaystyle n} -tuple of real numbers f ( x ) {\displaystyle f(x)} ), where both the domain and codomain are Banach spaces. They express how sensitive that function is to small changes (or small errors) in its arguments. This is crucial in assessing the sensitivity and potential accuracy difficulties of numerous computational problems, for example, polynomial root finding or computing eigenvalues. The condition number of f {\displaystyle f} at a point x {\displaystyle x} (specifically, its relative condition number) is then defined to be the maximum ratio of the fractional change in f ( x ) {\displaystyle f(x)} to any fractional change in x {\displaystyle x} , in the limit where the change δ x {\displaystyle \delta x} in x {\displaystyle x} becomes infinitesimally small: where ‖ ⋅ ‖ {\displaystyle \\|\cdot \\|} is a norm on the domain/codomain of f {\displaystyle f} . If f {\displaystyle f} is differentiable, this is equivalent to: where J ( x ) {\displaystyle J(x)} denotes the Jacobian matrix of partial derivatives of f {\displaystyle f} at x {\displaystyle x} , and ‖ J ( x ) ‖ {\displaystyle \\|J(x)\\|} is the induced norm on the matrix.	[ { "paragraph_id": 0, "text": "In numerical analysis, the condition number of a function measures how much the output value of the function can change for a small change in the input argument. This is used to measure how sensitive a function is to changes or errors in the input, and how much error in the output results from an error in the input. Very frequently, one is solving the inverse problem: given f ( x ) = y , {\\displaystyle f(x)=y,} one is solving for x, and thus the condition number of the (local) inverse must be used.", "title": "" }, { "paragraph_id": 1, "text": "The condition number is derived from the theory of propagation of uncertainty, and is formally defined as the value of the asymptotic worst-case relative change in output for a relative change in input. The \"function\" is the solution of a problem and the \"arguments\" are the data in the problem. The condition number is frequently applied to questions in linear algebra, in which case the derivative is straightforward but the error could be in many different directions, and is thus computed from the geometry of the matrix. More generally, condition numbers can be defined for non-linear functions in several variables.", "title": "" }, { "paragraph_id": 2, "text": "A problem with a low condition number is said to be well-conditioned, while a problem with a high condition number is said to be ill-conditioned. In non-mathematical terms, an ill-conditioned problem is one where, for a small change in the inputs (the independent variables) there is a large change in the answer or dependent variable. This means that the correct solution/answer to the equation becomes hard to find. The condition number is a property of the problem. Paired with the problem are any number of algorithms that can be used to solve the problem, that is, to calculate the solution. Some algorithms have a property called backward stability; in general, a backward stable algorithm can be expected to accurately solve well-conditioned problems. Numerical analysis textbooks give formulas for the condition numbers of problems and identify known backward stable algorithms.", "title": "" }, { "paragraph_id": 3, "text": "As a rule of thumb, if the condition number κ ( A ) = 10 k {\\displaystyle \\kappa (A)=10^{k}} , then you may lose up to k {\\displaystyle k} digits of accuracy on top of what would be lost to the numerical method due to loss of precision from arithmetic methods. However, the condition number does not give the exact value of the maximum inaccuracy that may occur in the algorithm. It generally just bounds it with an estimate (whose computed value depends on the choice of the norm to measure the inaccuracy).", "title": "" }, { "paragraph_id": 4, "text": "Given a problem f {\\displaystyle f} and an algorithm f ~ {\\displaystyle {\\tilde {f}}} with an input x {\\displaystyle x} and output f ~ ( x ) , {\\displaystyle {\\tilde {f}}(x),} the error is δ f ( x ) := f ( x ) − f ~ ( x ) , {\\displaystyle \\delta f(x):=f(x)-{\\tilde {f}}(x),} the absolute error is ‖ δ f ( x ) ‖ = ‖ f ( x ) − f ~ ( x ) ‖ {\\displaystyle \\\|\\delta f(x)\\\|=\\left\\\|f(x)-{\\tilde {f}}(x)\\right\\\|} and the relative error is ‖ δ f ( x ) ‖ / ‖ f ( x ) ‖ = ‖ f ( x ) − f ~ ( x ) ‖ / ‖ f ( x ) ‖ . {\\displaystyle \\\|\\delta f(x)\\\|/\\\|f(x)\\\|=\\left\\\|f(x)-{\\tilde {f}}(x)\\right\\\|/\\\|f(x)\\\|.}", "title": "General definition in the context of error analysis" }, { "paragraph_id": 5, "text": "In this context, the absolute condition number of a problem f {\\displaystyle f} is", "title": "General definition in the context of error analysis" }, { "paragraph_id": 6, "text": "and the relative condition number is", "title": "General definition in the context of error analysis" }, { "paragraph_id": 7, "text": "For example, the condition number associated with the linear equation Ax = b gives a bound on how inaccurate the solution x will be after approximation. Note that this is before the effects of round-off error are taken into account; conditioning is a property of the matrix, not the algorithm or floating-point accuracy of the computer used to solve the corresponding system. In particular, one should think of the condition number as being (very roughly) the rate at which the solution x will change with respect to a change in b. Thus, if the condition number is large, even a small error in b may cause a large error in x. On the other hand, if the condition number is small, then the error in x will not be much bigger than the error in b.", "title": "Matrices" }, { "paragraph_id": 8, "text": "The condition number is defined more precisely to be the maximum ratio of the relative error in x to the relative error in b.", "title": "Matrices" }, { "paragraph_id": 9, "text": "Let e be the error in b. Assuming that A is a nonsingular matrix, the error in the solution Ab is Ae. The ratio of the relative error in the solution to the relative error in b is", "title": "Matrices" }, { "paragraph_id": 10, "text": "The maximum value (for nonzero b and e) is then seen to be the product of the two operator norms as follows:", "title": "Matrices" }, { "paragraph_id": 11, "text": "The same definition is used for any consistent norm, i.e. one that satisfies", "title": "Matrices" }, { "paragraph_id": 12, "text": "When the condition number is exactly one (which can only happen if A is a scalar multiple of a linear isometry), then a solution algorithm can find (in principle, meaning if the algorithm introduces no errors of its own) an approximation of the solution whose precision is no worse than that of the data.", "title": "Matrices" }, { "paragraph_id": 13, "text": "However, it does not mean that the algorithm will converge rapidly to this solution, just that it will not diverge arbitrarily because of inaccuracy on the source data (backward error), provided that the forward error introduced by the algorithm does not diverge as well because of accumulating intermediate rounding errors.", "title": "Matrices" }, { "paragraph_id": 14, "text": "The condition number may also be infinite, but this implies that the problem is ill-posed (does not possess a unique, well-defined solution for each choice of data; that is, the matrix is not invertible), and no algorithm can be expected to reliably find a solution.", "title": "Matrices" }, { "paragraph_id": 15, "text": "The definition of the condition number depends on the choice of norm, as can be illustrated by two examples.", "title": "Matrices" }, { "paragraph_id": 16, "text": "If ‖ ⋅ ‖ {\\displaystyle \\\|\\cdot \\\|} is the matrix norm induced by the (vector) Euclidean norm (sometimes known as the L norm and typically denoted as ‖ ⋅ ‖ 2 {\\displaystyle \\\|\\cdot \\\|_{2}} ), then", "title": "Matrices" }, { "paragraph_id": 17, "text": "where σ max ( A ) {\\displaystyle \\sigma _{\\text{max}}(A)} and σ min ( A ) {\\displaystyle \\sigma _{\\text{min}}(A)} are maximal and minimal singular values of A {\\displaystyle A} respectively. Hence:", "title": "Matrices" }, { "paragraph_id": 18, "text": "The condition number with respect to L arises so often in numerical linear algebra that it is given a name, the condition number of a matrix.", "title": "Matrices" }, { "paragraph_id": 19, "text": "If ‖ ⋅ ‖ {\\displaystyle \\\|\\cdot \\\|} is the matrix norm induced by the L ∞ {\\displaystyle L^{\\infty }} (vector) norm and A {\\displaystyle A} is lower triangular non-singular (i.e. a i i ≠ 0 {\\displaystyle a_{ii}\\neq 0} for all i {\\displaystyle i} ), then", "title": "Matrices" }, { "paragraph_id": 20, "text": "recalling that the eigenvalues of any triangular matrix are simply the diagonal entries.", "title": "Matrices" }, { "paragraph_id": 21, "text": "The condition number computed with this norm is generally larger than the condition number computed relative to the Euclidean norm, but it can be evaluated more easily (and this is often the only practicably computable condition number, when the problem to solve involves a non-linear algebra, for example when approximating irrational and transcendental functions or numbers with numerical methods).", "title": "Matrices" }, { "paragraph_id": 22, "text": "If the condition number is not significantly larger than one, the matrix is well-conditioned, which means that its inverse can be computed with good accuracy. If the condition number is very large, then the matrix is said to be ill-conditioned. Practically, such a matrix is almost singular, and the computation of its inverse, or solution of a linear system of equations is prone to large numerical errors.", "title": "Matrices" }, { "paragraph_id": 23, "text": "A matrix that is not invertible is often said to have a condition number equal to infinity. Alternatively, it can be defined as κ ( A ) = ‖ A ‖ ‖ A † ‖ {\\displaystyle \\kappa (A)=\\\|A\\\|\\\|A^{\\dagger }\\\|} , where A † {\\displaystyle A^{\\dagger }} is the Moore-Penrose pseudoinverse. For square matrices, this unfortunately makes the condition number discontinuous, but it is a useful definition for rectangular matrices, which are never invertible but are still used to define systems of equations.", "title": "Matrices" }, { "paragraph_id": 24, "text": "Condition numbers can also be defined for nonlinear functions, and can be computed using calculus. The condition number varies with the point; in some cases one can use the maximum (or supremum) condition number over the domain of the function or domain of the question as an overall condition number, while in other cases the condition number at a particular point is of more interest.", "title": "Nonlinear" }, { "paragraph_id": 25, "text": "The condition number of a differentiable function f {\\displaystyle f} in one variable as a function is \| x f ′ / f \| {\\displaystyle \\left\|xf'/f\\right\|} . Evaluated at a point x {\\displaystyle x} , this is", "title": "Nonlinear" }, { "paragraph_id": 26, "text": "Note that this is the absolute value of the elasticity of a function in economics.", "title": "Nonlinear" }, { "paragraph_id": 27, "text": "Most elegantly, this can be understood as (the absolute value of) the ratio of the logarithmic derivative of f {\\displaystyle f} , which is ( log f ) ′ = f ′ / f {\\displaystyle (\\log f)'=f'/f} , and the logarithmic derivative of x {\\displaystyle x} , which is ( log x ) ′ = x ′ / x = 1 / x {\\displaystyle (\\log x)'=x'/x=1/x} , yielding a ratio of x f ′ / f {\\displaystyle xf'/f} . This is because the logarithmic derivative is the infinitesimal rate of relative change in a function: it is the derivative f ′ {\\displaystyle f'} scaled by the value of f {\\displaystyle f} . Note that if a function has a zero at a point, its condition number at the point is infinite, as infinitesimal changes in the input can change the output from zero to positive or negative, yielding a ratio with zero in the denominator, hence infinite relative change.", "title": "Nonlinear" }, { "paragraph_id": 28, "text": "More directly, given a small change Δ x {\\displaystyle \\Delta x} in x {\\displaystyle x} , the relative change in x {\\displaystyle x} is [ ( x + Δ x ) − x ] / x = ( Δ x ) / x {\\displaystyle [(x+\\Delta x)-x]/x=(\\Delta x)/x} , while the relative change in f ( x ) {\\displaystyle f(x)} is [ f ( x + Δ x ) − f ( x ) ] / f ( x ) {\\displaystyle [f(x+\\Delta x)-f(x)]/f(x)} . Taking the ratio yields", "title": "Nonlinear" }, { "paragraph_id": 29, "text": "The last term is the difference quotient (the slope of the secant line), and taking the limit yields the derivative.", "title": "Nonlinear" }, { "paragraph_id": 30, "text": "Condition numbers of common elementary functions are particularly important in computing significant figures and can be computed immediately from the derivative; see significance arithmetic of transcendental functions. A few important ones are given below:", "title": "Nonlinear" }, { "paragraph_id": 31, "text": "Condition numbers can be defined for any function f {\\displaystyle f} mapping its data from some domain (e.g. an m {\\displaystyle m} -tuple of real numbers x {\\displaystyle x} ) into some codomain (e.g. an n {\\displaystyle n} -tuple of real numbers f ( x ) {\\displaystyle f(x)} ), where both the domain and codomain are Banach spaces. They express how sensitive that function is to small changes (or small errors) in its arguments. This is crucial in assessing the sensitivity and potential accuracy difficulties of numerous computational problems, for example, polynomial root finding or computing eigenvalues.", "title": "Nonlinear" }, { "paragraph_id": 32, "text": "The condition number of f {\\displaystyle f} at a point x {\\displaystyle x} (specifically, its relative condition number) is then defined to be the maximum ratio of the fractional change in f ( x ) {\\displaystyle f(x)} to any fractional change in x {\\displaystyle x} , in the limit where the change δ x {\\displaystyle \\delta x} in x {\\displaystyle x} becomes infinitesimally small:", "title": "Nonlinear" }, { "paragraph_id": 33, "text": "where ‖ ⋅ ‖ {\\displaystyle \\\|\\cdot \\\|} is a norm on the domain/codomain of f {\\displaystyle f} .", "title": "Nonlinear" }, { "paragraph_id": 34, "text": "If f {\\displaystyle f} is differentiable, this is equivalent to:", "title": "Nonlinear" }, { "paragraph_id": 35, "text": "where J ( x ) {\\displaystyle J(x)} denotes the Jacobian matrix of partial derivatives of f {\\displaystyle f} at x {\\displaystyle x} , and ‖ J ( x ) ‖ {\\displaystyle \\\|J(x)\\\|} is the induced norm on the matrix.", "title": "Nonlinear" } ]	In numerical analysis, the condition number of a function measures how much the output value of the function can change for a small change in the input argument. This is used to measure how sensitive a function is to changes or errors in the input, and how much error in the output results from an error in the input. Very frequently, one is solving the inverse problem: given f = y , one is solving for x, and thus the condition number of the (local) inverse must be used. The condition number is derived from the theory of propagation of uncertainty, and is formally defined as the value of the asymptotic worst-case relative change in output for a relative change in input. The "function" is the solution of a problem and the "arguments" are the data in the problem. The condition number is frequently applied to questions in linear algebra, in which case the derivative is straightforward but the error could be in many different directions, and is thus computed from the geometry of the matrix. More generally, condition numbers can be defined for non-linear functions in several variables. A problem with a low condition number is said to be well-conditioned, while a problem with a high condition number is said to be ill-conditioned. In non-mathematical terms, an ill-conditioned problem is one where, for a small change in the inputs there is a large change in the answer or dependent variable. This means that the correct solution/answer to the equation becomes hard to find. The condition number is a property of the problem. Paired with the problem are any number of algorithms that can be used to solve the problem, that is, to calculate the solution. Some algorithms have a property called backward stability; in general, a backward stable algorithm can be expected to accurately solve well-conditioned problems. Numerical analysis textbooks give formulas for the condition numbers of problems and identify known backward stable algorithms. As a rule of thumb, if the condition number κ = 10 k , then you may lose up to k digits of accuracy on top of what would be lost to the numerical method due to loss of precision from arithmetic methods. However, the condition number does not give the exact value of the maximum inaccuracy that may occur in the algorithm. It generally just bounds it with an estimate.	2001-10-29T00:24:54Z	2023-12-21T03:18:44Z	[ "Template:Short description", "Template:Clarify", "Template:What?", "Template:See also", "Template:Tmath", "Template:Reflist", "Template:Cite book" ]	https://en.wikipedia.org/wiki/Condition_number
6,936	Cheddar cheese	Cheddar cheese (or simply cheddar) is a natural cheese that is relatively hard, off-white (or orange if colourings such as annatto are added), and sometimes sharp-tasting. Cheddar originates from the English village of Cheddar in Somerset. Cheddar cheese is produced all over the world, and cheddar cheese has no protected designation of origin either in the United Kingdom or the European Union. In 2007, the protected designation of origin name "West Country Farmhouse Cheddar" was registered in the EU and (after Brexit) the UK, defined as cheddar produced from local milk within Somerset, Dorset, Devon and Cornwall and manufactured using traditional methods. Protected Geographical Indication (PGI) was registered for Orkney Scottish Island Cheddar in 2013 in the EU, which also applies under UK law. Globally, the style and quality of cheeses labelled as cheddar may vary greatly, with some processed cheeses being packaged as "cheddar". Furthermore, certain cheeses that are similar in taste and appearance to Red Leicester are sometimes marketed as "red cheddar". Cheddar is the most popular cheese in the UK, accounting for 51% of the country's £1.9 billion annual cheese market. It is the second-most popular cheese in the US behind mozzarella, with an average annual consumption of 10 lb (4.5 kg) per capita. The US produced approximately 3,000,000,000 lb (1,300,000 long tons; 1,400,000 tonnes) of cheddar cheese in 2014, and the UK produced 258,000 long tons (262,000 tonnes) in 2008. Cheddar cheese originates from the village of Cheddar in Somerset, southwest England. Cheddar Gorge on the edge of the village contains a number of caves, which provided the ideal humidity and steady temperature for maturing the cheese. Cheddar traditionally had to be made within 30 mi (48 km) of Wells Cathedral. Nineteenth-century Somerset dairyman Joseph Harding was central to the modernisation and standardisation of cheddar. For his technical innovations, promotion of dairy hygiene, and volunteer dissemination of modern cheese-making techniques, Harding has been dubbed "the father of cheddar". Harding introduced new equipment to the process of cheese-making, including his "revolving breaker" for curd cutting; the revolving breaker saved much manual effort in the cheese-making process. The "Joseph Harding method" was the first modern system for cheddar production based upon scientific principles. Harding stated that cheddar cheese is "not made in the field, nor in the byre, nor even in the cow, it is made in the dairy". Together, Joseph Harding and his wife were behind the introduction of the cheese into Scotland and North America, while his sons Henry and William Harding were responsible for introducing cheddar cheese production to Australia and facilitating the establishment of the cheese industry in New Zealand, respectively. During the Second World War and for nearly a decade thereafter, most of the milk in Britain was used to make a single kind of cheese nicknamed "government cheddar" as part of the war economy and rationing. As a result, almost all other cheese production in the country was wiped out. Before the First World War, more than 3,500 cheese producers were in Britain; fewer than 100 remained after the Second World War. According to a United States Department of Agriculture researcher, cheddar is the world's most popular cheese and is the most studied type of cheese in scientific publications. During the manufacture of cheddar, the curds and whey are separated using rennet, an enzyme complex normally produced from the stomachs of newborn calves (in vegetarian or kosher cheeses, bacterial, yeast or mould-derived chymosin is used). "Cheddaring" refers to an additional step in the production of cheddar cheese where, after heating, the curd is kneaded with salt, cut into cubes to drain the whey, and then stacked and turned. Strong, extra-mature cheddar, sometimes called vintage, needs to be matured for 15 months or more. The cheese is kept at a constant temperature, often requiring special facilities. As with other hard cheese varieties produced worldwide, caves provide an ideal environment for maturing cheese; still, today, some cheddar is matured in the caves at Wookey Hole and Cheddar Gorge. Additionally, some versions of cheddar are smoked. The ideal quality of the original Somerset cheddar was described by Joseph Harding in 1864 as "close and firm in texture, yet mellow in character or quality; it is rich with a tendency to melt in the mouth, the flavour full and fine, approaching to that of a hazelnut". Cheddar made in the classical way tends to have a sharp, pungent flavour, often slightly earthy. The "sharpness" of cheddar is associated with the levels of bitter peptides in the cheese. This bitterness has been found to be significant to the overall perception of the aged cheddar flavour. The texture is firm, with farmhouse traditional cheddar being slightly crumbly; it should also, if mature, contain large cheese crystals consisting of calcium lactate – often precipitated when matured for times longer than six months. Cheddar can be a deep to pale yellow (off-white) colour, or a yellow-orange colour when certain plant extracts are added, such as beet juice. One commonly used spice is annatto, extracted from seeds of the tropical achiote tree. Originally added to simulate the colour of high-quality milk from grass-fed Jersey and Guernsey cows, annatto may also impart a sweet, nutty flavour. The largest producer of cheddar cheese in the United States, Kraft, uses a combination of annatto and oleoresin paprika, an extract of the lipophilic (oily) portion of paprika. Cheddar was sometimes (and still can be found) packaged in black wax, but was more commonly packaged in larded cloth, which was impermeable to contaminants, but still allowed the cheese to "breathe". The Slow Food Movement has created a cheddar presidium, arguing that only three cheeses should be called "original cheddar". Their specifications, which go further than the "West Country Farmhouse Cheddar" PDO, require that cheddar be made in Somerset and with traditional methods, such as using raw milk, traditional animal rennet, and a cloth wrapping. The "cheddar cheese" name is used internationally; its name does not have a protected designation of origin, but the use of the name "West Country Farmhouse Cheddar" does. In addition to the United Kingdom, cheddar is also made in Australia, Argentina, Belgium, Canada, Germany, Ireland, the Netherlands, New Zealand, South Africa, Sweden, Finland, Uruguay and the United States. Cheddars can be either industrial or artisan cheeses. The flavour, colour, and quality of industrial cheese varies significantly, and food packaging will usually indicate a strength, such as mild, medium, strong, tasty, sharp, extra sharp, mature, old, or vintage; this may indicate the maturation period, or food additives used to enhance the flavour. Artisan varieties develop strong and diverse flavours over time. As of 2013, cheddar accounts for over 55% of the Australian cheese market, with average annual consumption around 7.5 kg (17 lb) per person. Cheddar is so commonly found that the name is rarely used: instead, cheddar is sold by strength alone as e.g. "mild", "tasty" or "sharp". Following a wheat midge outbreak in Canada in the mid-19th century, farmers in Ontario began to convert to dairy farming in large numbers, and cheddar cheese became their main exportable product, even being exported to England. By the turn of the 20th century, 1,242 cheddar factories were in Ontario, and cheddar had become Canada's second-largest export after timber. Cheddar exports totalled 234,000,000 lb (106,000,000 kg) in 1904, but by 2012, Canada was a net importer of cheese. James L. Kraft grew up on a dairy farm in Ontario, before moving to Chicago. According to the writer Sarah Champman, "Although we cannot wholly lay the decline of cheese craft in Canada at the feet of James Lewis Kraft, it did correspond with the rise of Kraft’s processed cheese empire." Most Canadian cheddar is produced in the provinces of Québec (40.8%) and Ontario (36%), though other provinces produce some and some smaller artisanal producers exist. The annual production is 120,000 tons. It is aged a minimum of three months, but much of it is held for much longer, up to 10 years. Canadian cheddar cheese soup is a featured dish at the Canada pavilion at Epcot, in Walt Disney World. Percentage of milk fat must be labelled by the words milk fat or abbreviations B.F. or M.F. Most of the cheddar produced in New Zealand is factory-made, although some are handmade by artisan cheesemakers. Factory-made cheddar is generally sold relatively young within New Zealand, but the Anchor dairy company ships New Zealand cheddars to the UK, where the blocks mature for another year or so. Only one producer of the cheese is now based in the village of Cheddar, the Cheddar Gorge Cheese Co. The name "cheddar" is not protected under European Union or UK law, though the name "West Country Farmhouse Cheddar" has an EU and (following Brexit) a UK protected designation of origin (PDO) registration, and may only be produced in Somerset, Devon, Dorset and Cornwall, using milk sourced from those counties. Cheddar is usually sold as mild, medium, mature, extra mature or vintage. Cheddar produced in Orkney is registered as an EU protected geographical indication under the name "Orkney Scottish Island Cheddar". This protection highlights the use of traditional methods, passed down through generations since 1946 and its uniqueness in comparison to other cheddar cheeses. "West Country Farmhouse Cheddar" is protected outside the UK and the EU as a Geographical Indication also in China, Georgia, Iceland, Japan, Moldova, Montenegro, Norway, Serbia, Switzerland and Ukraine. Furthermore, a Protected Geographical Indication (PGI) was registered for Orkney Scottish Island Cheddar in 2013 in the EU, which also applies under UK law. It is protected as a geographical indication in Iceland, Montenegro, Norway and Serbia. The state of Wisconsin produces the most cheddar cheese in the United States; other centres of production include California, Idaho, New York, Vermont, Oregon, Texas, and Oklahoma. It is sold in several varieties, namely mild, medium, sharp, extra sharp, New York style, white, and Vermont. New York–style cheddar is particularly sharp/acidic, but tends to be somewhat softer than the milder-tasting varieties. Cheddar that does not contain annatto is frequently labelled "white cheddar" or "Vermont cheddar" (regardless of whether it was actually produced there). Vermont's three creameries produce cheddar cheeses – Cabot Creamery, which produces the 16-month-old "Private Stock Cheddar"; the Grafton Village Cheese Company; and Shelburne Farms. Some processed cheeses or "cheese foods" are called "cheddar flavoured". Examples include Easy Cheese, a cheese-food packaged in a pressurised spray can; also, as packs of square, sliced, individually-wrapped "process cheese", which is sometimes also pasteurised. Cheddar is one of several products used by the United States Department of Agriculture to track the status of America's overall dairy industry; reports are issued weekly detailing prices and production quantities. U.S. President Andrew Jackson once held an open house party at the White House at which he served a 1,400 lb (640 kg) block of cheddar. The White House is said to have smelled of cheese for weeks. A cheese of 7,000 lb (3,200 kg) was produced in Ingersoll, Ontario, in 1866 and exhibited in New York and Britain; it was described in the poem "Ode on the Mammoth Cheese Weighing over 7,000 Pounds" by Canadian poet James McIntyre. In 1893, farmers from the town of Perth, Ontario, produced the "mammoth cheese", which weighed 22,000 lb (10,000 kg) for the Chicago World's Fair. It was planned to be exhibited at the Canadian display, but the mammoth cheese fell through the floor and was placed on a reinforced concrete floor in the Agricultural Building. It received the most journalistic attention at the fair and was awarded the bronze medal. A larger, Wisconsin cheese of 34,591 lb (15,690 kg) was made for the 1964 New York World's Fair. A cheese this size would use the equivalent of the daily milk production of 16,000 cows. Oregon members of the Federation of American Cheese-makers created the largest cheddar in 1989. The cheese weighed 56,850 lb (25,790 kg). In 2012, Wisconsin cheese shop owner Edward Zahn discovered and sold a batch of unintentionally aged cheddar up to 40 years old, possibly "the oldest collection of cheese ever assembled and sold to the public". The old cheese has extensive crystallization on the outside and is "creamier and overwhelmingly sharp" on the inside.	[ { "paragraph_id": 0, "text": "Cheddar cheese (or simply cheddar) is a natural cheese that is relatively hard, off-white (or orange if colourings such as annatto are added), and sometimes sharp-tasting. Cheddar originates from the English village of Cheddar in Somerset.", "title": "" }, { "paragraph_id": 1, "text": "Cheddar cheese is produced all over the world, and cheddar cheese has no protected designation of origin either in the United Kingdom or the European Union. In 2007, the protected designation of origin name \"West Country Farmhouse Cheddar\" was registered in the EU and (after Brexit) the UK, defined as cheddar produced from local milk within Somerset, Dorset, Devon and Cornwall and manufactured using traditional methods. Protected Geographical Indication (PGI) was registered for Orkney Scottish Island Cheddar in 2013 in the EU, which also applies under UK law. Globally, the style and quality of cheeses labelled as cheddar may vary greatly, with some processed cheeses being packaged as \"cheddar\". Furthermore, certain cheeses that are similar in taste and appearance to Red Leicester are sometimes marketed as \"red cheddar\".", "title": "" }, { "paragraph_id": 2, "text": "Cheddar is the most popular cheese in the UK, accounting for 51% of the country's £1.9 billion annual cheese market. It is the second-most popular cheese in the US behind mozzarella, with an average annual consumption of 10 lb (4.5 kg) per capita. The US produced approximately 3,000,000,000 lb (1,300,000 long tons; 1,400,000 tonnes) of cheddar cheese in 2014, and the UK produced 258,000 long tons (262,000 tonnes) in 2008.", "title": "" }, { "paragraph_id": 3, "text": "Cheddar cheese originates from the village of Cheddar in Somerset, southwest England. Cheddar Gorge on the edge of the village contains a number of caves, which provided the ideal humidity and steady temperature for maturing the cheese. Cheddar traditionally had to be made within 30 mi (48 km) of Wells Cathedral.", "title": "History" }, { "paragraph_id": 4, "text": "Nineteenth-century Somerset dairyman Joseph Harding was central to the modernisation and standardisation of cheddar. For his technical innovations, promotion of dairy hygiene, and volunteer dissemination of modern cheese-making techniques, Harding has been dubbed \"the father of cheddar\". Harding introduced new equipment to the process of cheese-making, including his \"revolving breaker\" for curd cutting; the revolving breaker saved much manual effort in the cheese-making process. The \"Joseph Harding method\" was the first modern system for cheddar production based upon scientific principles. Harding stated that cheddar cheese is \"not made in the field, nor in the byre, nor even in the cow, it is made in the dairy\". Together, Joseph Harding and his wife were behind the introduction of the cheese into Scotland and North America, while his sons Henry and William Harding were responsible for introducing cheddar cheese production to Australia and facilitating the establishment of the cheese industry in New Zealand, respectively.", "title": "History" }, { "paragraph_id": 5, "text": "During the Second World War and for nearly a decade thereafter, most of the milk in Britain was used to make a single kind of cheese nicknamed \"government cheddar\" as part of the war economy and rationing. As a result, almost all other cheese production in the country was wiped out. Before the First World War, more than 3,500 cheese producers were in Britain; fewer than 100 remained after the Second World War.", "title": "History" }, { "paragraph_id": 6, "text": "According to a United States Department of Agriculture researcher, cheddar is the world's most popular cheese and is the most studied type of cheese in scientific publications.", "title": "History" }, { "paragraph_id": 7, "text": "During the manufacture of cheddar, the curds and whey are separated using rennet, an enzyme complex normally produced from the stomachs of newborn calves (in vegetarian or kosher cheeses, bacterial, yeast or mould-derived chymosin is used).", "title": "Process" }, { "paragraph_id": 8, "text": "\"Cheddaring\" refers to an additional step in the production of cheddar cheese where, after heating, the curd is kneaded with salt, cut into cubes to drain the whey, and then stacked and turned. Strong, extra-mature cheddar, sometimes called vintage, needs to be matured for 15 months or more. The cheese is kept at a constant temperature, often requiring special facilities. As with other hard cheese varieties produced worldwide, caves provide an ideal environment for maturing cheese; still, today, some cheddar is matured in the caves at Wookey Hole and Cheddar Gorge. Additionally, some versions of cheddar are smoked.", "title": "Process" }, { "paragraph_id": 9, "text": "The ideal quality of the original Somerset cheddar was described by Joseph Harding in 1864 as \"close and firm in texture, yet mellow in character or quality; it is rich with a tendency to melt in the mouth, the flavour full and fine, approaching to that of a hazelnut\".", "title": "Character" }, { "paragraph_id": 10, "text": "Cheddar made in the classical way tends to have a sharp, pungent flavour, often slightly earthy. The \"sharpness\" of cheddar is associated with the levels of bitter peptides in the cheese. This bitterness has been found to be significant to the overall perception of the aged cheddar flavour. The texture is firm, with farmhouse traditional cheddar being slightly crumbly; it should also, if mature, contain large cheese crystals consisting of calcium lactate – often precipitated when matured for times longer than six months.", "title": "Character" }, { "paragraph_id": 11, "text": "Cheddar can be a deep to pale yellow (off-white) colour, or a yellow-orange colour when certain plant extracts are added, such as beet juice. One commonly used spice is annatto, extracted from seeds of the tropical achiote tree. Originally added to simulate the colour of high-quality milk from grass-fed Jersey and Guernsey cows, annatto may also impart a sweet, nutty flavour. The largest producer of cheddar cheese in the United States, Kraft, uses a combination of annatto and oleoresin paprika, an extract of the lipophilic (oily) portion of paprika.", "title": "Character" }, { "paragraph_id": 12, "text": "Cheddar was sometimes (and still can be found) packaged in black wax, but was more commonly packaged in larded cloth, which was impermeable to contaminants, but still allowed the cheese to \"breathe\".", "title": "Character" }, { "paragraph_id": 13, "text": "The Slow Food Movement has created a cheddar presidium, arguing that only three cheeses should be called \"original cheddar\". Their specifications, which go further than the \"West Country Farmhouse Cheddar\" PDO, require that cheddar be made in Somerset and with traditional methods, such as using raw milk, traditional animal rennet, and a cloth wrapping.", "title": "Character" }, { "paragraph_id": 14, "text": "The \"cheddar cheese\" name is used internationally; its name does not have a protected designation of origin, but the use of the name \"West Country Farmhouse Cheddar\" does. In addition to the United Kingdom, cheddar is also made in Australia, Argentina, Belgium, Canada, Germany, Ireland, the Netherlands, New Zealand, South Africa, Sweden, Finland, Uruguay and the United States. Cheddars can be either industrial or artisan cheeses. The flavour, colour, and quality of industrial cheese varies significantly, and food packaging will usually indicate a strength, such as mild, medium, strong, tasty, sharp, extra sharp, mature, old, or vintage; this may indicate the maturation period, or food additives used to enhance the flavour. Artisan varieties develop strong and diverse flavours over time.", "title": "International production" }, { "paragraph_id": 15, "text": "As of 2013, cheddar accounts for over 55% of the Australian cheese market, with average annual consumption around 7.5 kg (17 lb) per person. Cheddar is so commonly found that the name is rarely used: instead, cheddar is sold by strength alone as e.g. \"mild\", \"tasty\" or \"sharp\".", "title": "International production" }, { "paragraph_id": 16, "text": "Following a wheat midge outbreak in Canada in the mid-19th century, farmers in Ontario began to convert to dairy farming in large numbers, and cheddar cheese became their main exportable product, even being exported to England. By the turn of the 20th century, 1,242 cheddar factories were in Ontario, and cheddar had become Canada's second-largest export after timber. Cheddar exports totalled 234,000,000 lb (106,000,000 kg) in 1904, but by 2012, Canada was a net importer of cheese. James L. Kraft grew up on a dairy farm in Ontario, before moving to Chicago. According to the writer Sarah Champman, \"Although we cannot wholly lay the decline of cheese craft in Canada at the feet of James Lewis Kraft, it did correspond with the rise of Kraft’s processed cheese empire.\" Most Canadian cheddar is produced in the provinces of Québec (40.8%) and Ontario (36%), though other provinces produce some and some smaller artisanal producers exist. The annual production is 120,000 tons. It is aged a minimum of three months, but much of it is held for much longer, up to 10 years.", "title": "International production" }, { "paragraph_id": 17, "text": "Canadian cheddar cheese soup is a featured dish at the Canada pavilion at Epcot, in Walt Disney World.", "title": "International production" }, { "paragraph_id": 18, "text": "Percentage of milk fat must be labelled by the words milk fat or abbreviations B.F. or M.F.", "title": "International production" }, { "paragraph_id": 19, "text": "Most of the cheddar produced in New Zealand is factory-made, although some are handmade by artisan cheesemakers. Factory-made cheddar is generally sold relatively young within New Zealand, but the Anchor dairy company ships New Zealand cheddars to the UK, where the blocks mature for another year or so.", "title": "International production" }, { "paragraph_id": 20, "text": "Only one producer of the cheese is now based in the village of Cheddar, the Cheddar Gorge Cheese Co. The name \"cheddar\" is not protected under European Union or UK law, though the name \"West Country Farmhouse Cheddar\" has an EU and (following Brexit) a UK protected designation of origin (PDO) registration, and may only be produced in Somerset, Devon, Dorset and Cornwall, using milk sourced from those counties. Cheddar is usually sold as mild, medium, mature, extra mature or vintage. Cheddar produced in Orkney is registered as an EU protected geographical indication under the name \"Orkney Scottish Island Cheddar\". This protection highlights the use of traditional methods, passed down through generations since 1946 and its uniqueness in comparison to other cheddar cheeses. \"West Country Farmhouse Cheddar\" is protected outside the UK and the EU as a Geographical Indication also in China, Georgia, Iceland, Japan, Moldova, Montenegro, Norway, Serbia, Switzerland and Ukraine.", "title": "International production" }, { "paragraph_id": 21, "text": "Furthermore, a Protected Geographical Indication (PGI) was registered for Orkney Scottish Island Cheddar in 2013 in the EU, which also applies under UK law. It is protected as a geographical indication in Iceland, Montenegro, Norway and Serbia.", "title": "International production" }, { "paragraph_id": 22, "text": "The state of Wisconsin produces the most cheddar cheese in the United States; other centres of production include California, Idaho, New York, Vermont, Oregon, Texas, and Oklahoma. It is sold in several varieties, namely mild, medium, sharp, extra sharp, New York style, white, and Vermont. New York–style cheddar is particularly sharp/acidic, but tends to be somewhat softer than the milder-tasting varieties. Cheddar that does not contain annatto is frequently labelled \"white cheddar\" or \"Vermont cheddar\" (regardless of whether it was actually produced there). Vermont's three creameries produce cheddar cheeses – Cabot Creamery, which produces the 16-month-old \"Private Stock Cheddar\"; the Grafton Village Cheese Company; and Shelburne Farms.", "title": "International production" }, { "paragraph_id": 23, "text": "Some processed cheeses or \"cheese foods\" are called \"cheddar flavoured\". Examples include Easy Cheese, a cheese-food packaged in a pressurised spray can; also, as packs of square, sliced, individually-wrapped \"process cheese\", which is sometimes also pasteurised.", "title": "International production" }, { "paragraph_id": 24, "text": "Cheddar is one of several products used by the United States Department of Agriculture to track the status of America's overall dairy industry; reports are issued weekly detailing prices and production quantities.", "title": "International production" }, { "paragraph_id": 25, "text": "U.S. President Andrew Jackson once held an open house party at the White House at which he served a 1,400 lb (640 kg) block of cheddar. The White House is said to have smelled of cheese for weeks.", "title": "Records" }, { "paragraph_id": 26, "text": "A cheese of 7,000 lb (3,200 kg) was produced in Ingersoll, Ontario, in 1866 and exhibited in New York and Britain; it was described in the poem \"Ode on the Mammoth Cheese Weighing over 7,000 Pounds\" by Canadian poet James McIntyre.", "title": "Records" }, { "paragraph_id": 27, "text": "In 1893, farmers from the town of Perth, Ontario, produced the \"mammoth cheese\", which weighed 22,000 lb (10,000 kg) for the Chicago World's Fair. It was planned to be exhibited at the Canadian display, but the mammoth cheese fell through the floor and was placed on a reinforced concrete floor in the Agricultural Building. It received the most journalistic attention at the fair and was awarded the bronze medal. A larger, Wisconsin cheese of 34,591 lb (15,690 kg) was made for the 1964 New York World's Fair. A cheese this size would use the equivalent of the daily milk production of 16,000 cows.", "title": "Records" }, { "paragraph_id": 28, "text": "Oregon members of the Federation of American Cheese-makers created the largest cheddar in 1989. The cheese weighed 56,850 lb (25,790 kg).", "title": "Records" }, { "paragraph_id": 29, "text": "In 2012, Wisconsin cheese shop owner Edward Zahn discovered and sold a batch of unintentionally aged cheddar up to 40 years old, possibly \"the oldest collection of cheese ever assembled and sold to the public\". The old cheese has extensive crystallization on the outside and is \"creamier and overwhelmingly sharp\" on the inside.", "title": "Records" } ]	Cheddar cheese is a natural cheese that is relatively hard, off-white, and sometimes sharp-tasting. Cheddar originates from the English village of Cheddar in Somerset. Cheddar cheese is produced all over the world, and cheddar cheese has no protected designation of origin either in the United Kingdom or the European Union. In 2007, the protected designation of origin name "West Country Farmhouse Cheddar" was registered in the EU and the UK, defined as cheddar produced from local milk within Somerset, Dorset, Devon and Cornwall and manufactured using traditional methods. Protected Geographical Indication (PGI) was registered for Orkney Scottish Island Cheddar in 2013 in the EU, which also applies under UK law. Globally, the style and quality of cheeses labelled as cheddar may vary greatly, with some processed cheeses being packaged as "cheddar". Furthermore, certain cheeses that are similar in taste and appearance to Red Leicester are sometimes marketed as "red cheddar". Cheddar is the most popular cheese in the UK, accounting for 51% of the country's £1.9 billion annual cheese market. It is the second-most popular cheese in the US behind mozzarella, with an average annual consumption of 10 lb (4.5 kg) per capita. The US produced approximately 3,000,000,000 lb of cheddar cheese in 2014, and the UK produced 258,000 long tons in 2008.	2001-10-29T17:55:59Z	2023-12-13T12:51:20Z	[ "Template:Cite news", "Template:Cite web", "Template:Dead link", "Template:Short description", "Template:Use dmy dates", "Template:Convert", "Template:Citation needed", "Template:Clear", "Template:Webarchive", "Template:British cheeses", "Template:English cuisine", "Template:Cite book", "Template:Cbignore", "Template:Cite journal", "Template:Pp-semi-indef", "Template:Infobox cheese", "Template:Main", "Template:Better source needed", "Template:Use British English", "Template:Portal", "Template:Reflist", "Template:Cite thesis", "Template:Cite magazine" ]	https://en.wikipedia.org/wiki/Cheddar_cheese
6,938	Classical order	An order in architecture is a certain assemblage of parts subject to uniform established proportions, regulated by the office that each part has to perform. Coming down to the present from Ancient Greek and Ancient Roman civilization, the architectural orders are the styles of classical architecture, each distinguished by its proportions and characteristic profiles and details, and most readily recognizable by the type of column employed. The three orders of architecture—the Doric, Ionic, and Corinthian—originated in Greece. To these the Romans added, in practice if not in name, the Tuscan, which they made simpler than Doric, and the Composite, which was more ornamental than the Corinthian. The architectural order of a classical building is akin to the mode or key of classical music; the grammar or rhetoric of a written composition. It is established by certain modules like the intervals of music, and it raises certain expectations in an audience attuned to its language. Whereas the orders were essentially structural in Ancient Greek architecture, which made little use of the arch until its late period, in Roman architecture where the arch was often dominant, the orders became increasingly decorative elements except in porticos and similar uses. Columns shrank into half-columns emerging from walls or turned into pilasters. This treatment continued after the conscious and "correct" use of the orders, initially following exclusively Roman models, returned in the Italian Renaissance. Greek Revival architecture, inspired by increasing knowledge of Greek originals, returned to more authentic models, including ones from relatively early periods. Each style has distinctive capitals at the top of columns and horizontal entablatures which it supports, while the rest of the building does not in itself vary between the orders. The column shaft and base also varies with the order, and is sometimes articulated with vertical concave grooves known as fluting. The shaft is wider at the bottom than at the top, because its entasis, beginning a third of the way up, imperceptibly makes the column slightly more slender at the top, although some Doric columns, especially early Greek ones, are visibly "flared", with straight profiles that narrow going up the shaft. The capital rests on the shaft. It has a load-bearing function, which concentrates the weight of the entablature on the supportive column, but it primarily serves an aesthetic purpose. The necking is the continuation of the shaft, but is visually separated by one or many grooves. The echinus lies atop the necking. It is a circular block that bulges outwards towards the top to support the abacus, which is a square or shaped block that in turn supports the entablature. The entablature consists of three horizontal layers, all of which are visually separated from each other using moldings or bands. In Roman and post-Renaissance work, the entablature may be carried from column to column in the form of an arch that springs from the column that bears its weight, retaining its divisions and sculptural enrichment, if any. There are names for all the many parts of the orders. The heights of columns are calculated in terms of a ratio between the diameter of the shaft at its base and the height of the column. A Doric column can be described as seven diameters high, an Ionic column as eight diameters high, and a Corinthian column nine diameters high, although the actual ratios used vary considerably in both ancient and revived examples, but still keeping to the trend of increasing slimness between the orders. Sometimes this is phrased as "lower diameters high", to establish which part of the shaft has been measured. There are three distinct orders in Ancient Greek architecture: Doric, Ionic, and Corinthian. These three were adopted by the Romans, who modified their capitals. The Roman adoption of the Greek orders took place in the 1st century BC. The three ancient Greek orders have since been consistently used in European Neoclassical architecture. Sometimes the Doric order is considered the earliest order, but there is no evidence to support this. Rather, the Doric and Ionic orders seem to have appeared at around the same time, the Ionic in eastern Greece and the Doric in the west and mainland. Both the Doric and the Ionic order appear to have originated in wood. The Temple of Hera in Olympia is the oldest well-preserved temple of Doric architecture. It was built just after 600 BC. The Doric order later spread across Greece and into Sicily, where it was the chief order for monumental architecture for 800 years. Early Greeks were no doubt aware of the use of stone columns with bases and capitals in ancient Egyptian architecture, and that of other Near Eastern cultures, although there they were mostly used in interiors, rather than as a dominant feature of all or part of exteriors, in the Greek style. The Doric order originated on the mainland and western Greece. It is the simplest of the orders, characterized by short, organized, heavy columns with plain, round capitals (tops) and no base. With a height that is only four to eight times its diameter, the columns are the most squat of all orders. The shaft of the Doric order is channeled with 20 flutes. The capital consists of a necking or annulet, which is a simple ring. The echinus is convex, or circular cushion like stone, and the abacus is a square slab of stone. Above the capital is a square abacus connecting the capital to the entablature. The entablature is divided into three horizontal registers, the lower part of which is either smooth or divided by horizontal lines. The upper half is distinctive for the Doric order. The frieze of the Doric entablature is divided into triglyphs and metopes. A triglyph is a unit consisting of three vertical bands which are separated by grooves. Metopes are the plain or carved reliefs between two triglyphs. The Greek forms of the Doric order come without an individual base. They instead are placed directly on the stylobate. Later forms, however, came with the conventional base consisting of a plinth and a torus. The Roman versions of the Doric order have smaller proportions. As a result, they appear lighter than the Greek orders. The Ionic order came from eastern Greece, where its origins are entwined with the similar but little known Aeolic order. It is distinguished by slender, fluted pillars with a large base and two opposed volutes (also called "scrolls") in the echinus of the capital. The echinus itself is decorated with an egg-and-dart motif. The Ionic shaft comes with four more flutes than the Doric counterpart (totalling 24). The Ionic base has two convex moldings called tori, which are separated by a scotia. The Ionic order is also marked by an entasis, a curved tapering in the column shaft. A column of the Ionic order is nine times more tall than its lower diameter. The shaft itself is eight diameters high. The architrave of the entablature commonly consists of three stepped bands (fasciae). The frieze comes without the Doric triglyph and metope. The frieze sometimes comes with a continuous ornament such as carved figures instead. The Corinthian order is the most elaborated of the Greek orders, characterized by a slender fluted column having an ornate capital decorated with two rows of acanthus leaves and four scrolls. The shaft of the Corinthian order has 24 flutes. The column is commonly ten diameters high. The Roman writer Vitruvius credited the invention of the Corinthian order to Callimachus, a Greek sculptor of the 5th century BC. The oldest known building built according to this order is the Choragic Monument of Lysicrates in Athens, constructed from 335 to 334 BC. The Corinthian order was raised to rank by the writings of Vitruvius in the 1st century BC. The Romans adapted all the Greek orders and also developed two orders of their own, basically modifications of Greek orders. However, it was not until the Renaissance that these were named and formalized as the Tuscan and Composite, respectively the plainest and most ornate of the orders. The Romans also invented the Superposed order. A superposed order is when successive stories of a building have different orders. The heaviest orders were at the bottom, whilst the lightest came at the top. This means that the Doric order was the order of the ground floor, the Ionic order was used for the middle story, while the Corinthian or the Composite order was used for the top story. The Giant order was invented by architects in the Renaissance. The Giant order is characterized by columns that extend the height of two or more stories. The Tuscan order has a very plain design, with a plain shaft, and a simple capital, base, and frieze. It is a simplified adaptation of the Greeks' Doric order. The Tuscan order is characterized by an unfluted shaft and a capital that consists of only an echinus and an abacus. In proportions it is similar to the Doric order, but overall it is significantly plainer. The column is normally seven diameters high. Compared to the other orders, the Tuscan order looks the most solid. The Composite order is a mixed order, combining the volutes of the Ionic with the leaves of the Corinthian order. Until the Renaissance it was not ranked as a separate order. Instead it was considered as a late Roman form of the Corinthian order. The column of the Composite order is typically ten diameters high. The Renaissance period saw renewed interest in the literary sources of the ancient cultures of Greece and Rome, and the fertile development of a new architecture based on classical principles. The treatise De architectura by Roman theoretician, architect and engineer Vitruvius, is the only architectural writing that survived from Antiquity. Rediscovered in the 15th century, Vitruvius was instantly hailed as the authority on architecture. However, in his text the word order is not to be found. To describe the four species of columns (he only mentions: Tuscan, Doric, Ionic and Corinthian) he uses, in fact, various words such as: genus (gender), mos (habit, fashion, manner), opera (work). The term order, as well as the idea of redefining the canon started circulating in Rome, at the beginning of the 16th century, probably during the studies of Vitruvius' text conducted and shared by Peruzzi, Raphael, and Sangallo. Ever since, the definition of the canon has been a collective endeavor that involved several generations of European architects, from Renaissance and Baroque periods, basing their theories both on the study of Vitruvius' writings and the observation of Roman ruins (the Greek ruins became available only after Greek Independence, 1821–1823). What was added were rules for the use of the Architectural Orders, and the exact proportions of them in minute detail. Commentary on the appropriateness of the orders for temples devoted to particular deities (Vitruvius I.2.5) were elaborated by Renaissance theorists, with Doric characterized as bold and manly, Ionic as matronly, and Corinthian as maidenly. Following the examples of Vitruvius and the five books of the Regole generali di architettura sopra le cinque maniere de gli edifici by Sebastiano Serlio published from 1537 onwards, Giacomo Barozzi da Vignola produced an architecture rule book that was not only more practical than the previous two treatises, but also was systematically and consistently adopting, for the first time, the term 'order' to define each of the five different species of columns inherited from antiquity. A first publication of the various plates, as separate sheets, appeared in Rome in 1562, with the title: Regola delli cinque ordini d'architettura ("Canon of the Five Orders of Architecture"). As David Watkin has pointed out, Vignola's book "was to have an astonishing publishing history of over 500 editions in 400 years in ten languages, Italian, Dutch, English, Flemish, French, German, Portuguese, Russian, Spanish, Swedish, during which it became perhaps the most influential book of all times". The book consisted simply of an introduction followed by 32 annotated plates, highlighting the proportional system with all the minute details of the Five Architectural Orders. According to Christof Thoenes, the main expert of Renaissance architectural treatises, "in accordance with Vitruvius's example, Vignola chose a "module" equal to a half-diameter which is the base of the system. All the other measurements are expressed in fractions or in multiples of this module. The result is an arithmetical model, and with its help each order, harmoniously proportioned, can easily be adapted to any given height, of a façade or an interior. From this point of view, Vignola's Regola is a remarkable intellectual achievement". In America, The American Builder's Companion, written in the early 19th century by the architect Asher Benjamin, influenced many builders in the eastern states, particularly those who developed what became known as the Federal style. The last American re-interpretation of Vignola's Regola, was edited in 1904 by William Robert Ware. The break from the classical mode came first with the Gothic Revival architecture, then the development of modernism during the 19th century. The Bauhaus promoted pure functionalism, stripped of superfluous ornament, and that has become one of the defining characteristics of modern architecture. There are some exceptions. Postmodernism introduced an ironic use of the orders as a cultural reference, divorced from the strict rules of composition. On the other hand, a number of practitioners such as Quinlan Terry in England, and Michael Dwyer, Richard Sammons, and Duncan Stroik in the United States, continue the classical tradition, and use the classical orders in their work. Several orders, usually based upon the composite order and only varying in the design of the capitals, have been invented under the inspiration of specific occasions, but have not been used again. They are termed "nonce orders" by analogy to nonce words; several examples follow below. These nonce orders all express the “speaking architecture” (architecture parlante) that was taught in the Paris courses, most explicitly by Étienne-Louis Boullée, in which sculptural details of classical architecture could be enlisted to speak symbolically, the better to express the purpose of the structure and enrich its visual meaning with specific appropriateness. This idea was taken up strongly in the training of Beaux-Arts architecture, c. 1875–1915. The Hall of Mirrors in the Palace of Versailles contains pilasters with bronze capitals in the "French order". Designed by Charles Le Brun, the capitals display the national emblems of the Kingdom of France: the royal sun between two Gallic roosters above a fleur-de-lis. Robert Adam's brother James was in Rome in 1762, drawing antiquities under the direction of Clérisseau; he invented a "British order" and published an engraving of it. Its capital the heraldic lion and unicorn take the place of the Composite's volutes, a Byzantine or Romanesque conception, but expressed in terms of neoclassical realism. Adam's ink-and-wash rendering with red highlighting is at the Avery Library, Columbia University. In 1789 George Dance invented an Ammonite order, a variant of Ionic, substituting volutes in the form of fossil ammonites for John Boydell's Shakespeare Gallery in Pall Mall, London. An adaptation of the Corinthian order by William Donthorne that used turnip leaves and mangelwurzel is termed the Agricultural order. Sir Edwin Lutyens, who from 1912 laid out New Delhi as the new seat of government for the British Empire in India, designed a Delhi order having a capital displaying a band of vertical ridges, and with bells hanging at each corner as a replacement for volutes. His design for the new city's central palace, Viceroy's House, now the Presidential residence Rashtrapati Bhavan, was a thorough integration of elements of Indian architecture into a building of classical forms and proportions, and made use of the order throughout. The Delhi Order reappears in some later Lutyens buildings including Campion Hall, Oxford. In the United States Benjamin Latrobe, the architect of the Capitol building in Washington, DC, designed a series of botanical American orders. Most famous is the Corinthian order substituting ears of corn and their husks for the acanthus leaves, which was executed by Giuseppe Franzoni and used in the small domed vestibule of the Senate. Only this vestibule survived the Burning of Washington in 1814, nearly intact. With peace restored, Latrobe designed an American order that substituted tobacco leaves for the acanthus, of which he sent a sketch to Thomas Jefferson in a letter, 5 November 1816. He was encouraged to send a model of it, which remains at Monticello. In the 1830s Alexander Jackson Davis admired it enough to make a drawing of it. In 1809 Latrobe invented a second American order, employing magnolia flowers constrained within the profile of classical mouldings, as his drawing demonstrates. It was intended for "the Upper Columns in the Gallery of the Entrance of the Chamber of the Senate" ("United States Capitol exhibit". Library of Congress. Archived from the original on 2017-07-15. Retrieved 2017-12-29.).	[ { "paragraph_id": 0, "text": "An order in architecture is a certain assemblage of parts subject to uniform established proportions, regulated by the office that each part has to perform. Coming down to the present from Ancient Greek and Ancient Roman civilization, the architectural orders are the styles of classical architecture, each distinguished by its proportions and characteristic profiles and details, and most readily recognizable by the type of column employed. The three orders of architecture—the Doric, Ionic, and Corinthian—originated in Greece. To these the Romans added, in practice if not in name, the Tuscan, which they made simpler than Doric, and the Composite, which was more ornamental than the Corinthian. The architectural order of a classical building is akin to the mode or key of classical music; the grammar or rhetoric of a written composition. It is established by certain modules like the intervals of music, and it raises certain expectations in an audience attuned to its language.", "title": "" }, { "paragraph_id": 1, "text": "Whereas the orders were essentially structural in Ancient Greek architecture, which made little use of the arch until its late period, in Roman architecture where the arch was often dominant, the orders became increasingly decorative elements except in porticos and similar uses. Columns shrank into half-columns emerging from walls or turned into pilasters. This treatment continued after the conscious and \"correct\" use of the orders, initially following exclusively Roman models, returned in the Italian Renaissance. Greek Revival architecture, inspired by increasing knowledge of Greek originals, returned to more authentic models, including ones from relatively early periods.", "title": "" }, { "paragraph_id": 2, "text": "Each style has distinctive capitals at the top of columns and horizontal entablatures which it supports, while the rest of the building does not in itself vary between the orders. The column shaft and base also varies with the order, and is sometimes articulated with vertical concave grooves known as fluting. The shaft is wider at the bottom than at the top, because its entasis, beginning a third of the way up, imperceptibly makes the column slightly more slender at the top, although some Doric columns, especially early Greek ones, are visibly \"flared\", with straight profiles that narrow going up the shaft.", "title": "Elements" }, { "paragraph_id": 3, "text": "The capital rests on the shaft. It has a load-bearing function, which concentrates the weight of the entablature on the supportive column, but it primarily serves an aesthetic purpose. The necking is the continuation of the shaft, but is visually separated by one or many grooves. The echinus lies atop the necking. It is a circular block that bulges outwards towards the top to support the abacus, which is a square or shaped block that in turn supports the entablature. The entablature consists of three horizontal layers, all of which are visually separated from each other using moldings or bands. In Roman and post-Renaissance work, the entablature may be carried from column to column in the form of an arch that springs from the column that bears its weight, retaining its divisions and sculptural enrichment, if any. There are names for all the many parts of the orders.", "title": "Elements" }, { "paragraph_id": 4, "text": "The heights of columns are calculated in terms of a ratio between the diameter of the shaft at its base and the height of the column. A Doric column can be described as seven diameters high, an Ionic column as eight diameters high, and a Corinthian column nine diameters high, although the actual ratios used vary considerably in both ancient and revived examples, but still keeping to the trend of increasing slimness between the orders. Sometimes this is phrased as \"lower diameters high\", to establish which part of the shaft has been measured.", "title": "Measurement" }, { "paragraph_id": 5, "text": "There are three distinct orders in Ancient Greek architecture: Doric, Ionic, and Corinthian. These three were adopted by the Romans, who modified their capitals. The Roman adoption of the Greek orders took place in the 1st century BC. The three ancient Greek orders have since been consistently used in European Neoclassical architecture.", "title": "Greek orders" }, { "paragraph_id": 6, "text": "Sometimes the Doric order is considered the earliest order, but there is no evidence to support this. Rather, the Doric and Ionic orders seem to have appeared at around the same time, the Ionic in eastern Greece and the Doric in the west and mainland.", "title": "Greek orders" }, { "paragraph_id": 7, "text": "Both the Doric and the Ionic order appear to have originated in wood. The Temple of Hera in Olympia is the oldest well-preserved temple of Doric architecture. It was built just after 600 BC. The Doric order later spread across Greece and into Sicily, where it was the chief order for monumental architecture for 800 years. Early Greeks were no doubt aware of the use of stone columns with bases and capitals in ancient Egyptian architecture, and that of other Near Eastern cultures, although there they were mostly used in interiors, rather than as a dominant feature of all or part of exteriors, in the Greek style.", "title": "Greek orders" }, { "paragraph_id": 8, "text": "The Doric order originated on the mainland and western Greece. It is the simplest of the orders, characterized by short, organized, heavy columns with plain, round capitals (tops) and no base. With a height that is only four to eight times its diameter, the columns are the most squat of all orders. The shaft of the Doric order is channeled with 20 flutes. The capital consists of a necking or annulet, which is a simple ring. The echinus is convex, or circular cushion like stone, and the abacus is a square slab of stone.", "title": "Greek orders" }, { "paragraph_id": 9, "text": "Above the capital is a square abacus connecting the capital to the entablature. The entablature is divided into three horizontal registers, the lower part of which is either smooth or divided by horizontal lines. The upper half is distinctive for the Doric order. The frieze of the Doric entablature is divided into triglyphs and metopes. A triglyph is a unit consisting of three vertical bands which are separated by grooves. Metopes are the plain or carved reliefs between two triglyphs.", "title": "Greek orders" }, { "paragraph_id": 10, "text": "The Greek forms of the Doric order come without an individual base. They instead are placed directly on the stylobate. Later forms, however, came with the conventional base consisting of a plinth and a torus. The Roman versions of the Doric order have smaller proportions. As a result, they appear lighter than the Greek orders.", "title": "Greek orders" }, { "paragraph_id": 11, "text": "The Ionic order came from eastern Greece, where its origins are entwined with the similar but little known Aeolic order. It is distinguished by slender, fluted pillars with a large base and two opposed volutes (also called \"scrolls\") in the echinus of the capital. The echinus itself is decorated with an egg-and-dart motif. The Ionic shaft comes with four more flutes than the Doric counterpart (totalling 24). The Ionic base has two convex moldings called tori, which are separated by a scotia.", "title": "Greek orders" }, { "paragraph_id": 12, "text": "The Ionic order is also marked by an entasis, a curved tapering in the column shaft. A column of the Ionic order is nine times more tall than its lower diameter. The shaft itself is eight diameters high. The architrave of the entablature commonly consists of three stepped bands (fasciae). The frieze comes without the Doric triglyph and metope. The frieze sometimes comes with a continuous ornament such as carved figures instead.", "title": "Greek orders" }, { "paragraph_id": 13, "text": "The Corinthian order is the most elaborated of the Greek orders, characterized by a slender fluted column having an ornate capital decorated with two rows of acanthus leaves and four scrolls. The shaft of the Corinthian order has 24 flutes. The column is commonly ten diameters high.", "title": "Greek orders" }, { "paragraph_id": 14, "text": "The Roman writer Vitruvius credited the invention of the Corinthian order to Callimachus, a Greek sculptor of the 5th century BC. The oldest known building built according to this order is the Choragic Monument of Lysicrates in Athens, constructed from 335 to 334 BC. The Corinthian order was raised to rank by the writings of Vitruvius in the 1st century BC.", "title": "Greek orders" }, { "paragraph_id": 15, "text": "The Romans adapted all the Greek orders and also developed two orders of their own, basically modifications of Greek orders. However, it was not until the Renaissance that these were named and formalized as the Tuscan and Composite, respectively the plainest and most ornate of the orders. The Romans also invented the Superposed order. A superposed order is when successive stories of a building have different orders. The heaviest orders were at the bottom, whilst the lightest came at the top. This means that the Doric order was the order of the ground floor, the Ionic order was used for the middle story, while the Corinthian or the Composite order was used for the top story.", "title": "Roman orders" }, { "paragraph_id": 16, "text": "The Giant order was invented by architects in the Renaissance. The Giant order is characterized by columns that extend the height of two or more stories.", "title": "Roman orders" }, { "paragraph_id": 17, "text": "The Tuscan order has a very plain design, with a plain shaft, and a simple capital, base, and frieze. It is a simplified adaptation of the Greeks' Doric order. The Tuscan order is characterized by an unfluted shaft and a capital that consists of only an echinus and an abacus. In proportions it is similar to the Doric order, but overall it is significantly plainer. The column is normally seven diameters high. Compared to the other orders, the Tuscan order looks the most solid.", "title": "Roman orders" }, { "paragraph_id": 18, "text": "The Composite order is a mixed order, combining the volutes of the Ionic with the leaves of the Corinthian order. Until the Renaissance it was not ranked as a separate order. Instead it was considered as a late Roman form of the Corinthian order. The column of the Composite order is typically ten diameters high.", "title": "Roman orders" }, { "paragraph_id": 19, "text": "The Renaissance period saw renewed interest in the literary sources of the ancient cultures of Greece and Rome, and the fertile development of a new architecture based on classical principles. The treatise De architectura by Roman theoretician, architect and engineer Vitruvius, is the only architectural writing that survived from Antiquity. Rediscovered in the 15th century, Vitruvius was instantly hailed as the authority on architecture. However, in his text the word order is not to be found. To describe the four species of columns (he only mentions: Tuscan, Doric, Ionic and Corinthian) he uses, in fact, various words such as: genus (gender), mos (habit, fashion, manner), opera (work).", "title": "Historical development" }, { "paragraph_id": 20, "text": "The term order, as well as the idea of redefining the canon started circulating in Rome, at the beginning of the 16th century, probably during the studies of Vitruvius' text conducted and shared by Peruzzi, Raphael, and Sangallo. Ever since, the definition of the canon has been a collective endeavor that involved several generations of European architects, from Renaissance and Baroque periods, basing their theories both on the study of Vitruvius' writings and the observation of Roman ruins (the Greek ruins became available only after Greek Independence, 1821–1823). What was added were rules for the use of the Architectural Orders, and the exact proportions of them in minute detail. Commentary on the appropriateness of the orders for temples devoted to particular deities (Vitruvius I.2.5) were elaborated by Renaissance theorists, with Doric characterized as bold and manly, Ionic as matronly, and Corinthian as maidenly.", "title": "Historical development" }, { "paragraph_id": 21, "text": "Following the examples of Vitruvius and the five books of the Regole generali di architettura sopra le cinque maniere de gli edifici by Sebastiano Serlio published from 1537 onwards, Giacomo Barozzi da Vignola produced an architecture rule book that was not only more practical than the previous two treatises, but also was systematically and consistently adopting, for the first time, the term 'order' to define each of the five different species of columns inherited from antiquity. A first publication of the various plates, as separate sheets, appeared in Rome in 1562, with the title: Regola delli cinque ordini d'architettura (\"Canon of the Five Orders of Architecture\"). As David Watkin has pointed out, Vignola's book \"was to have an astonishing publishing history of over 500 editions in 400 years in ten languages, Italian, Dutch, English, Flemish, French, German, Portuguese, Russian, Spanish, Swedish, during which it became perhaps the most influential book of all times\".", "title": "Vignola defining the concept of \"order\"" }, { "paragraph_id": 22, "text": "The book consisted simply of an introduction followed by 32 annotated plates, highlighting the proportional system with all the minute details of the Five Architectural Orders. According to Christof Thoenes, the main expert of Renaissance architectural treatises, \"in accordance with Vitruvius's example, Vignola chose a \"module\" equal to a half-diameter which is the base of the system. All the other measurements are expressed in fractions or in multiples of this module. The result is an arithmetical model, and with its help each order, harmoniously proportioned, can easily be adapted to any given height, of a façade or an interior. From this point of view, Vignola's Regola is a remarkable intellectual achievement\".", "title": "Vignola defining the concept of \"order\"" }, { "paragraph_id": 23, "text": "In America, The American Builder's Companion, written in the early 19th century by the architect Asher Benjamin, influenced many builders in the eastern states, particularly those who developed what became known as the Federal style. The last American re-interpretation of Vignola's Regola, was edited in 1904 by William Robert Ware.", "title": "Vignola defining the concept of \"order\"" }, { "paragraph_id": 24, "text": "The break from the classical mode came first with the Gothic Revival architecture, then the development of modernism during the 19th century. The Bauhaus promoted pure functionalism, stripped of superfluous ornament, and that has become one of the defining characteristics of modern architecture. There are some exceptions. Postmodernism introduced an ironic use of the orders as a cultural reference, divorced from the strict rules of composition. On the other hand, a number of practitioners such as Quinlan Terry in England, and Michael Dwyer, Richard Sammons, and Duncan Stroik in the United States, continue the classical tradition, and use the classical orders in their work.", "title": "Vignola defining the concept of \"order\"" }, { "paragraph_id": 25, "text": "Several orders, usually based upon the composite order and only varying in the design of the capitals, have been invented under the inspiration of specific occasions, but have not been used again. They are termed \"nonce orders\" by analogy to nonce words; several examples follow below.", "title": "Nonce orders" }, { "paragraph_id": 26, "text": "These nonce orders all express the “speaking architecture” (architecture parlante) that was taught in the Paris courses, most explicitly by Étienne-Louis Boullée, in which sculptural details of classical architecture could be enlisted to speak symbolically, the better to express the purpose of the structure and enrich its visual meaning with specific appropriateness. This idea was taken up strongly in the training of Beaux-Arts architecture, c. 1875–1915.", "title": "Nonce orders" }, { "paragraph_id": 27, "text": "The Hall of Mirrors in the Palace of Versailles contains pilasters with bronze capitals in the \"French order\". Designed by Charles Le Brun, the capitals display the national emblems of the Kingdom of France: the royal sun between two Gallic roosters above a fleur-de-lis.", "title": "Nonce orders" }, { "paragraph_id": 28, "text": "Robert Adam's brother James was in Rome in 1762, drawing antiquities under the direction of Clérisseau; he invented a \"British order\" and published an engraving of it. Its capital the heraldic lion and unicorn take the place of the Composite's volutes, a Byzantine or Romanesque conception, but expressed in terms of neoclassical realism. Adam's ink-and-wash rendering with red highlighting is at the Avery Library, Columbia University.", "title": "Nonce orders" }, { "paragraph_id": 29, "text": "In 1789 George Dance invented an Ammonite order, a variant of Ionic, substituting volutes in the form of fossil ammonites for John Boydell's Shakespeare Gallery in Pall Mall, London.", "title": "Nonce orders" }, { "paragraph_id": 30, "text": "An adaptation of the Corinthian order by William Donthorne that used turnip leaves and mangelwurzel is termed the Agricultural order.", "title": "Nonce orders" }, { "paragraph_id": 31, "text": "Sir Edwin Lutyens, who from 1912 laid out New Delhi as the new seat of government for the British Empire in India, designed a Delhi order having a capital displaying a band of vertical ridges, and with bells hanging at each corner as a replacement for volutes. His design for the new city's central palace, Viceroy's House, now the Presidential residence Rashtrapati Bhavan, was a thorough integration of elements of Indian architecture into a building of classical forms and proportions, and made use of the order throughout. The Delhi Order reappears in some later Lutyens buildings including Campion Hall, Oxford.", "title": "Nonce orders" }, { "paragraph_id": 32, "text": "In the United States Benjamin Latrobe, the architect of the Capitol building in Washington, DC, designed a series of botanical American orders. Most famous is the Corinthian order substituting ears of corn and their husks for the acanthus leaves, which was executed by Giuseppe Franzoni and used in the small domed vestibule of the Senate. Only this vestibule survived the Burning of Washington in 1814, nearly intact.", "title": "Nonce orders" }, { "paragraph_id": 33, "text": "With peace restored, Latrobe designed an American order that substituted tobacco leaves for the acanthus, of which he sent a sketch to Thomas Jefferson in a letter, 5 November 1816. He was encouraged to send a model of it, which remains at Monticello. In the 1830s Alexander Jackson Davis admired it enough to make a drawing of it. In 1809 Latrobe invented a second American order, employing magnolia flowers constrained within the profile of classical mouldings, as his drawing demonstrates. It was intended for \"the Upper Columns in the Gallery of the Entrance of the Chamber of the Senate\" (\"United States Capitol exhibit\". Library of Congress. Archived from the original on 2017-07-15. Retrieved 2017-12-29.).", "title": "Nonce orders" } ]	An order in architecture is a certain assemblage of parts subject to uniform established proportions, regulated by the office that each part has to perform. Coming down to the present from Ancient Greek and Ancient Roman civilization, the architectural orders are the styles of classical architecture, each distinguished by its proportions and characteristic profiles and details, and most readily recognizable by the type of column employed. The three orders of architecture—the Doric, Ionic, and Corinthian—originated in Greece. To these the Romans added, in practice if not in name, the Tuscan, which they made simpler than Doric, and the Composite, which was more ornamental than the Corinthian. The architectural order of a classical building is akin to the mode or key of classical music; the grammar or rhetoric of a written composition. It is established by certain modules like the intervals of music, and it raises certain expectations in an audience attuned to its language. Whereas the orders were essentially structural in Ancient Greek architecture, which made little use of the arch until its late period, in Roman architecture where the arch was often dominant, the orders became increasingly decorative elements except in porticos and similar uses. Columns shrank into half-columns emerging from walls or turned into pilasters. This treatment continued after the conscious and "correct" use of the orders, initially following exclusively Roman models, returned in the Italian Renaissance. Greek Revival architecture, inspired by increasing knowledge of Greek originals, returned to more authentic models, including ones from relatively early periods.	2001-10-29T17:17:36Z	2023-12-08T11:31:34Z	[ "Template:Short description", "Template:Citation needed", "Template:External media", "Template:Cite web", "Template:Circa", "Template:ISBN", "Template:Library resources box", "Template:Clear left", "Template:Classical orders", "Template:Authority control", "Template:Cite book", "Template:About", "Template:Main", "Template:Lang", "Template:Clear", "Template:Reflist" ]	https://en.wikipedia.org/wiki/Classical_order
6,941	Colin Kapp	Derek Ivor Colin Kapp (3 April 1928 – 3 August 2007), Known as Colin Kapp, was a British science fiction author best known for his stories about the Unorthodox Engineers. As an electronic engineer, he began his career with Mullard Electronics then specialised in electroplating techniques, eventually becoming a freelance consultant engineer. He was born in Southwark, south London, 3 April 1928 to John L. F. Kapp and Annie M.A. (née Towner). Collected in The Unorthodox Engineers (1979)	[ { "paragraph_id": 0, "text": "Derek Ivor Colin Kapp (3 April 1928 – 3 August 2007), Known as Colin Kapp, was a British science fiction author best known for his stories about the Unorthodox Engineers.", "title": "" }, { "paragraph_id": 1, "text": "As an electronic engineer, he began his career with Mullard Electronics then specialised in electroplating techniques, eventually becoming a freelance consultant engineer.", "title": "" }, { "paragraph_id": 2, "text": "He was born in Southwark, south London, 3 April 1928 to John L. F. Kapp and Annie M.A. (née Towner).", "title": "" }, { "paragraph_id": 3, "text": "Collected in The Unorthodox Engineers (1979)", "title": "Works" }, { "paragraph_id": 4, "text": "", "title": "External links" } ]	Derek Ivor Colin Kapp, Known as Colin Kapp, was a British science fiction author best known for his stories about the Unorthodox Engineers. As an electronic engineer, he began his career with Mullard Electronics then specialised in electroplating techniques, eventually becoming a freelance consultant engineer. He was born in Southwark, south London, 3 April 1928 to John L. F. Kapp and Annie M.A..	2001-10-29T22:18:13Z	2023-07-30T18:32:22Z	[ "Template:Main", "Template:Reflist", "Template:Isfdb name", "Template:Use British English", "Template:Use dmy dates", "Template:Authority control", "Template:UK-novelist-stub", "Template:Short description", "Template:Webarchive" ]	https://en.wikipedia.org/wiki/Colin_Kapp
6,942	Catherine of Aragon	Catherine of Aragon (also spelt as Katherine, Spanish: Catalina; 16 December 1485 – 7 January 1536) was Queen of England as the first wife of King Henry VIII from their marriage on 11 June 1509 until their annulment on 23 May 1533. Born in Spain, she was Princess of Wales while married to Henry's elder brother, Arthur, Prince of Wales, for a short period before his death. The daughter of Isabella I of Castile and Ferdinand II of Aragon, Catherine was three years old when she was betrothed to Arthur, heir apparent to the English throne. They married in 1501, but Arthur died five months later. Catherine spent years in limbo, and during this time, she held the position of ambassador of the Aragonese crown to England in 1507, the first known female ambassador in European history. She married Henry shortly after his accession in 1509. For six months in 1513, she served as regent of England while Henry was in France. During that time the English defeated a Scottish invasion at the Battle of Flodden, an event in which Catherine played an important part with an emotional speech about courage and patriotism. By 1526, Henry was infatuated with Anne Boleyn and dissatisfied that his marriage to Catherine had produced no surviving sons, leaving their daughter Mary as heir presumptive at a time when there was no established precedent for a woman on the throne. He sought to have their marriage annulled, setting in motion a chain of events that led to England's schism with the Catholic Church. When Pope Clement VII refused to annul the marriage, Henry defied him by assuming supremacy over religious matters in England. In 1533 their marriage was consequently declared invalid and Henry married Anne on the judgement of clergy in England, without reference to the pope. Catherine refused to accept Henry as supreme head of the Church in England and considered herself the king's rightful wife and queen, attracting much popular sympathy. Despite this, Henry acknowledged her only as dowager princess of Wales. After being banished from court by Henry, Catherine lived out the remainder of her life at Kimbolton Castle, dying there in January 1536 of cancer. The English people held Catherine in high esteem, and her death set off tremendous mourning. Her daughter Mary would become the first undisputed English queen regnant in 1553. Catherine commissioned The Education of a Christian Woman by Juan Luis Vives, who dedicated the book, controversial at the time, to the Queen in 1523. Such was Catherine's impression on people that even her adversary Thomas Cromwell said of her, "If not for her sex, she could have defied all the heroes of History." She successfully appealed for the lives of the rebels involved in the Evil May Day, for the sake of their families, and also won widespread admiration by starting an extensive programme for the relief of the poor. Catherine was a patron of Renaissance humanism and a friend of the great scholars Erasmus of Rotterdam and Thomas More. Catherine was born at the Archbishop's Palace of Alcalá de Henares near Madrid, in the early hours of 16 December 1485. She was the youngest surviving child of King Ferdinand II of Aragon and Queen Isabella I of Castile. Catherine was quite short in stature with long red hair, wide blue eyes, a round face, and a fair complexion. She was descended, on her maternal side, from the House of Lancaster, an English royal house; her great-grandmother Catherine of Lancaster, after whom she was named, and her great-great-grandmother Philippa of Lancaster were both daughters of John of Gaunt and granddaughters of Edward III of England. Consequently, she was third cousin of her father-in-law, Henry VII of England, and fourth cousin of her mother-in-law Elizabeth of York. Catherine was educated by a tutor, Alessandro Geraldini, who was a clerk in Holy Orders. She studied arithmetic, canon and civil law, classical literature, genealogy and heraldry, history, philosophy, religion, and theology. She had a strong religious upbringing and developed her Roman Catholic faith that would play a major role in later life. She learned to speak, read and write in Castilian Spanish and Latin, and spoke French and Greek. Erasmus later said that Catherine "loved good literature which she had studied with success since childhood". She had been given lessons in domestic skills, such as cooking, embroidery, lace-making, needlepoint, sewing, spinning, and weaving and was also taught music, dancing, drawing, as well as being carefully educated in good manners and court etiquette. At an early age, Catherine was considered a suitable wife for Arthur, Prince of Wales, heir apparent to the English throne, due to the English ancestry she inherited from her mother. Theoretically, by means of her mother, Catherine had a stronger legitimate claim to the English throne than King Henry VII himself through the first two wives of John of Gaunt, 1st Duke of Lancaster: Blanche of Lancaster and Constance of Castile. In contrast, Henry VII was the descendant of Gaunt's third marriage to Katherine Swynford, whose children were born out of wedlock and only legitimised after the death of Constance and the marriage of John to Katherine. The children of John and Katherine, while legitimised, were barred from inheriting the English throne, a stricture that was ignored in later generations. Because of Henry's descent through illegitimate children barred from succession to the English throne, the Tudor monarchy was not accepted by all European kingdoms. At the time, the House of Trastámara was the most prestigious in Europe, due to the rule of the Catholic Monarchs, so the alliance of Catherine and Arthur validated the House of Tudor in the eyes of European royalty and strengthened the Tudor claim to the English throne via Catherine of Aragon's ancestry. It would have given a male heir an indisputable claim to the throne. The two were married by proxy on 19 May 1499 and corresponded in Latin until Arthur turned fifteen, when it was decided that they were old enough to begin their conjugal life. Catherine was accompanied to England by the following ambassadors: the 3rd Count of Cabra; Alonso de Fonseca, Archbishop of Santiago de Compostela; and Antonio de Rojas Manrique, Bishop of Mallorca. She brought a group of her African attendants with her, including one identified as the trumpeter John Blanke. They are the first Africans recorded to have arrived in London at the time, and were considered luxury servants. They caused a great impression about the princess and the power of her family. Her Spanish retinue, including Francisco Felipe, was supervised by her duenna, Elvira Manuel. At first it was thought Catherine's ship would arrive at Gravesend. A number of English gentlewomen were appointed to be ready to welcome her on arrival in October 1501. They were to escort Catherine in a flotilla of barges on the Thames to the Tower of London. Then-15-year-old Catherine departed from A Coruña on 17 August 1501 and met Arthur on 4 November at Dogmersfield in Hampshire. Little is known about their first impressions of each other, but Arthur did write to his parents-in-law that he would be "a true and loving husband" and told his parents that he was immensely happy to "behold the face of his lovely bride". The couple had corresponded in Latin, but found that they could not understand each other's spoken conversation, because they had learned different Latin pronunciations. Ten days later, on 14 November 1501, they were married at Old St. Paul's Cathedral. A dowry of 200,000 ducats had been agreed, and half was paid shortly after the marriage. It was noted that Catherine and her Spanish ladies in waiting were dressed in Spanish style at her arrival and at the wedding. Once married, Arthur was sent to Ludlow Castle on the borders of Wales to preside over the Council of Wales and the Marches, as was his duty as Prince of Wales, and his bride accompanied him. A few months later, they both became ill, possibly with the sweating sickness, which was sweeping the area. Arthur died on 2 April 1502; 16-year-old Catherine recovered to find herself a widow. At this point, Henry VII faced the challenge of avoiding the obligation to return her 200,000-ducat dowry, half of which he had not yet received, to her father, as required by her marriage contract should she return home. Following the death of Queen Elizabeth in February 1503, King Henry VII initially considered marrying Catherine himself, but the opposition of her father and potential questions over the legitimacy of the couple's issue ended the idea. To settle the matter, it was agreed that Catherine would marry Henry VII's second son, Henry, Duke of York, who was five years younger than she was. The death of Catherine's mother, however, meant that her "value" in the marriage market decreased. Castile was a much larger kingdom than Aragon, and it was inherited by Catherine's elder sister, Joanna. Ostensibly, the marriage was delayed until Henry was old enough, but Ferdinand II procrastinated so much over payment of the remainder of Catherine's dowry that it became doubtful that the marriage would take place. She lived as a virtual prisoner at Durham House in London. Some of the letters she wrote to her father complaining of her treatment have survived. In one of these letters she tells him that "I choose what I believe, and say nothing. For I am not as simple as I may seem." She had little money and struggled to cope, as she had to support her ladies-in-waiting as well as herself. In 1507 she served as the Spanish ambassador to England, the first female ambassador in European history. While Henry VII and his counsellors expected her to be easily manipulated, Catherine went on to prove them wrong. Marriage to Arthur's brother depended on the Pope granting a dispensation because canon law forbade a man to marry his brother's widow (Lev. 18:16). Catherine testified that her marriage to Arthur was never consummated as, also according to canon law, a marriage was dissoluble unless consummated. Catherine's second wedding took place on 11 June 1509, seven years after Prince Arthur's death. She married Henry VIII, who had only just acceded to the throne, in a private ceremony in the church of the Observant Friars outside Greenwich Palace. She was 23 years of age. On Saturday 23 June 1509, the traditional eve-of-coronation procession to Westminster Abbey was greeted by a large and enthusiastic crowd. As was the custom, the couple spent the night before their coronation at the Tower of London. On Midsummer's Day, Sunday, 24 June 1509, Henry VIII and Catherine were anointed and crowned together by the Archbishop of Canterbury at a lavish ceremony at Westminster Abbey. The coronation was followed by a banquet in Westminster Hall. Many new Knights of the Bath were created in honour of the coronation. In that month that followed, many social occasions presented the new Queen to the English public. She made a fine impression and was well received by the people of England. On 11 June 1513, Henry appointed Catherine Regent in England with the titles "Governor of the Realm and Captain General," while he went to France on a military campaign. When Louis d'Orléans, Duke of Longueville, was captured at Thérouanne, Henry sent him to stay in Catherine's household. She wrote to Wolsey that she and her council would prefer the Duke to stay in the Tower of London as the Scots were "so busy as they now be" and she added her prayers for "God to sende us as good lukke against the Scotts, as the King hath ther." The war with Scotland occupied her subjects, and she was "horrible busy with making standards, banners, and badges" at Richmond Palace. Catherine wrote to towns, including Gloucester, asking them to send muster lists of men able to serve as soldiers. The Scots invaded and on 3 September 1513, she ordered Thomas Lovell to raise an army in the midland counties. Catherine was issued with banners at Richmond on 8 September, and rode north in full armour to address the troops, despite being heavily pregnant at the time. Her fine speech was reported to the historian Peter Martyr d'Anghiera in Valladolid within a fortnight. Although an Italian newsletter said she was 100 miles (160 km) north of London when news of the victory at Battle of Flodden Field reached her, she was near Buckingham. From Woburn Abbey, she sent a letter to Henry along with a piece of the bloodied coat of King James IV of Scotland, who died in the battle, for Henry to use as a banner at the siege of Tournai. Catherine's religious dedication increased as she became older, as did her interest in academics. She continued to broaden her knowledge and provide training for her daughter, Mary. Education among women became fashionable, partly because of Catherine's influence, and she donated large sums of money to several colleges. Henry, however, still considered a male heir essential. The Tudor dynasty was new, and its legitimacy might still be tested. A long civil war (1135–1154) had been fought the last time a woman (Empress Matilda) had inherited the throne. The disasters of civil war were still fresh in living memory from the Wars of the Roses. In 1520, Catherine's nephew, the Holy Roman Emperor Charles V, paid a state visit to England, and she urged Henry to enter an alliance with Charles rather than with France. Immediately after his departure, she accompanied Henry to France on the celebrated visit to Francis I, the Field of the Cloth of Gold. Within two years, war was declared against France and the Emperor was once again welcome in England, where plans were afoot to betroth him to Catherine's daughter Mary. In 1525, Henry VIII became enamoured of Anne Boleyn, a lady-in-waiting to Queen Catherine; Anne was between ten and seventeen years younger than Henry, being born between 1501 and 1507. Henry began pursuing her; Catherine was no longer able to bear children by this time. Henry began to believe that his marriage was cursed and sought confirmation from the Bible, which he interpreted to say that if a man marries his brother's wife, the couple will be childless. Even if her marriage to Arthur had not been consummated (and Catherine would insist to her dying day that she had come to Henry's bed a virgin), Henry's interpretation of that biblical passage meant that their marriage had been wrong in the eyes of God. Whether the pope at the time of Henry and Catherine's marriage had the right to overrule Henry's claimed scriptural impediment would become a hot topic in Henry's campaign to wrest an annulment from the present Pope. It is possible that the idea of annulment had been suggested to Henry much earlier than this, and is highly probable that it was motivated by his desire for a son. Before Henry's father ascended the throne, England was beset by civil warfare over rival claims to the English crown, and Henry may have wanted to avoid a similar uncertainty over the succession. It soon became the one absorbing object of Henry's desires to secure an annulment. Catherine was defiant when it was suggested that she quietly retire to a nunnery, saying: "God never called me to a nunnery. I am the King's true and legitimate wife." He set his hopes upon an appeal to the Holy See, acting independently of Cardinal Thomas Wolsey, whom he told nothing of his plans. William Knight, the King's secretary, was sent to Pope Clement VII to sue for an annulment, on the grounds that the dispensing bull of Pope Julius II was obtained by false pretenses. As the pope was, at that time, the prisoner of Catherine's nephew Emperor Charles V following the Sack of Rome in May 1527, Knight had difficulty in obtaining access to him. In the end, Henry's envoy had to return without accomplishing much. Henry now had no choice but to put this great matter into the hands of Wolsey, who did all he could to secure a decision in Henry's favour. Both the Pope and Martin Luther raised the possibility that Henry have two wives, not to re-introduce polygamy generally, but "to preserve the royal dignity of Catherine and Mary". Wolsey went so far as to convene an ecclesiastical court in England with a representative of the pope presiding, and Henry and Catherine herself in attendance. The pope had no intention of allowing a decision to be reached in England, and his legate was recalled. (How far the pope was influenced by Charles V is difficult to say, but it is clear Henry saw that the pope was unlikely to annul his marriage to the emperor's aunt.) The Pope forbade Henry to marry again before a decision was given in Rome. Wolsey had failed and was dismissed from public office in 1529. Wolsey then began a secret plot to have Anne Boleyn forced into exile and began communicating with the pope to that end. When this was discovered, Henry ordered Wolsey's arrest and, had he not been terminally ill and died in 1530, he might have been executed for treason. A year later, Catherine was banished from court, and her old rooms were given to Anne Boleyn. Catherine wrote in a letter to Charles V in 1531: My tribulations are so great, my life so disturbed by the plans daily invented to further the King's wicked intention, the surprises which the King gives me, with certain persons of his council, are so mortal, and my treatment is what God knows, that it is enough to shorten ten lives, much more mine. When Archbishop of Canterbury William Warham died, the Boleyn family's chaplain, Thomas Cranmer, was appointed to the vacant position. When Henry decided to annul his marriage to Catherine, John Fisher became her most trusted counsellor and one of her chief supporters. He appeared in the legates' court on her behalf, where he shocked people with the directness of his language, and by declaring that, like John the Baptist, he was ready to die on behalf of the indissolubility of marriage. Henry was so enraged by this that he wrote a long Latin address to the legates in answer to Fisher's speech. Fisher's copy of this still exists, with his manuscript annotations in the margin which show how little he feared Henry's anger. The removal of the cause to Rome ended Fisher's role in the matter, but Henry never forgave him. Other people who supported Catherine's case included Thomas More; Henry's own sister Mary Tudor, Queen of France; María de Salinas; Holy Roman Emperor Charles V; Pope Paul III; and Protestant Reformers Martin Luther and William Tyndale. Upon returning to Dover from a meeting with King Francis I of France in Calais, Henry married Anne Boleyn in a secret ceremony. Some sources speculate that Anne was already pregnant at the time (and Henry did not want to risk a son being born illegitimate) but others testify that Anne (who had seen her sister Mary Boleyn taken up as the king's mistress and summarily cast aside) refused to sleep with Henry until they were married. Henry defended the lawfulness of their union by pointing out that Catherine had previously been married. If she and Arthur had consummated their marriage, Henry by canon law had the right to remarry. On 23 May 1533, Cranmer, sitting in judgement at a special court convened at Dunstable Priory to rule on the validity of Henry's marriage to Catherine, declared the marriage unlawful, even though Catherine had testified that she and Arthur had never had physical relations. Five days later, on 28 May 1533, Cranmer ruled that Henry and Anne's marriage was valid. Until the end of her life, Catherine would refer to herself as Henry's only lawful wedded wife and England's only rightful queen, and her servants continued to address her as such. Henry refused her the right to any title but "Dowager Princess of Wales" in recognition of her position as his brother's widow. Catherine went to live at The More Castle, Hertfordshire, late in 1531. After that, she was successively moved to the Royal Palace of Hatfield, Hertfordshire (May to September 1532), Elsyng Palace, Enfield (September 1532 to February 1533), Ampthill Castle, Bedfordshire (February to July 1533) and Buckden Towers, Cambridgeshire (July 1533 to May 1534). She was then finally transferred to Kimbolton Castle, Cambridgeshire where she confined herself to one room, which she left only to attend Mass, dressed only in the hair shirt of the Order of St. Francis, and fasted continuously. While she was permitted to receive occasional visitors, she was forbidden to see her daughter Mary. They were also forbidden to communicate in writing, but sympathisers discreetly conveyed letters between the two. Henry offered both mother and daughter better quarters and permission to see each other if they would acknowledge Anne Boleyn as the new queen; both refused. In late December 1535, sensing her death was near, Catherine made her will, and wrote to her nephew, the Emperor Charles V, asking him to protect her daughter. It has been claimed that she then penned one final letter to Henry: My most dear lord, king and husband, The hour of my death now drawing on, the tender love I owe you forceth me, my case being such, to commend myself to you, and to put you in remembrance with a few words of the health and safeguard of your soul which you ought to prefer before all worldly matters, and before the care and pampering of your body, for the which you have cast me into many calamities and yourself into many troubles. For my part, I pardon you everything, and I wish to devoutly pray God that He will pardon you also. For the rest, I commend unto you our daughter Mary, beseeching you to be a good father unto her, as I have heretofore desired. I entreat you also, on behalf of my maids, to give them marriage portions, which is not much, they being but three. For all my other servants I solicit the wages due them, and a year more, lest they be unprovided for. Lastly, I make this vow, that mine eyes desire you above all things. Katharine the Quene. The authenticity of the letter itself has been questioned, but not Catherine's attitude in its wording, which has been reported with variations in different sources. Catherine died at Kimbolton Castle on 7 January 1536. The following day, news of her death reached the king. At the time there were rumours that she was poisoned, possibly by Gregory di Casale. According to the chronicler Edward Hall, Anne Boleyn wore yellow for the mourning, which has been interpreted in various ways; Polydore Vergil interpreted this to mean that Anne did not mourn. Chapuys reported that it was King Henry who decked himself in yellow, celebrating the news and making a great show of his and Anne's daughter, Elizabeth, to his courtiers. This was seen as distasteful and vulgar by many. Another theory is that the dressing in yellow was out of respect for Catherine as yellow was said to be the Spanish colour of mourning. Certainly, later in the day it is reported that Henry and Anne both individually and privately wept for her death. On the day of Catherine's funeral, Anne Boleyn miscarried a male child. Rumours then circulated that Catherine had been poisoned by Anne or Henry, or both. The rumours were born after the apparent discovery during her embalming that there was a black growth on her heart that might have been caused by poisoning. Modern medical experts are in agreement that her heart's discolouration was due not to poisoning, but to cancer, something which was not understood at the time. Catherine was buried in Peterborough Cathedral with the ceremony due to her position as a Dowager Princess of Wales, and not a queen. Henry did not attend the funeral and forbade Mary to attend. Catherine was a member of the Third Order of Saint Francis and she was punctilious in her religious obligations in the Order, integrating without demur her necessary duties as queen with her personal piety. After the annulment, she was quoted "I would rather be a poor beggar's wife and be sure of heaven, than queen of all the world and stand in doubt thereof by reason of my own consent." The outward celebration of saints and holy relics formed no major part of her personal devotions, which she rather expressed in the Mass, prayer, confession and penance. Privately, however, she was aware of what she identified as the shortcomings of the papacy and church officialdom. Her doubts about church improprieties certainly did not extend so far as to support the allegations of corruption made public by Martin Luther in Wittenberg in 1517, which were soon to have such far-reaching consequences in initiating the Protestant Reformation. In 1523 Alfonso de Villa Sancta, a learned friar of the Observant (reform) branch of the Friars Minor and friend of the king's old advisor Erasmus, dedicated to the queen his book De Liberio Arbitrio adversus Melanchthonem. The book denounced Philip Melanchthon, a supporter of Luther. Acting as her confessor, he was able to nominate her for the title of "Defender of the Faith" for denying Luther's arguments. In her youth, Catherine was described as "the most beautiful creature in the world" and that there was "nothing lacking in her that the most beautiful girl should have". Thomas More and Lord Herbert would reflect later in her lifetime that in regard to her appearance "there were few women who could compete with the Queen [Catherine] in her prime." The controversial book The Education of a Christian Woman by Juan Luis Vives, which claimed women have the right to an education, was dedicated to and commissioned by her. Such was Catherine's impression on people, that even her enemy, Thomas Cromwell, said of her "If not for her sex, she could have defied all the heroes of History." She successfully appealed for the lives of the rebels involved in the Evil May Day for the sake of their families. Furthermore, Catherine won widespread admiration by starting an extensive programme for the relief of the poor. She was also a patron of Renaissance humanism, and a friend of the great scholars Erasmus of Rotterdam and Saint Thomas More. Some saw her as a martyr. In the reign of her daughter Mary I of England, her marriage to Henry VIII was declared "good and valid". Her daughter Queen Mary also had several portraits commissioned of Catherine, and it would not by any means be the last time she was painted. After her death, numerous portraits were painted of her, particularly of her speech at the Legatine Trial, a moment accurately rendered in Shakespeare's play about Henry VIII. Her tomb in Peterborough Cathedral can be seen and there is hardly ever a time when it is not decorated with flowers or pomegranates, her heraldic symbol. It bears the title Katharine Queen of England. In the 20th century, George V's wife, Mary of Teck, had her grave upgraded and there are now banners there denoting Catherine as a Queen of England. Every year at Peterborough Cathedral there is a service in her memory. There are processions, prayers and various events in the Cathedral including processions to Catherine's grave in which candles, pomegranates, flowers and other offerings are placed on her grave. On the service commemorating the 470th anniversary of her death, the Spanish Ambassador to the United Kingdom attended. During the 2010 service a rendition of Catherine of Aragon's speech before the Legatine court was read by Jane Lapotaire. There is a statue of her in her birthplace of Alcalá de Henares, as a young woman holding a book and a rose. Catherine has remained a popular biographical subject to the present day. The American historian Garrett Mattingly was the author of a popular biography Katherine of Aragon in 1942. In 1966, Catherine and her many supporters at court were the subjects of Catherine of Aragon and her Friends, a biography by John E. Paul. In 1967, Mary M. Luke wrote the first book of her Tudor trilogy, Catherine the Queen which portrayed her and the tumultuous era of English history through which she lived. In recent years, the historian Alison Weir covered her life extensively in her biography The Six Wives of Henry VIII, first published in 1991. Antonia Fraser did the same in her own 1992 biography of the same title; as did the British historian David Starkey in his 2003 book Six Wives: The Queens of Henry VIII. Giles Tremlett's biography, Catherine of Aragon: The Spanish Queen of Henry VIII, came out in 2010, and Julia Fox's dual biography, Sister Queens: The Noble, Tragic Lives of Katherine of Aragon and Juana, Queen of Castile, came out in 2011. Her baptismal name was "Catalina", but "Katherine" was soon the accepted form in England after her marriage to Arthur. Catherine herself signed her name "Katherine", "Katherina", "Katharine" and sometimes "Katharina". In a letter to her, Arthur, her husband, addressed her as "Princess Katerine". Her daughter Queen Mary I called her "Quene Kateryn", in her will. Rarely were names, particularly first names, written in an exact manner during the sixteenth century and it is evident from Catherine's own letters that she endorsed different variations. Loveknots built into his various palaces by her husband, Henry VIII, display the initials "H & K", as do other items belonging to Henry and Catherine, including gold goblets, a gold salt cellar, basins of gold, and candlesticks. Her tomb in Peterborough Cathedral is marked "Katharine Queen of England".	[ { "paragraph_id": 0, "text": "Catherine of Aragon (also spelt as Katherine, Spanish: Catalina; 16 December 1485 – 7 January 1536) was Queen of England as the first wife of King Henry VIII from their marriage on 11 June 1509 until their annulment on 23 May 1533. Born in Spain, she was Princess of Wales while married to Henry's elder brother, Arthur, Prince of Wales, for a short period before his death.", "title": "" }, { "paragraph_id": 1, "text": "The daughter of Isabella I of Castile and Ferdinand II of Aragon, Catherine was three years old when she was betrothed to Arthur, heir apparent to the English throne. They married in 1501, but Arthur died five months later. Catherine spent years in limbo, and during this time, she held the position of ambassador of the Aragonese crown to England in 1507, the first known female ambassador in European history. She married Henry shortly after his accession in 1509. For six months in 1513, she served as regent of England while Henry was in France. During that time the English defeated a Scottish invasion at the Battle of Flodden, an event in which Catherine played an important part with an emotional speech about courage and patriotism.", "title": "" }, { "paragraph_id": 2, "text": "By 1526, Henry was infatuated with Anne Boleyn and dissatisfied that his marriage to Catherine had produced no surviving sons, leaving their daughter Mary as heir presumptive at a time when there was no established precedent for a woman on the throne. He sought to have their marriage annulled, setting in motion a chain of events that led to England's schism with the Catholic Church. When Pope Clement VII refused to annul the marriage, Henry defied him by assuming supremacy over religious matters in England. In 1533 their marriage was consequently declared invalid and Henry married Anne on the judgement of clergy in England, without reference to the pope. Catherine refused to accept Henry as supreme head of the Church in England and considered herself the king's rightful wife and queen, attracting much popular sympathy. Despite this, Henry acknowledged her only as dowager princess of Wales. After being banished from court by Henry, Catherine lived out the remainder of her life at Kimbolton Castle, dying there in January 1536 of cancer. The English people held Catherine in high esteem, and her death set off tremendous mourning. Her daughter Mary would become the first undisputed English queen regnant in 1553.", "title": "" }, { "paragraph_id": 3, "text": "Catherine commissioned The Education of a Christian Woman by Juan Luis Vives, who dedicated the book, controversial at the time, to the Queen in 1523. Such was Catherine's impression on people that even her adversary Thomas Cromwell said of her, \"If not for her sex, she could have defied all the heroes of History.\" She successfully appealed for the lives of the rebels involved in the Evil May Day, for the sake of their families, and also won widespread admiration by starting an extensive programme for the relief of the poor. Catherine was a patron of Renaissance humanism and a friend of the great scholars Erasmus of Rotterdam and Thomas More.", "title": "" }, { "paragraph_id": 4, "text": "Catherine was born at the Archbishop's Palace of Alcalá de Henares near Madrid, in the early hours of 16 December 1485. She was the youngest surviving child of King Ferdinand II of Aragon and Queen Isabella I of Castile. Catherine was quite short in stature with long red hair, wide blue eyes, a round face, and a fair complexion. She was descended, on her maternal side, from the House of Lancaster, an English royal house; her great-grandmother Catherine of Lancaster, after whom she was named, and her great-great-grandmother Philippa of Lancaster were both daughters of John of Gaunt and granddaughters of Edward III of England. Consequently, she was third cousin of her father-in-law, Henry VII of England, and fourth cousin of her mother-in-law Elizabeth of York.", "title": "Early life" }, { "paragraph_id": 5, "text": "Catherine was educated by a tutor, Alessandro Geraldini, who was a clerk in Holy Orders. She studied arithmetic, canon and civil law, classical literature, genealogy and heraldry, history, philosophy, religion, and theology. She had a strong religious upbringing and developed her Roman Catholic faith that would play a major role in later life. She learned to speak, read and write in Castilian Spanish and Latin, and spoke French and Greek. Erasmus later said that Catherine \"loved good literature which she had studied with success since childhood\". She had been given lessons in domestic skills, such as cooking, embroidery, lace-making, needlepoint, sewing, spinning, and weaving and was also taught music, dancing, drawing, as well as being carefully educated in good manners and court etiquette.", "title": "Early life" }, { "paragraph_id": 6, "text": "At an early age, Catherine was considered a suitable wife for Arthur, Prince of Wales, heir apparent to the English throne, due to the English ancestry she inherited from her mother. Theoretically, by means of her mother, Catherine had a stronger legitimate claim to the English throne than King Henry VII himself through the first two wives of John of Gaunt, 1st Duke of Lancaster: Blanche of Lancaster and Constance of Castile. In contrast, Henry VII was the descendant of Gaunt's third marriage to Katherine Swynford, whose children were born out of wedlock and only legitimised after the death of Constance and the marriage of John to Katherine. The children of John and Katherine, while legitimised, were barred from inheriting the English throne, a stricture that was ignored in later generations. Because of Henry's descent through illegitimate children barred from succession to the English throne, the Tudor monarchy was not accepted by all European kingdoms. At the time, the House of Trastámara was the most prestigious in Europe, due to the rule of the Catholic Monarchs, so the alliance of Catherine and Arthur validated the House of Tudor in the eyes of European royalty and strengthened the Tudor claim to the English throne via Catherine of Aragon's ancestry. It would have given a male heir an indisputable claim to the throne. The two were married by proxy on 19 May 1499 and corresponded in Latin until Arthur turned fifteen, when it was decided that they were old enough to begin their conjugal life.", "title": "Early life" }, { "paragraph_id": 7, "text": "Catherine was accompanied to England by the following ambassadors: the 3rd Count of Cabra; Alonso de Fonseca, Archbishop of Santiago de Compostela; and Antonio de Rojas Manrique, Bishop of Mallorca. She brought a group of her African attendants with her, including one identified as the trumpeter John Blanke. They are the first Africans recorded to have arrived in London at the time, and were considered luxury servants. They caused a great impression about the princess and the power of her family. Her Spanish retinue, including Francisco Felipe, was supervised by her duenna, Elvira Manuel.", "title": "Early life" }, { "paragraph_id": 8, "text": "At first it was thought Catherine's ship would arrive at Gravesend. A number of English gentlewomen were appointed to be ready to welcome her on arrival in October 1501. They were to escort Catherine in a flotilla of barges on the Thames to the Tower of London.", "title": "Early life" }, { "paragraph_id": 9, "text": "Then-15-year-old Catherine departed from A Coruña on 17 August 1501 and met Arthur on 4 November at Dogmersfield in Hampshire. Little is known about their first impressions of each other, but Arthur did write to his parents-in-law that he would be \"a true and loving husband\" and told his parents that he was immensely happy to \"behold the face of his lovely bride\". The couple had corresponded in Latin, but found that they could not understand each other's spoken conversation, because they had learned different Latin pronunciations. Ten days later, on 14 November 1501, they were married at Old St. Paul's Cathedral. A dowry of 200,000 ducats had been agreed, and half was paid shortly after the marriage. It was noted that Catherine and her Spanish ladies in waiting were dressed in Spanish style at her arrival and at the wedding.", "title": "As wife and widow of Arthur" }, { "paragraph_id": 10, "text": "Once married, Arthur was sent to Ludlow Castle on the borders of Wales to preside over the Council of Wales and the Marches, as was his duty as Prince of Wales, and his bride accompanied him. A few months later, they both became ill, possibly with the sweating sickness, which was sweeping the area. Arthur died on 2 April 1502; 16-year-old Catherine recovered to find herself a widow.", "title": "As wife and widow of Arthur" }, { "paragraph_id": 11, "text": "At this point, Henry VII faced the challenge of avoiding the obligation to return her 200,000-ducat dowry, half of which he had not yet received, to her father, as required by her marriage contract should she return home. Following the death of Queen Elizabeth in February 1503, King Henry VII initially considered marrying Catherine himself, but the opposition of her father and potential questions over the legitimacy of the couple's issue ended the idea. To settle the matter, it was agreed that Catherine would marry Henry VII's second son, Henry, Duke of York, who was five years younger than she was. The death of Catherine's mother, however, meant that her \"value\" in the marriage market decreased. Castile was a much larger kingdom than Aragon, and it was inherited by Catherine's elder sister, Joanna. Ostensibly, the marriage was delayed until Henry was old enough, but Ferdinand II procrastinated so much over payment of the remainder of Catherine's dowry that it became doubtful that the marriage would take place. She lived as a virtual prisoner at Durham House in London. Some of the letters she wrote to her father complaining of her treatment have survived. In one of these letters she tells him that \"I choose what I believe, and say nothing. For I am not as simple as I may seem.\" She had little money and struggled to cope, as she had to support her ladies-in-waiting as well as herself. In 1507 she served as the Spanish ambassador to England, the first female ambassador in European history. While Henry VII and his counsellors expected her to be easily manipulated, Catherine went on to prove them wrong.", "title": "As wife and widow of Arthur" }, { "paragraph_id": 12, "text": "Marriage to Arthur's brother depended on the Pope granting a dispensation because canon law forbade a man to marry his brother's widow (Lev. 18:16). Catherine testified that her marriage to Arthur was never consummated as, also according to canon law, a marriage was dissoluble unless consummated.", "title": "As wife and widow of Arthur" }, { "paragraph_id": 13, "text": "Catherine's second wedding took place on 11 June 1509, seven years after Prince Arthur's death. She married Henry VIII, who had only just acceded to the throne, in a private ceremony in the church of the Observant Friars outside Greenwich Palace. She was 23 years of age.", "title": "Queen of England" }, { "paragraph_id": 14, "text": "On Saturday 23 June 1509, the traditional eve-of-coronation procession to Westminster Abbey was greeted by a large and enthusiastic crowd. As was the custom, the couple spent the night before their coronation at the Tower of London. On Midsummer's Day, Sunday, 24 June 1509, Henry VIII and Catherine were anointed and crowned together by the Archbishop of Canterbury at a lavish ceremony at Westminster Abbey. The coronation was followed by a banquet in Westminster Hall. Many new Knights of the Bath were created in honour of the coronation. In that month that followed, many social occasions presented the new Queen to the English public. She made a fine impression and was well received by the people of England.", "title": "Queen of England" }, { "paragraph_id": 15, "text": "On 11 June 1513, Henry appointed Catherine Regent in England with the titles \"Governor of the Realm and Captain General,\" while he went to France on a military campaign. When Louis d'Orléans, Duke of Longueville, was captured at Thérouanne, Henry sent him to stay in Catherine's household. She wrote to Wolsey that she and her council would prefer the Duke to stay in the Tower of London as the Scots were \"so busy as they now be\" and she added her prayers for \"God to sende us as good lukke against the Scotts, as the King hath ther.\" The war with Scotland occupied her subjects, and she was \"horrible busy with making standards, banners, and badges\" at Richmond Palace. Catherine wrote to towns, including Gloucester, asking them to send muster lists of men able to serve as soldiers. The Scots invaded and on 3 September 1513, she ordered Thomas Lovell to raise an army in the midland counties.", "title": "Queen of England" }, { "paragraph_id": 16, "text": "Catherine was issued with banners at Richmond on 8 September, and rode north in full armour to address the troops, despite being heavily pregnant at the time. Her fine speech was reported to the historian Peter Martyr d'Anghiera in Valladolid within a fortnight. Although an Italian newsletter said she was 100 miles (160 km) north of London when news of the victory at Battle of Flodden Field reached her, she was near Buckingham. From Woburn Abbey, she sent a letter to Henry along with a piece of the bloodied coat of King James IV of Scotland, who died in the battle, for Henry to use as a banner at the siege of Tournai.", "title": "Queen of England" }, { "paragraph_id": 17, "text": "Catherine's religious dedication increased as she became older, as did her interest in academics. She continued to broaden her knowledge and provide training for her daughter, Mary. Education among women became fashionable, partly because of Catherine's influence, and she donated large sums of money to several colleges. Henry, however, still considered a male heir essential. The Tudor dynasty was new, and its legitimacy might still be tested. A long civil war (1135–1154) had been fought the last time a woman (Empress Matilda) had inherited the throne. The disasters of civil war were still fresh in living memory from the Wars of the Roses.", "title": "Queen of England" }, { "paragraph_id": 18, "text": "In 1520, Catherine's nephew, the Holy Roman Emperor Charles V, paid a state visit to England, and she urged Henry to enter an alliance with Charles rather than with France. Immediately after his departure, she accompanied Henry to France on the celebrated visit to Francis I, the Field of the Cloth of Gold. Within two years, war was declared against France and the Emperor was once again welcome in England, where plans were afoot to betroth him to Catherine's daughter Mary.", "title": "Queen of England" }, { "paragraph_id": 19, "text": "In 1525, Henry VIII became enamoured of Anne Boleyn, a lady-in-waiting to Queen Catherine; Anne was between ten and seventeen years younger than Henry, being born between 1501 and 1507. Henry began pursuing her; Catherine was no longer able to bear children by this time. Henry began to believe that his marriage was cursed and sought confirmation from the Bible, which he interpreted to say that if a man marries his brother's wife, the couple will be childless. Even if her marriage to Arthur had not been consummated (and Catherine would insist to her dying day that she had come to Henry's bed a virgin), Henry's interpretation of that biblical passage meant that their marriage had been wrong in the eyes of God. Whether the pope at the time of Henry and Catherine's marriage had the right to overrule Henry's claimed scriptural impediment would become a hot topic in Henry's campaign to wrest an annulment from the present Pope. It is possible that the idea of annulment had been suggested to Henry much earlier than this, and is highly probable that it was motivated by his desire for a son. Before Henry's father ascended the throne, England was beset by civil warfare over rival claims to the English crown, and Henry may have wanted to avoid a similar uncertainty over the succession.", "title": "The King's great matter" }, { "paragraph_id": 20, "text": "It soon became the one absorbing object of Henry's desires to secure an annulment. Catherine was defiant when it was suggested that she quietly retire to a nunnery, saying: \"God never called me to a nunnery. I am the King's true and legitimate wife.\" He set his hopes upon an appeal to the Holy See, acting independently of Cardinal Thomas Wolsey, whom he told nothing of his plans. William Knight, the King's secretary, was sent to Pope Clement VII to sue for an annulment, on the grounds that the dispensing bull of Pope Julius II was obtained by false pretenses.", "title": "The King's great matter" }, { "paragraph_id": 21, "text": "As the pope was, at that time, the prisoner of Catherine's nephew Emperor Charles V following the Sack of Rome in May 1527, Knight had difficulty in obtaining access to him. In the end, Henry's envoy had to return without accomplishing much. Henry now had no choice but to put this great matter into the hands of Wolsey, who did all he could to secure a decision in Henry's favour.", "title": "The King's great matter" }, { "paragraph_id": 22, "text": "Both the Pope and Martin Luther raised the possibility that Henry have two wives, not to re-introduce polygamy generally, but \"to preserve the royal dignity of Catherine and Mary\".", "title": "The King's great matter" }, { "paragraph_id": 23, "text": "Wolsey went so far as to convene an ecclesiastical court in England with a representative of the pope presiding, and Henry and Catherine herself in attendance. The pope had no intention of allowing a decision to be reached in England, and his legate was recalled. (How far the pope was influenced by Charles V is difficult to say, but it is clear Henry saw that the pope was unlikely to annul his marriage to the emperor's aunt.) The Pope forbade Henry to marry again before a decision was given in Rome. Wolsey had failed and was dismissed from public office in 1529. Wolsey then began a secret plot to have Anne Boleyn forced into exile and began communicating with the pope to that end. When this was discovered, Henry ordered Wolsey's arrest and, had he not been terminally ill and died in 1530, he might have been executed for treason.", "title": "The King's great matter" }, { "paragraph_id": 24, "text": "A year later, Catherine was banished from court, and her old rooms were given to Anne Boleyn. Catherine wrote in a letter to Charles V in 1531:", "title": "The King's great matter" }, { "paragraph_id": 25, "text": "My tribulations are so great, my life so disturbed by the plans daily invented to further the King's wicked intention, the surprises which the King gives me, with certain persons of his council, are so mortal, and my treatment is what God knows, that it is enough to shorten ten lives, much more mine.", "title": "The King's great matter" }, { "paragraph_id": 26, "text": "When Archbishop of Canterbury William Warham died, the Boleyn family's chaplain, Thomas Cranmer, was appointed to the vacant position.", "title": "The King's great matter" }, { "paragraph_id": 27, "text": "When Henry decided to annul his marriage to Catherine, John Fisher became her most trusted counsellor and one of her chief supporters. He appeared in the legates' court on her behalf, where he shocked people with the directness of his language, and by declaring that, like John the Baptist, he was ready to die on behalf of the indissolubility of marriage. Henry was so enraged by this that he wrote a long Latin address to the legates in answer to Fisher's speech. Fisher's copy of this still exists, with his manuscript annotations in the margin which show how little he feared Henry's anger. The removal of the cause to Rome ended Fisher's role in the matter, but Henry never forgave him. Other people who supported Catherine's case included Thomas More; Henry's own sister Mary Tudor, Queen of France; María de Salinas; Holy Roman Emperor Charles V; Pope Paul III; and Protestant Reformers Martin Luther and William Tyndale.", "title": "The King's great matter" }, { "paragraph_id": 28, "text": "Upon returning to Dover from a meeting with King Francis I of France in Calais, Henry married Anne Boleyn in a secret ceremony. Some sources speculate that Anne was already pregnant at the time (and Henry did not want to risk a son being born illegitimate) but others testify that Anne (who had seen her sister Mary Boleyn taken up as the king's mistress and summarily cast aside) refused to sleep with Henry until they were married. Henry defended the lawfulness of their union by pointing out that Catherine had previously been married. If she and Arthur had consummated their marriage, Henry by canon law had the right to remarry. On 23 May 1533, Cranmer, sitting in judgement at a special court convened at Dunstable Priory to rule on the validity of Henry's marriage to Catherine, declared the marriage unlawful, even though Catherine had testified that she and Arthur had never had physical relations. Five days later, on 28 May 1533, Cranmer ruled that Henry and Anne's marriage was valid.", "title": "Banishment and death" }, { "paragraph_id": 29, "text": "Until the end of her life, Catherine would refer to herself as Henry's only lawful wedded wife and England's only rightful queen, and her servants continued to address her as such. Henry refused her the right to any title but \"Dowager Princess of Wales\" in recognition of her position as his brother's widow.", "title": "Banishment and death" }, { "paragraph_id": 30, "text": "Catherine went to live at The More Castle, Hertfordshire, late in 1531. After that, she was successively moved to the Royal Palace of Hatfield, Hertfordshire (May to September 1532), Elsyng Palace, Enfield (September 1532 to February 1533), Ampthill Castle, Bedfordshire (February to July 1533) and Buckden Towers, Cambridgeshire (July 1533 to May 1534). She was then finally transferred to Kimbolton Castle, Cambridgeshire where she confined herself to one room, which she left only to attend Mass, dressed only in the hair shirt of the Order of St. Francis, and fasted continuously. While she was permitted to receive occasional visitors, she was forbidden to see her daughter Mary. They were also forbidden to communicate in writing, but sympathisers discreetly conveyed letters between the two. Henry offered both mother and daughter better quarters and permission to see each other if they would acknowledge Anne Boleyn as the new queen; both refused.", "title": "Banishment and death" }, { "paragraph_id": 31, "text": "In late December 1535, sensing her death was near, Catherine made her will, and wrote to her nephew, the Emperor Charles V, asking him to protect her daughter. It has been claimed that she then penned one final letter to Henry:", "title": "Banishment and death" }, { "paragraph_id": 32, "text": "My most dear lord, king and husband,", "title": "Banishment and death" }, { "paragraph_id": 33, "text": "The hour of my death now drawing on, the tender love I owe you forceth me, my case being such, to commend myself to you, and to put you in remembrance with a few words of the health and safeguard of your soul which you ought to prefer before all worldly matters, and before the care and pampering of your body, for the which you have cast me into many calamities and yourself into many troubles. For my part, I pardon you everything, and I wish to devoutly pray God that He will pardon you also. For the rest, I commend unto you our daughter Mary, beseeching you to be a good father unto her, as I have heretofore desired. I entreat you also, on behalf of my maids, to give them marriage portions, which is not much, they being but three. For all my other servants I solicit the wages due them, and a year more, lest they be unprovided for. Lastly, I make this vow, that mine eyes desire you above all things. Katharine the Quene.", "title": "Banishment and death" }, { "paragraph_id": 34, "text": "The authenticity of the letter itself has been questioned, but not Catherine's attitude in its wording, which has been reported with variations in different sources.", "title": "Banishment and death" }, { "paragraph_id": 35, "text": "Catherine died at Kimbolton Castle on 7 January 1536. The following day, news of her death reached the king. At the time there were rumours that she was poisoned, possibly by Gregory di Casale. According to the chronicler Edward Hall, Anne Boleyn wore yellow for the mourning, which has been interpreted in various ways; Polydore Vergil interpreted this to mean that Anne did not mourn. Chapuys reported that it was King Henry who decked himself in yellow, celebrating the news and making a great show of his and Anne's daughter, Elizabeth, to his courtiers. This was seen as distasteful and vulgar by many. Another theory is that the dressing in yellow was out of respect for Catherine as yellow was said to be the Spanish colour of mourning. Certainly, later in the day it is reported that Henry and Anne both individually and privately wept for her death. On the day of Catherine's funeral, Anne Boleyn miscarried a male child. Rumours then circulated that Catherine had been poisoned by Anne or Henry, or both. The rumours were born after the apparent discovery during her embalming that there was a black growth on her heart that might have been caused by poisoning. Modern medical experts are in agreement that her heart's discolouration was due not to poisoning, but to cancer, something which was not understood at the time.", "title": "Banishment and death" }, { "paragraph_id": 36, "text": "Catherine was buried in Peterborough Cathedral with the ceremony due to her position as a Dowager Princess of Wales, and not a queen. Henry did not attend the funeral and forbade Mary to attend.", "title": "Banishment and death" }, { "paragraph_id": 37, "text": "Catherine was a member of the Third Order of Saint Francis and she was punctilious in her religious obligations in the Order, integrating without demur her necessary duties as queen with her personal piety. After the annulment, she was quoted \"I would rather be a poor beggar's wife and be sure of heaven, than queen of all the world and stand in doubt thereof by reason of my own consent.\"", "title": "Faith" }, { "paragraph_id": 38, "text": "The outward celebration of saints and holy relics formed no major part of her personal devotions, which she rather expressed in the Mass, prayer, confession and penance. Privately, however, she was aware of what she identified as the shortcomings of the papacy and church officialdom. Her doubts about church improprieties certainly did not extend so far as to support the allegations of corruption made public by Martin Luther in Wittenberg in 1517, which were soon to have such far-reaching consequences in initiating the Protestant Reformation.", "title": "Faith" }, { "paragraph_id": 39, "text": "In 1523 Alfonso de Villa Sancta, a learned friar of the Observant (reform) branch of the Friars Minor and friend of the king's old advisor Erasmus, dedicated to the queen his book De Liberio Arbitrio adversus Melanchthonem. The book denounced Philip Melanchthon, a supporter of Luther. Acting as her confessor, he was able to nominate her for the title of \"Defender of the Faith\" for denying Luther's arguments.", "title": "Faith" }, { "paragraph_id": 40, "text": "In her youth, Catherine was described as \"the most beautiful creature in the world\" and that there was \"nothing lacking in her that the most beautiful girl should have\". Thomas More and Lord Herbert would reflect later in her lifetime that in regard to her appearance \"there were few women who could compete with the Queen [Catherine] in her prime.\"", "title": "Appearance" }, { "paragraph_id": 41, "text": "The controversial book The Education of a Christian Woman by Juan Luis Vives, which claimed women have the right to an education, was dedicated to and commissioned by her. Such was Catherine's impression on people, that even her enemy, Thomas Cromwell, said of her \"If not for her sex, she could have defied all the heroes of History.\" She successfully appealed for the lives of the rebels involved in the Evil May Day for the sake of their families. Furthermore, Catherine won widespread admiration by starting an extensive programme for the relief of the poor. She was also a patron of Renaissance humanism, and a friend of the great scholars Erasmus of Rotterdam and Saint Thomas More. Some saw her as a martyr.", "title": "Legacy, memory and historiography" }, { "paragraph_id": 42, "text": "In the reign of her daughter Mary I of England, her marriage to Henry VIII was declared \"good and valid\". Her daughter Queen Mary also had several portraits commissioned of Catherine, and it would not by any means be the last time she was painted. After her death, numerous portraits were painted of her, particularly of her speech at the Legatine Trial, a moment accurately rendered in Shakespeare's play about Henry VIII.", "title": "Legacy, memory and historiography" }, { "paragraph_id": 43, "text": "Her tomb in Peterborough Cathedral can be seen and there is hardly ever a time when it is not decorated with flowers or pomegranates, her heraldic symbol. It bears the title Katharine Queen of England.", "title": "Legacy, memory and historiography" }, { "paragraph_id": 44, "text": "In the 20th century, George V's wife, Mary of Teck, had her grave upgraded and there are now banners there denoting Catherine as a Queen of England. Every year at Peterborough Cathedral there is a service in her memory. There are processions, prayers and various events in the Cathedral including processions to Catherine's grave in which candles, pomegranates, flowers and other offerings are placed on her grave. On the service commemorating the 470th anniversary of her death, the Spanish Ambassador to the United Kingdom attended. During the 2010 service a rendition of Catherine of Aragon's speech before the Legatine court was read by Jane Lapotaire. There is a statue of her in her birthplace of Alcalá de Henares, as a young woman holding a book and a rose.", "title": "Legacy, memory and historiography" }, { "paragraph_id": 45, "text": "Catherine has remained a popular biographical subject to the present day. The American historian Garrett Mattingly was the author of a popular biography Katherine of Aragon in 1942. In 1966, Catherine and her many supporters at court were the subjects of Catherine of Aragon and her Friends, a biography by John E. Paul. In 1967, Mary M. Luke wrote the first book of her Tudor trilogy, Catherine the Queen which portrayed her and the tumultuous era of English history through which she lived.", "title": "Legacy, memory and historiography" }, { "paragraph_id": 46, "text": "In recent years, the historian Alison Weir covered her life extensively in her biography The Six Wives of Henry VIII, first published in 1991. Antonia Fraser did the same in her own 1992 biography of the same title; as did the British historian David Starkey in his 2003 book Six Wives: The Queens of Henry VIII. Giles Tremlett's biography, Catherine of Aragon: The Spanish Queen of Henry VIII, came out in 2010, and Julia Fox's dual biography, Sister Queens: The Noble, Tragic Lives of Katherine of Aragon and Juana, Queen of Castile, came out in 2011.", "title": "Legacy, memory and historiography" }, { "paragraph_id": 47, "text": "Her baptismal name was \"Catalina\", but \"Katherine\" was soon the accepted form in England after her marriage to Arthur. Catherine herself signed her name \"Katherine\", \"Katherina\", \"Katharine\" and sometimes \"Katharina\". In a letter to her, Arthur, her husband, addressed her as \"Princess Katerine\". Her daughter Queen Mary I called her \"Quene Kateryn\", in her will. Rarely were names, particularly first names, written in an exact manner during the sixteenth century and it is evident from Catherine's own letters that she endorsed different variations. Loveknots built into his various palaces by her husband, Henry VIII, display the initials \"H & K\", as do other items belonging to Henry and Catherine, including gold goblets, a gold salt cellar, basins of gold, and candlesticks. Her tomb in Peterborough Cathedral is marked \"Katharine Queen of England\".", "title": "Legacy, memory and historiography" } ]	Catherine of Aragon was Queen of England as the first wife of King Henry VIII from their marriage on 11 June 1509 until their annulment on 23 May 1533. Born in Spain, she was Princess of Wales while married to Henry's elder brother, Arthur, Prince of Wales, for a short period before his death. The daughter of Isabella I of Castile and Ferdinand II of Aragon, Catherine was three years old when she was betrothed to Arthur, heir apparent to the English throne. They married in 1501, but Arthur died five months later. Catherine spent years in limbo, and during this time, she held the position of ambassador of the Aragonese crown to England in 1507, the first known female ambassador in European history. She married Henry shortly after his accession in 1509. For six months in 1513, she served as regent of England while Henry was in France. During that time the English defeated a Scottish invasion at the Battle of Flodden, an event in which Catherine played an important part with an emotional speech about courage and patriotism. By 1526, Henry was infatuated with Anne Boleyn and dissatisfied that his marriage to Catherine had produced no surviving sons, leaving their daughter Mary as heir presumptive at a time when there was no established precedent for a woman on the throne. He sought to have their marriage annulled, setting in motion a chain of events that led to England's schism with the Catholic Church. When Pope Clement VII refused to annul the marriage, Henry defied him by assuming supremacy over religious matters in England. In 1533 their marriage was consequently declared invalid and Henry married Anne on the judgement of clergy in England, without reference to the pope. Catherine refused to accept Henry as supreme head of the Church in England and considered herself the king's rightful wife and queen, attracting much popular sympathy. Despite this, Henry acknowledged her only as dowager princess of Wales. After being banished from court by Henry, Catherine lived out the remainder of her life at Kimbolton Castle, dying there in January 1536 of cancer. The English people held Catherine in high esteem, and her death set off tremendous mourning. Her daughter Mary would become the first undisputed English queen regnant in 1553. Catherine commissioned The Education of a Christian Woman by Juan Luis Vives, who dedicated the book, controversial at the time, to the Queen in 1523. Such was Catherine's impression on people that even her adversary Thomas Cromwell said of her, "If not for her sex, she could have defied all the heroes of History." She successfully appealed for the lives of the rebels involved in the Evil May Day, for the sake of their families, and also won widespread admiration by starting an extensive programme for the relief of the poor. Catherine was a patron of Renaissance humanism and a friend of the great scholars Erasmus of Rotterdam and Thomas More.	2001-10-30T07:05:48Z	2023-12-26T02:52:54Z	[ "Template:Use British English", "Template:Main", "Template:Citation", "Template:Cite web", "Template:S-bef", "Template:Authority control", "Template:Pp", "Template:Notelist", "Template:Cite book", "Template:Webarchive", "Template:English consort", "Template:Lang-es", "Template:Wives of Henry VIII", "Template:ISBN", "Template:Wikisource", "Template:S-end", "Template:Infantas of Aragon", "Template:Infobox royalty", "Template:Circa", "Template:Convert", "Template:Family tree of the Wives of Henry VIII", "Template:Dead link", "Template:Sister project links", "Template:NPG name", "Template:Sfn", "Template:Clear right", "Template:Cite CE1913", "Template:Cite ODNB", "Template:Refbegin", "Template:S-ttl", "Template:S-aft", "Template:Use dmy dates", "Template:Ahnentafel", "Template:Reflist", "Template:Self-published source", "Template:Cite EB1911", "Template:Princesses of Wales", "Template:Short description", "Template:Efn", "Template:Rp", "Template:Quotation", "Template:Portal", "Template:Google books", "Template:S-hou", "Template:S-roy", "Template:S-vac", "Template:Pp-move-indef", "Template:Nowrap", "Template:Refend", "Template:S-start", "Template:S-dip", "Template:Infantas of Castile" ]	https://en.wikipedia.org/wiki/Catherine_of_Aragon
6,943	Cathode ray	Cathode rays or electron beams (e-beam) are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, glass behind the positive electrode is observed to glow, due to electrons emitted from the cathode (the electrode connected to the negative terminal of the voltage supply). They were first observed in 1859 by German physicist Julius Plücker and Johann Wilhelm Hittorf, and were named in 1876 by Eugen Goldstein Kathodenstrahlen, or cathode rays. In 1897, British physicist J. J. Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, which was later named the electron. Cathode-ray tubes (CRTs) use a focused beam of electrons deflected by electric or magnetic fields to render an image on a screen. Cathode rays are so named because they are emitted by the negative electrode, or cathode, in a vacuum tube. To release electrons into the tube, they first must be detached from the atoms of the cathode. In the early experimental cold cathode vacuum tubes in which cathode rays were discovered, called Crookes tubes, this was done by using a high electrical potential of thousands of volts between the anode and the cathode to ionize the residual gas atoms in the tube. The positive ions were accelerated by the electric field toward the cathode, and when they collided with it they knocked electrons out of its surface; these were the cathode rays. Modern vacuum tubes use thermionic emission, in which the cathode is made of a thin wire filament which is heated by a separate electric current passing through it. The increased random heat motion of the filament knocks electrons out of the surface of the filament, into the evacuated space of the tube. Since the electrons have a negative charge, they are repelled by the negative cathode and attracted to the positive anode. They travel in parallel lines through the empty tube. The voltage applied between the electrodes accelerates these low mass particles to high velocities. Cathode rays are invisible, but their presence was first detected in these Crookes tubes when they struck the glass wall of the tube, exciting the atoms of the glass coating and causing them to emit light, a glow called fluorescence. Researchers noticed that objects placed in the tube in front of the cathode could cast a shadow on the glowing wall, and realized that something must be traveling in straight lines from the cathode. After the electrons strike the back of the tube they make their way to the anode, then travel through the anode wire through the power supply and back through the cathode wire to the cathode, so cathode rays carry electric current through the tube. The current in a beam of cathode rays through a vacuum tube can be controlled by passing it through a metal screen of wires (a grid) between cathode and anode, to which a small negative voltage is applied. The electric field of the wires deflects some of the electrons, preventing them from reaching the anode. The amount of current that gets through to the anode depends on the voltage on the grid. Thus, a small voltage on the grid can be made to control a much larger voltage on the anode. This is the principle used in vacuum tubes to amplify electrical signals. The triode vacuum tube developed between 1907 and 1914 was the first electronic device that could amplify, and is still used in some applications such as radio transmitters. High speed beams of cathode rays can also be steered and manipulated by electric fields created by additional metal plates in the tube to which voltage is applied, or magnetic fields created by coils of wire (electromagnets). These are used in cathode-ray tubes, found in televisions and computer monitors, and in electron microscopes. After the 1654 invention of the vacuum pump by Otto von Guericke, physicists began to experiment with passing high voltage electricity through rarefied air. In 1705, it was noted that electrostatic generator sparks travel a longer distance through low pressure air than through atmospheric pressure air. In 1838, Michael Faraday applied a high voltage between two metal electrodes at either end of a glass tube that had been partially evacuated of air, and noticed a strange light arc with its beginning at the cathode (negative electrode) and its end at the anode (positive electrode). In 1857, German physicist and glassblower Heinrich Geissler sucked even more air out with an improved pump, to a pressure of around 10 atm and found that, instead of an arc, a glow filled the tube. The voltage applied between the two electrodes of the tubes, generated by an induction coil, was anywhere between a few kilovolts and 100 kV. These were called Geissler tubes, similar to today's neon signs. The explanation of these effects was that the high voltage accelerated free electrons and electrically charged atoms (ions) naturally present in the air of the tube. At low pressure, there was enough space between the gas atoms that the electrons could accelerate to high enough speeds that when they struck an atom they knocked electrons off of it, creating more positive ions and free electrons, which went on to create more ions and electrons in a chain reaction, known as a glow discharge. The positive ions were attracted to the cathode and when they struck it knocked more electrons out of it, which were attracted toward the anode. Thus the ionized air was electrically conductive and an electric current flowed through the tube. Geissler tubes had enough air in them that the electrons could only travel a tiny distance before colliding with an atom. The electrons in these tubes moved in a slow diffusion process, never gaining much speed, so these tubes didn't produce cathode rays. Instead, they produced a colorful glow discharge (as in a modern neon light), caused when the electrons struck gas atoms, exciting their orbital electrons to higher energy levels. The electrons released this energy as light. This process is called fluorescence. By the 1870s, British physicist William Crookes and others were able to evacuate tubes to a lower pressure, below 10 atm. These were called Crookes tubes. Faraday had been the first to notice a dark space just in front of the cathode, where there was no luminescence. This came to be called the "cathode dark space", "Faraday dark space" or "Crookes dark space". Crookes found that as he pumped more air out of the tubes, the Faraday dark space spread down the tube from the cathode toward the anode, until the tube was totally dark. But at the anode (positive) end of the tube, the glass of the tube itself began to glow. What was happening was that as more air was pumped from the tube, the electrons knocked out of the cathode when positive ions struck it could travel farther, on average, before they struck a gas atom. By the time the tube was dark, most of the electrons could travel in straight lines from the cathode to the anode end of the tube without a collision. With no obstructions, these low mass particles were accelerated to high velocities by the voltage between the electrodes. These were the cathode rays. When they reached the anode end of the tube, they were traveling so fast that, although they were attracted to it, they often flew past the anode and struck the back wall of the tube. When they struck atoms in the glass wall, they excited their orbital electrons to higher energy levels. When the electrons returned to their original energy level, they released the energy as light, causing the glass to fluoresce, usually a greenish or bluish color. Later researchers painted the inside back wall with fluorescent chemicals such as zinc sulfide, to make the glow more visible. Cathode rays themselves are invisible, but this accidental fluorescence allowed researchers to notice that objects in the tube in front of the cathode, such as the anode, cast sharp-edged shadows on the glowing back wall. In 1869, German physicist Johann Hittorf was first to realize that something must be traveling in straight lines from the cathode to cast the shadows. Eugen Goldstein named them cathode rays (German Kathodenstrahlen). At this time, atoms were the smallest particles known, and were believed to be indivisible. What carried electric currents was a mystery. During the last quarter of the 19th century, many historic experiments were done with Crookes tubes to determine what cathode rays were. There were two theories. Crookes and Arthur Schuster believed they were particles of "radiant matter," that is, electrically charged atoms. German scientists Eilhard Wiedemann, Heinrich Hertz and Goldstein believed they were "aether waves", some new form of electromagnetic radiation, and were separate from what carried the electric current through the tube. The debate was resolved in 1897 when J. J. Thomson measured the mass of cathode rays, showing they were made of particles, but were around 1800 times lighter than the lightest atom, hydrogen. Therefore, they were not atoms, but a new particle, the first subatomic particle to be discovered, which he originally called "corpuscle" but was later named electron, after particles postulated by George Johnstone Stoney in 1874. He also showed they were identical with particles given off by photoelectric and radioactive materials. It was quickly recognized that they are the particles that carry electric currents in metal wires, and carry the negative electric charge of the atom. Thomson was given the 1906 Nobel Prize in Physics for this work. Philipp Lenard also contributed a great deal to cathode-ray theory, winning the Nobel Prize in 1905 for his research on cathode rays and their properties. The gas ionization (or cold cathode) method of producing cathode rays used in Crookes tubes was unreliable, because it depended on the pressure of the residual air in the tube. Over time, the air was absorbed by the walls of the tube, and it stopped working. A more reliable and controllable method of producing cathode rays was investigated by Hittorf and Goldstein, and rediscovered by Thomas Edison in 1880. A cathode made of a wire filament heated red hot by a separate current passing through it would release electrons into the tube by a process called thermionic emission. The first true electronic vacuum tubes, invented in 1904 by John Ambrose Fleming, used this hot cathode technique, and they superseded Crookes tubes. These tubes didn't need gas in them to work, so they were evacuated to a lower pressure, around 10 atm (10 Pa). The ionization method of creating cathode rays used in Crookes tubes is today only used in a few specialized gas discharge tubes such as krytrons. In 1906, Lee De Forest found that a small voltage on a grid of metal wires between the cathode and anode could control a current in a beam of cathode rays passing through a vacuum tube. His invention, called the triode, was the first device that could amplify electric signals, and revolutionized electrical technology, creating the new field of electronics. Vacuum tubes made radio and television broadcasting possible, as well as radar, talking movies, audio recording, and long distance telephone service, and were the foundation of consumer electronic devices until the 1960s, when the transistor brought the era of vacuum tubes to a close. Cathode rays are now usually called electron beams. The technology of manipulating electron beams pioneered in these early tubes was applied practically in the design of vacuum tubes, particularly in the invention of the cathode-ray tube (CRT) by Ferdinand Braun in 1897, which was used in television sets and oscilloscopes. Today, electron beams are employed in sophisticated devices such as electron microscopes, electron beam lithography and particle accelerators. Like a wave, cathode rays travel in straight lines, and produce a shadow when obstructed by objects. Ernest Rutherford demonstrated that rays could pass through thin metal foils, behavior expected of a particle. These conflicting properties caused disruptions when trying to classify it as a wave or particle. Crookes insisted it was a particle, while Hertz maintained it was a wave. The debate was resolved when an electric field was used to deflect the rays by J. J. Thomson. This was evidence that the beams were composed of particles because scientists knew it was impossible to deflect electromagnetic waves with an electric field. These can also create mechanical effects, fluorescence, etc. Louis de Broglie later (1924) suggested in his doctoral dissertation that electrons are like photons and can act as waves. The wave-like behaviour of cathode rays was later directly demonstrated using reflection from a nickel surface by Davisson and Germer, and transmission through celluloid thin films and later metal films by George Paget Thomson and Alexander Reid in 1927. (Alexander Reid, who was Thomson's graduate student, performed the first experiments but he died soon after in a motorcycle accident and is rarely mentioned.)	[ { "paragraph_id": 0, "text": "Cathode rays or electron beams (e-beam) are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, glass behind the positive electrode is observed to glow, due to electrons emitted from the cathode (the electrode connected to the negative terminal of the voltage supply). They were first observed in 1859 by German physicist Julius Plücker and Johann Wilhelm Hittorf, and were named in 1876 by Eugen Goldstein Kathodenstrahlen, or cathode rays. In 1897, British physicist J. J. Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, which was later named the electron. Cathode-ray tubes (CRTs) use a focused beam of electrons deflected by electric or magnetic fields to render an image on a screen.", "title": "" }, { "paragraph_id": 1, "text": "Cathode rays are so named because they are emitted by the negative electrode, or cathode, in a vacuum tube. To release electrons into the tube, they first must be detached from the atoms of the cathode. In the early experimental cold cathode vacuum tubes in which cathode rays were discovered, called Crookes tubes, this was done by using a high electrical potential of thousands of volts between the anode and the cathode to ionize the residual gas atoms in the tube. The positive ions were accelerated by the electric field toward the cathode, and when they collided with it they knocked electrons out of its surface; these were the cathode rays. Modern vacuum tubes use thermionic emission, in which the cathode is made of a thin wire filament which is heated by a separate electric current passing through it. The increased random heat motion of the filament knocks electrons out of the surface of the filament, into the evacuated space of the tube.", "title": "Description" }, { "paragraph_id": 2, "text": "Since the electrons have a negative charge, they are repelled by the negative cathode and attracted to the positive anode. They travel in parallel lines through the empty tube. The voltage applied between the electrodes accelerates these low mass particles to high velocities. Cathode rays are invisible, but their presence was first detected in these Crookes tubes when they struck the glass wall of the tube, exciting the atoms of the glass coating and causing them to emit light, a glow called fluorescence. Researchers noticed that objects placed in the tube in front of the cathode could cast a shadow on the glowing wall, and realized that something must be traveling in straight lines from the cathode. After the electrons strike the back of the tube they make their way to the anode, then travel through the anode wire through the power supply and back through the cathode wire to the cathode, so cathode rays carry electric current through the tube.", "title": "Description" }, { "paragraph_id": 3, "text": "The current in a beam of cathode rays through a vacuum tube can be controlled by passing it through a metal screen of wires (a grid) between cathode and anode, to which a small negative voltage is applied. The electric field of the wires deflects some of the electrons, preventing them from reaching the anode. The amount of current that gets through to the anode depends on the voltage on the grid. Thus, a small voltage on the grid can be made to control a much larger voltage on the anode. This is the principle used in vacuum tubes to amplify electrical signals. The triode vacuum tube developed between 1907 and 1914 was the first electronic device that could amplify, and is still used in some applications such as radio transmitters. High speed beams of cathode rays can also be steered and manipulated by electric fields created by additional metal plates in the tube to which voltage is applied, or magnetic fields created by coils of wire (electromagnets). These are used in cathode-ray tubes, found in televisions and computer monitors, and in electron microscopes.", "title": "Description" }, { "paragraph_id": 4, "text": "After the 1654 invention of the vacuum pump by Otto von Guericke, physicists began to experiment with passing high voltage electricity through rarefied air. In 1705, it was noted that electrostatic generator sparks travel a longer distance through low pressure air than through atmospheric pressure air.", "title": "History" }, { "paragraph_id": 5, "text": "In 1838, Michael Faraday applied a high voltage between two metal electrodes at either end of a glass tube that had been partially evacuated of air, and noticed a strange light arc with its beginning at the cathode (negative electrode) and its end at the anode (positive electrode). In 1857, German physicist and glassblower Heinrich Geissler sucked even more air out with an improved pump, to a pressure of around 10 atm and found that, instead of an arc, a glow filled the tube. The voltage applied between the two electrodes of the tubes, generated by an induction coil, was anywhere between a few kilovolts and 100 kV. These were called Geissler tubes, similar to today's neon signs.", "title": "History" }, { "paragraph_id": 6, "text": "The explanation of these effects was that the high voltage accelerated free electrons and electrically charged atoms (ions) naturally present in the air of the tube. At low pressure, there was enough space between the gas atoms that the electrons could accelerate to high enough speeds that when they struck an atom they knocked electrons off of it, creating more positive ions and free electrons, which went on to create more ions and electrons in a chain reaction, known as a glow discharge. The positive ions were attracted to the cathode and when they struck it knocked more electrons out of it, which were attracted toward the anode. Thus the ionized air was electrically conductive and an electric current flowed through the tube.", "title": "History" }, { "paragraph_id": 7, "text": "Geissler tubes had enough air in them that the electrons could only travel a tiny distance before colliding with an atom. The electrons in these tubes moved in a slow diffusion process, never gaining much speed, so these tubes didn't produce cathode rays. Instead, they produced a colorful glow discharge (as in a modern neon light), caused when the electrons struck gas atoms, exciting their orbital electrons to higher energy levels. The electrons released this energy as light. This process is called fluorescence.", "title": "History" }, { "paragraph_id": 8, "text": "By the 1870s, British physicist William Crookes and others were able to evacuate tubes to a lower pressure, below 10 atm. These were called Crookes tubes. Faraday had been the first to notice a dark space just in front of the cathode, where there was no luminescence. This came to be called the \"cathode dark space\", \"Faraday dark space\" or \"Crookes dark space\". Crookes found that as he pumped more air out of the tubes, the Faraday dark space spread down the tube from the cathode toward the anode, until the tube was totally dark. But at the anode (positive) end of the tube, the glass of the tube itself began to glow.", "title": "History" }, { "paragraph_id": 9, "text": "What was happening was that as more air was pumped from the tube, the electrons knocked out of the cathode when positive ions struck it could travel farther, on average, before they struck a gas atom. By the time the tube was dark, most of the electrons could travel in straight lines from the cathode to the anode end of the tube without a collision. With no obstructions, these low mass particles were accelerated to high velocities by the voltage between the electrodes. These were the cathode rays.", "title": "History" }, { "paragraph_id": 10, "text": "When they reached the anode end of the tube, they were traveling so fast that, although they were attracted to it, they often flew past the anode and struck the back wall of the tube. When they struck atoms in the glass wall, they excited their orbital electrons to higher energy levels. When the electrons returned to their original energy level, they released the energy as light, causing the glass to fluoresce, usually a greenish or bluish color. Later researchers painted the inside back wall with fluorescent chemicals such as zinc sulfide, to make the glow more visible.", "title": "History" }, { "paragraph_id": 11, "text": "Cathode rays themselves are invisible, but this accidental fluorescence allowed researchers to notice that objects in the tube in front of the cathode, such as the anode, cast sharp-edged shadows on the glowing back wall. In 1869, German physicist Johann Hittorf was first to realize that something must be traveling in straight lines from the cathode to cast the shadows. Eugen Goldstein named them cathode rays (German Kathodenstrahlen).", "title": "History" }, { "paragraph_id": 12, "text": "At this time, atoms were the smallest particles known, and were believed to be indivisible. What carried electric currents was a mystery. During the last quarter of the 19th century, many historic experiments were done with Crookes tubes to determine what cathode rays were. There were two theories. Crookes and Arthur Schuster believed they were particles of \"radiant matter,\" that is, electrically charged atoms. German scientists Eilhard Wiedemann, Heinrich Hertz and Goldstein believed they were \"aether waves\", some new form of electromagnetic radiation, and were separate from what carried the electric current through the tube.", "title": "History" }, { "paragraph_id": 13, "text": "The debate was resolved in 1897 when J. J. Thomson measured the mass of cathode rays, showing they were made of particles, but were around 1800 times lighter than the lightest atom, hydrogen. Therefore, they were not atoms, but a new particle, the first subatomic particle to be discovered, which he originally called \"corpuscle\" but was later named electron, after particles postulated by George Johnstone Stoney in 1874. He also showed they were identical with particles given off by photoelectric and radioactive materials. It was quickly recognized that they are the particles that carry electric currents in metal wires, and carry the negative electric charge of the atom.", "title": "History" }, { "paragraph_id": 14, "text": "Thomson was given the 1906 Nobel Prize in Physics for this work. Philipp Lenard also contributed a great deal to cathode-ray theory, winning the Nobel Prize in 1905 for his research on cathode rays and their properties.", "title": "History" }, { "paragraph_id": 15, "text": "The gas ionization (or cold cathode) method of producing cathode rays used in Crookes tubes was unreliable, because it depended on the pressure of the residual air in the tube. Over time, the air was absorbed by the walls of the tube, and it stopped working.", "title": "History" }, { "paragraph_id": 16, "text": "A more reliable and controllable method of producing cathode rays was investigated by Hittorf and Goldstein, and rediscovered by Thomas Edison in 1880. A cathode made of a wire filament heated red hot by a separate current passing through it would release electrons into the tube by a process called thermionic emission. The first true electronic vacuum tubes, invented in 1904 by John Ambrose Fleming, used this hot cathode technique, and they superseded Crookes tubes. These tubes didn't need gas in them to work, so they were evacuated to a lower pressure, around 10 atm (10 Pa). The ionization method of creating cathode rays used in Crookes tubes is today only used in a few specialized gas discharge tubes such as krytrons.", "title": "History" }, { "paragraph_id": 17, "text": "In 1906, Lee De Forest found that a small voltage on a grid of metal wires between the cathode and anode could control a current in a beam of cathode rays passing through a vacuum tube. His invention, called the triode, was the first device that could amplify electric signals, and revolutionized electrical technology, creating the new field of electronics. Vacuum tubes made radio and television broadcasting possible, as well as radar, talking movies, audio recording, and long distance telephone service, and were the foundation of consumer electronic devices until the 1960s, when the transistor brought the era of vacuum tubes to a close.", "title": "History" }, { "paragraph_id": 18, "text": "Cathode rays are now usually called electron beams. The technology of manipulating electron beams pioneered in these early tubes was applied practically in the design of vacuum tubes, particularly in the invention of the cathode-ray tube (CRT) by Ferdinand Braun in 1897, which was used in television sets and oscilloscopes. Today, electron beams are employed in sophisticated devices such as electron microscopes, electron beam lithography and particle accelerators.", "title": "History" }, { "paragraph_id": 19, "text": "Like a wave, cathode rays travel in straight lines, and produce a shadow when obstructed by objects. Ernest Rutherford demonstrated that rays could pass through thin metal foils, behavior expected of a particle. These conflicting properties caused disruptions when trying to classify it as a wave or particle. Crookes insisted it was a particle, while Hertz maintained it was a wave. The debate was resolved when an electric field was used to deflect the rays by J. J. Thomson. This was evidence that the beams were composed of particles because scientists knew it was impossible to deflect electromagnetic waves with an electric field. These can also create mechanical effects, fluorescence, etc.", "title": "Properties" }, { "paragraph_id": 20, "text": "Louis de Broglie later (1924) suggested in his doctoral dissertation that electrons are like photons and can act as waves. The wave-like behaviour of cathode rays was later directly demonstrated using reflection from a nickel surface by Davisson and Germer, and transmission through celluloid thin films and later metal films by George Paget Thomson and Alexander Reid in 1927. (Alexander Reid, who was Thomson's graduate student, performed the first experiments but he died soon after in a motorcycle accident and is rarely mentioned.)", "title": "Properties" } ]	Cathode rays or electron beams (e-beam) are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, glass behind the positive electrode is observed to glow, due to electrons emitted from the cathode. They were first observed in 1859 by German physicist Julius Plücker and Johann Wilhelm Hittorf, and were named in 1876 by Eugen Goldstein Kathodenstrahlen, or cathode rays. In 1897, British physicist J. J. Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, which was later named the electron. Cathode-ray tubes (CRTs) use a focused beam of electrons deflected by electric or magnetic fields to render an image on a screen.	2001-10-30T10:44:00Z	2023-12-08T18:34:53Z	[ "Template:Cite journal", "Template:Authority control", "Template:More citations needed", "Template:Colend", "Template:Col div", "Template:Reflist", "Template:Citation", "Template:ISBN", "Template:Short description", "Template:Citation needed" ]	https://en.wikipedia.org/wiki/Cathode_ray
6,944	Cathode	A cathode is the electrode from which a conventional current leaves a polarized electrical device. This definition can be recalled by using the mnemonic CCD for Cathode Current Departs. A conventional current describes the direction in which positive charges move. Electrons have a negative electrical charge, so the movement of electrons is opposite to that of the conventional current flow. Consequently, the mnemonic cathode current departs also means that electrons flow into the device's cathode from the external circuit. For example, the end of a household battery marked with a + (plus) is the cathode. The electrode through which conventional current flows the other way, into the device, is termed an anode. Conventional current flows from cathode to anode outside the cell or device (with electrons moving in the opposite direction), regardless of the cell or device type and operating mode. Cathode polarity with respect to the anode can be positive or negative depending on how the device is being operated. Inside a device or a cell, positively charged cations always move towards the cathode and negatively charged anions move towards the anode, although cathode polarity depends on the device type, and can even vary according to the operating mode. Whether the cathode is negatively polarized (such as recharging a battery) or positively polarized (such as a battery in use), the cathode will draw electrons into it from outside, as well as attract positively charged cations from inside. A battery or galvanic cell in use has a cathode that is the positive terminal since that is where conventional current flows out of the device. This outward current is carried internally by positive ions moving from the electrolyte to the positive cathode (chemical energy is responsible for this "uphill" motion). It is continued externally by electrons moving into the battery which constitutes positive current flowing outwards. For example, the Daniell galvanic cell's copper electrode is the positive terminal and the cathode. A battery that is recharging or an electrolytic cell performing electrolysis has its cathode as the negative terminal, from which current exits the device and returns to the external generator as charge enters the battery/ cell. For example, reversing the current direction in a Daniell galvanic cell converts it into an electrolytic cell where the copper electrode is the positive terminal and also the anode. In a diode, the cathode is the negative terminal at the pointed end of the arrow symbol, where current flows out of the device. Note: electrode naming for diodes is always based on the direction of the forward current (that of the arrow, in which the current flows "most easily"), even for types such as Zener diodes or solar cells where the current of interest is the reverse current. In vacuum tubes (including cathode-ray tubes) it is the negative terminal where electrons enter the device from the external circuit and proceed into the tube's near-vacuum, constituting a positive current flowing out of the device. The word was coined in 1834 from the Greek κάθοδος (kathodos), 'descent' or 'way down', by William Whewell, who had been consulted by Michael Faraday over some new names needed to complete a paper on the recently discovered process of electrolysis. In that paper Faraday explained that when an electrolytic cell is oriented so that electric current traverses the "decomposing body" (electrolyte) in a direction "from East to West, or, which will strengthen this help to the memory, that in which the sun appears to move", the cathode is where the current leaves the electrolyte, on the West side: "kata downwards, `odos a way ; the way which the sun sets". The use of 'West' to mean the 'out' direction (actually 'out' → 'West' → 'sunset' → 'down', i.e. 'out of view') may appear unnecessarily contrived. Previously, as related in the first reference cited above, Faraday had used the more straightforward term "exode" (the doorway where the current exits). His motivation for changing it to something meaning 'the West electrode' (other candidates had been "westode", "occiode" and "dysiode") was to make it immune to a possible later change in the direction convention for current, whose exact nature was not known at the time. The reference he used to this effect was the Earth's magnetic field direction, which at that time was believed to be invariant. He fundamentally defined his arbitrary orientation for the cell as being that in which the internal current would run parallel to and in the same direction as a hypothetical magnetizing current loop around the local line of latitude which would induce a magnetic dipole field oriented like the Earth's. This made the internal current East to West as previously mentioned, but in the event of a later convention change it would have become West to East, so that the West electrode would not have been the 'way out' any more. Therefore, "exode" would have become inappropriate, whereas "cathode" meaning 'West electrode' would have remained correct with respect to the unchanged direction of the actual phenomenon underlying the current, then unknown but, he thought, unambiguously defined by the magnetic reference. In retrospect the name change was unfortunate, not only because the Greek roots alone do not reveal the cathode's function any more, but more importantly because, as we now know, the Earth's magnetic field direction on which the "cathode" term is based is subject to reversals whereas the current direction convention on which the "exode" term was based has no reason to change in the future. Since the later discovery of the electron, an easier to remember, and more durably technically correct (although historically false), etymology has been suggested: cathode, from the Greek kathodos, 'way down', 'the way (down) into the cell (or other device) for electrons'. In chemistry, a cathode is the electrode of an electrochemical cell at which reduction occurs. The cathode can be negative like when the cell is electrolytic (where electrical energy provided to the cell is being used for decomposing chemical compounds); or positive as when the cell is galvanic (where chemical reactions are used for generating electrical energy). The cathode supplies electrons to the positively charged cations which flow to it from the electrolyte (even if the cell is galvanic, i.e., when the cathode is positive and therefore would be expected to repel the positively charged cations; this is due to electrode potential relative to the electrolyte solution being different for the anode and cathode metal/electrolyte systems in a galvanic cell). The cathodic current, in electrochemistry, is the flow of electrons from the cathode interface to a species in solution. The anodic current is the flow of electrons into the anode from a species in solution. In an electrolytic cell, the cathode is where the negative polarity is applied to drive the cell. Common results of reduction at the cathode are hydrogen gas or pure metal from metal ions. When discussing the relative reducing power of two redox agents, the couple for generating the more reducing species is said to be more "cathodic" with respect to the more easily reduced reagent. In a galvanic cell, the cathode is where the positive pole is connected to allow the circuit to be completed: as the anode of the galvanic cell gives off electrons, they return from the circuit into the cell through the cathode. When metal ions are reduced from ionic solution, they form a pure metal surface on the cathode. Items to be plated with pure metal are attached to and become part of the cathode in the electrolytic solution. In a vacuum tube or electronic vacuum system, the cathode is a metal surface which emits free electrons into the evacuated space. Since the electrons are attracted to the positive nuclei of the metal atoms, they normally stay inside the metal and require energy to leave it; this is called the work function of the metal. Cathodes are induced to emit electrons by several mechanisms: Cathodes can be divided into two types: A hot cathode is a cathode that is heated by a filament to produce electrons by thermionic emission. The filament is a thin wire of a refractory metal like tungsten heated red-hot by an electric current passing through it. Before the advent of transistors in the 1960s, virtually all electronic equipment used hot-cathode vacuum tubes. Today hot cathodes are used in vacuum tubes in radio transmitters and microwave ovens, to produce the electron beams in older cathode-ray tube (CRT) type televisions and computer monitors, in x-ray generators, electron microscopes, and fluorescent tubes. There are two types of hot cathodes: In order to improve electron emission, cathodes are treated with chemicals, usually compounds of metals with a low work function. Treated cathodes require less surface area, lower temperatures and less power to supply the same cathode current. The untreated tungsten filaments used in early tubes (called "bright emitters") had to be heated to 1400 °C (~2500 °F), white-hot, to produce sufficient thermionic emission for use, while modern coated cathodes produce far more electrons at a given temperature so they only have to be heated to 425–600 °C (~800–1100 °F) () There are two main types of treated cathodes: This is a cathode that is not heated by a filament. They may emit electrons by field electron emission, and in gas-filled tubes by secondary emission. Some examples are electrodes in neon lights, cold-cathode fluorescent lamps (CCFLs) used as backlights in laptops, thyratron tubes, and Crookes tubes. They do not necessarily operate at room temperature; in some devices the cathode is heated by the electron current flowing through it to a temperature at which thermionic emission occurs. For example, in some fluorescent tubes a momentary high voltage is applied to the electrodes to start the current through the tube; after starting the electrodes are heated enough by the current to keep emitting electrons to sustain the discharge. Cold cathodes may also emit electrons by photoelectric emission. These are often called photocathodes and are used in phototubes used in scientific instruments and image intensifier tubes used in night vision goggles. In a semiconductor diode, the cathode is the N–doped layer of the PN junction with a high density of free electrons due to doping, and an equal density of fixed positive charges, which are the dopants that have been thermally ionized. In the anode, the converse applies: It features a high density of free "holes" and consequently fixed negative dopants which have captured an electron (hence the origin of the holes). When P and N-doped layers are created adjacent to each other, diffusion ensures that electrons flow from high to low density areas: That is, from the N to the P side. They leave behind the fixed positively charged dopants near the junction. Similarly, holes diffuse from P to N leaving behind fixed negative ionised dopants near the junction. These layers of fixed positive and negative charges are collectively known as the depletion layer because they are depleted of free electrons and holes. The depletion layer at the junction is at the origin of the diode's rectifying properties. This is due to the resulting internal field and corresponding potential barrier which inhibit current flow in reverse applied bias which increases the internal depletion layer field. Conversely, they allow it in forwards applied bias where the applied bias reduces the built in potential barrier. Electrons which diffuse from the cathode into the P-doped layer, or anode, become what are termed "minority carriers" and tend to recombine there with the majority carriers, which are holes, on a timescale characteristic of the material which is the p-type minority carrier lifetime. Similarly, holes diffusing into the N-doped layer become minority carriers and tend to recombine with electrons. In equilibrium, with no applied bias, thermally assisted diffusion of electrons and holes in opposite directions across the depletion layer ensure a zero net current with electrons flowing from cathode to anode and recombining, and holes flowing from anode to cathode across the junction or depletion layer and recombining. Like a typical diode, there is a fixed anode and cathode in a Zener diode, but it will conduct current in the reverse direction (electrons flow from anode to cathode) if its breakdown voltage or "Zener voltage" is exceeded.	[ { "paragraph_id": 0, "text": "A cathode is the electrode from which a conventional current leaves a polarized electrical device. This definition can be recalled by using the mnemonic CCD for Cathode Current Departs. A conventional current describes the direction in which positive charges move. Electrons have a negative electrical charge, so the movement of electrons is opposite to that of the conventional current flow. Consequently, the mnemonic cathode current departs also means that electrons flow into the device's cathode from the external circuit. For example, the end of a household battery marked with a + (plus) is the cathode.", "title": "" }, { "paragraph_id": 1, "text": "The electrode through which conventional current flows the other way, into the device, is termed an anode.", "title": "" }, { "paragraph_id": 2, "text": "Conventional current flows from cathode to anode outside the cell or device (with electrons moving in the opposite direction), regardless of the cell or device type and operating mode.", "title": "Charge flow" }, { "paragraph_id": 3, "text": "Cathode polarity with respect to the anode can be positive or negative depending on how the device is being operated. Inside a device or a cell, positively charged cations always move towards the cathode and negatively charged anions move towards the anode, although cathode polarity depends on the device type, and can even vary according to the operating mode. Whether the cathode is negatively polarized (such as recharging a battery) or positively polarized (such as a battery in use), the cathode will draw electrons into it from outside, as well as attract positively charged cations from inside.", "title": "Charge flow" }, { "paragraph_id": 4, "text": "A battery or galvanic cell in use has a cathode that is the positive terminal since that is where conventional current flows out of the device. This outward current is carried internally by positive ions moving from the electrolyte to the positive cathode (chemical energy is responsible for this \"uphill\" motion). It is continued externally by electrons moving into the battery which constitutes positive current flowing outwards. For example, the Daniell galvanic cell's copper electrode is the positive terminal and the cathode.", "title": "Charge flow" }, { "paragraph_id": 5, "text": "A battery that is recharging or an electrolytic cell performing electrolysis has its cathode as the negative terminal, from which current exits the device and returns to the external generator as charge enters the battery/ cell. For example, reversing the current direction in a Daniell galvanic cell converts it into an electrolytic cell where the copper electrode is the positive terminal and also the anode.", "title": "Charge flow" }, { "paragraph_id": 6, "text": "In a diode, the cathode is the negative terminal at the pointed end of the arrow symbol, where current flows out of the device. Note: electrode naming for diodes is always based on the direction of the forward current (that of the arrow, in which the current flows \"most easily\"), even for types such as Zener diodes or solar cells where the current of interest is the reverse current. In vacuum tubes (including cathode-ray tubes) it is the negative terminal where electrons enter the device from the external circuit and proceed into the tube's near-vacuum, constituting a positive current flowing out of the device.", "title": "Charge flow" }, { "paragraph_id": 7, "text": "The word was coined in 1834 from the Greek κάθοδος (kathodos), 'descent' or 'way down', by William Whewell, who had been consulted by Michael Faraday over some new names needed to complete a paper on the recently discovered process of electrolysis. In that paper Faraday explained that when an electrolytic cell is oriented so that electric current traverses the \"decomposing body\" (electrolyte) in a direction \"from East to West, or, which will strengthen this help to the memory, that in which the sun appears to move\", the cathode is where the current leaves the electrolyte, on the West side: \"kata downwards, `odos a way ; the way which the sun sets\".", "title": "Etymology" }, { "paragraph_id": 8, "text": "The use of 'West' to mean the 'out' direction (actually 'out' → 'West' → 'sunset' → 'down', i.e. 'out of view') may appear unnecessarily contrived. Previously, as related in the first reference cited above, Faraday had used the more straightforward term \"exode\" (the doorway where the current exits). His motivation for changing it to something meaning 'the West electrode' (other candidates had been \"westode\", \"occiode\" and \"dysiode\") was to make it immune to a possible later change in the direction convention for current, whose exact nature was not known at the time. The reference he used to this effect was the Earth's magnetic field direction, which at that time was believed to be invariant. He fundamentally defined his arbitrary orientation for the cell as being that in which the internal current would run parallel to and in the same direction as a hypothetical magnetizing current loop around the local line of latitude which would induce a magnetic dipole field oriented like the Earth's. This made the internal current East to West as previously mentioned, but in the event of a later convention change it would have become West to East, so that the West electrode would not have been the 'way out' any more. Therefore, \"exode\" would have become inappropriate, whereas \"cathode\" meaning 'West electrode' would have remained correct with respect to the unchanged direction of the actual phenomenon underlying the current, then unknown but, he thought, unambiguously defined by the magnetic reference. In retrospect the name change was unfortunate, not only because the Greek roots alone do not reveal the cathode's function any more, but more importantly because, as we now know, the Earth's magnetic field direction on which the \"cathode\" term is based is subject to reversals whereas the current direction convention on which the \"exode\" term was based has no reason to change in the future.", "title": "Etymology" }, { "paragraph_id": 9, "text": "Since the later discovery of the electron, an easier to remember, and more durably technically correct (although historically false), etymology has been suggested: cathode, from the Greek kathodos, 'way down', 'the way (down) into the cell (or other device) for electrons'.", "title": "Etymology" }, { "paragraph_id": 10, "text": "In chemistry, a cathode is the electrode of an electrochemical cell at which reduction occurs. The cathode can be negative like when the cell is electrolytic (where electrical energy provided to the cell is being used for decomposing chemical compounds); or positive as when the cell is galvanic (where chemical reactions are used for generating electrical energy). The cathode supplies electrons to the positively charged cations which flow to it from the electrolyte (even if the cell is galvanic, i.e., when the cathode is positive and therefore would be expected to repel the positively charged cations; this is due to electrode potential relative to the electrolyte solution being different for the anode and cathode metal/electrolyte systems in a galvanic cell).", "title": "In chemistry" }, { "paragraph_id": 11, "text": "The cathodic current, in electrochemistry, is the flow of electrons from the cathode interface to a species in solution. The anodic current is the flow of electrons into the anode from a species in solution.", "title": "In chemistry" }, { "paragraph_id": 12, "text": "In an electrolytic cell, the cathode is where the negative polarity is applied to drive the cell. Common results of reduction at the cathode are hydrogen gas or pure metal from metal ions. When discussing the relative reducing power of two redox agents, the couple for generating the more reducing species is said to be more \"cathodic\" with respect to the more easily reduced reagent.", "title": "In chemistry" }, { "paragraph_id": 13, "text": "In a galvanic cell, the cathode is where the positive pole is connected to allow the circuit to be completed: as the anode of the galvanic cell gives off electrons, they return from the circuit into the cell through the cathode.", "title": "In chemistry" }, { "paragraph_id": 14, "text": "When metal ions are reduced from ionic solution, they form a pure metal surface on the cathode. Items to be plated with pure metal are attached to and become part of the cathode in the electrolytic solution.", "title": "In chemistry" }, { "paragraph_id": 15, "text": "In a vacuum tube or electronic vacuum system, the cathode is a metal surface which emits free electrons into the evacuated space. Since the electrons are attracted to the positive nuclei of the metal atoms, they normally stay inside the metal and require energy to leave it; this is called the work function of the metal. Cathodes are induced to emit electrons by several mechanisms:", "title": "In electronics" }, { "paragraph_id": 16, "text": "Cathodes can be divided into two types:", "title": "In electronics" }, { "paragraph_id": 17, "text": "A hot cathode is a cathode that is heated by a filament to produce electrons by thermionic emission. The filament is a thin wire of a refractory metal like tungsten heated red-hot by an electric current passing through it. Before the advent of transistors in the 1960s, virtually all electronic equipment used hot-cathode vacuum tubes. Today hot cathodes are used in vacuum tubes in radio transmitters and microwave ovens, to produce the electron beams in older cathode-ray tube (CRT) type televisions and computer monitors, in x-ray generators, electron microscopes, and fluorescent tubes.", "title": "In electronics" }, { "paragraph_id": 18, "text": "There are two types of hot cathodes:", "title": "In electronics" }, { "paragraph_id": 19, "text": "In order to improve electron emission, cathodes are treated with chemicals, usually compounds of metals with a low work function. Treated cathodes require less surface area, lower temperatures and less power to supply the same cathode current. The untreated tungsten filaments used in early tubes (called \"bright emitters\") had to be heated to 1400 °C (~2500 °F), white-hot, to produce sufficient thermionic emission for use, while modern coated cathodes produce far more electrons at a given temperature so they only have to be heated to 425–600 °C (~800–1100 °F) () There are two main types of treated cathodes:", "title": "In electronics" }, { "paragraph_id": 20, "text": "This is a cathode that is not heated by a filament. They may emit electrons by field electron emission, and in gas-filled tubes by secondary emission. Some examples are electrodes in neon lights, cold-cathode fluorescent lamps (CCFLs) used as backlights in laptops, thyratron tubes, and Crookes tubes. They do not necessarily operate at room temperature; in some devices the cathode is heated by the electron current flowing through it to a temperature at which thermionic emission occurs. For example, in some fluorescent tubes a momentary high voltage is applied to the electrodes to start the current through the tube; after starting the electrodes are heated enough by the current to keep emitting electrons to sustain the discharge.", "title": "In electronics" }, { "paragraph_id": 21, "text": "Cold cathodes may also emit electrons by photoelectric emission. These are often called photocathodes and are used in phototubes used in scientific instruments and image intensifier tubes used in night vision goggles.", "title": "In electronics" }, { "paragraph_id": 22, "text": "In a semiconductor diode, the cathode is the N–doped layer of the PN junction with a high density of free electrons due to doping, and an equal density of fixed positive charges, which are the dopants that have been thermally ionized. In the anode, the converse applies: It features a high density of free \"holes\" and consequently fixed negative dopants which have captured an electron (hence the origin of the holes).", "title": "In electronics" }, { "paragraph_id": 23, "text": "When P and N-doped layers are created adjacent to each other, diffusion ensures that electrons flow from high to low density areas: That is, from the N to the P side. They leave behind the fixed positively charged dopants near the junction. Similarly, holes diffuse from P to N leaving behind fixed negative ionised dopants near the junction. These layers of fixed positive and negative charges are collectively known as the depletion layer because they are depleted of free electrons and holes. The depletion layer at the junction is at the origin of the diode's rectifying properties. This is due to the resulting internal field and corresponding potential barrier which inhibit current flow in reverse applied bias which increases the internal depletion layer field. Conversely, they allow it in forwards applied bias where the applied bias reduces the built in potential barrier.", "title": "In electronics" }, { "paragraph_id": 24, "text": "Electrons which diffuse from the cathode into the P-doped layer, or anode, become what are termed \"minority carriers\" and tend to recombine there with the majority carriers, which are holes, on a timescale characteristic of the material which is the p-type minority carrier lifetime. Similarly, holes diffusing into the N-doped layer become minority carriers and tend to recombine with electrons. In equilibrium, with no applied bias, thermally assisted diffusion of electrons and holes in opposite directions across the depletion layer ensure a zero net current with electrons flowing from cathode to anode and recombining, and holes flowing from anode to cathode across the junction or depletion layer and recombining.", "title": "In electronics" }, { "paragraph_id": 25, "text": "Like a typical diode, there is a fixed anode and cathode in a Zener diode, but it will conduct current in the reverse direction (electrons flow from anode to cathode) if its breakdown voltage or \"Zener voltage\" is exceeded.", "title": "In electronics" } ]	A cathode is the electrode from which a conventional current leaves a polarized electrical device. This definition can be recalled by using the mnemonic CCD for Cathode Current Departs. A conventional current describes the direction in which positive charges move. Electrons have a negative electrical charge, so the movement of electrons is opposite to that of the conventional current flow. Consequently, the mnemonic cathode current departs also means that electrons flow into the device's cathode from the external circuit. For example, the end of a household battery marked with a + (plus) is the cathode. The electrode through which conventional current flows the other way, into the device, is termed an anode.	2001-10-30T10:47:45Z	2023-11-03T15:14:28Z	[ "Template:Div col", "Template:Webarchive", "Template:Cite journal", "Template:Reflist", "Template:Authority control", "Template:Cite encyclopedia", "Template:Cite web", "Template:Multiple image", "Template:Div col end", "Template:Cite book", "Template:Galvanic cells", "Template:Short description", "Template:Use dmy dates", "Template:Main" ]	https://en.wikipedia.org/wiki/Cathode
6,945	Chrominance	Chrominance (chroma or C for short) is the signal used in video systems to convey the color information of the picture (see YUV color model), separately from the accompanying luma signal (or Y' for short). Chrominance is usually represented as two color-difference components: U = B′ − Y′ (blue − luma) and V = R′ − Y′ (red − luma). Each of these difference components may have scale factors and offsets applied to it, as specified by the applicable video standard. In composite video signals, the U and V signals modulate a color subcarrier signal, and the result is referred to as the chrominance signal; the phase and amplitude of this modulated chrominance signal correspond approximately to the hue and saturation of the color. In digital-video and still-image color spaces such as Y′CbCr, the luma and chrominance components are digital sample values. Separating RGB color signals into luma and chrominance allows the bandwidth of each to be determined separately. Typically, the chrominance bandwidth is reduced in analog composite video by reducing the bandwidth of a modulated color subcarrier, and in digital systems by chroma subsampling. The idea of transmitting a color television signal with distinct luma and chrominance components originated with Georges Valensi, who patented the idea in 1938. Valensi's patent application described: The use of two channels, one transmitting the predominating color (signal T), and the other the mean brilliance (signal t) output from a single television transmitter to be received not only by color television receivers provided with the necessary more expensive equipment, but also by the ordinary type of television receiver which is more numerous and less expensive and which reproduces the pictures in black and white only. Previous schemes for color television systems, which were incompatible with existing monochrome receivers, transmitted RGB signals in various ways. In analog television, chrominance is encoded into a video signal using a subcarrier frequency. Depending on the video standard, the chrominance subcarrier may be either quadrature-amplitude-modulated (NTSC and PAL) or frequency-modulated (SECAM). In the PAL system, the color subcarrier is 4.43 MHz above the video carrier, while in the NTSC system it is 3.58 MHz above the video carrier. The NTSC and PAL standards are the most commonly used, although there are other video standards that employ different subcarrier frequencies. For example, PAL-M (Brazil) uses a 3.58 MHz subcarrier, and SECAM uses two different frequencies, 4.250 MHz and 4.40625 MHz above the video carrier. The presence of chrominance in a video signal is indicated by a color burst signal transmitted on the back porch, just after horizontal synchronization and before each line of video starts. If the color burst signal were visible on a television screen, it would appear as a vertical strip of a very dark olive color. In NTSC and PAL, hue is represented by a phase shift of the chrominance signal relative to the color burst, while saturation is determined by the amplitude of the subcarrier. In SECAM (R′ − Y′) and (B′ − Y′) signals are transmitted alternately and phase does not matter. Chrominance is represented by the U-V color plane in PAL and SECAM video signals, and by the I-Q color plane in NTSC. Digital video and digital still photography systems sometimes use a luma/chroma decomposition for improved compression. For example, when an ordinary RGB digital image is compressed via the JPEG standard, the RGB color space is first converted (by a rotation matrix) to a YCbCr color space, because the three components in that space have less correlation redundancy and because the chrominance components can then be subsampled by a factor of 2 or 4 to further compress the image. On decompression, the Y′CbCr space is rotated back to RGB.	[ { "paragraph_id": 0, "text": "Chrominance (chroma or C for short) is the signal used in video systems to convey the color information of the picture (see YUV color model), separately from the accompanying luma signal (or Y' for short). Chrominance is usually represented as two color-difference components: U = B′ − Y′ (blue − luma) and V = R′ − Y′ (red − luma). Each of these difference components may have scale factors and offsets applied to it, as specified by the applicable video standard.", "title": "" }, { "paragraph_id": 1, "text": "In composite video signals, the U and V signals modulate a color subcarrier signal, and the result is referred to as the chrominance signal; the phase and amplitude of this modulated chrominance signal correspond approximately to the hue and saturation of the color. In digital-video and still-image color spaces such as Y′CbCr, the luma and chrominance components are digital sample values.", "title": "" }, { "paragraph_id": 2, "text": "Separating RGB color signals into luma and chrominance allows the bandwidth of each to be determined separately. Typically, the chrominance bandwidth is reduced in analog composite video by reducing the bandwidth of a modulated color subcarrier, and in digital systems by chroma subsampling.", "title": "" }, { "paragraph_id": 3, "text": "The idea of transmitting a color television signal with distinct luma and chrominance components originated with Georges Valensi, who patented the idea in 1938. Valensi's patent application described:", "title": "History" }, { "paragraph_id": 4, "text": "The use of two channels, one transmitting the predominating color (signal T), and the other the mean brilliance (signal t) output from a single television transmitter to be received not only by color television receivers provided with the necessary more expensive equipment, but also by the ordinary type of television receiver which is more numerous and less expensive and which reproduces the pictures in black and white only.", "title": "History" }, { "paragraph_id": 5, "text": "Previous schemes for color television systems, which were incompatible with existing monochrome receivers, transmitted RGB signals in various ways.", "title": "History" }, { "paragraph_id": 6, "text": "In analog television, chrominance is encoded into a video signal using a subcarrier frequency. Depending on the video standard, the chrominance subcarrier may be either quadrature-amplitude-modulated (NTSC and PAL) or frequency-modulated (SECAM).", "title": "Television standards" }, { "paragraph_id": 7, "text": "In the PAL system, the color subcarrier is 4.43 MHz above the video carrier, while in the NTSC system it is 3.58 MHz above the video carrier. The NTSC and PAL standards are the most commonly used, although there are other video standards that employ different subcarrier frequencies. For example, PAL-M (Brazil) uses a 3.58 MHz subcarrier, and SECAM uses two different frequencies, 4.250 MHz and 4.40625 MHz above the video carrier.", "title": "Television standards" }, { "paragraph_id": 8, "text": "The presence of chrominance in a video signal is indicated by a color burst signal transmitted on the back porch, just after horizontal synchronization and before each line of video starts. If the color burst signal were visible on a television screen, it would appear as a vertical strip of a very dark olive color. In NTSC and PAL, hue is represented by a phase shift of the chrominance signal relative to the color burst, while saturation is determined by the amplitude of the subcarrier. In SECAM (R′ − Y′) and (B′ − Y′) signals are transmitted alternately and phase does not matter.", "title": "Television standards" }, { "paragraph_id": 9, "text": "Chrominance is represented by the U-V color plane in PAL and SECAM video signals, and by the I-Q color plane in NTSC.", "title": "Television standards" }, { "paragraph_id": 10, "text": "Digital video and digital still photography systems sometimes use a luma/chroma decomposition for improved compression. For example, when an ordinary RGB digital image is compressed via the JPEG standard, the RGB color space is first converted (by a rotation matrix) to a YCbCr color space, because the three components in that space have less correlation redundancy and because the chrominance components can then be subsampled by a factor of 2 or 4 to further compress the image. On decompression, the Y′CbCr space is rotated back to RGB.", "title": "Digital systems" } ]	Chrominance is the signal used in video systems to convey the color information of the picture, separately from the accompanying luma signal. Chrominance is usually represented as two color-difference components: U = B′ − Y′ (blue − luma) and V = R′ − Y′ (red − luma). Each of these difference components may have scale factors and offsets applied to it, as specified by the applicable video standard. In composite video signals, the U and V signals modulate a color subcarrier signal, and the result is referred to as the chrominance signal; the phase and amplitude of this modulated chrominance signal correspond approximately to the hue and saturation of the color. In digital-video and still-image color spaces such as Y′CbCr, the luma and chrominance components are digital sample values. Separating RGB color signals into luma and chrominance allows the bandwidth of each to be determined separately. Typically, the chrominance bandwidth is reduced in analog composite video by reducing the bandwidth of a modulated color subcarrier, and in digital systems by chroma subsampling.	2002-02-25T15:43:11Z	2023-12-13T23:13:58Z	[ "Template:Color topics", "Template:Short description", "Template:One source", "Template:Reflist", "Template:Analogue TV transmitter topics" ]	https://en.wikipedia.org/wiki/Chrominance
6,946	Chirality (disambiguation)	Chirality (handedness) is a property of asymmetry. Chirality may also refer to:	[ { "paragraph_id": 0, "text": "Chirality (handedness) is a property of asymmetry.", "title": "" }, { "paragraph_id": 1, "text": "Chirality may also refer to:", "title": "" } ]	Chirality (handedness) is a property of asymmetry. Chirality may also refer to: Chirality (chemistry), a property of molecules having a non-superimposable mirror image Chirality (electromagnetism), an electromagnetic propagation in chiral media Chirality (mathematics), the property of a figure not being identical to its mirror image Chirality (physics), when a phenomenon is not identical to its mirror image Chirality (journal), an academic journal dealing with chiral chemistry Chirality (manga), a 4-volume yuri manga series written and illustrated by author Satoshi Urushihara Chirality (album), a 2014 solo piano album by American pianist John Burke		2019-03-12T19:46:56Z	[ "Template:Disambiguation", "Template:Wiktionary" ]	https://en.wikipedia.org/wiki/Chirality_(disambiguation)
6,947	Campus	A campus is by tradition the land on which a college or university and related institutional buildings are situated. Usually a college campus includes libraries, lecture halls, residence halls, student centers or dining halls, and park-like settings. A modern campus is a collection of buildings and grounds that belong to a given institution, either academic or non-academic. Examples include the Googleplex and the Apple Campus. The word derives from a Latin word for "field" and was first used to describe the large field adjacent Nassau Hall of the College of New Jersey (now Princeton University) in 1774. The field separated Princeton from the small nearby town. Some other American colleges later adopted the word to describe individual fields at their own institutions, but "campus" did not yet describe the whole university property. A school might have one space called a campus, another called a field, and still another called a yard. The tradition of a campus began with the medieval European universities where the students and teachers lived and worked together in a cloistered environment. The notion of the importance of the setting to academic life later migrated to America, and early colonial educational institutions were based on the Scottish and English collegiate system. The campus evolved from the cloistered model in Europe to a diverse set of independent styles in the United States. Early colonial colleges were all built in proprietary styles, with some contained in single buildings, such as the campus of Princeton University or arranged in a version of the cloister reflecting American values, such as Harvard's. Both the campus designs and the architecture of colleges throughout the country have evolved in response to trends in the broader world, with most representing several different contemporary and historical styles and arrangements. The meaning expanded to include the whole institutional property during the 20th century, with the old meaning persisting into the 1950s in some places. Sometimes the lands on which company office buildings sit, along with the buildings, are called campuses. The Microsoft Campus in Redmond, Washington, is a good example of this usage. Hospitals and even airports sometimes use the term to describe the territory of their respective facilities. The word campus has also been applied to European universities, although some such institutions (in particular, "ancient" universities such as Bologna, Padua, Oxford and Cambridge) are characterized by ownership of individual buildings in university town-like urban settings rather than sprawling park-like lawns in which buildings are placed.	[ { "paragraph_id": 0, "text": "A campus is by tradition the land on which a college or university and related institutional buildings are situated. Usually a college campus includes libraries, lecture halls, residence halls, student centers or dining halls, and park-like settings.", "title": "" }, { "paragraph_id": 1, "text": "A modern campus is a collection of buildings and grounds that belong to a given institution, either academic or non-academic. Examples include the Googleplex and the Apple Campus.", "title": "" }, { "paragraph_id": 2, "text": "The word derives from a Latin word for \"field\" and was first used to describe the large field adjacent Nassau Hall of the College of New Jersey (now Princeton University) in 1774. The field separated Princeton from the small nearby town.", "title": "Etymology" }, { "paragraph_id": 3, "text": "Some other American colleges later adopted the word to describe individual fields at their own institutions, but \"campus\" did not yet describe the whole university property. A school might have one space called a campus, another called a field, and still another called a yard.", "title": "Etymology" }, { "paragraph_id": 4, "text": "The tradition of a campus began with the medieval European universities where the students and teachers lived and worked together in a cloistered environment. The notion of the importance of the setting to academic life later migrated to America, and early colonial educational institutions were based on the Scottish and English collegiate system.", "title": "History" }, { "paragraph_id": 5, "text": "The campus evolved from the cloistered model in Europe to a diverse set of independent styles in the United States. Early colonial colleges were all built in proprietary styles, with some contained in single buildings, such as the campus of Princeton University or arranged in a version of the cloister reflecting American values, such as Harvard's. Both the campus designs and the architecture of colleges throughout the country have evolved in response to trends in the broader world, with most representing several different contemporary and historical styles and arrangements.", "title": "History" }, { "paragraph_id": 6, "text": "The meaning expanded to include the whole institutional property during the 20th century, with the old meaning persisting into the 1950s in some places.", "title": "Uses" }, { "paragraph_id": 7, "text": "Sometimes the lands on which company office buildings sit, along with the buildings, are called campuses. The Microsoft Campus in Redmond, Washington, is a good example of this usage. Hospitals and even airports sometimes use the term to describe the territory of their respective facilities.", "title": "Uses" }, { "paragraph_id": 8, "text": "The word campus has also been applied to European universities, although some such institutions (in particular, \"ancient\" universities such as Bologna, Padua, Oxford and Cambridge) are characterized by ownership of individual buildings in university town-like urban settings rather than sprawling park-like lawns in which buildings are placed.", "title": "Uses" } ]	A campus is by tradition the land on which a college or university and related institutional buildings are situated. Usually a college campus includes libraries, lecture halls, residence halls, student centers or dining halls, and park-like settings. A modern campus is a collection of buildings and grounds that belong to a given institution, either academic or non-academic. Examples include the Googleplex and the Apple Campus.	2002-02-11T19:42:40Z	2023-11-02T03:07:50Z	[ "Template:Short description", "Template:Other uses", "Template:Lang", "Template:Reflist", "Template:Cite dictionary", "Template:Cite book", "Template:Wiktionary-inline", "Template:Commons category-inline", "Template:Developments", "Template:Authority control" ]	https://en.wikipedia.org/wiki/Campus
6,948	Crossbow	A crossbow is a ranged weapon using an elastic launching device consisting of a bow-like assembly called a prod, mounted horizontally on a main frame called a tiller, which is hand-held in a similar fashion to the stock of a long gun. Crossbows shoot arrow-like projectiles called bolts or quarrels. A person who shoots crossbow is called a crossbowman or an arbalist (after the arbalest, a European crossbow variant used during the 12th century). Crossbows and bows use the same launch principle, but an archer using a longbow must maintain its draw by pitching the bowstring with fingers, pulling it back with arm and back muscles, and then holding that form while aiming, which demands significant physical strength. A crossbow has a locking mechanism to maintain the draw, limiting the shooter's exertion to pulling the string into the lock and then releasing the shot by depressing a trigger. This enables a crossbowman to handle more draw weight, and to hold it with significantly less physical strain, thus potentially achieving better precision. Crossbows are usually drawn by direct pulling, but windlass-like mechanisms requiring less force were sometimes used. The earliest known crossbows were made in the first millennium BC, as early as the 7th century BC in ancient China, and as early as the 1st century AD in Greece (as the gastraphetes). Crossbows brought about a major shift in the role of projectile weaponry in wars, such as during Qin's unification wars and later the Han campaigns against northern nomads and western states. The medieval European crossbow was called by many names, including "crossbow" itself; most of these names derived from the word ballista, an ancient Greek torsion siege engine similar in appearance but different in design principle. In modern times, firearms have largely supplanted bows and crossbows as weapons of war, but crossbows remain widely used for competitive shooting sports and hunting, and for relatively silent shooting. A crossbowman or crossbow-maker is sometimes called an arbalista, arbalist, or arbalest. The last two are also used to refer to the crossbow. Arrow, bolt, and quarrel are all suitable terms for crossbow projectiles. The lath, also called the prod, is the bow of the crossbow. According to W.F. Peterson, the prod came into usage in the 19th century as a result of mistranslating rodd in a 16th-century list of crossbow effects. The stock is the wooden body on which the bow is mounted, although the medieval tiller is also used. The lock refers to the release mechanism, including the string, sears, trigger lever, and housing. A crossbow is essentially a bow mounted on an elongated frame (called a tiller or stock) with a built-in mechanism that holds the drawn bow string, as well as a trigger mechanism, which is used to release the string. The Chinese trigger was a mechanism typically composed of three cast bronze pieces housed inside a hollow bronze enclosure. The entire mechanism is then dropped into a carved slot within the tiller and secured together by two bronze rods. The string catch (nut) is shaped like a "J" because it usually has a tall erect rear spine that protrudes above the housing, which serves the function of both a cocking lever (by pushing the drawn string onto it) and a primitive rear sight. It is held stationary against tension by the second piece, which is shaped like a flattened "C" and acts as the sear. The sear cannot move as it is trapped by the third piece, i.e. the actual trigger blade, which hangs vertically below the enclosure and catches the sear via a notch. The two bearing surfaces between the three trigger pieces each offers a mechanical advantage, which allow for handling significant draw weights with a much smaller pull weight. During shooting, the user will hold the crossbow at eye level by a vertical handle and aim along the arrow using the sighting spine for elevation, similar to how a modern rifleman shoots with iron sights. When the trigger blade is pulled, its notch disengages from the sear and allows the latter to drop downwards, which in turn frees up the nuts to pivot forward and release the bowstring. The nu (弩) [crossbow] is so called because it spreads abroad an aura of rage [nù] (怒) . Its stock is like the arm of a man, therefore it is called bi (臂). That which hooks the bowstring is called ya (牙), for indeed it is like teeth. The part round about the teeth [i.e. the housing box] is called the guo (郭) ["city wall"], since it surrounds the gui (規) [lug] of the teeth [i.e. the locking nut]. Within [and below] there is the xuan dao (懸刀) ["hanging knife", i.e. the trigger blade] so called because it looks like one. The whole assembly is called ji (機)["machine" or "mechanism"], for it is just as ingenious as the loom. The earliest European designs featured a transverse slot in the top surface of the frame, down into which the string was placed. To shoot this design, a vertical rod is thrust up through a hole in the bottom of the notch, forcing the string out. This rod is usually attached perpendicular to a rear-facing lever called a tickler. A later design implemented a rolling cylindrical pawl called a nut to retain the string. This nut has a perpendicular centre slot for the bolt, and an intersecting axial slot for the string, along with a lower face or slot against which the internal trigger sits. They often also have some form of strengthening internal sear or trigger face, usually of metal. These roller nuts were either free-floating in their close-fitting hole across the stock, tied in with a binding of sinew or other strong cording; or mounted on a metal axle or pins. Removable or integral plates of wood, ivory, or metal on the sides of the stock kept the nut in place laterally. Nuts were made of antler, bone, or metal. Bows could be kept taut and ready to shoot for some time with little physical straining, allowing crossbowmen to aim better without fatiguing. Chinese crossbow bows were made of composite material from the start. European crossbows from the 10th to 12th centuries used wood for the bow, also called the prod or lath, which tended to be ash or yew. Composite bows started appearing in Europe during the 13th century and could be made from layers of different material, often wood, horn, and sinew glued together and bound with animal tendon. These composite bows made of several layers are much stronger and more efficient in releasing energy than simple wooden bows. As steel became more widely available in Europe around the 14th century, steel prods came into use. Traditionally, the prod was often lashed to the stock with rope, whipcord, or other strong cording. This is called the bridle The Chinese used winches for large crossbows mounted on fortifications or wagons, known as "bedded crossbows" (床弩). Winches may have been used for handheld crossbows during the Han dynasty (202 BC–9 AD, 25–220 AD), but there is only one known depiction of it. The 11th century Chinese military text Wujing Zongyao mentions types of crossbows using winch mechanisms, but it is not known if these were actually handheld crossbows or mounted crossbows. Another drawing method involved the shooters sitting on the ground, and using the combined strength of leg, waist, back and arm muscles to help span much heavier crossbows, which were aptly called "waist-spun crossbows" (腰張弩). During the medieval era, both Chinese and European crossbows used stirrups as well as belt hooks. In the 13th century, European crossbows started using winches, and from the 14th century an assortment of spanning mechanisms such as winch pulleys, cord pulleys, gaffles (such as gaffe levers, goat's foot levers, and rarer internal lever-action mechanisms), cranequins, and even screws. The smallest crossbows are pistol crossbows. Others are simple long stocks with the crossbow mounted on them. These could be shot from under the arm. The next step in development was stocks of the shape that would later be used for firearms, which allowed better aiming. The arbalest was a heavy crossbow that required special systems for pulling the sinew via windlasses. For siege warfare, the size of crossbows was further increased to hurl large projectiles, such as rocks, at fortifications. The required crossbows needed a massive base frame and powerful windlass devices. The arrow-like projectiles of a crossbow are called bolts or quarrels. These are usually much shorter than arrows but can be several times heavier. There is an optimum weight for bolts to achieve maximum kinetic energy, which varies depending on the strength and characteristics of the crossbow, but most could pass through common mail. Crossbow bolts can be fitted with a variety of heads, some with sickle-shaped heads to cut rope or rigging; but the most common today is a four-sided point called a quarrel. A highly specialized type of bolt is employed to collect blubber biopsy samples used in biology research. Even relatively small differences in arrow weight can have a considerable impact on its flight trajectory and drop. Bullet-shooting crossbows are modified crossbows that use bullets or stones as projectiles. The ancient Chinese crossbow often included a metal (i.e. bronze or steel) grid serving as iron sights. Modern crossbow sights often use similar technology to modern firearm sights, such as red dot sights and telescopic sights. Many crossbow scopes feature multiple crosshairs to compensate for the significant effects of gravity over different ranges. In most cases, a newly bought crossbow will need to be sighted for accurate shooting. A major cause of the sound of shooting a crossbow is vibration of various components. Crossbow silencers are multiple components placed on high vibration parts, such as the string and limbs, to dampen vibration and suppress the sound of loosing the bolt. In terms of archaeological evidence, crossbow locks made of cast bronze have been found in China dating to around 650 BC. They have also been found in Tombs 3 and 12 at Qufu, Shandong, previously the capital of Lu, and date to the 6th century BC. Bronze crossbow bolts dating from the mid-5th century BC have been found at a Chu burial site in Yutaishan, Jiangling County, Hubei Province. Other early finds of crossbows were discovered in Tomb 138 at Saobatang, Hunan Province, and date to the mid-4th century BC. It is possible that these early crossbows used spherical pellets for ammunition. A Western Han mathematician and music theorist, Jing Fang (78–37 BC), compared the moon to the shape of a round crossbow bullet. The Zhuangzi also mentions crossbow bullets. The earliest Chinese documents mentioning a crossbow were texts from the 4th to 3rd centuries BC attributed to the followers of Mozi. This source refers to the use of a giant crossbow between the 6th and 5th centuries BC, corresponding to the late Spring and Autumn period. Sun Tzu's The Art of War (first appearance dated between 500 BC to 300 BC) refers to the characteristics and use of crossbows in chapters 5 and 12 respectively, and compares a drawn crossbow to "might". The Huainanzi advises its readers not to use crossbows in marshland where the surface is soft and it is hard to arm the crossbow with the foot. The Records of the Grand Historian, completed in 94 BC, mentions that Sun Bin defeated Pang Juan by ambushing him with a battalion of crossbowmen at the Battle of Maling in 342 BC. The Book of Han, finished 111 AD, lists two military treatises on crossbows. Handheld crossbows with complex bronze trigger mechanisms have also been found with the Terracotta Army in the tomb of Qin Shi Huang (r. 221–210 BC) that are similar to specimens from the subsequent Han dynasty (202 BC–220 AD), while crossbowmen described in the Qin and Han dynasty learned drill formations, some were even mounted as charioteers and cavalry units, and Han dynasty writers attributed the success of numerous battles against the Xiongnu and Western Regions city-states to massed crossbow volleys. The bronze triggers were designed in such a way that they were able to store a large amount of energy within the bow when drawn but was easily shot with little resistance and recoil when the trigger was pulled. The trigger nut also had a long vertical spine that could be used like a primitive rear sight for elevation adjustment, which allowed precision shooting over longer distances. The Qin/Han-era crossbow was also an early example of modular design, as the bronze trigger components were also mass-produced with relative precise tolerances so that the parts were interchangeable between different crossbows. The trigger mechanism from one crossbow can be installed into another simply by dropping into a tiller slot of the same specifications and secured with dowel pins. Some crossbow designs were also found to be fitted with bronze buttplates and trigger guard. It is clear from surviving inventory lists in Gansu and Xinjiang that the crossbow was greatly favored by the Han dynasty. For example, in one batch of slips there are only two mentions of bows, but thirty mentions of crossbows. Crossbows were mass-produced in state armories with designs improving as time went on, such as the use of a mulberry wood stock and brass; a crossbow in 1068 could pierce a tree at 140 paces. Crossbows were used in numbers as large as 50,000 starting from the Qin dynasty and upwards of several hundred thousand during the Han. According to one authority, the crossbow had become "nothing less than the standard weapon of the Han armies", by the second century BC. Han soldiers were required to pull a crossbow with a draw weight equivalent of 76 kg (168 pounds) to qualify as an entry level crossbowman, while it was claimed that a few elite troops were capable of bending crossbows with a draw-weight in excess of 750lb by the hands-and-feet method. After the Han dynasty, the crossbow lost favor during the Six Dynasties, until it experienced a mild resurgence during the Tang dynasty, under which the ideal expeditionary army of 20,000 included 2,200 archers and 2,000 crossbowmen. Li Jing and Li Quan prescribed 20 percent of the infantry to be armed with crossbows. During the Song dynasty, the crossbow received a huge upsurge in military usage, and often overshadowed the bow 2 to 1 in numbers. During this time period, a stirrup was added for ease of loading. The Song government attempted to restrict the public use of crossbows and sought ways to keep both body armor and crossbows out of civilian ownership. Despite the ban on certain types of crossbows, the weapon experienced an upsurge in civilian usage as both a hunting weapon and pastime. The "romantic young people from rich families, and others who had nothing particular to do" formed crossbow-shooting clubs as a way to pass time. During the late Ming dynasty, no crossbows were mentioned to have been produced in the three-year period from 1619 to 1622. With 21,188,366 taels, the Ming manufactured 25,134 cannons, 8,252 small guns, 6,425 muskets, 4,090 culverins, 98,547 polearms and swords, 26,214 great "horse decapitator" swords, 42,800 bows, 1,000 great axes, 2,284,000 arrows, 180,000 fire arrows, 64,000 bow strings, and hundreds of transport carts. Military crossbows were armed by treading, or basically placing the feet on the bow stave and drawing it using one's arms and back muscles. During the Song dynasty, stirrups were added for ease of drawing and to mitigate damage to the bow. Alternatively, the bow could also be drawn by a belt claw attached to the waist, but this was done lying down, as was the case for all large crossbows. Winch-drawing was used for the large mounted crossbows as seen below, but evidence for its use in Chinese hand-crossbows is scant. There were also other sorts of crossbows, such as the repeating crossbow, multi-shot crossbow, and larger field artillery crossbows. Around the third century BC, King An Dương of Âu Lạc (modern-day northern Vietnam) and (modern-day southern China) commissioned a man named Cao Lỗ (or Cao Thông) to construct a crossbow and christened it "Saintly Crossbow of the Supernaturally Luminous Golden Claw" (nỏ thần), which could kill 300 men in one shot. According to historian Keith Taylor, the crossbow, along with the word for it, seems to have been introduced into China from Austroasiatic peoples in the south around the fourth century BC. However, this is contradicted by crossbow locks found in ancient Chinese Zhou dynasty tombs dating to the 600s BC. In 315 AD, Nu Wen taught the Chams how to build fortifications and use crossbows. The Chams would later give the Chinese crossbows as presents on at least one occasion. Crossbow technology for crossbows with more than one prod was transferred from the Chinese to Champa, which Champa used in its invasion of the Khmer Empire's Angkor in 1177. When the Chams sacked Angkor they used the Chinese siege crossbow. The Chinese taught the Chams how to use crossbows and mounted archery Crossbows and archery in 1171. The Khmer also had double-bow crossbows mounted on elephants, which Michel Jacq-Hergoualc'h suggests were elements of Cham mercenaries in Jayavarman VII's army. The native Montagnards of Vietnam's Central Highlands were also known to have used crossbows, as both a tool for hunting, and later an effective weapon against the Viet Cong during the Vietnam War. Montagnard fighters armed with crossbows proved a highly valuable asset to the US Special Forces operating in Vietnam, and it was not uncommon for the Green Berets to integrate Montagnard crossbowmen into their strike teams. The earliest crossbow-like weapons in Europe probably emerged around the late 5th century BC when the gastraphetes, an ancient Greek crossbow, appeared. The name means "belly-bow"; the concave withdrawal rest at one end of the stock was placed against the belly of the operator, and he could press it to withdraw the slider before attaching a string to the trigger and loading the bolt; this could store more energy than Greek bows. The device was described by the Greek author Heron of Alexandria in his Belopoeica ("On Catapult-making"), which draws on an earlier account of his compatriot engineer Ctesibius (fl. 285–222 BC). According to Heron, the gastraphetes was the forerunner of the later catapult, which places its invention some unknown time prior to 399 BC. The gastraphetes was a crossbow mounted on a stock divided into a lower and upper section. The lower was a case fixed to the bow, and the upper was a slider which had the same dimensions as the case. It was used in the Siege of Motya in 397 BC. This was a key Carthaginian stronghold in Sicily, as described in the 1st century AD by Heron of Alexandria in his book Belopoeica. There were also other arrow-shooting machines such as the larger ballista and smaller Scorpio from around 338 BC, but these are torsion catapults and are not considered crossbows. Arrow-shooting machines (katapeltai) are briefly mentioned by Aeneas Tacticus in his treatise on siegecraft written around 350 BC. An Athenian inventory from 330 to 329 BC includes catapults bolts with heads and flights. Arrow-shooting machines in action are reported from Philip II's siege of Perinthos in Thrace in 340 BC. At the same time, Greek fortifications began to feature high towers with shuttered windows in the top, presumably to house anti-personnel arrow shooters, as in Aigosthena. The late 4th century author Vegetius, in his De Re Militari, describes arcubalistarii (crossbowmen) working together with archers and artillerymen. However, it is disputed whether arcuballistas were crossbows or torsion-powered weapons. The idea that the arcuballista was a crossbow is due to Vegetius referring separately to it and the manuballista, which was torsion powered. Therefore, if the arcuballista was not like the manuballista, it may have been a crossbow. According to Vegetius, these were well-known devices, and hence he did not describe them in depth. Joseph Needham argues against the existence of Roman crossbowmen: On the textual side, there is almost nothing but passing references in the military historian Vegetius (fl. + 386) to 'manuballistae' and 'arcuballistae' which he said he must decline to describe as they were so well known. His decision was highly regrettable, as no other author of the time makes any mention of them at all. Perhaps the best supposition is that the crossbow was primarily known in late European antiquity as a hunting weapon, and received only local use in certain units of the armies of Theodosius I, with which Vegetius happened to be acquainted. On the other hand, Arrian's earlier Ars Tactica, from about 136 AD, also mentions 'missiles shot not from a bow but from a machine' and that this machine was used on horseback while in full gallop. It is presumed that this was a crossbow. The only pictorial evidence of Roman arcuballistas comes from sculptural reliefs in Roman Gaul depicting them in hunting scenes. These are aesthetically similar to both the Greek and Chinese crossbows, but it is not clear what kind of release mechanism they used. Archaeological evidence suggests they were similar to the rolling nut mechanism of medieval Europe. There are essentially no references to the crossbow in Europe from the 5th until the 10th century. There is however a depiction of a crossbow as a hunting weapon on four Pictish stones from early medieval Scotland (6th to 9th centuries): St. Vigeans no. 1, Glenferness, Shandwick, and Meigle. The crossbow reappeared again in 947 as a French weapon during the siege of Senlis and again in 984 at the siege of Verdun. Crossbows were used at the battle of Hastings in 1066, and by the 12th century they had become common battlefield weapons. The earliest extant European crossbow remains were found at Lake Paladru, dated to the 11th century. The crossbow superseded hand bows in many European armies during the 12th century, except in England, where the longbow was more popular. Later crossbows (sometimes referred to as arbalests), utilizing all-steel prods, were able to achieve power close (and sometime superior) to longbows, but were more expensive to produce and slower to reload because they required the aid of mechanical devices such as the cranequin or windlass to draw back their extremely heavy bows. Usually these could only shoot two bolts per minute versus twelve or more with a skilled archer, often necessitating the use of a pavise (shield) to protect the operator from enemy fire. Along with polearm weapons made from farming equipment, the crossbow was also a weapon of choice for insurgent peasants such as the Taborites. Genoese crossbowmen were famous mercenaries hired throughout medieval Europe, while the crossbow also played an important role in anti-personnel defense of ships. Crossbows were eventually replaced in warfare by gunpowder weapons. Early hand cannons had slower rates of fire and much worse accuracy than contemporary crossbows, but the arquebus (which proliferated in the mid to late 15th century) matched crossbows' rate of fire while being far more powerful. The Battle of Cerignola in 1503 was largely won by Spain through the use of matchlock arquebuses, marking the first time a major battle was won through the use of hand-held firearms. Later, similar competing tactics would feature harquebusiers or musketeers in formation with pikemen, pitted against cavalry firing pistols or carbines. While the military crossbow had largely been supplanted by firearms on the battlefield by 1525, the sporting crossbow in various forms remained a popular hunting weapon in Europe until the eighteenth century. Crossbows saw irregular use throughout the rest of the 16th century; for example, Maria Pita's husband was killed by a crossbowman of the English Armada in 1589. There are no references to crossbows in Islamic texts earlier than the 14th century. Arabs in general were averse to the crossbow and considered it a foreign weapon. They called it qaus al-rijl (foot-drawn bow), qaus al-zanbūrak (bolt bow) and qaus al-faranjīyah (Frankish bow). Although Muslims did have crossbows, there seems to be a split between eastern and western types. Muslims in Spain used the typical European trigger, while eastern Muslim crossbows had a more complex trigger mechanism. Mamluk cavalry used crossbows. Oyumi were ancient Japanese artillery pieces that first appeared in the seventh century (during the Asuka period). According to Japanese records, the Oyumi was different from the handheld crossbow also in use during the same time period. A quote from a seventh-century source seems to suggest that the Oyumi may have able to fire multiple arrows at once: "the Oyumi were lined up and fired at random, the arrows fell like rain". A ninth-century Japanese artisan named Shimaki no Fubito claimed to have improved on a version of the weapon used by the Chinese; his version could rotate and fire projectiles in multiple directions. The last recorded use of the Oyumi was in 1189. In West and Central Africa, crossbows served as a scouting weapon and for hunting, with African slaves bringing this technology to natives in America. In the Southern United States, the crossbow was used for hunting and warfare when firearms or gunpowder were unavailable because of economic hardships or isolation. In the north of Northern America, light hunting crossbows were traditionally used by the Inuit. These are technologically similar to the African-derived crossbows, but have a different route of influence. Spanish conquistadors continued to use crossbows in the Americas long after they were replaced in European battlefields by firearms. Only in the 1570s did firearms become completely dominant among the Spanish in the Americas. The French and the British used a crossbow-like Sauterelle (French for grasshopper) in World War I. It was lighter and more portable than the Leach Trench Catapult, but less powerful. It weighed 24 kg (53 pounds) and could throw an F1 grenade or Mills bomb 110–140 m (120–150 yards). The Sauterelle replaced the Leach Catapult in British service and was in turn replaced in 1916 by the 2-inch Medium Trench Mortar and Stokes mortar. Crossbows are used for shooting sports and bowhunting in modern archery and for blubber biopsy samples in scientific research. In some countries such as Canada, they may be less heavily regulated than firearms, and thus more popular for hunting; some jurisdictions have bow and/or crossbow only seasons. Crossbows are no longer used in battles, but there are still some military applications. For example, there is an undated photograph of Peruvian soldiers equipped with crossbows and rope to establish a zip-line in difficult terrain. In Brazil the CIGS (Jungle Warfare Training Center) also trains soldiers in the use of crossbows. In the US, SAA International Ltd manufacture a 150-foot-pound (200 J) crossbow-launched version of the U.S. Army type classified Launched Grapnel Hook (LGH), among other mine countermeasure solutions designed for the Middle Eastern theatre. It was evaluated as successful in Cambodia and Bosnia. It is used to probe for and detonate tripwire-initiated mines and booby traps at up to 50 m (55 yards). The concept is similar to the LGH device originally fired from a rifle, as a plastic retrieval line is attached. Reusable up to 20 times, the line can be reeled back in without exposing the user. The device is of particular use in tactical situations where noise discipline is important. In Europe, Barnett International sold crossbows to Serbian forces which, according to The Guardian, were later used "in ambushes and as a counter-sniper weapon" against the Kosovo Liberation Army during the Kosovo War in the areas of Pec and Djakovica, south west of Kosovo. Whitehall launched an investigation, though the Department of Trade and Industry established that not being "on the military list", crossbows were not covered by export restrictions. Paul Beaver of Jane's Defence Publications commented that, "They are not only a silent killer, they also have a psychological effect". On 15 February 2008, Serbian Minister of Defence Dragan Sutanovac was pictured testing a Barnett crossbow during a public exercise of the Serbian Army's Special Forces in Nis, 200 km (120 miles) south of Belgrade. Special forces in both Greece and Turkey also continue to employ the crossbow. Spain's Green Berets still use the crossbow as well. In Asia, some Chinese armed forces use crossbows, including the special force Snow Leopard Commando Unit of the People's Armed Police and the People's Liberation Army. One reason for this is the crossbow's ability to stop persons carrying explosives without risk of causing detonation. During the Xinjiang riots of July 2009, crossbows were used alongside modern military hardware to quell protests. The Indian Navy's Marine Commando Force were equipped until the late 1980s with crossbows with cyanide-tipped bolts, as an alternative to suppressed handguns. With a crossbow, archers could release a draw force far in excess of what they could have handled with a bow. Furthermore, the crossbow could hold the tension indefinitely, whereas even the strongest longbowman could only hold a drawn bow for a short time. The ease of use of a crossbow allows it to be used effectively with little training, while other types of bows take far more skill to shoot accurately. The disadvantage is the greater weight and clumsiness to reload compared to a bow, as well as the slower rate of shooting and the lower efficiency of the acceleration system, but there would be reduced elastic hysteresis, making the crossbow a more accurate weapon. Medieval European crossbows had a much smaller draw length than bows, so that, for the same energy to be imparted to the projectile, the crossbow had to have a much higher draw weight. A direct comparison between a fast hand-drawn replica crossbow and a longbow show a 6:10 rate of shooting or a 4:9 rate within 30 seconds and comparable weapons. Today, the crossbow often has a complicated legal status due to the possibility of lethal use and its similarities to both firearms and bows. While some jurisdictions treat crossbows in the same way as firearms, many others do not require any sort of license to own a crossbow. The legality of using a crossbow for hunting varies widely in different jurisdictions.	[ { "paragraph_id": 0, "text": "A crossbow is a ranged weapon using an elastic launching device consisting of a bow-like assembly called a prod, mounted horizontally on a main frame called a tiller, which is hand-held in a similar fashion to the stock of a long gun. Crossbows shoot arrow-like projectiles called bolts or quarrels. A person who shoots crossbow is called a crossbowman or an arbalist (after the arbalest, a European crossbow variant used during the 12th century).", "title": "" }, { "paragraph_id": 1, "text": "Crossbows and bows use the same launch principle, but an archer using a longbow must maintain its draw by pitching the bowstring with fingers, pulling it back with arm and back muscles, and then holding that form while aiming, which demands significant physical strength. A crossbow has a locking mechanism to maintain the draw, limiting the shooter's exertion to pulling the string into the lock and then releasing the shot by depressing a trigger. This enables a crossbowman to handle more draw weight, and to hold it with significantly less physical strain, thus potentially achieving better precision. Crossbows are usually drawn by direct pulling, but windlass-like mechanisms requiring less force were sometimes used.", "title": "" }, { "paragraph_id": 2, "text": "The earliest known crossbows were made in the first millennium BC, as early as the 7th century BC in ancient China, and as early as the 1st century AD in Greece (as the gastraphetes). Crossbows brought about a major shift in the role of projectile weaponry in wars, such as during Qin's unification wars and later the Han campaigns against northern nomads and western states. The medieval European crossbow was called by many names, including \"crossbow\" itself; most of these names derived from the word ballista, an ancient Greek torsion siege engine similar in appearance but different in design principle.", "title": "" }, { "paragraph_id": 3, "text": "In modern times, firearms have largely supplanted bows and crossbows as weapons of war, but crossbows remain widely used for competitive shooting sports and hunting, and for relatively silent shooting.", "title": "" }, { "paragraph_id": 4, "text": "A crossbowman or crossbow-maker is sometimes called an arbalista, arbalist, or arbalest. The last two are also used to refer to the crossbow.", "title": "Terminology" }, { "paragraph_id": 5, "text": "Arrow, bolt, and quarrel are all suitable terms for crossbow projectiles.", "title": "Terminology" }, { "paragraph_id": 6, "text": "The lath, also called the prod, is the bow of the crossbow. According to W.F. Peterson, the prod came into usage in the 19th century as a result of mistranslating rodd in a 16th-century list of crossbow effects.", "title": "Terminology" }, { "paragraph_id": 7, "text": "The stock is the wooden body on which the bow is mounted, although the medieval tiller is also used.", "title": "Terminology" }, { "paragraph_id": 8, "text": "The lock refers to the release mechanism, including the string, sears, trigger lever, and housing.", "title": "Terminology" }, { "paragraph_id": 9, "text": "A crossbow is essentially a bow mounted on an elongated frame (called a tiller or stock) with a built-in mechanism that holds the drawn bow string, as well as a trigger mechanism, which is used to release the string.", "title": "Construction" }, { "paragraph_id": 10, "text": "The Chinese trigger was a mechanism typically composed of three cast bronze pieces housed inside a hollow bronze enclosure. The entire mechanism is then dropped into a carved slot within the tiller and secured together by two bronze rods. The string catch (nut) is shaped like a \"J\" because it usually has a tall erect rear spine that protrudes above the housing, which serves the function of both a cocking lever (by pushing the drawn string onto it) and a primitive rear sight. It is held stationary against tension by the second piece, which is shaped like a flattened \"C\" and acts as the sear. The sear cannot move as it is trapped by the third piece, i.e. the actual trigger blade, which hangs vertically below the enclosure and catches the sear via a notch. The two bearing surfaces between the three trigger pieces each offers a mechanical advantage, which allow for handling significant draw weights with a much smaller pull weight. During shooting, the user will hold the crossbow at eye level by a vertical handle and aim along the arrow using the sighting spine for elevation, similar to how a modern rifleman shoots with iron sights. When the trigger blade is pulled, its notch disengages from the sear and allows the latter to drop downwards, which in turn frees up the nuts to pivot forward and release the bowstring.", "title": "Construction" }, { "paragraph_id": 11, "text": "The nu (弩) [crossbow] is so called because it spreads abroad an aura of rage [nù] (怒) . Its stock is like the arm of a man, therefore it is called bi (臂). That which hooks the bowstring is called ya (牙), for indeed it is like teeth. The part round about the teeth [i.e. the housing box] is called the guo (郭) [\"city wall\"], since it surrounds the gui (規) [lug] of the teeth [i.e. the locking nut]. Within [and below] there is the xuan dao (懸刀) [\"hanging knife\", i.e. the trigger blade] so called because it looks like one. The whole assembly is called ji (機)[\"machine\" or \"mechanism\"], for it is just as ingenious as the loom.", "title": "Construction" }, { "paragraph_id": 12, "text": "The earliest European designs featured a transverse slot in the top surface of the frame, down into which the string was placed. To shoot this design, a vertical rod is thrust up through a hole in the bottom of the notch, forcing the string out. This rod is usually attached perpendicular to a rear-facing lever called a tickler. A later design implemented a rolling cylindrical pawl called a nut to retain the string. This nut has a perpendicular centre slot for the bolt, and an intersecting axial slot for the string, along with a lower face or slot against which the internal trigger sits. They often also have some form of strengthening internal sear or trigger face, usually of metal. These roller nuts were either free-floating in their close-fitting hole across the stock, tied in with a binding of sinew or other strong cording; or mounted on a metal axle or pins. Removable or integral plates of wood, ivory, or metal on the sides of the stock kept the nut in place laterally. Nuts were made of antler, bone, or metal. Bows could be kept taut and ready to shoot for some time with little physical straining, allowing crossbowmen to aim better without fatiguing.", "title": "Construction" }, { "paragraph_id": 13, "text": "Chinese crossbow bows were made of composite material from the start.", "title": "Construction" }, { "paragraph_id": 14, "text": "European crossbows from the 10th to 12th centuries used wood for the bow, also called the prod or lath, which tended to be ash or yew.", "title": "Construction" }, { "paragraph_id": 15, "text": "Composite bows started appearing in Europe during the 13th century and could be made from layers of different material, often wood, horn, and sinew glued together and bound with animal tendon. These composite bows made of several layers are much stronger and more efficient in releasing energy than simple wooden bows.", "title": "Construction" }, { "paragraph_id": 16, "text": "As steel became more widely available in Europe around the 14th century, steel prods came into use.", "title": "Construction" }, { "paragraph_id": 17, "text": "Traditionally, the prod was often lashed to the stock with rope, whipcord, or other strong cording. This is called the bridle", "title": "Construction" }, { "paragraph_id": 18, "text": "The Chinese used winches for large crossbows mounted on fortifications or wagons, known as \"bedded crossbows\" (床弩). Winches may have been used for handheld crossbows during the Han dynasty (202 BC–9 AD, 25–220 AD), but there is only one known depiction of it. The 11th century Chinese military text Wujing Zongyao mentions types of crossbows using winch mechanisms, but it is not known if these were actually handheld crossbows or mounted crossbows. Another drawing method involved the shooters sitting on the ground, and using the combined strength of leg, waist, back and arm muscles to help span much heavier crossbows, which were aptly called \"waist-spun crossbows\" (腰張弩).", "title": "Construction" }, { "paragraph_id": 19, "text": "During the medieval era, both Chinese and European crossbows used stirrups as well as belt hooks. In the 13th century, European crossbows started using winches, and from the 14th century an assortment of spanning mechanisms such as winch pulleys, cord pulleys, gaffles (such as gaffe levers, goat's foot levers, and rarer internal lever-action mechanisms), cranequins, and even screws.", "title": "Construction" }, { "paragraph_id": 20, "text": "The smallest crossbows are pistol crossbows. Others are simple long stocks with the crossbow mounted on them. These could be shot from under the arm. The next step in development was stocks of the shape that would later be used for firearms, which allowed better aiming. The arbalest was a heavy crossbow that required special systems for pulling the sinew via windlasses. For siege warfare, the size of crossbows was further increased to hurl large projectiles, such as rocks, at fortifications. The required crossbows needed a massive base frame and powerful windlass devices.", "title": "Construction" }, { "paragraph_id": 21, "text": "The arrow-like projectiles of a crossbow are called bolts or quarrels. These are usually much shorter than arrows but can be several times heavier. There is an optimum weight for bolts to achieve maximum kinetic energy, which varies depending on the strength and characteristics of the crossbow, but most could pass through common mail. Crossbow bolts can be fitted with a variety of heads, some with sickle-shaped heads to cut rope or rigging; but the most common today is a four-sided point called a quarrel. A highly specialized type of bolt is employed to collect blubber biopsy samples used in biology research.", "title": "Construction" }, { "paragraph_id": 22, "text": "Even relatively small differences in arrow weight can have a considerable impact on its flight trajectory and drop.", "title": "Construction" }, { "paragraph_id": 23, "text": "Bullet-shooting crossbows are modified crossbows that use bullets or stones as projectiles.", "title": "Construction" }, { "paragraph_id": 24, "text": "The ancient Chinese crossbow often included a metal (i.e. bronze or steel) grid serving as iron sights. Modern crossbow sights often use similar technology to modern firearm sights, such as red dot sights and telescopic sights. Many crossbow scopes feature multiple crosshairs to compensate for the significant effects of gravity over different ranges. In most cases, a newly bought crossbow will need to be sighted for accurate shooting.", "title": "Construction" }, { "paragraph_id": 25, "text": "A major cause of the sound of shooting a crossbow is vibration of various components. Crossbow silencers are multiple components placed on high vibration parts, such as the string and limbs, to dampen vibration and suppress the sound of loosing the bolt.", "title": "Construction" }, { "paragraph_id": 26, "text": "In terms of archaeological evidence, crossbow locks made of cast bronze have been found in China dating to around 650 BC. They have also been found in Tombs 3 and 12 at Qufu, Shandong, previously the capital of Lu, and date to the 6th century BC. Bronze crossbow bolts dating from the mid-5th century BC have been found at a Chu burial site in Yutaishan, Jiangling County, Hubei Province. Other early finds of crossbows were discovered in Tomb 138 at Saobatang, Hunan Province, and date to the mid-4th century BC. It is possible that these early crossbows used spherical pellets for ammunition. A Western Han mathematician and music theorist, Jing Fang (78–37 BC), compared the moon to the shape of a round crossbow bullet. The Zhuangzi also mentions crossbow bullets.", "title": "History" }, { "paragraph_id": 27, "text": "The earliest Chinese documents mentioning a crossbow were texts from the 4th to 3rd centuries BC attributed to the followers of Mozi. This source refers to the use of a giant crossbow between the 6th and 5th centuries BC, corresponding to the late Spring and Autumn period. Sun Tzu's The Art of War (first appearance dated between 500 BC to 300 BC) refers to the characteristics and use of crossbows in chapters 5 and 12 respectively, and compares a drawn crossbow to \"might\". The Huainanzi advises its readers not to use crossbows in marshland where the surface is soft and it is hard to arm the crossbow with the foot. The Records of the Grand Historian, completed in 94 BC, mentions that Sun Bin defeated Pang Juan by ambushing him with a battalion of crossbowmen at the Battle of Maling in 342 BC. The Book of Han, finished 111 AD, lists two military treatises on crossbows.", "title": "History" }, { "paragraph_id": 28, "text": "Handheld crossbows with complex bronze trigger mechanisms have also been found with the Terracotta Army in the tomb of Qin Shi Huang (r. 221–210 BC) that are similar to specimens from the subsequent Han dynasty (202 BC–220 AD), while crossbowmen described in the Qin and Han dynasty learned drill formations, some were even mounted as charioteers and cavalry units, and Han dynasty writers attributed the success of numerous battles against the Xiongnu and Western Regions city-states to massed crossbow volleys. The bronze triggers were designed in such a way that they were able to store a large amount of energy within the bow when drawn but was easily shot with little resistance and recoil when the trigger was pulled. The trigger nut also had a long vertical spine that could be used like a primitive rear sight for elevation adjustment, which allowed precision shooting over longer distances. The Qin/Han-era crossbow was also an early example of modular design, as the bronze trigger components were also mass-produced with relative precise tolerances so that the parts were interchangeable between different crossbows. The trigger mechanism from one crossbow can be installed into another simply by dropping into a tiller slot of the same specifications and secured with dowel pins. Some crossbow designs were also found to be fitted with bronze buttplates and trigger guard.", "title": "History" }, { "paragraph_id": 29, "text": "It is clear from surviving inventory lists in Gansu and Xinjiang that the crossbow was greatly favored by the Han dynasty. For example, in one batch of slips there are only two mentions of bows, but thirty mentions of crossbows. Crossbows were mass-produced in state armories with designs improving as time went on, such as the use of a mulberry wood stock and brass; a crossbow in 1068 could pierce a tree at 140 paces. Crossbows were used in numbers as large as 50,000 starting from the Qin dynasty and upwards of several hundred thousand during the Han. According to one authority, the crossbow had become \"nothing less than the standard weapon of the Han armies\", by the second century BC. Han soldiers were required to pull a crossbow with a draw weight equivalent of 76 kg (168 pounds) to qualify as an entry level crossbowman, while it was claimed that a few elite troops were capable of bending crossbows with a draw-weight in excess of 750lb by the hands-and-feet method.", "title": "History" }, { "paragraph_id": 30, "text": "After the Han dynasty, the crossbow lost favor during the Six Dynasties, until it experienced a mild resurgence during the Tang dynasty, under which the ideal expeditionary army of 20,000 included 2,200 archers and 2,000 crossbowmen. Li Jing and Li Quan prescribed 20 percent of the infantry to be armed with crossbows.", "title": "History" }, { "paragraph_id": 31, "text": "During the Song dynasty, the crossbow received a huge upsurge in military usage, and often overshadowed the bow 2 to 1 in numbers. During this time period, a stirrup was added for ease of loading. The Song government attempted to restrict the public use of crossbows and sought ways to keep both body armor and crossbows out of civilian ownership. Despite the ban on certain types of crossbows, the weapon experienced an upsurge in civilian usage as both a hunting weapon and pastime. The \"romantic young people from rich families, and others who had nothing particular to do\" formed crossbow-shooting clubs as a way to pass time.", "title": "History" }, { "paragraph_id": 32, "text": "During the late Ming dynasty, no crossbows were mentioned to have been produced in the three-year period from 1619 to 1622. With 21,188,366 taels, the Ming manufactured 25,134 cannons, 8,252 small guns, 6,425 muskets, 4,090 culverins, 98,547 polearms and swords, 26,214 great \"horse decapitator\" swords, 42,800 bows, 1,000 great axes, 2,284,000 arrows, 180,000 fire arrows, 64,000 bow strings, and hundreds of transport carts.", "title": "History" }, { "paragraph_id": 33, "text": "Military crossbows were armed by treading, or basically placing the feet on the bow stave and drawing it using one's arms and back muscles. During the Song dynasty, stirrups were added for ease of drawing and to mitigate damage to the bow. Alternatively, the bow could also be drawn by a belt claw attached to the waist, but this was done lying down, as was the case for all large crossbows. Winch-drawing was used for the large mounted crossbows as seen below, but evidence for its use in Chinese hand-crossbows is scant.", "title": "History" }, { "paragraph_id": 34, "text": "There were also other sorts of crossbows, such as the repeating crossbow, multi-shot crossbow, and larger field artillery crossbows.", "title": "History" }, { "paragraph_id": 35, "text": "Around the third century BC, King An Dương of Âu Lạc (modern-day northern Vietnam) and (modern-day southern China) commissioned a man named Cao Lỗ (or Cao Thông) to construct a crossbow and christened it \"Saintly Crossbow of the Supernaturally Luminous Golden Claw\" (nỏ thần), which could kill 300 men in one shot. According to historian Keith Taylor, the crossbow, along with the word for it, seems to have been introduced into China from Austroasiatic peoples in the south around the fourth century BC. However, this is contradicted by crossbow locks found in ancient Chinese Zhou dynasty tombs dating to the 600s BC.", "title": "History" }, { "paragraph_id": 36, "text": "In 315 AD, Nu Wen taught the Chams how to build fortifications and use crossbows. The Chams would later give the Chinese crossbows as presents on at least one occasion.", "title": "History" }, { "paragraph_id": 37, "text": "Crossbow technology for crossbows with more than one prod was transferred from the Chinese to Champa, which Champa used in its invasion of the Khmer Empire's Angkor in 1177. When the Chams sacked Angkor they used the Chinese siege crossbow. The Chinese taught the Chams how to use crossbows and mounted archery Crossbows and archery in 1171. The Khmer also had double-bow crossbows mounted on elephants, which Michel Jacq-Hergoualc'h suggests were elements of Cham mercenaries in Jayavarman VII's army.", "title": "History" }, { "paragraph_id": 38, "text": "The native Montagnards of Vietnam's Central Highlands were also known to have used crossbows, as both a tool for hunting, and later an effective weapon against the Viet Cong during the Vietnam War. Montagnard fighters armed with crossbows proved a highly valuable asset to the US Special Forces operating in Vietnam, and it was not uncommon for the Green Berets to integrate Montagnard crossbowmen into their strike teams.", "title": "History" }, { "paragraph_id": 39, "text": "The earliest crossbow-like weapons in Europe probably emerged around the late 5th century BC when the gastraphetes, an ancient Greek crossbow, appeared. The name means \"belly-bow\"; the concave withdrawal rest at one end of the stock was placed against the belly of the operator, and he could press it to withdraw the slider before attaching a string to the trigger and loading the bolt; this could store more energy than Greek bows. The device was described by the Greek author Heron of Alexandria in his Belopoeica (\"On Catapult-making\"), which draws on an earlier account of his compatriot engineer Ctesibius (fl. 285–222 BC). According to Heron, the gastraphetes was the forerunner of the later catapult, which places its invention some unknown time prior to 399 BC. The gastraphetes was a crossbow mounted on a stock divided into a lower and upper section. The lower was a case fixed to the bow, and the upper was a slider which had the same dimensions as the case. It was used in the Siege of Motya in 397 BC. This was a key Carthaginian stronghold in Sicily, as described in the 1st century AD by Heron of Alexandria in his book Belopoeica.", "title": "History" }, { "paragraph_id": 40, "text": "There were also other arrow-shooting machines such as the larger ballista and smaller Scorpio from around 338 BC, but these are torsion catapults and are not considered crossbows. Arrow-shooting machines (katapeltai) are briefly mentioned by Aeneas Tacticus in his treatise on siegecraft written around 350 BC. An Athenian inventory from 330 to 329 BC includes catapults bolts with heads and flights. Arrow-shooting machines in action are reported from Philip II's siege of Perinthos in Thrace in 340 BC. At the same time, Greek fortifications began to feature high towers with shuttered windows in the top, presumably to house anti-personnel arrow shooters, as in Aigosthena.", "title": "History" }, { "paragraph_id": 41, "text": "The late 4th century author Vegetius, in his De Re Militari, describes arcubalistarii (crossbowmen) working together with archers and artillerymen. However, it is disputed whether arcuballistas were crossbows or torsion-powered weapons. The idea that the arcuballista was a crossbow is due to Vegetius referring separately to it and the manuballista, which was torsion powered. Therefore, if the arcuballista was not like the manuballista, it may have been a crossbow. According to Vegetius, these were well-known devices, and hence he did not describe them in depth. Joseph Needham argues against the existence of Roman crossbowmen:", "title": "History" }, { "paragraph_id": 42, "text": "On the textual side, there is almost nothing but passing references in the military historian Vegetius (fl. + 386) to 'manuballistae' and 'arcuballistae' which he said he must decline to describe as they were so well known. His decision was highly regrettable, as no other author of the time makes any mention of them at all. Perhaps the best supposition is that the crossbow was primarily known in late European antiquity as a hunting weapon, and received only local use in certain units of the armies of Theodosius I, with which Vegetius happened to be acquainted.", "title": "History" }, { "paragraph_id": 43, "text": "On the other hand, Arrian's earlier Ars Tactica, from about 136 AD, also mentions 'missiles shot not from a bow but from a machine' and that this machine was used on horseback while in full gallop. It is presumed that this was a crossbow.", "title": "History" }, { "paragraph_id": 44, "text": "The only pictorial evidence of Roman arcuballistas comes from sculptural reliefs in Roman Gaul depicting them in hunting scenes. These are aesthetically similar to both the Greek and Chinese crossbows, but it is not clear what kind of release mechanism they used. Archaeological evidence suggests they were similar to the rolling nut mechanism of medieval Europe.", "title": "History" }, { "paragraph_id": 45, "text": "There are essentially no references to the crossbow in Europe from the 5th until the 10th century. There is however a depiction of a crossbow as a hunting weapon on four Pictish stones from early medieval Scotland (6th to 9th centuries): St. Vigeans no. 1, Glenferness, Shandwick, and Meigle.", "title": "History" }, { "paragraph_id": 46, "text": "The crossbow reappeared again in 947 as a French weapon during the siege of Senlis and again in 984 at the siege of Verdun. Crossbows were used at the battle of Hastings in 1066, and by the 12th century they had become common battlefield weapons. The earliest extant European crossbow remains were found at Lake Paladru, dated to the 11th century.", "title": "History" }, { "paragraph_id": 47, "text": "The crossbow superseded hand bows in many European armies during the 12th century, except in England, where the longbow was more popular. Later crossbows (sometimes referred to as arbalests), utilizing all-steel prods, were able to achieve power close (and sometime superior) to longbows, but were more expensive to produce and slower to reload because they required the aid of mechanical devices such as the cranequin or windlass to draw back their extremely heavy bows. Usually these could only shoot two bolts per minute versus twelve or more with a skilled archer, often necessitating the use of a pavise (shield) to protect the operator from enemy fire. Along with polearm weapons made from farming equipment, the crossbow was also a weapon of choice for insurgent peasants such as the Taborites. Genoese crossbowmen were famous mercenaries hired throughout medieval Europe, while the crossbow also played an important role in anti-personnel defense of ships.", "title": "History" }, { "paragraph_id": 48, "text": "Crossbows were eventually replaced in warfare by gunpowder weapons. Early hand cannons had slower rates of fire and much worse accuracy than contemporary crossbows, but the arquebus (which proliferated in the mid to late 15th century) matched crossbows' rate of fire while being far more powerful. The Battle of Cerignola in 1503 was largely won by Spain through the use of matchlock arquebuses, marking the first time a major battle was won through the use of hand-held firearms. Later, similar competing tactics would feature harquebusiers or musketeers in formation with pikemen, pitted against cavalry firing pistols or carbines. While the military crossbow had largely been supplanted by firearms on the battlefield by 1525, the sporting crossbow in various forms remained a popular hunting weapon in Europe until the eighteenth century. Crossbows saw irregular use throughout the rest of the 16th century; for example, Maria Pita's husband was killed by a crossbowman of the English Armada in 1589.", "title": "History" }, { "paragraph_id": 49, "text": "There are no references to crossbows in Islamic texts earlier than the 14th century. Arabs in general were averse to the crossbow and considered it a foreign weapon. They called it qaus al-rijl (foot-drawn bow), qaus al-zanbūrak (bolt bow) and qaus al-faranjīyah (Frankish bow). Although Muslims did have crossbows, there seems to be a split between eastern and western types. Muslims in Spain used the typical European trigger, while eastern Muslim crossbows had a more complex trigger mechanism.", "title": "History" }, { "paragraph_id": 50, "text": "Mamluk cavalry used crossbows.", "title": "History" }, { "paragraph_id": 51, "text": "Oyumi were ancient Japanese artillery pieces that first appeared in the seventh century (during the Asuka period). According to Japanese records, the Oyumi was different from the handheld crossbow also in use during the same time period. A quote from a seventh-century source seems to suggest that the Oyumi may have able to fire multiple arrows at once: \"the Oyumi were lined up and fired at random, the arrows fell like rain\". A ninth-century Japanese artisan named Shimaki no Fubito claimed to have improved on a version of the weapon used by the Chinese; his version could rotate and fire projectiles in multiple directions. The last recorded use of the Oyumi was in 1189.", "title": "History" }, { "paragraph_id": 52, "text": "In West and Central Africa, crossbows served as a scouting weapon and for hunting, with African slaves bringing this technology to natives in America. In the Southern United States, the crossbow was used for hunting and warfare when firearms or gunpowder were unavailable because of economic hardships or isolation. In the north of Northern America, light hunting crossbows were traditionally used by the Inuit. These are technologically similar to the African-derived crossbows, but have a different route of influence.", "title": "History" }, { "paragraph_id": 53, "text": "Spanish conquistadors continued to use crossbows in the Americas long after they were replaced in European battlefields by firearms. Only in the 1570s did firearms become completely dominant among the Spanish in the Americas.", "title": "History" }, { "paragraph_id": 54, "text": "The French and the British used a crossbow-like Sauterelle (French for grasshopper) in World War I. It was lighter and more portable than the Leach Trench Catapult, but less powerful. It weighed 24 kg (53 pounds) and could throw an F1 grenade or Mills bomb 110–140 m (120–150 yards). The Sauterelle replaced the Leach Catapult in British service and was in turn replaced in 1916 by the 2-inch Medium Trench Mortar and Stokes mortar.", "title": "History" }, { "paragraph_id": 55, "text": "Crossbows are used for shooting sports and bowhunting in modern archery and for blubber biopsy samples in scientific research. In some countries such as Canada, they may be less heavily regulated than firearms, and thus more popular for hunting; some jurisdictions have bow and/or crossbow only seasons.", "title": "Modern use" }, { "paragraph_id": 56, "text": "Crossbows are no longer used in battles, but there are still some military applications. For example, there is an undated photograph of Peruvian soldiers equipped with crossbows and rope to establish a zip-line in difficult terrain. In Brazil the CIGS (Jungle Warfare Training Center) also trains soldiers in the use of crossbows.", "title": "Modern use" }, { "paragraph_id": 57, "text": "In the US, SAA International Ltd manufacture a 150-foot-pound (200 J) crossbow-launched version of the U.S. Army type classified Launched Grapnel Hook (LGH), among other mine countermeasure solutions designed for the Middle Eastern theatre. It was evaluated as successful in Cambodia and Bosnia. It is used to probe for and detonate tripwire-initiated mines and booby traps at up to 50 m (55 yards). The concept is similar to the LGH device originally fired from a rifle, as a plastic retrieval line is attached. Reusable up to 20 times, the line can be reeled back in without exposing the user. The device is of particular use in tactical situations where noise discipline is important.", "title": "Modern use" }, { "paragraph_id": 58, "text": "In Europe, Barnett International sold crossbows to Serbian forces which, according to The Guardian, were later used \"in ambushes and as a counter-sniper weapon\" against the Kosovo Liberation Army during the Kosovo War in the areas of Pec and Djakovica, south west of Kosovo. Whitehall launched an investigation, though the Department of Trade and Industry established that not being \"on the military list\", crossbows were not covered by export restrictions. Paul Beaver of Jane's Defence Publications commented that, \"They are not only a silent killer, they also have a psychological effect\". On 15 February 2008, Serbian Minister of Defence Dragan Sutanovac was pictured testing a Barnett crossbow during a public exercise of the Serbian Army's Special Forces in Nis, 200 km (120 miles) south of Belgrade. Special forces in both Greece and Turkey also continue to employ the crossbow. Spain's Green Berets still use the crossbow as well.", "title": "Modern use" }, { "paragraph_id": 59, "text": "In Asia, some Chinese armed forces use crossbows, including the special force Snow Leopard Commando Unit of the People's Armed Police and the People's Liberation Army. One reason for this is the crossbow's ability to stop persons carrying explosives without risk of causing detonation. During the Xinjiang riots of July 2009, crossbows were used alongside modern military hardware to quell protests. The Indian Navy's Marine Commando Force were equipped until the late 1980s with crossbows with cyanide-tipped bolts, as an alternative to suppressed handguns.", "title": "Modern use" }, { "paragraph_id": 60, "text": "With a crossbow, archers could release a draw force far in excess of what they could have handled with a bow. Furthermore, the crossbow could hold the tension indefinitely, whereas even the strongest longbowman could only hold a drawn bow for a short time. The ease of use of a crossbow allows it to be used effectively with little training, while other types of bows take far more skill to shoot accurately. The disadvantage is the greater weight and clumsiness to reload compared to a bow, as well as the slower rate of shooting and the lower efficiency of the acceleration system, but there would be reduced elastic hysteresis, making the crossbow a more accurate weapon.", "title": "Comparison to conventional bows" }, { "paragraph_id": 61, "text": "Medieval European crossbows had a much smaller draw length than bows, so that, for the same energy to be imparted to the projectile, the crossbow had to have a much higher draw weight.", "title": "Comparison to conventional bows" }, { "paragraph_id": 62, "text": "A direct comparison between a fast hand-drawn replica crossbow and a longbow show a 6:10 rate of shooting or a 4:9 rate within 30 seconds and comparable weapons.", "title": "Comparison to conventional bows" }, { "paragraph_id": 63, "text": "Today, the crossbow often has a complicated legal status due to the possibility of lethal use and its similarities to both firearms and bows. While some jurisdictions treat crossbows in the same way as firearms, many others do not require any sort of license to own a crossbow. The legality of using a crossbow for hunting varies widely in different jurisdictions.", "title": "Legislation" }, { "paragraph_id": 64, "text": "", "title": "External links" } ]	A crossbow is a ranged weapon using an elastic launching device consisting of a bow-like assembly called a prod, mounted horizontally on a main frame called a tiller, which is hand-held in a similar fashion to the stock of a long gun. Crossbows shoot arrow-like projectiles called bolts or quarrels. A person who shoots crossbow is called a crossbowman or an arbalist. Crossbows and bows use the same launch principle, but an archer using a longbow must maintain its draw by pitching the bowstring with fingers, pulling it back with arm and back muscles, and then holding that form while aiming, which demands significant physical strength. A crossbow has a locking mechanism to maintain the draw, limiting the shooter's exertion to pulling the string into the lock and then releasing the shot by depressing a trigger. This enables a crossbowman to handle more draw weight, and to hold it with significantly less physical strain, thus potentially achieving better precision. Crossbows are usually drawn by direct pulling, but windlass-like mechanisms requiring less force were sometimes used. The earliest known crossbows were made in the first millennium BC, as early as the 7th century BC in ancient China, and as early as the 1st century AD in Greece. Crossbows brought about a major shift in the role of projectile weaponry in wars, such as during Qin's unification wars and later the Han campaigns against northern nomads and western states. The medieval European crossbow was called by many names, including "crossbow" itself; most of these names derived from the word ballista, an ancient Greek torsion siege engine similar in appearance but different in design principle. In modern times, firearms have largely supplanted bows and crossbows as weapons of war, but crossbows remain widely used for competitive shooting sports and hunting, and for relatively silent shooting.	2001-10-30T22:17:41Z	2023-12-28T10:11:09Z	[ "Template:Cite journal", "Template:Refbegin", "Template:Ancient mechanical artillery and hand-held missile weapons", "Template:Authority control", "Template:Short description", "Template:Sfn", "Template:Main", "Template:Dead link", "Template:Cite book", "Template:Archery", "Template:Use dmy dates", "Template:Ordered list", "Template:Quotation", "Template:Tertiary source inline", "Template:Cite news", "Template:Commonscat", "Template:Refs", "Template:Citation", "Template:ISBN", "Template:Refend", "Template:Wiktionary", "Template:Medieval mechanical artillery and hand-held missile weapons", "Template:Other uses", "Template:Convert", "Template:Cite web", "Template:Webarchive" ]	https://en.wikipedia.org/wiki/Crossbow
6,949	Carbamazepine	Carbamazepine, sold under the brand name Tegretol among others, is an anticonvulsant medication used in the treatment of epilepsy and neuropathic pain. It is used as an adjunctive treatment in schizophrenia along with other medications and as a second-line agent in bipolar disorder. Carbamazepine appears to work as well as phenytoin and valproate for focal and generalized seizures. It is not effective for absence or myoclonic seizures. Carbamazepine was discovered in 1953 by Swiss chemist Walter Schindler. It was first marketed in 1962. It is available as a generic medication. It is on the World Health Organization's List of Essential Medicines. In 2020, it was the 185th most commonly prescribed medication in the United States, with more than 2 million prescriptions. Carbamazepine is typically used for the treatment of seizure disorders and neuropathic pain. It is used off-label as a second-line treatment for bipolar disorder and in combination with an antipsychotic in some cases of schizophrenia when treatment with a conventional antipsychotic alone has failed. However, evidence does not support its usage for schizophrenia. It is not effective for absence seizures or myoclonic seizures. Although carbamazepine may have a similar effectiveness (as measured by people continuing to use a medication) and efficacy (as measured by the medicine reducing seizure recurrence and improving remission) when compared to phenytoin and valproate, choice of medication should be evaluated on an individual basis as further research is needed to determine which medication is most helpful for people with newly-onset seizures. In the United States, carbamazepine is indicated for the treatment of epilepsy (including partial seizures, generalized tonic-clonic seizures and mixed seizures), and trigeminal neuralgia. Carbamazepine is the only medication that is approved by the Food and Drug Administration for the treatment of trigeminal neuralgia. As of 2014, a controlled release formulation was available for which there is tentative evidence showing fewer side effects and unclear evidence with regard to whether there is a difference in efficacy. In the US, the label for carbamazepine contains warnings concerning: Common adverse effects may include drowsiness, dizziness, headaches and migraines, ataxia, nausea, vomiting, and/or constipation. Alcohol use while taking carbamazepine may lead to enhanced depression of the central nervous system. Less common side effects may include increased risk of seizures in people with mixed seizure disorders, abnormal heart rhythms, blurry or double vision. Also, rare case reports of an auditory side effect have been made, whereby patients perceive sounds about a semitone lower than previously; this unusual side effect is usually not noticed by most people, and disappears after the person stops taking carbamazepine. In a systematic review, the authors identified seventy-three reports containing one-hundred ninety-one individuals who developed movement disorders associated with carbamazepine, oxcarbazepine, and eslicarbazepine. The abnormal movements encountered were myoclonus, dystonia, tics, dyskinesia, parkinsonism, akathisia, and unclear incoordination. Serious skin reactions such as Stevens–Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN) due to carbamazepine therapy are more common in people with a particular human leukocyte antigen gene-variant (allele), HLA-B1502. Odds ratios for the development of SJS or TEN in people who carry the allele can be in the double, triple or even quadruple digits, depending on the population studied. HLA-B1502 occurs almost exclusively in people with ancestry across broad areas of Asia, but has a very low or absent frequency in European, Japanese, Korean and African populations. However, the HLA-A31:01 allele has been shown to be a strong predictor of both mild and severe adverse reactions, such as the DRESS form of severe cutaneous reactions, to carbamazepine among Japanese, Chinese, Korean, and Europeans. It is suggested that carbamazepine acts as a potent antigen that binds to the antigen-presenting area of HLA-B1502 alike, triggering an everlasting activation signal on immature CD8-T cells, thus resulting in widespread cytotoxic reactions like SJS/TEN. Carbamazepine has a potential for drug interactions. Drugs that decrease breaking down of carbamazepine or otherwise increase its levels include erythromycin, cimetidine, propoxyphene, and calcium channel blockers. Grapefruit juice raises the bioavailability of carbamazepine by inhibiting the enzyme CYP3A4 in the gut wall and in the liver. Lower levels of carbamazepine are seen when administered with phenobarbital, phenytoin, or primidone, which can result in breakthrough seizure activity. Valproic acid and valnoctamide both inhibit microsomal epoxide hydrolase (mEH), the enzyme responsible for the breakdown of the active metabolite carbamazepine-10,11-epoxide into inactive metabolites. By inhibiting mEH, valproic acid and valnoctamide cause a build-up of the active metabolite, prolonging the effects of carbamazepine and delaying its excretion. Carbamazepine, as an inducer of cytochrome P450 enzymes, may increase clearance of many drugs, decreasing their concentration in the blood to subtherapeutic levels and reducing their desired effects. Drugs that are more rapidly metabolized with carbamazepine include warfarin, lamotrigine, phenytoin, theophylline, valproic acid, many benzodiazepines, and methadone. Carbamazepine also increases the metabolism of the hormones in birth control pills and can reduce their effectiveness, potentially leading to unexpected pregnancies. Carbamazepine is a sodium channel blocker. It binds preferentially to voltage-gated sodium channels in their inactive conformation, which prevents repetitive and sustained firing of an action potential. Carbamazepine has effects on serotonin systems but the relevance to its antiseizure effects is uncertain. There is evidence that it is a serotonin releasing agent and possibly even a serotonin reuptake inhibitor. It has been suggested that carbamazepine can also block voltage-gated calcium channels, which will reduce neurotransmitter release. Carbamazepine is relatively slowly but practically completely absorbed after administration by mouth. Highest concentrations in the blood plasma are reached after 4 to 24 hours depending on the dosage form. Slow release tablets result in about 15% lower absorption and 25% lower peak plasma concentrations than ordinary tablets, as well as in less fluctuation of the concentration, but not in significantly lower minimum concentrations. In the circulation, carbamazepine itself comprises 20 to 30% of total residues. The remainder is in the form of metabolites; 70 to 80% of residues is bound to plasma proteins. Concentrations in breast milk are 25 to 60% of those in the blood plasma. Carbamazepine itself is not pharmacologically active. It is activated, mainly by CYP3A4, to carbamazepine-10,11-epoxide, which is solely responsible for the drug's anticonvulsant effects. The epoxide is then inactivated by microsomal epoxide hydrolase (mEH) to carbamazepine-trans-10,11-diol and further to its glucuronides. Other metabolites include various hydroxyl derivatives and carbamazepine-N-glucuronide. The plasma half-life is about 35 to 40 hours when carbamazepine is given as single dose, but it is a strong inducer of liver enzymes, and the plasma half-life shortens to about 12 to 17 hours when it is given repeatedly. The half-life can be further shortened to 9–10 hours by other enzyme inducers such as phenytoin or phenobarbital. About 70% are excreted via the urine, almost exclusively in form of its metabolites, and 30% via the faeces. Carbamazepine was discovered by chemist Walter Schindler at J.R. Geigy AG (now part of Novartis) in Basel, Switzerland, in 1953. It was first marketed as a drug to treat epilepsy in Switzerland in 1963 under the brand name Tegretol; its use for trigeminal neuralgia (formerly known as tic douloureux) was introduced at the same time. It has been used as an anticonvulsant and antiepileptic in the United Kingdom since 1965, and has been approved in the United States since 1968. Carbamazepine was studied for bipolar disorder throughout the 1970s. Carbamazepine and its bio-transformation products have been detected in wastewater treatment plant effluent and in streams receiving treated wastewater. Field and laboratory studies have been conducted to understand the accumulation of carbamazepine in food plants grown in soil treated with sludge, which vary with respect to the concentrations of carbamazepine present in sludge and in the concentrations of sludge in the soil. Taking into account only studies that used concentrations commonly found in the environment, a 2014 review concluded that "the accumulation of carbamazepine into plants grown in soil amended with biosolids poses a de minimis risk to human health according to the approach." Carbamazepine is available worldwide under many brand names including Tegretol.	[ { "paragraph_id": 0, "text": "Carbamazepine, sold under the brand name Tegretol among others, is an anticonvulsant medication used in the treatment of epilepsy and neuropathic pain. It is used as an adjunctive treatment in schizophrenia along with other medications and as a second-line agent in bipolar disorder. Carbamazepine appears to work as well as phenytoin and valproate for focal and generalized seizures. It is not effective for absence or myoclonic seizures.", "title": "" }, { "paragraph_id": 1, "text": "Carbamazepine was discovered in 1953 by Swiss chemist Walter Schindler. It was first marketed in 1962. It is available as a generic medication. It is on the World Health Organization's List of Essential Medicines. In 2020, it was the 185th most commonly prescribed medication in the United States, with more than 2 million prescriptions.", "title": "" }, { "paragraph_id": 2, "text": "Carbamazepine is typically used for the treatment of seizure disorders and neuropathic pain. It is used off-label as a second-line treatment for bipolar disorder and in combination with an antipsychotic in some cases of schizophrenia when treatment with a conventional antipsychotic alone has failed. However, evidence does not support its usage for schizophrenia. It is not effective for absence seizures or myoclonic seizures. Although carbamazepine may have a similar effectiveness (as measured by people continuing to use a medication) and efficacy (as measured by the medicine reducing seizure recurrence and improving remission) when compared to phenytoin and valproate, choice of medication should be evaluated on an individual basis as further research is needed to determine which medication is most helpful for people with newly-onset seizures.", "title": "Medical uses" }, { "paragraph_id": 3, "text": "In the United States, carbamazepine is indicated for the treatment of epilepsy (including partial seizures, generalized tonic-clonic seizures and mixed seizures), and trigeminal neuralgia. Carbamazepine is the only medication that is approved by the Food and Drug Administration for the treatment of trigeminal neuralgia.", "title": "Medical uses" }, { "paragraph_id": 4, "text": "As of 2014, a controlled release formulation was available for which there is tentative evidence showing fewer side effects and unclear evidence with regard to whether there is a difference in efficacy.", "title": "Medical uses" }, { "paragraph_id": 5, "text": "In the US, the label for carbamazepine contains warnings concerning:", "title": "Adverse effects" }, { "paragraph_id": 6, "text": "Common adverse effects may include drowsiness, dizziness, headaches and migraines, ataxia, nausea, vomiting, and/or constipation. Alcohol use while taking carbamazepine may lead to enhanced depression of the central nervous system. Less common side effects may include increased risk of seizures in people with mixed seizure disorders, abnormal heart rhythms, blurry or double vision. Also, rare case reports of an auditory side effect have been made, whereby patients perceive sounds about a semitone lower than previously; this unusual side effect is usually not noticed by most people, and disappears after the person stops taking carbamazepine.", "title": "Adverse effects" }, { "paragraph_id": 7, "text": "In a systematic review, the authors identified seventy-three reports containing one-hundred ninety-one individuals who developed movement disorders associated with carbamazepine, oxcarbazepine, and eslicarbazepine. The abnormal movements encountered were myoclonus, dystonia, tics, dyskinesia, parkinsonism, akathisia, and unclear incoordination.", "title": "Adverse effects" }, { "paragraph_id": 8, "text": "Serious skin reactions such as Stevens–Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN) due to carbamazepine therapy are more common in people with a particular human leukocyte antigen gene-variant (allele), HLA-B1502. Odds ratios for the development of SJS or TEN in people who carry the allele can be in the double, triple or even quadruple digits, depending on the population studied. HLA-B1502 occurs almost exclusively in people with ancestry across broad areas of Asia, but has a very low or absent frequency in European, Japanese, Korean and African populations. However, the HLA-A31:01 allele has been shown to be a strong predictor of both mild and severe adverse reactions, such as the DRESS form of severe cutaneous reactions, to carbamazepine among Japanese, Chinese, Korean, and Europeans. It is suggested that carbamazepine acts as a potent antigen that binds to the antigen-presenting area of HLA-B1502 alike, triggering an everlasting activation signal on immature CD8-T cells, thus resulting in widespread cytotoxic reactions like SJS/TEN.", "title": "Adverse effects" }, { "paragraph_id": 9, "text": "Carbamazepine has a potential for drug interactions. Drugs that decrease breaking down of carbamazepine or otherwise increase its levels include erythromycin, cimetidine, propoxyphene, and calcium channel blockers. Grapefruit juice raises the bioavailability of carbamazepine by inhibiting the enzyme CYP3A4 in the gut wall and in the liver. Lower levels of carbamazepine are seen when administered with phenobarbital, phenytoin, or primidone, which can result in breakthrough seizure activity.", "title": "Interactions" }, { "paragraph_id": 10, "text": "Valproic acid and valnoctamide both inhibit microsomal epoxide hydrolase (mEH), the enzyme responsible for the breakdown of the active metabolite carbamazepine-10,11-epoxide into inactive metabolites. By inhibiting mEH, valproic acid and valnoctamide cause a build-up of the active metabolite, prolonging the effects of carbamazepine and delaying its excretion.", "title": "Interactions" }, { "paragraph_id": 11, "text": "Carbamazepine, as an inducer of cytochrome P450 enzymes, may increase clearance of many drugs, decreasing their concentration in the blood to subtherapeutic levels and reducing their desired effects. Drugs that are more rapidly metabolized with carbamazepine include warfarin, lamotrigine, phenytoin, theophylline, valproic acid, many benzodiazepines, and methadone. Carbamazepine also increases the metabolism of the hormones in birth control pills and can reduce their effectiveness, potentially leading to unexpected pregnancies.", "title": "Interactions" }, { "paragraph_id": 12, "text": "Carbamazepine is a sodium channel blocker. It binds preferentially to voltage-gated sodium channels in their inactive conformation, which prevents repetitive and sustained firing of an action potential. Carbamazepine has effects on serotonin systems but the relevance to its antiseizure effects is uncertain. There is evidence that it is a serotonin releasing agent and possibly even a serotonin reuptake inhibitor. It has been suggested that carbamazepine can also block voltage-gated calcium channels, which will reduce neurotransmitter release.", "title": "Pharmacology" }, { "paragraph_id": 13, "text": "Carbamazepine is relatively slowly but practically completely absorbed after administration by mouth. Highest concentrations in the blood plasma are reached after 4 to 24 hours depending on the dosage form. Slow release tablets result in about 15% lower absorption and 25% lower peak plasma concentrations than ordinary tablets, as well as in less fluctuation of the concentration, but not in significantly lower minimum concentrations.", "title": "Pharmacology" }, { "paragraph_id": 14, "text": "In the circulation, carbamazepine itself comprises 20 to 30% of total residues. The remainder is in the form of metabolites; 70 to 80% of residues is bound to plasma proteins. Concentrations in breast milk are 25 to 60% of those in the blood plasma.", "title": "Pharmacology" }, { "paragraph_id": 15, "text": "Carbamazepine itself is not pharmacologically active. It is activated, mainly by CYP3A4, to carbamazepine-10,11-epoxide, which is solely responsible for the drug's anticonvulsant effects. The epoxide is then inactivated by microsomal epoxide hydrolase (mEH) to carbamazepine-trans-10,11-diol and further to its glucuronides. Other metabolites include various hydroxyl derivatives and carbamazepine-N-glucuronide.", "title": "Pharmacology" }, { "paragraph_id": 16, "text": "The plasma half-life is about 35 to 40 hours when carbamazepine is given as single dose, but it is a strong inducer of liver enzymes, and the plasma half-life shortens to about 12 to 17 hours when it is given repeatedly. The half-life can be further shortened to 9–10 hours by other enzyme inducers such as phenytoin or phenobarbital. About 70% are excreted via the urine, almost exclusively in form of its metabolites, and 30% via the faeces.", "title": "Pharmacology" }, { "paragraph_id": 17, "text": "Carbamazepine was discovered by chemist Walter Schindler at J.R. Geigy AG (now part of Novartis) in Basel, Switzerland, in 1953. It was first marketed as a drug to treat epilepsy in Switzerland in 1963 under the brand name Tegretol; its use for trigeminal neuralgia (formerly known as tic douloureux) was introduced at the same time. It has been used as an anticonvulsant and antiepileptic in the United Kingdom since 1965, and has been approved in the United States since 1968.", "title": "History" }, { "paragraph_id": 18, "text": "Carbamazepine was studied for bipolar disorder throughout the 1970s.", "title": "History" }, { "paragraph_id": 19, "text": "Carbamazepine and its bio-transformation products have been detected in wastewater treatment plant effluent and in streams receiving treated wastewater. Field and laboratory studies have been conducted to understand the accumulation of carbamazepine in food plants grown in soil treated with sludge, which vary with respect to the concentrations of carbamazepine present in sludge and in the concentrations of sludge in the soil. Taking into account only studies that used concentrations commonly found in the environment, a 2014 review concluded that \"the accumulation of carbamazepine into plants grown in soil amended with biosolids poses a de minimis risk to human health according to the approach.\"", "title": "Society and culture" }, { "paragraph_id": 20, "text": "Carbamazepine is available worldwide under many brand names including Tegretol.", "title": "Society and culture" } ]	Carbamazepine, sold under the brand name Tegretol among others, is an anticonvulsant medication used in the treatment of epilepsy and neuropathic pain. It is used as an adjunctive treatment in schizophrenia along with other medications and as a second-line agent in bipolar disorder. Carbamazepine appears to work as well as phenytoin and valproate for focal and generalized seizures. It is not effective for absence or myoclonic seizures. Carbamazepine was discovered in 1953 by Swiss chemist Walter Schindler. It was first marketed in 1962. It is available as a generic medication. It is on the World Health Organization's List of Essential Medicines. In 2020, it was the 185th most commonly prescribed medication in the United States, with more than 2 million prescriptions.	2002-02-25T15:43:11Z	2023-12-20T20:04:34Z	[ "Template:Cite book", "Template:Refend", "Template:Ion channel modulators", "Template:Tricyclics", "Template:Short description", "Template:Nbsp", "Template:Rp", "Template:Cite journal", "Template:Portal bar", "Template:Neuropathic pain and fibromyalgia pharmacotherapies", "Template:Xenobiotic-sensing receptor modulators", "Template:Distinguish", "Template:Cite web", "Template:Commons category", "Template:Anticonvulsants", "Template:Mood stabilizers", "Template:Empty section", "Template:Reflist", "Template:Cite patent", "Template:Refbegin", "Template:Authority control", "Template:Use dmy dates", "Template:Infobox drug", "Template:Main", "Template:GABAA receptor positive allosteric modulators" ]	https://en.wikipedia.org/wiki/Carbamazepine
6,951	CCIR	CCIR is a four-letter abbreviation that may stand for:	[ { "paragraph_id": 0, "text": "CCIR is a four-letter abbreviation that may stand for:", "title": "" } ]	CCIR is a four-letter abbreviation that may stand for: California Coalition for Immigration Reform, a California political advocacy group for immigration reduction Campaign for Comprehensive Immigration Reform, a Washington, DC organization for immigrant rights Canadian Centre for Investigative Reporting, produces thoroughly researched reporting in the public interest Centre for Counseling Innovation and Research (CCIR), at Kish Island, Tehran, Mashhad Comité Consultatif International pour la Radio, a forerunner of the ITU-R CCIR 601, the former name of a broadcasting standard promulgated by the CCIR CCIR-tones, A selective calling system used in some radio communications systems in some European countries CCIR-1k and CCIR-2k, noise weighting standards for audio signals Commander's critical information requirement, a term in the US military		2020-01-02T07:53:06Z	[ "Template:Disambiguation" ]	https://en.wikipedia.org/wiki/CCIR
6,955	Chalcedonian Definition	The Chalcedonian Definition (also called the Chalcedonian Creed or the Definition of Chalcedon) is a declaration of Christ's nature (that it is dyophysite), adopted at the Council of Chalcedon in AD 451. Chalcedon was an early centre of Christianity located in Asia Minor. The council was the fourth of the ecumenical councils that are accepted by Chalcedonian churches which include the Catholic, Eastern Orthodox, Lutheran, Anglican and Reformed churches. It was the first council not to be recognised by any Oriental Orthodox church; for this reason these churches may be classified as Non-Chalcedonian. The Council of Chalcedon was summoned to consider the Christological question in light of the "one-nature" view of Christ proposed by Eutyches, archimandrite at Constantinople, which prevailed at the Second Council of Ephesus in 449, sometimes referred to as the "Robber Synod". The Council first solemnly ratified the Nicene Creed adopted in 325 and that creed as amended by the First Council of Constantinople in 381. It also confirmed the authority of two synodical letters of Cyril of Alexandria and the letter of Pope Leo I to Flavian of Constantinople. The full text of the definition reaffirms the decisions of the Council of Ephesus, the pre-eminence of the Creed of Nicaea (325) and the further definitions of the Council of Constantinople (381). In one of the translations into English, the key section, emphasizing the double nature of Christ (human and divine), runs: Following, then, the holy Fathers, we all unanimously teach that our Lord Jesus Christ is to us One and the same Son, the Self-same Perfect in Godhead, the Self-same Perfect in Manhood; truly God and truly Man; the Self-same of a rational soul and body; co-essential with the Father according to the Godhead, the Self-same co-essential with us according to the Manhood; like us in all things, sin apart; before the ages begotten of the Father as to the Godhead, but in the last days, the Self-same, for us and for our salvation (born) of Mary the Virgin Theotokos as to the Manhood; One and the Same Christ, Son, Lord, Only-begotten; acknowledged in Two Natures unconfusedly, unchangeably, indivisibly, inseparably; the difference of the Natures being in no way removed because of the Union, but rather the properties of each Nature being preserved, and (both) concurring into One Person and One Hypostasis; not as though He was parted or divided into Two Persons, but One and the Self-same Son and Only-begotten God, Word, Lord, Jesus Christ; even as from the beginning the prophets have taught concerning Him, and as the Lord Jesus Christ Himself hath taught us, and as the Symbol of the Fathers hath handed down to us. The Definition implicitly addressed a number of popular heretical beliefs. The reference to "co-essential with the Father" was directed at Arianism; "co-essential with us" is directed at Apollinarianism; "Two Natures unconfusedly, unchangeably" refutes Eutychianism; and "indivisibly, inseparably" and "Theotokos" are against Nestorianism. The Chalcedonian Definition was written amid controversy between the Western and Eastern churches over the meaning of the Incarnation (see Christology). The Western church readily accepted the creed, but some Eastern churches did not. Political disturbances prevented the Armenian bishops from attending. Even though Chalcedon reaffirmed the Third Council's condemnation of Nestorius, the Non-Chalcedonians always suspected that the Chalcedonian Definition tended towards Nestorianism. This was in part because of the restoration of a number of bishops deposed at the Second Council of Ephesus, bishops who had previously indicated what appeared to be support of Nestorian positions. The Coptic Church of Alexandria dissented, holding to Cyril of Alexandria's preferred formula for the oneness of Christ's nature in the incarnation of God the Word as "out of two natures". Cyril's language is not consistent and he may have countenanced the view that it is possible to contemplate in theory two natures after the incarnation, but the Church of Alexandria felt that the Definition should have stated that Christ be acknowledged "out of two natures" rather than "in two natures". The definition defines that Christ is "acknowledged in two natures", which "come together into one person and one hypostasis". The formal definition of "two natures" in Christ was understood by the critics of the council at the time, and is understood by many historians and theologians today, to side with western and Antiochene Christology and to diverge from the teaching of Cyril of Alexandria, who always stressed that Christ is "one". However, a modern analysis of the sources of the creed (by A. de Halleux, in Revue Theologique de Louvain 7, 1976) and a reading of the acts, or proceedings, of the council show that the bishops considered Cyril the great authority and that even the language of "two natures" derives from him. This dyophysite position, historically characterised by Chalcedonian followers as "monophysitism", though this is denied by the dissenters, formed the basis for the distinction of the Coptic Church of Egypt and Ethiopia and the "Jacobite" churches of Syria, and the Armenian Apostolic Church (see Oriental Orthodoxy) from other churches.	[ { "paragraph_id": 0, "text": "The Chalcedonian Definition (also called the Chalcedonian Creed or the Definition of Chalcedon) is a declaration of Christ's nature (that it is dyophysite), adopted at the Council of Chalcedon in AD 451. Chalcedon was an early centre of Christianity located in Asia Minor. The council was the fourth of the ecumenical councils that are accepted by Chalcedonian churches which include the Catholic, Eastern Orthodox, Lutheran, Anglican and Reformed churches.", "title": "" }, { "paragraph_id": 1, "text": "It was the first council not to be recognised by any Oriental Orthodox church; for this reason these churches may be classified as Non-Chalcedonian.", "title": "" }, { "paragraph_id": 2, "text": "The Council of Chalcedon was summoned to consider the Christological question in light of the \"one-nature\" view of Christ proposed by Eutyches, archimandrite at Constantinople, which prevailed at the Second Council of Ephesus in 449, sometimes referred to as the \"Robber Synod\".", "title": "Context" }, { "paragraph_id": 3, "text": "The Council first solemnly ratified the Nicene Creed adopted in 325 and that creed as amended by the First Council of Constantinople in 381. It also confirmed the authority of two synodical letters of Cyril of Alexandria and the letter of Pope Leo I to Flavian of Constantinople.", "title": "Context" }, { "paragraph_id": 4, "text": "The full text of the definition reaffirms the decisions of the Council of Ephesus, the pre-eminence of the Creed of Nicaea (325) and the further definitions of the Council of Constantinople (381).", "title": "Content" }, { "paragraph_id": 5, "text": "In one of the translations into English, the key section, emphasizing the double nature of Christ (human and divine), runs:", "title": "Content" }, { "paragraph_id": 6, "text": "Following, then, the holy Fathers, we all unanimously teach that our Lord Jesus Christ is to us One and the same Son, the Self-same Perfect in Godhead, the Self-same Perfect in Manhood; truly God and truly Man; the Self-same of a rational soul and body; co-essential with the Father according to the Godhead, the Self-same co-essential with us according to the Manhood; like us in all things, sin apart; before the ages begotten of the Father as to the Godhead, but in the last days, the Self-same, for us and for our salvation (born) of Mary the Virgin Theotokos as to the Manhood; One and the Same Christ, Son, Lord, Only-begotten; acknowledged in Two Natures unconfusedly, unchangeably, indivisibly, inseparably; the difference of the Natures being in no way removed because of the Union, but rather the properties of each Nature being preserved, and (both) concurring into One Person and One Hypostasis; not as though He was parted or divided into Two Persons, but One and the Self-same Son and Only-begotten God, Word, Lord, Jesus Christ; even as from the beginning the prophets have taught concerning Him, and as the Lord Jesus Christ Himself hath taught us, and as the Symbol of the Fathers hath handed down to us.", "title": "Content" }, { "paragraph_id": 7, "text": "The Definition implicitly addressed a number of popular heretical beliefs. The reference to \"co-essential with the Father\" was directed at Arianism; \"co-essential with us\" is directed at Apollinarianism; \"Two Natures unconfusedly, unchangeably\" refutes Eutychianism; and \"indivisibly, inseparably\" and \"Theotokos\" are against Nestorianism.", "title": "Content" }, { "paragraph_id": 8, "text": "The Chalcedonian Definition was written amid controversy between the Western and Eastern churches over the meaning of the Incarnation (see Christology). The Western church readily accepted the creed, but some Eastern churches did not. Political disturbances prevented the Armenian bishops from attending. Even though Chalcedon reaffirmed the Third Council's condemnation of Nestorius, the Non-Chalcedonians always suspected that the Chalcedonian Definition tended towards Nestorianism. This was in part because of the restoration of a number of bishops deposed at the Second Council of Ephesus, bishops who had previously indicated what appeared to be support of Nestorian positions.", "title": "Oriental Orthodox dissent" }, { "paragraph_id": 9, "text": "The Coptic Church of Alexandria dissented, holding to Cyril of Alexandria's preferred formula for the oneness of Christ's nature in the incarnation of God the Word as \"out of two natures\". Cyril's language is not consistent and he may have countenanced the view that it is possible to contemplate in theory two natures after the incarnation, but the Church of Alexandria felt that the Definition should have stated that Christ be acknowledged \"out of two natures\" rather than \"in two natures\".", "title": "Oriental Orthodox dissent" }, { "paragraph_id": 10, "text": "The definition defines that Christ is \"acknowledged in two natures\", which \"come together into one person and one hypostasis\". The formal definition of \"two natures\" in Christ was understood by the critics of the council at the time, and is understood by many historians and theologians today, to side with western and Antiochene Christology and to diverge from the teaching of Cyril of Alexandria, who always stressed that Christ is \"one\". However, a modern analysis of the sources of the creed (by A. de Halleux, in Revue Theologique de Louvain 7, 1976) and a reading of the acts, or proceedings, of the council show that the bishops considered Cyril the great authority and that even the language of \"two natures\" derives from him.", "title": "Oriental Orthodox dissent" }, { "paragraph_id": 11, "text": "This dyophysite position, historically characterised by Chalcedonian followers as \"monophysitism\", though this is denied by the dissenters, formed the basis for the distinction of the Coptic Church of Egypt and Ethiopia and the \"Jacobite\" churches of Syria, and the Armenian Apostolic Church (see Oriental Orthodoxy) from other churches.", "title": "Oriental Orthodox dissent" } ]	The Chalcedonian Definition is a declaration of Christ's nature, adopted at the Council of Chalcedon in AD 451. Chalcedon was an early centre of Christianity located in Asia Minor. The council was the fourth of the ecumenical councils that are accepted by Chalcedonian churches which include the Catholic, Eastern Orthodox, Lutheran, Anglican and Reformed churches. It was the first council not to be recognised by any Oriental Orthodox church; for this reason these churches may be classified as Non-Chalcedonian.	2001-10-31T17:46:26Z	2023-08-29T09:42:12Z	[ "Template:Cite web", "Template:Sfn", "Template:Blockquote", "Template:Citation needed", "Template:Portal", "Template:Cite book", "Template:Refbegin", "Template:Cite wikisource", "Template:Refend", "Template:Short description", "Template:More citations needed", "Template:Christology", "Template:Reflist" ]	https://en.wikipedia.org/wiki/Chalcedonian_Definition
6,956	Conservation law	In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time. Exact conservation laws include conservation of mass-energy, conservation of linear momentum, conservation of angular momentum, and conservation of electric charge. There are also many approximate conservation laws, which apply to such quantities as mass, parity, lepton number, baryon number, strangeness, hypercharge, etc. These quantities are conserved in certain classes of physics processes, but not in all. A local conservation law is usually expressed mathematically as a continuity equation, a partial differential equation which gives a relation between the amount of the quantity and the "transport" of that quantity. It states that the amount of the conserved quantity at a point or within a volume can only change by the amount of the quantity which flows in or out of the volume. From Noether's theorem, every differentiable symmetry leads to a conservation law. Other conserved quantities can exist as well. Conservation laws are fundamental to our understanding of the physical world, in that they describe which processes can or cannot occur in nature. For example, the conservation law of energy states that the total quantity of energy in an isolated system does not change, though it may change form. In general, the total quantity of the property governed by that law remains unchanged during physical processes. With respect to classical physics, conservation laws include conservation of energy, mass (or matter), linear momentum, angular momentum, and electric charge. With respect to particle physics, particles cannot be created or destroyed except in pairs, where one is ordinary and the other is an antiparticle. With respect to symmetries and invariance principles, three special conservation laws have been described, associated with inversion or reversal of space, time, and charge. Conservation laws are considered to be fundamental laws of nature, with broad application in physics, as well as in other fields such as chemistry, biology, geology, and engineering. Most conservation laws are exact, or absolute, in the sense that they apply to all possible processes. Some conservation laws are partial, in that they hold for some processes but not for others. One particularly important result concerning conservation laws is Noether's theorem, which states that there is a one-to-one correspondence between each one of them and a differentiable symmetry of nature. For example, the conservation of energy follows from the time-invariance of physical systems, and the conservation of angular momentum arises from the fact that physical systems behave the same regardless of how they are oriented in space. A partial listing of physical conservation equations due to symmetry that are said to be exact laws, or more precisely have never been proven to be violated: Another exact symmetry is CPT symmetry, the simultaneous inversion of space and time coordinates, together with swapping all particles with their antiparticles; however being a discrete symmetry Noether's theorem does not apply to it. Accordingly the conserved quantity, CPT parity, can usually not be meaningfully calculated or determined. There are also approximate conservation laws. These are approximately true in particular situations, such as low speeds, short time scales, or certain interactions. The total amount of some conserved quantity in the universe could remain unchanged if an equal amount were to appear at one point A and simultaneously disappear from another separate point B. For example, an amount of energy could appear on Earth without changing the total amount in the Universe if the same amount of energy were to disappear from some other region of the Universe. This weak form of "global" conservation is really not a conservation law because it is not Lorentz invariant, so phenomena like the above do not occur in nature. Due to special relativity, if the appearance of the energy at A and disappearance of the energy at B are simultaneous in one inertial reference frame, they will not be simultaneous in other inertial reference frames moving with respect to the first. In a moving frame one will occur before the other; either the energy at A will appear before or after the energy at B disappears. In both cases, during the interval energy will not be conserved. A stronger form of conservation law requires that, for the amount of a conserved quantity at a point to change, there must be a flow, or flux of the quantity into or out of the point. For example, the amount of electric charge at a point is never found to change without an electric current into or out of the point that carries the difference in charge. Since it only involves continuous local changes, this stronger type of conservation law is Lorentz invariant; a quantity conserved in one reference frame is conserved in all moving reference frames. This is called a local conservation law. Local conservation also implies global conservation; that the total amount of the conserved quantity in the Universe remains constant. All of the conservation laws listed above are local conservation laws. A local conservation law is expressed mathematically by a continuity equation, which states that the change in the quantity in a volume is equal to the total net "flux" of the quantity through the surface of the volume. The following sections discuss continuity equations in general. In continuum mechanics, the most general form of an exact conservation law is given by a continuity equation. For example, conservation of electric charge q is where ∇⋅ is the divergence operator, ρ is the density of q (amount per unit volume), j is the flux of q (amount crossing a unit area in unit time), and t is time. If we assume that the motion u of the charge is a continuous function of position and time, then In one space dimension this can be put into the form of a homogeneous first-order quasilinear hyperbolic equation: where the dependent variable y is called the density of a conserved quantity, and A(y) is called the current Jacobian, and the subscript notation for partial derivatives has been employed. The more general inhomogeneous case: is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable y is called a nonconserved quantity, and the inhomogeneous term s(y,x,t) is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system. In the one-dimensional space a conservation equation is a first-order quasilinear hyperbolic equation that can be put into the advection form: where the dependent variable y(x,t) is called the density of the conserved (scalar) quantity, and a(y) is called the current coefficient, usually corresponding to the partial derivative in the conserved quantity of a current density of the conserved quantity j(y): In this case since the chain rule applies: the conservation equation can be put into the current density form: In a space with more than one dimension the former definition can be extended to an equation that can be put into the form: where the conserved quantity is y(r,t), ⋅ denotes the scalar product, ∇ is the nabla operator, here indicating a gradient, and a(y) is a vector of current coefficients, analogously corresponding to the divergence of a vector current density associated to the conserved quantity j(y): This is the case for the continuity equation: Here the conserved quantity is the mass, with density ρ(r,t) and current density ρu, identical to the momentum density, while u(r, t) is the flow velocity. In the general case a conservation equation can be also a system of this kind of equations (a vector equation) in the form: where y is called the conserved (vector) quantity, ∇y is its gradient, 0 is the zero vector, and A(y) is called the Jacobian of the current density. In fact as in the former scalar case, also in the vector case A(y) usually corresponding to the Jacobian of a current density matrix J(y): and the conservation equation can be put into the form: For example, this the case for Euler equations (fluid dynamics). In the simple incompressible case they are: where: It can be shown that the conserved (vector) quantity and the current density matrix for these equations are respectively: where ⊗ {\displaystyle \otimes } denotes the outer product. Conservation equations can usually also be expressed in integral form: the advantage of the latter is substantially that it requires less smoothness of the solution, which paves the way to weak form, extending the class of admissible solutions to include discontinuous solutions. By integrating in any space-time domain the current density form in 1-D space: and by using Green's theorem, the integral form is: In a similar fashion, for the scalar multidimensional space, the integral form is: where the line integration is performed along the boundary of the domain, in an anticlockwise manner. Moreover, by defining a test function φ(r,t) continuously differentiable both in time and space with compact support, the weak form can be obtained pivoting on the initial condition. In 1-D space it is: In the weak form all the partial derivatives of the density and current density have been passed on to the test function, which with the former hypothesis is sufficiently smooth to admit these derivatives.	[ { "paragraph_id": 0, "text": "In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time. Exact conservation laws include conservation of mass-energy, conservation of linear momentum, conservation of angular momentum, and conservation of electric charge. There are also many approximate conservation laws, which apply to such quantities as mass, parity, lepton number, baryon number, strangeness, hypercharge, etc. These quantities are conserved in certain classes of physics processes, but not in all.", "title": "" }, { "paragraph_id": 1, "text": "A local conservation law is usually expressed mathematically as a continuity equation, a partial differential equation which gives a relation between the amount of the quantity and the \"transport\" of that quantity. It states that the amount of the conserved quantity at a point or within a volume can only change by the amount of the quantity which flows in or out of the volume.", "title": "" }, { "paragraph_id": 2, "text": "From Noether's theorem, every differentiable symmetry leads to a conservation law. Other conserved quantities can exist as well.", "title": "" }, { "paragraph_id": 3, "text": "Conservation laws are fundamental to our understanding of the physical world, in that they describe which processes can or cannot occur in nature. For example, the conservation law of energy states that the total quantity of energy in an isolated system does not change, though it may change form. In general, the total quantity of the property governed by that law remains unchanged during physical processes. With respect to classical physics, conservation laws include conservation of energy, mass (or matter), linear momentum, angular momentum, and electric charge. With respect to particle physics, particles cannot be created or destroyed except in pairs, where one is ordinary and the other is an antiparticle. With respect to symmetries and invariance principles, three special conservation laws have been described, associated with inversion or reversal of space, time, and charge.", "title": "Conservation laws as fundamental laws of nature" }, { "paragraph_id": 4, "text": "Conservation laws are considered to be fundamental laws of nature, with broad application in physics, as well as in other fields such as chemistry, biology, geology, and engineering.", "title": "Conservation laws as fundamental laws of nature" }, { "paragraph_id": 5, "text": "Most conservation laws are exact, or absolute, in the sense that they apply to all possible processes. Some conservation laws are partial, in that they hold for some processes but not for others.", "title": "Conservation laws as fundamental laws of nature" }, { "paragraph_id": 6, "text": "One particularly important result concerning conservation laws is Noether's theorem, which states that there is a one-to-one correspondence between each one of them and a differentiable symmetry of nature. For example, the conservation of energy follows from the time-invariance of physical systems, and the conservation of angular momentum arises from the fact that physical systems behave the same regardless of how they are oriented in space.", "title": "Conservation laws as fundamental laws of nature" }, { "paragraph_id": 7, "text": "A partial listing of physical conservation equations due to symmetry that are said to be exact laws, or more precisely have never been proven to be violated:", "title": "Exact laws" }, { "paragraph_id": 8, "text": "Another exact symmetry is CPT symmetry, the simultaneous inversion of space and time coordinates, together with swapping all particles with their antiparticles; however being a discrete symmetry Noether's theorem does not apply to it. Accordingly the conserved quantity, CPT parity, can usually not be meaningfully calculated or determined.", "title": "Exact laws" }, { "paragraph_id": 9, "text": "There are also approximate conservation laws. These are approximately true in particular situations, such as low speeds, short time scales, or certain interactions.", "title": "Approximate laws" }, { "paragraph_id": 10, "text": "The total amount of some conserved quantity in the universe could remain unchanged if an equal amount were to appear at one point A and simultaneously disappear from another separate point B. For example, an amount of energy could appear on Earth without changing the total amount in the Universe if the same amount of energy were to disappear from some other region of the Universe. This weak form of \"global\" conservation is really not a conservation law because it is not Lorentz invariant, so phenomena like the above do not occur in nature. Due to special relativity, if the appearance of the energy at A and disappearance of the energy at B are simultaneous in one inertial reference frame, they will not be simultaneous in other inertial reference frames moving with respect to the first. In a moving frame one will occur before the other; either the energy at A will appear before or after the energy at B disappears. In both cases, during the interval energy will not be conserved.", "title": "Global and local conservation laws" }, { "paragraph_id": 11, "text": "A stronger form of conservation law requires that, for the amount of a conserved quantity at a point to change, there must be a flow, or flux of the quantity into or out of the point. For example, the amount of electric charge at a point is never found to change without an electric current into or out of the point that carries the difference in charge. Since it only involves continuous local changes, this stronger type of conservation law is Lorentz invariant; a quantity conserved in one reference frame is conserved in all moving reference frames. This is called a local conservation law. Local conservation also implies global conservation; that the total amount of the conserved quantity in the Universe remains constant. All of the conservation laws listed above are local conservation laws. A local conservation law is expressed mathematically by a continuity equation, which states that the change in the quantity in a volume is equal to the total net \"flux\" of the quantity through the surface of the volume. The following sections discuss continuity equations in general.", "title": "Global and local conservation laws" }, { "paragraph_id": 12, "text": "In continuum mechanics, the most general form of an exact conservation law is given by a continuity equation. For example, conservation of electric charge q is", "title": "Differential forms" }, { "paragraph_id": 13, "text": "where ∇⋅ is the divergence operator, ρ is the density of q (amount per unit volume), j is the flux of q (amount crossing a unit area in unit time), and t is time.", "title": "Differential forms" }, { "paragraph_id": 14, "text": "If we assume that the motion u of the charge is a continuous function of position and time, then", "title": "Differential forms" }, { "paragraph_id": 15, "text": "In one space dimension this can be put into the form of a homogeneous first-order quasilinear hyperbolic equation:", "title": "Differential forms" }, { "paragraph_id": 16, "text": "where the dependent variable y is called the density of a conserved quantity, and A(y) is called the current Jacobian, and the subscript notation for partial derivatives has been employed. The more general inhomogeneous case:", "title": "Differential forms" }, { "paragraph_id": 17, "text": "is not a conservation equation but the general kind of balance equation describing a dissipative system. The dependent variable y is called a nonconserved quantity, and the inhomogeneous term s(y,x,t) is the-source, or dissipation. For example, balance equations of this kind are the momentum and energy Navier-Stokes equations, or the entropy balance for a general isolated system.", "title": "Differential forms" }, { "paragraph_id": 18, "text": "In the one-dimensional space a conservation equation is a first-order quasilinear hyperbolic equation that can be put into the advection form:", "title": "Differential forms" }, { "paragraph_id": 19, "text": "where the dependent variable y(x,t) is called the density of the conserved (scalar) quantity, and a(y) is called the current coefficient, usually corresponding to the partial derivative in the conserved quantity of a current density of the conserved quantity j(y):", "title": "Differential forms" }, { "paragraph_id": 20, "text": "In this case since the chain rule applies:", "title": "Differential forms" }, { "paragraph_id": 21, "text": "the conservation equation can be put into the current density form:", "title": "Differential forms" }, { "paragraph_id": 22, "text": "In a space with more than one dimension the former definition can be extended to an equation that can be put into the form:", "title": "Differential forms" }, { "paragraph_id": 23, "text": "where the conserved quantity is y(r,t), ⋅ denotes the scalar product, ∇ is the nabla operator, here indicating a gradient, and a(y) is a vector of current coefficients, analogously corresponding to the divergence of a vector current density associated to the conserved quantity j(y):", "title": "Differential forms" }, { "paragraph_id": 24, "text": "This is the case for the continuity equation:", "title": "Differential forms" }, { "paragraph_id": 25, "text": "Here the conserved quantity is the mass, with density ρ(r,t) and current density ρu, identical to the momentum density, while u(r, t) is the flow velocity.", "title": "Differential forms" }, { "paragraph_id": 26, "text": "In the general case a conservation equation can be also a system of this kind of equations (a vector equation) in the form:", "title": "Differential forms" }, { "paragraph_id": 27, "text": "where y is called the conserved (vector) quantity, ∇y is its gradient, 0 is the zero vector, and A(y) is called the Jacobian of the current density. In fact as in the former scalar case, also in the vector case A(y) usually corresponding to the Jacobian of a current density matrix J(y):", "title": "Differential forms" }, { "paragraph_id": 28, "text": "and the conservation equation can be put into the form:", "title": "Differential forms" }, { "paragraph_id": 29, "text": "For example, this the case for Euler equations (fluid dynamics). In the simple incompressible case they are:", "title": "Differential forms" }, { "paragraph_id": 30, "text": "where:", "title": "Differential forms" }, { "paragraph_id": 31, "text": "It can be shown that the conserved (vector) quantity and the current density matrix for these equations are respectively:", "title": "Differential forms" }, { "paragraph_id": 32, "text": "where ⊗ {\\displaystyle \\otimes } denotes the outer product.", "title": "Differential forms" }, { "paragraph_id": 33, "text": "Conservation equations can usually also be expressed in integral form: the advantage of the latter is substantially that it requires less smoothness of the solution, which paves the way to weak form, extending the class of admissible solutions to include discontinuous solutions. By integrating in any space-time domain the current density form in 1-D space:", "title": "Integral and weak forms" }, { "paragraph_id": 34, "text": "and by using Green's theorem, the integral form is:", "title": "Integral and weak forms" }, { "paragraph_id": 35, "text": "In a similar fashion, for the scalar multidimensional space, the integral form is:", "title": "Integral and weak forms" }, { "paragraph_id": 36, "text": "where the line integration is performed along the boundary of the domain, in an anticlockwise manner.", "title": "Integral and weak forms" }, { "paragraph_id": 37, "text": "Moreover, by defining a test function φ(r,t) continuously differentiable both in time and space with compact support, the weak form can be obtained pivoting on the initial condition. In 1-D space it is:", "title": "Integral and weak forms" }, { "paragraph_id": 38, "text": "In the weak form all the partial derivatives of the density and current density have been passed on to the test function, which with the former hypothesis is sufficiently smooth to admit these derivatives.", "title": "Integral and weak forms" } ]	In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time. Exact conservation laws include conservation of mass-energy, conservation of linear momentum, conservation of angular momentum, and conservation of electric charge. There are also many approximate conservation laws, which apply to such quantities as mass, parity, lepton number, baryon number, strangeness, hypercharge, etc. These quantities are conserved in certain classes of physics processes, but not in all. A local conservation law is usually expressed mathematically as a continuity equation, a partial differential equation which gives a relation between the amount of the quantity and the "transport" of that quantity. It states that the amount of the conserved quantity at a point or within a volume can only change by the amount of the quantity which flows in or out of the volume. From Noether's theorem, every differentiable symmetry leads to a conservation law. Other conserved quantities can exist as well.	2002-02-25T15:51:15Z	2023-11-01T13:52:16Z	[ "Template:Short description", "Template:Rp", "Template:Cite book", "Template:Math", "Template:Mvar", "Template:Reflist", "Template:Commonscatinline", "Template:Authority control", "Template:About", "Template:Unreferenced section", "Template:See also" ]	https://en.wikipedia.org/wiki/Conservation_law
6,959	Chord	Chord may refer to: Chord may also refer to: The Chords may refer to: Chords may refer to:	[ { "paragraph_id": 0, "text": "Chord may refer to:", "title": "" }, { "paragraph_id": 1, "text": "Chord may also refer to:", "title": "" }, { "paragraph_id": 2, "text": "The Chords may refer to:", "title": "" }, { "paragraph_id": 3, "text": "Chords may refer to:", "title": "" } ]	Chord may refer to: Chord (music), an aggregate of musical pitches sounded simultaneously Guitar chord a chord played on a guitar, which has a particular tuning Chord (geometry), a line segment joining two points on a curve Chord (astronomy), a line crossing a foreground astronomical object during an occultation which gives an indication of the object's size and/or shape Chord, an edge joining two nonadjacent nodes in a cycle Chord in truss construction – an outside member of a truss, as opposed to the inner "webbed members" Chord (aeronautics), the distance between the front and back of a wing, measured in the direction of the normal airflow. The term chord was selected due to the curved nature of the wing's surface Chord (peer-to-peer), a peer-to-peer protocol and algorithm for distributed hash tables (DHT) Chord (concurrency), a concurrency construct in some object-oriented programming languages In British railway terminology, a chord can refer to a short curve of track connecting two otherwise unconnected railway lines. Andrew Chord, a comic book character who is the former mentor of the New Warriors Chord Overstreet, American actor and musician Canadian Hydrogen Observatory and Radio-transient Detector (CHORD), a proposed successor to the CHIME radio telescope The Chord (painting), a c.1715 painting by Antoine Watteau Chord may also refer to: Mouse chording or a chorded keyboard, where multiple buttons are held down simultaneously to produce a specific action The Chords may refer to: The Chords, 1970s British mod revival band The Chords, 1950s American doo-wop group Chords may refer to: Chords (musician), a Swedish hiphop/reggae artist		2022-11-04T08:27:26Z	[ "Template:Wiktionary", "Template:Lookfrom", "Template:Intitle", "Template:Disambiguation" ]	https://en.wikipedia.org/wiki/Chord
6,960	Car Talk	Car Talk refers to the work of Click and Clack, the Tappet Brothers, Tom and Ray Magliozzi, that includes a website, and a podcast of reruns that is currently hosted by Apple Podcasts, NPR Podcasts, and Sticher. Car Talk was originally a radio show that ran on National Public Radio (NPR) from 1977 until October 2012, when the Magliozzi brothers retired. Tom died on November 3, 2014, aged 77, in Belmont, Massachusetts, of complications from Alzheimer's disease. The Car Talk radio show was honored with a Peabody Award in 1992, and the Magliozzis were both inducted into the National Radio Hall of Fame in 2014 and the Automotive Hall of Fame in 2018. Car Talk was presented in the form of a call-in radio show: listeners called in with questions related to motor vehicle maintenance and repair. Most of the advice sought was diagnostic, with callers describing symptoms and demonstrating sounds of an ailing vehicle while the Magliozzis made an attempt to identify the malfunction over the telephone and give advice on how to fix it. While the hosts peppered their call-in sessions with jokes directed at both the caller and at themselves, the Magliozzis were usually able to arrive at a diagnosis. However, when they were stumped, they attempted anyway with an answer they claimed was "unencumbered by the thought process", the official motto of the show. Edited reruns are carried on XM Satellite Radio via both the Public Radio and NPR Now channels. The Car Talk theme music was "Dawggy Mountain Breakdown" by bluegrass artist David Grisman. Throughout the program, listeners were encouraged to dial the toll-free telephone number, 1-888-CAR-TALK (1-888-227-8255), which connected to a 24-hour answering service. Although the approximately 2,000 queries received each week were screened by the Car Talk staff, the questions were unknown to the Magliozzis in advance as "that would entail researching the right answer, which is what? ... Work." In 1977, radio station WBUR-FM in Boston scheduled a panel of local car mechanics to discuss car repairs on one of its programs, but only Tom Magliozzi showed up. He did so well that he was asked to return as a guest, and he invited his younger brother Ray (who was actually more of a car repair expert) to join him. The brothers were soon asked to host their own radio show on WBUR, which they continued to do every week. In 1986, NPR decided to distribute their show nationally. In 1989, the brothers started a newspaper column Click and Clack Talk Cars which, like the radio show, mixed serious advice with humor. King Features distributes the column. Ray Magliozzi continues to write the column, retitled Car Talk, after his brother's death in 2014, knowing he would have wanted the advice and humor to continue. In 1992, Car Talk won a Peabody Award, saying "Each week, master mechanics Tom and Ray Magliozzi provide useful information about preserving and protecting our cars. But the real core of this program is what it tells us about human mechanics ... The insight and laughter provided by Messrs. Magliozzi, in conjunction with their producer Doug Berman, provide a weekly mental tune-up for a vast and ever-growing public radio audience." In 2005, Tom and Ray Magliozzi founded the Car Talk Vehicle Donation Program, "as a way to give back to the stations that were our friends and partners for decades — and whose programs we listen to every day." Since the Car Talk Vehicle Donation Program was founded, over 40,000 vehicles have been donated to support local NPR stations and programs, with over $40 million donated. Approximately 70% of the proceeds generated go directly toward funding local NPR affiliates and programs. As of 2012, it had 3.3 million listeners each week, on about 660 stations. On June 8, 2012, the brothers announced that they would no longer broadcast new episodes as of October. Executive producer Doug Berman said the best material from 25 years of past shows would be used to put together "repurposed" shows for NPR to broadcast. Berman estimated the archives contain enough for eight years' worth of material before anything would have to be repeated. Ray Magliozzi, however, would occasionally record new taglines and sponsor announcements that were aired at the end of the show. The show was inducted into the National Radio Hall of Fame in 2014. Ray Magliozzi hosted a special Car Talk memorial episode for his brother Tom after he died in November 2014. However, Ray continued to write their syndicated newspaper column, saying that his brother would want him to. The Best of Car Talk episodes ended their weekly broadcast on NPR on September 30, 2017, although past episodes would continue availability online and via podcasts. 120 of the 400 stations intended to continue airing the show. NPR announced one option for the time slot would be their new news-talk program It's Been a Minute. On June 11, 2021, it was announced that radio distribution of Car Talk would officially end on October 1, 2021, and that NPR would begin distribution of a twice-weekly podcast that will be 35–40 minutes in length and include early versions of every show, in sequential order. The Magliozzis were long-time auto mechanics. Ray Magliozzi has a Bachelor of Science degree in humanities and science from MIT, while Tom had a Bachelor of Science degree in economics from MIT, an MBA from Northeastern University, and a DBA from the Boston University School of Management. The Magliozzis operated a do-it-yourself garage together in the 1970s which became more of a conventional repair shop in the 1980s. Ray continued to have a hand in the day-to-day operations of the shop for years, while his brother Tom semi-retired, often joking on Car Talk about his distaste for doing "actual work". The show's offices were located near their shop at the corner of JFK Street and Brattle Street in Harvard Square, marked as "Dewey, Cheetham & Howe", the imaginary law firm to which they referred on-air. DC&H doubled as the business name of Tappet Brothers Associates, the corporation established to manage the business end of Car Talk. Initially a joke, the company was incorporated after the show expanded from a single station to national syndication. The two were commencement speakers at MIT in 1999. Executive producer Doug Berman said in 2012, "The guys are culturally right up there with Mark Twain and the Marx Brothers. They will stand the test of time. People will still be enjoying them years from now. They're that good." Tom Magliozzi died on November 3, 2014, at age 77, due to complications from Alzheimer's disease. The show was the inspiration for the short-lived The George Wendt Show, which briefly aired on CBS in the 1994-1995 season as a mid-season replacement. In July 2007, PBS announced that it had green-lit an animated adaptation of Car Talk, to air on prime-time in 2008. The show, titled Click and Clack's As the Wrench Turns is based on the adventures of the fictional "Click and Clack" brothers' garage at "Car Talk Plaza". The ten episodes aired in July and August 2008. Car Talk: The Musical!!! was written and directed by Wesley Savick, and composed by Michael Wartofsky. The adaptation was presented by Suffolk University, and opened on March 31, 2011, at the Modern Theatre in Boston, Massachusetts. The play was not officially endorsed by the Magliozzis, but they participated in the production, lending their voices to a central puppet character named "The Wizard of Cahs". At the end of the show, Ray warns the audience, "Don't drive like my brother!" to which Tom replies, "And don't drive like my brother!" The original tag line was "Don't drive like a knucklehead!" There were variations such as, "Don't drive like my brother ..." "And don't drive like his brother!" and "Don't drive like my sister ..." "And don't drive like my sister!" The tagline was heard in the Pixar film Cars, in which Tom and Ray voiced anthropomorphized vehicles (Rusty and Dusty Rust-eze, respectively a 1963 Dodge Dart and 1963 Dodge A100 van, as Lightning McQueen's racing sponsors) with personalities similar to their own on-air personae. Tom notoriously once owned a "convertible, green with large areas of rust!" Dodge Dart, known jokingly on the program by the faux-elegant name "Dartre".	[ { "paragraph_id": 0, "text": "Car Talk refers to the work of Click and Clack, the Tappet Brothers, Tom and Ray Magliozzi, that includes a website, and a podcast of reruns that is currently hosted by Apple Podcasts, NPR Podcasts, and Sticher. Car Talk was originally a radio show that ran on National Public Radio (NPR) from 1977 until October 2012, when the Magliozzi brothers retired. Tom died on November 3, 2014, aged 77, in Belmont, Massachusetts, of complications from Alzheimer's disease.", "title": "" }, { "paragraph_id": 1, "text": "The Car Talk radio show was honored with a Peabody Award in 1992, and the Magliozzis were both inducted into the National Radio Hall of Fame in 2014 and the Automotive Hall of Fame in 2018.", "title": "" }, { "paragraph_id": 2, "text": "Car Talk was presented in the form of a call-in radio show: listeners called in with questions related to motor vehicle maintenance and repair. Most of the advice sought was diagnostic, with callers describing symptoms and demonstrating sounds of an ailing vehicle while the Magliozzis made an attempt to identify the malfunction over the telephone and give advice on how to fix it. While the hosts peppered their call-in sessions with jokes directed at both the caller and at themselves, the Magliozzis were usually able to arrive at a diagnosis. However, when they were stumped, they attempted anyway with an answer they claimed was \"unencumbered by the thought process\", the official motto of the show.", "title": "Premise" }, { "paragraph_id": 3, "text": "Edited reruns are carried on XM Satellite Radio via both the Public Radio and NPR Now channels.", "title": "Premise" }, { "paragraph_id": 4, "text": "The Car Talk theme music was \"Dawggy Mountain Breakdown\" by bluegrass artist David Grisman.", "title": "Premise" }, { "paragraph_id": 5, "text": "Throughout the program, listeners were encouraged to dial the toll-free telephone number, 1-888-CAR-TALK (1-888-227-8255), which connected to a 24-hour answering service. Although the approximately 2,000 queries received each week were screened by the Car Talk staff, the questions were unknown to the Magliozzis in advance as \"that would entail researching the right answer, which is what? ... Work.\"", "title": "Premise" }, { "paragraph_id": 6, "text": "", "title": "Premise" }, { "paragraph_id": 7, "text": "In 1977, radio station WBUR-FM in Boston scheduled a panel of local car mechanics to discuss car repairs on one of its programs, but only Tom Magliozzi showed up. He did so well that he was asked to return as a guest, and he invited his younger brother Ray (who was actually more of a car repair expert) to join him. The brothers were soon asked to host their own radio show on WBUR, which they continued to do every week. In 1986, NPR decided to distribute their show nationally.", "title": "History" }, { "paragraph_id": 8, "text": "In 1989, the brothers started a newspaper column Click and Clack Talk Cars which, like the radio show, mixed serious advice with humor. King Features distributes the column. Ray Magliozzi continues to write the column, retitled Car Talk, after his brother's death in 2014, knowing he would have wanted the advice and humor to continue.", "title": "History" }, { "paragraph_id": 9, "text": "In 1992, Car Talk won a Peabody Award, saying \"Each week, master mechanics Tom and Ray Magliozzi provide useful information about preserving and protecting our cars. But the real core of this program is what it tells us about human mechanics ... The insight and laughter provided by Messrs. Magliozzi, in conjunction with their producer Doug Berman, provide a weekly mental tune-up for a vast and ever-growing public radio audience.\"", "title": "History" }, { "paragraph_id": 10, "text": "In 2005, Tom and Ray Magliozzi founded the Car Talk Vehicle Donation Program, \"as a way to give back to the stations that were our friends and partners for decades — and whose programs we listen to every day.\" Since the Car Talk Vehicle Donation Program was founded, over 40,000 vehicles have been donated to support local NPR stations and programs, with over $40 million donated. Approximately 70% of the proceeds generated go directly toward funding local NPR affiliates and programs.", "title": "History" }, { "paragraph_id": 11, "text": "As of 2012, it had 3.3 million listeners each week, on about 660 stations. On June 8, 2012, the brothers announced that they would no longer broadcast new episodes as of October. Executive producer Doug Berman said the best material from 25 years of past shows would be used to put together \"repurposed\" shows for NPR to broadcast. Berman estimated the archives contain enough for eight years' worth of material before anything would have to be repeated. Ray Magliozzi, however, would occasionally record new taglines and sponsor announcements that were aired at the end of the show.", "title": "History" }, { "paragraph_id": 12, "text": "The show was inducted into the National Radio Hall of Fame in 2014.", "title": "History" }, { "paragraph_id": 13, "text": "Ray Magliozzi hosted a special Car Talk memorial episode for his brother Tom after he died in November 2014. However, Ray continued to write their syndicated newspaper column, saying that his brother would want him to.", "title": "History" }, { "paragraph_id": 14, "text": "The Best of Car Talk episodes ended their weekly broadcast on NPR on September 30, 2017, although past episodes would continue availability online and via podcasts. 120 of the 400 stations intended to continue airing the show. NPR announced one option for the time slot would be their new news-talk program It's Been a Minute.", "title": "History" }, { "paragraph_id": 15, "text": "On June 11, 2021, it was announced that radio distribution of Car Talk would officially end on October 1, 2021, and that NPR would begin distribution of a twice-weekly podcast that will be 35–40 minutes in length and include early versions of every show, in sequential order.", "title": "History" }, { "paragraph_id": 16, "text": "The Magliozzis were long-time auto mechanics. Ray Magliozzi has a Bachelor of Science degree in humanities and science from MIT, while Tom had a Bachelor of Science degree in economics from MIT, an MBA from Northeastern University, and a DBA from the Boston University School of Management.", "title": "Hosts" }, { "paragraph_id": 17, "text": "The Magliozzis operated a do-it-yourself garage together in the 1970s which became more of a conventional repair shop in the 1980s. Ray continued to have a hand in the day-to-day operations of the shop for years, while his brother Tom semi-retired, often joking on Car Talk about his distaste for doing \"actual work\". The show's offices were located near their shop at the corner of JFK Street and Brattle Street in Harvard Square, marked as \"Dewey, Cheetham & Howe\", the imaginary law firm to which they referred on-air. DC&H doubled as the business name of Tappet Brothers Associates, the corporation established to manage the business end of Car Talk. Initially a joke, the company was incorporated after the show expanded from a single station to national syndication.", "title": "Hosts" }, { "paragraph_id": 18, "text": "The two were commencement speakers at MIT in 1999.", "title": "Hosts" }, { "paragraph_id": 19, "text": "Executive producer Doug Berman said in 2012, \"The guys are culturally right up there with Mark Twain and the Marx Brothers. They will stand the test of time. People will still be enjoying them years from now. They're that good.\"", "title": "Hosts" }, { "paragraph_id": 20, "text": "Tom Magliozzi died on November 3, 2014, at age 77, due to complications from Alzheimer's disease.", "title": "Hosts" }, { "paragraph_id": 21, "text": "The show was the inspiration for the short-lived The George Wendt Show, which briefly aired on CBS in the 1994-1995 season as a mid-season replacement.", "title": "Adaptations" }, { "paragraph_id": 22, "text": "In July 2007, PBS announced that it had green-lit an animated adaptation of Car Talk, to air on prime-time in 2008. The show, titled Click and Clack's As the Wrench Turns is based on the adventures of the fictional \"Click and Clack\" brothers' garage at \"Car Talk Plaza\". The ten episodes aired in July and August 2008.", "title": "Adaptations" }, { "paragraph_id": 23, "text": "Car Talk: The Musical!!! was written and directed by Wesley Savick, and composed by Michael Wartofsky. The adaptation was presented by Suffolk University, and opened on March 31, 2011, at the Modern Theatre in Boston, Massachusetts. The play was not officially endorsed by the Magliozzis, but they participated in the production, lending their voices to a central puppet character named \"The Wizard of Cahs\".", "title": "Adaptations" }, { "paragraph_id": 24, "text": "At the end of the show, Ray warns the audience, \"Don't drive like my brother!\" to which Tom replies, \"And don't drive like my brother!\" The original tag line was \"Don't drive like a knucklehead!\" There were variations such as, \"Don't drive like my brother ...\" \"And don't drive like his brother!\" and \"Don't drive like my sister ...\" \"And don't drive like my sister!\" The tagline was heard in the Pixar film Cars, in which Tom and Ray voiced anthropomorphized vehicles (Rusty and Dusty Rust-eze, respectively a 1963 Dodge Dart and 1963 Dodge A100 van, as Lightning McQueen's racing sponsors) with personalities similar to their own on-air personae. Tom notoriously once owned a \"convertible, green with large areas of rust!\" Dodge Dart, known jokingly on the program by the faux-elegant name \"Dartre\".", "title": "Adaptations" } ]	Car Talk refers to the work of Click and Clack, the Tappet Brothers, Tom and Ray Magliozzi, that includes a website, and a podcast of reruns that is currently hosted by Apple Podcasts, NPR Podcasts, and Sticher. Car Talk was originally a radio show that ran on National Public Radio (NPR) from 1977 until October 2012, when the Magliozzi brothers retired. Tom died on November 3, 2014, aged 77, in Belmont, Massachusetts, of complications from Alzheimer's disease. The Car Talk radio show was honored with a Peabody Award in 1992, and the Magliozzis were both inducted into the National Radio Hall of Fame in 2014 and the Automotive Hall of Fame in 2018.	2001-10-31T22:10:02Z	2023-11-23T16:39:02Z	[ "Template:Anchor", "Template:Main article", "Template:Cite web", "Template:Cite press release", "Template:Official website", "Template:Use mdy dates", "Template:Infobox radio show", "Template:See also", "Template:Cbignore", "Template:Redirect", "Template:Reflist", "Template:Cite journal", "Template:Wikiquote", "Template:NPR", "Template:Short description", "Template:IMDb title", "Template:Cite news" ]	https://en.wikipedia.org/wiki/Car_Talk
6,962	Council of Chalcedon	The Council of Chalcedon (/kælˈsiːdən, ˈkælsɪdɒn/; Latin: Concilium Chalcedonense) was the fourth ecumenical council of the Christian Church. It was convoked by the Roman emperor Marcian. The council convened in the city of Chalcedon, Bithynia (modern-day Kadıköy, Istanbul, Turkey) from 8 October to 1 November 451 AD. The council was attended by over 520 bishops or their representatives, making it the largest and best-documented of the first seven ecumenical councils. The principal purpose of the council was to re-assert the teachings of the ecumenical Council of Ephesus against the teachings of Eutyches and Nestorius. Such doctrines viewed Christ's divine and human natures as separate (Nestorianism) or viewed Christ as solely divine (Monophysitism). As recorded by American Christian scholar Jaroslav Pelikan, it was stated: We all teach harmoniously [that he is] the same perfect in godhead, the same perfect in manhood, truly God and truly man, the same of a reasonable soul and body; homoousios with the Father in godhead, and the same homoousios with us in manhood ... acknowledged in two natures without confusion, without change, without division, without separation. Whilst this judgment marked a significant turning point in the Christological debates, it also generated heated disagreements between the council and the Oriental Orthodox Church, who did not agree with such conduct or proceedings. This disagreement would later inform the separation of the Oriental Orthodox Churches from the rest of Christianity, and led to the council being regarded as "Chalcedon, the Ominous". The council's other responsibilities included addressing controversy, dealing with issues such as ecclesiastical discipline and jurisdiction, and approving Statements of Belief such as the Creed of Nicaea (325), the Creed of Constantinople (381, subsequently known as the Nicene Creed), two letters of St. Cyril of Alexandria against Nestorius, and the Tome of Pope Leo I. The Christology of the Church of the East may be called "non-Ephesine" for not accepting the Council of Ephesus, but did finally gather to ratify the Council of Chalcedon at the Synod of Mar Aba I in 544. Through the 1994 Common Christological Declaration between the Catholic Church and the Assyrian Church of the East, the Assyrian Church of the East accepted and confessed the same doctrine of Christology as the Catholic Church; it can be considered here that the Assyrian Church of the East accepted the Council of Ephesus. In 325, the first ecumenical council (First Council of Nicaea) determined that Jesus Christ was God, "consubstantial" with the Father, and rejected the Arian contention that Jesus was a created being. This was reaffirmed at the First Council of Constantinople (381) and the First Council of Ephesus (431). About two years after Cyril of Alexandria's death in 444, an aged monk from Constantinople named Eutyches began teaching a subtle variation on the traditional Christology in an attempt to stop what he saw as a new outbreak of Nestorianism. He claimed to be a faithful follower of Cyril's teaching, which was declared orthodox in the Union of 433. Cyril had taught that "There is only one physis, since it is the Incarnation, of God the Word." Cyril apparently thought that the Greek word physis meant approximately what the Latin word persona (person) means, while most Greek theologians would have interpreted that word to mean natura (nature). The energy and imprudence with which Eutyches asserted his opinions led to his being misunderstood. Thus, many believed that Eutyches was advocating Docetism, a sort of reversal of Arianism – where Arius had denied the consubstantial divinity of Jesus, Eutyches seemed to be denying that Jesus was fully human. Pope Leo I wrote that Eutyches' error seemed to be more from a lack of skill than from malice. Eutyches had been accusing various personages of covert Nestorianism. In November 448, Flavian, Bishop of Constantinople held a local synod regarding a point of discipline connected with the province of Sardis. At the end of the session of this synod one of those inculpated, Eusebius, Bishop of Dorylaeum, brought a counter charge of heresy against the archimandrite. Eusebius demanded that Eutyches be removed from office. Flavian preferred that the bishop and the archimandrite sort out their differences, but as his suggestion went unheeded, Eutyches was summoned to clarify his position regarding the nature of Christ. Eventually Eutyches reluctantly appeared, but his position was considered to be theologically unsophisticated, and the synod finding his answers unresponsive condemned and exiled him. Flavian sent a full account to Pope Leo I. Although it had been accidentally delayed, Leo wrote a compendious explanation of the whole doctrine involved, and sent it to Flavian as a formal and authoritative decision of the question. Eutyches appealed against the decision, labeling Flavian a Nestorian, and received the support of Pope Dioscorus I of Alexandria. John Anthony McGuckin sees an "innate rivalry" between the Sees of Alexandria and Constantinople. Dioscurus, imitating his predecessors in assuming a primacy over Constantinople, held his own synod which annulled the sentence of Flavian, and absolved Eutyches. Through the influence of the court official Chrysaphius, godson of Eutyches, in 449, the competing claims between the Patriarchs of Constantinople and Alexandria led Emperor Theodosius II to call a council which was held in Ephesus in 449, with Dioscorus presiding. Pope Leo sent four legates to represent him and expressed his regret that the shortness of the notice must prevent the presence of any other bishop of the West. He provided his legates, one of whom died en route, with a letter addressed to Flavian explaining Rome's position in the controversy. Leo's letter, now known as Leo's Tome, confessed that Christ had two natures, and was not of or from two natures. On August 8, 449 the Second Council of Ephesus began its first session. The Acts of the first session of this synod were read at the Council of Chalcedon, 451, and are thus preserved. The remainder of the Acts (the first session being wanting) are known through a Syriac translation by a Miaphysite monk, written in the year 535 and published from a manuscript in the British Museum. Nonetheless, there are somewhat different interpretations as to what actually transpired. The question before the council by order of the emperor was whether Flavian, in a synod held by him at Constantinople in November, 448, had justly deposed and excommunicated the Archimandrite Eutyches for refusing to admit two natures in Christ. Dioscorus began the council by banning all members of the November 448 synod which had deposed Eutyches from sitting as judges. He then introduced Eutyches who publicly professed that while Christ had two natures before the incarnation, the two natures had merged to form a single nature after the incarnation. Of the 130 assembled bishops, 111 voted to rehabilitate Eutyches. Throughout these proceedings, Hilary (one of the papal legates) repeatedly called for the reading of Leo's Tome, but was ignored. The Eastern Orthodox Church has very different accounts of The Second Council of Ephesus. Pope Dioscorus requested deferring reading of Leo's Tome, as it was not seen as necessary to start with, and could be read later. This was seen as a rebuke to the representatives from the Church of Rome not reading the Tome from the start. Dioscorus then moved to depose Flavian of Constantinople and Eusebius of Dorylaeum on the grounds that they taught the Word had been made flesh and not just assumed flesh from the Virgin and that Christ had two natures. When Flavian and Hilary objected, Dioscorus called for a pro-monophysite mob to enter the church which assaulted Flavian as he clung to the altar. Flavian died three days later. Dioscorus then placed Eusebius of Dorylaeum under arrest and demanded the assembled bishops approve his actions. Fearing the mob, they all did. The papal legates refused to attend the second session at which several more orthodox bishops were deposed, including Ibas of Edessa, Irenaeus of Tyre, Domnus of Antioch, and Theodoret. Dioscorus then had Cyril of Alexandria's Twelve Anathemas declared orthodox with the intent of condemning any confession other than one nature in Christ. According to a letter to the Empress Pulcheria collected among the letters of Leo I, Hilary apologized for not delivering to her the pope's letter after the synod, but owing to Dioscurus, who tried to hinder his going either to Rome or to Constantinople, he had great difficulty in making his escape in order to bring to the pontiff the news of the result of the council. Hilary, who later became pope and dedicated an oratory in the Lateran Basilica in thanks for his life, managed to escape from Constantinople and brought news of the council to Leo who immediately dubbed it a "synod of robbers" – Latrocinium – and refused to accept its pronouncements. The decisions of this council now threatened schism between the East and the West. The claims that bishops being forced to approve actions, were challenged by Pope Dioscorus and the Egyptian Bishops at Chalcedon. The situation continued to deteriorate, with Leo demanding the convocation of a new council and Emperor Theodosius II refusing to budge, all the while appointing bishops in agreement with Dioscorus. All this changed dramatically with the Emperor's death and the elevation of Marcian to the imperial throne. To resolve the simmering tensions, Marcian announced his intention to hold a new council to set aside the 449 Second Council of Ephesus which was named the "Latrocinium" or "Robber Council" by Pope Leo. Pulcheria, the sister of Theodosius, may have influenced this decision, or even made the convention of a council a requirement during her negotiations with Aspar, the magister militum, to marry Marcian. Leo had pressed for it to take place in Italy, but Emperor Marcian instead called for it to convene at Chalcedon, because it was closer to Constantinople, and would thus allow him to respond quickly to any events along the Danube, which was being raided by the Huns under Attila. The council opened on October 8, 451. Marcian had the bishops deposed by Dioscorus returned to their dioceses and had the body of Flavian brought to the capital to be buried honorably. The Emperor asked Leo to preside over the council, but Leo again chose to send legates in his place. This time, Bishops Paschasinus of Lilybaeum and Julian of Cos and two priests Boniface and Basil represented the western church at the council. The council was attended by about 520 bishops or their representatives and was the largest and best-documented of the first seven ecumenical councils. All the sessions were held in the church of St. Euphemia, Martyr, outside the city and directly opposite Constantinople. As to the number of sessions held by the Council of Chalcedon there is a great discrepancy in the various texts of the Acts, also in the ancient historians of the council. Either the respective manuscripts must have been incomplete; or the historians passed over in silence several sessions held for secondary purposes. According to the deacon Rusticus, there were in all sixteen sessions; this division is commonly accepted by scholars, including Karl Josef von Hefele, historian of the councils. If all the separate meetings were counted, there would be twenty-one sessions; several of these meetings, however, are considered as supplementary to preceding sessions. Paschasinus refused to give Dioscorus (who had excommunicated Leo leading up to the council) a seat at the council. As a result, he was moved to the nave of the church. Paschasinus further ordered the reinstatement of Theodoret and that he be given a seat, but this move caused such an uproar among the council fathers, that Theodoret also sat in the nave, though he was given a vote in the proceedings, which began with a trial of Dioscorus. Marcian wished to bring proceedings to a speedy end, and asked the council to make a pronouncement on the doctrine of the Incarnation before continuing the trial. The council fathers, however, felt that no new creed was necessary, and that the doctrine had been laid out clearly in Leo's Tome. They were also hesitant to write a new creed as the First Council of Ephesus had forbidden the composition or use of any new creed. Aetius, deacon of Constantinople then read Cyril's letter to Nestorius, and a second letter to John of Antioch. The bishops responded, "We all so believe: Pope Leo thus believes ... we all thus believe. As Cyril so believe we, all of us: eternal be the memory of Cyril: as the epistles of Cyril teach such is our mind, such has been our faith: such is our faith: this is the mind of Archbishop Leo, so he believes, so he has written." Beronician, clerk of the consistory, then read from a book handed him by Aetius, the synodical letter of Leo to Flavian (Leo's Tome). After the reading of the letter, the bishops cried out: "This is the faith of the fathers, this is the faith of the Apostles. So we all believe, thus the orthodox believe. ...Peter has spoken thus through Leo. So taught the Apostles. Piously and truly did Leo teach, so taught Cyril. Everlasting be the memory of Cyril. Leo and Cyril taught the same thing, ...This is the true faith...This is the faith of the fathers. Why were not these things read at Ephesus?" However, during the reading of Leo's Tome, three passages were challenged as being potentially Nestorian, and their orthodoxy was defended by using the writings of Cyril. Due to such concerns, the council decided to adjourn and appoint a special committee to investigate the orthodoxy of Leo's Tome, judging it by the standard of Cyril's Twelve Chapters, as some of the bishops present raised concerns about their compatibility. This committee was headed by Anatolius, Patriarch of Constantinople, and was given five days to carefully study the matter. The committee unanimously decided in favor of the orthodoxy of Leo, determining that what he said was compatible with the teaching of Cyril. A number of other bishops also entered statements to the effect that they believed that Leo's Tome was not in contradiction with the teaching of Cyril as well. The council continued with Dioscorus' trial, but he refused to appear before the assembly. However, historical accounts from the Eastern Orthodox Church note that Dioscorus was put under solitary arrest. As a result, he was condemned, but by an underwhelming amount (more than half the bishops present for the previous sessions did not attend his condemnation), and all of his decrees were declared null. Empress Pulcheria (Marcian's wife) told Dioscorus "In my father's time, there was a man who was stubborn (referring to St. John Chrysostom) and you are aware of what was made of him", to which Dioscorus famously responded "And you may recall that your mother prayed at his tomb, as she was bleeding of sickness". Pulcheria is said to have slapped Dioscorus in the face, breaking some of his teeth, and ordered the guards to confine him, which they did pulling his beard hair. Dioscorus is said to have put these in a box and sent them back to his Church in Alexandria noting "this is the fruit of my faith." Marcian responded by exiling Dioscorus. All of the bishops were then asked to sign their assent to the Tome, but a group of thirteen Egyptians refused, saying that they would assent to "the traditional faith". As a result, the Emperor's commissioners decided that a credo would indeed be necessary and presented a text to the fathers. No consensus was reached. Paschasinus threatened to return to Rome to reassemble the council in Italy. Marcian agreed, saying that if a clause were not added to the credo, the bishops would have to relocate. The Committee then sat in the oratory of the most holy martyr Euphemis and afterwards reported a definition of faith which while teaching the same doctrine was not the Tome of Leo. Although it could be reconciled with Cyril's Formula of Reunion, it was not compatible in its wording with Cyril's Twelve Anathemas. In particular, the third anathema reads: "If anyone divides in the one Christ the hypostases after the union, joining them only by a conjunction of dignity or authority or power, and not rather by a coming together in a union by nature, let him be anathema." This appeared to some to be incompatible with Leo's definition of two natures hypostatically joined. However, the council would determine (with the exception of 13 Egyptian bishops) that this was an issue of wording and not of doctrine; a committee of bishops appointed to study the orthodoxy of the Tome using Cyril's letters (which included the twelve anathemas) as their criteria unanimously determined it to be orthodox, and the council, with few exceptions, supported this. It approved the creed of Nicaea (325), the creed of Constantinople (381; subsequently known as the Nicene Creed), two letters of Cyril against Nestorius, which insisted on the unity of divine and human persons in Christ, and the Tome of Pope Leo I confirming two distinct natures in Christ. The dogmatic definitions of the council are recognized as normative by the Eastern Orthodox and Catholic Churches, as well by certain other Western Churches; also, most Protestants agree that the council's teachings regarding the Trinity and the Incarnation are orthodox doctrine which must be adhered to. The council, however, is rejected by the Oriental Orthodox Churches, the latter teaching rather that "The Lord Jesus Christ is God the Incarnate Word. He possesses the perfect Godhead and the perfect manhood. His fully divine nature is united with His fully human nature yet without mixing, blending or alteration." The Oriental Orthodox contend that this latter teaching has been misunderstood as monophysitism, an appellation with which they strongly disagree but, nevertheless, refuse to accept the decrees of the council. Many Anglicans and most Protestants consider it to be the last authoritative ecumenical council. These churches, along with Martin Luther, hold that both conscience and scripture preempt doctrinal councils and generally agree that the conclusions of later councils were unsupported by or contradictory to scripture. The Council of Chalcedon issued the Chalcedonian Definition, which repudiated the notion of a single nature in Christ, and declared that he has two natures in one person and hypostasis. It also insisted on the completeness of his two natures: Godhead and manhood. The council also issued 27 disciplinary canons governing church administration and authority. In a further decree, later known as canon 28, the bishops declared that the See of Constantinople (New Rome) had the patriarchal status with "equal privileges" ("τῶν ἴσων ἀπολαύουσαν" in Greek, "aequalibus privilegiis" in Latin) to the See of Rome. No reference was made in Canon 28 to the bishops of Rome or Constantinople having their authority from being successors to Peter or Andrew respectively. Instead, the stated reasons in the actual text of the Canon that the episcopacy of these cities had been granted their status was the importance of these cities as major cities of the empire of the time. The Confession of Chalcedon provides a clear statement on the two natures of Christ, human and divine: We, then, following the holy Fathers, all with one consent, teach people to confess one and the same Son, our Lord Jesus Christ, the same perfect in Godhead and also perfect in manhood; truly God and truly man, of a reasonable [rational] soul and body; consubstantial [co-essential] with the Father according to the Godhead, and consubstantial with us according to the Manhood; in all things like unto us, without sin; begotten before all ages of the Father according to the Godhead, and in these latter days, for us and for our salvation, born of the Virgin Mary, the Mother of God, according to the Manhood; one and the same Christ, Son, Lord, only begotten, to be acknowledged in two natures, inconfusedly, unchangeably, indivisibly, inseparably; (ἐν δύο φύσεσιν ἀσυγχύτως, ἀτρέπτως, ἀδιαιρέτως, ἀχωρίστως – in duabus naturis inconfuse, immutabiliter, indivise, inseparabiliter) the distinction of natures being by no means taken away by the union, but rather the property of each nature being preserved, and concurring in one Person (prosopon) and one Subsistence (hypostasis), not parted or divided into two persons, but one and the same Son, and only begotten God (μονογενῆ Θεόν), the Word, the Lord Jesus Christ; as the prophets from the beginning [have declared] concerning Him, and the Lord Jesus Christ Himself has taught us, and the Creed of the holy Fathers has handed down to us. The full text of the definition reaffirms the decisions of the Council of Ephesus and the pre-eminence of the Creed of Nicea (325). It also canonises as authoritative two of Cyril of Alexandria's letters and the Tome of Leo written against Eutyches and sent to Archbishop Flavian of Constantinople in 449. The work of the council was completed by a series of 30 disciplinary canons, the Ancient Epitomes of which are: Canon 28 grants equal privileges (isa presbeia) to Constantinople as of Rome because Constantinople is the New Rome as renewed by canon 36 of the Quinisext Council. Pope Leo declared the canon 28 null and void and only approved the canons of the council which were pertaining to faith. Initially, the council indicated their understanding that Pope Leo's ratification was necessary for the canon to be binding, writing, "we have made still another enactment which we have deemed necessary for the maintenance of good order and discipline, and we are persuaded that your Holiness will approve and confirm our decree.... We are confident you will shed upon the Church of Constantinople a ray of that Apostolic splendor which you possess, for you have ever cherished this church, and you are not at all niggardly in imparting your riches to your children. … Vouchsafe then, most Holy and most Blessed Father, to accept what we have done in your name, and in a friendly spirit (hos oikeia te kai phila). For your legates have made a violent stand against it, desiring, no doubt, that this good deed should proceed, in the first instance, from your provident hand. But we, wishing to gratify the pious Christian emperors, and the illustrious Senate, and the capital of the empire, have judged that an Ecumenical Council was the fittest occasion for effecting this measure. Hence we have made bold to confirm the privileges of the afore-mentioned city (tharresantes ekurosamen) as if your holiness had taken the initiative, for we know how tenderly you love your children, and we feel that in honoring the child we have honored its parent.... We have informed you of everything with a view of proving our sincerity, and of obtaining for our labors your confirmation and consent." Following Leo's rejection of the canon, Bishop Anatolius of Constantinople conceded, "Even so, the whole force of confirmation of the acts was reserved for the authority of Your Blessedness. Therefore, let Your Holiness know for certain that I did nothing to further the matter, knowing always that I held myself bound to avoid the lusts of pride and covetousness." However, the Canon has since been viewed as valid by the Eastern Orthodox Church. According to some ancient Greek collections, canons 29 and 30 are attributed to the council: canon 29, which states that an unworthy bishop cannot be demoted but can be removed, is an extract from the minutes of the 19th session; canon 30, which grants the Egyptians time to consider their rejection of Leo's Tome, is an extract from the minutes of the fourth session. In all likelihood an official record of the proceedings was made either during the council itself or shortly afterwards. The assembled bishops informed the pope that a copy of all the "Acta" would be transmitted to him; in March, 453, Pope Leo commissioned Julian of Cos, then at Constantinople, to make a collection of all the Acts and translate them into Latin. Most of the documents, chiefly the minutes of the sessions, were written in Greek; others, e.g. the imperial letters, were issued in both languages; others, again, e.g. the papal letters, were written in Latin. Eventually nearly all of them were translated into both languages. The metropolitan of Jerusalem was given independence from the metropolitan of Antioch and from any other higher-ranking bishop, given what is now known as autocephaly, in the council's seventh session whose "Decree on the Jurisdiction of Jerusalem and Antioch" contains: "the bishop of Jerusalem, or rather the most holy Church which is under him, shall have under his own power the three Palestines". This led to Jerusalem becoming a patriarchate, one of the five patriarchates known as the pentarchy, when the title of "patriarch" was created in 531 by Justinian. The Oxford Dictionary of the Christian Church, s.v. patriarch (ecclesiastical), also calls it "a title dating from the 6th century, for the bishops of the five great sees of Christendom". Merriam-Webster's Encyclopedia of World Religions, says: "Five patriarchates, collectively called the pentarchy, were the first to be recognized by the legislation of the emperor Justinian (reigned 527–565)". In a canon of disputed validity, the Council of Chalcedon also elevated the See of Constantinople to a position "second in eminence and power to the Bishop of Rome". The Council of Nicaea in 325 had noted that the Sees of the Rome, Alexandria and the Antioch, should have primacy over other, lesser dioceses. At the time, the See of Constantinople was not yet of ecclesiastical prominence, but its proximity to the Imperial court gave rise to its importance. The Council of Constantinople in 381 modified the situation somewhat by placing Constantinople second in honor, above Alexandria and Antioch, stating in Canon III, that "the bishop of Constantinople… shall have the prerogative of honor after the bishop of Rome; because Constantinople is New Rome". In the early 5th century, this status was challenged by the bishops of Alexandria, but the Council of Chalcedon confirmed in Canon XXVIII: For the Fathers rightly granted privileges to the throne of old Rome, because it was the royal city. And the One Hundred and Fifty most religious Bishops, actuated by the same consideration, gave equal privileges (ἴσα πρεσβεῖα) to the most holy throne of New Rome, justly judging that the city which is honoured with the Sovereignty and the Senate and enjoys equal privileges with the old imperial Rome, should in ecclesiastical matters also be magnified as she is, and rank next after her. In making their case, the council fathers argued that tradition had accorded "honor" to the see of older Rome because it was the first imperial city. Accordingly, "moved by the same purposes" the fathers "apportioned equal prerogatives to the most holy see of new Rome" because "the city which is honored by the imperial power and senate and enjoying privileges equaling older imperial Rome should also be elevated to her level in ecclesiastical affairs and take second place after her". The framework for allocating ecclesiastical authority advocated by the council fathers mirrored the allocation of imperial authority in the later period of the Roman Empire. The Eastern position could be characterized as being political in nature, as opposed to a doctrinal view. In practice, all Christians East and West addressed the papacy as the See of Peter and Paul or the Apostolic See rather than the See of the Imperial Capital. Rome understands this to indicate that its precedence has always come from its direct lineage from the apostles Peter and Paul rather than its association with Imperial authority. After the passage of the Canon 28, Rome filed a protest against the reduction of honor given to Antioch and Alexandria. However, fearing that withholding Rome's approval would be interpreted as a rejection of the entire council, in 453 the pope confirmed the council's canons while declaring the 28th null and void. This position would change and later be accepted in 1215 at the Fourth Council of the Lateran. The near-immediate result of the council was a major schism. The bishops who were uneasy with the language of Pope Leo's Tome repudiated the council, saying that the acceptance of two physes was tantamount to Nestorianism. Dioscorus of Alexandria advocated miaphysitism and had dominated the Council of Ephesus. Churches that rejected Chalcedon in favor of Ephesus broke off from the rest of the Eastern Church in a schism, the most significant among these being the Church of Alexandria, today known as the Coptic Orthodox Church. The rise of the "so-called" Monophysitism in the East (as branded by the West) was led by the Copts of Egypt. This must be regarded as the outward expression of the growing nationalist trends in that province against the gradual intensification of Byzantine imperialism, soon to reach its consummation during the reign of Emperor Justinian. A significant effect on the Orthodox Christians in Egypt, was a series of persecutions by the Roman (later, Byzantine) empire forcing followers of the Oriental Orthodox Church to claim allegiance to Leo's Tome, or Chalcedon. This led to the martyrdom, persecution and death of thousands of Egyptian saints and bishops till the Arab Conquest of Egypt. As a result, The Council of Chalcedon is referred to as "Chalcedon, the Ominous" among Coptic Egyptians given how it led to Christians persecuting other Christians for the first time in history. Coptic Orthodox Christians continue to distinguish themselves from followers of Chalcedon to this day. Although the theological differences are seen as limited (if non-existent), it is politics, the subsequent persecutions and the power struggles in the Roman Empire, that may have led to the Great Schism, or at least contributed significantly to amplifying it through the centuries. The divisions in the Church weakened the Byzantine Empire's eastern provinces and helped eased the subsequent Sassanian and Arab invasions. Justinian I attempted to bring those monks who still rejected the decision of the Council of Chalcedon into communion with the greater church. The exact time of this event is unknown, but it is believed to have been between 535 and 548. St Abraham of Farshut was summoned to Constantinople and he chose to bring with him four monks. Upon arrival, Justinian summoned them and informed them that they would either accept the decision of the council or lose their positions. Abraham refused to entertain the idea. Theodora tried to persuade Justinian to change his mind, seemingly to no avail. Abraham himself stated in a letter to his monks that he preferred to remain in exile rather than subscribe to a faith contrary to that of Athanasius. They were not alone, and the non-Chalcedon churches compose Oriental Orthodoxy, with the Church of Alexandria as their primus inter pares. Only in recent years has a degree of rapprochement between Chalcedonian Christians and the Oriental Orthodox been seen. Several Oriental Orthodox Church historians have viewed the council as a dispute with the Church of Rome over precedence among the various patriarchal sees. Coptic sources, both in Coptic and in Arabic, suggest that questions of political and ecclesiastical authority exaggerated differences between the two professions of faith. The Eastern Orthodox Church commemorates the "Holy Fathers of the 4th Ecumenical Council, who assembled in Chalcedon" on the Sunday on or after July 13; however, in some places (e.g., Russia) on that date is rather a feast of the Fathers of the First Six Ecumenical Councils. For both of the above complete propers have been composed and are found in the Menaion. For the former "The Office of the 630 Holy and God-bearing Fathers of the 4th ... Summoned against the Monophysites Eftyches and Dioskoros ..." was composed in the middle of the 14th century by Patriarch Philotheus I of Constantinople. This contains numerous hymns exposing the council's teaching, commemorating its leaders whom it praises and whose prayers it implores, and naming its opponents pejoratively, e.g., "Come let us clearly reject the errors of ... but praise in divine songs the fourth council of pious fathers." For the latter the propers are titled "We Commemorate Six Holy Ecumenical Councils". This repeatedly damns those anathematized by the councils with such rhetoric as "Christ-smashing deception enslaved Nestorius" and "mindless Arius and ... is tormented in the fires of Gehenna ..." while the fathers of the councils are praised and the dogmas of the councils are expounded in the hymns therein. This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). "Council of Chalcedon". Catholic Encyclopedia. New York: Robert Appleton Company.	[ { "paragraph_id": 0, "text": "The Council of Chalcedon (/kælˈsiːdən, ˈkælsɪdɒn/; Latin: Concilium Chalcedonense) was the fourth ecumenical council of the Christian Church. It was convoked by the Roman emperor Marcian. The council convened in the city of Chalcedon, Bithynia (modern-day Kadıköy, Istanbul, Turkey) from 8 October to 1 November 451 AD. The council was attended by over 520 bishops or their representatives, making it the largest and best-documented of the first seven ecumenical councils. The principal purpose of the council was to re-assert the teachings of the ecumenical Council of Ephesus against the teachings of Eutyches and Nestorius. Such doctrines viewed Christ's divine and human natures as separate (Nestorianism) or viewed Christ as solely divine (Monophysitism).", "title": "" }, { "paragraph_id": 1, "text": "As recorded by American Christian scholar Jaroslav Pelikan, it was stated:", "title": "Extended summary" }, { "paragraph_id": 2, "text": "We all teach harmoniously [that he is] the same perfect in godhead, the same perfect in manhood, truly God and truly man, the same of a reasonable soul and body; homoousios with the Father in godhead, and the same homoousios with us in manhood ... acknowledged in two natures without confusion, without change, without division, without separation.", "title": "Extended summary" }, { "paragraph_id": 3, "text": "Whilst this judgment marked a significant turning point in the Christological debates, it also generated heated disagreements between the council and the Oriental Orthodox Church, who did not agree with such conduct or proceedings. This disagreement would later inform the separation of the Oriental Orthodox Churches from the rest of Christianity, and led to the council being regarded as \"Chalcedon, the Ominous\".", "title": "Extended summary" }, { "paragraph_id": 4, "text": "The council's other responsibilities included addressing controversy, dealing with issues such as ecclesiastical discipline and jurisdiction, and approving Statements of Belief such as the Creed of Nicaea (325), the Creed of Constantinople (381, subsequently known as the Nicene Creed), two letters of St. Cyril of Alexandria against Nestorius, and the Tome of Pope Leo I. The Christology of the Church of the East may be called \"non-Ephesine\" for not accepting the Council of Ephesus, but did finally gather to ratify the Council of Chalcedon at the Synod of Mar Aba I in 544. Through the 1994 Common Christological Declaration between the Catholic Church and the Assyrian Church of the East, the Assyrian Church of the East accepted and confessed the same doctrine of Christology as the Catholic Church; it can be considered here that the Assyrian Church of the East accepted the Council of Ephesus.", "title": "Extended summary" }, { "paragraph_id": 5, "text": "In 325, the first ecumenical council (First Council of Nicaea) determined that Jesus Christ was God, \"consubstantial\" with the Father, and rejected the Arian contention that Jesus was a created being. This was reaffirmed at the First Council of Constantinople (381) and the First Council of Ephesus (431).", "title": "Background" }, { "paragraph_id": 6, "text": "About two years after Cyril of Alexandria's death in 444, an aged monk from Constantinople named Eutyches began teaching a subtle variation on the traditional Christology in an attempt to stop what he saw as a new outbreak of Nestorianism. He claimed to be a faithful follower of Cyril's teaching, which was declared orthodox in the Union of 433.", "title": "Background" }, { "paragraph_id": 7, "text": "Cyril had taught that \"There is only one physis, since it is the Incarnation, of God the Word.\" Cyril apparently thought that the Greek word physis meant approximately what the Latin word persona (person) means, while most Greek theologians would have interpreted that word to mean natura (nature). The energy and imprudence with which Eutyches asserted his opinions led to his being misunderstood. Thus, many believed that Eutyches was advocating Docetism, a sort of reversal of Arianism – where Arius had denied the consubstantial divinity of Jesus, Eutyches seemed to be denying that Jesus was fully human. Pope Leo I wrote that Eutyches' error seemed to be more from a lack of skill than from malice.", "title": "Background" }, { "paragraph_id": 8, "text": "Eutyches had been accusing various personages of covert Nestorianism. In November 448, Flavian, Bishop of Constantinople held a local synod regarding a point of discipline connected with the province of Sardis. At the end of the session of this synod one of those inculpated, Eusebius, Bishop of Dorylaeum, brought a counter charge of heresy against the archimandrite. Eusebius demanded that Eutyches be removed from office. Flavian preferred that the bishop and the archimandrite sort out their differences, but as his suggestion went unheeded, Eutyches was summoned to clarify his position regarding the nature of Christ. Eventually Eutyches reluctantly appeared, but his position was considered to be theologically unsophisticated, and the synod finding his answers unresponsive condemned and exiled him. Flavian sent a full account to Pope Leo I. Although it had been accidentally delayed, Leo wrote a compendious explanation of the whole doctrine involved, and sent it to Flavian as a formal and authoritative decision of the question.", "title": "Background" }, { "paragraph_id": 9, "text": "Eutyches appealed against the decision, labeling Flavian a Nestorian, and received the support of Pope Dioscorus I of Alexandria. John Anthony McGuckin sees an \"innate rivalry\" between the Sees of Alexandria and Constantinople. Dioscurus, imitating his predecessors in assuming a primacy over Constantinople, held his own synod which annulled the sentence of Flavian, and absolved Eutyches.", "title": "Background" }, { "paragraph_id": 10, "text": "Through the influence of the court official Chrysaphius, godson of Eutyches, in 449, the competing claims between the Patriarchs of Constantinople and Alexandria led Emperor Theodosius II to call a council which was held in Ephesus in 449, with Dioscorus presiding.", "title": "Background" }, { "paragraph_id": 11, "text": "Pope Leo sent four legates to represent him and expressed his regret that the shortness of the notice must prevent the presence of any other bishop of the West. He provided his legates, one of whom died en route, with a letter addressed to Flavian explaining Rome's position in the controversy. Leo's letter, now known as Leo's Tome, confessed that Christ had two natures, and was not of or from two natures.", "title": "Background" }, { "paragraph_id": 12, "text": "On August 8, 449 the Second Council of Ephesus began its first session. The Acts of the first session of this synod were read at the Council of Chalcedon, 451, and are thus preserved. The remainder of the Acts (the first session being wanting) are known through a Syriac translation by a Miaphysite monk, written in the year 535 and published from a manuscript in the British Museum. Nonetheless, there are somewhat different interpretations as to what actually transpired. The question before the council by order of the emperor was whether Flavian, in a synod held by him at Constantinople in November, 448, had justly deposed and excommunicated the Archimandrite Eutyches for refusing to admit two natures in Christ.", "title": "Background" }, { "paragraph_id": 13, "text": "Dioscorus began the council by banning all members of the November 448 synod which had deposed Eutyches from sitting as judges. He then introduced Eutyches who publicly professed that while Christ had two natures before the incarnation, the two natures had merged to form a single nature after the incarnation. Of the 130 assembled bishops, 111 voted to rehabilitate Eutyches.", "title": "Background" }, { "paragraph_id": 14, "text": "Throughout these proceedings, Hilary (one of the papal legates) repeatedly called for the reading of Leo's Tome, but was ignored. The Eastern Orthodox Church has very different accounts of The Second Council of Ephesus. Pope Dioscorus requested deferring reading of Leo's Tome, as it was not seen as necessary to start with, and could be read later. This was seen as a rebuke to the representatives from the Church of Rome not reading the Tome from the start.", "title": "Background" }, { "paragraph_id": 15, "text": "Dioscorus then moved to depose Flavian of Constantinople and Eusebius of Dorylaeum on the grounds that they taught the Word had been made flesh and not just assumed flesh from the Virgin and that Christ had two natures. When Flavian and Hilary objected, Dioscorus called for a pro-monophysite mob to enter the church which assaulted Flavian as he clung to the altar. Flavian died three days later. Dioscorus then placed Eusebius of Dorylaeum under arrest and demanded the assembled bishops approve his actions. Fearing the mob, they all did. The papal legates refused to attend the second session at which several more orthodox bishops were deposed, including Ibas of Edessa, Irenaeus of Tyre, Domnus of Antioch, and Theodoret. Dioscorus then had Cyril of Alexandria's Twelve Anathemas declared orthodox with the intent of condemning any confession other than one nature in Christ.", "title": "Background" }, { "paragraph_id": 16, "text": "According to a letter to the Empress Pulcheria collected among the letters of Leo I, Hilary apologized for not delivering to her the pope's letter after the synod, but owing to Dioscurus, who tried to hinder his going either to Rome or to Constantinople, he had great difficulty in making his escape in order to bring to the pontiff the news of the result of the council. Hilary, who later became pope and dedicated an oratory in the Lateran Basilica in thanks for his life, managed to escape from Constantinople and brought news of the council to Leo who immediately dubbed it a \"synod of robbers\" – Latrocinium – and refused to accept its pronouncements. The decisions of this council now threatened schism between the East and the West.", "title": "Background" }, { "paragraph_id": 17, "text": "The claims that bishops being forced to approve actions, were challenged by Pope Dioscorus and the Egyptian Bishops at Chalcedon.", "title": "Background" }, { "paragraph_id": 18, "text": "The situation continued to deteriorate, with Leo demanding the convocation of a new council and Emperor Theodosius II refusing to budge, all the while appointing bishops in agreement with Dioscorus. All this changed dramatically with the Emperor's death and the elevation of Marcian to the imperial throne. To resolve the simmering tensions, Marcian announced his intention to hold a new council to set aside the 449 Second Council of Ephesus which was named the \"Latrocinium\" or \"Robber Council\" by Pope Leo. Pulcheria, the sister of Theodosius, may have influenced this decision, or even made the convention of a council a requirement during her negotiations with Aspar, the magister militum, to marry Marcian.", "title": "Convocation and session" }, { "paragraph_id": 19, "text": "Leo had pressed for it to take place in Italy, but Emperor Marcian instead called for it to convene at Chalcedon, because it was closer to Constantinople, and would thus allow him to respond quickly to any events along the Danube, which was being raided by the Huns under Attila.", "title": "Convocation and session" }, { "paragraph_id": 20, "text": "The council opened on October 8, 451. Marcian had the bishops deposed by Dioscorus returned to their dioceses and had the body of Flavian brought to the capital to be buried honorably. The Emperor asked Leo to preside over the council, but Leo again chose to send legates in his place. This time, Bishops Paschasinus of Lilybaeum and Julian of Cos and two priests Boniface and Basil represented the western church at the council. The council was attended by about 520 bishops or their representatives and was the largest and best-documented of the first seven ecumenical councils. All the sessions were held in the church of St. Euphemia, Martyr, outside the city and directly opposite Constantinople. As to the number of sessions held by the Council of Chalcedon there is a great discrepancy in the various texts of the Acts, also in the ancient historians of the council. Either the respective manuscripts must have been incomplete; or the historians passed over in silence several sessions held for secondary purposes. According to the deacon Rusticus, there were in all sixteen sessions; this division is commonly accepted by scholars, including Karl Josef von Hefele, historian of the councils. If all the separate meetings were counted, there would be twenty-one sessions; several of these meetings, however, are considered as supplementary to preceding sessions.", "title": "Convocation and session" }, { "paragraph_id": 21, "text": "Paschasinus refused to give Dioscorus (who had excommunicated Leo leading up to the council) a seat at the council. As a result, he was moved to the nave of the church. Paschasinus further ordered the reinstatement of Theodoret and that he be given a seat, but this move caused such an uproar among the council fathers, that Theodoret also sat in the nave, though he was given a vote in the proceedings, which began with a trial of Dioscorus.", "title": "Convocation and session" }, { "paragraph_id": 22, "text": "Marcian wished to bring proceedings to a speedy end, and asked the council to make a pronouncement on the doctrine of the Incarnation before continuing the trial. The council fathers, however, felt that no new creed was necessary, and that the doctrine had been laid out clearly in Leo's Tome. They were also hesitant to write a new creed as the First Council of Ephesus had forbidden the composition or use of any new creed. Aetius, deacon of Constantinople then read Cyril's letter to Nestorius, and a second letter to John of Antioch. The bishops responded, \"We all so believe: Pope Leo thus believes ... we all thus believe. As Cyril so believe we, all of us: eternal be the memory of Cyril: as the epistles of Cyril teach such is our mind, such has been our faith: such is our faith: this is the mind of Archbishop Leo, so he believes, so he has written.\"", "title": "Convocation and session" }, { "paragraph_id": 23, "text": "Beronician, clerk of the consistory, then read from a book handed him by Aetius, the synodical letter of Leo to Flavian (Leo's Tome). After the reading of the letter, the bishops cried out: \"This is the faith of the fathers, this is the faith of the Apostles. So we all believe, thus the orthodox believe. ...Peter has spoken thus through Leo. So taught the Apostles. Piously and truly did Leo teach, so taught Cyril. Everlasting be the memory of Cyril. Leo and Cyril taught the same thing, ...This is the true faith...This is the faith of the fathers. Why were not these things read at Ephesus?\"", "title": "Convocation and session" }, { "paragraph_id": 24, "text": "However, during the reading of Leo's Tome, three passages were challenged as being potentially Nestorian, and their orthodoxy was defended by using the writings of Cyril. Due to such concerns, the council decided to adjourn and appoint a special committee to investigate the orthodoxy of Leo's Tome, judging it by the standard of Cyril's Twelve Chapters, as some of the bishops present raised concerns about their compatibility. This committee was headed by Anatolius, Patriarch of Constantinople, and was given five days to carefully study the matter. The committee unanimously decided in favor of the orthodoxy of Leo, determining that what he said was compatible with the teaching of Cyril. A number of other bishops also entered statements to the effect that they believed that Leo's Tome was not in contradiction with the teaching of Cyril as well.", "title": "Convocation and session" }, { "paragraph_id": 25, "text": "The council continued with Dioscorus' trial, but he refused to appear before the assembly. However, historical accounts from the Eastern Orthodox Church note that Dioscorus was put under solitary arrest. As a result, he was condemned, but by an underwhelming amount (more than half the bishops present for the previous sessions did not attend his condemnation), and all of his decrees were declared null. Empress Pulcheria (Marcian's wife) told Dioscorus \"In my father's time, there was a man who was stubborn (referring to St. John Chrysostom) and you are aware of what was made of him\", to which Dioscorus famously responded \"And you may recall that your mother prayed at his tomb, as she was bleeding of sickness\". Pulcheria is said to have slapped Dioscorus in the face, breaking some of his teeth, and ordered the guards to confine him, which they did pulling his beard hair. Dioscorus is said to have put these in a box and sent them back to his Church in Alexandria noting \"this is the fruit of my faith.\" Marcian responded by exiling Dioscorus.", "title": "Convocation and session" }, { "paragraph_id": 26, "text": "All of the bishops were then asked to sign their assent to the Tome, but a group of thirteen Egyptians refused, saying that they would assent to \"the traditional faith\". As a result, the Emperor's commissioners decided that a credo would indeed be necessary and presented a text to the fathers. No consensus was reached. Paschasinus threatened to return to Rome to reassemble the council in Italy. Marcian agreed, saying that if a clause were not added to the credo, the bishops would have to relocate. The Committee then sat in the oratory of the most holy martyr Euphemis and afterwards reported a definition of faith which while teaching the same doctrine was not the Tome of Leo.", "title": "Convocation and session" }, { "paragraph_id": 27, "text": "Although it could be reconciled with Cyril's Formula of Reunion, it was not compatible in its wording with Cyril's Twelve Anathemas. In particular, the third anathema reads: \"If anyone divides in the one Christ the hypostases after the union, joining them only by a conjunction of dignity or authority or power, and not rather by a coming together in a union by nature, let him be anathema.\" This appeared to some to be incompatible with Leo's definition of two natures hypostatically joined. However, the council would determine (with the exception of 13 Egyptian bishops) that this was an issue of wording and not of doctrine; a committee of bishops appointed to study the orthodoxy of the Tome using Cyril's letters (which included the twelve anathemas) as their criteria unanimously determined it to be orthodox, and the council, with few exceptions, supported this.", "title": "Convocation and session" }, { "paragraph_id": 28, "text": "It approved the creed of Nicaea (325), the creed of Constantinople (381; subsequently known as the Nicene Creed), two letters of Cyril against Nestorius, which insisted on the unity of divine and human persons in Christ, and the Tome of Pope Leo I confirming two distinct natures in Christ.", "title": "Convocation and session" }, { "paragraph_id": 29, "text": "The dogmatic definitions of the council are recognized as normative by the Eastern Orthodox and Catholic Churches, as well by certain other Western Churches; also, most Protestants agree that the council's teachings regarding the Trinity and the Incarnation are orthodox doctrine which must be adhered to. The council, however, is rejected by the Oriental Orthodox Churches, the latter teaching rather that \"The Lord Jesus Christ is God the Incarnate Word. He possesses the perfect Godhead and the perfect manhood. His fully divine nature is united with His fully human nature yet without mixing, blending or alteration.\" The Oriental Orthodox contend that this latter teaching has been misunderstood as monophysitism, an appellation with which they strongly disagree but, nevertheless, refuse to accept the decrees of the council.", "title": "Acceptance" }, { "paragraph_id": 30, "text": "Many Anglicans and most Protestants consider it to be the last authoritative ecumenical council. These churches, along with Martin Luther, hold that both conscience and scripture preempt doctrinal councils and generally agree that the conclusions of later councils were unsupported by or contradictory to scripture.", "title": "Acceptance" }, { "paragraph_id": 31, "text": "The Council of Chalcedon issued the Chalcedonian Definition, which repudiated the notion of a single nature in Christ, and declared that he has two natures in one person and hypostasis. It also insisted on the completeness of his two natures: Godhead and manhood. The council also issued 27 disciplinary canons governing church administration and authority. In a further decree, later known as canon 28, the bishops declared that the See of Constantinople (New Rome) had the patriarchal status with \"equal privileges\" (\"τῶν ἴσων ἀπολαύουσαν\" in Greek, \"aequalibus privilegiis\" in Latin) to the See of Rome. No reference was made in Canon 28 to the bishops of Rome or Constantinople having their authority from being successors to Peter or Andrew respectively. Instead, the stated reasons in the actual text of the Canon that the episcopacy of these cities had been granted their status was the importance of these cities as major cities of the empire of the time.", "title": "Acceptance" }, { "paragraph_id": 32, "text": "The Confession of Chalcedon provides a clear statement on the two natures of Christ, human and divine:", "title": "Acceptance" }, { "paragraph_id": 33, "text": "We, then, following the holy Fathers, all with one consent, teach people to confess one and the same Son, our Lord Jesus Christ, the same perfect in Godhead and also perfect in manhood; truly God and truly man, of a reasonable [rational] soul and body; consubstantial [co-essential] with the Father according to the Godhead, and consubstantial with us according to the Manhood; in all things like unto us, without sin; begotten before all ages of the Father according to the Godhead, and in these latter days, for us and for our salvation, born of the Virgin Mary, the Mother of God, according to the Manhood; one and the same Christ, Son, Lord, only begotten, to be acknowledged in two natures, inconfusedly, unchangeably, indivisibly, inseparably; (ἐν δύο φύσεσιν ἀσυγχύτως, ἀτρέπτως, ἀδιαιρέτως, ἀχωρίστως – in duabus naturis inconfuse, immutabiliter, indivise, inseparabiliter) the distinction of natures being by no means taken away by the union, but rather the property of each nature being preserved, and concurring in one Person (prosopon) and one Subsistence (hypostasis), not parted or divided into two persons, but one and the same Son, and only begotten God (μονογενῆ Θεόν), the Word, the Lord Jesus Christ; as the prophets from the beginning [have declared] concerning Him, and the Lord Jesus Christ Himself has taught us, and the Creed of the holy Fathers has handed down to us.", "title": "Acceptance" }, { "paragraph_id": 34, "text": "The full text of the definition reaffirms the decisions of the Council of Ephesus and the pre-eminence of the Creed of Nicea (325). It also canonises as authoritative two of Cyril of Alexandria's letters and the Tome of Leo written against Eutyches and sent to Archbishop Flavian of Constantinople in 449.", "title": "Acceptance" }, { "paragraph_id": 35, "text": "The work of the council was completed by a series of 30 disciplinary canons, the Ancient Epitomes of which are:", "title": "Acceptance" }, { "paragraph_id": 36, "text": "Canon 28 grants equal privileges (isa presbeia) to Constantinople as of Rome because Constantinople is the New Rome as renewed by canon 36 of the Quinisext Council. Pope Leo declared the canon 28 null and void and only approved the canons of the council which were pertaining to faith. Initially, the council indicated their understanding that Pope Leo's ratification was necessary for the canon to be binding, writing, \"we have made still another enactment which we have deemed necessary for the maintenance of good order and discipline, and we are persuaded that your Holiness will approve and confirm our decree.... We are confident you will shed upon the Church of Constantinople a ray of that Apostolic splendor which you possess, for you have ever cherished this church, and you are not at all niggardly in imparting your riches to your children. … Vouchsafe then, most Holy and most Blessed Father, to accept what we have done in your name, and in a friendly spirit (hos oikeia te kai phila). For your legates have made a violent stand against it, desiring, no doubt, that this good deed should proceed, in the first instance, from your provident hand. But we, wishing to gratify the pious Christian emperors, and the illustrious Senate, and the capital of the empire, have judged that an Ecumenical Council was the fittest occasion for effecting this measure. Hence we have made bold to confirm the privileges of the afore-mentioned city (tharresantes ekurosamen) as if your holiness had taken the initiative, for we know how tenderly you love your children, and we feel that in honoring the child we have honored its parent.... We have informed you of everything with a view of proving our sincerity, and of obtaining for our labors your confirmation and consent.\" Following Leo's rejection of the canon, Bishop Anatolius of Constantinople conceded, \"Even so, the whole force of confirmation of the acts was reserved for the authority of Your Blessedness. Therefore, let Your Holiness know for certain that I did nothing to further the matter, knowing always that I held myself bound to avoid the lusts of pride and covetousness.\" However, the Canon has since been viewed as valid by the Eastern Orthodox Church.", "title": "Acceptance" }, { "paragraph_id": 37, "text": "According to some ancient Greek collections, canons 29 and 30 are attributed to the council: canon 29, which states that an unworthy bishop cannot be demoted but can be removed, is an extract from the minutes of the 19th session; canon 30, which grants the Egyptians time to consider their rejection of Leo's Tome, is an extract from the minutes of the fourth session.", "title": "Acceptance" }, { "paragraph_id": 38, "text": "In all likelihood an official record of the proceedings was made either during the council itself or shortly afterwards. The assembled bishops informed the pope that a copy of all the \"Acta\" would be transmitted to him; in March, 453, Pope Leo commissioned Julian of Cos, then at Constantinople, to make a collection of all the Acts and translate them into Latin. Most of the documents, chiefly the minutes of the sessions, were written in Greek; others, e.g. the imperial letters, were issued in both languages; others, again, e.g. the papal letters, were written in Latin. Eventually nearly all of them were translated into both languages.", "title": "Acceptance" }, { "paragraph_id": 39, "text": "The metropolitan of Jerusalem was given independence from the metropolitan of Antioch and from any other higher-ranking bishop, given what is now known as autocephaly, in the council's seventh session whose \"Decree on the Jurisdiction of Jerusalem and Antioch\" contains: \"the bishop of Jerusalem, or rather the most holy Church which is under him, shall have under his own power the three Palestines\". This led to Jerusalem becoming a patriarchate, one of the five patriarchates known as the pentarchy, when the title of \"patriarch\" was created in 531 by Justinian. The Oxford Dictionary of the Christian Church, s.v. patriarch (ecclesiastical), also calls it \"a title dating from the 6th century, for the bishops of the five great sees of Christendom\". Merriam-Webster's Encyclopedia of World Religions, says: \"Five patriarchates, collectively called the pentarchy, were the first to be recognized by the legislation of the emperor Justinian (reigned 527–565)\".", "title": "The status of the sees of Constantinople and Jerusalem" }, { "paragraph_id": 40, "text": "In a canon of disputed validity, the Council of Chalcedon also elevated the See of Constantinople to a position \"second in eminence and power to the Bishop of Rome\".", "title": "The status of the sees of Constantinople and Jerusalem" }, { "paragraph_id": 41, "text": "The Council of Nicaea in 325 had noted that the Sees of the Rome, Alexandria and the Antioch, should have primacy over other, lesser dioceses. At the time, the See of Constantinople was not yet of ecclesiastical prominence, but its proximity to the Imperial court gave rise to its importance. The Council of Constantinople in 381 modified the situation somewhat by placing Constantinople second in honor, above Alexandria and Antioch, stating in Canon III, that \"the bishop of Constantinople… shall have the prerogative of honor after the bishop of Rome; because Constantinople is New Rome\". In the early 5th century, this status was challenged by the bishops of Alexandria, but the Council of Chalcedon confirmed in Canon XXVIII:", "title": "The status of the sees of Constantinople and Jerusalem" }, { "paragraph_id": 42, "text": "For the Fathers rightly granted privileges to the throne of old Rome, because it was the royal city. And the One Hundred and Fifty most religious Bishops, actuated by the same consideration, gave equal privileges (ἴσα πρεσβεῖα) to the most holy throne of New Rome, justly judging that the city which is honoured with the Sovereignty and the Senate and enjoys equal privileges with the old imperial Rome, should in ecclesiastical matters also be magnified as she is, and rank next after her.", "title": "The status of the sees of Constantinople and Jerusalem" }, { "paragraph_id": 43, "text": "In making their case, the council fathers argued that tradition had accorded \"honor\" to the see of older Rome because it was the first imperial city. Accordingly, \"moved by the same purposes\" the fathers \"apportioned equal prerogatives to the most holy see of new Rome\" because \"the city which is honored by the imperial power and senate and enjoying privileges equaling older imperial Rome should also be elevated to her level in ecclesiastical affairs and take second place after her\". The framework for allocating ecclesiastical authority advocated by the council fathers mirrored the allocation of imperial authority in the later period of the Roman Empire. The Eastern position could be characterized as being political in nature, as opposed to a doctrinal view. In practice, all Christians East and West addressed the papacy as the See of Peter and Paul or the Apostolic See rather than the See of the Imperial Capital. Rome understands this to indicate that its precedence has always come from its direct lineage from the apostles Peter and Paul rather than its association with Imperial authority.", "title": "The status of the sees of Constantinople and Jerusalem" }, { "paragraph_id": 44, "text": "After the passage of the Canon 28, Rome filed a protest against the reduction of honor given to Antioch and Alexandria. However, fearing that withholding Rome's approval would be interpreted as a rejection of the entire council, in 453 the pope confirmed the council's canons while declaring the 28th null and void. This position would change and later be accepted in 1215 at the Fourth Council of the Lateran.", "title": "The status of the sees of Constantinople and Jerusalem" }, { "paragraph_id": 45, "text": "The near-immediate result of the council was a major schism. The bishops who were uneasy with the language of Pope Leo's Tome repudiated the council, saying that the acceptance of two physes was tantamount to Nestorianism. Dioscorus of Alexandria advocated miaphysitism and had dominated the Council of Ephesus. Churches that rejected Chalcedon in favor of Ephesus broke off from the rest of the Eastern Church in a schism, the most significant among these being the Church of Alexandria, today known as the Coptic Orthodox Church. The rise of the \"so-called\" Monophysitism in the East (as branded by the West) was led by the Copts of Egypt. This must be regarded as the outward expression of the growing nationalist trends in that province against the gradual intensification of Byzantine imperialism, soon to reach its consummation during the reign of Emperor Justinian. A significant effect on the Orthodox Christians in Egypt, was a series of persecutions by the Roman (later, Byzantine) empire forcing followers of the Oriental Orthodox Church to claim allegiance to Leo's Tome, or Chalcedon. This led to the martyrdom, persecution and death of thousands of Egyptian saints and bishops till the Arab Conquest of Egypt. As a result, The Council of Chalcedon is referred to as \"Chalcedon, the Ominous\" among Coptic Egyptians given how it led to Christians persecuting other Christians for the first time in history. Coptic Orthodox Christians continue to distinguish themselves from followers of Chalcedon to this day. Although the theological differences are seen as limited (if non-existent), it is politics, the subsequent persecutions and the power struggles in the Roman Empire, that may have led to the Great Schism, or at least contributed significantly to amplifying it through the centuries.", "title": "Consequences: Chalcedonian Schism" }, { "paragraph_id": 46, "text": "The divisions in the Church weakened the Byzantine Empire's eastern provinces and helped eased the subsequent Sassanian and Arab invasions.", "title": "Consequences: Chalcedonian Schism" }, { "paragraph_id": 47, "text": "Justinian I attempted to bring those monks who still rejected the decision of the Council of Chalcedon into communion with the greater church. The exact time of this event is unknown, but it is believed to have been between 535 and 548. St Abraham of Farshut was summoned to Constantinople and he chose to bring with him four monks. Upon arrival, Justinian summoned them and informed them that they would either accept the decision of the council or lose their positions. Abraham refused to entertain the idea. Theodora tried to persuade Justinian to change his mind, seemingly to no avail. Abraham himself stated in a letter to his monks that he preferred to remain in exile rather than subscribe to a faith contrary to that of Athanasius. They were not alone, and the non-Chalcedon churches compose Oriental Orthodoxy, with the Church of Alexandria as their primus inter pares. Only in recent years has a degree of rapprochement between Chalcedonian Christians and the Oriental Orthodox been seen.", "title": "Consequences: Chalcedonian Schism" }, { "paragraph_id": 48, "text": "Several Oriental Orthodox Church historians have viewed the council as a dispute with the Church of Rome over precedence among the various patriarchal sees. Coptic sources, both in Coptic and in Arabic, suggest that questions of political and ecclesiastical authority exaggerated differences between the two professions of faith.", "title": "Oriental Orthodox view" }, { "paragraph_id": 49, "text": "The Eastern Orthodox Church commemorates the \"Holy Fathers of the 4th Ecumenical Council, who assembled in Chalcedon\" on the Sunday on or after July 13; however, in some places (e.g., Russia) on that date is rather a feast of the Fathers of the First Six Ecumenical Councils.", "title": "Liturgical commemorations" }, { "paragraph_id": 50, "text": "For both of the above complete propers have been composed and are found in the Menaion.", "title": "Liturgical commemorations" }, { "paragraph_id": 51, "text": "For the former \"The Office of the 630 Holy and God-bearing Fathers of the 4th ... Summoned against the Monophysites Eftyches and Dioskoros ...\" was composed in the middle of the 14th century by Patriarch Philotheus I of Constantinople. This contains numerous hymns exposing the council's teaching, commemorating its leaders whom it praises and whose prayers it implores, and naming its opponents pejoratively, e.g., \"Come let us clearly reject the errors of ... but praise in divine songs the fourth council of pious fathers.\"", "title": "Liturgical commemorations" }, { "paragraph_id": 52, "text": "For the latter the propers are titled \"We Commemorate Six Holy Ecumenical Councils\". This repeatedly damns those anathematized by the councils with such rhetoric as \"Christ-smashing deception enslaved Nestorius\" and \"mindless Arius and ... is tormented in the fires of Gehenna ...\" while the fathers of the councils are praised and the dogmas of the councils are expounded in the hymns therein.", "title": "Liturgical commemorations" }, { "paragraph_id": 53, "text": "This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). \"Council of Chalcedon\". Catholic Encyclopedia. New York: Robert Appleton Company.", "title": "References" } ]	The Council of Chalcedon was the fourth ecumenical council of the Christian Church. It was convoked by the Roman emperor Marcian. The council convened in the city of Chalcedon, Bithynia from 8 October to 1 November 451 AD. The council was attended by over 520 bishops or their representatives, making it the largest and best-documented of the first seven ecumenical councils. The principal purpose of the council was to re-assert the teachings of the ecumenical Council of Ephesus against the teachings of Eutyches and Nestorius. Such doctrines viewed Christ's divine and human natures as separate (Nestorianism) or viewed Christ as solely divine (Monophysitism).	2002-02-25T15:51:15Z	2023-12-26T14:09:36Z	[ "Template:See also", "Template:Christian History", "Template:Efn", "Template:Lang", "Template:EB1911 poster", "Template:Authority control", "Template:Location map", "Template:Cite journal", "Template:Cite web", "Template:Catholic", "Template:Who", "Template:Notelist", "Template:Cite book", "Template:Webarchive", "Template:Christianity footer", "Template:Sfn", "Template:Dubious", "Template:Lang-la", "Template:Citation-attribution", "Template:Wikiquote", "Template:Ecumenical councils", "Template:Infobox ecumenical council", "Template:IPAc-en", "Template:Citation needed", "Template:Refend", "Template:Catholic Church footer", "Template:Short description", "Template:Main article", "Template:ISBN", "Template:Ecumenical councils of the Catholic Church", "Template:Blockquote", "Template:Snd", "Template:Clarify", "Template:Further", "Template:Reflist", "Template:Refbegin", "Template:History of the Catholic Church", "Template:Eastern Orthodox sidebar", "Template:Main" ]	https://en.wikipedia.org/wiki/Council_of_Chalcedon
6,963	Canadian football	Canadian football, or simply football, is a sport in Canada in which two teams of 12 players each compete on a field 110 yards (101 m) long and 65 yards (59 m) wide, attempting to advance a pointed oval-shaped ball into the opposing team's end zone. American and Canadian football have shared origins and are closely related, but have some major differences. Rugby football, from which Canadian football developed, was first recorded in Canada in the early 1860s, taken there by British immigrants, possibly in 1824. Both the Canadian Football League (CFL), the sport's top professional league, and Football Canada, the governing body for amateur play, trace their roots to 1880 and the founding of the Canadian Rugby Football Union. The CFL is the most popular and only major professional Canadian football league. Its championship game, the Grey Cup, is one of Canada's biggest sporting events, attracting a large television audience. Canadian football is also played at high school, junior, collegiate, and semi-professional levels: the Canadian Junior Football League and Quebec Junior Football League are for players aged 18–22, post-secondary institutions compete in U Sports football for the Vanier Cup, and seniors in the Alberta Football League. The Canadian Football Hall of Fame is in Hamilton, Ontario. The first documented football match was a practice game played on November 9, 1861, at University College, University of Toronto (approximately 400 yards or 370 metres west of Queen's Park). One of the participants in the game involving University of Toronto students was Sir William Mulock, later chancellor of the school. A football club was formed at the university soon afterward, although its rules of play at this stage are unclear. The first written account of a game played was on October 15, 1862, on the Montreal Cricket Grounds. It was between the First Battalion Grenadier Guards and the Second Battalion Scots Fusilier Guards resulting in a win by the Grenadier Guards 3 goals, 2 rouges to nothing. In 1864, at Trinity College, Toronto, F. Barlow Cumberland, Frederick A. Bethune, and Christopher Gwynn, one of the founders of Milton, Massachusetts, devised rules based on rugby football. The game gradually gained a following, with the Hamilton Football Club (later the Hamilton Tiger-Cats) formed on November 3, 1869. Montreal Football Club was formed on April 8, 1872. Toronto Argonaut Football Club was formed on October 4, 1873, and the Ottawa Football Club (later the Ottawa Rough Riders) on September 20, 1876. Of those clubs, only the Toronto club is still in continuous operation today. This rugby-football soon became popular at Montreal's McGill University. McGill challenged Harvard University to a two-game series in 1874, using a hybrid game of English rugby devised by the University of McGill. The first attempt to establish a proper governing body and to adopt the current set of Rugby rules was the Foot Ball Association of Canada, organized on March 24, 1873, followed by the Canadian Rugby Football Union (CRFU) founded June 12, 1880, which included teams from Ontario and Quebec. Later both the Ontario Rugby Football Union and Quebec Rugby Football Union (ORFU and QRFU respectively) were formed (January 1883), and then the Interprovincial (1907) and Western Interprovincial Football Union (1936) (IRFU and WIFU). The CRFU reorganized into an umbrella organization forming the Canadian Rugby Union (CRU) in 1891. The immediate forerunner to the current Canadian Football League was established in 1956 when the IRFU and WIFU formed an umbrella organization, the Canadian Football Council (CFC). In 1958 the CFC left the CRU to become the "Canadian Football League" (CFL). The Burnside rules closely resembling American football (which are similar rules developed by Walter Camp for that sport) that were incorporated in 1903 by the ORFU, were an effort to distinguish it from a more rugby-oriented game. The Burnside Rules had teams reduced to 12 men per side, introduced the snap-back system, required the offensive team to gain 10 yards on three downs, eliminated the throw-in from the sidelines, allowed only six men on the line, stated that all goals by kicking were to be worth two points and the opposition was to line up 10 yards from the defenders on all kicks. The rules were an attempt to standardize the rules throughout the country. The CIRFU, QRFU, and CRU refused to adopt the new rules at first. Forward passes were not allowed in the Canadian game until 1929, and touchdowns, which had been five points, were increased to six points in 1956, in both cases several decades after the Americans had adopted the same changes. The primary differences between the Canadian and American games stem from rule changes that the American side of the border adopted but the Canadian side did not (originally, both sides had three downs, goal posts on the goal lines, and unlimited forward motion, but the American side modified these rules and the Canadians did not). The Canadian field width was one rule that was not based on American rules, as the Canadian game was played in wider fields and stadiums that were not as narrow as the American stadiums. The Grey Cup was established in 1909 after being donated by Albert Grey, 4th Earl Grey, Governor General of Canada, as the championship of teams under the CRU for the Rugby Football Championship of Canada. Initially an amateur competition, it eventually became dominated by professional teams in the 1940s and early 1950s. The Ontario Rugby Football Union, the last amateur organization to compete for the trophy, withdrew from competition after the 1954 season. The move ushered in the modern era of Canadian professional football, culminating in the formation of the present-day Canadian Football League in 1958. Canadian football has mostly been confined to Canada, with the United States being the only other country to have hosted high-level Canadian football games. The CFL's controversial "South Division" as it would come to be officially known attempted to put CFL teams in the United States playing under Canadian rules in 1995. The Expansion was aborted after three years; the Baltimore Stallions were the most successful of the numerous Americans teams to play in the CFL, winning the 83rd Grey Cup. Continuing financial losses, a lack of proper Canadian football venues, a pervasive belief that the American teams were simply pawns to provide the struggling Canadian teams with expansion fee revenue, and the return of the NFL to Baltimore prompted the end of Canadian football on the American side of the border. The CFL hosted the Touchdown Atlantic regular season game in Nova Scotia in 2005 and New Brunswick in 2010, 2011 and 2013. In 2013, Newfoundland and Labrador became the last province to establish football at the minor league level, with teams playing on the Avalon Peninsula and in Labrador City. The province however has yet to host a college or CFL game. Prince Edward Island, the smallest of the provinces, has also never hosted a CFL game. On 13 February 2023, IFAF and Football Canada announced in a joint statement that the Canadian Amateur Football Rulebook would be an accepted rules code for international play, but would not be a substitute for world championships or world championship qualification. “As Football Canada continues to work with IFAF, I believe this opens the door for international friendlies and tournaments to be staged in Canada employing the infrastructure communities have invested in for our sport from coast to coast,” Football Canada president and IFAF General Secretary Jim Mullin said in the joint statement. Canadian football is played at several levels in Canada; the top league is the professional nine-team Canadian Football League (CFL). The CFL regular season begins in June, and playoffs for the Grey Cup are completed by late November. In cities with outdoor stadiums such as Edmonton, Winnipeg, Calgary, and Regina, low temperatures and icy field conditions can seriously affect the outcome of a game. Amateur football is governed by Football Canada. At the university level, 27 teams play in four conferences under the auspices of U Sports; the U Sports champion is awarded the Vanier Cup. Junior football is played by many after high school before joining the university ranks. There are 19 junior teams in three conferences in the Canadian Junior Football League competing for the Canadian Bowl. The Quebec Junior Football League includes teams from Ontario and Quebec who battle for the Manson Cup. Semi-professional leagues have grown in popularity in recent years, with the Alberta Football League becoming especially popular. The Northern Football Conference formed in Ontario in 1954 has also surged in popularity for former college players who do not continue to professional football. The Ontario champion plays against the Alberta champion for the "National Championship". The Canadian Major Football League is the governing body for the semi-professional game. Women's football has gained attention in recent years in Canada. The first Canadian women's league to begin operations was the Maritime Women's Football League in 2004. The largest women's league is the Western Women's Canadian Football League. The Canadian football field is 150 yards (137 m) long and 65 yards (59 m) wide, within which the goal areas are 20 yards (18 m) deep, and the goal lines are 110 yards (101 m) apart. Weighted pylons are placed on the inside corner of the intersections of the goal lines and end lines. Including the end zones, the total area of the field is 87,750 square feet (8,152 m). At each goal line is a set of 40-foot-high (12 m) goalposts, which consist of two uprights joined by an 18+1⁄2-foot-long (5.6 m) crossbar which is 10 feet (3 m) above the goal line. The goalposts may be H-shaped (both posts fixed in the ground) although in the higher-calibre competitions the tuning-fork design (supported by a single curved post behind the goal line, so that each post starts 10 feet (3 m) above the ground) is preferred. The sides of the field are marked by white sidelines, the goal line is marked in white or yellow, and white lines are drawn laterally across the field every 5 yards (4.6 m) from the goal line. These lateral lines are called "yard lines" and often marked with the distance in yards from and an arrow pointed toward the nearest goal line. Prior to the early 1980s, arrows were not used and all yard lines (in both multiples of 5 and 10) were usually marked with the distance to the goal line, including the goal line itself which was marked with either a "0" or "00"; in most stadiums today, only the yard markers in multiples of 10 are marked with numbers, with the goal line sometimes being marked with a "G". The centre (55-yard) line usually is marked with a "C" (or, more rarely, with a "55"). "Hash marks" are painted in white, parallel to the yardage lines, at 1 yard (0.9 m) intervals, 24 yards (21.9 m) from the sidelines under amateur rules, but 28 yards (25.6 m) in the CFL. On fields that have a surrounding running track, such as Molson Stadium and many universities, the end zones are often cut off in the corners to accommodate the track. Until 1986, the end zones were 25 yards (23 m) deep, giving the field an overall length of 160 yards (150 m), and a correspondingly larger cutoff could be required at the corners. The first field to feature the shorter 20-yard endzones was Vancouver's BC Place (home of the BC Lions), which opened in 1983. This was particularly common among U.S.-based teams during the CFL's American expansion, where few American stadiums were able to accommodate the much longer and noticeably wider CFL field. The end zones in Toronto's BMO Field are only 18 yards instead of 20 yards. Teams advance across the field through the execution of quick, distinct plays, which involve the possession of a brown, prolate spheroid ball with ends tapered to a point. The ball has two one-inch-wide white stripes. At the beginning of a match, an official tosses a coin and allows the captain of the visiting team to call heads or tails. The captain of the team winning the coin toss is given the option of having first choice, or of deferring first choice to the other captain. The captain making first choice may either choose a) to kick off or receive the kick at the beginning of the half, or b) which direction of the field to play in. The remaining choice is given to the opposing captain. Before the resumption of play in the second half, the captain that did not have first choice in the first half is given first choice. Teams usually choose to defer, so it is typical for the team that wins the coin toss to kick to begin the first half and receive to begin the second. Play begins at the start of each half with one team place-kicking the ball from its own end of the field: the 35-yard line in the CFL, the 45-yard line in amateur play. Both teams then attempt to catch the ball. The player who recovers the ball may run while holding the ball, or lateral throw the ball to a teammate. Play stops when the ball carrier's knee, elbow, or any other body part aside from the feet and hands, is forced to the ground (a tackle); when a forward pass is not caught on the fly (during a scrimmage); when a touchdown (see below) or a field goal is scored; when the ball leaves the playing area by any means (being carried, thrown, or fumbled out of bounds); or when the ball carrier is in a standing position but can no longer move forwards (called forward progress). If no score has been made, the next play starts from scrimmage. Before scrimmage, an official places the ball at the spot it was at the stop of clock, but no nearer than 24 yards from the sideline or 1 yard from the goal line. The line parallel to the goal line passing through the ball (line from sideline to sideline for the length of the ball) is referred to as the line of scrimmage. This line is similar to "no-man's land"; players must stay on their respective sides of this line until the play has begun again. For a scrimmage to be valid the team in possession of the football must have seven players, excluding the quarterback, within one yard of the line of scrimmage. The defending team must stay a yard or more back from the line of scrimmage. On the field at the beginning of a play are two teams of 12 (and not 11 as in American football). The team in possession of the ball is the offence and the team defending is referred to as the defence. Play begins with a backwards pass through the legs (the snap) by a member of the offensive team, to another member of the offensive team. This is usually the quarterback or punter, but a "direct snap" to a running back is also not uncommon. If the quarterback or punter receives the ball, he may then do any of the following: Each play constitutes a down. The offence must advance the ball at least ten yards towards the opponents' goal line within three downs or forfeit the ball to their opponents. Once ten yards have been gained the offence gains a new set of three downs (rather than the four downs given in American football). Downs do not accumulate. If the offensive team completes 10 yards on their first play, they lose the other two downs and are granted another set of three. If a team fails to gain ten yards in two downs they usually punt the ball on third down or try to kick a field goal (see below), depending on their position on the field. The team may, however use its third down in an attempt to advance the ball and gain a cumulative 10 yards. The ball changes possession in the following instances: There are many rules to contact in this type of football. The only player on the field who may be legally tackled is the player currently in possession of the football (the ball carrier). On a passing play a receiver, that is to say, an offensive player sent down the field to receive a pass, may not be interfered with (have his motion impeded, be blocked, etc.) unless he is within five yards of the line of scrimmage. Prior to a pass that goes beyond the line of scrimmage, a defender may not be impeded more than one yard past that line. Otherwise, any player may block another player's passage, so long as he does not hold or trip the player he intends to block. The kicker may not be contacted after the kick but before his kicking leg returns to the ground (this rule is not enforced upon a player who has blocked a kick). The quarterback may not be hit or tackled after throwing the ball, nor may he be hit while in the pocket (i.e. behind the offensive line) prior to that point below the knees or above the shoulders. Infractions of the rules are punished with penalties, typically a loss of yardage of 5, 10 or 15 yards against the penalized team. Minor violations such as offside (a player from either side encroaching into scrimmage zone before the play starts) are penalized five yards, more serious penalties (such as holding) are penalized 10 yards, and severe violations of the rules (such as face-masking [grabbing the face mask attached to a player's helmet]) are typically penalized 15 yards. Depending on the penalty, the penalty yardage may be assessed from the original line of scrimmage, from where the violation occurred (for example, for a pass interference infraction), or from where the ball ended after the play. Penalties on the offence may, or may not, result in a loss of down; penalties on the defence may result in a first down being automatically awarded to the offence. For particularly severe conduct, the game official(s) may eject players (ejected players may be substituted for), or in exceptional cases, declare the game over and award victory to one side or the other. Penalties do not affect the yard line which the offence must reach to gain a first down (unless the penalty results in a first down being awarded); if a penalty against the defence results in the first down yardage being attained, then the offence is awarded a first down. If the defence is penalized on a two-point convert attempt and the offence chooses to attempt the play again, the offence must attempt another two-point convert; it cannot change to a one-point attempt. Conversely, the offence can attempt a two-point convert following a defensive penalty on a one-point attempt. Penalties may occur before a play starts (such as offside), during the play (such as holding), or in a dead-ball situation (such as unsportsmanlike conduct). Penalties never result in a score for the offence. For example, a point-of-foul infraction committed by the defence in their end zone is not ruled a touchdown, but instead advances the ball to the one-yard line with an automatic first down. For a distance penalty, if the yardage is greater than half the distance to the goal line, then the ball is advanced half the distance to the goal line, though only up to the one-yard line (unlike American football, in Canadian football no scrimmage may start inside either one-yard line). If the original penalty yardage would have resulted in a first down or moving the ball past the goal line, a first down is awarded. In most cases, the non-penalized team will have the option of declining the penalty; in which case the results of the previous play stand as if the penalty had not been called. One notable exception to this rule is if the kicking team on a 3rd down punt play is penalized before the kick occurs: the receiving team may not decline the penalty and take over on downs. After the kick is made, change of possession occurs and subsequent penalties are assessed against either the spot where the ball is caught, or the runback. Canadian football distinguishes four ways of kicking the ball: On any kicking play, all onside players (the kicker, and teammates behind the kicker at the time of the kick) may recover and advance the ball. Players on the kicking team who are not onside may not approach within five yards of the ball until it has been touched by the receiving team, or by an onside teammate. The methods of scoring are: Resumption of play following a score is conducted under procedures which vary with the type of score. The game consists of two 30-minute halves, each of which is divided into two 15-minute quarters. The clock counts down from 15:00 in each quarter. Timing rules change when there are three minutes remaining in a half. A short break interval of 2 minutes occurs after the end of each quarter (a longer break of 15 minutes at halftime), and the two teams then change goals. In the first 27 minutes of a half, the clock stops when: The clock starts again when the referee determines the ball is ready for scrimmage, except for team time-outs (where the clock starts at the snap), after a time count foul (at the snap) and kickoffs (where the clock starts not at the kick but when the ball is first touched after the kick). In the last three minutes of a half, the clock stops whenever the ball becomes dead. On kickoffs, the clock starts when the ball is first touched after the kick. On scrimmages, when it starts depends on what ended the previous play. The clock starts when the ball is ready for scrimmage except that it starts on the snap when on the previous play During the last three minutes of a half, the penalty for failure to place the ball in play within the 20-second play clock, known as a "time count violation" (this foul is known as "delay of game" in American football), is dramatically different from during the first 27 minutes. Instead of the penalty being 5 yards with the down repeated, the base penalty (except during convert attempts) becomes loss of down on first or second down, and 10 yards on third down with the down repeated. In addition, as noted previously, the referee can give possession to the defence for repeated deliberate time count violations on third down. The clock does not run during convert attempts in the last three minutes of a half. If the 15 minutes of a quarter expire while the ball is live, the quarter is extended until the ball becomes dead. If a quarter's time expires while the ball is dead, the quarter is extended for one more scrimmage. A quarter cannot end while a penalty is pending: after the penalty yardage is applied, the quarter is extended one scrimmage. Note that the non-penalized team has the option to decline any penalty it considers disadvantageous, so a losing team cannot indefinitely prolong a game by repeatedly committing infractions. In the CFL, if the game is tied at the end of regulation play, then each team is given an equal number of offensive possessions to break the tie. A coin toss is held to determine which team will take possession first; the first team scrimmages the ball at the opponent's 35-yard line and conducts a series of downs until it scores or loses possession. If the team scores a touchdown, starting with the 2010 season, it is required to attempt a two-point conversion. The other team then scrimmages the ball at the opponent's 35-yard line and has the same opportunity to score. After the teams have completed their possessions, if one team is ahead, then it is declared the winner; otherwise, the two teams each get another chance to score, scrimmaging from the other 35-yard line. After this second round, if there is still no winner, during the regular season the game ends as a tie. In a playoff game, the teams continue to attempt to score from alternating 35-yard lines, until one team is leading after both have had an equal number of possessions. In U Sports football, for the Uteck Bowl, Mitchell Bowl, and Vanier Cup, the same overtime procedure is followed until there is a winner. Officials are responsible for enforcing game rules and monitoring the clock. All officials carry a whistle and wear black-and-white striped shirts and black caps except for the referee, whose cap is white. Each carries a weighted orange flag that is thrown to the ground to signal that a foul has been called. An official who spots multiple fouls will throw their cap as a secondary signal. The seven officials (of a standard seven-man crew; lower levels of play up to the university level use fewer officials) on the field are each tasked with a different set of responsibilities: Another set of officials, the chain crew, is responsible for moving the chains. The chains, consisting of two large sticks with a 10-yard-long chain between them, are used to measure for a first down. The chain crew stays on the sidelines during the game, but if requested by the officials they will briefly bring the chains on to the field to measure. A typical chain crew will have at least three people—two members of the chain crew will hold either of the two sticks, while a third will hold the down marker. The down marker, a large stick with a dial on it, is flipped after each play to indicate the current down and is typically moved to the approximate spot of the ball. The chain crew system has been used for over 100 years and is considered to be an accurate measure of distance, rarely subject to criticism from either side. In the CFL, a game must be delayed if lightning strikes within 10 km (6 mi) of the stadium or for other severe weather conditions, or if dangerous weather is anticipated. In the regular season, if play has not resumed after 1 hour and at least half of the third quarter has been completed, the score stands as final; this happened for the first time on August 9, 2019, when a Saskatchewan–Montreal game was stopped late in the third quarter. If the stoppage is earlier in the game, or if it is a playoff or Grey Cup game, play may be stopped for up to 3 hours and then resume. After 3 hours of stoppage, play is terminated at least for the day. A playoff or Grey Cup game must then be resumed the following day at the point where it left off. In the regular season, if a game is stopped for 3 hours and one team is leading by at least a certain amount, then that team is awarded a win. The size of lead required is 21, 17, or 13 depending on whether the stoppage is in the first, second, or third quarter respectively. If neither team is leading by that much and they are not scheduled to play again in the season, the game is declared a tie. If a regular-season game is stopped for 3 hours and neither team is leading by the required amount to be awarded a win, but the two teams are scheduled to play again later in the season, then the stopped game is decided by a "two-possession shootout" procedure held before the later game is started. The procedure is generally similar to overtime in the CFL, with two major exceptions: each team must play exactly two possessions regardless of what happens; and while the score from the stopped game is not added to the shootout score, it is used instead to determine the yard line where each team starts its possessions, so the team that was leading still has an advantage. The positions in Canadian football have evolved throughout the years, and are not officially defined in the rules. However, there are still several standard positions, as outlined below. The offence must have at least seven players lined up along the line of scrimmage on every play. The players on either end (usually the wide receivers) are eligible to receive forward passes, and may be in motion along the line of scrimmage prior to the snap. The other players on the line of scrimmage (usually the offensive linemen) are ineligible to receive forward passes, and once they are in position, they may not move until the play begins. Offensive positions fit into three general categories: The primary roles of the offensive linemen (or down linemen) are to protect the quarterback so that he can pass, and to help block on running plays. Offensive linemen generally do not run with the ball (unless they recover it on a fumble) or receive a handoff or lateral pass, but there is no rule against it. Offensive linemen include the following positions: Backs are behind the linemen at the start of play. They may run with the ball, and receive handoffs, laterals, and forward passes. They may also be in motion before the play starts. Backs include the following positions: Receivers may start the play either on or behind the line of scrimmage. They may run with the ball, and receive handoffs, laterals, and forward passes. Receivers include the following positions: The rules do not constrain how the defence may arrange itself, other than the requirement that they must remain one yard behind the line of scrimmage until the play starts. Defensive positions fit into three general categories: Special teams are generally used on kicking plays, which include kickoffs, punts, field goal attempts, and extra point attempts. Special teams include the following positions:	[ { "paragraph_id": 0, "text": "Canadian football, or simply football, is a sport in Canada in which two teams of 12 players each compete on a field 110 yards (101 m) long and 65 yards (59 m) wide, attempting to advance a pointed oval-shaped ball into the opposing team's end zone.", "title": "" }, { "paragraph_id": 1, "text": "American and Canadian football have shared origins and are closely related, but have some major differences.", "title": "" }, { "paragraph_id": 2, "text": "Rugby football, from which Canadian football developed, was first recorded in Canada in the early 1860s, taken there by British immigrants, possibly in 1824. Both the Canadian Football League (CFL), the sport's top professional league, and Football Canada, the governing body for amateur play, trace their roots to 1880 and the founding of the Canadian Rugby Football Union.", "title": "" }, { "paragraph_id": 3, "text": "The CFL is the most popular and only major professional Canadian football league. Its championship game, the Grey Cup, is one of Canada's biggest sporting events, attracting a large television audience.", "title": "" }, { "paragraph_id": 4, "text": "Canadian football is also played at high school, junior, collegiate, and semi-professional levels: the Canadian Junior Football League and Quebec Junior Football League are for players aged 18–22, post-secondary institutions compete in U Sports football for the Vanier Cup, and seniors in the Alberta Football League. The Canadian Football Hall of Fame is in Hamilton, Ontario.", "title": "" }, { "paragraph_id": 5, "text": "The first documented football match was a practice game played on November 9, 1861, at University College, University of Toronto (approximately 400 yards or 370 metres west of Queen's Park). One of the participants in the game involving University of Toronto students was Sir William Mulock, later chancellor of the school. A football club was formed at the university soon afterward, although its rules of play at this stage are unclear.", "title": "History" }, { "paragraph_id": 6, "text": "The first written account of a game played was on October 15, 1862, on the Montreal Cricket Grounds. It was between the First Battalion Grenadier Guards and the Second Battalion Scots Fusilier Guards resulting in a win by the Grenadier Guards 3 goals, 2 rouges to nothing. In 1864, at Trinity College, Toronto, F. Barlow Cumberland, Frederick A. Bethune, and Christopher Gwynn, one of the founders of Milton, Massachusetts, devised rules based on rugby football. The game gradually gained a following, with the Hamilton Football Club (later the Hamilton Tiger-Cats) formed on November 3, 1869. Montreal Football Club was formed on April 8, 1872. Toronto Argonaut Football Club was formed on October 4, 1873, and the Ottawa Football Club (later the Ottawa Rough Riders) on September 20, 1876. Of those clubs, only the Toronto club is still in continuous operation today.", "title": "History" }, { "paragraph_id": 7, "text": "This rugby-football soon became popular at Montreal's McGill University. McGill challenged Harvard University to a two-game series in 1874, using a hybrid game of English rugby devised by the University of McGill.", "title": "History" }, { "paragraph_id": 8, "text": "The first attempt to establish a proper governing body and to adopt the current set of Rugby rules was the Foot Ball Association of Canada, organized on March 24, 1873, followed by the Canadian Rugby Football Union (CRFU) founded June 12, 1880, which included teams from Ontario and Quebec. Later both the Ontario Rugby Football Union and Quebec Rugby Football Union (ORFU and QRFU respectively) were formed (January 1883), and then the Interprovincial (1907) and Western Interprovincial Football Union (1936) (IRFU and WIFU). The CRFU reorganized into an umbrella organization forming the Canadian Rugby Union (CRU) in 1891. The immediate forerunner to the current Canadian Football League was established in 1956 when the IRFU and WIFU formed an umbrella organization, the Canadian Football Council (CFC). In 1958 the CFC left the CRU to become the \"Canadian Football League\" (CFL).", "title": "History" }, { "paragraph_id": 9, "text": "The Burnside rules closely resembling American football (which are similar rules developed by Walter Camp for that sport) that were incorporated in 1903 by the ORFU, were an effort to distinguish it from a more rugby-oriented game. The Burnside Rules had teams reduced to 12 men per side, introduced the snap-back system, required the offensive team to gain 10 yards on three downs, eliminated the throw-in from the sidelines, allowed only six men on the line, stated that all goals by kicking were to be worth two points and the opposition was to line up 10 yards from the defenders on all kicks. The rules were an attempt to standardize the rules throughout the country. The CIRFU, QRFU, and CRU refused to adopt the new rules at first. Forward passes were not allowed in the Canadian game until 1929, and touchdowns, which had been five points, were increased to six points in 1956, in both cases several decades after the Americans had adopted the same changes. The primary differences between the Canadian and American games stem from rule changes that the American side of the border adopted but the Canadian side did not (originally, both sides had three downs, goal posts on the goal lines, and unlimited forward motion, but the American side modified these rules and the Canadians did not). The Canadian field width was one rule that was not based on American rules, as the Canadian game was played in wider fields and stadiums that were not as narrow as the American stadiums.", "title": "History" }, { "paragraph_id": 10, "text": "The Grey Cup was established in 1909 after being donated by Albert Grey, 4th Earl Grey, Governor General of Canada, as the championship of teams under the CRU for the Rugby Football Championship of Canada. Initially an amateur competition, it eventually became dominated by professional teams in the 1940s and early 1950s. The Ontario Rugby Football Union, the last amateur organization to compete for the trophy, withdrew from competition after the 1954 season. The move ushered in the modern era of Canadian professional football, culminating in the formation of the present-day Canadian Football League in 1958.", "title": "History" }, { "paragraph_id": 11, "text": "Canadian football has mostly been confined to Canada, with the United States being the only other country to have hosted high-level Canadian football games. The CFL's controversial \"South Division\" as it would come to be officially known attempted to put CFL teams in the United States playing under Canadian rules in 1995. The Expansion was aborted after three years; the Baltimore Stallions were the most successful of the numerous Americans teams to play in the CFL, winning the 83rd Grey Cup. Continuing financial losses, a lack of proper Canadian football venues, a pervasive belief that the American teams were simply pawns to provide the struggling Canadian teams with expansion fee revenue, and the return of the NFL to Baltimore prompted the end of Canadian football on the American side of the border.", "title": "History" }, { "paragraph_id": 12, "text": "The CFL hosted the Touchdown Atlantic regular season game in Nova Scotia in 2005 and New Brunswick in 2010, 2011 and 2013. In 2013, Newfoundland and Labrador became the last province to establish football at the minor league level, with teams playing on the Avalon Peninsula and in Labrador City. The province however has yet to host a college or CFL game. Prince Edward Island, the smallest of the provinces, has also never hosted a CFL game.", "title": "History" }, { "paragraph_id": 13, "text": "On 13 February 2023, IFAF and Football Canada announced in a joint statement that the Canadian Amateur Football Rulebook would be an accepted rules code for international play, but would not be a substitute for world championships or world championship qualification.", "title": "History" }, { "paragraph_id": 14, "text": "“As Football Canada continues to work with IFAF, I believe this opens the door for international friendlies and tournaments to be staged in Canada employing the infrastructure communities have invested in for our sport from coast to coast,” Football Canada president and IFAF General Secretary Jim Mullin said in the joint statement.", "title": "History" }, { "paragraph_id": 15, "text": "Canadian football is played at several levels in Canada; the top league is the professional nine-team Canadian Football League (CFL). The CFL regular season begins in June, and playoffs for the Grey Cup are completed by late November. In cities with outdoor stadiums such as Edmonton, Winnipeg, Calgary, and Regina, low temperatures and icy field conditions can seriously affect the outcome of a game.", "title": "League play" }, { "paragraph_id": 16, "text": "Amateur football is governed by Football Canada. At the university level, 27 teams play in four conferences under the auspices of U Sports; the U Sports champion is awarded the Vanier Cup. Junior football is played by many after high school before joining the university ranks. There are 19 junior teams in three conferences in the Canadian Junior Football League competing for the Canadian Bowl. The Quebec Junior Football League includes teams from Ontario and Quebec who battle for the Manson Cup.", "title": "League play" }, { "paragraph_id": 17, "text": "Semi-professional leagues have grown in popularity in recent years, with the Alberta Football League becoming especially popular. The Northern Football Conference formed in Ontario in 1954 has also surged in popularity for former college players who do not continue to professional football. The Ontario champion plays against the Alberta champion for the \"National Championship\". The Canadian Major Football League is the governing body for the semi-professional game.", "title": "League play" }, { "paragraph_id": 18, "text": "Women's football has gained attention in recent years in Canada. The first Canadian women's league to begin operations was the Maritime Women's Football League in 2004. The largest women's league is the Western Women's Canadian Football League.", "title": "League play" }, { "paragraph_id": 19, "text": "The Canadian football field is 150 yards (137 m) long and 65 yards (59 m) wide, within which the goal areas are 20 yards (18 m) deep, and the goal lines are 110 yards (101 m) apart. Weighted pylons are placed on the inside corner of the intersections of the goal lines and end lines. Including the end zones, the total area of the field is 87,750 square feet (8,152 m).", "title": "Field" }, { "paragraph_id": 20, "text": "At each goal line is a set of 40-foot-high (12 m) goalposts, which consist of two uprights joined by an 18+1⁄2-foot-long (5.6 m) crossbar which is 10 feet (3 m) above the goal line. The goalposts may be H-shaped (both posts fixed in the ground) although in the higher-calibre competitions the tuning-fork design (supported by a single curved post behind the goal line, so that each post starts 10 feet (3 m) above the ground) is preferred.", "title": "Field" }, { "paragraph_id": 21, "text": "The sides of the field are marked by white sidelines, the goal line is marked in white or yellow, and white lines are drawn laterally across the field every 5 yards (4.6 m) from the goal line. These lateral lines are called \"yard lines\" and often marked with the distance in yards from and an arrow pointed toward the nearest goal line. Prior to the early 1980s, arrows were not used and all yard lines (in both multiples of 5 and 10) were usually marked with the distance to the goal line, including the goal line itself which was marked with either a \"0\" or \"00\"; in most stadiums today, only the yard markers in multiples of 10 are marked with numbers, with the goal line sometimes being marked with a \"G\". The centre (55-yard) line usually is marked with a \"C\" (or, more rarely, with a \"55\"). \"Hash marks\" are painted in white, parallel to the yardage lines, at 1 yard (0.9 m) intervals, 24 yards (21.9 m) from the sidelines under amateur rules, but 28 yards (25.6 m) in the CFL.", "title": "Field" }, { "paragraph_id": 22, "text": "On fields that have a surrounding running track, such as Molson Stadium and many universities, the end zones are often cut off in the corners to accommodate the track. Until 1986, the end zones were 25 yards (23 m) deep, giving the field an overall length of 160 yards (150 m), and a correspondingly larger cutoff could be required at the corners. The first field to feature the shorter 20-yard endzones was Vancouver's BC Place (home of the BC Lions), which opened in 1983. This was particularly common among U.S.-based teams during the CFL's American expansion, where few American stadiums were able to accommodate the much longer and noticeably wider CFL field. The end zones in Toronto's BMO Field are only 18 yards instead of 20 yards.", "title": "Field" }, { "paragraph_id": 23, "text": "Teams advance across the field through the execution of quick, distinct plays, which involve the possession of a brown, prolate spheroid ball with ends tapered to a point. The ball has two one-inch-wide white stripes.", "title": "Gameplay" }, { "paragraph_id": 24, "text": "At the beginning of a match, an official tosses a coin and allows the captain of the visiting team to call heads or tails. The captain of the team winning the coin toss is given the option of having first choice, or of deferring first choice to the other captain. The captain making first choice may either choose a) to kick off or receive the kick at the beginning of the half, or b) which direction of the field to play in. The remaining choice is given to the opposing captain. Before the resumption of play in the second half, the captain that did not have first choice in the first half is given first choice. Teams usually choose to defer, so it is typical for the team that wins the coin toss to kick to begin the first half and receive to begin the second.", "title": "Gameplay" }, { "paragraph_id": 25, "text": "Play begins at the start of each half with one team place-kicking the ball from its own end of the field: the 35-yard line in the CFL, the 45-yard line in amateur play. Both teams then attempt to catch the ball. The player who recovers the ball may run while holding the ball, or lateral throw the ball to a teammate.", "title": "Gameplay" }, { "paragraph_id": 26, "text": "Play stops when the ball carrier's knee, elbow, or any other body part aside from the feet and hands, is forced to the ground (a tackle); when a forward pass is not caught on the fly (during a scrimmage); when a touchdown (see below) or a field goal is scored; when the ball leaves the playing area by any means (being carried, thrown, or fumbled out of bounds); or when the ball carrier is in a standing position but can no longer move forwards (called forward progress). If no score has been made, the next play starts from scrimmage.", "title": "Gameplay" }, { "paragraph_id": 27, "text": "Before scrimmage, an official places the ball at the spot it was at the stop of clock, but no nearer than 24 yards from the sideline or 1 yard from the goal line. The line parallel to the goal line passing through the ball (line from sideline to sideline for the length of the ball) is referred to as the line of scrimmage. This line is similar to \"no-man's land\"; players must stay on their respective sides of this line until the play has begun again. For a scrimmage to be valid the team in possession of the football must have seven players, excluding the quarterback, within one yard of the line of scrimmage. The defending team must stay a yard or more back from the line of scrimmage.", "title": "Gameplay" }, { "paragraph_id": 28, "text": "On the field at the beginning of a play are two teams of 12 (and not 11 as in American football). The team in possession of the ball is the offence and the team defending is referred to as the defence. Play begins with a backwards pass through the legs (the snap) by a member of the offensive team, to another member of the offensive team. This is usually the quarterback or punter, but a \"direct snap\" to a running back is also not uncommon. If the quarterback or punter receives the ball, he may then do any of the following:", "title": "Gameplay" }, { "paragraph_id": 29, "text": "Each play constitutes a down. The offence must advance the ball at least ten yards towards the opponents' goal line within three downs or forfeit the ball to their opponents. Once ten yards have been gained the offence gains a new set of three downs (rather than the four downs given in American football). Downs do not accumulate. If the offensive team completes 10 yards on their first play, they lose the other two downs and are granted another set of three. If a team fails to gain ten yards in two downs they usually punt the ball on third down or try to kick a field goal (see below), depending on their position on the field. The team may, however use its third down in an attempt to advance the ball and gain a cumulative 10 yards.", "title": "Gameplay" }, { "paragraph_id": 30, "text": "The ball changes possession in the following instances:", "title": "Gameplay" }, { "paragraph_id": 31, "text": "There are many rules to contact in this type of football. The only player on the field who may be legally tackled is the player currently in possession of the football (the ball carrier). On a passing play a receiver, that is to say, an offensive player sent down the field to receive a pass, may not be interfered with (have his motion impeded, be blocked, etc.) unless he is within five yards of the line of scrimmage. Prior to a pass that goes beyond the line of scrimmage, a defender may not be impeded more than one yard past that line. Otherwise, any player may block another player's passage, so long as he does not hold or trip the player he intends to block. The kicker may not be contacted after the kick but before his kicking leg returns to the ground (this rule is not enforced upon a player who has blocked a kick). The quarterback may not be hit or tackled after throwing the ball, nor may he be hit while in the pocket (i.e. behind the offensive line) prior to that point below the knees or above the shoulders.", "title": "Gameplay" }, { "paragraph_id": 32, "text": "Infractions of the rules are punished with penalties, typically a loss of yardage of 5, 10 or 15 yards against the penalized team. Minor violations such as offside (a player from either side encroaching into scrimmage zone before the play starts) are penalized five yards, more serious penalties (such as holding) are penalized 10 yards, and severe violations of the rules (such as face-masking [grabbing the face mask attached to a player's helmet]) are typically penalized 15 yards. Depending on the penalty, the penalty yardage may be assessed from the original line of scrimmage, from where the violation occurred (for example, for a pass interference infraction), or from where the ball ended after the play. Penalties on the offence may, or may not, result in a loss of down; penalties on the defence may result in a first down being automatically awarded to the offence. For particularly severe conduct, the game official(s) may eject players (ejected players may be substituted for), or in exceptional cases, declare the game over and award victory to one side or the other. Penalties do not affect the yard line which the offence must reach to gain a first down (unless the penalty results in a first down being awarded); if a penalty against the defence results in the first down yardage being attained, then the offence is awarded a first down.", "title": "Gameplay" }, { "paragraph_id": 33, "text": "If the defence is penalized on a two-point convert attempt and the offence chooses to attempt the play again, the offence must attempt another two-point convert; it cannot change to a one-point attempt. Conversely, the offence can attempt a two-point convert following a defensive penalty on a one-point attempt.", "title": "Gameplay" }, { "paragraph_id": 34, "text": "Penalties may occur before a play starts (such as offside), during the play (such as holding), or in a dead-ball situation (such as unsportsmanlike conduct).", "title": "Gameplay" }, { "paragraph_id": 35, "text": "Penalties never result in a score for the offence. For example, a point-of-foul infraction committed by the defence in their end zone is not ruled a touchdown, but instead advances the ball to the one-yard line with an automatic first down. For a distance penalty, if the yardage is greater than half the distance to the goal line, then the ball is advanced half the distance to the goal line, though only up to the one-yard line (unlike American football, in Canadian football no scrimmage may start inside either one-yard line). If the original penalty yardage would have resulted in a first down or moving the ball past the goal line, a first down is awarded.", "title": "Gameplay" }, { "paragraph_id": 36, "text": "In most cases, the non-penalized team will have the option of declining the penalty; in which case the results of the previous play stand as if the penalty had not been called. One notable exception to this rule is if the kicking team on a 3rd down punt play is penalized before the kick occurs: the receiving team may not decline the penalty and take over on downs. After the kick is made, change of possession occurs and subsequent penalties are assessed against either the spot where the ball is caught, or the runback.", "title": "Gameplay" }, { "paragraph_id": 37, "text": "Canadian football distinguishes four ways of kicking the ball:", "title": "Gameplay" }, { "paragraph_id": 38, "text": "On any kicking play, all onside players (the kicker, and teammates behind the kicker at the time of the kick) may recover and advance the ball. Players on the kicking team who are not onside may not approach within five yards of the ball until it has been touched by the receiving team, or by an onside teammate.", "title": "Gameplay" }, { "paragraph_id": 39, "text": "The methods of scoring are:", "title": "Gameplay" }, { "paragraph_id": 40, "text": "Resumption of play following a score is conducted under procedures which vary with the type of score.", "title": "Gameplay" }, { "paragraph_id": 41, "text": "The game consists of two 30-minute halves, each of which is divided into two 15-minute quarters. The clock counts down from 15:00 in each quarter. Timing rules change when there are three minutes remaining in a half. A short break interval of 2 minutes occurs after the end of each quarter (a longer break of 15 minutes at halftime), and the two teams then change goals.", "title": "Gameplay" }, { "paragraph_id": 42, "text": "In the first 27 minutes of a half, the clock stops when:", "title": "Gameplay" }, { "paragraph_id": 43, "text": "The clock starts again when the referee determines the ball is ready for scrimmage, except for team time-outs (where the clock starts at the snap), after a time count foul (at the snap) and kickoffs (where the clock starts not at the kick but when the ball is first touched after the kick).", "title": "Gameplay" }, { "paragraph_id": 44, "text": "In the last three minutes of a half, the clock stops whenever the ball becomes dead. On kickoffs, the clock starts when the ball is first touched after the kick. On scrimmages, when it starts depends on what ended the previous play. The clock starts when the ball is ready for scrimmage except that it starts on the snap when on the previous play", "title": "Gameplay" }, { "paragraph_id": 45, "text": "During the last three minutes of a half, the penalty for failure to place the ball in play within the 20-second play clock, known as a \"time count violation\" (this foul is known as \"delay of game\" in American football), is dramatically different from during the first 27 minutes. Instead of the penalty being 5 yards with the down repeated, the base penalty (except during convert attempts) becomes loss of down on first or second down, and 10 yards on third down with the down repeated. In addition, as noted previously, the referee can give possession to the defence for repeated deliberate time count violations on third down.", "title": "Gameplay" }, { "paragraph_id": 46, "text": "The clock does not run during convert attempts in the last three minutes of a half. If the 15 minutes of a quarter expire while the ball is live, the quarter is extended until the ball becomes dead. If a quarter's time expires while the ball is dead, the quarter is extended for one more scrimmage. A quarter cannot end while a penalty is pending: after the penalty yardage is applied, the quarter is extended one scrimmage. Note that the non-penalized team has the option to decline any penalty it considers disadvantageous, so a losing team cannot indefinitely prolong a game by repeatedly committing infractions.", "title": "Gameplay" }, { "paragraph_id": 47, "text": "In the CFL, if the game is tied at the end of regulation play, then each team is given an equal number of offensive possessions to break the tie. A coin toss is held to determine which team will take possession first; the first team scrimmages the ball at the opponent's 35-yard line and conducts a series of downs until it scores or loses possession. If the team scores a touchdown, starting with the 2010 season, it is required to attempt a two-point conversion. The other team then scrimmages the ball at the opponent's 35-yard line and has the same opportunity to score. After the teams have completed their possessions, if one team is ahead, then it is declared the winner; otherwise, the two teams each get another chance to score, scrimmaging from the other 35-yard line. After this second round, if there is still no winner, during the regular season the game ends as a tie. In a playoff game, the teams continue to attempt to score from alternating 35-yard lines, until one team is leading after both have had an equal number of possessions.", "title": "Gameplay" }, { "paragraph_id": 48, "text": "In U Sports football, for the Uteck Bowl, Mitchell Bowl, and Vanier Cup, the same overtime procedure is followed until there is a winner.", "title": "Gameplay" }, { "paragraph_id": 49, "text": "Officials are responsible for enforcing game rules and monitoring the clock. All officials carry a whistle and wear black-and-white striped shirts and black caps except for the referee, whose cap is white. Each carries a weighted orange flag that is thrown to the ground to signal that a foul has been called. An official who spots multiple fouls will throw their cap as a secondary signal. The seven officials (of a standard seven-man crew; lower levels of play up to the university level use fewer officials) on the field are each tasked with a different set of responsibilities:", "title": "Gameplay" }, { "paragraph_id": 50, "text": "Another set of officials, the chain crew, is responsible for moving the chains. The chains, consisting of two large sticks with a 10-yard-long chain between them, are used to measure for a first down. The chain crew stays on the sidelines during the game, but if requested by the officials they will briefly bring the chains on to the field to measure. A typical chain crew will have at least three people—two members of the chain crew will hold either of the two sticks, while a third will hold the down marker. The down marker, a large stick with a dial on it, is flipped after each play to indicate the current down and is typically moved to the approximate spot of the ball. The chain crew system has been used for over 100 years and is considered to be an accurate measure of distance, rarely subject to criticism from either side.", "title": "Gameplay" }, { "paragraph_id": 51, "text": "In the CFL, a game must be delayed if lightning strikes within 10 km (6 mi) of the stadium or for other severe weather conditions, or if dangerous weather is anticipated. In the regular season, if play has not resumed after 1 hour and at least half of the third quarter has been completed, the score stands as final; this happened for the first time on August 9, 2019, when a Saskatchewan–Montreal game was stopped late in the third quarter.", "title": "Gameplay" }, { "paragraph_id": 52, "text": "If the stoppage is earlier in the game, or if it is a playoff or Grey Cup game, play may be stopped for up to 3 hours and then resume. After 3 hours of stoppage, play is terminated at least for the day. A playoff or Grey Cup game must then be resumed the following day at the point where it left off.", "title": "Gameplay" }, { "paragraph_id": 53, "text": "In the regular season, if a game is stopped for 3 hours and one team is leading by at least a certain amount, then that team is awarded a win. The size of lead required is 21, 17, or 13 depending on whether the stoppage is in the first, second, or third quarter respectively. If neither team is leading by that much and they are not scheduled to play again in the season, the game is declared a tie.", "title": "Gameplay" }, { "paragraph_id": 54, "text": "If a regular-season game is stopped for 3 hours and neither team is leading by the required amount to be awarded a win, but the two teams are scheduled to play again later in the season, then the stopped game is decided by a \"two-possession shootout\" procedure held before the later game is started. The procedure is generally similar to overtime in the CFL, with two major exceptions: each team must play exactly two possessions regardless of what happens; and while the score from the stopped game is not added to the shootout score, it is used instead to determine the yard line where each team starts its possessions, so the team that was leading still has an advantage.", "title": "Gameplay" }, { "paragraph_id": 55, "text": "The positions in Canadian football have evolved throughout the years, and are not officially defined in the rules. However, there are still several standard positions, as outlined below.", "title": "Positions" }, { "paragraph_id": 56, "text": "The offence must have at least seven players lined up along the line of scrimmage on every play. The players on either end (usually the wide receivers) are eligible to receive forward passes, and may be in motion along the line of scrimmage prior to the snap. The other players on the line of scrimmage (usually the offensive linemen) are ineligible to receive forward passes, and once they are in position, they may not move until the play begins.", "title": "Positions" }, { "paragraph_id": 57, "text": "Offensive positions fit into three general categories:", "title": "Positions" }, { "paragraph_id": 58, "text": "The primary roles of the offensive linemen (or down linemen) are to protect the quarterback so that he can pass, and to help block on running plays. Offensive linemen generally do not run with the ball (unless they recover it on a fumble) or receive a handoff or lateral pass, but there is no rule against it.", "title": "Positions" }, { "paragraph_id": 59, "text": "Offensive linemen include the following positions:", "title": "Positions" }, { "paragraph_id": 60, "text": "Backs are behind the linemen at the start of play. They may run with the ball, and receive handoffs, laterals, and forward passes. They may also be in motion before the play starts.", "title": "Positions" }, { "paragraph_id": 61, "text": "Backs include the following positions:", "title": "Positions" }, { "paragraph_id": 62, "text": "Receivers may start the play either on or behind the line of scrimmage. They may run with the ball, and receive handoffs, laterals, and forward passes.", "title": "Positions" }, { "paragraph_id": 63, "text": "Receivers include the following positions:", "title": "Positions" }, { "paragraph_id": 64, "text": "The rules do not constrain how the defence may arrange itself, other than the requirement that they must remain one yard behind the line of scrimmage until the play starts.", "title": "Positions" }, { "paragraph_id": 65, "text": "Defensive positions fit into three general categories:", "title": "Positions" }, { "paragraph_id": 66, "text": "Special teams are generally used on kicking plays, which include kickoffs, punts, field goal attempts, and extra point attempts. Special teams include the following positions:", "title": "Positions" } ]	Canadian football, or simply football, is a sport in Canada in which two teams of 12 players each compete on a field 110 yards (101 m) long and 65 yards (59 m) wide, attempting to advance a pointed oval-shaped ball into the opposing team's end zone. American and Canadian football have shared origins and are closely related, but have some major differences. Rugby football, from which Canadian football developed, was first recorded in Canada in the early 1860s, taken there by British immigrants, possibly in 1824. Both the Canadian Football League (CFL), the sport's top professional league, and Football Canada, the governing body for amateur play, trace their roots to 1880 and the founding of the Canadian Rugby Football Union. The CFL is the most popular and only major professional Canadian football league. Its championship game, the Grey Cup, is one of Canada's biggest sporting events, attracting a large television audience. Canadian football is also played at high school, junior, collegiate, and semi-professional levels: the Canadian Junior Football League and Quebec Junior Football League are for players aged 18–22, post-secondary institutions compete in U Sports football for the Vanier Cup, and seniors in the Alberta Football League. The Canadian Football Hall of Fame is in Hamilton, Ontario.	2001-11-01T07:07:37Z	2023-12-18T04:32:13Z	[ "Template:Image label end", "Template:Reflist", "Template:Cite encyclopedia", "Template:Sport in Canada", "Template:American football concepts", "Template:See also", "Template:More citations needed", "Template:Clarify", "Template:CFL seasons", "Template:Football codes", "Template:Short description", "Template:History of American football", "Template:Cite web", "Template:Team Sport", "Template:Use Canadian English", "Template:Infobox sport", "Template:Citation needed", "Template:Distinguish", "Template:Image label begin", "Template:Cite news", "Template:Cite book", "Template:Commons category", "Template:Convert", "Template:Image label small", "Template:About", "Template:Portal", "Template:Authority control" ]	https://en.wikipedia.org/wiki/Canadian_football
6,966	Chinese calendar	There are various types and subtypes of the Chinese calendar and horology, which over a millennium plus history has produced many variations. The topic of the Chinese calendar includes various traditional types of the Chinese calendar, of which particularly prominent are, identifying years, months, and days according to astronomical phenomena and calculations, with generally an especial effort to correlate the solar and lunar cycles experienced on earth—but which are known to mathematically require some degree of approximation. Typical features of early calendars include the use of the sexagenary cycle-based ganzhi system's repeating cycles of Heavenly Stems and Earthly Branches. The logic of the various permutations of the Chinese calendar has been based in considerations such as the technical from mathematics and astronomy, the philosophical considerations, and the political, and the resulting disparities between different calendars is significant and notable. Various similar calendar systems are also known from various regions or ethnic groups of Central Asia, South Asia, and other areas. Indeed, the Chinese calendar has influenced and been influenced by most parts of the world these days. One particularly popular feature is the Chinese zodiac. The Chinese calendar and horology includes multifaceted methods of computing years, eras, months, days and hours (with modern horology even splitting the seconds). Epochs are one of the important features of calendar systems. An epoch is a particular point in time at which a calendar system may use as its initial time reference, allowing for the consecutive numbering of years from a chosen starting year, date, or time: this is known as an epoch, in the Chinese calendar system, examples include the inauguration of Huangdi or the birth of Confucius. Also, many dynasties had their own dating systems, which could include regnal eras based on the inauguration of a dynasty, the enthronement of a particular monarch, or eras arbitrarily designated due to political or other considerations, such as a desire for a change the luck. Era names are useful for determining dates on artifacts such as ceramics, which were often traditionally dated by an era name during the production process. Variations of the lunisolar calendar are a particularly prominent feature of the Chinese calendar system. The topic of the Chinese calendar includes various traditional types of the Chinese calendar, of which particularly prominent are, identifying years, months, and days according to astronomical phenomena and calculations, with generally an especial effort to correlate the solar and lunar cycles experienced on earth—but which are known to mathematically require some degree of approximation. One of the major features of some traditional calendrical systems in China (and elsewhere) was the idea of the sexagenary cycle. The Chinese lunisolar calendar has had several significant variations over the course of time and history, and despite the name also considers various other astronomical phenomena besides the cycles of the sun and the moon, such as the planets and the constellations (or mansions) of asterisms along the ecliptic. Many Chinese holidays ancient and modern have been determined by a lunisolar calendar or considerations of the lunisolar calendar, now generally combined with more modern calendar considerations. Solar and agricultural calendars have a long history in China. Purely lunar calendar systems were known in China, however they tended to be of limited utility, and were not widely accepted by farmers who for agricultural purposes needed to focus on predictability of seasons for planting and harvesting purposes and to thereby produce a useful agricultural calendar. For farming purposes and keeping track of the seasons Chinese solar calendars were particularly useful. The publication of multipurpose and agricultural almanacs has been a longstanding tradition in China. The horology of the Chinese calendar also includes variations of the modern Chinese calendar, influenced by the Gregorian calendar. Variations include methodologies of the People's Republic of China and Taiwan. An epoch is a point in time chosen as the origin of a particular calendar era, thus serving as a reference point from which subsequent time or dates are measured. The use of epochs in Chinese calendar system allow for a chronological starting point from whence to begin point continuously numbering subsequent dates. Various epochs have been used. Similarly, nomenclature similar to that of the Christian era has occasionally been used: No reference date is universally accepted. The most popular is the Gregorian calendar (公曆; 公历; gōnglì; 'common calendar'). During the 17th century, the Jesuits tried to determine the epochal year of the Han calendar. In his Sinicae historiae decas prima (published in Munich in 1658), Martino Martini (1614–1661) dated the Yellow Emperor's ascension at 2697 BCE and began the Chinese calendar with the reign of Fuxi (which, according to Martini, began in 2952 BCE). Philippe Couplet's 1686 Chronological table of Chinese monarchs (Tabula chronologica monarchiae sinicae) gave the same date for the Yellow Emperor. The Jesuits' dates provoked interest in Europe, where they were used for comparison with Biblical chronology. Modern Chinese chronology has generally accepted Martini's dates, except that it usually places the reign of the Yellow Emperor at 2698 BCE and omits his predecessors Fuxi and Shennong as "too legendary to include". Publications began using the estimated birth date of the Yellow Emperor as the first year of the Han calendar in 1903, with newspapers and magazines proposing different dates. Jiangsu province counted 1905 as the year 4396 (using a year 1 of 2491 BCE, and implying that 2023 CE is 4514), and the newspaper Ming Pao (明報) reckoned 1905 as 4603 (using a year 1 of 2698 BCE, and implying that 2023 CE is 4721). Liu Shipei (劉師培, 1884–1919) created the Yellow Emperor Calendar (黃帝紀元, 黃帝曆 or 軒轅紀年), with year 1 as the birth of the emperor (which he determined as 2711 BCE, implying that 2023 CE is 4734). There is no evidence that this calendar was used before the 20th century. Liu calculated that the 1900 international expedition sent by the Eight-Nation Alliance to suppress the Boxer Rebellion entered Beijing in the 4611th year of the Yellow Emperor. Taoists later adopted Yellow Emperor Calendar and named it Tao Calendar (道曆). On 2 January 1912, Sun Yat-sen announced changes to the official calendar and era. 1 January was 14 Shíyīyuè 4609 Huángdì year, assuming a year 1 of 2698 BCE, making 2023 CE year 4721. Many overseas Chinese communities like San Francisco's Chinatown adopted the change. The modern Chinese standard calendar uses the epoch of the Gregorian calendar, which is on January 1st of the year 1 CE. Lunisolar calendars involve correlations of the cycles of the sun (solar) and the moon (lunar). A solar calendar keeps track of the seasons as the earth and the sun move in the solar system relatively to each other. A purely solar calendar may be useful in planning times for agricultural activities such as planting and harvesting. Solar calendars tend to use astronomically observable points of reference such as equinoxes and solstices, events which may be approximately predicted using fundamental methods of observation and basic mathematical analysis. The topic of the Chinese calendar also includes variations of the modern Chinese calendar, influenced by the Gregorian calendar. Variations include methodologies of the People's Republic of China and Taiwan. In China, the modern calendar is defined by the Chinese national standard GB/T 33661–2017, "Calculation and Promulgation of the Chinese Calendar", issued by the Standardization Administration of China on May 12, 2017. Although modern-day China uses the Gregorian calendar, the traditional Chinese calendar governs holidays, such as the Chinese New Year and Lantern Festival, in both China and overseas Chinese communities. It also provides the traditional Chinese nomenclature of dates within a year which people use to select auspicious days for weddings, funerals, moving or starting a business. The evening state-run news program Xinwen Lianbo in the People's Republic of China continues to announce the months and dates in both the Gregorian and the traditional lunisolar calendar. The Chinese calendar system has a long history, which has traditionally been associated with specific dynastic periods. Various individual calendar types have been developed with different names. There are various Chinese terms for calendar variations including: Nongli Calendar (traditional Chinese: 農曆; simplified Chinese: 农历; pinyin: nónglì; lit. 'agricultural calendar') Jiuli Calendar (traditional Chinese: 舊曆; simplified Chinese: 旧历; pinyin: jiùlì; Jyutping: Gau6 Lik6; lit.'former calendar') Laoli Calendar (traditional Chinese: 老曆; simplified Chinese: 老历; pinyin: lǎolì; lit. 'old calendar') Zhongli Calendar (traditional Chinese: 中曆; simplified Chinese: 中历; pinyin: zhōnglì; Jyutping: zung1 lik6; lit. 'Chinese calendar') Huali Calendar (traditional Chinese: 華曆; simplified Chinese: 华历; pinyin: huálì; Jyutping: waa4 lik6; lit. 'Chinese calendar') The traditional Chinese calendar was developed between 771 and 476 BCE, during the Spring and Autumn period of the Eastern Zhou dynasty. Solar calendars were used before the Zhou dynasty period, along with the basic sexagenary system. One version of the solar calendar is the five-elements calendar (五行曆; 五行历), which derives from the Wu Xing. A 365-day year was divided into five phases of 73 days, with each phase corresponding to a Day 1 Wu Xing element. A phase began with a governing-element day (行御), followed by six 12-day weeks. Each phase consisted of two three-week months, making each year ten months long. Years began on a jiǎzǐ (甲子) day (and a 72-day wood phase), followed by a bǐngzǐ day (丙子) and a 72-day fire phase; a wùzǐ (戊子) day and a 72-day earth phase; a gēngzǐ (庚子) day and a 72-day metal phase, and a rénzǐ day (壬子) followed by a water phase. Other days were tracked using the Yellow River Map (He Tu). Another version is a four-quarters calendar (四時八節曆; 四时八节历; 'four sections', 'eight seasons calendar', or 四分曆; 四分历). The weeks were ten days long, with one month consisting of three weeks. A year had 12 months, with a ten-day week intercalated in summer as needed to keep up with the tropical year. The 10 Heavenly Stems and 12 Earthly Branches were used to mark days. A third version is the balanced calendar (調曆; 调历). A year was 365.25 days, and a month was 29.5 days. After every 16th month, a half-month was intercalated. According to oracle bone records, the Shang dynasty calendar (c. 1600 – c. 1046 BCE) was a balanced calendar with 12 to 14 months in a year; the month after the winter solstice was Zhēngyuè. Modern historical knowledge and records are limited for the earlier calendars. These calendars are known as the six ancient calendars (古六曆; 古六历), or quarter-remainder calendars, (四分曆; 四分历; sìfēnlì), since all calculate a year as 365+1⁄4 days long. Months begin on the day of the new moon, and a year has 12 or 13 months. Intercalary months (a 13th month) are added to the end of the year. The Qiang and Dai calendars are modern versions of the Zhuanxu calendar, used by mountain peoples. The first lunisolar calendar was the Zhou calendar (周曆; 周历), introduced under the Zhou dynasty (1046 BC – 256 BCE). This calendar sets the beginning of the year at the day of the new moon before the winter solstice. Several competing lunisolar calendars were also introduced as Zhou devolved into the Warring States, especially by states fighting Zhou control during the Warring States period (perhaps 475-221 BCE). The state of Lu issued its own Lu calendar(魯曆; 鲁历). Jin issued the Xia calendar (夏曆; 夏历) with a year beginning on the day of the new moon nearest the March equinox. Qin issued the Zhuanxu calendar (顓頊曆; 颛顼历), with a year beginning on the day of the new moon nearest the winter solstice. Song's Yin calendar (殷曆; 殷历) began its year on the day of the new moon after the winter solstice. After Qin Shi Huang unified China under the Qin dynasty in 221 BCE, the Qin calendar (秦曆; 秦历) was introduced. It followed most of the rules governing the Zhuanxu calendar, but the month order was that of the Xia calendar; the year began with month 10 and ended with month 9, analogous to a Gregorian calendar beginning in October and ending in September. The intercalary month, known as the second Jiǔyuè (後九月; 后九月; 'later Jiǔyuè'), was placed at the end of the year. The Qin calendar was used going into the Han dynasty. Emperor Wu of Han r. 141 – 87 BCE introduced reforms in the seventh of the eleven named eras of his reign, Tàichū (Chinese: 太初; pinyin: Tàichū; lit. 'Grand Beginning'), 104 BC – 101 BCE. His Tàichū Calendar (太初曆; 太初历; 'grand beginning calendar') defined a solar year as 365+385⁄1539 days, and the lunar month had 29+43⁄81 days. Since ( 365 + 385 1539 ) × 19 = ( 29 + 43 81 ) × ( 19 × 12 + 7 ) {\displaystyle \left(365+{\frac {385}{1539}}\right)\times 19=\left(29+{\frac {43}{81}}\right)\times \left(19\times 12+7\right)} the 19 years cycle used for the 7 additional months was taken as an exact one, and not as an approximation. This calendar introduced the 24 solar terms, dividing the year into 24 equal parts. Solar terms were paired, with the 12 combined periods known as climate terms. The first solar term of the period was known as a pre-climate (节气), and the second was a mid-climate (中气). Months were named for the mid-climate to which they were closest, and a month without a mid-climate was an intercalary month. The Taichu calendar established a framework for traditional calendars, with later calendars adding to the basic formula. The Dàmíng Calendar (大明曆; 大明历; 'brightest calendar'), created in the Northern and Southern Dynasties by Zu Chongzhi (429–500 AD), introduced the equinoxes. The use of syzygy to determine the lunar month was first described in the Tang dynasty Wùyín Yuán Calendar (戊寅元曆; 戊寅元历; 'earth tiger epoch calendar'). The Yuan dynasty Shòushí calendar (授時曆; 授时历; 'season granting calendar') used spherical trigonometry to find the length of the tropical year. The calendar had a 365.2425-day year, identical to the Gregorian calendar. Although the Chinese calendar lost its place as the country's official calendar at the beginning of the 20th century, its use has continued. The Republic of China Calendar published by the Beiyang government of the Republic of China still listed the dates of the Chinese calendar in addition to the Gregorian calendar. In 1929, the Nationalist government tried to ban the traditional Chinese calendar. The Kuómín Calendar published by the government no longer listed the dates of the Chinese calendar. However, Chinese people were used to the traditional calendar and many traditional customs were based on the Chinese calendar. The ban failed and was lifted in 1934. The latest Chinese calendar was "New Edition of Wànniánlì, revised edition", edited by Beijing Purple Mountain Observatory, People's Republic of China. From 1645 to 1913 the Shíxiàn or Chongzhen was developed. During the late Ming dynasty, the Chinese Emperor appointed Xu Guangqi in 1629 to be the leader of the ShiXian calendar reform. Assisted by Jesuits, he translated Western astronomical works and introduced new concepts, such as those of Nicolaus Copernicus, Johannes Kepler, Galileo Galilei, and Tycho Brahe; however, the new calendar was not released before the end of the dynasty. In the early Qing dynasty, Johann Adam Schall von Bell submitted the calendar which was edited by the lead of Xu Guangqi to the Shunzhi Emperor. The Qing government issued it as the Shíxiàn (seasonal) calendar. In this calendar, the solar terms are 15° each along the ecliptic and it can be used as a solar calendar. However, the length of the climate term near the perihelion is less than 30 days and there may be two mid-climate terms. The Shíxiàn calendar changed the mid-climate-term rule to "decide the month in sequence, except the intercalary month." The present traditional calendar follows the Shíxiàn calendar, except: To optimize the Chinese calendar, astronomers have proposed a number of changes. Gao Pingzi (高平子; 1888–1970), a Chinese astronomer who co-founded the Purple Mountain Observatory, proposed that month numbers be calculated before the new moon and solar terms to be rounded to the day. Since the intercalary month is determined by the first month without a mid-climate and the mid-climate time varies by time zone, countries that adopted the calendar but calculate with their own time could vary from the time in China. Days begin and end at midnight, and months begin on the day of the new moon. Years start on the second (or third) new moon after the winter solstice. Solar terms govern the beginning, middle, and end of each month. A sexagenary cycle, comprising the heavenly stems (Chinese: 干; pinyin: gān) and the earthly branches (Chinese: 支; pinyin: zhī), is used as identification alongside each year and month, including intercalary months or leap months. Months are also annotated as either long (Chinese: 大; lit. 'big' for months with 30 days) or short (Chinese: 小; lit. 'small' for months with 29 days). The traditional Chinese calendar's elements are: The Chinese calendar is lunisolar, similar to the Hindu, Hebrew and ancient Babylonian calendars. The movements of the Sun, Moon, Mercury, Venus, Mars, Jupiter and Saturn (known as the seven luminaries) are the references for calendar calculations. The Big Dipper is the celestial compass, and its handle's direction indicates or some said determines the season and month. The stars are divided into Three Enclosures and 28 Mansions according to their location in the sky relative to Ursa Minor, at the center. Each mansion is named with a character describing the shape of its principal asterism. The Three Enclosures are Purple Forbidden, (紫微), Supreme Palace (太微), and Heavenly Market. (天市) The eastern mansions are 角, 亢, 氐, 房, 心, 尾, 箕. Southern mansions are 井, 鬼, 柳, 星, 張, 翼, 轸. Western mansions are 奎, 婁, 胃, 昴, 畢, 參, 觜. Northern mansions are 斗, 牛, 女, 虛, 危, 室, 壁. The moon moves through about one lunar mansion per day, so the 28 mansions were also used to count days. In the Tang dynasty, Yuan Tiangang (袁天罡) matched the 28 mansions, seven luminaries and yearly animal signs to yield combinations such as "horn-wood-flood dragon" (角木蛟). The names and determinative stars of the mansions are: Several coding systems are used to avoid ambiguity. The Heavenly Stems is a decimal system. The Earthly Branches, a duodecimal system, mark dual hours (時; 时; shí or 時辰; 时辰; shíchen) and climatic terms. The 12 characters progress from the first day with the same branch as the month (first Yín day (寅日) of Zhēngyuè; first Mǎo day (卯日) of Èryuè), and count the days of the month. The stem-branches is a sexagesimal system. The Heavenly Stems and Earthly Branches make up 60 stem-branches. The stem branches mark days and years. The five Wu Xing elements are assigned to each stem, branch, or stem branch. China has used the Western hour-minute-second system to divide the day since the Qing dynasty. Several era-dependent systems had been in use; systems using multiples of twelve and ten were popular, since they could be easily counted and aligned with the Heavenly Stems and Earthly Branches. As early as the Bronze Age Xia dynasty, days were grouped into nine- or ten-day weeks known as xún (旬). Months consisted of three xún. The first 10 days were the early xún (上旬), the middle 10 the mid xún (中旬), and the last nine (or 10) days were the late xún (下旬). Japan adopted this pattern, with 10-day-weeks known as jun (旬). In Korea, they were known as sun (순,旬). The structure of xún led to public holidays every five or ten days. Officials of the Han dynasty were legally required to rest every five days (twice a xún, or 5–6 times a month). The name of these breaks became huan (澣; 浣, "wash"). Grouping days into sets of ten is still used today in referring to specific natural events. "Three Fu" (三伏), a 29–30-day period which is the hottest of the year, reflects its three-xún length. After the winter solstice, nine sets of nine days were counted to calculate the end of winter. The seven-day week was adopted from the Hellenistic system by the 4th century AD, although its method of transmission into China is unclear. It was again transmitted to China in the 8th century by Manichaeans via Kangju (a Central Asian kingdom near Samarkand), and is the most-used system in modern China. Months are defined by the time between new moons, which averages approximately 29+17⁄32 days. There is no specified length of any particular Chinese month, so the first month could have 29 days (short month, 小月) in some years and 30 days (long month, 大月) in other years. A 12-month-year using this system has 354 days, which would drift significantly from the tropical year. To fix this, traditional Chinese years have a 13-month year approximately once every three years. The 13-month version has the same long and short months alternating, but adds a 30-day leap month (閏月; rùnyuè). Years with 12 months are called common years, and 13-month years are known as long years. Although most of the above rules were used until the Tang dynasty, different eras used different systems to keep lunar and solar years aligned. The synodic month of the Taichu calendar was 29+43⁄81 days long. The 7th-century, Tang-dynasty Wùyín Yuán Calendar was the first to determine month length by synodic month instead of the cycling method. Since then, month lengths have primarily been determined by observation and prediction. The days of the month are always written with two characters and numbered beginning with 1. Days one to 10 are written with the day's numeral, preceded by the character Chū (初); Chūyī (初一) is the first day of the month, and Chūshí (初十) the 10th. Days 11 to 20 are written as regular Chinese numerals; Shíwǔ (十五) is the 15th day of the month, and Èrshí (二十) the 20th. Days 21 to 29 are written with the character Niàn (廿) before the characters one through nine; Niànsān (廿三), for example, is the 23rd day of the month. Day 30 (when applicable) is written as the numeral Sānshí (三十). History books use days of the month numbered with the 60 stem-branches: 天聖元年…二月…丁巳，奉安太祖、太宗御容于南京鴻慶宮. Tiānshèng 1st year…Èryuè…Dīngsì, the emperor's funeral was at his temple, and the imperial portrait was installed in Nanjing's Hongqing Palace. Because astronomical observation determines month length, dates on the calendar correspond to moon phases. The first day of each month is the new moon. On the seventh or eighth day of each month, the first-quarter moon is visible in the afternoon and early evening. On the 15th or 16th day of each month, the full moon is visible all night. On the 22nd or 23rd day of each month, the last-quarter moon is visible late at night and in the morning. Since the beginning of the month is determined by when the new moon occurs, other countries using this calendar use their own time standards to calculate it; this results in deviations. The first new moon in 1968 was at 16:29 UTC on 29 January. Since North Vietnam used UTC+07:00 to calculate their Vietnamese calendar and South Vietnam used UTC+08:00 (Beijing time) to calculate theirs, North Vietnam began the Tết holiday at 29 January at 23:29 while South Vietnam began it on 30 January at 00:15. The time difference allowed asynchronous attacks in the Tet Offensive. Lunar months were originally named according to natural phenomena. Current naming conventions use numbers as the month names. Every month is also associated with one of the twelve Earthly Branches. Though the numbered month names are often used for the corresponding month number in the Gregorian calendar, it is important to realize that the numbered month names are not interchangeable with the Gregorian months when talking about lunar dates. One may identify the heavenly stem and earthly branch corresponding to a particular day in the month, and those corresponding to its month, and those to its year, to determine the Four Pillars of Destiny associated with it, for which the Tung Shing, also referred to as the Chinese Almanac of the year, or the Huangli, and containing the essential information concerning Chinese astrology, is the most convenient publication to consult. Days rotate through a sexagenary cycle marked by coordination between heavenly stems and earthly branches, hence the referral to the Four Pillars of Destiny as, "Bazi", or "Birth Time Eight Characters", with each pillar consisting of a character for its corresponding heavenly stem, and another for its earthly branch. Since Huangli days are sexagenaric, their order is quite independent of their numeric order in each month, and of their numeric order within a week (referred to as True Animals in relation to the Chinese zodiac). Therefore, it does require painstaking calculation for one to arrive at the Four Pillars of Destiny of a particular given date, which rarely outpaces the convenience of simply consulting the Huangli by looking up its Gregorian date. The solar year (歲; 岁; Suì), the time between winter solstices, is divided into 24 solar terms known as jié qì (節氣). Each term is a 15° portion of the ecliptic. These solar terms mark both Western and Chinese seasons, as well as equinoxes, solstices, and other Chinese events. The even solar terms (marked with "Z", for Chinese: 中氣, Zhongqi) are considered the major terms, while the odd solar terms (marked with "J", for Chinese: 節氣, Jieqi) are deemed minor. The solar terms qīng míng (清明) on 5 April and dōng zhì (冬至) on 22 December are both celebrated events in China. The calendar solar year, known as the suì, (歲; 岁) begins on the December solstice and proceeds through the 24 solar terms. Since the speed of the Sun's apparent motion in the elliptical is variable, the time between major solar terms is not fixed. This variation in time between major solar terms results in different solar year lengths. There are generally 11 or 12 complete months, plus two incomplete months around the winter solstice, in a solar year. The complete months are numbered from 0 to 10, and the incomplete months are considered the 11th month. If there are 12 complete months in the solar year, it is known as a leap solar year, or leap suì. Due to the inconsistencies in the length of the solar year, different versions of the traditional calendar might have different average solar year lengths. For example, one solar year of the 1st century BCE Tàichū calendar is 365+385⁄1539 (365.25016) days. A solar year of the 13th-century Shòushí calendar is 365+97⁄400 (365.2425) days, identical to the Gregorian calendar. The additional .00766 day from the Tàichū calendar leads to a one-day shift every 130.5 years. Pairs of solar terms are climate terms, or solar months. The first solar term is "pre-climate" (節氣; 节气; Jiéqì), and the second is "mid-climate" (中氣; 中气; Zhōngqì). If there are 12 complete months within a solar year, the first month without a mid-climate is the leap, or intercalary, month. In other words, the first month that does not include a major solar term is the leap month. Leap months are numbered with rùn 閏, the character for "intercalary", plus the name of the month they follow. In 2017, the intercalary month after month six was called Rùn Liùyuè, or "intercalary sixth month" (閏六月) and written as 6i or 6+. The next intercalary month (in 2020, after month four) will be called Rùn Sìyuè (閏四月) and written 4i or 4+. The lunisolar year begins with the first spring month, Zhēngyuè (正月; 'capital month'), and ends with the last winter month, Làyuè (臘月; 腊月; 'sacrificial month'). All other months are named for their number in the month order. See below on the timing of the Chinese New Year. Years were traditionally numbered by the reign in ancient China, but this was abolished after founding the People's Republic of China in 1949. For example, the year from 12 February 2021 to 31 January 2022 was a Xīnchǒu year (辛丑年) of 12 months or 354 days. The Tang dynasty used the Earthly Branches to mark the months from December 761 to May 762. Over this period, the year began with the winter solstice. In China, a person's official age is based on the Gregorian calendar. For traditional use, age is based on the Chinese Sui calendar. A child is considered one year old a hundred days after birth (9 months gestation plus 3 months). After each Chinese New Year, one year is added to their traditional age. Their age therefore is the number of Chinese years which have passed. Due to the potential for confusion, the age of infants is often given in months instead of years. After the Gregorian calendar was introduced in China, the Chinese traditional-age was referred to as the "nominal age" (虛歲; 虚岁; xūsuì; 'incomplete age') and the Gregorian age was known as the "real age" (實歲; 实岁; shísùi; 'whole age'). Ancient China numbered years from an emperor's ascension to the throne or his declaration of a new era name. The first recorded reign title was Jiànyuán (建元), from 140 BCE; the last reign title was Xuāntǒng (宣統; 宣统), from 1908 CE. The era system was abolished in 1912, after which the current or Republican era was used. The 60 stem-branches have been used to mark the date since the Shang dynasty (1600–1046 BC). Astrologers knew that the orbital period of Jupiter is about 12×361 = 4332 days, which they divided period into 12 years (歲; 岁; suì) of 361 days each. The stem-branches system solved the era system's problem of unequal reign lengths. The date of the Chinese New Year accords with the patterns of the lunisolar calendar and hence is variable from year to year. The invariant between years is that the winter solstice, Dongzhi is required to be in the eleventh month of the year. This means that Chinese New Year will be on the second new moon after the previous winter solstice, unless there is a leap month 11 or 12 in the previous year. This rule is accurate, however there are two other mostly (but not completely) accurate rules that are commonly stated: It has been found that Chinese New Year moves back by either 10, 11, or 12 days in most years. If it falls on or before 31 January, then it moves forward in the next year by either 18, 19, or 20 days. Phenology is the study of periodic events in biological life cycles and how these are influenced by seasonal and interannual variations in climate, as well as habitat factors (such as elevation). The plum-rains season (梅雨), the rainy season in late spring and early summer, begins on the first bǐng day after Mangzhong (芒種) and ends on the first wèi day after Xiaoshu (小暑). The Three Fu (三伏; sānfú) are three periods of hot weather, counted from the first gēng day after the summer solstice. The first fu (初伏; chūfú) is 10 days long. The mid-fu (中伏; zhōngfú) is 10 or 20 days long. The last fu (末伏; mòfú) is 10 days from the first gēng day after the beginning of autumn. The Shujiu cold days (數九; shǔjǐu; 'counting to nine') are the 81 days after the winter solstice (divided into nine sets of nine days), and are considered the coldest days of the year. Each nine-day unit is known by its order in the set, followed by "nine" (九). In traditional Chinese culture, "nine" represents the infinity, which is also the number of "Yang". People believe that the nine times accumulation of "Yang" gradually reduces the "Yin", and finally the weather becomes warm. Various traditional and religious holidays shared by communities throughout the world use the Chinese (Lunisolar) calendar: The Chinese New Year (known as the Spring Festival/春節 in China) is on the first day of the first month and was traditionally called the Yuan Dan (元旦) or Zheng Ri (正日). In Vietnam, it is known as Tết Nguyên Đán (節元旦) and in Korea, it is known as 설날. Traditionally it was the most important holiday of the year. It is an official holiday in China, Hong Kong, Macau, Taiwan, Vietnam, Korea, the Philippines, Malaysia, Singapore, Indonesia, and Mauritius. It is also a public holiday in Thailand's Narathiwat, Pattani, Yala, and Satun provinces and is an official public school holiday in New York City. The Double Third Festival is on the third day of the third month and in Korea is known as 삼짇날 (samjinnal). The Dragon Boat Festival, or the Duanwu Festival (端午節), is on the fifth day of the fifth month and is an official holiday in China, Hong Kong, Macau, and Taiwan. It is also celebrated in Vietnam where it is known as Tết Đoan Ngọ (節端午) and in Korea where it is known as 단오 (端午) (Dano) or 수릿날 (戌衣日/水瀨日) (surinal) (both Hanja are used as they are homonyms). The Qixi Festival (七夕節) is celebrated in the evening of the seventh day of the seventh month. It is also celebrated in Vietnam where it is known as Thất tịch (七夕) and in Korea where is known as 칠석 (七夕) (chilseok). The Double Ninth Festival (重陽節) is celebrated on the ninth day of the ninth month. It is also celebrated in Vietnam where it is known as Tết Trùng Cửu (節重九) and in Korea where it is known as 중양절 (jungyangjeol). The Lantern Festival is celebrated on the fifteenth day of the first month and was traditionally called the Yuan Xiao (元宵) or Shang Yuan Festival (上元節). In Vietnam, it is known as Tết Thượng Nguyên (節上元) and in Korea, it is known as 대보름 (大보름) Daeboreum (or the Great Full Month). The Zhong Yuan Festival is celebrated on the fifteenth day of the seventh month. In Vietnam, it is celebrated as Tết Trung Nguyên (中元節) or Lễ Vu Lan (禮盂蘭) and in Korea it is known as 백중 (百中/百種) Baekjong or 망혼일 (亡魂日) Manghongil (Deceased Spirit Day) or 중원 (中元) Jungwon. The Mid-Autumn Festival is celebrated on the fifteenth day of the eighth month. In Vietnam, it is celebrated as Tết Trung Thu (節中秋) and in Korea it is known as 추석 (秋夕) Chuseok. The Xia Yuan Festival is celebrated on the fifteenth day of the tenth month. In Vietnam, it is celebrated as Tết Hạ Nguyên (節下元). The Laba Festival is on the eighth day of the twelfth month. It is the enlightenment day of Sakyamuni Buddha and is celebrated in Korea as 성도재일 (seongdojaeil) and in Vietnam is known as Lễ Vía Phật Thích Ca Thành Đạo. The Kitchen God Festival is celebrated on the twenty-third day of the twelfth month in northern regions of China and on the twenty-fourth day of the twelfth month in southern regions of China. Chinese New Year's Eve is also known as the Chuxi Festival and is celebrated on the evening of the last day of the lunar calendar. It is celebrated wherever the lunar calendar is observed. The Qingming Festival (清明节) is celebrated on the fifteenth day after the Spring Equinox. It is celebrated in Vietnam as Tết Thanh Minh (節清明). The Dongzhi Festival (冬至) or the Winter Solstice is celebrated as Lễ hội Đông Chí (禮會冬至) in Vietnam and as 동지 (冬至) in Korea. East Asian Mahayana, Daoist, and some Cao Dai holidays and/or vegetarian observances are based on the Lunar Calendar. Many of the above holidays of the lunar calendar are also celebrated in Japan, but since the Meiji era on the similarly numbered dates of the Gregorian calendar. In the case when there is a corresponding intercalary month, the holidays may be celebrated twice. For example, in the hypothetical situation in which there is an additional intercalary seventh month, the Zhong Yuan Festival will be celebrated in the seventh month followed by another celebration in the intercalary seventh month. Like Chinese characters, variants of the Chinese calendar have been used in different parts of the Sinosphere throughout history. Calendars of ethnic groups in mountains and plateaus of southwestern China and grasslands of northern China are based on their phenology and algorithms of traditional calendars of different periods, particularly the Tang and pre-Qin dynasties. Korea, Vietnam, and the Ryukyu Islands adopted the Chinese calendar. In the respective regions, the Chinese calendar has been adapted into the Korean, Vietnamese, and Ryukyuan calendars, with the main difference from the Chinese calendar being the use of different meridians due to geography, leading to some astronomical events — and calendar events based on them — falling on different dates. The traditional Japanese calendar was also derived from the Chinese calendar (based on a Japanese meridian), but Japan abolished its official use in 1873 after Meiji Restoration reforms. Calendars in Mongolia and Tibet have absorbed elements of the traditional Chinese calendar but are not direct descendants of it.	[ { "paragraph_id": 0, "text": "There are various types and subtypes of the Chinese calendar and horology, which over a millennium plus history has produced many variations. The topic of the Chinese calendar includes various traditional types of the Chinese calendar, of which particularly prominent are, identifying years, months, and days according to astronomical phenomena and calculations, with generally an especial effort to correlate the solar and lunar cycles experienced on earth—but which are known to mathematically require some degree of approximation. Typical features of early calendars include the use of the sexagenary cycle-based ganzhi system's repeating cycles of Heavenly Stems and Earthly Branches. The logic of the various permutations of the Chinese calendar has been based in considerations such as the technical from mathematics and astronomy, the philosophical considerations, and the political, and the resulting disparities between different calendars is significant and notable. Various similar calendar systems are also known from various regions or ethnic groups of Central Asia, South Asia, and other areas. Indeed, the Chinese calendar has influenced and been influenced by most parts of the world these days. One particularly popular feature is the Chinese zodiac. The Chinese calendar and horology includes multifaceted methods of computing years, eras, months, days and hours (with modern horology even splitting the seconds).", "title": "" }, { "paragraph_id": 1, "text": "Epochs are one of the important features of calendar systems. An epoch is a particular point in time at which a calendar system may use as its initial time reference, allowing for the consecutive numbering of years from a chosen starting year, date, or time: this is known as an epoch, in the Chinese calendar system, examples include the inauguration of Huangdi or the birth of Confucius. Also, many dynasties had their own dating systems, which could include regnal eras based on the inauguration of a dynasty, the enthronement of a particular monarch, or eras arbitrarily designated due to political or other considerations, such as a desire for a change the luck. Era names are useful for determining dates on artifacts such as ceramics, which were often traditionally dated by an era name during the production process.", "title": "" }, { "paragraph_id": 2, "text": "Variations of the lunisolar calendar are a particularly prominent feature of the Chinese calendar system. The topic of the Chinese calendar includes various traditional types of the Chinese calendar, of which particularly prominent are, identifying years, months, and days according to astronomical phenomena and calculations, with generally an especial effort to correlate the solar and lunar cycles experienced on earth—but which are known to mathematically require some degree of approximation. One of the major features of some traditional calendrical systems in China (and elsewhere) was the idea of the sexagenary cycle. The Chinese lunisolar calendar has had several significant variations over the course of time and history, and despite the name also considers various other astronomical phenomena besides the cycles of the sun and the moon, such as the planets and the constellations (or mansions) of asterisms along the ecliptic. Many Chinese holidays ancient and modern have been determined by a lunisolar calendar or considerations of the lunisolar calendar, now generally combined with more modern calendar considerations.", "title": "" }, { "paragraph_id": 3, "text": "Solar and agricultural calendars have a long history in China. Purely lunar calendar systems were known in China, however they tended to be of limited utility, and were not widely accepted by farmers who for agricultural purposes needed to focus on predictability of seasons for planting and harvesting purposes and to thereby produce a useful agricultural calendar. For farming purposes and keeping track of the seasons Chinese solar calendars were particularly useful. The publication of multipurpose and agricultural almanacs has been a longstanding tradition in China.", "title": "" }, { "paragraph_id": 4, "text": "The horology of the Chinese calendar also includes variations of the modern Chinese calendar, influenced by the Gregorian calendar. Variations include methodologies of the People's Republic of China and Taiwan.", "title": "" }, { "paragraph_id": 5, "text": "An epoch is a point in time chosen as the origin of a particular calendar era, thus serving as a reference point from which subsequent time or dates are measured. The use of epochs in Chinese calendar system allow for a chronological starting point from whence to begin point continuously numbering subsequent dates. Various epochs have been used. Similarly, nomenclature similar to that of the Christian era has occasionally been used:", "title": "Epochs" }, { "paragraph_id": 6, "text": "No reference date is universally accepted. The most popular is the Gregorian calendar (公曆; 公历; gōnglì; 'common calendar').", "title": "Epochs" }, { "paragraph_id": 7, "text": "During the 17th century, the Jesuits tried to determine the epochal year of the Han calendar. In his Sinicae historiae decas prima (published in Munich in 1658), Martino Martini (1614–1661) dated the Yellow Emperor's ascension at 2697 BCE and began the Chinese calendar with the reign of Fuxi (which, according to Martini, began in 2952 BCE). Philippe Couplet's 1686 Chronological table of Chinese monarchs (Tabula chronologica monarchiae sinicae) gave the same date for the Yellow Emperor. The Jesuits' dates provoked interest in Europe, where they were used for comparison with Biblical chronology. Modern Chinese chronology has generally accepted Martini's dates, except that it usually places the reign of the Yellow Emperor at 2698 BCE and omits his predecessors Fuxi and Shennong as \"too legendary to include\".", "title": "Epochs" }, { "paragraph_id": 8, "text": "Publications began using the estimated birth date of the Yellow Emperor as the first year of the Han calendar in 1903, with newspapers and magazines proposing different dates. Jiangsu province counted 1905 as the year 4396 (using a year 1 of 2491 BCE, and implying that 2023 CE is 4514), and the newspaper Ming Pao (明報) reckoned 1905 as 4603 (using a year 1 of 2698 BCE, and implying that 2023 CE is 4721). Liu Shipei (劉師培, 1884–1919) created the Yellow Emperor Calendar (黃帝紀元, 黃帝曆 or 軒轅紀年), with year 1 as the birth of the emperor (which he determined as 2711 BCE, implying that 2023 CE is 4734). There is no evidence that this calendar was used before the 20th century. Liu calculated that the 1900 international expedition sent by the Eight-Nation Alliance to suppress the Boxer Rebellion entered Beijing in the 4611th year of the Yellow Emperor.", "title": "Epochs" }, { "paragraph_id": 9, "text": "Taoists later adopted Yellow Emperor Calendar and named it Tao Calendar (道曆).", "title": "Epochs" }, { "paragraph_id": 10, "text": "On 2 January 1912, Sun Yat-sen announced changes to the official calendar and era. 1 January was 14 Shíyīyuè 4609 Huángdì year, assuming a year 1 of 2698 BCE, making 2023 CE year 4721. Many overseas Chinese communities like San Francisco's Chinatown adopted the change.", "title": "Epochs" }, { "paragraph_id": 11, "text": "The modern Chinese standard calendar uses the epoch of the Gregorian calendar, which is on January 1st of the year 1 CE.", "title": "Epochs" }, { "paragraph_id": 12, "text": "Lunisolar calendars involve correlations of the cycles of the sun (solar) and the moon (lunar).", "title": "Lunisolar" }, { "paragraph_id": 13, "text": "A solar calendar keeps track of the seasons as the earth and the sun move in the solar system relatively to each other. A purely solar calendar may be useful in planning times for agricultural activities such as planting and harvesting. Solar calendars tend to use astronomically observable points of reference such as equinoxes and solstices, events which may be approximately predicted using fundamental methods of observation and basic mathematical analysis.", "title": "Solar and agricultural" }, { "paragraph_id": 14, "text": "The topic of the Chinese calendar also includes variations of the modern Chinese calendar, influenced by the Gregorian calendar. Variations include methodologies of the People's Republic of China and Taiwan.", "title": "Modern Chinese calendar and horology" }, { "paragraph_id": 15, "text": "In China, the modern calendar is defined by the Chinese national standard GB/T 33661–2017, \"Calculation and Promulgation of the Chinese Calendar\", issued by the Standardization Administration of China on May 12, 2017.", "title": "Modern Chinese calendar and horology" }, { "paragraph_id": 16, "text": "Although modern-day China uses the Gregorian calendar, the traditional Chinese calendar governs holidays, such as the Chinese New Year and Lantern Festival, in both China and overseas Chinese communities. It also provides the traditional Chinese nomenclature of dates within a year which people use to select auspicious days for weddings, funerals, moving or starting a business. The evening state-run news program Xinwen Lianbo in the People's Republic of China continues to announce the months and dates in both the Gregorian and the traditional lunisolar calendar.", "title": "Modern Chinese calendar and horology" }, { "paragraph_id": 17, "text": "The Chinese calendar system has a long history, which has traditionally been associated with specific dynastic periods. Various individual calendar types have been developed with different names.", "title": "History" }, { "paragraph_id": 18, "text": "There are various Chinese terms for calendar variations including:", "title": "History" }, { "paragraph_id": 19, "text": "Nongli Calendar (traditional Chinese: 農曆; simplified Chinese: 农历; pinyin: nónglì; lit. 'agricultural calendar')", "title": "History" }, { "paragraph_id": 20, "text": "Jiuli Calendar (traditional Chinese: 舊曆; simplified Chinese: 旧历; pinyin: jiùlì; Jyutping: Gau6 Lik6; lit.'former calendar')", "title": "History" }, { "paragraph_id": 21, "text": "Laoli Calendar (traditional Chinese: 老曆; simplified Chinese: 老历; pinyin: lǎolì; lit. 'old calendar')", "title": "History" }, { "paragraph_id": 22, "text": "Zhongli Calendar (traditional Chinese: 中曆; simplified Chinese: 中历; pinyin: zhōnglì; Jyutping: zung1 lik6; lit. 'Chinese calendar')", "title": "History" }, { "paragraph_id": 23, "text": "Huali Calendar (traditional Chinese: 華曆; simplified Chinese: 华历; pinyin: huálì; Jyutping: waa4 lik6; lit. 'Chinese calendar')", "title": "History" }, { "paragraph_id": 24, "text": "The traditional Chinese calendar was developed between 771 and 476 BCE, during the Spring and Autumn period of the Eastern Zhou dynasty. Solar calendars were used before the Zhou dynasty period, along with the basic sexagenary system.", "title": "History" }, { "paragraph_id": 25, "text": "One version of the solar calendar is the five-elements calendar (五行曆; 五行历), which derives from the Wu Xing. A 365-day year was divided into five phases of 73 days, with each phase corresponding to a Day 1 Wu Xing element. A phase began with a governing-element day (行御), followed by six 12-day weeks. Each phase consisted of two three-week months, making each year ten months long. Years began on a jiǎzǐ (甲子) day (and a 72-day wood phase), followed by a bǐngzǐ day (丙子) and a 72-day fire phase; a wùzǐ (戊子) day and a 72-day earth phase; a gēngzǐ (庚子) day and a 72-day metal phase, and a rénzǐ day (壬子) followed by a water phase. Other days were tracked using the Yellow River Map (He Tu).", "title": "History" }, { "paragraph_id": 26, "text": "Another version is a four-quarters calendar (四時八節曆; 四时八节历; 'four sections', 'eight seasons calendar', or 四分曆; 四分历). The weeks were ten days long, with one month consisting of three weeks. A year had 12 months, with a ten-day week intercalated in summer as needed to keep up with the tropical year. The 10 Heavenly Stems and 12 Earthly Branches were used to mark days.", "title": "History" }, { "paragraph_id": 27, "text": "A third version is the balanced calendar (調曆; 调历). A year was 365.25 days, and a month was 29.5 days. After every 16th month, a half-month was intercalated. According to oracle bone records, the Shang dynasty calendar (c. 1600 – c. 1046 BCE) was a balanced calendar with 12 to 14 months in a year; the month after the winter solstice was Zhēngyuè.", "title": "History" }, { "paragraph_id": 28, "text": "Modern historical knowledge and records are limited for the earlier calendars. These calendars are known as the six ancient calendars (古六曆; 古六历), or quarter-remainder calendars, (四分曆; 四分历; sìfēnlì), since all calculate a year as 365+1⁄4 days long. Months begin on the day of the new moon, and a year has 12 or 13 months. Intercalary months (a 13th month) are added to the end of the year. The Qiang and Dai calendars are modern versions of the Zhuanxu calendar, used by mountain peoples.", "title": "History" }, { "paragraph_id": 29, "text": "The first lunisolar calendar was the Zhou calendar (周曆; 周历), introduced under the Zhou dynasty (1046 BC – 256 BCE). This calendar sets the beginning of the year at the day of the new moon before the winter solstice.", "title": "History" }, { "paragraph_id": 30, "text": "Several competing lunisolar calendars were also introduced as Zhou devolved into the Warring States, especially by states fighting Zhou control during the Warring States period (perhaps 475-221 BCE). The state of Lu issued its own Lu calendar(魯曆; 鲁历). Jin issued the Xia calendar (夏曆; 夏历) with a year beginning on the day of the new moon nearest the March equinox. Qin issued the Zhuanxu calendar (顓頊曆; 颛顼历), with a year beginning on the day of the new moon nearest the winter solstice. Song's Yin calendar (殷曆; 殷历) began its year on the day of the new moon after the winter solstice.", "title": "History" }, { "paragraph_id": 31, "text": "After Qin Shi Huang unified China under the Qin dynasty in 221 BCE, the Qin calendar (秦曆; 秦历) was introduced. It followed most of the rules governing the Zhuanxu calendar, but the month order was that of the Xia calendar; the year began with month 10 and ended with month 9, analogous to a Gregorian calendar beginning in October and ending in September. The intercalary month, known as the second Jiǔyuè (後九月; 后九月; 'later Jiǔyuè'), was placed at the end of the year. The Qin calendar was used going into the Han dynasty.", "title": "History" }, { "paragraph_id": 32, "text": "Emperor Wu of Han r. 141 – 87 BCE introduced reforms in the seventh of the eleven named eras of his reign, Tàichū (Chinese: 太初; pinyin: Tàichū; lit. 'Grand Beginning'), 104 BC – 101 BCE. His Tàichū Calendar (太初曆; 太初历; 'grand beginning calendar') defined a solar year as 365+385⁄1539 days, and the lunar month had 29+43⁄81 days. Since ( 365 + 385 1539 ) × 19 = ( 29 + 43 81 ) × ( 19 × 12 + 7 ) {\\displaystyle \\left(365+{\\frac {385}{1539}}\\right)\\times 19=\\left(29+{\\frac {43}{81}}\\right)\\times \\left(19\\times 12+7\\right)} the 19 years cycle used for the 7 additional months was taken as an exact one, and not as an approximation.", "title": "History" }, { "paragraph_id": 33, "text": "This calendar introduced the 24 solar terms, dividing the year into 24 equal parts. Solar terms were paired, with the 12 combined periods known as climate terms. The first solar term of the period was known as a pre-climate (节气), and the second was a mid-climate (中气). Months were named for the mid-climate to which they were closest, and a month without a mid-climate was an intercalary month.", "title": "History" }, { "paragraph_id": 34, "text": "The Taichu calendar established a framework for traditional calendars, with later calendars adding to the basic formula.", "title": "History" }, { "paragraph_id": 35, "text": "The Dàmíng Calendar (大明曆; 大明历; 'brightest calendar'), created in the Northern and Southern Dynasties by Zu Chongzhi (429–500 AD), introduced the equinoxes.", "title": "History" }, { "paragraph_id": 36, "text": "The use of syzygy to determine the lunar month was first described in the Tang dynasty Wùyín Yuán Calendar (戊寅元曆; 戊寅元历; 'earth tiger epoch calendar').", "title": "History" }, { "paragraph_id": 37, "text": "The Yuan dynasty Shòushí calendar (授時曆; 授时历; 'season granting calendar') used spherical trigonometry to find the length of the tropical year. The calendar had a 365.2425-day year, identical to the Gregorian calendar.", "title": "History" }, { "paragraph_id": 38, "text": "Although the Chinese calendar lost its place as the country's official calendar at the beginning of the 20th century, its use has continued. The Republic of China Calendar published by the Beiyang government of the Republic of China still listed the dates of the Chinese calendar in addition to the Gregorian calendar. In 1929, the Nationalist government tried to ban the traditional Chinese calendar. The Kuómín Calendar published by the government no longer listed the dates of the Chinese calendar. However, Chinese people were used to the traditional calendar and many traditional customs were based on the Chinese calendar. The ban failed and was lifted in 1934. The latest Chinese calendar was \"New Edition of Wànniánlì, revised edition\", edited by Beijing Purple Mountain Observatory, People's Republic of China.", "title": "History" }, { "paragraph_id": 39, "text": "From 1645 to 1913 the Shíxiàn or Chongzhen was developed. During the late Ming dynasty, the Chinese Emperor appointed Xu Guangqi in 1629 to be the leader of the ShiXian calendar reform. Assisted by Jesuits, he translated Western astronomical works and introduced new concepts, such as those of Nicolaus Copernicus, Johannes Kepler, Galileo Galilei, and Tycho Brahe; however, the new calendar was not released before the end of the dynasty. In the early Qing dynasty, Johann Adam Schall von Bell submitted the calendar which was edited by the lead of Xu Guangqi to the Shunzhi Emperor. The Qing government issued it as the Shíxiàn (seasonal) calendar. In this calendar, the solar terms are 15° each along the ecliptic and it can be used as a solar calendar. However, the length of the climate term near the perihelion is less than 30 days and there may be two mid-climate terms. The Shíxiàn calendar changed the mid-climate-term rule to \"decide the month in sequence, except the intercalary month.\" The present traditional calendar follows the Shíxiàn calendar, except:", "title": "History" }, { "paragraph_id": 40, "text": "To optimize the Chinese calendar, astronomers have proposed a number of changes. Gao Pingzi (高平子; 1888–1970), a Chinese astronomer who co-founded the Purple Mountain Observatory, proposed that month numbers be calculated before the new moon and solar terms to be rounded to the day. Since the intercalary month is determined by the first month without a mid-climate and the mid-climate time varies by time zone, countries that adopted the calendar but calculate with their own time could vary from the time in China.", "title": "History" }, { "paragraph_id": 41, "text": "Days begin and end at midnight, and months begin on the day of the new moon. Years start on the second (or third) new moon after the winter solstice. Solar terms govern the beginning, middle, and end of each month. A sexagenary cycle, comprising the heavenly stems (Chinese: 干; pinyin: gān) and the earthly branches (Chinese: 支; pinyin: zhī), is used as identification alongside each year and month, including intercalary months or leap months. Months are also annotated as either long (Chinese: 大; lit. 'big' for months with 30 days) or short (Chinese: 小; lit. 'small' for months with 29 days).", "title": "Horology" }, { "paragraph_id": 42, "text": "The traditional Chinese calendar's elements are:", "title": "Horology" }, { "paragraph_id": 43, "text": "The Chinese calendar is lunisolar, similar to the Hindu, Hebrew and ancient Babylonian calendars.", "title": "Horology" }, { "paragraph_id": 44, "text": "The movements of the Sun, Moon, Mercury, Venus, Mars, Jupiter and Saturn (known as the seven luminaries) are the references for calendar calculations.", "title": "Horology" }, { "paragraph_id": 45, "text": "The Big Dipper is the celestial compass, and its handle's direction indicates or some said determines the season and month.", "title": "Horology" }, { "paragraph_id": 46, "text": "The stars are divided into Three Enclosures and 28 Mansions according to their location in the sky relative to Ursa Minor, at the center. Each mansion is named with a character describing the shape of its principal asterism. The Three Enclosures are Purple Forbidden, (紫微), Supreme Palace (太微), and Heavenly Market. (天市) The eastern mansions are 角, 亢, 氐, 房, 心, 尾, 箕. Southern mansions are 井, 鬼, 柳, 星, 張, 翼, 轸. Western mansions are 奎, 婁, 胃, 昴, 畢, 參, 觜. Northern mansions are 斗, 牛, 女, 虛, 危, 室, 壁. The moon moves through about one lunar mansion per day, so the 28 mansions were also used to count days. In the Tang dynasty, Yuan Tiangang (袁天罡) matched the 28 mansions, seven luminaries and yearly animal signs to yield combinations such as \"horn-wood-flood dragon\" (角木蛟).", "title": "Horology" }, { "paragraph_id": 47, "text": "", "title": "Horology" }, { "paragraph_id": 48, "text": "The names and determinative stars of the mansions are:", "title": "List of lunar mansions" }, { "paragraph_id": 49, "text": "Several coding systems are used to avoid ambiguity. The Heavenly Stems is a decimal system. The Earthly Branches, a duodecimal system, mark dual hours (時; 时; shí or 時辰; 时辰; shíchen) and climatic terms. The 12 characters progress from the first day with the same branch as the month (first Yín day (寅日) of Zhēngyuè; first Mǎo day (卯日) of Èryuè), and count the days of the month.", "title": "List of lunar mansions" }, { "paragraph_id": 50, "text": "The stem-branches is a sexagesimal system. The Heavenly Stems and Earthly Branches make up 60 stem-branches. The stem branches mark days and years. The five Wu Xing elements are assigned to each stem, branch, or stem branch.", "title": "List of lunar mansions" }, { "paragraph_id": 51, "text": "China has used the Western hour-minute-second system to divide the day since the Qing dynasty. Several era-dependent systems had been in use; systems using multiples of twelve and ten were popular, since they could be easily counted and aligned with the Heavenly Stems and Earthly Branches.", "title": "Twelve branches" }, { "paragraph_id": 52, "text": "As early as the Bronze Age Xia dynasty, days were grouped into nine- or ten-day weeks known as xún (旬). Months consisted of three xún. The first 10 days were the early xún (上旬), the middle 10 the mid xún (中旬), and the last nine (or 10) days were the late xún (下旬). Japan adopted this pattern, with 10-day-weeks known as jun (旬). In Korea, they were known as sun (순,旬).", "title": "Twelve branches" }, { "paragraph_id": 53, "text": "The structure of xún led to public holidays every five or ten days. Officials of the Han dynasty were legally required to rest every five days (twice a xún, or 5–6 times a month). The name of these breaks became huan (澣; 浣, \"wash\").", "title": "Twelve branches" }, { "paragraph_id": 54, "text": "Grouping days into sets of ten is still used today in referring to specific natural events. \"Three Fu\" (三伏), a 29–30-day period which is the hottest of the year, reflects its three-xún length. After the winter solstice, nine sets of nine days were counted to calculate the end of winter.", "title": "Twelve branches" }, { "paragraph_id": 55, "text": "The seven-day week was adopted from the Hellenistic system by the 4th century AD, although its method of transmission into China is unclear. It was again transmitted to China in the 8th century by Manichaeans via Kangju (a Central Asian kingdom near Samarkand), and is the most-used system in modern China.", "title": "Twelve branches" }, { "paragraph_id": 56, "text": "Months are defined by the time between new moons, which averages approximately 29+17⁄32 days. There is no specified length of any particular Chinese month, so the first month could have 29 days (short month, 小月) in some years and 30 days (long month, 大月) in other years.", "title": "Twelve branches" }, { "paragraph_id": 57, "text": "A 12-month-year using this system has 354 days, which would drift significantly from the tropical year. To fix this, traditional Chinese years have a 13-month year approximately once every three years. The 13-month version has the same long and short months alternating, but adds a 30-day leap month (閏月; rùnyuè). Years with 12 months are called common years, and 13-month years are known as long years.", "title": "Twelve branches" }, { "paragraph_id": 58, "text": "Although most of the above rules were used until the Tang dynasty, different eras used different systems to keep lunar and solar years aligned. The synodic month of the Taichu calendar was 29+43⁄81 days long. The 7th-century, Tang-dynasty Wùyín Yuán Calendar was the first to determine month length by synodic month instead of the cycling method. Since then, month lengths have primarily been determined by observation and prediction.", "title": "Twelve branches" }, { "paragraph_id": 59, "text": "The days of the month are always written with two characters and numbered beginning with 1. Days one to 10 are written with the day's numeral, preceded by the character Chū (初); Chūyī (初一) is the first day of the month, and Chūshí (初十) the 10th. Days 11 to 20 are written as regular Chinese numerals; Shíwǔ (十五) is the 15th day of the month, and Èrshí (二十) the 20th. Days 21 to 29 are written with the character Niàn (廿) before the characters one through nine; Niànsān (廿三), for example, is the 23rd day of the month. Day 30 (when applicable) is written as the numeral Sānshí (三十).", "title": "Twelve branches" }, { "paragraph_id": 60, "text": "History books use days of the month numbered with the 60 stem-branches:", "title": "Twelve branches" }, { "paragraph_id": 61, "text": "天聖元年…二月…丁巳，奉安太祖、太宗御容于南京鴻慶宮. Tiānshèng 1st year…Èryuè…Dīngsì, the emperor's funeral was at his temple, and the imperial portrait was installed in Nanjing's Hongqing Palace.", "title": "Twelve branches" }, { "paragraph_id": 62, "text": "Because astronomical observation determines month length, dates on the calendar correspond to moon phases. The first day of each month is the new moon. On the seventh or eighth day of each month, the first-quarter moon is visible in the afternoon and early evening. On the 15th or 16th day of each month, the full moon is visible all night. On the 22nd or 23rd day of each month, the last-quarter moon is visible late at night and in the morning.", "title": "Twelve branches" }, { "paragraph_id": 63, "text": "Since the beginning of the month is determined by when the new moon occurs, other countries using this calendar use their own time standards to calculate it; this results in deviations. The first new moon in 1968 was at 16:29 UTC on 29 January. Since North Vietnam used UTC+07:00 to calculate their Vietnamese calendar and South Vietnam used UTC+08:00 (Beijing time) to calculate theirs, North Vietnam began the Tết holiday at 29 January at 23:29 while South Vietnam began it on 30 January at 00:15. The time difference allowed asynchronous attacks in the Tet Offensive.", "title": "Twelve branches" }, { "paragraph_id": 64, "text": "Lunar months were originally named according to natural phenomena. Current naming conventions use numbers as the month names. Every month is also associated with one of the twelve Earthly Branches.", "title": "Twelve branches" }, { "paragraph_id": 65, "text": "Though the numbered month names are often used for the corresponding month number in the Gregorian calendar, it is important to realize that the numbered month names are not interchangeable with the Gregorian months when talking about lunar dates.", "title": "Twelve branches" }, { "paragraph_id": 66, "text": "One may identify the heavenly stem and earthly branch corresponding to a particular day in the month, and those corresponding to its month, and those to its year, to determine the Four Pillars of Destiny associated with it, for which the Tung Shing, also referred to as the Chinese Almanac of the year, or the Huangli, and containing the essential information concerning Chinese astrology, is the most convenient publication to consult. Days rotate through a sexagenary cycle marked by coordination between heavenly stems and earthly branches, hence the referral to the Four Pillars of Destiny as, \"Bazi\", or \"Birth Time Eight Characters\", with each pillar consisting of a character for its corresponding heavenly stem, and another for its earthly branch. Since Huangli days are sexagenaric, their order is quite independent of their numeric order in each month, and of their numeric order within a week (referred to as True Animals in relation to the Chinese zodiac). Therefore, it does require painstaking calculation for one to arrive at the Four Pillars of Destiny of a particular given date, which rarely outpaces the convenience of simply consulting the Huangli by looking up its Gregorian date.", "title": "Twelve branches" }, { "paragraph_id": 67, "text": "The solar year (歲; 岁; Suì), the time between winter solstices, is divided into 24 solar terms known as jié qì (節氣). Each term is a 15° portion of the ecliptic. These solar terms mark both Western and Chinese seasons, as well as equinoxes, solstices, and other Chinese events. The even solar terms (marked with \"Z\", for Chinese: 中氣, Zhongqi) are considered the major terms, while the odd solar terms (marked with \"J\", for Chinese: 節氣, Jieqi) are deemed minor. The solar terms qīng míng (清明) on 5 April and dōng zhì (冬至) on 22 December are both celebrated events in China.", "title": "Twelve branches" }, { "paragraph_id": 68, "text": "The calendar solar year, known as the suì, (歲; 岁) begins on the December solstice and proceeds through the 24 solar terms. Since the speed of the Sun's apparent motion in the elliptical is variable, the time between major solar terms is not fixed. This variation in time between major solar terms results in different solar year lengths. There are generally 11 or 12 complete months, plus two incomplete months around the winter solstice, in a solar year. The complete months are numbered from 0 to 10, and the incomplete months are considered the 11th month. If there are 12 complete months in the solar year, it is known as a leap solar year, or leap suì.", "title": "Twelve branches" }, { "paragraph_id": 69, "text": "Due to the inconsistencies in the length of the solar year, different versions of the traditional calendar might have different average solar year lengths. For example, one solar year of the 1st century BCE Tàichū calendar is 365+385⁄1539 (365.25016) days. A solar year of the 13th-century Shòushí calendar is 365+97⁄400 (365.2425) days, identical to the Gregorian calendar. The additional .00766 day from the Tàichū calendar leads to a one-day shift every 130.5 years.", "title": "Twelve branches" }, { "paragraph_id": 70, "text": "Pairs of solar terms are climate terms, or solar months. The first solar term is \"pre-climate\" (節氣; 节气; Jiéqì), and the second is \"mid-climate\" (中氣; 中气; Zhōngqì).", "title": "Twelve branches" }, { "paragraph_id": 71, "text": "If there are 12 complete months within a solar year, the first month without a mid-climate is the leap, or intercalary, month. In other words, the first month that does not include a major solar term is the leap month. Leap months are numbered with rùn 閏, the character for \"intercalary\", plus the name of the month they follow. In 2017, the intercalary month after month six was called Rùn Liùyuè, or \"intercalary sixth month\" (閏六月) and written as 6i or 6+. The next intercalary month (in 2020, after month four) will be called Rùn Sìyuè (閏四月) and written 4i or 4+.", "title": "Twelve branches" }, { "paragraph_id": 72, "text": "The lunisolar year begins with the first spring month, Zhēngyuè (正月; 'capital month'), and ends with the last winter month, Làyuè (臘月; 腊月; 'sacrificial month'). All other months are named for their number in the month order. See below on the timing of the Chinese New Year.", "title": "Twelve branches" }, { "paragraph_id": 73, "text": "Years were traditionally numbered by the reign in ancient China, but this was abolished after founding the People's Republic of China in 1949. For example, the year from 12 February 2021 to 31 January 2022 was a Xīnchǒu year (辛丑年) of 12 months or 354 days.", "title": "Twelve branches" }, { "paragraph_id": 74, "text": "The Tang dynasty used the Earthly Branches to mark the months from December 761 to May 762. Over this period, the year began with the winter solstice.", "title": "Twelve branches" }, { "paragraph_id": 75, "text": "In China, a person's official age is based on the Gregorian calendar. For traditional use, age is based on the Chinese Sui calendar. A child is considered one year old a hundred days after birth (9 months gestation plus 3 months). After each Chinese New Year, one year is added to their traditional age. Their age therefore is the number of Chinese years which have passed. Due to the potential for confusion, the age of infants is often given in months instead of years.", "title": "Twelve branches" }, { "paragraph_id": 76, "text": "After the Gregorian calendar was introduced in China, the Chinese traditional-age was referred to as the \"nominal age\" (虛歲; 虚岁; xūsuì; 'incomplete age') and the Gregorian age was known as the \"real age\" (實歲; 实岁; shísùi; 'whole age').", "title": "Twelve branches" }, { "paragraph_id": 77, "text": "Ancient China numbered years from an emperor's ascension to the throne or his declaration of a new era name. The first recorded reign title was Jiànyuán (建元), from 140 BCE; the last reign title was Xuāntǒng (宣統; 宣统), from 1908 CE. The era system was abolished in 1912, after which the current or Republican era was used.", "title": "Twelve branches" }, { "paragraph_id": 78, "text": "The 60 stem-branches have been used to mark the date since the Shang dynasty (1600–1046 BC). Astrologers knew that the orbital period of Jupiter is about 12×361 = 4332 days, which they divided period into 12 years (歲; 岁; suì) of 361 days each. The stem-branches system solved the era system's problem of unequal reign lengths.", "title": "Twelve branches" }, { "paragraph_id": 79, "text": "The date of the Chinese New Year accords with the patterns of the lunisolar calendar and hence is variable from year to year.", "title": "Twelve branches" }, { "paragraph_id": 80, "text": "The invariant between years is that the winter solstice, Dongzhi is required to be in the eleventh month of the year. This means that Chinese New Year will be on the second new moon after the previous winter solstice, unless there is a leap month 11 or 12 in the previous year.", "title": "Twelve branches" }, { "paragraph_id": 81, "text": "This rule is accurate, however there are two other mostly (but not completely) accurate rules that are commonly stated:", "title": "Twelve branches" }, { "paragraph_id": 82, "text": "It has been found that Chinese New Year moves back by either 10, 11, or 12 days in most years. If it falls on or before 31 January, then it moves forward in the next year by either 18, 19, or 20 days.", "title": "Twelve branches" }, { "paragraph_id": 83, "text": "Phenology is the study of periodic events in biological life cycles and how these are influenced by seasonal and interannual variations in climate, as well as habitat factors (such as elevation). The plum-rains season (梅雨), the rainy season in late spring and early summer, begins on the first bǐng day after Mangzhong (芒種) and ends on the first wèi day after Xiaoshu (小暑). The Three Fu (三伏; sānfú) are three periods of hot weather, counted from the first gēng day after the summer solstice. The first fu (初伏; chūfú) is 10 days long. The mid-fu (中伏; zhōngfú) is 10 or 20 days long. The last fu (末伏; mòfú) is 10 days from the first gēng day after the beginning of autumn. The Shujiu cold days (數九; shǔjǐu; 'counting to nine') are the 81 days after the winter solstice (divided into nine sets of nine days), and are considered the coldest days of the year. Each nine-day unit is known by its order in the set, followed by \"nine\" (九). In traditional Chinese culture, \"nine\" represents the infinity, which is also the number of \"Yang\". People believe that the nine times accumulation of \"Yang\" gradually reduces the \"Yin\", and finally the weather becomes warm.", "title": "Twelve branches" }, { "paragraph_id": 84, "text": "Various traditional and religious holidays shared by communities throughout the world use the Chinese (Lunisolar) calendar:", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 85, "text": "The Chinese New Year (known as the Spring Festival/春節 in China) is on the first day of the first month and was traditionally called the Yuan Dan (元旦) or Zheng Ri (正日). In Vietnam, it is known as Tết Nguyên Đán (節元旦) and in Korea, it is known as 설날. Traditionally it was the most important holiday of the year. It is an official holiday in China, Hong Kong, Macau, Taiwan, Vietnam, Korea, the Philippines, Malaysia, Singapore, Indonesia, and Mauritius. It is also a public holiday in Thailand's Narathiwat, Pattani, Yala, and Satun provinces and is an official public school holiday in New York City.", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 86, "text": "The Double Third Festival is on the third day of the third month and in Korea is known as 삼짇날 (samjinnal).", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 87, "text": "The Dragon Boat Festival, or the Duanwu Festival (端午節), is on the fifth day of the fifth month and is an official holiday in China, Hong Kong, Macau, and Taiwan. It is also celebrated in Vietnam where it is known as Tết Đoan Ngọ (節端午) and in Korea where it is known as 단오 (端午) (Dano) or 수릿날 (戌衣日/水瀨日) (surinal) (both Hanja are used as they are homonyms).", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 88, "text": "The Qixi Festival (七夕節) is celebrated in the evening of the seventh day of the seventh month. It is also celebrated in Vietnam where it is known as Thất tịch (七夕) and in Korea where is known as 칠석 (七夕) (chilseok).", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 89, "text": "The Double Ninth Festival (重陽節) is celebrated on the ninth day of the ninth month. It is also celebrated in Vietnam where it is known as Tết Trùng Cửu (節重九) and in Korea where it is known as 중양절 (jungyangjeol).", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 90, "text": "The Lantern Festival is celebrated on the fifteenth day of the first month and was traditionally called the Yuan Xiao (元宵) or Shang Yuan Festival (上元節). In Vietnam, it is known as Tết Thượng Nguyên (節上元) and in Korea, it is known as 대보름 (大보름) Daeboreum (or the Great Full Month).", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 91, "text": "The Zhong Yuan Festival is celebrated on the fifteenth day of the seventh month. In Vietnam, it is celebrated as Tết Trung Nguyên (中元節) or Lễ Vu Lan (禮盂蘭) and in Korea it is known as 백중 (百中/百種) Baekjong or 망혼일 (亡魂日) Manghongil (Deceased Spirit Day) or 중원 (中元) Jungwon.", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 92, "text": "The Mid-Autumn Festival is celebrated on the fifteenth day of the eighth month. In Vietnam, it is celebrated as Tết Trung Thu (節中秋) and in Korea it is known as 추석 (秋夕) Chuseok.", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 93, "text": "The Xia Yuan Festival is celebrated on the fifteenth day of the tenth month. In Vietnam, it is celebrated as Tết Hạ Nguyên (節下元).", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 94, "text": "The Laba Festival is on the eighth day of the twelfth month. It is the enlightenment day of Sakyamuni Buddha and is celebrated in Korea as 성도재일 (seongdojaeil) and in Vietnam is known as Lễ Vía Phật Thích Ca Thành Đạo.", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 95, "text": "The Kitchen God Festival is celebrated on the twenty-third day of the twelfth month in northern regions of China and on the twenty-fourth day of the twelfth month in southern regions of China.", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 96, "text": "Chinese New Year's Eve is also known as the Chuxi Festival and is celebrated on the evening of the last day of the lunar calendar. It is celebrated wherever the lunar calendar is observed.", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 97, "text": "The Qingming Festival (清明节) is celebrated on the fifteenth day after the Spring Equinox. It is celebrated in Vietnam as Tết Thanh Minh (節清明).", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 98, "text": "The Dongzhi Festival (冬至) or the Winter Solstice is celebrated as Lễ hội Đông Chí (禮會冬至) in Vietnam and as 동지 (冬至) in Korea.", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 99, "text": "East Asian Mahayana, Daoist, and some Cao Dai holidays and/or vegetarian observances are based on the Lunar Calendar.", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 100, "text": "Many of the above holidays of the lunar calendar are also celebrated in Japan, but since the Meiji era on the similarly numbered dates of the Gregorian calendar.", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 101, "text": "In the case when there is a corresponding intercalary month, the holidays may be celebrated twice. For example, in the hypothetical situation in which there is an additional intercalary seventh month, the Zhong Yuan Festival will be celebrated in the seventh month followed by another celebration in the intercalary seventh month.", "title": "Common holidays based on the Chinese (lunisolar) calendar" }, { "paragraph_id": 102, "text": "Like Chinese characters, variants of the Chinese calendar have been used in different parts of the Sinosphere throughout history.", "title": "Similar calendars" }, { "paragraph_id": 103, "text": "Calendars of ethnic groups in mountains and plateaus of southwestern China and grasslands of northern China are based on their phenology and algorithms of traditional calendars of different periods, particularly the Tang and pre-Qin dynasties.", "title": "Similar calendars" }, { "paragraph_id": 104, "text": "Korea, Vietnam, and the Ryukyu Islands adopted the Chinese calendar. In the respective regions, the Chinese calendar has been adapted into the Korean, Vietnamese, and Ryukyuan calendars, with the main difference from the Chinese calendar being the use of different meridians due to geography, leading to some astronomical events — and calendar events based on them — falling on different dates. The traditional Japanese calendar was also derived from the Chinese calendar (based on a Japanese meridian), but Japan abolished its official use in 1873 after Meiji Restoration reforms. Calendars in Mongolia and Tibet have absorbed elements of the traditional Chinese calendar but are not direct descendants of it.", "title": "Similar calendars" } ]	There are various types and subtypes of the Chinese calendar and horology, which over a millennium plus history has produced many variations. The topic of the Chinese calendar includes various traditional types of the Chinese calendar, of which particularly prominent are, identifying years, months, and days according to astronomical phenomena and calculations, with generally an especial effort to correlate the solar and lunar cycles experienced on earth—but which are known to mathematically require some degree of approximation. Typical features of early calendars include the use of the sexagenary cycle-based ganzhi system's repeating cycles of Heavenly Stems and Earthly Branches. The logic of the various permutations of the Chinese calendar has been based in considerations such as the technical from mathematics and astronomy, the philosophical considerations, and the political, and the resulting disparities between different calendars is significant and notable. Various similar calendar systems are also known from various regions or ethnic groups of Central Asia, South Asia, and other areas. Indeed, the Chinese calendar has influenced and been influenced by most parts of the world these days. One particularly popular feature is the Chinese zodiac. The Chinese calendar and horology includes multifaceted methods of computing years, eras, months, days and hours. Epochs are one of the important features of calendar systems. An epoch is a particular point in time at which a calendar system may use as its initial time reference, allowing for the consecutive numbering of years from a chosen starting year, date, or time: this is known as an epoch, in the Chinese calendar system, examples include the inauguration of Huangdi or the birth of Confucius. Also, many dynasties had their own dating systems, which could include regnal eras based on the inauguration of a dynasty, the enthronement of a particular monarch, or eras arbitrarily designated due to political or other considerations, such as a desire for a change the luck. Era names are useful for determining dates on artifacts such as ceramics, which were often traditionally dated by an era name during the production process. Variations of the lunisolar calendar are a particularly prominent feature of the Chinese calendar system. The topic of the Chinese calendar includes various traditional types of the Chinese calendar, of which particularly prominent are, identifying years, months, and days according to astronomical phenomena and calculations, with generally an especial effort to correlate the solar and lunar cycles experienced on earth—but which are known to mathematically require some degree of approximation. One of the major features of some traditional calendrical systems in China was the idea of the sexagenary cycle. The Chinese lunisolar calendar has had several significant variations over the course of time and history, and despite the name also considers various other astronomical phenomena besides the cycles of the sun and the moon, such as the planets and the constellations of asterisms along the ecliptic. Many Chinese holidays ancient and modern have been determined by a lunisolar calendar or considerations of the lunisolar calendar, now generally combined with more modern calendar considerations. Solar and agricultural calendars have a long history in China. Purely lunar calendar systems were known in China, however they tended to be of limited utility, and were not widely accepted by farmers who for agricultural purposes needed to focus on predictability of seasons for planting and harvesting purposes and to thereby produce a useful agricultural calendar. For farming purposes and keeping track of the seasons Chinese solar calendars were particularly useful. The publication of multipurpose and agricultural almanacs has been a longstanding tradition in China. The horology of the Chinese calendar also includes variations of the modern Chinese calendar, influenced by the Gregorian calendar. Variations include methodologies of the People's Republic of China and Taiwan.	2001-11-02T23:21:46Z	2023-12-31T21:56:38Z	[ "Template:East Asian topics", "Template:Split", "Template:Zh", "Template:Cite web", "Template:Chinese New Year", "Template:About", "Template:Frac", "Template:Lang-ko", "Template:Efn", "Template:Cite wikisource", "Template:Infobox Chinese", "Template:Sfnb", "Template:Reflist", "Template:Cite journal", "Template:Portal", "Template:S&T in China", "Template:Main", "Template:Circa", "Template:Nihongo", "Template:Blockquote", "Template:Reign", "Template:Notelist", "Template:Short description", "Template:Multiple issues", "Template:Quote without source", "Template:Lang", "Template:Clear", "Template:Calendars", "Template:Rp", "Template:Cite book", "Template:Authority control", "Template:Distinguish", "Template:Citation needed", "Template:Further", "Template:For", "Template:Use dmy dates", "Template:History of science and technology in China", "Template:See also" ]	https://en.wikipedia.org/wiki/Chinese_calendar
6,968	Customer relationship management	Customer relationship management (CRM) is a process in which a business or other organization administers its interactions with customers, typically using data analysis to study large amounts of information. CRM systems compile data from a range of different communication channels, including a company's website, telephone (which many softwares come with a softphone), email, live chat, marketing materials and more recently, social media. They allow businesses to learn more about their target audiences and how to better cater to their needs, thus retaining customers and driving sales growth. CRM may be used with past, present or potential customers. The concepts, procedures, and rules that a corporation follows when communicating with its consumers are referred to as CRM. This complete connection covers direct contact with customers, such as sales and service-related operations, forecasting, and the analysis of consumer patterns and behaviors, from the perspective of the company. According to Gartner, the global CRM market size is estimated at $69 billion in 2020. The concept of customer relationship management started in the early 1970s, when customer satisfaction was evaluated using annual surveys or by front-line asking. At that time, businesses had to rely on standalone mainframe systems to automate sales, but the extent of technology allowed them to categorize customers in spreadsheets and lists. One of the best-known precursors of modern-day CRM is the Farley File. Developed by Franklin Roosevelt's campaign manager, James Farley, the Farley File was a comprehensive set of records detailing political and personal facts about people FDR and Farley met or were supposed to meet. Using it, people that FDR met were impressed by his "recall" of facts about their family and what they were doing professionally and politically. In 1982, Kate and Robert D. Kestenbaum introduced the concept of database marketing, namely applying statistical methods to analyze and gather customer data. By 1986, Pat Sullivan and Mike Muhney had released a customer evaluation system called ACT! based on the principle of a digital Rolodex, which offered a contact management service for the first time. The trend was followed by numerous companies and independent developers trying to maximize lead potential, including Tom Siebel of Siebel Systems, who designed the first CRM product, Siebel Customer Relationship Management, in 1993. In order to compete with these new and quickly growing stand-alone CRM solutions, established enterprise resource planning (ERP) software companies like Oracle, Zoho Corporation, SAP, Peoplesoft (an Oracle subsidiary as of 2005) and Navision started extending their sales, distribution and customer service capabilities with embedded CRM modules. This included embedding sales force automation or extended customer service (e.g. inquiry, activity management) as CRM features in their ERP. Customer relationship management was popularized in 1997, due to the work of Siebel, Gartner, and IBM. Between 1997 and 2000, leading CRM products were enriched with shipping and marketing capabilities. Siebel introduced the first mobile CRM app called Siebel Sales Handheld in 1999. The idea of a stand-alone, cloud-hosted customer base was soon adopted by other leading providers at the time, including PeopleSoft (acquired by Oracle), Oracle, SAP and Salesforce.com. The first open-source CRM system was developed by SugarCRM in 2004. During this period, CRM was rapidly migrating to the cloud, as a result of which it became accessible to sole entrepreneurs and small teams. This increase in accessibility generated a huge wave of price reduction. Around 2009, developers began considering the options to profit from social media's momentum and designed tools to help companies become accessible on all users' favourite networks. Many startups at the time benefited from this trend to provide exclusively social CRM solutions, including Base and Nutshell. The same year, Gartner organized and held the first Customer Relationship Management Summit, and summarized the features systems should offer to be classified as CRM solutions. In 2013 and 2014, most of the popular CRM products were linked to business intelligence systems and communication software to improve corporate communication and end-users' experience. The leading trend is to replace standardized CRM solutions with industry-specific ones, or to make them customizable enough to meet the needs of every business. In November 2016, Forrester released a report where it "identified the nine most significant CRM suites from eight prominent vendors". Strategic CRM concentrates upon the development of a customer-centric business culture. The focus of a business on being customer-centric (in design and implementation of their CRM strategy) will translate into an improved CLV. The primary goal of CRM systems is integration and automation of sales, marketing, and customer support. Therefore, these systems typically have a dashboard that gives an overall view of the three functions on a single customer view, a single page for each customer that a company may have. The dashboard may provide client information, past sales, previous marketing efforts, and more, summarizing all of the relationships between the customer and the firm. Operational CRM is made up of 3 main components: sales force automation, marketing automation, and service automation. The role of analytical CRM systems is to analyze customer data collected through multiple sources and present it so that business managers can make more informed decisions. Analytical CRM systems use techniques such as data mining, correlation, and pattern recognition to analyze customer data. These analytics help improve customer service by finding small problems which can be solved, perhaps by marketing to different parts of a consumer audience differently. For example, through the analysis of a customer base's buying behavior, a company might see that this customer base has not been buying a lot of products recently. After scanning through this data, the company might think to market to this subset of consumers differently, to best communicate how this company's products might benefit this group specifically. The third primary aim of CRM systems is to incorporate external stakeholders such as suppliers, vendors, and distributors, and share customer information across groups/departments and organizations. For example, feedback can be collected from technical support calls, which could help provide direction for marketing products and services to that particular customer in the future. A customer data platform (CDP) is a computer system used by marketing departments that assembles data about individual people from various sources into one database, with which other software systems can interact. As of February 2017 there were about twenty companies selling such systems and revenue for them was around US$300 million. The main components of CRM are building and managing customer relationships through marketing, observing relationships as they mature through distinct phases, managing these relationships at each stage and recognizing that the distribution of the value of a relationship to the firm is not homogeneous. When building and managing customer relationships through marketing, firms might benefit from using a variety of tools to help organizational design, incentive schemes, customer structures, and more to optimize the reach of their marketing campaigns. Through the acknowledgment of the distinct phases of CRM, businesses will be able to benefit from seeing the interaction of multiple relationships as connected transactions. The final factor of CRM highlights the importance of CRM through accounting for the profitability of customer relationships. Through studying the particular spending habits of customers, a firm may be able to dedicate different resources and amounts of attention to different types of consumers. Relational Intelligence, which is the awareness of the variety of relationships a customer can have with a firm and the ability of the firm to reinforce or change those connections, is an important component to the main phases of CRM. Companies may be good at capturing demographic data, such as gender, age, income, and education, and connecting them with purchasing information to categorize customers into profitability tiers, but this is only a firm's industrial view of customer relationships. A lack in relational intelligence is a sign that firms still see customers as resources that can be used for up-sell or cross-sell opportunities, rather than people looking for interesting and personalized interactions. CRM systems include: Customer satisfaction has important implications for the economic performance of firms because it has the ability to increase customer loyalty and usage behavior and reduce customer complaints and the likelihood of customer defection. The implementation of a CRM approach is likely to affect customer satisfaction and customer knowledge for a variety of different reasons. Firstly, firms can customize their offerings for each customer. By accumulating information across customer interactions and processing this information to discover hidden patterns, CRM applications help firms customize their offerings to suit the individual tastes of their customers. This customization enhances the perceived quality of products and services from a customer's viewpoint, and because the perceived quality is a determinant of customer satisfaction, it follows that CRM applications indirectly affect customer satisfaction. CRM applications also enable firms to provide timely, accurate processing of customer orders and requests and the ongoing management of customer accounts. For example, Piccoli and Applegate discuss how Wyndham uses IT tools to deliver a consistent service experience across its various properties to a customer. Both an improved ability to customize and reduced variability of the consumption experience enhance perceived quality, which in turn positively affects customer satisfaction. Furthermore, CRM applications also help firms manage customer relationships more effectively across the stages of relationship initiation, maintenance, and termination. With Customer relationship management systems, customers are served better on the day-to-day process. With more reliable information, their demand for self-service from companies will decrease. If there is less need to interact with the company for different problems, customer satisfaction level increases. These central benefits of CRM will be connected hypothetically to the three kinds of equity that are relationship, value, and brand, and in the end to customer equity. Eight benefits were recognized to provide value drivers. In 2012, after reviewing the previous studies, someone selected some of those benefits which are more significant in customer satisfaction and summarized them into the following cases: Research has found a 5% increase in customer retention boosts lifetime customer profits by 50% on average across multiple industries, as well as a boost of up to 90% within specific industries such as insurance. Companies that have mastered customer relationship strategies have the most successful CRM programs. For example, MBNA Europe has had a 75% annual profit growth since 1995. The firm heavily invests in screening potential cardholders. Once proper clients are identified, the firm retains 97% of its profitable customers. They implement CRM by marketing the right products to the right customers. The firm's customers' card usage is 52% above the industry norm, and the average expenditure is 30% more per transaction. Also 10% of their account holders ask for more information on cross-sale products. Amazon has also seen great success through its customer proposition. The firm implemented personal greetings, collaborative filtering, and more for the customer. They also used CRM training for the employees to see up to 80% of customers repeat. A customer profile is a detailed description of any particular classification of customer which is created to represent the typical users of a product or service. Customer profiling is a method to understand your customers in terms of demographics, behaviour and lifestyle. It is used to help make customer-focused decisions without confusing the scope of the project with personal opinion. Overall profiling is gathering information that sums up consumption habits so far and projects them into the future so that they can be grouped for marketing and advertising purposes. Customer or consumer profiles are the essences of the data that is collected alongside core data (name, address, company) and processed through customer analytics methods, essentially a type of profiling. The three basic methods of customer profiling are the psychographic approach, the consumer typology approach, and the consumer characteristics approach. These customer profiling methods help you design your business around who your customers are and help you make better customer-centered decisions. Consultants argue that it is important for companies to establish strong CRM systems to improve their relational intelligence. According to this argument, a company must recognize that people have many different types of relationships with different brands. One research study analyzed relationships between consumers in China, Germany, Spain, and the United States, with over 200 brands in 11 industries including airlines, cars, and media. This information is valuable as it provides demographic, behavioral, and value-based customer segmentation. These types of relationships can be both positive and negative. Some customers view themselves as friends of the brands, while others as enemies, and some are mixed with a love-hate relationship with the brand. Some relationships are distant, intimate, or anything in between. Managers must understand the different reasons for the types of relationships, and provide the customer with what they are looking for. Companies can collect this information by using surveys, interviews, and more, with current customers. Companies must also improve the relational intelligence of their CRM systems. These days, companies store and receive huge amounts of data through emails, online chat sessions, phone calls, and more. Many companies do not properly make use of this great amount of data, however. All of these are signs of what types of relationships the customer wants with the firm, and therefore companies may consider investing more time and effort in building out their relational intelligence. Companies can use data mining technologies and web searches to understand relational signals. Social media such as social networking sites, blogs, and forums can also be used to collect and analyze information. Understanding the customer and capturing this data allows companies to convert customers' signals into information and knowledge that the firm can use to understand a potential customer's desired relations with a brand. Many firms have also implemented training programs to teach employees how to recognize and effectively create strong customer-brand relationships. Other employees have also been trained in social psychology and the social sciences to help bolster strong customer relationships. Customer service representatives must be educated to value customer relationships and trained to understand existing customer profiles. Even the finance and legal departments should understand how to manage and build relationships with customers. Contact centre CRM providers are popular for small and mid-market businesses. These systems codify the interactions between the company and customers by using analytics and key performance indicators to give the users information on where to focus their marketing and customer service. This allows agents to have access to a caller's history to provide personalized customer communication. The intention is to maximize average revenue per user, decrease churn rate and decrease idle and unproductive contact with the customers. Growing in popularity is the idea of gamifying, or using game design elements and game principles in a non-game environment such as customer service environments. The gamification of customer service environments includes providing elements found in games like rewards and bonus points to customer service representatives as a method of feedback for a job well done. Gamification tools can motivate agents by tapping into their desire for rewards, recognition, achievements, and competition. Contact-center automation, CCA, the practice of having an integrated system that coordinates contacts between an organization and the public, is designed to reduce the repetitive and tedious parts of a contact center agent's job. Automation prevents this by having pre-recorded audio messages that help customers solve their problems. For example, an automated contact center may be able to re-route a customer through a series of commands asking him or her to select a certain number to speak with a particular contact center agent who specializes in the field in which the customer has a question. Software tools can also integrate with the agent's desktop tools to handle customer questions and requests. This also saves time on behalf of the employees. Social CRM involves the use of social media and technology to engage and learn from consumers. Because the public, especially young people, are increasingly using social networking sites, companies use these sites to draw attention to their products, services and brands, with the aim of building up customer relationships to increase demand. With the increase in the use of social media platforms, integrating CRM with the help of social media can potentially be a quicker and more cost-friendly process. Some CRM systems integrate social media sites like Twitter, LinkedIn, and Facebook to track and communicate with customers. These customers also share their own opinions and experiences with a company's products and services, giving these firms more insight. Therefore, these firms can both share their own opinions and also track the opinions of their customers. Enterprise feedback management software platforms combine internal survey data with trends identified through social media to allow businesses to make more accurate decisions on which products to supply. CRM systems can also include technologies that create geographic marketing campaigns. The systems take in information based on a customer's physical location and sometimes integrates it with popular location-based GPS applications. It can be used for networking or contact management as well to help increase sales based on location. Despite the general notion that CRM systems were created for customer-centric businesses, they can also be applied to B2B environments to streamline and improve customer management conditions. For the best level of CRM operation in a B2B environment, the software must be personalized and delivered at individual levels. The main differences between business-to-consumer (B2C) and business-to-business CRM systems concern aspects like sizing of contact databases and length of relationships. In the Gartner CRM Summit 2010 challenges like "system tries to capture data from social networking traffic like Twitter, handles Facebook page addresses or other online social networking sites" were discussed and solutions were provided that would help in bringing more clientele. The era of the "social customer" refers to the use of social media by customers. Some CRM systems are equipped with mobile capabilities, making information accessible to remote sales staff. Many CRM vendors offer subscription-based web tools (cloud computing) and SaaS. Salesforce.com was the first company to provide enterprise applications through a web browser, and has maintained its leadership position. Traditional providers moved into the cloud-based market via acquisitions of smaller providers: Oracle purchased RightNow in October 2011, and Taleo and Eloqua in 2012; SAP acquired SuccessFactors in December 2011 and NetSuite acquired Verenia in 2022. Sales forces also play an important role in CRM, as maximizing sales effectiveness and increasing sales productivity is a driving force behind the adoption of CRM software. Some of the top CRM trends identified in 2021 include focusing on customer service automation such as chatbots, hyper-personalization based on customer data and insights, and the use of unified CRM systems. CRM vendors support sales productivity with different products, such as tools that measure the effectiveness of ads that appear in 3D video games. Pharmaceutical companies were some of the first investors in sales force automation (SFA) and some are on their third- or fourth-generation implementations. However, until recently, the deployments did not extend beyond SFA—limiting their scope and interest to Gartner analysts. Another related development is vendor relationship management (VRM), which provide tools and services that allow customers to manage their individual relationship with vendors. VRM development has grown out of efforts by ProjectVRM at Harvard's Berkman Center for Internet & Society and Identity Commons' Internet Identity Workshops, as well as by a growing number of startups and established companies. VRM was the subject of a cover story in the May 2010 issue of CRM Magazine. Another trend worth noting is the rise of Customer Success as a discipline within companies. More and more companies establish Customer Success teams as separate from the traditional Sales team and task them with managing existing customer relations. This trend fuels demand for additional capabilities for a more holistic understanding of customer health, which is a limitation for many existing vendors in the space. As a result, a growing number of new entrants enter the market while existing vendors add capabilities in this area to their suites. In 2017, artificial intelligence and predictive analytics were identified as the newest trends in CRM. Companies face large challenges when trying to implement CRM systems. Consumer companies frequently manage their customer relationships haphazardly and unprofitably. They may not effectively or adequately use their connections with their customers, due to misunderstandings or misinterpretations of a CRM system's analysis. Clients may be treated like an exchange party, rather than a unique individual, due to, occasionally, a lack of a bridge between the CRM data and the CRM analysis output. Many studies show that customers are frequently frustrated by a company's inability to meet their relationship expectations, and on the other side, companies do not always know how to translate the data they have gained from CRM software into a feasible action plan. In 2003, a Gartner report estimated that more than $2 billion had been spent on software that was not being used. According to CSO Insights, less than 40 percent of 1,275 participating companies had end-user adoption rates above 90 percent. Many corporations only use CRM systems on a partial or fragmented basis. In a 2007 survey from the UK, four-fifths of senior executives reported that their biggest challenge is getting their staff to use the systems they had installed. Forty-three percent of respondents said they use less than half the functionality of their existing systems. However, market research regarding consumers' preferences may increase the adoption of CRM among developing countries' consumers. Collection of customer data such as personally identifiable information must strictly obey customer privacy laws, which often requires extra expenditures on legal support. Part of the paradox with CRM stems from the challenge of determining exactly what CRM is and what it can do for a company. The CRM paradox, also referred to as the "dark side of CRM", may entail favoritism and differential treatment of some customers. This can happen because a business prioritizes customers who are more profitable, more relationship-orientated or tend to have increased loyalty to the company. Although focusing on such customers by itself isn't a bad thing, it can leave other customers feeling left out and alienated potentially decreasing profits because of it. CRM technologies can easily become ineffective if there is no proper management, and they are not implemented correctly. The data sets must also be connected, distributed, and organized properly so that the users can access the information that they need quickly and easily. Research studies also show that customers are increasingly becoming dissatisfied with contact center experiences due to lags and wait times. They also request and demand multiple channels of communication with a company, and these channels must transfer information seamlessly. Therefore, it is increasingly important for companies to deliver a cross-channel customer experience that can be both consistent as well as reliable.	[ { "paragraph_id": 0, "text": "Customer relationship management (CRM) is a process in which a business or other organization administers its interactions with customers, typically using data analysis to study large amounts of information.", "title": "" }, { "paragraph_id": 1, "text": "CRM systems compile data from a range of different communication channels, including a company's website, telephone (which many softwares come with a softphone), email, live chat, marketing materials and more recently, social media. They allow businesses to learn more about their target audiences and how to better cater to their needs, thus retaining customers and driving sales growth. CRM may be used with past, present or potential customers. The concepts, procedures, and rules that a corporation follows when communicating with its consumers are referred to as CRM. This complete connection covers direct contact with customers, such as sales and service-related operations, forecasting, and the analysis of consumer patterns and behaviors, from the perspective of the company. According to Gartner, the global CRM market size is estimated at $69 billion in 2020.", "title": "" }, { "paragraph_id": 2, "text": "The concept of customer relationship management started in the early 1970s, when customer satisfaction was evaluated using annual surveys or by front-line asking. At that time, businesses had to rely on standalone mainframe systems to automate sales, but the extent of technology allowed them to categorize customers in spreadsheets and lists. One of the best-known precursors of modern-day CRM is the Farley File. Developed by Franklin Roosevelt's campaign manager, James Farley, the Farley File was a comprehensive set of records detailing political and personal facts about people FDR and Farley met or were supposed to meet. Using it, people that FDR met were impressed by his \"recall\" of facts about their family and what they were doing professionally and politically. In 1982, Kate and Robert D. Kestenbaum introduced the concept of database marketing, namely applying statistical methods to analyze and gather customer data. By 1986, Pat Sullivan and Mike Muhney had released a customer evaluation system called ACT! based on the principle of a digital Rolodex, which offered a contact management service for the first time.", "title": "History" }, { "paragraph_id": 3, "text": "The trend was followed by numerous companies and independent developers trying to maximize lead potential, including Tom Siebel of Siebel Systems, who designed the first CRM product, Siebel Customer Relationship Management, in 1993. In order to compete with these new and quickly growing stand-alone CRM solutions, established enterprise resource planning (ERP) software companies like Oracle, Zoho Corporation, SAP, Peoplesoft (an Oracle subsidiary as of 2005) and Navision started extending their sales, distribution and customer service capabilities with embedded CRM modules. This included embedding sales force automation or extended customer service (e.g. inquiry, activity management) as CRM features in their ERP.", "title": "History" }, { "paragraph_id": 4, "text": "Customer relationship management was popularized in 1997, due to the work of Siebel, Gartner, and IBM. Between 1997 and 2000, leading CRM products were enriched with shipping and marketing capabilities. Siebel introduced the first mobile CRM app called Siebel Sales Handheld in 1999. The idea of a stand-alone, cloud-hosted customer base was soon adopted by other leading providers at the time, including PeopleSoft (acquired by Oracle), Oracle, SAP and Salesforce.com.", "title": "History" }, { "paragraph_id": 5, "text": "The first open-source CRM system was developed by SugarCRM in 2004. During this period, CRM was rapidly migrating to the cloud, as a result of which it became accessible to sole entrepreneurs and small teams. This increase in accessibility generated a huge wave of price reduction. Around 2009, developers began considering the options to profit from social media's momentum and designed tools to help companies become accessible on all users' favourite networks. Many startups at the time benefited from this trend to provide exclusively social CRM solutions, including Base and Nutshell. The same year, Gartner organized and held the first Customer Relationship Management Summit, and summarized the features systems should offer to be classified as CRM solutions. In 2013 and 2014, most of the popular CRM products were linked to business intelligence systems and communication software to improve corporate communication and end-users' experience. The leading trend is to replace standardized CRM solutions with industry-specific ones, or to make them customizable enough to meet the needs of every business. In November 2016, Forrester released a report where it \"identified the nine most significant CRM suites from eight prominent vendors\".", "title": "History" }, { "paragraph_id": 6, "text": "Strategic CRM concentrates upon the development of a customer-centric business culture.", "title": "Types" }, { "paragraph_id": 7, "text": "The focus of a business on being customer-centric (in design and implementation of their CRM strategy) will translate into an improved CLV.", "title": "Types" }, { "paragraph_id": 8, "text": "The primary goal of CRM systems is integration and automation of sales, marketing, and customer support. Therefore, these systems typically have a dashboard that gives an overall view of the three functions on a single customer view, a single page for each customer that a company may have. The dashboard may provide client information, past sales, previous marketing efforts, and more, summarizing all of the relationships between the customer and the firm. Operational CRM is made up of 3 main components: sales force automation, marketing automation, and service automation.", "title": "Types" }, { "paragraph_id": 9, "text": "The role of analytical CRM systems is to analyze customer data collected through multiple sources and present it so that business managers can make more informed decisions. Analytical CRM systems use techniques such as data mining, correlation, and pattern recognition to analyze customer data. These analytics help improve customer service by finding small problems which can be solved, perhaps by marketing to different parts of a consumer audience differently. For example, through the analysis of a customer base's buying behavior, a company might see that this customer base has not been buying a lot of products recently. After scanning through this data, the company might think to market to this subset of consumers differently, to best communicate how this company's products might benefit this group specifically.", "title": "Types" }, { "paragraph_id": 10, "text": "The third primary aim of CRM systems is to incorporate external stakeholders such as suppliers, vendors, and distributors, and share customer information across groups/departments and organizations. For example, feedback can be collected from technical support calls, which could help provide direction for marketing products and services to that particular customer in the future.", "title": "Types" }, { "paragraph_id": 11, "text": "A customer data platform (CDP) is a computer system used by marketing departments that assembles data about individual people from various sources into one database, with which other software systems can interact. As of February 2017 there were about twenty companies selling such systems and revenue for them was around US$300 million.", "title": "Types" }, { "paragraph_id": 12, "text": "The main components of CRM are building and managing customer relationships through marketing, observing relationships as they mature through distinct phases, managing these relationships at each stage and recognizing that the distribution of the value of a relationship to the firm is not homogeneous. When building and managing customer relationships through marketing, firms might benefit from using a variety of tools to help organizational design, incentive schemes, customer structures, and more to optimize the reach of their marketing campaigns. Through the acknowledgment of the distinct phases of CRM, businesses will be able to benefit from seeing the interaction of multiple relationships as connected transactions. The final factor of CRM highlights the importance of CRM through accounting for the profitability of customer relationships. Through studying the particular spending habits of customers, a firm may be able to dedicate different resources and amounts of attention to different types of consumers.", "title": "Components" }, { "paragraph_id": 13, "text": "Relational Intelligence, which is the awareness of the variety of relationships a customer can have with a firm and the ability of the firm to reinforce or change those connections, is an important component to the main phases of CRM. Companies may be good at capturing demographic data, such as gender, age, income, and education, and connecting them with purchasing information to categorize customers into profitability tiers, but this is only a firm's industrial view of customer relationships. A lack in relational intelligence is a sign that firms still see customers as resources that can be used for up-sell or cross-sell opportunities, rather than people looking for interesting and personalized interactions.", "title": "Components" }, { "paragraph_id": 14, "text": "CRM systems include:", "title": "Components" }, { "paragraph_id": 15, "text": "Customer satisfaction has important implications for the economic performance of firms because it has the ability to increase customer loyalty and usage behavior and reduce customer complaints and the likelihood of customer defection. The implementation of a CRM approach is likely to affect customer satisfaction and customer knowledge for a variety of different reasons.", "title": "Effect on customer satisfaction" }, { "paragraph_id": 16, "text": "Firstly, firms can customize their offerings for each customer. By accumulating information across customer interactions and processing this information to discover hidden patterns, CRM applications help firms customize their offerings to suit the individual tastes of their customers. This customization enhances the perceived quality of products and services from a customer's viewpoint, and because the perceived quality is a determinant of customer satisfaction, it follows that CRM applications indirectly affect customer satisfaction. CRM applications also enable firms to provide timely, accurate processing of customer orders and requests and the ongoing management of customer accounts. For example, Piccoli and Applegate discuss how Wyndham uses IT tools to deliver a consistent service experience across its various properties to a customer. Both an improved ability to customize and reduced variability of the consumption experience enhance perceived quality, which in turn positively affects customer satisfaction. Furthermore, CRM applications also help firms manage customer relationships more effectively across the stages of relationship initiation, maintenance, and termination.", "title": "Effect on customer satisfaction" }, { "paragraph_id": 17, "text": "With Customer relationship management systems, customers are served better on the day-to-day process. With more reliable information, their demand for self-service from companies will decrease. If there is less need to interact with the company for different problems, customer satisfaction level increases. These central benefits of CRM will be connected hypothetically to the three kinds of equity that are relationship, value, and brand, and in the end to customer equity. Eight benefits were recognized to provide value drivers.", "title": "Effect on customer satisfaction" }, { "paragraph_id": 18, "text": "In 2012, after reviewing the previous studies, someone selected some of those benefits which are more significant in customer satisfaction and summarized them into the following cases:", "title": "Effect on customer satisfaction" }, { "paragraph_id": 19, "text": "Research has found a 5% increase in customer retention boosts lifetime customer profits by 50% on average across multiple industries, as well as a boost of up to 90% within specific industries such as insurance. Companies that have mastered customer relationship strategies have the most successful CRM programs. For example, MBNA Europe has had a 75% annual profit growth since 1995. The firm heavily invests in screening potential cardholders. Once proper clients are identified, the firm retains 97% of its profitable customers. They implement CRM by marketing the right products to the right customers. The firm's customers' card usage is 52% above the industry norm, and the average expenditure is 30% more per transaction. Also 10% of their account holders ask for more information on cross-sale products.", "title": "Effect on customer satisfaction" }, { "paragraph_id": 20, "text": "Amazon has also seen great success through its customer proposition. The firm implemented personal greetings, collaborative filtering, and more for the customer. They also used CRM training for the employees to see up to 80% of customers repeat.", "title": "Effect on customer satisfaction" }, { "paragraph_id": 21, "text": "A customer profile is a detailed description of any particular classification of customer which is created to represent the typical users of a product or service. Customer profiling is a method to understand your customers in terms of demographics, behaviour and lifestyle. It is used to help make customer-focused decisions without confusing the scope of the project with personal opinion. Overall profiling is gathering information that sums up consumption habits so far and projects them into the future so that they can be grouped for marketing and advertising purposes. Customer or consumer profiles are the essences of the data that is collected alongside core data (name, address, company) and processed through customer analytics methods, essentially a type of profiling. The three basic methods of customer profiling are the psychographic approach, the consumer typology approach, and the consumer characteristics approach. These customer profiling methods help you design your business around who your customers are and help you make better customer-centered decisions.", "title": "Customer profile" }, { "paragraph_id": 22, "text": "Consultants argue that it is important for companies to establish strong CRM systems to improve their relational intelligence. According to this argument, a company must recognize that people have many different types of relationships with different brands. One research study analyzed relationships between consumers in China, Germany, Spain, and the United States, with over 200 brands in 11 industries including airlines, cars, and media. This information is valuable as it provides demographic, behavioral, and value-based customer segmentation. These types of relationships can be both positive and negative. Some customers view themselves as friends of the brands, while others as enemies, and some are mixed with a love-hate relationship with the brand. Some relationships are distant, intimate, or anything in between.", "title": "Improving CRM within a firm" }, { "paragraph_id": 23, "text": "Managers must understand the different reasons for the types of relationships, and provide the customer with what they are looking for. Companies can collect this information by using surveys, interviews, and more, with current customers. Companies must also improve the relational intelligence of their CRM systems. These days, companies store and receive huge amounts of data through emails, online chat sessions, phone calls, and more. Many companies do not properly make use of this great amount of data, however. All of these are signs of what types of relationships the customer wants with the firm, and therefore companies may consider investing more time and effort in building out their relational intelligence. Companies can use data mining technologies and web searches to understand relational signals. Social media such as social networking sites, blogs, and forums can also be used to collect and analyze information. Understanding the customer and capturing this data allows companies to convert customers' signals into information and knowledge that the firm can use to understand a potential customer's desired relations with a brand.", "title": "Improving CRM within a firm" }, { "paragraph_id": 24, "text": "Many firms have also implemented training programs to teach employees how to recognize and effectively create strong customer-brand relationships. Other employees have also been trained in social psychology and the social sciences to help bolster strong customer relationships. Customer service representatives must be educated to value customer relationships and trained to understand existing customer profiles. Even the finance and legal departments should understand how to manage and build relationships with customers.", "title": "Improving CRM within a firm" }, { "paragraph_id": 25, "text": "Contact centre CRM providers are popular for small and mid-market businesses. These systems codify the interactions between the company and customers by using analytics and key performance indicators to give the users information on where to focus their marketing and customer service. This allows agents to have access to a caller's history to provide personalized customer communication. The intention is to maximize average revenue per user, decrease churn rate and decrease idle and unproductive contact with the customers.", "title": "In practice" }, { "paragraph_id": 26, "text": "Growing in popularity is the idea of gamifying, or using game design elements and game principles in a non-game environment such as customer service environments. The gamification of customer service environments includes providing elements found in games like rewards and bonus points to customer service representatives as a method of feedback for a job well done. Gamification tools can motivate agents by tapping into their desire for rewards, recognition, achievements, and competition.", "title": "In practice" }, { "paragraph_id": 27, "text": "Contact-center automation, CCA, the practice of having an integrated system that coordinates contacts between an organization and the public, is designed to reduce the repetitive and tedious parts of a contact center agent's job. Automation prevents this by having pre-recorded audio messages that help customers solve their problems. For example, an automated contact center may be able to re-route a customer through a series of commands asking him or her to select a certain number to speak with a particular contact center agent who specializes in the field in which the customer has a question. Software tools can also integrate with the agent's desktop tools to handle customer questions and requests. This also saves time on behalf of the employees.", "title": "In practice" }, { "paragraph_id": 28, "text": "Social CRM involves the use of social media and technology to engage and learn from consumers. Because the public, especially young people, are increasingly using social networking sites, companies use these sites to draw attention to their products, services and brands, with the aim of building up customer relationships to increase demand. With the increase in the use of social media platforms, integrating CRM with the help of social media can potentially be a quicker and more cost-friendly process.", "title": "In practice" }, { "paragraph_id": 29, "text": "Some CRM systems integrate social media sites like Twitter, LinkedIn, and Facebook to track and communicate with customers. These customers also share their own opinions and experiences with a company's products and services, giving these firms more insight. Therefore, these firms can both share their own opinions and also track the opinions of their customers.", "title": "In practice" }, { "paragraph_id": 30, "text": "Enterprise feedback management software platforms combine internal survey data with trends identified through social media to allow businesses to make more accurate decisions on which products to supply.", "title": "In practice" }, { "paragraph_id": 31, "text": "CRM systems can also include technologies that create geographic marketing campaigns. The systems take in information based on a customer's physical location and sometimes integrates it with popular location-based GPS applications. It can be used for networking or contact management as well to help increase sales based on location.", "title": "In practice" }, { "paragraph_id": 32, "text": "Despite the general notion that CRM systems were created for customer-centric businesses, they can also be applied to B2B environments to streamline and improve customer management conditions. For the best level of CRM operation in a B2B environment, the software must be personalized and delivered at individual levels.", "title": "In practice" }, { "paragraph_id": 33, "text": "The main differences between business-to-consumer (B2C) and business-to-business CRM systems concern aspects like sizing of contact databases and length of relationships.", "title": "In practice" }, { "paragraph_id": 34, "text": "In the Gartner CRM Summit 2010 challenges like \"system tries to capture data from social networking traffic like Twitter, handles Facebook page addresses or other online social networking sites\" were discussed and solutions were provided that would help in bringing more clientele.", "title": "Market trends" }, { "paragraph_id": 35, "text": "The era of the \"social customer\" refers to the use of social media by customers.", "title": "Market trends" }, { "paragraph_id": 36, "text": "Some CRM systems are equipped with mobile capabilities, making information accessible to remote sales staff.", "title": "Market trends" }, { "paragraph_id": 37, "text": "Many CRM vendors offer subscription-based web tools (cloud computing) and SaaS. Salesforce.com was the first company to provide enterprise applications through a web browser, and has maintained its leadership position.", "title": "Market trends" }, { "paragraph_id": 38, "text": "Traditional providers moved into the cloud-based market via acquisitions of smaller providers: Oracle purchased RightNow in October 2011, and Taleo and Eloqua in 2012; SAP acquired SuccessFactors in December 2011 and NetSuite acquired Verenia in 2022.", "title": "Market trends" }, { "paragraph_id": 39, "text": "Sales forces also play an important role in CRM, as maximizing sales effectiveness and increasing sales productivity is a driving force behind the adoption of CRM software. Some of the top CRM trends identified in 2021 include focusing on customer service automation such as chatbots, hyper-personalization based on customer data and insights, and the use of unified CRM systems. CRM vendors support sales productivity with different products, such as tools that measure the effectiveness of ads that appear in 3D video games.", "title": "Market trends" }, { "paragraph_id": 40, "text": "Pharmaceutical companies were some of the first investors in sales force automation (SFA) and some are on their third- or fourth-generation implementations. However, until recently, the deployments did not extend beyond SFA—limiting their scope and interest to Gartner analysts.", "title": "Market trends" }, { "paragraph_id": 41, "text": "Another related development is vendor relationship management (VRM), which provide tools and services that allow customers to manage their individual relationship with vendors. VRM development has grown out of efforts by ProjectVRM at Harvard's Berkman Center for Internet & Society and Identity Commons' Internet Identity Workshops, as well as by a growing number of startups and established companies. VRM was the subject of a cover story in the May 2010 issue of CRM Magazine.", "title": "Market trends" }, { "paragraph_id": 42, "text": "Another trend worth noting is the rise of Customer Success as a discipline within companies. More and more companies establish Customer Success teams as separate from the traditional Sales team and task them with managing existing customer relations. This trend fuels demand for additional capabilities for a more holistic understanding of customer health, which is a limitation for many existing vendors in the space. As a result, a growing number of new entrants enter the market while existing vendors add capabilities in this area to their suites.", "title": "Market trends" }, { "paragraph_id": 43, "text": "In 2017, artificial intelligence and predictive analytics were identified as the newest trends in CRM.", "title": "Market trends" }, { "paragraph_id": 44, "text": "Companies face large challenges when trying to implement CRM systems. Consumer companies frequently manage their customer relationships haphazardly and unprofitably. They may not effectively or adequately use their connections with their customers, due to misunderstandings or misinterpretations of a CRM system's analysis. Clients may be treated like an exchange party, rather than a unique individual, due to, occasionally, a lack of a bridge between the CRM data and the CRM analysis output. Many studies show that customers are frequently frustrated by a company's inability to meet their relationship expectations, and on the other side, companies do not always know how to translate the data they have gained from CRM software into a feasible action plan. In 2003, a Gartner report estimated that more than $2 billion had been spent on software that was not being used. According to CSO Insights, less than 40 percent of 1,275 participating companies had end-user adoption rates above 90 percent. Many corporations only use CRM systems on a partial or fragmented basis. In a 2007 survey from the UK, four-fifths of senior executives reported that their biggest challenge is getting their staff to use the systems they had installed. Forty-three percent of respondents said they use less than half the functionality of their existing systems. However, market research regarding consumers' preferences may increase the adoption of CRM among developing countries' consumers.", "title": "Criticism" }, { "paragraph_id": 45, "text": "Collection of customer data such as personally identifiable information must strictly obey customer privacy laws, which often requires extra expenditures on legal support.", "title": "Criticism" }, { "paragraph_id": 46, "text": "Part of the paradox with CRM stems from the challenge of determining exactly what CRM is and what it can do for a company. The CRM paradox, also referred to as the \"dark side of CRM\", may entail favoritism and differential treatment of some customers. This can happen because a business prioritizes customers who are more profitable, more relationship-orientated or tend to have increased loyalty to the company. Although focusing on such customers by itself isn't a bad thing, it can leave other customers feeling left out and alienated potentially decreasing profits because of it.", "title": "Criticism" }, { "paragraph_id": 47, "text": "CRM technologies can easily become ineffective if there is no proper management, and they are not implemented correctly. The data sets must also be connected, distributed, and organized properly so that the users can access the information that they need quickly and easily. Research studies also show that customers are increasingly becoming dissatisfied with contact center experiences due to lags and wait times. They also request and demand multiple channels of communication with a company, and these channels must transfer information seamlessly. Therefore, it is increasingly important for companies to deliver a cross-channel customer experience that can be both consistent as well as reliable.", "title": "Criticism" } ]	Customer relationship management (CRM) is a process in which a business or other organization administers its interactions with customers, typically using data analysis to study large amounts of information. CRM systems compile data from a range of different communication channels, including a company's website, telephone, email, live chat, marketing materials and more recently, social media. They allow businesses to learn more about their target audiences and how to better cater to their needs, thus retaining customers and driving sales growth. CRM may be used with past, present or potential customers. The concepts, procedures, and rules that a corporation follows when communicating with its consumers are referred to as CRM. This complete connection covers direct contact with customers, such as sales and service-related operations, forecasting, and the analysis of consumer patterns and behaviors, from the perspective of the company. According to Gartner, the global CRM market size is estimated at $69 billion in 2020.	2001-11-01T15:24:36Z	2023-12-20T12:05:43Z	[ "Template:Cite news", "Template:Citation", "Template:Authority control", "Template:Div col", "Template:Portal-inline", "Template:Citation needed", "Template:Div col end", "Template:Reflist", "Template:Webarchive", "Template:Short description", "Template:Use dmy dates", "Template:Management", "Template:Business administration", "Template:Main", "Template:Cite journal", "Template:Cite book", "Template:Cite web", "Template:See", "Template:See also" ]	https://en.wikipedia.org/wiki/Customer_relationship_management
6,970	Chuck-a-luck	Chuck-a-luck, also known as birdcage, or sweat rag, is a game of chance played with three dice. It is derived from grand hazard and both can be considered a variant of sic bo, which is a popular casino game, although chuck-a-luck is more of a carnival game than a true casino game. The game is sometimes used as a fundraiser for charity. Chuck-a-luck is played with three standard dice that are kept in a device shaped somewhat like an hourglass which resembles a wire-frame bird cage and pivots about its centre. The dealer rotates the cage end over end, with the dice landing on the bottom. Wagers are placed based on possible combinations that can appear on the three dice. The possible wagers are usually fewer than the wagers that are possible in sic bo and, in that sense, chuck-a-luck can be considered to be a simpler game. In the simplest variant, betters place stakes on a board labelled 1–6. They receive a 1:1 payout if the number bet on appears once, a 2:1 payout if the number appears twice, and a 3:1 payout if the number is rolled all 3 times. In this respect, the basic game resembles Crown and Anchor, but with numbered dice instead of symbols. Additional wagers that are commonly seen, and their associated odds, are set out in the table below. Chuck-a-luck is a game of chance. On average, the players are expected to lose more than they win. The casino's advantage (house advantage or house edge) is greater than most other casino games and can be much greater. For example, there are 216 (6 × 6 × 6) possible outcomes for a single throw of three dice. For a specific number: At odds of 1 to 1, 2 to 1 and 10 to 1 respectively for each of these types of outcome, the expected loss as a percentage of the stake wagered is: 1 - ((75/216) × 2 + (15/216) × 3 + (1/216) × 11) = 4.6% At worse odds of 1 to 1, 2 to 1 and 3 to 1, the expected loss as a percentage of the stake wagered is: 1 - ((75/216) × 2 + (15/216) × 3 + (1/216) × 4) = 7.9% If the odds are adjusted to 1 to 1, 3 to 1 and 5 to 1 respectively, the expected loss as a percentage is: 1 - ((75/216) × 2 + (15/216) × 4 + (1/216) × 6) = 0% Commercially organised gambling games almost always have a house advantage which acts as a fee for the privilege of being allowed to play the game, so the last scenario would represent a payout system used for a home game, where players take turns being the role of banker/casino. There is a reference to chuck-a-luck in the Abbott and Costello film Hold That Ghost. In Fritz Lang's 1952 film, Rancho Notorious, chuck-a-luck is the name of the ranch run by Altar Keane (played by Marlene Dietrich) where outlaws hide from the law. Chuck-a-luck is featured in the lyrics to the theme song and in some plot points. The game is played by Lazar in the James Bond movie The Man with the Golden Gun. The game is played by Freddie Rumsen in Mad Men Season 2 Episode 9: Six-Month Leave. In Dragonfly in Amber the character Claire Randall describes the activity inside of an inn as having several soldiers playing chuck-a-luck on the floor along with a dog sleeping by the fire and smelling strongly of hops.	[ { "paragraph_id": 0, "text": "Chuck-a-luck, also known as birdcage, or sweat rag, is a game of chance played with three dice. It is derived from grand hazard and both can be considered a variant of sic bo, which is a popular casino game, although chuck-a-luck is more of a carnival game than a true casino game. The game is sometimes used as a fundraiser for charity.", "title": "" }, { "paragraph_id": 1, "text": "Chuck-a-luck is played with three standard dice that are kept in a device shaped somewhat like an hourglass which resembles a wire-frame bird cage and pivots about its centre. The dealer rotates the cage end over end, with the dice landing on the bottom.", "title": "Rules" }, { "paragraph_id": 2, "text": "Wagers are placed based on possible combinations that can appear on the three dice. The possible wagers are usually fewer than the wagers that are possible in sic bo and, in that sense, chuck-a-luck can be considered to be a simpler game. In the simplest variant, betters place stakes on a board labelled 1–6. They receive a 1:1 payout if the number bet on appears once, a 2:1 payout if the number appears twice, and a 3:1 payout if the number is rolled all 3 times. In this respect, the basic game resembles Crown and Anchor, but with numbered dice instead of symbols.", "title": "Rules" }, { "paragraph_id": 3, "text": "Additional wagers that are commonly seen, and their associated odds, are set out in the table below.", "title": "Rules" }, { "paragraph_id": 4, "text": "Chuck-a-luck is a game of chance. On average, the players are expected to lose more than they win. The casino's advantage (house advantage or house edge) is greater than most other casino games and can be much greater.", "title": "House advantage or edge" }, { "paragraph_id": 5, "text": "For example, there are 216 (6 × 6 × 6) possible outcomes for a single throw of three dice. For a specific number:", "title": "House advantage or edge" }, { "paragraph_id": 6, "text": "At odds of 1 to 1, 2 to 1 and 10 to 1 respectively for each of these types of outcome, the expected loss as a percentage of the stake wagered is:", "title": "House advantage or edge" }, { "paragraph_id": 7, "text": "1 - ((75/216) × 2 + (15/216) × 3 + (1/216) × 11) = 4.6%", "title": "House advantage or edge" }, { "paragraph_id": 8, "text": "At worse odds of 1 to 1, 2 to 1 and 3 to 1, the expected loss as a percentage of the stake wagered is:", "title": "House advantage or edge" }, { "paragraph_id": 9, "text": "1 - ((75/216) × 2 + (15/216) × 3 + (1/216) × 4) = 7.9%", "title": "House advantage or edge" }, { "paragraph_id": 10, "text": "If the odds are adjusted to 1 to 1, 3 to 1 and 5 to 1 respectively, the expected loss as a percentage is:", "title": "House advantage or edge" }, { "paragraph_id": 11, "text": "1 - ((75/216) × 2 + (15/216) × 4 + (1/216) × 6) = 0%", "title": "House advantage or edge" }, { "paragraph_id": 12, "text": "Commercially organised gambling games almost always have a house advantage which acts as a fee for the privilege of being allowed to play the game, so the last scenario would represent a payout system used for a home game, where players take turns being the role of banker/casino.", "title": "House advantage or edge" }, { "paragraph_id": 13, "text": "There is a reference to chuck-a-luck in the Abbott and Costello film Hold That Ghost.", "title": "In popular culture" }, { "paragraph_id": 14, "text": "In Fritz Lang's 1952 film, Rancho Notorious, chuck-a-luck is the name of the ranch run by Altar Keane (played by Marlene Dietrich) where outlaws hide from the law. Chuck-a-luck is featured in the lyrics to the theme song and in some plot points.", "title": "In popular culture" }, { "paragraph_id": 15, "text": "The game is played by Lazar in the James Bond movie The Man with the Golden Gun.", "title": "In popular culture" }, { "paragraph_id": 16, "text": "The game is played by Freddie Rumsen in Mad Men Season 2 Episode 9: Six-Month Leave.", "title": "In popular culture" }, { "paragraph_id": 17, "text": "In Dragonfly in Amber the character Claire Randall describes the activity inside of an inn as having several soldiers playing chuck-a-luck on the floor along with a dog sleeping by the fire and smelling strongly of hops.", "title": "In popular culture" } ]	Chuck-a-luck, also known as birdcage, or sweat rag, is a game of chance played with three dice. It is derived from grand hazard and both can be considered a variant of sic bo, which is a popular casino game, although chuck-a-luck is more of a carnival game than a true casino game. The game is sometimes used as a fundraiser for charity.	2001-11-01T22:03:46Z	2023-11-24T23:42:50Z	[ "Template:Prone to spam", "Template:Reflist", "Template:Cite web", "Template:Dice games", "Template:More citations needed" ]	https://en.wikipedia.org/wiki/Chuck-a-luck
6,972	Chipmunk	Chipmunks are small, striped rodents of Sciuridae, the squirrel family; specifically, they are ground squirrels (Marmotini). Chipmunks are found in North America, with the exception of the Siberian chipmunk which is found primarily in Asia. Chipmunks may be classified either as a single genus, Tamias, or as three genera: Tamias, of which the eastern chipmunk (T. striatus) is the only living member; Eutamias, of which the Siberian chipmunk (E. sibiricus) is the only living member; and Neotamias, which includes the 23 remaining, mostly western North American, species. These classifications were treated as subgenera due to the chipmunks' morphological similarities. As a result, most taxonomies over the twentieth century have placed the chipmunks into a single genus. However, studies of mitochondrial DNA show that the divergence between each of the three chipmunk groups is comparable to the genetic differences between Marmota and Spermophilus, so the three genera classifications have been adopted here. The common name originally may have been spelled "chitmunk", from the native Odawa (Ottawa) word jidmoonh, meaning "red squirrel" (cf. Ojibwe ᐊᒋᑕᒨ ajidamoo). The earliest form cited in the Oxford English Dictionary is "chipmonk", from 1842. Other early forms include "chipmuck" and "chipminck", and in the 1830s they were also referred to as "chip squirrels", probably in reference to the sound they make. In the mid-19th century, John James Audubon and his sons included a lithograph of the chipmunk in their Viviparous Quadrupeds of North America, calling it the "chipping squirrel [or] hackee". Chipmunks have also been referred to as "ground squirrels" (although the name "ground squirrel" may refer to other squirrels, such as those of the genus Spermophilus). Chipmunks have an omnivorous diet primarily consisting of seeds, nuts and other fruits, and buds. They also commonly eat grass, shoots, and many other forms of plant matter, as well as fungi, insects and other arthropods, small frogs, worms, and bird eggs. They will also occasionally eat newly hatched baby birds. Around humans, chipmunks can eat cultivated grains and vegetables, and other plants from farms and gardens, so they are sometimes considered pests. Chipmunks mostly forage on the ground, but they climb trees to obtain nuts such as hazelnuts and acorns. At the beginning of autumn, many species of chipmunk begin to stockpile nonperishable foods for winter. They mostly cache their foods in a larder in their burrows and remain in their nests until spring, unlike some other species which make multiple small caches of food. Cheek pouches allow chipmunks to carry food items to their burrows for either storage or consumption. Eastern chipmunks, the largest of the chipmunks, mate in early spring and again in early summer, producing litters of four or five young twice each year. Western chipmunks breed only once a year. The young emerge from the burrow after about six weeks and strike out on their own within the next two weeks. These small mammals fulfill several important functions in forest ecosystems. Their activities harvesting and hoarding tree seeds play a crucial role in seedling establishment. They consume many different kinds of fungi, including those involved in symbiotic mycorrhizal associations with trees, and are an important vector for dispersal of the spores of subterranean sporocarps (truffles) which have co-evolved with these and other mycophagous mammals and thus lost the ability to disperse their spores through the air. Chipmunks construct extensive burrows which can be more than 3.5 m (11 ft) in length with several well-concealed entrances. The sleeping quarters are kept clear of shells, and feces are stored in refuse tunnels. The eastern chipmunk hibernates in the winter, while western chipmunks do not, relying on the stores in their burrows. Chipmunks play an important role as prey for various predatory mammals and birds but are also opportunistic predators themselves, particularly with regard to bird eggs and nestlings, as in the case of eastern chipmunks and mountain bluebirds (Siala currucoides). Chipmunks typically live about three years, although some have been observed living to nine years in captivity. Chipmunks are diurnal. In captivity, they are said to sleep for an average of about 15 hours a day. It is thought that mammals which can sleep in hiding, such as rodents and bats, tend to sleep longer than those that must remain on alert. Genus Eutamias Genus Tamias Genus Neotamias	[ { "paragraph_id": 0, "text": "Chipmunks are small, striped rodents of Sciuridae, the squirrel family; specifically, they are ground squirrels (Marmotini). Chipmunks are found in North America, with the exception of the Siberian chipmunk which is found primarily in Asia.", "title": "" }, { "paragraph_id": 1, "text": "Chipmunks may be classified either as a single genus, Tamias, or as three genera: Tamias, of which the eastern chipmunk (T. striatus) is the only living member; Eutamias, of which the Siberian chipmunk (E. sibiricus) is the only living member; and Neotamias, which includes the 23 remaining, mostly western North American, species. These classifications were treated as subgenera due to the chipmunks' morphological similarities. As a result, most taxonomies over the twentieth century have placed the chipmunks into a single genus. However, studies of mitochondrial DNA show that the divergence between each of the three chipmunk groups is comparable to the genetic differences between Marmota and Spermophilus, so the three genera classifications have been adopted here.", "title": "Taxonomy and systematics" }, { "paragraph_id": 2, "text": "The common name originally may have been spelled \"chitmunk\", from the native Odawa (Ottawa) word jidmoonh, meaning \"red squirrel\" (cf. Ojibwe ᐊᒋᑕᒨ ajidamoo). The earliest form cited in the Oxford English Dictionary is \"chipmonk\", from 1842. Other early forms include \"chipmuck\" and \"chipminck\", and in the 1830s they were also referred to as \"chip squirrels\", probably in reference to the sound they make. In the mid-19th century, John James Audubon and his sons included a lithograph of the chipmunk in their Viviparous Quadrupeds of North America, calling it the \"chipping squirrel [or] hackee\". Chipmunks have also been referred to as \"ground squirrels\" (although the name \"ground squirrel\" may refer to other squirrels, such as those of the genus Spermophilus).", "title": "Taxonomy and systematics" }, { "paragraph_id": 3, "text": "Chipmunks have an omnivorous diet primarily consisting of seeds, nuts and other fruits, and buds. They also commonly eat grass, shoots, and many other forms of plant matter, as well as fungi, insects and other arthropods, small frogs, worms, and bird eggs. They will also occasionally eat newly hatched baby birds. Around humans, chipmunks can eat cultivated grains and vegetables, and other plants from farms and gardens, so they are sometimes considered pests. Chipmunks mostly forage on the ground, but they climb trees to obtain nuts such as hazelnuts and acorns. At the beginning of autumn, many species of chipmunk begin to stockpile nonperishable foods for winter. They mostly cache their foods in a larder in their burrows and remain in their nests until spring, unlike some other species which make multiple small caches of food. Cheek pouches allow chipmunks to carry food items to their burrows for either storage or consumption.", "title": "Diet" }, { "paragraph_id": 4, "text": "Eastern chipmunks, the largest of the chipmunks, mate in early spring and again in early summer, producing litters of four or five young twice each year. Western chipmunks breed only once a year. The young emerge from the burrow after about six weeks and strike out on their own within the next two weeks.", "title": "Ecology and life history" }, { "paragraph_id": 5, "text": "These small mammals fulfill several important functions in forest ecosystems. Their activities harvesting and hoarding tree seeds play a crucial role in seedling establishment. They consume many different kinds of fungi, including those involved in symbiotic mycorrhizal associations with trees, and are an important vector for dispersal of the spores of subterranean sporocarps (truffles) which have co-evolved with these and other mycophagous mammals and thus lost the ability to disperse their spores through the air.", "title": "Ecology and life history" }, { "paragraph_id": 6, "text": "Chipmunks construct extensive burrows which can be more than 3.5 m (11 ft) in length with several well-concealed entrances. The sleeping quarters are kept clear of shells, and feces are stored in refuse tunnels.", "title": "Ecology and life history" }, { "paragraph_id": 7, "text": "The eastern chipmunk hibernates in the winter, while western chipmunks do not, relying on the stores in their burrows.", "title": "Ecology and life history" }, { "paragraph_id": 8, "text": "Chipmunks play an important role as prey for various predatory mammals and birds but are also opportunistic predators themselves, particularly with regard to bird eggs and nestlings, as in the case of eastern chipmunks and mountain bluebirds (Siala currucoides).", "title": "Ecology and life history" }, { "paragraph_id": 9, "text": "Chipmunks typically live about three years, although some have been observed living to nine years in captivity.", "title": "Ecology and life history" }, { "paragraph_id": 10, "text": "Chipmunks are diurnal. In captivity, they are said to sleep for an average of about 15 hours a day. It is thought that mammals which can sleep in hiding, such as rodents and bats, tend to sleep longer than those that must remain on alert.", "title": "Ecology and life history" }, { "paragraph_id": 11, "text": "Genus Eutamias", "title": "Genera" }, { "paragraph_id": 12, "text": "Genus Tamias", "title": "Genera" }, { "paragraph_id": 13, "text": "Genus Neotamias", "title": "Genera" } ]	Chipmunks are small, striped rodents of Sciuridae, the squirrel family; specifically, they are ground squirrels (Marmotini). Chipmunks are found in North America, with the exception of the Siberian chipmunk which is found primarily in Asia.	2002-02-25T15:43:11Z	2023-11-28T06:30:51Z	[ "Template:Commons", "Template:Marmotini nav", "Template:Taxonbar", "Template:Automatic taxobox", "Template:Lang", "Template:Reflist", "Template:Cite journal", "Template:Cite iucn", "Template:Other uses", "Template:Cite web", "Template:Webarchive", "Template:Cite EB1911", "Template:Wikispecies", "Template:Short description", "Template:Pp-semi-indef", "Template:Failed verification", "Template:Convert", "Template:Cite book" ]	https://en.wikipedia.org/wiki/Chipmunk
6,974	Computer music	Computer music is the application of computing technology in music composition, to help human composers create new music or to have computers independently create music, such as with algorithmic composition programs. It includes the theory and application of new and existing computer software technologies and basic aspects of music, such as sound synthesis, digital signal processing, sound design, sonic diffusion, acoustics, electrical engineering, and psychoacoustics. The field of computer music can trace its roots back to the origins of electronic music, and the first experiments and innovations with electronic instruments at the turn of the 20th century. Much of the work on computer music has drawn on the relationship between music and mathematics, a relationship that has been noted since the Ancient Greeks described the "harmony of the spheres". Musical melodies were first generated by the computer originally named the CSIR Mark 1 (later renamed CSIRAC) in Australia in 1950. There were newspaper reports from America and England (early and recently) that computers may have played music earlier, but thorough research has debunked these stories as there is no evidence to support the newspaper reports (some of which were speculative). Research has shown that people speculated about computers playing music, possibly because computers would make noises, but there is no evidence that they did it. The world's first computer to play music was the CSIR Mark 1 (later named CSIRAC), which was designed and built by Trevor Pearcey and Maston Beard in the late 1940s. Mathematician Geoff Hill programmed the CSIR Mark 1 to play popular musical melodies from the very early 1950s. In 1950 the CSIR Mark 1 was used to play music, the first known use of a digital computer for that purpose. The music was never recorded, but it has been accurately reconstructed. In 1951 it publicly played the "Colonel Bogey March" of which only the reconstruction exists. However, the CSIR Mark 1 played standard repertoire and was not used to extend musical thinking or composition practice, as Max Mathews did, which is current computer-music practice. The first music to be performed in England was a performance of the British National Anthem that was programmed by Christopher Strachey on the Ferranti Mark 1, late in 1951. Later that year, short extracts of three pieces were recorded there by a BBC outside broadcasting unit: the National Anthem, "Baa, Baa, Black Sheep", and "In the Mood"; this is recognized as the earliest recording of a computer to play music as the CSIRAC music was never recorded. This recording can be heard at the this Manchester University site. Researchers at the University of Canterbury, Christchurch declicked and restored this recording in 2016 and the results may be heard on SoundCloud. Two further major 1950s developments were the origins of digital sound synthesis by computer, and of algorithmic composition programs beyond rote playback. Amongst other pioneers, the musical chemists Lejaren Hiller and Leonard Isaacson worked on a series of algorithmic composition experiments from 1956 to 1959, manifested in the 1957 premiere of the Illiac Suite for string quartet. Max Mathews at Bell Laboratories developed the influential MUSIC I program and its descendants, further popularising computer music through a 1963 article in Science. The first professional composer to work with digital synthesis was James Tenney, who created a series of digitally synthesized and/or algorithmically composed pieces at Bell Labs using Mathews' MUSIC III system, beginning with Analog #1 (Noise Study) (1961). After Tenney left Bell Labs in 1964, he was replaced by composer Jean-Claude Risset, who conducted research on the synthesis of instrumental timbres and composed Computer Suite from Little Boy (1968). Early computer-music programs typically did not run in real time, although the first experiments on CSIRAC and the Ferranti Mark 1 did operate in real time. From the late 1950s, with increasingly sophisticated programming, programs would run for hours or days, on multi million-dollar computers, to generate a few minutes of music. One way around this was to use a 'hybrid system' of digital control of an analog synthesiser and early examples of this were Max Mathews' GROOVE system (1969) and also MUSYS by Peter Zinovieff (1969). Until now partial use has been exploited for musical research into the substance and form of sound (convincing examples are those of Hiller and Isaacson in Urbana, Illinois, US; Iannis Xenakis in Paris and Pietro Grossi in Florence, Italy). In May 1967 the first experiments in computer music in Italy were carried out by the S 2F M studio in Florence in collaboration with General Electric Information Systems Italy. Olivetti-General Electric GE 115 (Olivetti S.p.A.) is used by Grossi as a performer: three programmes were prepared for these experiments. The programmes were written by Ferruccio Zulian and used by Pietro Grossi for playing Bach, Paganini, and Webern works and for studying new sound structures. John Chowning's work on FM synthesis from the 1960s to the 1970s allowed much more efficient digital synthesis, eventually leading to the development of the affordable FM synthesis-based Yamaha DX7 digital synthesizer, released in 1983. Interesting sounds must have a fluidity and changeability that allows them to remain fresh to the ear. In computer music this subtle ingredient is bought at a high computational cost, both in terms of the number of items requiring detail in a score and in the amount of interpretive work the instruments must produce to realize this detail in sound. In Japan, experiments in computer music date back to 1962, when Keio University professor Sekine and Toshiba engineer Hayashi experimented with the TOSBAC computer. This resulted in a piece entitled TOSBAC Suite, influenced by the Illiac Suite. Later Japanese computer music compositions include a piece by Kenjiro Ezaki presented during Osaka Expo '70 and "Panoramic Sonore" (1974) by music critic Akimichi Takeda. Ezaki also published an article called "Contemporary Music and Computers" in 1970. Since then, Japanese research in computer music has largely been carried out for commercial purposes in popular music, though some of the more serious Japanese musicians used large computer systems such as the Fairlight in the 1970s. In the late 1970s these systems became commercialized, notably by systems like the Roland MC-8 Microcomposer, where a microprocessor-based system controls an analog synthesizer, released in 1978. In addition to the Yamaha DX7, the advent of inexpensive digital chips and microcomputers opened the door to real-time generation of computer music. In the 1980s, Japanese personal computers such as the NEC PC-88 came installed with FM synthesis sound chips and featured audio programming languages such as Music Macro Language (MML) and MIDI interfaces, which were most often used to produce video game music, or chiptunes. By the early 1990s, the performance of microprocessor-based computers reached the point that real-time generation of computer music using more general programs and algorithms became possible. Advances in computing power and software for manipulation of digital media have dramatically affected the way computer music is generated and performed. Current-generation micro-computers are powerful enough to perform very sophisticated audio synthesis using a wide variety of algorithms and approaches. Computer music systems and approaches are now ubiquitous, and so firmly embedded in the process of creating music that we hardly give them a second thought: computer-based synthesizers, digital mixers, and effects units have become so commonplace that use of digital rather than analog technology to create and record music is the norm, rather than the exception. There is considerable activity in the field of computer music as researchers continue to pursue new and interesting computer-based synthesis, composition, and performance approaches. Throughout the world there are many organizations and institutions dedicated to the area of computer and electronic music study and research, including the CCRMA (Center of Computer Research in Music and Acoustic, Stanford, USA), ICMA (International Computer Music Association), C4DM (Centre for Digital Music), IRCAM, GRAME, SEAMUS (Society for Electro Acoustic Music in the United States), CEC (Canadian Electroacoustic Community), and a great number of institutions of higher learning around the world. Later, composers such as Gottfried Michael Koenig and Iannis Xenakis had computers generate the sounds of the composition as well as the score. Koenig produced algorithmic composition programs which were a generalization of his own serial composition practice. This is not exactly similar to Xenakis' work as he used mathematical abstractions and examined how far he could explore these musically. Koenig's software translated the calculation of mathematical equations into codes which represented musical notation. This could be converted into musical notation by hand and then performed by human players. His programs Project 1 and Project 2 are examples of this kind of software. Later, he extended the same kind of principles into the realm of synthesis, enabling the computer to produce the sound directly. SSP is an example of a program which performs this kind of function. All of these programs were produced by Koenig at the Institute of Sonology in Utrecht in the 1970s. In the 2000s, Andranik Tangian developed a computer algorithm to determine the time event structures for rhythmic canons and rhythmic fugues, which were then "manually" worked out into harmonic compositions Eine kleine Mathmusik I and Eine kleine Mathmusik II performed by computer; for scores and recordings see. Computers have also been used in an attempt to imitate the music of great composers of the past, such as Mozart. A present exponent of this technique is David Cope, whose computer programs analyses works of other composers to produce new works in a similar style. Cope's best-known program is Emily Howell. Melomics, a research project from the University of Málaga (Spain), developed a computer composition cluster named Iamus, which composes complex, multi-instrument pieces for editing and performance. Since its inception, Iamus has composed a full album in 2012, also named Iamus, which New Scientist described as "the first major work composed by a computer and performed by a full orchestra". The group has also developed an API for developers to utilize the technology, and makes its music available on its website. Computer-aided algorithmic composition (CAAC, pronounced "sea-ack") is the implementation and use of algorithmic composition techniques in software. This label is derived from the combination of two labels, each too vague for continued use. The label computer-aided composition lacks the specificity of using generative algorithms. Music produced with notation or sequencing software could easily be considered computer-aided composition. The label algorithmic composition is likewise too broad, particularly in that it does not specify the use of a computer. The term computer-aided, rather than computer-assisted, is used in the same manner as computer-aided design. Machine improvisation uses computer algorithms to create improvisation on existing music materials. This is usually done by sophisticated recombination of musical phrases extracted from existing music, either live or pre-recorded. In order to achieve credible improvisation in particular style, machine improvisation uses machine learning and pattern matching algorithms to analyze existing musical examples. The resulting patterns are then used to create new variations "in the style" of the original music, developing a notion of stylistic re-injection. This is different from other improvisation methods with computers that use algorithmic composition to generate new music without performing analysis of existing music examples. Style modeling implies building a computational representation of the musical surface that captures important stylistic features from data. Statistical approaches are used to capture the redundancies in terms of pattern dictionaries or repetitions, which are later recombined to generate new musical data. Style mixing can be realized by analysis of a database containing multiple musical examples in different styles. Machine Improvisation builds upon a long musical tradition of statistical modeling that began with Hiller and Isaacson's Illiac Suite for String Quartet (1957) and Xenakis' uses of Markov chains and stochastic processes. Modern methods include the use of lossless data compression for incremental parsing, prediction suffix tree, string searching and more. Style mixing is possible by blending models derived from several musical sources, with the first style mixing done by S. Dubnov in a piece NTrope Suite using Jensen-Shannon joint source model. Later the use of factor oracle algorithm (basically a factor oracle is a finite state automaton constructed in linear time and space in an incremental fashion) was adopted for music by Assayag and Dubnov and became the basis for several systems that use stylistic re-injection. The first implementation of statistical style modeling was the LZify method in Open Music, followed by the Continuator system that implemented interactive machine improvisation that interpreted the LZ incremental parsing in terms of Markov models and used it for real time style modeling developed by François Pachet at Sony CSL Paris in 2002. Matlab implementation of the Factor Oracle machine improvisation can be found as part of Computer Audition toolbox. There is also an NTCC implementation of the Factor Oracle machine improvisation. OMax is a software environment developed in IRCAM. OMax uses OpenMusic and Max. It is based on researches on stylistic modeling carried out by Gerard Assayag and Shlomo Dubnov and on researches on improvisation with the computer by G. Assayag, M. Chemillier and G. Bloch (a.k.a. the OMax Brothers) in the Ircam Music Representations group. One of the problems in modeling audio signals with factor oracle is the symbolization of features from continuous values to a discrete alphabet. This problem was solved in the Variable Markov Oracle (VMO) available as python implementation, using an information rate criteria for finding the optimal or most informative representation. The use of artificial intelligence to generate new melodies and cover pre-existing music, is a recent phenomenon that has been reported to disrupt the music industry. Live coding (sometimes known as 'interactive programming', 'on-the-fly programming', 'just in time programming') is the name given to the process of writing software in real time as part of a performance. Recently it has been explored as a more rigorous alternative to laptop musicians who, live coders often feel, lack the charisma and pizzazz of musicians performing live.	[ { "paragraph_id": 0, "text": "Computer music is the application of computing technology in music composition, to help human composers create new music or to have computers independently create music, such as with algorithmic composition programs. It includes the theory and application of new and existing computer software technologies and basic aspects of music, such as sound synthesis, digital signal processing, sound design, sonic diffusion, acoustics, electrical engineering, and psychoacoustics. The field of computer music can trace its roots back to the origins of electronic music, and the first experiments and innovations with electronic instruments at the turn of the 20th century.", "title": "" }, { "paragraph_id": 1, "text": "Much of the work on computer music has drawn on the relationship between music and mathematics, a relationship that has been noted since the Ancient Greeks described the \"harmony of the spheres\".", "title": "History" }, { "paragraph_id": 2, "text": "Musical melodies were first generated by the computer originally named the CSIR Mark 1 (later renamed CSIRAC) in Australia in 1950. There were newspaper reports from America and England (early and recently) that computers may have played music earlier, but thorough research has debunked these stories as there is no evidence to support the newspaper reports (some of which were speculative). Research has shown that people speculated about computers playing music, possibly because computers would make noises, but there is no evidence that they did it.", "title": "History" }, { "paragraph_id": 3, "text": "The world's first computer to play music was the CSIR Mark 1 (later named CSIRAC), which was designed and built by Trevor Pearcey and Maston Beard in the late 1940s. Mathematician Geoff Hill programmed the CSIR Mark 1 to play popular musical melodies from the very early 1950s. In 1950 the CSIR Mark 1 was used to play music, the first known use of a digital computer for that purpose. The music was never recorded, but it has been accurately reconstructed. In 1951 it publicly played the \"Colonel Bogey March\" of which only the reconstruction exists. However, the CSIR Mark 1 played standard repertoire and was not used to extend musical thinking or composition practice, as Max Mathews did, which is current computer-music practice.", "title": "History" }, { "paragraph_id": 4, "text": "The first music to be performed in England was a performance of the British National Anthem that was programmed by Christopher Strachey on the Ferranti Mark 1, late in 1951. Later that year, short extracts of three pieces were recorded there by a BBC outside broadcasting unit: the National Anthem, \"Baa, Baa, Black Sheep\", and \"In the Mood\"; this is recognized as the earliest recording of a computer to play music as the CSIRAC music was never recorded. This recording can be heard at the this Manchester University site. Researchers at the University of Canterbury, Christchurch declicked and restored this recording in 2016 and the results may be heard on SoundCloud.", "title": "History" }, { "paragraph_id": 5, "text": "Two further major 1950s developments were the origins of digital sound synthesis by computer, and of algorithmic composition programs beyond rote playback. Amongst other pioneers, the musical chemists Lejaren Hiller and Leonard Isaacson worked on a series of algorithmic composition experiments from 1956 to 1959, manifested in the 1957 premiere of the Illiac Suite for string quartet. Max Mathews at Bell Laboratories developed the influential MUSIC I program and its descendants, further popularising computer music through a 1963 article in Science. The first professional composer to work with digital synthesis was James Tenney, who created a series of digitally synthesized and/or algorithmically composed pieces at Bell Labs using Mathews' MUSIC III system, beginning with Analog #1 (Noise Study) (1961). After Tenney left Bell Labs in 1964, he was replaced by composer Jean-Claude Risset, who conducted research on the synthesis of instrumental timbres and composed Computer Suite from Little Boy (1968).", "title": "History" }, { "paragraph_id": 6, "text": "Early computer-music programs typically did not run in real time, although the first experiments on CSIRAC and the Ferranti Mark 1 did operate in real time. From the late 1950s, with increasingly sophisticated programming, programs would run for hours or days, on multi million-dollar computers, to generate a few minutes of music. One way around this was to use a 'hybrid system' of digital control of an analog synthesiser and early examples of this were Max Mathews' GROOVE system (1969) and also MUSYS by Peter Zinovieff (1969).", "title": "History" }, { "paragraph_id": 7, "text": "Until now partial use has been exploited for musical research into the substance and form of sound (convincing examples are those of Hiller and Isaacson in Urbana, Illinois, US; Iannis Xenakis in Paris and Pietro Grossi in Florence, Italy).", "title": "History" }, { "paragraph_id": 8, "text": "In May 1967 the first experiments in computer music in Italy were carried out by the S 2F M studio in Florence in collaboration with General Electric Information Systems Italy. Olivetti-General Electric GE 115 (Olivetti S.p.A.) is used by Grossi as a performer: three programmes were prepared for these experiments. The programmes were written by Ferruccio Zulian and used by Pietro Grossi for playing Bach, Paganini, and Webern works and for studying new sound structures.", "title": "History" }, { "paragraph_id": 9, "text": "John Chowning's work on FM synthesis from the 1960s to the 1970s allowed much more efficient digital synthesis, eventually leading to the development of the affordable FM synthesis-based Yamaha DX7 digital synthesizer, released in 1983.", "title": "History" }, { "paragraph_id": 10, "text": "Interesting sounds must have a fluidity and changeability that allows them to remain fresh to the ear. In computer music this subtle ingredient is bought at a high computational cost, both in terms of the number of items requiring detail in a score and in the amount of interpretive work the instruments must produce to realize this detail in sound.", "title": "History" }, { "paragraph_id": 11, "text": "In Japan, experiments in computer music date back to 1962, when Keio University professor Sekine and Toshiba engineer Hayashi experimented with the TOSBAC computer. This resulted in a piece entitled TOSBAC Suite, influenced by the Illiac Suite. Later Japanese computer music compositions include a piece by Kenjiro Ezaki presented during Osaka Expo '70 and \"Panoramic Sonore\" (1974) by music critic Akimichi Takeda. Ezaki also published an article called \"Contemporary Music and Computers\" in 1970. Since then, Japanese research in computer music has largely been carried out for commercial purposes in popular music, though some of the more serious Japanese musicians used large computer systems such as the Fairlight in the 1970s.", "title": "History" }, { "paragraph_id": 12, "text": "In the late 1970s these systems became commercialized, notably by systems like the Roland MC-8 Microcomposer, where a microprocessor-based system controls an analog synthesizer, released in 1978. In addition to the Yamaha DX7, the advent of inexpensive digital chips and microcomputers opened the door to real-time generation of computer music. In the 1980s, Japanese personal computers such as the NEC PC-88 came installed with FM synthesis sound chips and featured audio programming languages such as Music Macro Language (MML) and MIDI interfaces, which were most often used to produce video game music, or chiptunes. By the early 1990s, the performance of microprocessor-based computers reached the point that real-time generation of computer music using more general programs and algorithms became possible.", "title": "History" }, { "paragraph_id": 13, "text": "Advances in computing power and software for manipulation of digital media have dramatically affected the way computer music is generated and performed. Current-generation micro-computers are powerful enough to perform very sophisticated audio synthesis using a wide variety of algorithms and approaches. Computer music systems and approaches are now ubiquitous, and so firmly embedded in the process of creating music that we hardly give them a second thought: computer-based synthesizers, digital mixers, and effects units have become so commonplace that use of digital rather than analog technology to create and record music is the norm, rather than the exception.", "title": "Advances" }, { "paragraph_id": 14, "text": "There is considerable activity in the field of computer music as researchers continue to pursue new and interesting computer-based synthesis, composition, and performance approaches. Throughout the world there are many organizations and institutions dedicated to the area of computer and electronic music study and research, including the CCRMA (Center of Computer Research in Music and Acoustic, Stanford, USA), ICMA (International Computer Music Association), C4DM (Centre for Digital Music), IRCAM, GRAME, SEAMUS (Society for Electro Acoustic Music in the United States), CEC (Canadian Electroacoustic Community), and a great number of institutions of higher learning around the world.", "title": "Research" }, { "paragraph_id": 15, "text": "Later, composers such as Gottfried Michael Koenig and Iannis Xenakis had computers generate the sounds of the composition as well as the score. Koenig produced algorithmic composition programs which were a generalization of his own serial composition practice. This is not exactly similar to Xenakis' work as he used mathematical abstractions and examined how far he could explore these musically. Koenig's software translated the calculation of mathematical equations into codes which represented musical notation. This could be converted into musical notation by hand and then performed by human players. His programs Project 1 and Project 2 are examples of this kind of software. Later, he extended the same kind of principles into the realm of synthesis, enabling the computer to produce the sound directly. SSP is an example of a program which performs this kind of function. All of these programs were produced by Koenig at the Institute of Sonology in Utrecht in the 1970s. In the 2000s, Andranik Tangian developed a computer algorithm to determine the time event structures for rhythmic canons and rhythmic fugues, which were then \"manually\" worked out into harmonic compositions Eine kleine Mathmusik I and Eine kleine Mathmusik II performed by computer; for scores and recordings see.", "title": "Research" }, { "paragraph_id": 16, "text": "Computers have also been used in an attempt to imitate the music of great composers of the past, such as Mozart. A present exponent of this technique is David Cope, whose computer programs analyses works of other composers to produce new works in a similar style. Cope's best-known program is Emily Howell.", "title": "Research" }, { "paragraph_id": 17, "text": "Melomics, a research project from the University of Málaga (Spain), developed a computer composition cluster named Iamus, which composes complex, multi-instrument pieces for editing and performance. Since its inception, Iamus has composed a full album in 2012, also named Iamus, which New Scientist described as \"the first major work composed by a computer and performed by a full orchestra\". The group has also developed an API for developers to utilize the technology, and makes its music available on its website.", "title": "Research" }, { "paragraph_id": 18, "text": "Computer-aided algorithmic composition (CAAC, pronounced \"sea-ack\") is the implementation and use of algorithmic composition techniques in software. This label is derived from the combination of two labels, each too vague for continued use. The label computer-aided composition lacks the specificity of using generative algorithms. Music produced with notation or sequencing software could easily be considered computer-aided composition. The label algorithmic composition is likewise too broad, particularly in that it does not specify the use of a computer. The term computer-aided, rather than computer-assisted, is used in the same manner as computer-aided design.", "title": "Research" }, { "paragraph_id": 19, "text": "Machine improvisation uses computer algorithms to create improvisation on existing music materials. This is usually done by sophisticated recombination of musical phrases extracted from existing music, either live or pre-recorded. In order to achieve credible improvisation in particular style, machine improvisation uses machine learning and pattern matching algorithms to analyze existing musical examples. The resulting patterns are then used to create new variations \"in the style\" of the original music, developing a notion of stylistic re-injection. This is different from other improvisation methods with computers that use algorithmic composition to generate new music without performing analysis of existing music examples.", "title": "Machine improvisation" }, { "paragraph_id": 20, "text": "Style modeling implies building a computational representation of the musical surface that captures important stylistic features from data. Statistical approaches are used to capture the redundancies in terms of pattern dictionaries or repetitions, which are later recombined to generate new musical data. Style mixing can be realized by analysis of a database containing multiple musical examples in different styles. Machine Improvisation builds upon a long musical tradition of statistical modeling that began with Hiller and Isaacson's Illiac Suite for String Quartet (1957) and Xenakis' uses of Markov chains and stochastic processes. Modern methods include the use of lossless data compression for incremental parsing, prediction suffix tree, string searching and more. Style mixing is possible by blending models derived from several musical sources, with the first style mixing done by S. Dubnov in a piece NTrope Suite using Jensen-Shannon joint source model. Later the use of factor oracle algorithm (basically a factor oracle is a finite state automaton constructed in linear time and space in an incremental fashion) was adopted for music by Assayag and Dubnov and became the basis for several systems that use stylistic re-injection.", "title": "Machine improvisation" }, { "paragraph_id": 21, "text": "The first implementation of statistical style modeling was the LZify method in Open Music, followed by the Continuator system that implemented interactive machine improvisation that interpreted the LZ incremental parsing in terms of Markov models and used it for real time style modeling developed by François Pachet at Sony CSL Paris in 2002. Matlab implementation of the Factor Oracle machine improvisation can be found as part of Computer Audition toolbox. There is also an NTCC implementation of the Factor Oracle machine improvisation.", "title": "Machine improvisation" }, { "paragraph_id": 22, "text": "OMax is a software environment developed in IRCAM. OMax uses OpenMusic and Max. It is based on researches on stylistic modeling carried out by Gerard Assayag and Shlomo Dubnov and on researches on improvisation with the computer by G. Assayag, M. Chemillier and G. Bloch (a.k.a. the OMax Brothers) in the Ircam Music Representations group. One of the problems in modeling audio signals with factor oracle is the symbolization of features from continuous values to a discrete alphabet. This problem was solved in the Variable Markov Oracle (VMO) available as python implementation, using an information rate criteria for finding the optimal or most informative representation.", "title": "Machine improvisation" }, { "paragraph_id": 23, "text": "The use of artificial intelligence to generate new melodies and cover pre-existing music, is a recent phenomenon that has been reported to disrupt the music industry.", "title": "Machine improvisation" }, { "paragraph_id": 24, "text": "Live coding (sometimes known as 'interactive programming', 'on-the-fly programming', 'just in time programming') is the name given to the process of writing software in real time as part of a performance. Recently it has been explored as a more rigorous alternative to laptop musicians who, live coders often feel, lack the charisma and pizzazz of musicians performing live.", "title": "Live coding" } ]	Computer music is the application of computing technology in music composition, to help human composers create new music or to have computers independently create music, such as with algorithmic composition programs. It includes the theory and application of new and existing computer software technologies and basic aspects of music, such as sound synthesis, digital signal processing, sound design, sonic diffusion, acoustics, electrical engineering, and psychoacoustics. The field of computer music can trace its roots back to the origins of electronic music, and the first experiments and innovations with electronic instruments at the turn of the 20th century.	2001-11-03T14:55:05Z	2023-12-15T19:50:55Z	[ "Template:Harvnb", "Template:Harvc", "Template:Webarchive", "Template:Anchor", "Template:Ill", "Template:Dead link", "Template:Use dmy dates", "Template:Portal", "Template:ISBN", "Template:Doi", "Template:Cite magazine", "Template:Digital art", "Template:See also", "Template:Cite web", "Template:Cite book", "Template:Reflist", "Template:Main", "Template:Div col end", "Template:Authority control", "Template:Redirect", "Template:Electronica", "Template:Page needed", "Template:Short description", "Template:Div col", "Template:Cite journal", "Template:Cite news", "Template:Computer music", "Template:Advert" ]	https://en.wikipedia.org/wiki/Computer_music
6,978	Concept	A concept is defined as an abstract idea. It is understood to be a fundamental building block underlying principles, thoughts and beliefs. Concepts play an important role in all aspects of cognition. As such, concepts are studied within such disciplines as linguistics, psychology, and philosophy, and these disciplines are interested in the logical and psychological structure of concepts, and how they are put together to form thoughts and sentences. The study of concepts has served as an important flagship of an emerging interdisciplinary approach, cognitive science. In contemporary philosophy, three understandings of a concept prevail: Concepts are classified into a hierarchy, higher levels of which are termed "superordinate" and lower levels termed "subordinate". Additionally, there is the "basic" or "middle" level at which people will most readily categorize a concept. For example, a basic-level concept would be "chair", with its superordinate, "furniture", and its subordinate, "easy chair". Concepts may be exact, or inexact. When the mind makes a generalization such as the concept of tree, it extracts similarities from numerous examples; the simplification enables higher-level thinking. A concept is instantiated (reified) by all of its actual or potential instances, whether these are things in the real world or other ideas. Concepts are studied as components of human cognition in the cognitive science disciplines of linguistics, psychology, and philosophy, where an ongoing debate asks whether all cognition must occur through concepts. Concepts are regularly formalized in mathematics, computer science, databases and artificial intelligence. Examples of specific high-level conceptual classes in these fields include classes, schema or categories. In informal use the word concept often just means any idea. A central question in the study of concepts is the question of what they are. Philosophers construe this question as one about the ontology of concepts—what kind of things they are. The ontology of concepts determines the answer to other questions, such as how to integrate concepts into a wider theory of the mind, what functions are allowed or disallowed by a concept's ontology, etc. There are two main views of the ontology of concepts: (1) Concepts are abstract objects, and (2) concepts are mental representations. Within the framework of the representational theory of mind, the structural position of concepts can be understood as follows: Concepts serve as the building blocks of what are called mental representations (colloquially understood as ideas in the mind). Mental representations, in turn, are the building blocks of what are called propositional attitudes (colloquially understood as the stances or perspectives we take towards ideas, be it "believing", "doubting", "wondering", "accepting", etc.). And these propositional attitudes, in turn, are the building blocks of our understanding of thoughts that populate everyday life, as well as folk psychology. In this way, we have an analysis that ties our common everyday understanding of thoughts down to the scientific and philosophical understanding of concepts. In a physicalist theory of mind, a concept is a mental representation, which the brain uses to denote a class of things in the world. This is to say that it is literally, a symbol or group of symbols together made from the physical material of the brain. Concepts are mental representations that allow us to draw appropriate inferences about the type of entities we encounter in our everyday lives. Concepts do not encompass all mental representations, but are merely a subset of them. The use of concepts is necessary to cognitive processes such as categorization, memory, decision making, learning, and inference. Concepts are thought to be stored in long term cortical memory, in contrast to episodic memory of the particular objects and events which they abstract, which are stored in hippocampus. Evidence for this separation comes from hippocampal damaged patients such as patient HM. The abstraction from the day's hippocampal events and objects into cortical concepts is often considered to be the computation underlying (some stages of) sleep and dreaming. Many people (beginning with Aristotle) report memories of dreams which appear to mix the day's events with analogous or related historical concepts and memories, and suggest that they were being sorted or organized into more abstract concepts. ("Sort" is itself another word for concept, and "sorting" thus means to organize into concepts.) The semantic view of concepts suggests that concepts are abstract objects. In this view, concepts are abstract objects of a category out of a human's mind rather than some mental representations. There is debate as to the relationship between concepts and natural language. However, it is necessary at least to begin by understanding that the concept "dog" is philosophically distinct from the things in the world grouped by this concept—or the reference class or extension. Concepts that can be equated to a single word are called "lexical concepts". The study of concepts and conceptual structure falls into the disciplines of linguistics, philosophy, psychology, and cognitive science. In the simplest terms, a concept is a name or label that regards or treats an abstraction as if it had concrete or material existence, such as a person, a place, or a thing. It may represent a natural object that exists in the real world like a tree, an animal, a stone, etc. It may also name an artificial (man-made) object like a chair, computer, house, etc. Abstract ideas and knowledge domains such as freedom, equality, science, happiness, etc., are also symbolized by concepts. It is important to realize that a concept is merely a symbol, a representation of the abstraction. The word is not to be mistaken for the thing. For example, the word "moon" (a concept) is not the large, bright, shape-changing object up in the sky, but only represents that celestial object. Concepts are created (named) to describe, explain and capture reality as it is known and understood. Kant maintained the view that human minds possess pure or a priori concepts. Instead of being abstracted from individual perceptions, like empirical concepts, they originate in the mind itself. He called these concepts categories, in the sense of the word that means predicate, attribute, characteristic, or quality. But these pure categories are predicates of things in general, not of a particular thing. According to Kant, there are twelve categories that constitute the understanding of phenomenal objects. Each category is that one predicate which is common to multiple empirical concepts. In order to explain how an a priori concept can relate to individual phenomena, in a manner analogous to an a posteriori concept, Kant employed the technical concept of the schema. He held that the account of the concept as an abstraction of experience is only partly correct. He called those concepts that result from abstraction "a posteriori concepts" (meaning concepts that arise out of experience). An empirical or an a posteriori concept is a general representation (Vorstellung) or non-specific thought of that which is common to several specific perceived objects (Logic, I, 1., §1, Note 1) A concept is a common feature or characteristic. Kant investigated the way that empirical a posteriori concepts are created. The logical acts of the understanding by which concepts are generated as to their form are: In order to make our mental images into concepts, one must thus be able to compare, reflect, and abstract, for these three logical operations of the understanding are essential and general conditions of generating any concept whatever. For example, I see a fir, a willow, and a linden. In firstly comparing these objects, I notice that they are different from one another in respect of trunk, branches, leaves, and the like; further, however, I reflect only on what they have in common, the trunk, the branches, the leaves themselves, and abstract from their size, shape, and so forth; thus I gain a concept of a tree. In cognitive linguistics, abstract concepts are transformations of concrete concepts derived from embodied experience. The mechanism of transformation is structural mapping, in which properties of two or more source domains are selectively mapped onto a blended space (Fauconnier & Turner, 1995; see conceptual blending). A common class of blends are metaphors. This theory contrasts with the rationalist view that concepts are perceptions (or recollections, in Plato's term) of an independently existing world of ideas, in that it denies the existence of any such realm. It also contrasts with the empiricist view that concepts are abstract generalizations of individual experiences, because the contingent and bodily experience is preserved in a concept, and not abstracted away. While the perspective is compatible with Jamesian pragmatism, the notion of the transformation of embodied concepts through structural mapping makes a distinct contribution to the problem of concept formation. Platonist views of the mind construe concepts as abstract objects. Plato was the starkest proponent of the realist thesis of universal concepts. By his view, concepts (and ideas in general) are innate ideas that were instantiations of a transcendental world of pure forms that lay behind the veil of the physical world. In this way, universals were explained as transcendent objects. Needless to say, this form of realism was tied deeply with Plato's ontological projects. This remark on Plato is not of merely historical interest. For example, the view that numbers are Platonic objects was revived by Kurt Gödel as a result of certain puzzles that he took to arise from the phenomenological accounts. Gottlob Frege, founder of the analytic tradition in philosophy, famously argued for the analysis of language in terms of sense and reference. For him, the sense of an expression in language describes a certain state of affairs in the world, namely, the way that some object is presented. Since many commentators view the notion of sense as identical to the notion of concept, and Frege regards senses as the linguistic representations of states of affairs in the world, it seems to follow that we may understand concepts as the manner in which we grasp the world. Accordingly, concepts (as senses) have an ontological status. According to Carl Benjamin Boyer, in the introduction to his The History of the Calculus and its Conceptual Development, concepts in calculus do not refer to perceptions. As long as the concepts are useful and mutually compatible, they are accepted on their own. For example, the concepts of the derivative and the integral are not considered to refer to spatial or temporal perceptions of the external world of experience. Neither are they related in any way to mysterious limits in which quantities are on the verge of nascence or evanescence, that is, coming into or going out of existence. The abstract concepts are now considered to be totally autonomous, even though they originated from the process of abstracting or taking away qualities from perceptions until only the common, essential attributes remained. The classical theory of concepts, also referred to as the empiricist theory of concepts, is the oldest theory about the structure of concepts (it can be traced back to Aristotle), and was prominently held until the 1970s. The classical theory of concepts says that concepts have a definitional structure. Adequate definitions of the kind required by this theory usually take the form of a list of features. These features must have two important qualities to provide a comprehensive definition. Features entailed by the definition of a concept must be both necessary and sufficient for membership in the class of things covered by a particular concept. A feature is considered necessary if every member of the denoted class has that feature. A feature is considered sufficient if something has all the parts required by the definition. For example, the classic example bachelor is said to be defined by unmarried and man. An entity is a bachelor (by this definition) if and only if it is both unmarried and a man. To check whether something is a member of the class, you compare its qualities to the features in the definition. Another key part of this theory is that it obeys the law of the excluded middle, which means that there are no partial members of a class, you are either in or out. The classical theory persisted for so long unquestioned because it seemed intuitively correct and has great explanatory power. It can explain how concepts would be acquired, how we use them to categorize and how we use the structure of a concept to determine its referent class. In fact, for many years it was one of the major activities in philosophy—concept analysis. Concept analysis is the act of trying to articulate the necessary and sufficient conditions for the membership in the referent class of a concept. For example, Shoemaker's classic "Time Without Change" explored whether the concept of the flow of time can include flows where no changes take place, though change is usually taken as a definition of time. Given that most later theories of concepts were born out of the rejection of some or all of the classical theory, it seems appropriate to give an account of what might be wrong with this theory. In the 20th century, philosophers such as Wittgenstein and Rosch argued against the classical theory. There are six primary arguments summarized as follows: Prototype theory came out of problems with the classical view of conceptual structure. Prototype theory says that concepts specify properties that members of a class tend to possess, rather than must possess. Wittgenstein, Rosch, Mervis, Berlin, Anglin, and Posner are a few of the key proponents and creators of this theory. Wittgenstein describes the relationship between members of a class as family resemblances. There are not necessarily any necessary conditions for membership; a dog can still be a dog with only three legs. This view is particularly supported by psychological experimental evidence for prototypicality effects. Participants willingly and consistently rate objects in categories like 'vegetable' or 'furniture' as more or less typical of that class. It seems that our categories are fuzzy psychologically, and so this structure has explanatory power. We can judge an item's membership of the referent class of a concept by comparing it to the typical member—the most central member of the concept. If it is similar enough in the relevant ways, it will be cognitively admitted as a member of the relevant class of entities. Rosch suggests that every category is represented by a central exemplar which embodies all or the maximum possible number of features of a given category. Lech, Gunturkun, and Suchan explain that categorization involves many areas of the brain. Some of these are: visual association areas, prefrontal cortex, basal ganglia, and temporal lobe. The Prototype perspective is proposed as an alternative view to the Classical approach. While the Classical theory requires an all-or-nothing membership in a group, prototypes allow for more fuzzy boundaries and are characterized by attributes. Lakoff stresses that experience and cognition are critical to the function of language, and Labov's experiment found that the function that an artifact contributed to what people categorized it as. For example, a container holding mashed potatoes versus tea swayed people toward classifying them as a bowl and a cup, respectively. This experiment also illuminated the optimal dimensions of what the prototype for "cup" is. Prototypes also deal with the essence of things and to what extent they belong to a category. There have been a number of experiments dealing with questionnaires asking participants to rate something according to the extent to which it belongs to a category. This question is contradictory to the Classical Theory because something is either a member of a category or is not. This type of problem is paralleled in other areas of linguistics such as phonology, with an illogical question such as "is /i/ or /o/ a better vowel?" The Classical approach and Aristotelian categories may be a better descriptor in some cases. Theory-theory is a reaction to the previous two theories and develops them further. This theory postulates that categorization by concepts is something like scientific theorizing. Concepts are not learned in isolation, but rather are learned as a part of our experiences with the world around us. In this sense, concepts' structure relies on their relationships to other concepts as mandated by a particular mental theory about the state of the world. How this is supposed to work is a little less clear than in the previous two theories, but is still a prominent and notable theory. This is supposed to explain some of the issues of ignorance and error that come up in prototype and classical theories as concepts that are structured around each other seem to account for errors such as whale as a fish (this misconception came from an incorrect theory about what a whale is like, combining with our theory of what a fish is). When we learn that a whale is not a fish, we are recognizing that whales don't in fact fit the theory we had about what makes something a fish. Theory-theory also postulates that people's theories about the world are what inform their conceptual knowledge of the world. Therefore, analysing people's theories can offer insights into their concepts. In this sense, "theory" means an individual's mental explanation rather than scientific fact. This theory criticizes classical and prototype theory as relying too much on similarities and using them as a sufficient constraint. It suggests that theories or mental understandings contribute more to what has membership to a group rather than weighted similarities, and a cohesive category is formed more by what makes sense to the perceiver. Weights assigned to features have shown to fluctuate and vary depending on context and experimental task demonstrated by Tversky. For this reason, similarities between members may be collateral rather than causal. According to the theory of ideasthesia (or "sensing concepts"), activation of a concept may be the main mechanism responsible for the creation of phenomenal experiences. Therefore, understanding how the brain processes concepts may be central to solving the mystery of how conscious experiences (or qualia) emerge within a physical system e.g., the sourness of the sour taste of lemon. This question is also known as the hard problem of consciousness. Research on ideasthesia emerged from research on synesthesia where it was noted that a synesthetic experience requires first an activation of a concept of the inducer. Later research expanded these results into everyday perception. There is a lot of discussion on the most effective theory in concepts. Another theory is semantic pointers, which use perceptual and motor representations and these representations are like symbols. The term "concept" is traced back to 1554–60 (Latin conceptum – "something conceived").	[ { "paragraph_id": 0, "text": "A concept is defined as an abstract idea. It is understood to be a fundamental building block underlying principles, thoughts and beliefs. Concepts play an important role in all aspects of cognition. As such, concepts are studied within such disciplines as linguistics, psychology, and philosophy, and these disciplines are interested in the logical and psychological structure of concepts, and how they are put together to form thoughts and sentences. The study of concepts has served as an important flagship of an emerging interdisciplinary approach, cognitive science.", "title": "" }, { "paragraph_id": 1, "text": "In contemporary philosophy, three understandings of a concept prevail:", "title": "" }, { "paragraph_id": 2, "text": "Concepts are classified into a hierarchy, higher levels of which are termed \"superordinate\" and lower levels termed \"subordinate\". Additionally, there is the \"basic\" or \"middle\" level at which people will most readily categorize a concept. For example, a basic-level concept would be \"chair\", with its superordinate, \"furniture\", and its subordinate, \"easy chair\".", "title": "" }, { "paragraph_id": 3, "text": "Concepts may be exact, or inexact. When the mind makes a generalization such as the concept of tree, it extracts similarities from numerous examples; the simplification enables higher-level thinking. A concept is instantiated (reified) by all of its actual or potential instances, whether these are things in the real world or other ideas.", "title": "" }, { "paragraph_id": 4, "text": "Concepts are studied as components of human cognition in the cognitive science disciplines of linguistics, psychology, and philosophy, where an ongoing debate asks whether all cognition must occur through concepts. Concepts are regularly formalized in mathematics, computer science, databases and artificial intelligence. Examples of specific high-level conceptual classes in these fields include classes, schema or categories. In informal use the word concept often just means any idea.", "title": "" }, { "paragraph_id": 5, "text": "A central question in the study of concepts is the question of what they are. Philosophers construe this question as one about the ontology of concepts—what kind of things they are. The ontology of concepts determines the answer to other questions, such as how to integrate concepts into a wider theory of the mind, what functions are allowed or disallowed by a concept's ontology, etc. There are two main views of the ontology of concepts: (1) Concepts are abstract objects, and (2) concepts are mental representations.", "title": "Ontology of concepts" }, { "paragraph_id": 6, "text": "Within the framework of the representational theory of mind, the structural position of concepts can be understood as follows: Concepts serve as the building blocks of what are called mental representations (colloquially understood as ideas in the mind). Mental representations, in turn, are the building blocks of what are called propositional attitudes (colloquially understood as the stances or perspectives we take towards ideas, be it \"believing\", \"doubting\", \"wondering\", \"accepting\", etc.). And these propositional attitudes, in turn, are the building blocks of our understanding of thoughts that populate everyday life, as well as folk psychology. In this way, we have an analysis that ties our common everyday understanding of thoughts down to the scientific and philosophical understanding of concepts.", "title": "Ontology of concepts" }, { "paragraph_id": 7, "text": "In a physicalist theory of mind, a concept is a mental representation, which the brain uses to denote a class of things in the world. This is to say that it is literally, a symbol or group of symbols together made from the physical material of the brain. Concepts are mental representations that allow us to draw appropriate inferences about the type of entities we encounter in our everyday lives. Concepts do not encompass all mental representations, but are merely a subset of them. The use of concepts is necessary to cognitive processes such as categorization, memory, decision making, learning, and inference.", "title": "Ontology of concepts" }, { "paragraph_id": 8, "text": "Concepts are thought to be stored in long term cortical memory, in contrast to episodic memory of the particular objects and events which they abstract, which are stored in hippocampus. Evidence for this separation comes from hippocampal damaged patients such as patient HM. The abstraction from the day's hippocampal events and objects into cortical concepts is often considered to be the computation underlying (some stages of) sleep and dreaming. Many people (beginning with Aristotle) report memories of dreams which appear to mix the day's events with analogous or related historical concepts and memories, and suggest that they were being sorted or organized into more abstract concepts. (\"Sort\" is itself another word for concept, and \"sorting\" thus means to organize into concepts.)", "title": "Ontology of concepts" }, { "paragraph_id": 9, "text": "The semantic view of concepts suggests that concepts are abstract objects. In this view, concepts are abstract objects of a category out of a human's mind rather than some mental representations.", "title": "Ontology of concepts" }, { "paragraph_id": 10, "text": "There is debate as to the relationship between concepts and natural language. However, it is necessary at least to begin by understanding that the concept \"dog\" is philosophically distinct from the things in the world grouped by this concept—or the reference class or extension. Concepts that can be equated to a single word are called \"lexical concepts\".", "title": "Ontology of concepts" }, { "paragraph_id": 11, "text": "The study of concepts and conceptual structure falls into the disciplines of linguistics, philosophy, psychology, and cognitive science.", "title": "Ontology of concepts" }, { "paragraph_id": 12, "text": "In the simplest terms, a concept is a name or label that regards or treats an abstraction as if it had concrete or material existence, such as a person, a place, or a thing. It may represent a natural object that exists in the real world like a tree, an animal, a stone, etc. It may also name an artificial (man-made) object like a chair, computer, house, etc. Abstract ideas and knowledge domains such as freedom, equality, science, happiness, etc., are also symbolized by concepts. It is important to realize that a concept is merely a symbol, a representation of the abstraction. The word is not to be mistaken for the thing. For example, the word \"moon\" (a concept) is not the large, bright, shape-changing object up in the sky, but only represents that celestial object. Concepts are created (named) to describe, explain and capture reality as it is known and understood.", "title": "Ontology of concepts" }, { "paragraph_id": 13, "text": "Kant maintained the view that human minds possess pure or a priori concepts. Instead of being abstracted from individual perceptions, like empirical concepts, they originate in the mind itself. He called these concepts categories, in the sense of the word that means predicate, attribute, characteristic, or quality. But these pure categories are predicates of things in general, not of a particular thing. According to Kant, there are twelve categories that constitute the understanding of phenomenal objects. Each category is that one predicate which is common to multiple empirical concepts. In order to explain how an a priori concept can relate to individual phenomena, in a manner analogous to an a posteriori concept, Kant employed the technical concept of the schema. He held that the account of the concept as an abstraction of experience is only partly correct. He called those concepts that result from abstraction \"a posteriori concepts\" (meaning concepts that arise out of experience). An empirical or an a posteriori concept is a general representation (Vorstellung) or non-specific thought of that which is common to several specific perceived objects (Logic, I, 1., §1, Note 1)", "title": "Ontology of concepts" }, { "paragraph_id": 14, "text": "A concept is a common feature or characteristic. Kant investigated the way that empirical a posteriori concepts are created.", "title": "Ontology of concepts" }, { "paragraph_id": 15, "text": "The logical acts of the understanding by which concepts are generated as to their form are:", "title": "Ontology of concepts" }, { "paragraph_id": 16, "text": "In order to make our mental images into concepts, one must thus be able to compare, reflect, and abstract, for these three logical operations of the understanding are essential and general conditions of generating any concept whatever. For example, I see a fir, a willow, and a linden. In firstly comparing these objects, I notice that they are different from one another in respect of trunk, branches, leaves, and the like; further, however, I reflect only on what they have in common, the trunk, the branches, the leaves themselves, and abstract from their size, shape, and so forth; thus I gain a concept of a tree.", "title": "Ontology of concepts" }, { "paragraph_id": 17, "text": "In cognitive linguistics, abstract concepts are transformations of concrete concepts derived from embodied experience. The mechanism of transformation is structural mapping, in which properties of two or more source domains are selectively mapped onto a blended space (Fauconnier & Turner, 1995; see conceptual blending). A common class of blends are metaphors. This theory contrasts with the rationalist view that concepts are perceptions (or recollections, in Plato's term) of an independently existing world of ideas, in that it denies the existence of any such realm. It also contrasts with the empiricist view that concepts are abstract generalizations of individual experiences, because the contingent and bodily experience is preserved in a concept, and not abstracted away. While the perspective is compatible with Jamesian pragmatism, the notion of the transformation of embodied concepts through structural mapping makes a distinct contribution to the problem of concept formation.", "title": "Ontology of concepts" }, { "paragraph_id": 18, "text": "Platonist views of the mind construe concepts as abstract objects. Plato was the starkest proponent of the realist thesis of universal concepts. By his view, concepts (and ideas in general) are innate ideas that were instantiations of a transcendental world of pure forms that lay behind the veil of the physical world. In this way, universals were explained as transcendent objects. Needless to say, this form of realism was tied deeply with Plato's ontological projects. This remark on Plato is not of merely historical interest. For example, the view that numbers are Platonic objects was revived by Kurt Gödel as a result of certain puzzles that he took to arise from the phenomenological accounts.", "title": "Ontology of concepts" }, { "paragraph_id": 19, "text": "Gottlob Frege, founder of the analytic tradition in philosophy, famously argued for the analysis of language in terms of sense and reference. For him, the sense of an expression in language describes a certain state of affairs in the world, namely, the way that some object is presented. Since many commentators view the notion of sense as identical to the notion of concept, and Frege regards senses as the linguistic representations of states of affairs in the world, it seems to follow that we may understand concepts as the manner in which we grasp the world. Accordingly, concepts (as senses) have an ontological status.", "title": "Ontology of concepts" }, { "paragraph_id": 20, "text": "According to Carl Benjamin Boyer, in the introduction to his The History of the Calculus and its Conceptual Development, concepts in calculus do not refer to perceptions. As long as the concepts are useful and mutually compatible, they are accepted on their own. For example, the concepts of the derivative and the integral are not considered to refer to spatial or temporal perceptions of the external world of experience. Neither are they related in any way to mysterious limits in which quantities are on the verge of nascence or evanescence, that is, coming into or going out of existence. The abstract concepts are now considered to be totally autonomous, even though they originated from the process of abstracting or taking away qualities from perceptions until only the common, essential attributes remained.", "title": "Ontology of concepts" }, { "paragraph_id": 21, "text": "The classical theory of concepts, also referred to as the empiricist theory of concepts, is the oldest theory about the structure of concepts (it can be traced back to Aristotle), and was prominently held until the 1970s. The classical theory of concepts says that concepts have a definitional structure. Adequate definitions of the kind required by this theory usually take the form of a list of features. These features must have two important qualities to provide a comprehensive definition. Features entailed by the definition of a concept must be both necessary and sufficient for membership in the class of things covered by a particular concept. A feature is considered necessary if every member of the denoted class has that feature. A feature is considered sufficient if something has all the parts required by the definition. For example, the classic example bachelor is said to be defined by unmarried and man. An entity is a bachelor (by this definition) if and only if it is both unmarried and a man. To check whether something is a member of the class, you compare its qualities to the features in the definition. Another key part of this theory is that it obeys the law of the excluded middle, which means that there are no partial members of a class, you are either in or out.", "title": "Notable theories on the structure of concepts" }, { "paragraph_id": 22, "text": "The classical theory persisted for so long unquestioned because it seemed intuitively correct and has great explanatory power. It can explain how concepts would be acquired, how we use them to categorize and how we use the structure of a concept to determine its referent class. In fact, for many years it was one of the major activities in philosophy—concept analysis. Concept analysis is the act of trying to articulate the necessary and sufficient conditions for the membership in the referent class of a concept. For example, Shoemaker's classic \"Time Without Change\" explored whether the concept of the flow of time can include flows where no changes take place, though change is usually taken as a definition of time.", "title": "Notable theories on the structure of concepts" }, { "paragraph_id": 23, "text": "Given that most later theories of concepts were born out of the rejection of some or all of the classical theory, it seems appropriate to give an account of what might be wrong with this theory. In the 20th century, philosophers such as Wittgenstein and Rosch argued against the classical theory. There are six primary arguments summarized as follows:", "title": "Notable theories on the structure of concepts" }, { "paragraph_id": 24, "text": "Prototype theory came out of problems with the classical view of conceptual structure. Prototype theory says that concepts specify properties that members of a class tend to possess, rather than must possess. Wittgenstein, Rosch, Mervis, Berlin, Anglin, and Posner are a few of the key proponents and creators of this theory. Wittgenstein describes the relationship between members of a class as family resemblances. There are not necessarily any necessary conditions for membership; a dog can still be a dog with only three legs. This view is particularly supported by psychological experimental evidence for prototypicality effects. Participants willingly and consistently rate objects in categories like 'vegetable' or 'furniture' as more or less typical of that class. It seems that our categories are fuzzy psychologically, and so this structure has explanatory power. We can judge an item's membership of the referent class of a concept by comparing it to the typical member—the most central member of the concept. If it is similar enough in the relevant ways, it will be cognitively admitted as a member of the relevant class of entities. Rosch suggests that every category is represented by a central exemplar which embodies all or the maximum possible number of features of a given category. Lech, Gunturkun, and Suchan explain that categorization involves many areas of the brain. Some of these are: visual association areas, prefrontal cortex, basal ganglia, and temporal lobe.", "title": "Notable theories on the structure of concepts" }, { "paragraph_id": 25, "text": "The Prototype perspective is proposed as an alternative view to the Classical approach. While the Classical theory requires an all-or-nothing membership in a group, prototypes allow for more fuzzy boundaries and are characterized by attributes. Lakoff stresses that experience and cognition are critical to the function of language, and Labov's experiment found that the function that an artifact contributed to what people categorized it as. For example, a container holding mashed potatoes versus tea swayed people toward classifying them as a bowl and a cup, respectively. This experiment also illuminated the optimal dimensions of what the prototype for \"cup\" is.", "title": "Notable theories on the structure of concepts" }, { "paragraph_id": 26, "text": "Prototypes also deal with the essence of things and to what extent they belong to a category. There have been a number of experiments dealing with questionnaires asking participants to rate something according to the extent to which it belongs to a category. This question is contradictory to the Classical Theory because something is either a member of a category or is not. This type of problem is paralleled in other areas of linguistics such as phonology, with an illogical question such as \"is /i/ or /o/ a better vowel?\" The Classical approach and Aristotelian categories may be a better descriptor in some cases.", "title": "Notable theories on the structure of concepts" }, { "paragraph_id": 27, "text": "Theory-theory is a reaction to the previous two theories and develops them further. This theory postulates that categorization by concepts is something like scientific theorizing. Concepts are not learned in isolation, but rather are learned as a part of our experiences with the world around us. In this sense, concepts' structure relies on their relationships to other concepts as mandated by a particular mental theory about the state of the world. How this is supposed to work is a little less clear than in the previous two theories, but is still a prominent and notable theory. This is supposed to explain some of the issues of ignorance and error that come up in prototype and classical theories as concepts that are structured around each other seem to account for errors such as whale as a fish (this misconception came from an incorrect theory about what a whale is like, combining with our theory of what a fish is). When we learn that a whale is not a fish, we are recognizing that whales don't in fact fit the theory we had about what makes something a fish. Theory-theory also postulates that people's theories about the world are what inform their conceptual knowledge of the world. Therefore, analysing people's theories can offer insights into their concepts. In this sense, \"theory\" means an individual's mental explanation rather than scientific fact. This theory criticizes classical and prototype theory as relying too much on similarities and using them as a sufficient constraint. It suggests that theories or mental understandings contribute more to what has membership to a group rather than weighted similarities, and a cohesive category is formed more by what makes sense to the perceiver. Weights assigned to features have shown to fluctuate and vary depending on context and experimental task demonstrated by Tversky. For this reason, similarities between members may be collateral rather than causal.", "title": "Notable theories on the structure of concepts" }, { "paragraph_id": 28, "text": "According to the theory of ideasthesia (or \"sensing concepts\"), activation of a concept may be the main mechanism responsible for the creation of phenomenal experiences. Therefore, understanding how the brain processes concepts may be central to solving the mystery of how conscious experiences (or qualia) emerge within a physical system e.g., the sourness of the sour taste of lemon. This question is also known as the hard problem of consciousness. Research on ideasthesia emerged from research on synesthesia where it was noted that a synesthetic experience requires first an activation of a concept of the inducer. Later research expanded these results into everyday perception.", "title": "Ideasthesia" }, { "paragraph_id": 29, "text": "There is a lot of discussion on the most effective theory in concepts. Another theory is semantic pointers, which use perceptual and motor representations and these representations are like symbols.", "title": "Ideasthesia" }, { "paragraph_id": 30, "text": "The term \"concept\" is traced back to 1554–60 (Latin conceptum – \"something conceived\").", "title": "Etymology" } ]	A concept is defined as an abstract idea. It is understood to be a fundamental building block underlying principles, thoughts and beliefs. Concepts play an important role in all aspects of cognition. As such, concepts are studied within such disciplines as linguistics, psychology, and philosophy, and these disciplines are interested in the logical and psychological structure of concepts, and how they are put together to form thoughts and sentences. The study of concepts has served as an important flagship of an emerging interdisciplinary approach, cognitive science. In contemporary philosophy, three understandings of a concept prevail: mental representations, such that a concept is an entity that exists in the mind abilities peculiar to cognitive agents Fregean senses, abstract objects rather than a mental object or a mental state Concepts are classified into a hierarchy, higher levels of which are termed "superordinate" and lower levels termed "subordinate". Additionally, there is the "basic" or "middle" level at which people will most readily categorize a concept. For example, a basic-level concept would be "chair", with its superordinate, "furniture", and its subordinate, "easy chair". Concepts may be exact, or inexact. When the mind makes a generalization such as the concept of tree, it extracts similarities from numerous examples; the simplification enables higher-level thinking. A concept is instantiated (reified) by all of its actual or potential instances, whether these are things in the real world or other ideas. Concepts are studied as components of human cognition in the cognitive science disciplines of linguistics, psychology, and philosophy, where an ongoing debate asks whether all cognition must occur through concepts. Concepts are regularly formalized in mathematics, computer science, databases and artificial intelligence. Examples of specific high-level conceptual classes in these fields include classes, schema or categories. In informal use the word concept often just means any idea.	2001-11-02T20:47:14Z	2023-12-20T07:12:08Z	[ "Template:Main article", "Template:Citation needed", "Template:Div col", "Template:InPho", "Template:ISBN", "Template:Cite web", "Template:EB1911 poster", "Template:Philosophy of mind", "Template:Short description", "Template:Other uses", "Template:Main", "Template:Reflist", "Template:Wiktionary", "Template:Cite SEP", "Template:Cite IEP", "Template:See also", "Template:Div col end", "Template:Cite journal", "Template:Refbegin", "Template:PhilPapers", "Template:Philosophy of language", "Template:Authority control", "Template:Blockquote", "Template:Cite book", "Template:Cite encyclopedia", "Template:Refend" ]	https://en.wikipedia.org/wiki/Concept
6,979	Cell Cycle	Cell Cycle is a biweekly peer-reviewed scientific journal covering all aspects of cell biology. It was established in 2002 with Mikhail V. Blagosklonny (Roswell Park Comprehensive Cancer Center) as founding editor-in-chief. Originally published bimonthly, it is now published biweekly. The journal is abstracted and indexed in: According to the Journal Citation Reports, the journal has a 2017 impact factor of 3.304.	[ { "paragraph_id": 0, "text": "Cell Cycle is a biweekly peer-reviewed scientific journal covering all aspects of cell biology. It was established in 2002 with Mikhail V. Blagosklonny (Roswell Park Comprehensive Cancer Center) as founding editor-in-chief. Originally published bimonthly, it is now published biweekly.", "title": "" }, { "paragraph_id": 1, "text": "The journal is abstracted and indexed in:", "title": "Abstracting and indexing" }, { "paragraph_id": 2, "text": "According to the Journal Citation Reports, the journal has a 2017 impact factor of 3.304.", "title": "Abstracting and indexing" }, { "paragraph_id": 3, "text": "", "title": "External links" } ]	Cell Cycle is a biweekly peer-reviewed scientific journal covering all aspects of cell biology. It was established in 2002 with Mikhail V. Blagosklonny as founding editor-in-chief. Originally published bimonthly, it is now published biweekly.	2001-11-03T14:05:06Z	2023-10-15T06:13:33Z	[ "Template:Official website", "Template:Biology-journal-stub", "Template:About", "Template:Use dmy dates", "Template:Infobox journal", "Template:Columns-list", "Template:Reflist", "Template:Cite book" ]	https://en.wikipedia.org/wiki/Cell_Cycle
6,982	List of classical music competitions	European Classical music has long relied on music competitions to provide a public forum that identifies the strongest players and contributes to the establishment of their professional careers. This is a list of current competitions in classical music, with each competition and reference link given only once. Many offer competitions across a range of categories and in these cases they are listed under "General/mixed". Competitions with age restrictions are listed under "Young musicians". International Music Competition	[ { "paragraph_id": 0, "text": "European Classical music has long relied on music competitions to provide a public forum that identifies the strongest players and contributes to the establishment of their professional careers. This is a list of current competitions in classical music, with each competition and reference link given only once. Many offer competitions across a range of categories and in these cases they are listed under \"General/mixed\". Competitions with age restrictions are listed under \"Young musicians\".", "title": "" }, { "paragraph_id": 1, "text": "International Music Competition", "title": "Piano/keyboard" } ]	European Classical music has long relied on music competitions to provide a public forum that identifies the strongest players and contributes to the establishment of their professional careers. This is a list of current competitions in classical music, with each competition and reference link given only once. Many offer competitions across a range of categories and in these cases they are listed under "General/mixed". Competitions with age restrictions are listed under "Young musicians".	2001-11-02T23:49:37Z	2023-12-02T09:44:53Z	[ "Template:Curlie", "Template:Short description", "Template:Use dmy dates", "Template:Reflist", "Template:Dead link", "Template:Cite book", "Template:Cite news", "Template:Cite encyclopedia", "Template:Multiple issues", "Template:Cite web", "Template:Webarchive", "Template:Cl", "Template:Cite journal" ]	https://en.wikipedia.org/wiki/List_of_classical_music_competitions
6,984	Colin Powell	Colin Luther Powell (/ˈkoʊlɪn ˈpaʊəl/ KOH-lin POW-əl; April 5, 1937 – October 18, 2021) was an American politician, statesman, diplomat, and United States Army officer who was the 65th United States secretary of state from 2001 to 2005. He was the first Black secretary of state. He was the 15th United States national security advisor from 1987 to 1989, and the 12th chairman of the Joint Chiefs of Staff from 1989 to 1993. Powell was born in New York City in 1937 to parents who immigrated from Jamaica. He was raised in the South Bronx and educated in the New York City public schools, earning a bachelor's degree in geology from the City College of New York (CCNY). He also participated in ROTC (Army Reserve Officer Training Corps) at CCNY and received a commission as an Army second lieutenant on graduation in June 1958. He was a professional soldier for 35 years, holding many command and staff positions and rising to the rank of four-star general. He was commander of the U.S. Army Forces Command in 1989. Powell's last military assignment, from October 1989 to September 1993, was as Joint Chiefs of Staff chairman, the highest military position in the United States Department of Defense. During this time, he oversaw twenty-eight crises, including the invasion of Panama in 1989 and Operation Desert Storm in the Persian Gulf War against Iraq in 1990–1991. He formulated the Powell Doctrine, which limits American military action unless it satisfies criteria regarding American national security interests, overwhelming force, and widespread public support. He served as secretary of state under Republican president George W. Bush. As secretary of state, Powell gave a presentation to the United Nations Security Council regarding the rationale for the Iraq War, but he later admitted that the speech contained substantial inaccuracies. He was forced to resign after Bush was reelected in 2004. In 1995, Powell wrote his autobiography, My American Journey, and then in retirement another book, It Worked for Me, Lessons in Life and Leadership (2012). He pursued a career as a public speaker, addressing audiences across the country and abroad. Before his appointment as Secretary of State, he chaired America's Promise. In the 2016 United States presidential election, Powell, who was not a candidate, received three electoral votes from Washington for the office of President of the United States. He won numerous U.S. and foreign military awards and decorations. His civilian awards included the Presidential Medal of Freedom (twice), the Congressional Gold Medal, the Presidential Citizens Medal, and the Secretary's Distinguished Service Award. Powell died from complications of COVID-19 in 2021, while being treated for a form of blood cancer that damaged his immune system. Colin Luther Powell was born on April 5, 1937, in Harlem, a neighborhood in the New York City borough of Manhattan. He was born to Jamaican immigrants Maud Ariel (née McKoy) and Luther Theophilus Powell. His parents were both of mixed African and Scottish ancestry. Luther worked as a shipping clerk and Maud as a seamstress. Powell was raised in the South Bronx and attended the now closed Morris High School, from which he graduated in 1954. While at school, Powell worked at a local baby furniture store, where he picked up Yiddish from the Eastern European Jewish shopkeepers and some of the customers. He also served as a Shabbos goy, helping Orthodox families with needed tasks on the Sabbath. He received a bachelor of science degree in geology from the City College of New York in 1958 and said that he was a "C average" student. "I wasn't doing well in civil engineering". While at CCNY, Powell shifted his study focus to ROTC and became a "straight A student" in this discipline. The City College of New York (established as 'The Free Academy' in 1847) is the founding institution of the City University of New York.. Powell also graduated from George Washington University with an MBA in 1971 and an honorary doctor of public service in 1990. He held the distinction of being the first chairman to attain his commission through the ROTC. Despite his parents' pronunciation of his name as /ˈkɒlɪn/ (KOLL-in), Powell pronounced his name /ˈkoʊlɪn/ (KOHL-in) from childhood on after the World War II flyer Colin P. Kelly Jr. Powell was a professional soldier for thirty-five years, holding a variety of command and staff positions and rising to the rank of general. While attending the City College of New York, Powell joined the Reserve Officers' Training Corps (ROTC). He described the experience as one of the happiest experiences of his life. According to Powell: It was only once I was in college, about six months into college when I found something that I liked, and that was ROTC, Reserve Officer Training Corps in the military. And I not only liked it, but I was pretty good at it. That's what you really have to look for in life, something that you like, and something that you think you're pretty good at. And if you can put those two things together, then you're on the right track, and just drive on. As a cadet, Powell joined the Pershing Rifles, the ROTC fraternal organization and drill team begun by General John Pershing. Upon graduation, he received a commission as an Army second lieutenant; at this time, the Army was newly desegregated (see: Executive Order 9981). He underwent training in the state of Georgia, where he was refused service in bars and restaurants because of the color of his skin. After attending basic training at Fort Benning, Powell was assigned to the 48th Infantry, in West Germany, as a platoon leader. From 1960 to 1962, he served as group liaison officer, company executive officer, and commander of Company A, 1st Battle Group, 4th Infantry, 2nd Infantry Brigade, 5th Infantry Division (Mechanized) at Fort Devens, Massachusetts. Captain Powell served a tour in Vietnam as a South Vietnamese Army (ARVN) advisor from 1962 to 1963. While on patrol in a Viet Cong-held area, he was wounded by stepping on a punji stake. The large infection made it difficult for him to walk, and caused his foot to swell for a short time, shortening his first tour. Powell returned to Vietnam as a major in 1968, serving as assistant chief of staff of operations for the 23rd (Americal) Infantry Division. During the second tour in Vietnam he was decorated with the Soldier's Medal for bravery after he survived a helicopter crash and single-handedly rescued three others, including division commander Major General Charles M. Gettys, from the burning wreckage. Soldiers actively hunted, herded, and killed elderly people, children, infants, and raped women while other Soldiers [sic] looked on and did nothing to stop the massacre. An estimated 350 to 500 unarmed civilians died in My Lai ... MAJ Colin Powell, a recently assigned Deputy G3, investigated the allegations described in the [Glen] letter. He proved unable to uncover either wide-spread unnecessary killings, war crimes, or any facts related to My Lai ... Powell was charged with investigating a detailed letter by 11th Light Infantry Brigade soldier Tom Glen, which backed up rumored allegations of the 1968 Mỹ Lai massacre. Powell wrote: "In direct refutation of this portrayal is the fact that relations between American soldiers and the Vietnamese people are excellent." Later, Powell's assessment would be described as whitewashing the news of the massacre, and questions would continue to remain undisclosed to the public. In May 2004, Powell said to television and radio host Larry King, "I was in a unit that was responsible for My Lai. I got there after My Lai happened. So, in war, these sorts of horrible things happen every now and again, but they are still to be deplored." When he returned to the U.S. from Vietnam in 1971, Powell earned a Master of Business Administration degree from George Washington University in Washington, D.C. He later served a White House Fellowship under President Richard Nixon from 1972 to 1973. During 1975–1976 he attended the National War College, Washington, D.C. In his autobiography, My American Journey, Powell named several officers he served under who inspired and mentored him. As a lieutenant colonel commanding 1st Battalion, 32nd Infantry in South Korea, Powell was very close to his division commander, Major General Henry "Gunfighter" Emerson, whom he regarded as one of the most caring officers he ever met. Emerson insisted his troops train at night to fight a possible North Korean attack, and made them repeatedly watch the television film Brian's Song to promote racial harmony. Powell always professed that what set Emerson apart was his great love of his soldiers and concern for their welfare. After a race riot occurred, in which African-American soldiers almost killed a white officer, Powell was charged by Emerson to crack down on black militants; Powell's efforts led to the discharge of one soldier, and other efforts to reduce racial tensions. During 1976–1977 he commanded the 2nd Brigade of the 101st Airborne Division. Powell subsequently served as the junior military assistant to deputy secretaries of defense Charles Duncan and Graham Claytor, receiving a promotion to brigadier general on June 1, 1979. At the ceremony, he received from Secretary Harold Brown's protocol officer, Stuart Purviance a framed quotation by President Abraham Lincoln. The quote was "I can make a brigadier general in five minutes. But it's not so easy to replace one hundred ten horses." Taped to the back of the frame was an envelope with instructions that it not be opened for ten years. When Powell opened the note in 1989, after he had become Chairman of the Joint Chiefs of Staff, he read Purviance's prediction that Powell would become Chief of Staff of the United States Army. Powell wrote that he kept the Lincoln quote as a reminder to remain humble despite his rank and position. Powell retained his role as the now-senior military assistant into the presidency of Ronald Reagan, serving under Claytor's successor as deputy secretary of defense, Frank Carlucci. Powell and Carlucci formed a close friendship, referring to each by first names in private, as Powell refused any sort of first-name basis in an official capacity. It was on Powell's advice that newly-elected President Ronald Reagan presented Roy Benavidez the Medal of Honor; Benavidez had received the Distinguished Service Cross, which his commander argued should be upgraded, but army officials believed there was no living eyewitness to testify to Benavidez's heroism. A soldier who had been present during the action in question learned in July 1980 of the effort to upgrade Benavidez's medal and provided the necessary sworn statement; the upgrade to the Medal of Honor was approved in December 1980. Powell also declined an offer from Secretary of the Army John O. Marsh Jr. to be his under secretary due to his reluctance to assume a political appointment; James R. Ambrose was selected instead. Intent on attaining a division command, Powell petitioned Carlucci and Army chief of staff Edward C. Meyer for reassignment away from the Pentagon, with Meyer appointing Powell as assistant division commander for operations and training of the 4th Infantry Division at Fort Carson, Colorado under Major General John W. Hudachek. After he left Fort Carson, Powell became the senior military assistant to Secretary of Defense Caspar Weinberger, whom he assisted during the 1983 invasion of Grenada and the 1986 airstrike on Libya. Under Weinberger, Powell was also involved in the unlawful transfer of U.S.-made TOW anti-tank missiles and Hawk anti-aircraft missiles from Israel to Iran as part of the criminal conspiracy that would later become known as the Iran–Contra affair. In November 1985, Powell solicited and delivered to Weinberger a legal assessment that the transfer of Hawk missiles to Israel or Iran, without Congressional notification, would be "a clear violation" of the law. Despite this, thousands of TOW missiles and hundreds of Hawk missiles and spare parts were transferred from Israel to Iran until the venture was exposed in a Lebanese magazine, Ash-Shiraa, in November 1986. According to Iran-Contra Independent Counsel Lawrence E. Walsh, when questioned by Congress, Powell "had given incomplete answers" concerning notes withheld by Weinberger and that the activities of Powell and others in concealing the notes "seemed corrupt enough to meet the new, poorly defined test of obstruction." Following his resignation as Secretary of Defense, Weinberger was indicted on five felony charges, including one count Obstruction of Congress for concealing the notes. Powell was never indicted by the Independent Counsel in connection with the Iran-Contra affair. In 1986, Powell took over the command of V Corps in Frankfurt, Germany, from Robert Lewis "Sam" Wetzel. The next year, he served as United States Deputy National Security Advisor, under Frank Carlucci. Following the Iran–Contra scandal, Powell became, at the age of 49, Ronald Reagan's National Security Advisor, serving from 1987 to 1989 while retaining his Army commission as a lieutenant general. He helped negotiate a number of arms treaties with Mikhail Gorbachev, the leader of the Soviet Union. In April 1989, after his tenure with the National Security Council, Powell was promoted to four-star general under President George H. W. Bush and briefly served as the Commander in Chief, Forces Command (FORSCOM), headquartered at Fort McPherson, Georgia, overseeing all active U.S. Army regulars, U.S. Army Reserve, and National Guard units in the Continental U.S., Hawaii, and Puerto Rico. He became the third general since World War II to reach four-star rank without ever serving as a division commander, joining Dwight D. Eisenhower and Alexander Haig. Later that year, President George H. W. Bush selected him as Chairman of the Joint Chiefs of Staff. Powell's last military assignment, from October 1, 1989, to September 30, 1993, was as the 12th chairman of the Joint Chiefs of Staff, the highest military position in the Department of Defense. At age 52, he became the youngest officer, and first Afro-Caribbean American, to serve in this position. Powell was also the first JCS chair who received his commission through ROTC. During this time, Powell oversaw responses to 28 crises, including the invasion of Panama in 1989 to remove General Manuel Noriega from power and Operation Desert Storm in the 1991 Persian Gulf War. During these events, Powell earned the nickname "the reluctant warrior" – although Powell himself disputed this label, and spoke in favor of the first Bush administration's Gulf War policies. As a military strategist, Powell advocated an approach to military conflicts that maximizes the potential for success and minimizes casualties. A component of this approach is the use of overwhelming force, which he applied to Operation Desert Storm in 1991. His approach has been dubbed the Powell Doctrine. Powell continued as chairman of the JCS into the Clinton presidency. However, as a realist, he considered himself a bad fit for an administration largely made up of liberal internationalists. He clashed with then-U.S. ambassador to the United Nations Madeleine Albright over the Bosnian crisis, as he opposed any military intervention that did not involve U.S. interests. Powell also regularly clashed with Secretary of Defense Leslie Aspin, whom he was initially hesitant to support after Aspin was nominated by President Clinton. During a lunch meeting between Powell and Aspin in preparation of Operation Gothic Serpent, Aspin was more focused on eating salad than listening and paying attention to Powell's presentation on military operations. The incident caused Powell to grow more irritated towards Aspin and led to his early resignation on September 30, 1993. Powell was succeeded temporarily by Vice Chairman of the Joint Chiefs of Staff Admiral David E. Jeremiah, who took the position as Acting Chairman of the Joint Chiefs of Staff. Soon after Powell's resignation, on October 3–4, 1993, the Battle of Mogadishu, the aim of which was to capture Somali warlord Mohamed Farrah Aidid, was initiated and ended in disaster. Powell later defended Aspin, saying in part that he could not fault Aspin for Aspin's decision to remove a Lockheed AC-130 from the list of armaments requested for the operation. Powell took an early resignation from his tenure as Chairman of the Joint Chiefs of Staff on September 30, 1993. The following year President Clinton sent newly-retired Powell, together with former President Jimmy Carter and Senator Sam Nunn, to visit Haiti in an effort to persuade General Raoul Cédras and the ruling junta to abdicate in favor of former Haitian President Aristide, under the threat of an imminent US invasion to remove them by force. Powell status as a retired general well known and respected in Haiti was held to be instrumental in persuading Gen. Cédras. During his chairmanship of the JCS, there was discussion of awarding Powell a fifth star, granting him the rank of General of the Army. But even in the wake of public and Congressional pressure to do so, Clinton-Gore presidential transition team staffers decided against it. Powell retained his role as the now-senior military assistant Powell's experience in military matters made him a very popular figure with both American political parties. Many Democrats admired his moderate stance on military matters, while many Republicans saw him as a great asset associated with the successes of past Republican administrations. Put forth as a potential Democratic vice presidential nominee in the 1992 U.S. presidential election or even potentially replacing Vice President Dan Quayle as the Republican vice presidential nominee, Powell eventually declared himself a Republican and began to campaign for Republican candidates in 1995. He was touted as a possible opponent of Bill Clinton in the 1996 U.S. presidential election, possibly capitalizing on a split conservative vote in Iowa and even leading New Hampshire polls for the GOP nomination, but Powell declined, citing a lack of passion for politics. Powell defeated Clinton 50–38 in a hypothetical match-up proposed to voters in the exit polls conducted on Election Day. Despite not standing in the race, Powell won the Republican New Hampshire Vice-Presidential primary on write-in votes. In 1997, Powell founded America's Promise with the objective of helping children from all socioeconomic sectors. That same year saw the establishment of The Colin L. Powell Center for Leadership and Service. The mission of the center is to "prepare new generations of publicly engaged leaders from populations previously underrepresented in public service and policy circles, to build a strong culture of civic engagement at City College, and to mobilize campus resources to meet pressing community needs and serve the public good." Powell was mentioned as a potential candidate in the 2000 U.S. presidential election, but again decided against running. Once Texas Governor George W. Bush secured the Republican nomination, Powell endorsed him for president and spoke at the 2000 Republican National Convention. Bush won the general election and appointed Powell as secretary of state in 2001. In the electoral college vote count of 2016, Powell received three votes for president from faithless electors from Washington. President-elect George W. Bush named Powell as his nominee to be secretary of state in a ceremony at his ranch in Crawford, Texas on December 16, 2000. This made Powell the first person to formally accept a Cabinet post in the Bush administration, as well the first black United States secretary of state. As secretary of state, Powell was perceived as moderate. Powell was unanimously confirmed by the United States Senate by voice vote on January 20, 2001, and ceremonially sworn in on January 26. Over the course of his tenure he traveled less than any other U.S. Secretary of State in thirty years. This is partly attributed to a letter from former diplomat George F. Kennan, who advised Powell to focus on his duties as the president's principal foreign policy advisor and avoid trips that risked undercutting the duties of the ambassadors. On September 11, 2001, Powell was in Lima, Peru, meeting with President Alejandro Toledo and attending a meeting of foreign ministers of the Organization of American States. After the September 11 attacks, Powell's job became of critical importance in managing the United States of America's relationships with foreign countries to secure a stable coalition in the War on Terrorism. My second purpose today is ... to share with you what the United States knows about Iraq's weapons of mass destruction ... Iraq's behavior demonstrate that Saddam Hussein and his regime have made no effort ... to disarm as required by the international community. Indeed, the facts and Iraq's behavior show that Saddam Hussein and his regime are concealing their efforts to produce more weapons of mass destruction ... every statement I make today is backed up by sources, solid sources. These are not assertions. What we're giving you are facts and conclusions based on solid intelligence. Powell came under fire for his role in building the case for the 2003 invasion of Iraq. A 2004 report by the Iraq Survey Group concluded that the evidence that Powell offered to support the allegation that the Iraqi government possessed weapons of mass destruction (WMDs) was inaccurate. As early as 2000 on the day Powell was nominated to be Secretary of State he told the press "Saddam is sitting on a failed regime that is not going to be around in a few years time". In a press statement on February 24, 2001, Powell had said that sanctions against Iraq had prevented the development of any weapons of mass destruction by Saddam Hussein. Powell favored involving the international community in the invasion, as opposed to a unilateral approach. Powell's chief role was to garner international support for a multi-national coalition to mount the invasion. To this end, Powell addressed a plenary session of the United Nations Security Council on February 5, 2003, to argue in favor of military action. Citing numerous anonymous Iraqi defectors, Powell asserted that "there can be no doubt that Saddam Hussein has biological weapons and the capability to rapidly produce more, many more." Powell also stated that there was "no doubt in my mind" that Saddam was working to obtain key components to produce nuclear weapons. Powell stated that he gave his speech to the UN on "four days' notice". Britain's Channel 4 News reported soon afterwards that a British intelligence dossier that Powell had referred to as a "fine paper" during his presentation had been based on old material and plagiarized an essay by American graduate student Ibrahim al-Marashi. A Senate report on intelligence failures would later detail the intense debate that went on behind the scenes on what to include in Powell's speech. State Department analysts had found dozens of factual problems in drafts of the speech. Some of the claims were taken out, but others were left in, such as claims based on the yellowcake forgery. The administration came under fire for having acted on faulty intelligence, particularly that which was single-sourced to the informant known as Curveball. Powell later recounted how Vice President Dick Cheney had joked with him before he gave the speech, telling him, "You've got high poll ratings; you can afford to lose a few points." Powell's longtime aide-de-camp and Chief of Staff from 1989 to 2003, Colonel Lawrence Wilkerson, later characterized Cheney's view of Powell's mission as to "go up there and sell it, and we'll have moved forward a peg or two. Fall on your damn sword and kill yourself, and I'll be happy, too." In September 2005, Powell was asked about the speech during an interview with Barbara Walters and responded that it was a "blot" on his record. He went on to say, "It will always be a part of my record. It was painful. It's painful now." Wilkerson later said that he inadvertently participated in a hoax on the American people in preparing Powell's erroneous testimony before the United Nations Security Council. As recounted in Soldier: The Life of Colin Powell, in 2001 before 9/11, Richard A. Clarke, a National Security Council holdover from the Clinton administration, pushed the new Bush administration for action against al-Qaeda in Afghanistan, a move opposed by Paul Wolfowitz who advocated for the creation of a "U.S.-protected, opposition-run 'liberated' enclave around the southern Iraqi city of Basra". Powell referred to Wolfowitz and other top members of Donald Rumsfeld's staff "as the 'JINSA crowd,' " in reference to the pro-Israel Jewish Institute for National Security Affairs. Again invoking "the JINSA crowd" Powell also attributed the decision to go to war in Iraq in 2003 to the neoconservative belief that regime change in Baghdad "was a first and necessary stop on the road to peace in Jerusalem." A review of Soldier by Tim Rutten criticized Powell's remarks as a "blot on his record", accusing Powell of slandering "neoconservatives in the Defense Department – nearly all of them Jews" with "old and wholly unmeritorious allegations of dual loyalty". A 2007 article about fears that Jewish groups "will be accused of driving America into a war with the regime in Tehran" cited the DeYoung biography and quoted JINSA's then-executive director, Thomas Neumann, as "surprised" Powell "would single out a Jewish group when naming those who supported the war." Neumann said, "I am not accusing Powell of anything, but these are words that the antisemites will use in the future". Once Saddam Hussein had been deposed, Powell's renewed role was to once again establish a working international coalition, this time to assist in the rebuilding of post-war Iraq. On September 13, 2004, Powell testified before the Senate Governmental Affairs Committee, acknowledging that the sources who provided much of the information in his February 2003 UN presentation were "wrong" and that it was "unlikely" that any stockpiles of WMDs would be found. Claiming that he was unaware that some intelligence officials questioned the information prior to his presentation, Powell pushed for reform in the intelligence community, including the creation of a national intelligence director who would assure that "what one person knew, everyone else knew". Additionally, Powell was critical of other aspects of U.S. foreign policy in the past, such as its support for the 1973 Chilean coup d'état that deposed the democratically elected president Salvador Allende in favor of Augusto Pinochet. From two separate interviews in 2003, Powell stated in one about the 1973 event: "I can't justify or explain the actions and decisions that were made at that time. It was a different time. There was a great deal of concern about communism in this part of the world. Communism was a threat to the democracies in this part of the world. It was a threat to the United States." In another interview, he also simply stated: "With respect to your earlier comment about Chile in the 1970s and what happened with Mr. Allende, it is not a part of American history that we're proud of." In the Hainan Island incident of April 1, 2001, a United States US EP-3 surveillance aircraft collided mid-air with a Chinese Shenyang J-8 jet fighter over the South China Sea. While somewhat ambiguous, Powell's expression of "very sorry" was accepted as sufficient for the formal apology that China had sought. The incident was nonetheless a serious flare-up in United States-China relations and created negative feelings towards the United States by the Chinese public and increased public feelings of Chinese nationalism. In September 2004, Powell described the Darfur genocide as "genocide", thus becoming the first cabinet member to apply the term "genocide" to events in an ongoing conflict. In November the president "forced Powell to resign", according to Walter LaFeber. Powell announced his resignation as Secretary of State on November 15, 2004, shortly after Bush was reelected. Bush's desire for Powell to resign was communicated to Powell via a phone call by Bush's chief of staff, Andrew Card. The following day, Bush nominated National Security Advisor Condoleezza Rice as Powell's successor. In mid-November, Powell stated that he had seen new evidence suggesting that Iran was adapting missiles for a nuclear delivery system. The accusation came at the same time as the settlement of an agreement between Iran, the IAEA, and the European Union. Although biographer Jeffrey J. Matthews is highly critical of how Powell misled the United Nations Security Council regarding weapons of mass destruction in Iraq, he credits Powell with a series of achievements at the State Department. These include restoration of morale to psychologically demoralized professional diplomats, leadership of the international HIV/AIDS initiative, resolving a crisis with China, and blocking efforts to tie Saddam Hussein to the 9/11 attacks on the United States. After retiring from the role of Secretary of State, Powell returned to private life. In April 2005, he was privately telephoned by Republican senators Lincoln Chafee and Chuck Hagel, at which time Powell expressed reservations and mixed reviews about the nomination of John Bolton as ambassador to the United Nations, but refrained from advising the senators to oppose Bolton (Powell had clashed with Bolton during Bush's first term). The decision was viewed as potentially dealing significant damage to Bolton's chances of confirmation. Bolton was put into the position via a recess appointment because of the strong opposition in the Senate. On April 28, 2005, an opinion piece in The Guardian by Sidney Blumenthal (a former top aide to President Bill Clinton) claimed that Powell was in fact "conducting a campaign" against Bolton because of the acrimonious battles they had had while working together, which among other things had resulted in Powell cutting Bolton out of talks with Iran and Libya after complaints about Bolton's involvement from the British. Blumenthal added that "The foreign relations committee has discovered that Bolton made a highly unusual request and gained access to 10 intercepts by the National Security Agency. Staff members on the committee believe that Bolton was probably spying on Powell, his senior advisors and other officials reporting to him on diplomatic initiatives that Bolton opposed." In September 2005, Powell criticized the response to Hurricane Katrina, and said thousands of people were not properly protected because they were poor, rather than because they were black. On January 5, 2006, he participated in a meeting at the White House of former Secretaries of Defense and State to discuss United States foreign policy with Bush administration officials. In September 2006, Powell sided with more moderate Senate Republicans in supporting more rights for detainees and opposing President Bush's terrorism bill. He backed Senators John Warner, John McCain, and Lindsey Graham in their statement that U.S. military and intelligence personnel in future wars will suffer for abuses committed in 2006 by the U.S. in the name of fighting terrorism. Powell stated that "The world is beginning to doubt the moral basis of our fight against terrorism." In 2007, he joined the board of directors of Steve Case's new company Revolution Health. Powell also served on the Council on Foreign Relations Board of directors. In 2008, Powell served as a spokesperson for National Mentoring Month, a campaign held each January to recruit volunteer mentors for at-risk youth. Soon after Barack Obama's 2008 election, Powell began being mentioned as a possible cabinet member. He was not nominated. In September 2009, Powell advised President Obama against surging U.S. forces in Afghanistan. The president announced the surge the following December. In 2010, Powell joined the Smithsonian advisory council . Together with his wife, Alma Powell, they are the founding donors who offer their support to the museum's capital campaign and Living History campaign. He was an advocate for the National Museum of African American History and Culture. On March 14, 2014, Salesforce.com announced that Powell had joined its board of directors. During his early political career through his tenure within the Joint Chiefs of Staff, Powell was an independent. Powell was a moderate Republican from 1995 until 2021. Many have described Powell as a neoconservative for his foreign policy positions, although Powell has never personally acknowledged the label. In 2021, Powell recanted his status as a Republican following the January 6 United States Capitol attack. The attack moved Powell to call for president Trump's resignation, noting: "I wish he would do what Nixon did and just step down. Somebody ought to go up to him and it's over." Powell also accused Trump of attempting to "overthrow the government", and that Trump's false claims of a stolen election were "dangerous for our democracy". Powell was pro-choice regarding abortion, and expressed some support for an assault weapons ban. He stated in his autobiography that he supported affirmative action that levels the playing field, without giving a leg up to undeserving persons because of racial issues. Powell originally suggested the don't ask, don't tell policy to President Clinton, though he later supported its repeal as proposed by Robert Gates and Admiral Mike Mullen in January 2010, saying "circumstances had changed". Powell gained attention in 2004 when, in a conversation with British Foreign Secretary Jack Straw, he reportedly referred to neoconservatives within the Bush administration as "fucking crazies". In a September 2006 letter to John McCain, Powell expressed opposition to President Bush's push for military tribunals of those formerly and currently classified as enemy combatants. Specifically, he objected to the effort in Congress to "redefine Common Article 3 of the Geneva Convention." He also asserted: "The world is beginning to doubt the moral basis of our fight against terrorism." At the 2007 Aspen Ideas Festival in Colorado, Powell stated that he had spent two and a half hours explaining to President Bush "the consequences of going into an Arab country and becoming the occupiers". During this discussion, he insisted that the U.S. appeal to the United Nations first, but if diplomacy failed, he would support the invasion: "I also had to say to him that you are the President, you will have to make the ultimate judgment, and if the judgment is this isn't working and we don't think it is going to solve the problem, then if military action is undertaken I'm with you, I support you." In a 2008 interview on CNN, Powell reiterated his support for the 2003 decision to invade Iraq in the context of his endorsement of Barack Obama, stating: "My role has been very, very straightforward. I wanted to avoid a war. The president [Bush] agreed with me. We tried to do that. We couldn't get it through the U.N. and when the president made the decision, I supported that decision. And I've never blinked from that. I've never said I didn't support a decision to go to war." Powell's position on the Iraq War troop surge of 2007 was less consistent. In December 2006, he expressed skepticism that the strategy would work and whether the U.S. military had enough troops to carry it out successfully. He stated: "I am not persuaded that another surge of troops into Baghdad for the purposes of suppressing this communitarian violence, this civil war, will work." Following his endorsement of Barack Obama in October 2008, however, Powell praised General David Petraeus and U.S. troops, as well as the Iraqi government, concluding that "it's starting to turn around". By mid-2009, he had concluded a surge of U.S. forces in Iraq should have come sooner, perhaps in late 2003. Powell donated the maximum allowable amount to John McCain's campaign in the summer of 2007 and in early 2008, his name was listed as a possible running mate for Republican nominee McCain's bid during the 2008 U.S. presidential election. McCain won the Republican presidential nomination, but the Democrats nominated the first black candidate, Senator Barack Obama of Illinois. On October 19, 2008, Powell announced his endorsement of Obama during a Meet the Press interview, citing "his ability to inspire, because of the inclusive nature of his campaign, because he is reaching out all across America, because of who he is and his rhetorical abilities", in addition to his "style and substance." He additionally referred to Obama as a "transformational figure". Powell further questioned McCain's judgment in appointing Sarah Palin as the vice presidential candidate, stating that despite the fact that she is admired, "now that we have had a chance to watch her for some seven weeks, I don't believe she's ready to be president of the United States, which is the job of the vice president." He said that Obama's choice for vice-president, Joe Biden, was ready to be president. He also added that he was "troubled" by the "false intimations that Obama was Muslim." Powell stated that "[Obama] is a Christian – he's always been a Christian... But the really right answer is, what if he is? Is there something wrong with being a Muslim in this country? The answer's no, that's not America." Powell then mentioned Kareem Rashad Sultan Khan, a Muslim American soldier in the U.S. Army who served and died in the Iraq War. He later stated, "Over the last seven weeks, the approach of the Republican Party has become narrower and narrower [...] I look at these kind of approaches to the campaign, and they trouble me." Powell concluded his Sunday morning talk show comments, "It isn't easy for me to disappoint Sen. McCain in the way that I have this morning, and I regret that [...] I think we need a transformational figure. I think we need a president who is a generational change and that's why I'm supporting Barack Obama, not out of any lack of respect or admiration for Sen. John McCain." Later in a December 12, 2008, CNN interview with Fareed Zakaria, Powell reiterated his belief that during the last few months of the campaign, Palin pushed the Republican party further to the right and had a polarizing impact on it. When asked why he was still a Republican on Meet the Press he said, "I'm still a Republican. And I think the Republican Party needs me more than the Democratic Party needs me. And you can be a Republican and still feel strongly about issues such as immigration, and improving our education system, and doing something about some of the social problems that exist in our society and our country. I don't think there's anything inconsistent with this." In a July 2009 CNN interview with John King, Powell expressed concern over President Obama increasing the size of the federal government and the size of the federal budget deficit. In September 2010, he criticized the Obama administration for not focusing "like a razor blade" on the economy and job creation. Powell reiterated that Obama was a "transformational figure." In a video that aired on CNN.com in November 2011, Colin Powell said in reference to Barack Obama, "many of his decisions have been quite sound. The financial system was put back on a stable basis." On October 25, 2012, 12 days before the presidential election, he gave his endorsement to President Obama for re-election during a broadcast of CBS This Morning. He considered the administration to have had success and achieved progress in foreign and domestic policy arenas. As additional reasons for his endorsement, Powell cited the changing positions and perceived lack of thoughtfulness of Mitt Romney on foreign affairs, and a concern for the validity of Romney's economic plans. In an interview with ABC's Diane Sawyer and George Stephanopoulos during ABC's coverage of President Obama's second inauguration, Powell criticized members of the Republican Party who spread "things that demonize the president". He called on GOP leaders to publicly denounce such talk. Powell was very vocal on the state of the Republican Party. Speaking at a Washington Ideas forum in early October 2015, he warned the audience that the Republican Party had begun a move to the fringe right, lessening the chances of a Republican White House in the future. He also remarked on Republican presidential candidate Donald Trump's statements regarding immigrants, noting that there were many immigrants working in Trump hotels. In March 2016, Powell denounced the "nastiness" of the 2016 Republican primaries during an interview on CBS This Morning. He compared the race to reality television, and stated that the campaign had gone "into the mud." In August 2016, Powell accused the Hillary Clinton campaign of trying to pin her email controversy on him. Speaking to People magazine, Powell said, "The truth is, she was using [the private email server] for a year before I sent her a memo telling her what I did." On September 13, 2016, emails were obtained that revealed Powell's private communications regarding both Donald Trump and Hillary Clinton. Powell privately reiterated his comments regarding Clinton's email scandal, writing, "I have told Hillary's minions repeatedly that they are making a mistake trying to drag me in, yet they still try," and complaining that "Hillary's mafia keeps trying to suck me into it" in another email. In another email discussing Clinton's controversy, Powell said she should have told everyone what she did "two years ago", and said that she has not "been covering herself with glory." Writing on the 2012 Benghazi attack controversy surrounding Clinton, Powell said to then U.S. Ambassador Susan Rice, "Benghazi is a stupid witch hunt." Commenting on Clinton in a general sense, he mused that "Everything HRC touches she kind of screws up with hubris", and in another email stated "I would rather not have to vote for her, although she is a friend I respect." Powell called Donald Trump a "national disgrace", with "no sense of shame". He wrote of Trump's role in the birther movement, which he called "racist". He suggested the media ignore Trump: "To go on and call him an idiot just emboldens him." The emails were obtained by the media as the result of a hack. Powell endorsed Clinton on October 25, 2016, stating it was "because I think she's qualified, and the other gentleman is not qualified". Despite not running in the election, Powell received three electoral votes for president from faithless electors in Washington who had pledged to vote for Clinton, coming in third overall. After Barack Obama, he was the second black person to receive electoral votes in a presidential election. In an interview in October 2019, Powell warned that the GOP needed to "get a grip" and put the country before their party, standing up to then president Trump rather than worrying about political fallout. He said: "When they see things that are not right, they need to say something about it because our foreign policy is in shambles right now, in my humble judgment, and I see things happening that are hard to understand." On June 7, 2020, Powell announced he would be voting for former Vice President Joe Biden in the 2020 United States presidential election. In August, Powell delivered a speech in support of Biden's candidacy at the 2020 Democratic National Convention. In January 2021, after the Capitol building was attacked by Trump supporters, Powell told CNN: "I can no longer call myself a fellow Republican." Powell married Alma Johnson on August 25, 1962. Their son, Michael Powell, was the chairman of the Federal Communications Commission (FCC) from 2001 to 2005. Their daughters are Linda Powell, an actress, and Annemarie Powell. As a hobby, Powell restored old Volvo and Saab automobiles. In 2013, he faced questions about his relationship with the Romanian diplomat Corina Crețu, after a hacked AOL email account had been made public. He acknowledged a "very personal" email relationship but denied further involvement. He was an Episcopalian. On October 18, 2021, Powell, who was being treated for multiple myeloma, died at Walter Reed National Military Medical Center of complications from COVID-19 at the age of 84. He had been vaccinated, but his myeloma compromised his immune system; he also had early-stage Parkinson's disease. President Joe Biden and four of the five living former presidents issued statements calling Powell as an American hero. Donald Trump released a statement saying "He made plenty of mistakes, but anyway, may he rest in peace!" and referred to him as a "classic RINO". Present at the funeral service at the Washington National Cathedral were President Biden and former presidents Barack Obama and George W. Bush, along with First Lady Jill Biden and former first ladies Michelle Obama, Laura Bush, and Hillary Clinton (also representing her husband, former President Bill Clinton, who was unable to attend following treatment for sepsis) as well as many other dignitaries. Powell is buried at Arlington National Cemetery in Section 60, Grave 11917. Powell's civilian awards include two Presidential Medals of Freedom (the second with distinction), the Congressional Gold Medal, and the Ronald Reagan Freedom Award.	[ { "paragraph_id": 0, "text": "Colin Luther Powell (/ˈkoʊlɪn ˈpaʊəl/ KOH-lin POW-əl; April 5, 1937 – October 18, 2021) was an American politician, statesman, diplomat, and United States Army officer who was the 65th United States secretary of state from 2001 to 2005. He was the first Black secretary of state. He was the 15th United States national security advisor from 1987 to 1989, and the 12th chairman of the Joint Chiefs of Staff from 1989 to 1993.", "title": "" }, { "paragraph_id": 1, "text": "Powell was born in New York City in 1937 to parents who immigrated from Jamaica. He was raised in the South Bronx and educated in the New York City public schools, earning a bachelor's degree in geology from the City College of New York (CCNY). He also participated in ROTC (Army Reserve Officer Training Corps) at CCNY and received a commission as an Army second lieutenant on graduation in June 1958. He was a professional soldier for 35 years, holding many command and staff positions and rising to the rank of four-star general. He was commander of the U.S. Army Forces Command in 1989.", "title": "" }, { "paragraph_id": 2, "text": "Powell's last military assignment, from October 1989 to September 1993, was as Joint Chiefs of Staff chairman, the highest military position in the United States Department of Defense. During this time, he oversaw twenty-eight crises, including the invasion of Panama in 1989 and Operation Desert Storm in the Persian Gulf War against Iraq in 1990–1991. He formulated the Powell Doctrine, which limits American military action unless it satisfies criteria regarding American national security interests, overwhelming force, and widespread public support. He served as secretary of state under Republican president George W. Bush. As secretary of state, Powell gave a presentation to the United Nations Security Council regarding the rationale for the Iraq War, but he later admitted that the speech contained substantial inaccuracies. He was forced to resign after Bush was reelected in 2004.", "title": "" }, { "paragraph_id": 3, "text": "In 1995, Powell wrote his autobiography, My American Journey, and then in retirement another book, It Worked for Me, Lessons in Life and Leadership (2012). He pursued a career as a public speaker, addressing audiences across the country and abroad. Before his appointment as Secretary of State, he chaired America's Promise. In the 2016 United States presidential election, Powell, who was not a candidate, received three electoral votes from Washington for the office of President of the United States. He won numerous U.S. and foreign military awards and decorations. His civilian awards included the Presidential Medal of Freedom (twice), the Congressional Gold Medal, the Presidential Citizens Medal, and the Secretary's Distinguished Service Award. Powell died from complications of COVID-19 in 2021, while being treated for a form of blood cancer that damaged his immune system.", "title": "" }, { "paragraph_id": 4, "text": "Colin Luther Powell was born on April 5, 1937, in Harlem, a neighborhood in the New York City borough of Manhattan. He was born to Jamaican immigrants Maud Ariel (née McKoy) and Luther Theophilus Powell. His parents were both of mixed African and Scottish ancestry. Luther worked as a shipping clerk and Maud as a seamstress. Powell was raised in the South Bronx and attended the now closed Morris High School, from which he graduated in 1954.", "title": "Early life" }, { "paragraph_id": 5, "text": "While at school, Powell worked at a local baby furniture store, where he picked up Yiddish from the Eastern European Jewish shopkeepers and some of the customers. He also served as a Shabbos goy, helping Orthodox families with needed tasks on the Sabbath. He received a bachelor of science degree in geology from the City College of New York in 1958 and said that he was a \"C average\" student. \"I wasn't doing well in civil engineering\". While at CCNY, Powell shifted his study focus to ROTC and became a \"straight A student\" in this discipline. The City College of New York (established as 'The Free Academy' in 1847) is the founding institution of the City University of New York.. Powell also graduated from George Washington University with an MBA in 1971 and an honorary doctor of public service in 1990.", "title": "Early life" }, { "paragraph_id": 6, "text": "He held the distinction of being the first chairman to attain his commission through the ROTC.", "title": "Early life" }, { "paragraph_id": 7, "text": "Despite his parents' pronunciation of his name as /ˈkɒlɪn/ (KOLL-in), Powell pronounced his name /ˈkoʊlɪn/ (KOHL-in) from childhood on after the World War II flyer Colin P. Kelly Jr.", "title": "Early life" }, { "paragraph_id": 8, "text": "Powell was a professional soldier for thirty-five years, holding a variety of command and staff positions and rising to the rank of general.", "title": "Military career" }, { "paragraph_id": 9, "text": "While attending the City College of New York, Powell joined the Reserve Officers' Training Corps (ROTC). He described the experience as one of the happiest experiences of his life. According to Powell:", "title": "Military career" }, { "paragraph_id": 10, "text": "It was only once I was in college, about six months into college when I found something that I liked, and that was ROTC, Reserve Officer Training Corps in the military. And I not only liked it, but I was pretty good at it. That's what you really have to look for in life, something that you like, and something that you think you're pretty good at. And if you can put those two things together, then you're on the right track, and just drive on.", "title": "Military career" }, { "paragraph_id": 11, "text": "As a cadet, Powell joined the Pershing Rifles, the ROTC fraternal organization and drill team begun by General John Pershing.", "title": "Military career" }, { "paragraph_id": 12, "text": "Upon graduation, he received a commission as an Army second lieutenant; at this time, the Army was newly desegregated (see: Executive Order 9981). He underwent training in the state of Georgia, where he was refused service in bars and restaurants because of the color of his skin. After attending basic training at Fort Benning, Powell was assigned to the 48th Infantry, in West Germany, as a platoon leader. From 1960 to 1962, he served as group liaison officer, company executive officer, and commander of Company A, 1st Battle Group, 4th Infantry, 2nd Infantry Brigade, 5th Infantry Division (Mechanized) at Fort Devens, Massachusetts.", "title": "Military career" }, { "paragraph_id": 13, "text": "Captain Powell served a tour in Vietnam as a South Vietnamese Army (ARVN) advisor from 1962 to 1963. While on patrol in a Viet Cong-held area, he was wounded by stepping on a punji stake. The large infection made it difficult for him to walk, and caused his foot to swell for a short time, shortening his first tour.", "title": "Military career" }, { "paragraph_id": 14, "text": "Powell returned to Vietnam as a major in 1968, serving as assistant chief of staff of operations for the 23rd (Americal) Infantry Division. During the second tour in Vietnam he was decorated with the Soldier's Medal for bravery after he survived a helicopter crash and single-handedly rescued three others, including division commander Major General Charles M. Gettys, from the burning wreckage.", "title": "Military career" }, { "paragraph_id": 15, "text": "Soldiers actively hunted, herded, and killed elderly people, children, infants, and raped women while other Soldiers [sic] looked on and did nothing to stop the massacre. An estimated 350 to 500 unarmed civilians died in My Lai ... MAJ Colin Powell, a recently assigned Deputy G3, investigated the allegations described in the [Glen] letter. He proved unable to uncover either wide-spread unnecessary killings, war crimes, or any facts related to My Lai ...", "title": "Military career" }, { "paragraph_id": 16, "text": "Powell was charged with investigating a detailed letter by 11th Light Infantry Brigade soldier Tom Glen, which backed up rumored allegations of the 1968 Mỹ Lai massacre. Powell wrote: \"In direct refutation of this portrayal is the fact that relations between American soldiers and the Vietnamese people are excellent.\" Later, Powell's assessment would be described as whitewashing the news of the massacre, and questions would continue to remain undisclosed to the public. In May 2004, Powell said to television and radio host Larry King, \"I was in a unit that was responsible for My Lai. I got there after My Lai happened. So, in war, these sorts of horrible things happen every now and again, but they are still to be deplored.\"", "title": "Military career" }, { "paragraph_id": 17, "text": "When he returned to the U.S. from Vietnam in 1971, Powell earned a Master of Business Administration degree from George Washington University in Washington, D.C. He later served a White House Fellowship under President Richard Nixon from 1972 to 1973. During 1975–1976 he attended the National War College, Washington, D.C.", "title": "Military career" }, { "paragraph_id": 18, "text": "In his autobiography, My American Journey, Powell named several officers he served under who inspired and mentored him. As a lieutenant colonel commanding 1st Battalion, 32nd Infantry in South Korea, Powell was very close to his division commander, Major General Henry \"Gunfighter\" Emerson, whom he regarded as one of the most caring officers he ever met. Emerson insisted his troops train at night to fight a possible North Korean attack, and made them repeatedly watch the television film Brian's Song to promote racial harmony. Powell always professed that what set Emerson apart was his great love of his soldiers and concern for their welfare. After a race riot occurred, in which African-American soldiers almost killed a white officer, Powell was charged by Emerson to crack down on black militants; Powell's efforts led to the discharge of one soldier, and other efforts to reduce racial tensions. During 1976–1977 he commanded the 2nd Brigade of the 101st Airborne Division.", "title": "Military career" }, { "paragraph_id": 19, "text": "Powell subsequently served as the junior military assistant to deputy secretaries of defense Charles Duncan and Graham Claytor, receiving a promotion to brigadier general on June 1, 1979. At the ceremony, he received from Secretary Harold Brown's protocol officer, Stuart Purviance a framed quotation by President Abraham Lincoln. The quote was \"I can make a brigadier general in five minutes. But it's not so easy to replace one hundred ten horses.\" Taped to the back of the frame was an envelope with instructions that it not be opened for ten years. When Powell opened the note in 1989, after he had become Chairman of the Joint Chiefs of Staff, he read Purviance's prediction that Powell would become Chief of Staff of the United States Army. Powell wrote that he kept the Lincoln quote as a reminder to remain humble despite his rank and position.", "title": "Military career" }, { "paragraph_id": 20, "text": "Powell retained his role as the now-senior military assistant into the presidency of Ronald Reagan, serving under Claytor's successor as deputy secretary of defense, Frank Carlucci. Powell and Carlucci formed a close friendship, referring to each by first names in private, as Powell refused any sort of first-name basis in an official capacity. It was on Powell's advice that newly-elected President Ronald Reagan presented Roy Benavidez the Medal of Honor; Benavidez had received the Distinguished Service Cross, which his commander argued should be upgraded, but army officials believed there was no living eyewitness to testify to Benavidez's heroism. A soldier who had been present during the action in question learned in July 1980 of the effort to upgrade Benavidez's medal and provided the necessary sworn statement; the upgrade to the Medal of Honor was approved in December 1980. Powell also declined an offer from Secretary of the Army John O. Marsh Jr. to be his under secretary due to his reluctance to assume a political appointment; James R. Ambrose was selected instead. Intent on attaining a division command, Powell petitioned Carlucci and Army chief of staff Edward C. Meyer for reassignment away from the Pentagon, with Meyer appointing Powell as assistant division commander for operations and training of the 4th Infantry Division at Fort Carson, Colorado under Major General John W. Hudachek.", "title": "Military career" }, { "paragraph_id": 21, "text": "After he left Fort Carson, Powell became the senior military assistant to Secretary of Defense Caspar Weinberger, whom he assisted during the 1983 invasion of Grenada and the 1986 airstrike on Libya. Under Weinberger, Powell was also involved in the unlawful transfer of U.S.-made TOW anti-tank missiles and Hawk anti-aircraft missiles from Israel to Iran as part of the criminal conspiracy that would later become known as the Iran–Contra affair. In November 1985, Powell solicited and delivered to Weinberger a legal assessment that the transfer of Hawk missiles to Israel or Iran, without Congressional notification, would be \"a clear violation\" of the law. Despite this, thousands of TOW missiles and hundreds of Hawk missiles and spare parts were transferred from Israel to Iran until the venture was exposed in a Lebanese magazine, Ash-Shiraa, in November 1986. According to Iran-Contra Independent Counsel Lawrence E. Walsh, when questioned by Congress, Powell \"had given incomplete answers\" concerning notes withheld by Weinberger and that the activities of Powell and others in concealing the notes \"seemed corrupt enough to meet the new, poorly defined test of obstruction.\" Following his resignation as Secretary of Defense, Weinberger was indicted on five felony charges, including one count Obstruction of Congress for concealing the notes. Powell was never indicted by the Independent Counsel in connection with the Iran-Contra affair.", "title": "Military career" }, { "paragraph_id": 22, "text": "In 1986, Powell took over the command of V Corps in Frankfurt, Germany, from Robert Lewis \"Sam\" Wetzel. The next year, he served as United States Deputy National Security Advisor, under Frank Carlucci.", "title": "Military career" }, { "paragraph_id": 23, "text": "Following the Iran–Contra scandal, Powell became, at the age of 49, Ronald Reagan's National Security Advisor, serving from 1987 to 1989 while retaining his Army commission as a lieutenant general. He helped negotiate a number of arms treaties with Mikhail Gorbachev, the leader of the Soviet Union.", "title": "Military career" }, { "paragraph_id": 24, "text": "In April 1989, after his tenure with the National Security Council, Powell was promoted to four-star general under President George H. W. Bush and briefly served as the Commander in Chief, Forces Command (FORSCOM), headquartered at Fort McPherson, Georgia, overseeing all active U.S. Army regulars, U.S. Army Reserve, and National Guard units in the Continental U.S., Hawaii, and Puerto Rico. He became the third general since World War II to reach four-star rank without ever serving as a division commander, joining Dwight D. Eisenhower and Alexander Haig.", "title": "Military career" }, { "paragraph_id": 25, "text": "Later that year, President George H. W. Bush selected him as Chairman of the Joint Chiefs of Staff.", "title": "Military career" }, { "paragraph_id": 26, "text": "Powell's last military assignment, from October 1, 1989, to September 30, 1993, was as the 12th chairman of the Joint Chiefs of Staff, the highest military position in the Department of Defense. At age 52, he became the youngest officer, and first Afro-Caribbean American, to serve in this position. Powell was also the first JCS chair who received his commission through ROTC.", "title": "Military career" }, { "paragraph_id": 27, "text": "During this time, Powell oversaw responses to 28 crises, including the invasion of Panama in 1989 to remove General Manuel Noriega from power and Operation Desert Storm in the 1991 Persian Gulf War. During these events, Powell earned the nickname \"the reluctant warrior\" – although Powell himself disputed this label, and spoke in favor of the first Bush administration's Gulf War policies.", "title": "Military career" }, { "paragraph_id": 28, "text": "As a military strategist, Powell advocated an approach to military conflicts that maximizes the potential for success and minimizes casualties. A component of this approach is the use of overwhelming force, which he applied to Operation Desert Storm in 1991. His approach has been dubbed the Powell Doctrine. Powell continued as chairman of the JCS into the Clinton presidency. However, as a realist, he considered himself a bad fit for an administration largely made up of liberal internationalists. He clashed with then-U.S. ambassador to the United Nations Madeleine Albright over the Bosnian crisis, as he opposed any military intervention that did not involve U.S. interests.", "title": "Military career" }, { "paragraph_id": 29, "text": "Powell also regularly clashed with Secretary of Defense Leslie Aspin, whom he was initially hesitant to support after Aspin was nominated by President Clinton. During a lunch meeting between Powell and Aspin in preparation of Operation Gothic Serpent, Aspin was more focused on eating salad than listening and paying attention to Powell's presentation on military operations. The incident caused Powell to grow more irritated towards Aspin and led to his early resignation on September 30, 1993. Powell was succeeded temporarily by Vice Chairman of the Joint Chiefs of Staff Admiral David E. Jeremiah, who took the position as Acting Chairman of the Joint Chiefs of Staff. Soon after Powell's resignation, on October 3–4, 1993, the Battle of Mogadishu, the aim of which was to capture Somali warlord Mohamed Farrah Aidid, was initiated and ended in disaster. Powell later defended Aspin, saying in part that he could not fault Aspin for Aspin's decision to remove a Lockheed AC-130 from the list of armaments requested for the operation.", "title": "Military career" }, { "paragraph_id": 30, "text": "Powell took an early resignation from his tenure as Chairman of the Joint Chiefs of Staff on September 30, 1993.", "title": "Military career" }, { "paragraph_id": 31, "text": "The following year President Clinton sent newly-retired Powell, together with former President Jimmy Carter and Senator Sam Nunn, to visit Haiti in an effort to persuade General Raoul Cédras and the ruling junta to abdicate in favor of former Haitian President Aristide, under the threat of an imminent US invasion to remove them by force. Powell status as a retired general well known and respected in Haiti was held to be instrumental in persuading Gen. Cédras.", "title": "Military career" }, { "paragraph_id": 32, "text": "During his chairmanship of the JCS, there was discussion of awarding Powell a fifth star, granting him the rank of General of the Army. But even in the wake of public and Congressional pressure to do so, Clinton-Gore presidential transition team staffers decided against it.", "title": "Military career" }, { "paragraph_id": 33, "text": "Powell retained his role as the now-senior military assistant", "title": "Military career" }, { "paragraph_id": 34, "text": "Powell's experience in military matters made him a very popular figure with both American political parties. Many Democrats admired his moderate stance on military matters, while many Republicans saw him as a great asset associated with the successes of past Republican administrations. Put forth as a potential Democratic vice presidential nominee in the 1992 U.S. presidential election or even potentially replacing Vice President Dan Quayle as the Republican vice presidential nominee, Powell eventually declared himself a Republican and began to campaign for Republican candidates in 1995. He was touted as a possible opponent of Bill Clinton in the 1996 U.S. presidential election, possibly capitalizing on a split conservative vote in Iowa and even leading New Hampshire polls for the GOP nomination, but Powell declined, citing a lack of passion for politics. Powell defeated Clinton 50–38 in a hypothetical match-up proposed to voters in the exit polls conducted on Election Day. Despite not standing in the race, Powell won the Republican New Hampshire Vice-Presidential primary on write-in votes.", "title": "Potential presidential candidate" }, { "paragraph_id": 35, "text": "In 1997, Powell founded America's Promise with the objective of helping children from all socioeconomic sectors. That same year saw the establishment of The Colin L. Powell Center for Leadership and Service. The mission of the center is to \"prepare new generations of publicly engaged leaders from populations previously underrepresented in public service and policy circles, to build a strong culture of civic engagement at City College, and to mobilize campus resources to meet pressing community needs and serve the public good.\"", "title": "Potential presidential candidate" }, { "paragraph_id": 36, "text": "Powell was mentioned as a potential candidate in the 2000 U.S. presidential election, but again decided against running. Once Texas Governor George W. Bush secured the Republican nomination, Powell endorsed him for president and spoke at the 2000 Republican National Convention. Bush won the general election and appointed Powell as secretary of state in 2001.", "title": "Potential presidential candidate" }, { "paragraph_id": 37, "text": "In the electoral college vote count of 2016, Powell received three votes for president from faithless electors from Washington.", "title": "Potential presidential candidate" }, { "paragraph_id": 38, "text": "President-elect George W. Bush named Powell as his nominee to be secretary of state in a ceremony at his ranch in Crawford, Texas on December 16, 2000. This made Powell the first person to formally accept a Cabinet post in the Bush administration, as well the first black United States secretary of state. As secretary of state, Powell was perceived as moderate. Powell was unanimously confirmed by the United States Senate by voice vote on January 20, 2001, and ceremonially sworn in on January 26. Over the course of his tenure he traveled less than any other U.S. Secretary of State in thirty years. This is partly attributed to a letter from former diplomat George F. Kennan, who advised Powell to focus on his duties as the president's principal foreign policy advisor and avoid trips that risked undercutting the duties of the ambassadors.", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 39, "text": "On September 11, 2001, Powell was in Lima, Peru, meeting with President Alejandro Toledo and attending a meeting of foreign ministers of the Organization of American States. After the September 11 attacks, Powell's job became of critical importance in managing the United States of America's relationships with foreign countries to secure a stable coalition in the War on Terrorism.", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 40, "text": "My second purpose today is ... to share with you what the United States knows about Iraq's weapons of mass destruction ... Iraq's behavior demonstrate that Saddam Hussein and his regime have made no effort ... to disarm as required by the international community. Indeed, the facts and Iraq's behavior show that Saddam Hussein and his regime are concealing their efforts to produce more weapons of mass destruction ... every statement I make today is backed up by sources, solid sources. These are not assertions. What we're giving you are facts and conclusions based on solid intelligence.", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 41, "text": "Powell came under fire for his role in building the case for the 2003 invasion of Iraq. A 2004 report by the Iraq Survey Group concluded that the evidence that Powell offered to support the allegation that the Iraqi government possessed weapons of mass destruction (WMDs) was inaccurate. As early as 2000 on the day Powell was nominated to be Secretary of State he told the press \"Saddam is sitting on a failed regime that is not going to be around in a few years time\".", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 42, "text": "In a press statement on February 24, 2001, Powell had said that sanctions against Iraq had prevented the development of any weapons of mass destruction by Saddam Hussein. Powell favored involving the international community in the invasion, as opposed to a unilateral approach.", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 43, "text": "Powell's chief role was to garner international support for a multi-national coalition to mount the invasion. To this end, Powell addressed a plenary session of the United Nations Security Council on February 5, 2003, to argue in favor of military action. Citing numerous anonymous Iraqi defectors, Powell asserted that \"there can be no doubt that Saddam Hussein has biological weapons and the capability to rapidly produce more, many more.\" Powell also stated that there was \"no doubt in my mind\" that Saddam was working to obtain key components to produce nuclear weapons. Powell stated that he gave his speech to the UN on \"four days' notice\".", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 44, "text": "Britain's Channel 4 News reported soon afterwards that a British intelligence dossier that Powell had referred to as a \"fine paper\" during his presentation had been based on old material and plagiarized an essay by American graduate student Ibrahim al-Marashi.", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 45, "text": "A Senate report on intelligence failures would later detail the intense debate that went on behind the scenes on what to include in Powell's speech. State Department analysts had found dozens of factual problems in drafts of the speech. Some of the claims were taken out, but others were left in, such as claims based on the yellowcake forgery. The administration came under fire for having acted on faulty intelligence, particularly that which was single-sourced to the informant known as Curveball. Powell later recounted how Vice President Dick Cheney had joked with him before he gave the speech, telling him, \"You've got high poll ratings; you can afford to lose a few points.\" Powell's longtime aide-de-camp and Chief of Staff from 1989 to 2003, Colonel Lawrence Wilkerson, later characterized Cheney's view of Powell's mission as to \"go up there and sell it, and we'll have moved forward a peg or two. Fall on your damn sword and kill yourself, and I'll be happy, too.\"", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 46, "text": "In September 2005, Powell was asked about the speech during an interview with Barbara Walters and responded that it was a \"blot\" on his record. He went on to say, \"It will always be a part of my record. It was painful. It's painful now.\"", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 47, "text": "Wilkerson later said that he inadvertently participated in a hoax on the American people in preparing Powell's erroneous testimony before the United Nations Security Council.", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 48, "text": "As recounted in Soldier: The Life of Colin Powell, in 2001 before 9/11, Richard A. Clarke, a National Security Council holdover from the Clinton administration, pushed the new Bush administration for action against al-Qaeda in Afghanistan, a move opposed by Paul Wolfowitz who advocated for the creation of a \"U.S.-protected, opposition-run 'liberated' enclave around the southern Iraqi city of Basra\". Powell referred to Wolfowitz and other top members of Donald Rumsfeld's staff \"as the 'JINSA crowd,' \" in reference to the pro-Israel Jewish Institute for National Security Affairs. Again invoking \"the JINSA crowd\" Powell also attributed the decision to go to war in Iraq in 2003 to the neoconservative belief that regime change in Baghdad \"was a first and necessary stop on the road to peace in Jerusalem.\"", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 49, "text": "A review of Soldier by Tim Rutten criticized Powell's remarks as a \"blot on his record\", accusing Powell of slandering \"neoconservatives in the Defense Department – nearly all of them Jews\" with \"old and wholly unmeritorious allegations of dual loyalty\". A 2007 article about fears that Jewish groups \"will be accused of driving America into a war with the regime in Tehran\" cited the DeYoung biography and quoted JINSA's then-executive director, Thomas Neumann, as \"surprised\" Powell \"would single out a Jewish group when naming those who supported the war.\" Neumann said, \"I am not accusing Powell of anything, but these are words that the antisemites will use in the future\".", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 50, "text": "Once Saddam Hussein had been deposed, Powell's renewed role was to once again establish a working international coalition, this time to assist in the rebuilding of post-war Iraq. On September 13, 2004, Powell testified before the Senate Governmental Affairs Committee, acknowledging that the sources who provided much of the information in his February 2003 UN presentation were \"wrong\" and that it was \"unlikely\" that any stockpiles of WMDs would be found. Claiming that he was unaware that some intelligence officials questioned the information prior to his presentation, Powell pushed for reform in the intelligence community, including the creation of a national intelligence director who would assure that \"what one person knew, everyone else knew\".", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 51, "text": "Additionally, Powell was critical of other aspects of U.S. foreign policy in the past, such as its support for the 1973 Chilean coup d'état that deposed the democratically elected president Salvador Allende in favor of Augusto Pinochet. From two separate interviews in 2003, Powell stated in one about the 1973 event: \"I can't justify or explain the actions and decisions that were made at that time. It was a different time. There was a great deal of concern about communism in this part of the world. Communism was a threat to the democracies in this part of the world. It was a threat to the United States.\" In another interview, he also simply stated: \"With respect to your earlier comment about Chile in the 1970s and what happened with Mr. Allende, it is not a part of American history that we're proud of.\"", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 52, "text": "In the Hainan Island incident of April 1, 2001, a United States US EP-3 surveillance aircraft collided mid-air with a Chinese Shenyang J-8 jet fighter over the South China Sea. While somewhat ambiguous, Powell's expression of \"very sorry\" was accepted as sufficient for the formal apology that China had sought. The incident was nonetheless a serious flare-up in United States-China relations and created negative feelings towards the United States by the Chinese public and increased public feelings of Chinese nationalism.", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 53, "text": "In September 2004, Powell described the Darfur genocide as \"genocide\", thus becoming the first cabinet member to apply the term \"genocide\" to events in an ongoing conflict.", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 54, "text": "In November the president \"forced Powell to resign\", according to Walter LaFeber. Powell announced his resignation as Secretary of State on November 15, 2004, shortly after Bush was reelected. Bush's desire for Powell to resign was communicated to Powell via a phone call by Bush's chief of staff, Andrew Card. The following day, Bush nominated National Security Advisor Condoleezza Rice as Powell's successor.", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 55, "text": "In mid-November, Powell stated that he had seen new evidence suggesting that Iran was adapting missiles for a nuclear delivery system. The accusation came at the same time as the settlement of an agreement between Iran, the IAEA, and the European Union.", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 56, "text": "Although biographer Jeffrey J. Matthews is highly critical of how Powell misled the United Nations Security Council regarding weapons of mass destruction in Iraq, he credits Powell with a series of achievements at the State Department. These include restoration of morale to psychologically demoralized professional diplomats, leadership of the international HIV/AIDS initiative, resolving a crisis with China, and blocking efforts to tie Saddam Hussein to the 9/11 attacks on the United States.", "title": "Secretary of State (2001–2005)" }, { "paragraph_id": 57, "text": "After retiring from the role of Secretary of State, Powell returned to private life. In April 2005, he was privately telephoned by Republican senators Lincoln Chafee and Chuck Hagel, at which time Powell expressed reservations and mixed reviews about the nomination of John Bolton as ambassador to the United Nations, but refrained from advising the senators to oppose Bolton (Powell had clashed with Bolton during Bush's first term). The decision was viewed as potentially dealing significant damage to Bolton's chances of confirmation. Bolton was put into the position via a recess appointment because of the strong opposition in the Senate.", "title": "Life after diplomatic service" }, { "paragraph_id": 58, "text": "On April 28, 2005, an opinion piece in The Guardian by Sidney Blumenthal (a former top aide to President Bill Clinton) claimed that Powell was in fact \"conducting a campaign\" against Bolton because of the acrimonious battles they had had while working together, which among other things had resulted in Powell cutting Bolton out of talks with Iran and Libya after complaints about Bolton's involvement from the British. Blumenthal added that \"The foreign relations committee has discovered that Bolton made a highly unusual request and gained access to 10 intercepts by the National Security Agency. Staff members on the committee believe that Bolton was probably spying on Powell, his senior advisors and other officials reporting to him on diplomatic initiatives that Bolton opposed.\"", "title": "Life after diplomatic service" }, { "paragraph_id": 59, "text": "In September 2005, Powell criticized the response to Hurricane Katrina, and said thousands of people were not properly protected because they were poor, rather than because they were black.", "title": "Life after diplomatic service" }, { "paragraph_id": 60, "text": "On January 5, 2006, he participated in a meeting at the White House of former Secretaries of Defense and State to discuss United States foreign policy with Bush administration officials. In September 2006, Powell sided with more moderate Senate Republicans in supporting more rights for detainees and opposing President Bush's terrorism bill. He backed Senators John Warner, John McCain, and Lindsey Graham in their statement that U.S. military and intelligence personnel in future wars will suffer for abuses committed in 2006 by the U.S. in the name of fighting terrorism. Powell stated that \"The world is beginning to doubt the moral basis of our fight against terrorism.\"", "title": "Life after diplomatic service" }, { "paragraph_id": 61, "text": "In 2007, he joined the board of directors of Steve Case's new company Revolution Health. Powell also served on the Council on Foreign Relations Board of directors.", "title": "Life after diplomatic service" }, { "paragraph_id": 62, "text": "In 2008, Powell served as a spokesperson for National Mentoring Month, a campaign held each January to recruit volunteer mentors for at-risk youth.", "title": "Life after diplomatic service" }, { "paragraph_id": 63, "text": "Soon after Barack Obama's 2008 election, Powell began being mentioned as a possible cabinet member. He was not nominated.", "title": "Life after diplomatic service" }, { "paragraph_id": 64, "text": "In September 2009, Powell advised President Obama against surging U.S. forces in Afghanistan. The president announced the surge the following December.", "title": "Life after diplomatic service" }, { "paragraph_id": 65, "text": "In 2010, Powell joined the Smithsonian advisory council . Together with his wife, Alma Powell, they are the founding donors who offer their support to the museum's capital campaign and Living History campaign. He was an advocate for the National Museum of African American History and Culture.", "title": "Life after diplomatic service" }, { "paragraph_id": 66, "text": "On March 14, 2014, Salesforce.com announced that Powell had joined its board of directors.", "title": "Life after diplomatic service" }, { "paragraph_id": 67, "text": "During his early political career through his tenure within the Joint Chiefs of Staff, Powell was an independent. Powell was a moderate Republican from 1995 until 2021. Many have described Powell as a neoconservative for his foreign policy positions, although Powell has never personally acknowledged the label. In 2021, Powell recanted his status as a Republican following the January 6 United States Capitol attack. The attack moved Powell to call for president Trump's resignation, noting: \"I wish he would do what Nixon did and just step down. Somebody ought to go up to him and it's over.\" Powell also accused Trump of attempting to \"overthrow the government\", and that Trump's false claims of a stolen election were \"dangerous for our democracy\". Powell was pro-choice regarding abortion, and expressed some support for an assault weapons ban. He stated in his autobiography that he supported affirmative action that levels the playing field, without giving a leg up to undeserving persons because of racial issues. Powell originally suggested the don't ask, don't tell policy to President Clinton, though he later supported its repeal as proposed by Robert Gates and Admiral Mike Mullen in January 2010, saying \"circumstances had changed\".", "title": "Political positions" }, { "paragraph_id": 68, "text": "Powell gained attention in 2004 when, in a conversation with British Foreign Secretary Jack Straw, he reportedly referred to neoconservatives within the Bush administration as \"fucking crazies\".", "title": "Political positions" }, { "paragraph_id": 69, "text": "In a September 2006 letter to John McCain, Powell expressed opposition to President Bush's push for military tribunals of those formerly and currently classified as enemy combatants. Specifically, he objected to the effort in Congress to \"redefine Common Article 3 of the Geneva Convention.\" He also asserted: \"The world is beginning to doubt the moral basis of our fight against terrorism.\"", "title": "Political positions" }, { "paragraph_id": 70, "text": "At the 2007 Aspen Ideas Festival in Colorado, Powell stated that he had spent two and a half hours explaining to President Bush \"the consequences of going into an Arab country and becoming the occupiers\". During this discussion, he insisted that the U.S. appeal to the United Nations first, but if diplomacy failed, he would support the invasion: \"I also had to say to him that you are the President, you will have to make the ultimate judgment, and if the judgment is this isn't working and we don't think it is going to solve the problem, then if military action is undertaken I'm with you, I support you.\"", "title": "Political positions" }, { "paragraph_id": 71, "text": "In a 2008 interview on CNN, Powell reiterated his support for the 2003 decision to invade Iraq in the context of his endorsement of Barack Obama, stating: \"My role has been very, very straightforward. I wanted to avoid a war. The president [Bush] agreed with me. We tried to do that. We couldn't get it through the U.N. and when the president made the decision, I supported that decision. And I've never blinked from that. I've never said I didn't support a decision to go to war.\"", "title": "Political positions" }, { "paragraph_id": 72, "text": "Powell's position on the Iraq War troop surge of 2007 was less consistent. In December 2006, he expressed skepticism that the strategy would work and whether the U.S. military had enough troops to carry it out successfully. He stated: \"I am not persuaded that another surge of troops into Baghdad for the purposes of suppressing this communitarian violence, this civil war, will work.\" Following his endorsement of Barack Obama in October 2008, however, Powell praised General David Petraeus and U.S. troops, as well as the Iraqi government, concluding that \"it's starting to turn around\". By mid-2009, he had concluded a surge of U.S. forces in Iraq should have come sooner, perhaps in late 2003.", "title": "Political positions" }, { "paragraph_id": 73, "text": "Powell donated the maximum allowable amount to John McCain's campaign in the summer of 2007 and in early 2008, his name was listed as a possible running mate for Republican nominee McCain's bid during the 2008 U.S. presidential election.", "title": "Political positions" }, { "paragraph_id": 74, "text": "McCain won the Republican presidential nomination, but the Democrats nominated the first black candidate, Senator Barack Obama of Illinois. On October 19, 2008, Powell announced his endorsement of Obama during a Meet the Press interview, citing \"his ability to inspire, because of the inclusive nature of his campaign, because he is reaching out all across America, because of who he is and his rhetorical abilities\", in addition to his \"style and substance.\" He additionally referred to Obama as a \"transformational figure\". Powell further questioned McCain's judgment in appointing Sarah Palin as the vice presidential candidate, stating that despite the fact that she is admired, \"now that we have had a chance to watch her for some seven weeks, I don't believe she's ready to be president of the United States, which is the job of the vice president.\" He said that Obama's choice for vice-president, Joe Biden, was ready to be president. He also added that he was \"troubled\" by the \"false intimations that Obama was Muslim.\" Powell stated that \"[Obama] is a Christian – he's always been a Christian... But the really right answer is, what if he is? Is there something wrong with being a Muslim in this country? The answer's no, that's not America.\" Powell then mentioned Kareem Rashad Sultan Khan, a Muslim American soldier in the U.S. Army who served and died in the Iraq War. He later stated, \"Over the last seven weeks, the approach of the Republican Party has become narrower and narrower [...] I look at these kind of approaches to the campaign, and they trouble me.\" Powell concluded his Sunday morning talk show comments, \"It isn't easy for me to disappoint Sen. McCain in the way that I have this morning, and I regret that [...] I think we need a transformational figure. I think we need a president who is a generational change and that's why I'm supporting Barack Obama, not out of any lack of respect or admiration for Sen. John McCain.\" Later in a December 12, 2008, CNN interview with Fareed Zakaria, Powell reiterated his belief that during the last few months of the campaign, Palin pushed the Republican party further to the right and had a polarizing impact on it.", "title": "Political positions" }, { "paragraph_id": 75, "text": "When asked why he was still a Republican on Meet the Press he said, \"I'm still a Republican. And I think the Republican Party needs me more than the Democratic Party needs me. And you can be a Republican and still feel strongly about issues such as immigration, and improving our education system, and doing something about some of the social problems that exist in our society and our country. I don't think there's anything inconsistent with this.\"", "title": "Political positions" }, { "paragraph_id": 76, "text": "In a July 2009 CNN interview with John King, Powell expressed concern over President Obama increasing the size of the federal government and the size of the federal budget deficit. In September 2010, he criticized the Obama administration for not focusing \"like a razor blade\" on the economy and job creation. Powell reiterated that Obama was a \"transformational figure.\" In a video that aired on CNN.com in November 2011, Colin Powell said in reference to Barack Obama, \"many of his decisions have been quite sound. The financial system was put back on a stable basis.\"", "title": "Political positions" }, { "paragraph_id": 77, "text": "On October 25, 2012, 12 days before the presidential election, he gave his endorsement to President Obama for re-election during a broadcast of CBS This Morning. He considered the administration to have had success and achieved progress in foreign and domestic policy arenas. As additional reasons for his endorsement, Powell cited the changing positions and perceived lack of thoughtfulness of Mitt Romney on foreign affairs, and a concern for the validity of Romney's economic plans.", "title": "Political positions" }, { "paragraph_id": 78, "text": "In an interview with ABC's Diane Sawyer and George Stephanopoulos during ABC's coverage of President Obama's second inauguration, Powell criticized members of the Republican Party who spread \"things that demonize the president\". He called on GOP leaders to publicly denounce such talk.", "title": "Political positions" }, { "paragraph_id": 79, "text": "Powell was very vocal on the state of the Republican Party. Speaking at a Washington Ideas forum in early October 2015, he warned the audience that the Republican Party had begun a move to the fringe right, lessening the chances of a Republican White House in the future. He also remarked on Republican presidential candidate Donald Trump's statements regarding immigrants, noting that there were many immigrants working in Trump hotels.", "title": "Political positions" }, { "paragraph_id": 80, "text": "In March 2016, Powell denounced the \"nastiness\" of the 2016 Republican primaries during an interview on CBS This Morning. He compared the race to reality television, and stated that the campaign had gone \"into the mud.\"", "title": "Political positions" }, { "paragraph_id": 81, "text": "In August 2016, Powell accused the Hillary Clinton campaign of trying to pin her email controversy on him. Speaking to People magazine, Powell said, \"The truth is, she was using [the private email server] for a year before I sent her a memo telling her what I did.\"", "title": "Political positions" }, { "paragraph_id": 82, "text": "On September 13, 2016, emails were obtained that revealed Powell's private communications regarding both Donald Trump and Hillary Clinton. Powell privately reiterated his comments regarding Clinton's email scandal, writing, \"I have told Hillary's minions repeatedly that they are making a mistake trying to drag me in, yet they still try,\" and complaining that \"Hillary's mafia keeps trying to suck me into it\" in another email. In another email discussing Clinton's controversy, Powell said she should have told everyone what she did \"two years ago\", and said that she has not \"been covering herself with glory.\" Writing on the 2012 Benghazi attack controversy surrounding Clinton, Powell said to then U.S. Ambassador Susan Rice, \"Benghazi is a stupid witch hunt.\" Commenting on Clinton in a general sense, he mused that \"Everything HRC touches she kind of screws up with hubris\", and in another email stated \"I would rather not have to vote for her, although she is a friend I respect.\"", "title": "Political positions" }, { "paragraph_id": 83, "text": "Powell called Donald Trump a \"national disgrace\", with \"no sense of shame\". He wrote of Trump's role in the birther movement, which he called \"racist\". He suggested the media ignore Trump: \"To go on and call him an idiot just emboldens him.\" The emails were obtained by the media as the result of a hack.", "title": "Political positions" }, { "paragraph_id": 84, "text": "Powell endorsed Clinton on October 25, 2016, stating it was \"because I think she's qualified, and the other gentleman is not qualified\".", "title": "Political positions" }, { "paragraph_id": 85, "text": "Despite not running in the election, Powell received three electoral votes for president from faithless electors in Washington who had pledged to vote for Clinton, coming in third overall. After Barack Obama, he was the second black person to receive electoral votes in a presidential election.", "title": "Political positions" }, { "paragraph_id": 86, "text": "In an interview in October 2019, Powell warned that the GOP needed to \"get a grip\" and put the country before their party, standing up to then president Trump rather than worrying about political fallout. He said: \"When they see things that are not right, they need to say something about it because our foreign policy is in shambles right now, in my humble judgment, and I see things happening that are hard to understand.\" On June 7, 2020, Powell announced he would be voting for former Vice President Joe Biden in the 2020 United States presidential election. In August, Powell delivered a speech in support of Biden's candidacy at the 2020 Democratic National Convention.", "title": "Political positions" }, { "paragraph_id": 87, "text": "In January 2021, after the Capitol building was attacked by Trump supporters, Powell told CNN: \"I can no longer call myself a fellow Republican.\"", "title": "Political positions" }, { "paragraph_id": 88, "text": "Powell married Alma Johnson on August 25, 1962. Their son, Michael Powell, was the chairman of the Federal Communications Commission (FCC) from 2001 to 2005. Their daughters are Linda Powell, an actress, and Annemarie Powell. As a hobby, Powell restored old Volvo and Saab automobiles. In 2013, he faced questions about his relationship with the Romanian diplomat Corina Crețu, after a hacked AOL email account had been made public. He acknowledged a \"very personal\" email relationship but denied further involvement. He was an Episcopalian.", "title": "Personal life" }, { "paragraph_id": 89, "text": "On October 18, 2021, Powell, who was being treated for multiple myeloma, died at Walter Reed National Military Medical Center of complications from COVID-19 at the age of 84. He had been vaccinated, but his myeloma compromised his immune system; he also had early-stage Parkinson's disease. President Joe Biden and four of the five living former presidents issued statements calling Powell as an American hero. Donald Trump released a statement saying \"He made plenty of mistakes, but anyway, may he rest in peace!\" and referred to him as a \"classic RINO\".", "title": "Death" }, { "paragraph_id": 90, "text": "Present at the funeral service at the Washington National Cathedral were President Biden and former presidents Barack Obama and George W. Bush, along with First Lady Jill Biden and former first ladies Michelle Obama, Laura Bush, and Hillary Clinton (also representing her husband, former President Bill Clinton, who was unable to attend following treatment for sepsis) as well as many other dignitaries.", "title": "Death" }, { "paragraph_id": 91, "text": "Powell is buried at Arlington National Cemetery in Section 60, Grave 11917.", "title": "Death" }, { "paragraph_id": 92, "text": "Powell's civilian awards include two Presidential Medals of Freedom (the second with distinction), the Congressional Gold Medal, and the Ronald Reagan Freedom Award.", "title": "Civilian awards and honors" } ]	Colin Luther Powell was an American politician, statesman, diplomat, and United States Army officer who was the 65th United States secretary of state from 2001 to 2005. He was the first Black secretary of state. He was the 15th United States national security advisor from 1987 to 1989, and the 12th chairman of the Joint Chiefs of Staff from 1989 to 1993. Powell was born in New York City in 1937 to parents who immigrated from Jamaica. He was raised in the South Bronx and educated in the New York City public schools, earning a bachelor's degree in geology from the City College of New York (CCNY). He also participated in ROTC at CCNY and received a commission as an Army second lieutenant on graduation in June 1958. He was a professional soldier for 35 years, holding many command and staff positions and rising to the rank of four-star general. He was commander of the U.S. Army Forces Command in 1989. Powell's last military assignment, from October 1989 to September 1993, was as Joint Chiefs of Staff chairman, the highest military position in the United States Department of Defense. During this time, he oversaw twenty-eight crises, including the invasion of Panama in 1989 and Operation Desert Storm in the Persian Gulf War against Iraq in 1990–1991. He formulated the Powell Doctrine, which limits American military action unless it satisfies criteria regarding American national security interests, overwhelming force, and widespread public support. He served as secretary of state under Republican president George W. Bush. As secretary of state, Powell gave a presentation to the United Nations Security Council regarding the rationale for the Iraq War, but he later admitted that the speech contained substantial inaccuracies. He was forced to resign after Bush was reelected in 2004. In 1995, Powell wrote his autobiography, My American Journey, and then in retirement another book, It Worked for Me, Lessons in Life and Leadership (2012). He pursued a career as a public speaker, addressing audiences across the country and abroad. Before his appointment as Secretary of State, he chaired America's Promise. In the 2016 United States presidential election, Powell, who was not a candidate, received three electoral votes from Washington for the office of President of the United States. He won numerous U.S. and foreign military awards and decorations. His civilian awards included the Presidential Medal of Freedom (twice), the Congressional Gold Medal, the Presidential Citizens Medal, and the Secretary's Distinguished Service Award. Powell died from complications of COVID-19 in 2021, while being treated for a form of blood cancer that damaged his immune system.	2001-11-03T07:23:21Z	2023-12-19T20:57:30Z	[ "Template:Xref", "Template:External media", "Template:S-ach", "Template:Blockquote", "Template:Infobox Coat of arms", "Template:S-ppo", "Template:ISBN", "Template:Sfn", "Template:Circa", "Template:N/a", "Template:Cite web", "Template:Cite book", "Template:Use mdy dates", "Template:Ribbon devices", "Template:Cite news", "Template:S-ttl", "Template:Pp-move-indef", "Template:C-SPAN", "Template:New York Times topic", "Template:Authority control", "Template:Cite magazine", "Template:Infobox officeholder", "Template:IPAc-en", "Template:S-off", "Template:Portal", "Template:Cite interview", "Template:Use American English", "Template:Respell", "Template:Main", "Template:Reflist", "Template:Cite journal", "Template:Webarchive", "Template:OCLC", "Template:S-end", "Template:Pp-semi-blp", "Template:Snd", "Template:IMDb name", "Template:Citation needed", "Template:Charlie Rose guest", "Template:S-bef", "Template:Short description", "Template:Guardian topic", "Template:S-aft", "Template:Hatnote group", "Template:Wikinews", "Template:Sister project links", "Template:S-start", "Template:Navboxes", "Template:Lang", "Template:Cite report", "Template:Cite AV media", "Template:Citation", "Template:Rp", "Template:S-mil" ]	https://en.wikipedia.org/wiki/Colin_Powell
6,985	Chlorophyll	Chlorophyll (also chlorophyl) is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words χλωρός, khloros ("pale green") and φύλλον, phyllon ("leaf"). Chlorophyll allow plants to absorb energy from light. Chlorophylls absorb light most strongly in the blue portion of the electromagnetic spectrum as well as the red portion. Conversely, it is a poor absorber of green and near-green portions of the spectrum. Hence chlorophyll-containing tissues appear green because green light, diffusively reflected by structures like cell walls, is less absorbed. Two types of chlorophyll exist in the photosystems of green plants: chlorophyll a and b. Chlorophyll was first isolated and named by Joseph Bienaimé Caventou and Pierre Joseph Pelletier in 1817. The presence of magnesium in chlorophyll was discovered in 1906, and was the first detection of that element in living tissue. After initial work done by German chemist Richard Willstätter spanning from 1905 to 1915, the general structure of chlorophyll a was elucidated by Hans Fischer in 1940. By 1960, when most of the stereochemistry of chlorophyll a was known, Robert Burns Woodward published a total synthesis of the molecule. In 1967, the last remaining stereochemical elucidation was completed by Ian Fleming, and in 1990 Woodward and co-authors published an updated synthesis. Chlorophyll f was announced to be present in cyanobacteria and other oxygenic microorganisms that form stromatolites in 2010; a molecular formula of C55H70O6N4Mg and a structure of (2-formyl)-chlorophyll a were deduced based on NMR, optical and mass spectra. Chlorophyll is vital for photosynthesis, which allows plants to absorb energy from light. Chlorophyll molecules are arranged in and around photosystems that are embedded in the thylakoid membranes of chloroplasts. In these complexes, chlorophyll serves three functions: The two currently accepted photosystem units are photosystem I and photosystem II, which have their own distinct reaction centres, named P700 and P680, respectively. These centres are named after the wavelength (in nanometers) of their red-peak absorption maximum. The identity, function and spectral properties of the types of chlorophyll in each photosystem are distinct and determined by each other and the protein structure surrounding them. The function of the reaction center of chlorophyll is to absorb light energy and transfer it to other parts of the photosystem. The absorbed energy of the photon is transferred to an electron in a process called charge separation. The removal of the electron from the chlorophyll is an oxidation reaction. The chlorophyll donates the high energy electron to a series of molecular intermediates called an electron transport chain. The charged reaction center of chlorophyll (P680) is then reduced back to its ground state by accepting an electron stripped from water. The electron that reduces P680 ultimately comes from the oxidation of water into O2 and H through several intermediates. This reaction is how photosynthetic organisms such as plants produce O2 gas, and is the source for practically all the O2 in Earth's atmosphere. Photosystem I typically works in series with Photosystem II; thus the P700 of Photosystem I is usually reduced as it accepts the electron, via many intermediates in the thylakoid membrane, by electrons coming, ultimately, from Photosystem II. Electron transfer reactions in the thylakoid membranes are complex, however, and the source of electrons used to reduce P700 can vary. The electron flow produced by the reaction center chlorophyll pigments is used to pump H ions across the thylakoid membrane, setting up a proton-motive force a chemiosmotic potential used mainly in the production of ATP (stored chemical energy) or to reduce NADP to NADPH. NADPH is a universal agent used to reduce CO2 into sugars as well as other biosynthetic reactions. Reaction center chlorophyll–protein complexes are capable of directly absorbing light and performing charge separation events without the assistance of other chlorophyll pigments, but the probability of that happening under a given light intensity is small. Thus, the other chlorophylls in the photosystem and antenna pigment proteins all cooperatively absorb and funnel light energy to the reaction center. Besides chlorophyll a, there are other pigments, called accessory pigments, which occur in these pigment–protein antenna complexes. Several chlorophylls are known. All are defined as derivatives of the parent chlorin by the presence of a fifth, ketone-containing ring beyond the four pyrrole-like rings. Most chlorophylls are classified as chlorins, which are reduced relatives of porphyrins (found in hemoglobin). They share a common biosynthetic pathway with porphyrins, including the precursor uroporphyrinogen III. Unlike hemes, which contain iron bound to the N4 center, most chlorophylls bind magnesium. The axial ligands attached to the Mg center are often omitted for clarity. Appended to the chlorin ring are various side chains, usually including a long phytyl chain (C20H39O). The most widely distributed form in terrestrial plants is chlorophyll a. The only difference between chlorophyll a and chlorophyll b is that the former has a methyl group where the latter has a formyl group. This difference causes a considerable difference in the absorption spectrum, allowing plants to absorb a greater portion of visible light. The structures of chlorophylls are summarized below: Chlorophyll e is reserved for a pigment that has been extracted from algae in 1966 but not chemically described. Besides the lettered chlophylls, a wide variety of sidechain modifications to the chlorophyll structures are known in the wild. For example, Prochlorococcus, a cyanobacterium, uses 8-vinyl Chl a and b. Chlorophylls can be extracted from the protein into organic solvents. In this way, the concentration of chlorophyll within a leaf can be estimated. Methods also exist to separate chlorophyll a and chlorophyll b. In diethyl ether, chlorophyll a has approximate absorbance maxima of 430 nm and 662 nm, while chlorophyll b has approximate maxima of 453 nm and 642 nm. The absorption peaks of chlorophyll a are at 465 nm and 665 nm. Chlorophyll a fluoresces at 673 nm (maximum) and 726 nm. The peak molar absorption coefficient of chlorophyll a exceeds 10 M cm, which is among the highest for small-molecule organic compounds. In 90% acetone-water, the peak absorption wavelengths of chlorophyll a are 430 nm and 664 nm; peaks for chlorophyll b are 460 nm and 647 nm; peaks for chlorophyll c1 are 442 nm and 630 nm; peaks for chlorophyll c2 are 444 nm and 630 nm; peaks for chlorophyll d are 401 nm, 455 nm and 696 nm. Ratio fluorescence emission can be used to measure chlorophyll content. By exciting chlorophyll a fluorescence at a lower wavelength, the ratio of chlorophyll fluorescence emission at 705±10 nm and 735±10 nm can provide a linear relationship of chlorophyll content when compared with chemical testing. The ratio F735/F700 provided a correlation value of r 0.96 compared with chemical testing in the range from 41 mg m up to 675 mg m. Gitelson also developed a formula for direct readout of chlorophyll content in mg m. The formula provided a reliable method of measuring chlorophyll content from 41 mg m up to 675 mg m with a correlation r value of 0.95. In some plants, chlorophyll is derived from glutamate and is synthesised along a branched biosynthetic pathway that is shared with heme and siroheme. Chlorophyll synthase is the enzyme that completes the biosynthesis of chlorophyll a: This converion forms an ester of the carboxylic acid group in chlorophyllide a with the 20-carbon diterpene alcohol phytol. Chlorophyll b is made by the same enzyme acting on chlorophyllide b. The same is known for chlorophyll d and f, both made from corresponding chlorophyllides ultimately made from chlorophyllide a. In Angiosperm plants, the later steps in the biosynthetic pathway are light-dependent. Such plants are pale (etiolated) if grown in darkness. Non-vascular plants and green algae have an additional light-independent enzyme and grow green even in darkness. Chlorophyll is bound to proteins. Protochlorophyllide, one of the biosynthetic intermediates, occurs mostly in the free form and, under light conditions, acts as a photosensitizer, forming free radicals, which can be toxic to the plant. Hence, plants regulate the amount of this chlorophyll precursor. In angiosperms, this regulation is achieved at the step of aminolevulinic acid (ALA), one of the intermediate compounds in the biosynthesis pathway. Plants that are fed by ALA accumulate high and toxic levels of protochlorophyllide; so do the mutants with a damaged regulatory system. The process of plant senescence involves the degradation of chlorophyll: for example the enzyme chlorophyllase (EC 3.1.1.14) hydrolyses the phytyl sidechain to reverse the reaction in which chlorophylls are biosynthesised from chlorophyllide a or b. Since chlorophyllide a can be converted to chlorophyllide b and the latter can be re-esterified to chlorophyll b, these processes allow cycling between chlorophylls a and b. Moreover, chlorophyll b can be directly reduced (via 7-hydroxychlorophyll a) back to chlorophyll a, completing the cycle. In later stages of senescence, chlorophyllides are converted to a group of colourless tetrapyrroles known as nonfluorescent chlorophyll catabolites (NCC's) with the general structure: These compounds have also been identified in ripening fruits and they give characteristic autumn colours to deciduous plants. The chlorophyll maps show milligrams of chlorophyll per cubic meter of seawater each month. Places where chlorophyll amounts were very low, indicating very low numbers of phytoplankton, are blue. Places where chlorophyll concentrations were high, meaning many phytoplankton were growing, are yellow. The observations come from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite. Land is dark gray, and places where MODIS could not collect data because of sea ice, polar darkness, or clouds are light gray. The highest chlorophyll concentrations, where tiny surface-dwelling ocean plants are thriving, are in cold polar waters or in places where ocean currents bring cold water to the surface, such as around the equator and along the shores of continents. It is not the cold water itself that stimulates the phytoplankton. Instead, the cool temperatures are often a sign that the water has welled up to the surface from deeper in the ocean, carrying nutrients that have built up over time. In polar waters, nutrients accumulate in surface waters during the dark winter months when plants cannot grow. When sunlight returns in the spring and summer, the plants flourish in high concentrations. Synthetic chlorophyll is registered as a food additive colorant, and its E number is E140. Chefs use chlorophyll to color a variety of foods and beverages green, such as pasta and spirits. Absinthe gains its green color naturally from the chlorophyll introduced through the large variety of herbs used in its production. Chlorophyll is not soluble in water, and it is first mixed with a small quantity of vegetable oil to obtain the desired solution. A 2002 study found that "leaves exposed to strong light contained degraded major antenna proteins, unlike those kept in the dark, which is consistent with studies on the illumination of isolated proteins". This appeared to the authors as support for the hypothesis that "active oxygen species play a role in vivo" in the short-term behaviour of plants.	[ { "paragraph_id": 0, "text": "Chlorophyll (also chlorophyl) is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words χλωρός, khloros (\"pale green\") and φύλλον, phyllon (\"leaf\"). Chlorophyll allow plants to absorb energy from light.", "title": "" }, { "paragraph_id": 1, "text": "Chlorophylls absorb light most strongly in the blue portion of the electromagnetic spectrum as well as the red portion. Conversely, it is a poor absorber of green and near-green portions of the spectrum. Hence chlorophyll-containing tissues appear green because green light, diffusively reflected by structures like cell walls, is less absorbed. Two types of chlorophyll exist in the photosystems of green plants: chlorophyll a and b.", "title": "" }, { "paragraph_id": 2, "text": "Chlorophyll was first isolated and named by Joseph Bienaimé Caventou and Pierre Joseph Pelletier in 1817. The presence of magnesium in chlorophyll was discovered in 1906, and was the first detection of that element in living tissue.", "title": "History" }, { "paragraph_id": 3, "text": "After initial work done by German chemist Richard Willstätter spanning from 1905 to 1915, the general structure of chlorophyll a was elucidated by Hans Fischer in 1940. By 1960, when most of the stereochemistry of chlorophyll a was known, Robert Burns Woodward published a total synthesis of the molecule. In 1967, the last remaining stereochemical elucidation was completed by Ian Fleming, and in 1990 Woodward and co-authors published an updated synthesis. Chlorophyll f was announced to be present in cyanobacteria and other oxygenic microorganisms that form stromatolites in 2010; a molecular formula of C55H70O6N4Mg and a structure of (2-formyl)-chlorophyll a were deduced based on NMR, optical and mass spectra.", "title": "History" }, { "paragraph_id": 4, "text": "Chlorophyll is vital for photosynthesis, which allows plants to absorb energy from light.", "title": "Photosynthesis" }, { "paragraph_id": 5, "text": "Chlorophyll molecules are arranged in and around photosystems that are embedded in the thylakoid membranes of chloroplasts. In these complexes, chlorophyll serves three functions:", "title": "Photosynthesis" }, { "paragraph_id": 6, "text": "The two currently accepted photosystem units are photosystem I and photosystem II, which have their own distinct reaction centres, named P700 and P680, respectively. These centres are named after the wavelength (in nanometers) of their red-peak absorption maximum. The identity, function and spectral properties of the types of chlorophyll in each photosystem are distinct and determined by each other and the protein structure surrounding them.", "title": "Photosynthesis" }, { "paragraph_id": 7, "text": "The function of the reaction center of chlorophyll is to absorb light energy and transfer it to other parts of the photosystem. The absorbed energy of the photon is transferred to an electron in a process called charge separation. The removal of the electron from the chlorophyll is an oxidation reaction. The chlorophyll donates the high energy electron to a series of molecular intermediates called an electron transport chain. The charged reaction center of chlorophyll (P680) is then reduced back to its ground state by accepting an electron stripped from water. The electron that reduces P680 ultimately comes from the oxidation of water into O2 and H through several intermediates. This reaction is how photosynthetic organisms such as plants produce O2 gas, and is the source for practically all the O2 in Earth's atmosphere. Photosystem I typically works in series with Photosystem II; thus the P700 of Photosystem I is usually reduced as it accepts the electron, via many intermediates in the thylakoid membrane, by electrons coming, ultimately, from Photosystem II. Electron transfer reactions in the thylakoid membranes are complex, however, and the source of electrons used to reduce P700 can vary.", "title": "Photosynthesis" }, { "paragraph_id": 8, "text": "The electron flow produced by the reaction center chlorophyll pigments is used to pump H ions across the thylakoid membrane, setting up a proton-motive force a chemiosmotic potential used mainly in the production of ATP (stored chemical energy) or to reduce NADP to NADPH. NADPH is a universal agent used to reduce CO2 into sugars as well as other biosynthetic reactions.", "title": "Photosynthesis" }, { "paragraph_id": 9, "text": "Reaction center chlorophyll–protein complexes are capable of directly absorbing light and performing charge separation events without the assistance of other chlorophyll pigments, but the probability of that happening under a given light intensity is small. Thus, the other chlorophylls in the photosystem and antenna pigment proteins all cooperatively absorb and funnel light energy to the reaction center. Besides chlorophyll a, there are other pigments, called accessory pigments, which occur in these pigment–protein antenna complexes.", "title": "Photosynthesis" }, { "paragraph_id": 10, "text": "Several chlorophylls are known. All are defined as derivatives of the parent chlorin by the presence of a fifth, ketone-containing ring beyond the four pyrrole-like rings. Most chlorophylls are classified as chlorins, which are reduced relatives of porphyrins (found in hemoglobin). They share a common biosynthetic pathway with porphyrins, including the precursor uroporphyrinogen III. Unlike hemes, which contain iron bound to the N4 center, most chlorophylls bind magnesium. The axial ligands attached to the Mg center are often omitted for clarity. Appended to the chlorin ring are various side chains, usually including a long phytyl chain (C20H39O). The most widely distributed form in terrestrial plants is chlorophyll a. The only difference between chlorophyll a and chlorophyll b is that the former has a methyl group where the latter has a formyl group. This difference causes a considerable difference in the absorption spectrum, allowing plants to absorb a greater portion of visible light.", "title": "Chemical structure" }, { "paragraph_id": 11, "text": "The structures of chlorophylls are summarized below:", "title": "Chemical structure" }, { "paragraph_id": 12, "text": "Chlorophyll e is reserved for a pigment that has been extracted from algae in 1966 but not chemically described. Besides the lettered chlophylls, a wide variety of sidechain modifications to the chlorophyll structures are known in the wild. For example, Prochlorococcus, a cyanobacterium, uses 8-vinyl Chl a and b.", "title": "Chemical structure" }, { "paragraph_id": 13, "text": "Chlorophylls can be extracted from the protein into organic solvents. In this way, the concentration of chlorophyll within a leaf can be estimated. Methods also exist to separate chlorophyll a and chlorophyll b.", "title": "Measurement of chlorophyll content" }, { "paragraph_id": 14, "text": "In diethyl ether, chlorophyll a has approximate absorbance maxima of 430 nm and 662 nm, while chlorophyll b has approximate maxima of 453 nm and 642 nm. The absorption peaks of chlorophyll a are at 465 nm and 665 nm. Chlorophyll a fluoresces at 673 nm (maximum) and 726 nm. The peak molar absorption coefficient of chlorophyll a exceeds 10 M cm, which is among the highest for small-molecule organic compounds. In 90% acetone-water, the peak absorption wavelengths of chlorophyll a are 430 nm and 664 nm; peaks for chlorophyll b are 460 nm and 647 nm; peaks for chlorophyll c1 are 442 nm and 630 nm; peaks for chlorophyll c2 are 444 nm and 630 nm; peaks for chlorophyll d are 401 nm, 455 nm and 696 nm.", "title": "Measurement of chlorophyll content" }, { "paragraph_id": 15, "text": "Ratio fluorescence emission can be used to measure chlorophyll content. By exciting chlorophyll a fluorescence at a lower wavelength, the ratio of chlorophyll fluorescence emission at 705±10 nm and 735±10 nm can provide a linear relationship of chlorophyll content when compared with chemical testing. The ratio F735/F700 provided a correlation value of r 0.96 compared with chemical testing in the range from 41 mg m up to 675 mg m. Gitelson also developed a formula for direct readout of chlorophyll content in mg m. The formula provided a reliable method of measuring chlorophyll content from 41 mg m up to 675 mg m with a correlation r value of 0.95.", "title": "Measurement of chlorophyll content" }, { "paragraph_id": 16, "text": "In some plants, chlorophyll is derived from glutamate and is synthesised along a branched biosynthetic pathway that is shared with heme and siroheme. Chlorophyll synthase is the enzyme that completes the biosynthesis of chlorophyll a:", "title": "Biosynthesis" }, { "paragraph_id": 17, "text": "This converion forms an ester of the carboxylic acid group in chlorophyllide a with the 20-carbon diterpene alcohol phytol. Chlorophyll b is made by the same enzyme acting on chlorophyllide b. The same is known for chlorophyll d and f, both made from corresponding chlorophyllides ultimately made from chlorophyllide a.", "title": "Biosynthesis" }, { "paragraph_id": 18, "text": "In Angiosperm plants, the later steps in the biosynthetic pathway are light-dependent. Such plants are pale (etiolated) if grown in darkness. Non-vascular plants and green algae have an additional light-independent enzyme and grow green even in darkness.", "title": "Biosynthesis" }, { "paragraph_id": 19, "text": "Chlorophyll is bound to proteins. Protochlorophyllide, one of the biosynthetic intermediates, occurs mostly in the free form and, under light conditions, acts as a photosensitizer, forming free radicals, which can be toxic to the plant. Hence, plants regulate the amount of this chlorophyll precursor. In angiosperms, this regulation is achieved at the step of aminolevulinic acid (ALA), one of the intermediate compounds in the biosynthesis pathway. Plants that are fed by ALA accumulate high and toxic levels of protochlorophyllide; so do the mutants with a damaged regulatory system.", "title": "Biosynthesis" }, { "paragraph_id": 20, "text": "The process of plant senescence involves the degradation of chlorophyll: for example the enzyme chlorophyllase (EC 3.1.1.14) hydrolyses the phytyl sidechain to reverse the reaction in which chlorophylls are biosynthesised from chlorophyllide a or b. Since chlorophyllide a can be converted to chlorophyllide b and the latter can be re-esterified to chlorophyll b, these processes allow cycling between chlorophylls a and b. Moreover, chlorophyll b can be directly reduced (via 7-hydroxychlorophyll a) back to chlorophyll a, completing the cycle. In later stages of senescence, chlorophyllides are converted to a group of colourless tetrapyrroles known as nonfluorescent chlorophyll catabolites (NCC's) with the general structure:", "title": "Senescence and the chlorophyll cycle" }, { "paragraph_id": 21, "text": "These compounds have also been identified in ripening fruits and they give characteristic autumn colours to deciduous plants.", "title": "Senescence and the chlorophyll cycle" }, { "paragraph_id": 22, "text": "The chlorophyll maps show milligrams of chlorophyll per cubic meter of seawater each month. Places where chlorophyll amounts were very low, indicating very low numbers of phytoplankton, are blue. Places where chlorophyll concentrations were high, meaning many phytoplankton were growing, are yellow. The observations come from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA's Aqua satellite. Land is dark gray, and places where MODIS could not collect data because of sea ice, polar darkness, or clouds are light gray. The highest chlorophyll concentrations, where tiny surface-dwelling ocean plants are thriving, are in cold polar waters or in places where ocean currents bring cold water to the surface, such as around the equator and along the shores of continents. It is not the cold water itself that stimulates the phytoplankton. Instead, the cool temperatures are often a sign that the water has welled up to the surface from deeper in the ocean, carrying nutrients that have built up over time. In polar waters, nutrients accumulate in surface waters during the dark winter months when plants cannot grow. When sunlight returns in the spring and summer, the plants flourish in high concentrations.", "title": "Distribution" }, { "paragraph_id": 23, "text": "Synthetic chlorophyll is registered as a food additive colorant, and its E number is E140. Chefs use chlorophyll to color a variety of foods and beverages green, such as pasta and spirits. Absinthe gains its green color naturally from the chlorophyll introduced through the large variety of herbs used in its production. Chlorophyll is not soluble in water, and it is first mixed with a small quantity of vegetable oil to obtain the desired solution.", "title": "Culinary use" }, { "paragraph_id": 24, "text": "A 2002 study found that \"leaves exposed to strong light contained degraded major antenna proteins, unlike those kept in the dark, which is consistent with studies on the illumination of isolated proteins\". This appeared to the authors as support for the hypothesis that \"active oxygen species play a role in vivo\" in the short-term behaviour of plants.", "title": "Biological use" } ]	Chlorophyll is any of several related green pigments found in cyanobacteria and in the chloroplasts of algae and plants. Its name is derived from the Greek words χλωρός, khloros and φύλλον, phyllon ("leaf"). Chlorophyll allow plants to absorb energy from light. Chlorophylls absorb light most strongly in the blue portion of the electromagnetic spectrum as well as the red portion. Conversely, it is a poor absorber of green and near-green portions of the spectrum. Hence chlorophyll-containing tissues appear green because green light, diffusively reflected by structures like cell walls, is less absorbed. Two types of chlorophyll exist in the photosystems of green plants: chlorophyll a and b.	2001-11-03T18:22:56Z	2023-12-23T11:47:15Z	[ "Template:Sup", "Template:Clear", "Template:Main", "Template:EC number", "Template:Cite dictionary", "Template:Botany", "Template:Plant Pigments", "Template:Short description", "Template:Lang", "Template:Val", "Template:Nowrap", "Template:Commons category", "Template:Math", "Template:Cite book", "Template:Redir", "Template:Transl", "Template:Legend", "Template:Nobr", "Template:Chem2", "Template:Reflist", "Template:Multiple image", "Template:Cn", "Template:Cite web", "Template:Cite journal", "Template:Authority control" ]	https://en.wikipedia.org/wiki/Chlorophyll
6,986	Carotene	The term carotene (also carotin, from the Latin carota, "carrot") is used for many related unsaturated hydrocarbon substances having the formula C40Hx, which are synthesized by plants but in general cannot be made by animals (with the exception of some aphids and spider mites which acquired the synthesizing genes from fungi). Carotenes are photosynthetic pigments important for photosynthesis. Carotenes contain no oxygen atoms. They absorb ultraviolet, violet, and blue light and scatter orange or red light, and (in low concentrations) yellow light. Carotenes are responsible for the orange colour of the carrot, after which this class of chemicals is named, and for the colours of many other fruits, vegetables and fungi (for example, sweet potatoes, chanterelle and orange cantaloupe melon). Carotenes are also responsible for the orange (but not all of the yellow) colours in dry foliage. They also (in lower concentrations) impart the yellow coloration to milk-fat and butter. Omnivorous animal species which are relatively poor converters of coloured dietary carotenoids to colourless retinoids, such as humans and chickens, have yellow-coloured body fat, as a result of the carotenoid retention from the vegetable portion of their diet. Carotenes contribute to photosynthesis by transmitting the light energy they absorb to chlorophyll. They also protect plant tissues by helping to absorb the energy from singlet oxygen, an excited form of the oxygen molecule O2 which is formed during photosynthesis. β-Carotene is composed of two retinyl groups, and is broken down in the mucosa of the human small intestine by β-carotene 15,15'-monooxygenase to retinal, a form of vitamin A. β-Carotene can be stored in the liver and body fat and converted to retinal as needed, thus making it a form of vitamin A for humans and some other mammals. The carotenes α-carotene and γ-carotene, due to their single retinyl group (β-ionone ring), also have some vitamin A activity (though less than β-carotene), as does the xanthophyll carotenoid β-cryptoxanthin. All other carotenoids, including lycopene, have no beta-ring and thus no vitamin A activity (although they may have antioxidant activity and thus biological activity in other ways). Animal species differ greatly in their ability to convert retinyl (beta-ionone) containing carotenoids to retinals. Carnivores in general are poor converters of dietary ionone-containing carotenoids. Pure carnivores such as ferrets lack β-carotene 15,15'-monooxygenase and cannot convert any carotenoids to retinals at all (resulting in carotenes not being a form of vitamin A for this species); while cats can convert a trace of β-carotene to retinol, although the amount is totally insufficient for meeting their daily retinol needs. Carotenes are polyunsaturated hydrocarbons containing 40 carbon atoms per molecule, variable numbers of hydrogen atoms, and no other elements. Some carotenes are terminated by rings, on one or both ends of the molecule. All are coloured, due to the presence of conjugated double bonds. Carotenes are tetraterpenes, meaning that they are derived from eight 5-carbon isoprene units (or four 10-carbon terpene units). Carotenes are found in plants in two primary forms designated by characters from the Greek alphabet: alpha-carotene (α-carotene) and beta-carotene (β-carotene). Gamma-, delta-, epsilon-, and zeta-carotene (γ, δ, ε, and ζ-carotene) also exist. Since they are hydrocarbons, and therefore contain no oxygen, carotenes are fat-soluble and insoluble in water (in contrast with other carotenoids, the xanthophylls, which contain oxygen and thus are less chemically hydrophobic). The discovery of carotene from carrot juice is credited to Heinrich Wilhelm Ferdinand Wackenroder, a finding made during a search for antihelminthics, which he published in 1831. He obtained it in small ruby-red flakes soluble in ether, which when dissolved in fats gave 'a beautiful yellow colour'. William Christopher Zeise recognised its hydrocarbon nature in 1847, but his analyses gave him a composition of C5H8. It was Léon-Albert Arnaud in 1886 who confirmed its hydrocarbon nature and gave the formula C26H38, which is close to the theoretical composition of C40H56. Adolf Lieben in studies, also published in 1886, of the colouring matter in corpora lutea, first came across carotenoids in animal tissue, but did not recognise the nature of the pigment. Johann Ludwig Wilhelm Thudichum, in 1868–1869, after stereoscopic spectral examination, applied the term 'luteine' (lutein) to this class of yellow crystallizable substances found in animals and plants. Richard Martin Willstätter, who gained the Nobel Prize in Chemistry in 1915, mainly for his work on chlorophyll, assigned the composition of C40H56, distinguishing it from the similar but oxygenated xanthophyll, C40H56O2. With Heinrich Escher, in 1910, lycopene was isolated from tomatoes and shown to be an isomer of carotene. Later work by Escher also differentiated the 'luteal' pigments in egg yolk from that of the carotenes in cow corpus luteum. The following foods contain carotenes in notable amounts: Absorption from these foods is enhanced if eaten with fats, as carotenes are fat soluble, and if the food is cooked for a few minutes until the plant cell wall splits and the color is released into any liquid. 12 μg of dietary β-carotene supplies the equivalent of 1 μg of retinol, and 24 µg of α-carotene or β-cryptoxanthin provides the equivalent of 1 µg of retinol. The two primary isomers of carotene, α-carotene and β-carotene, differ in the position of a double bond (and thus a hydrogen) in the cyclic group at one end (the right end in the diagram at right). β-Carotene is the more common form and can be found in yellow, orange, and green leafy fruits and vegetables. As a rule of thumb, the greater the intensity of the orange colour of the fruit or vegetable, the more β-carotene it contains. Carotene protects plant cells against the destructive effects of ultraviolet light so β-Carotene is an antioxidant. An article on the American Cancer Society says that The Cancer Research Campaign has called for warning labels on β-carotene supplements to caution smokers that such supplements may increase the risk of lung cancer. The New England Journal of Medicine published an article in 1994 about a trial which examined the relationship between daily supplementation of β-carotene and vitamin E (α-tocopherol) and the incidence of lung cancer. The study was done using supplements and researchers were aware of the epidemiological correlation between carotenoid-rich fruits and vegetables and lower lung cancer rates. The research concluded that no reduction in lung cancer was found in the participants using these supplements, and furthermore, these supplements may, in fact, have harmful effects. The Journal of the National Cancer Institute and The New England Journal of Medicine published articles in 1996 about a trial with a goal to determine if vitamin A (in the form of retinyl palmitate) and β-carotene (at about 30 mg/day, which is 10 times the Reference Daily Intake) supplements had any beneficial effects to prevent cancer. The results indicated an increased risk of lung and prostate cancers for the participants who consumed the β-carotene supplement and who had lung irritation from smoking or asbestos exposure, causing the trial to be stopped early. A review of all randomized controlled trials in the scientific literature by the Cochrane Collaboration published in JAMA in 2007 found that synthetic β-carotene increased mortality by 1-8 % (Relative Risk 1.05, 95% confidence interval 1.01–1.08). However, this meta-analysis included two large studies of smokers, so it is not clear that the results apply to the general population. The review only studied the influence of synthetic antioxidants and the results should not be translated to potential effects of fruits and vegetables. Oral β-carotene is prescribed to people suffering from erythropoietic protoporphyria. It provides them some relief from photosensitivity. Carotenemia or hypercarotenemia is excess carotene, but unlike excess vitamin A, carotene is non-toxic. Although hypercarotenemia is not particularly dangerous, it can lead to an oranging of the skin (carotenodermia), but not the conjunctiva of eyes (thus easily distinguishing it visually from jaundice). It is most commonly associated with consumption of an abundance of carrots, but it also can be a medical sign of more dangerous conditions. Carotenes are produced in a general manner for other terpenoids and terpenes, i.e. by coupling, cyclization, and oxygenation reactions of isoprene derivatives. Lycopene is the key precursor to carotenoids. It is formed by coupling of geranylgeranyl pyrophosphate and geranyllinally pyrophosphate. Most of the world's synthetic supply of carotene comes from a manufacturing complex located in Freeport, Texas and owned by DSM. The other major supplier BASF also uses a chemical process to produce β-carotene. Together these suppliers account for about 85% of the β-carotene on the market. In Spain Vitatene produces natural β-carotene from fungus Blakeslea trispora, as does DSM but at much lower amount when compared to its synthetic β-carotene operation. In Australia, organic β-carotene is produced by Aquacarotene Limited from dried marine algae Dunaliella salina grown in harvesting ponds situated in Karratha, Western Australia. BASF Australia is also producing β-carotene from microalgae grown in two sites in Australia that are the world's largest algae farms. In Portugal, the industrial biotechnology company Biotrend is producing natural all-trans-β-carotene from a non-genetically modified bacteria of the genus Sphingomonas isolated from soil. Carotenes are also found in palm oil, corn, and in the milk of dairy cows, causing cow's milk to be light yellow, depending on the feed of the cattle, and the amount of fat in the milk (high-fat milks, such as those produced by Guernsey cows, tend to be yellower because their fat content causes them to contain more carotene). Carotenes are also found in some species of termites, where they apparently have been picked up from the diet of the insects. There are currently two commonly used methods of total synthesis of β-carotene. The first was developed by BASF and is based on the Wittig reaction with Wittig himself as patent holder: The second is a Grignard reaction, elaborated by Hoffman-La Roche from the original synthesis of Inhoffen et al. They are both symmetrical; the BASF synthesis is C20 + C20, and the Hoffman-La Roche synthesis is C19 + C2 + C19. Carotenes are carotenoids containing no oxygen. Carotenoids containing some oxygen are known as xanthophylls. The two ends of the β-carotene molecule are structurally identical, and are called β-rings. Specifically, the group of nine carbon atoms at each end form a β-ring. The α-carotene molecule has a β-ring at one end; the other end is called an ε-ring. There is no such thing as an "α-ring". These and similar names for the ends of the carotenoid molecules form the basis of a systematic naming scheme, according to which: ζ-Carotene is the biosynthetic precursor of neurosporene, which is the precursor of lycopene, which, in turn, is the precursor of the carotenes α through ε. Carotene is used to colour products such as juice, cakes, desserts, butter and margarine. It is approved for use as a food additive in the EU (listed as additive E160a) Australia and New Zealand (listed as 160a) and the US.	[ { "paragraph_id": 0, "text": "The term carotene (also carotin, from the Latin carota, \"carrot\") is used for many related unsaturated hydrocarbon substances having the formula C40Hx, which are synthesized by plants but in general cannot be made by animals (with the exception of some aphids and spider mites which acquired the synthesizing genes from fungi). Carotenes are photosynthetic pigments important for photosynthesis. Carotenes contain no oxygen atoms. They absorb ultraviolet, violet, and blue light and scatter orange or red light, and (in low concentrations) yellow light.", "title": "" }, { "paragraph_id": 1, "text": "Carotenes are responsible for the orange colour of the carrot, after which this class of chemicals is named, and for the colours of many other fruits, vegetables and fungi (for example, sweet potatoes, chanterelle and orange cantaloupe melon). Carotenes are also responsible for the orange (but not all of the yellow) colours in dry foliage. They also (in lower concentrations) impart the yellow coloration to milk-fat and butter. Omnivorous animal species which are relatively poor converters of coloured dietary carotenoids to colourless retinoids, such as humans and chickens, have yellow-coloured body fat, as a result of the carotenoid retention from the vegetable portion of their diet.", "title": "" }, { "paragraph_id": 2, "text": "Carotenes contribute to photosynthesis by transmitting the light energy they absorb to chlorophyll. They also protect plant tissues by helping to absorb the energy from singlet oxygen, an excited form of the oxygen molecule O2 which is formed during photosynthesis.", "title": "" }, { "paragraph_id": 3, "text": "β-Carotene is composed of two retinyl groups, and is broken down in the mucosa of the human small intestine by β-carotene 15,15'-monooxygenase to retinal, a form of vitamin A. β-Carotene can be stored in the liver and body fat and converted to retinal as needed, thus making it a form of vitamin A for humans and some other mammals. The carotenes α-carotene and γ-carotene, due to their single retinyl group (β-ionone ring), also have some vitamin A activity (though less than β-carotene), as does the xanthophyll carotenoid β-cryptoxanthin. All other carotenoids, including lycopene, have no beta-ring and thus no vitamin A activity (although they may have antioxidant activity and thus biological activity in other ways).", "title": "" }, { "paragraph_id": 4, "text": "Animal species differ greatly in their ability to convert retinyl (beta-ionone) containing carotenoids to retinals. Carnivores in general are poor converters of dietary ionone-containing carotenoids. Pure carnivores such as ferrets lack β-carotene 15,15'-monooxygenase and cannot convert any carotenoids to retinals at all (resulting in carotenes not being a form of vitamin A for this species); while cats can convert a trace of β-carotene to retinol, although the amount is totally insufficient for meeting their daily retinol needs.", "title": "" }, { "paragraph_id": 5, "text": "Carotenes are polyunsaturated hydrocarbons containing 40 carbon atoms per molecule, variable numbers of hydrogen atoms, and no other elements. Some carotenes are terminated by rings, on one or both ends of the molecule. All are coloured, due to the presence of conjugated double bonds. Carotenes are tetraterpenes, meaning that they are derived from eight 5-carbon isoprene units (or four 10-carbon terpene units).", "title": "Molecular structure" }, { "paragraph_id": 6, "text": "Carotenes are found in plants in two primary forms designated by characters from the Greek alphabet: alpha-carotene (α-carotene) and beta-carotene (β-carotene). Gamma-, delta-, epsilon-, and zeta-carotene (γ, δ, ε, and ζ-carotene) also exist. Since they are hydrocarbons, and therefore contain no oxygen, carotenes are fat-soluble and insoluble in water (in contrast with other carotenoids, the xanthophylls, which contain oxygen and thus are less chemically hydrophobic).", "title": "Molecular structure" }, { "paragraph_id": 7, "text": "The discovery of carotene from carrot juice is credited to Heinrich Wilhelm Ferdinand Wackenroder, a finding made during a search for antihelminthics, which he published in 1831. He obtained it in small ruby-red flakes soluble in ether, which when dissolved in fats gave 'a beautiful yellow colour'. William Christopher Zeise recognised its hydrocarbon nature in 1847, but his analyses gave him a composition of C5H8. It was Léon-Albert Arnaud in 1886 who confirmed its hydrocarbon nature and gave the formula C26H38, which is close to the theoretical composition of C40H56. Adolf Lieben in studies, also published in 1886, of the colouring matter in corpora lutea, first came across carotenoids in animal tissue, but did not recognise the nature of the pigment. Johann Ludwig Wilhelm Thudichum, in 1868–1869, after stereoscopic spectral examination, applied the term 'luteine' (lutein) to this class of yellow crystallizable substances found in animals and plants. Richard Martin Willstätter, who gained the Nobel Prize in Chemistry in 1915, mainly for his work on chlorophyll, assigned the composition of C40H56, distinguishing it from the similar but oxygenated xanthophyll, C40H56O2. With Heinrich Escher, in 1910, lycopene was isolated from tomatoes and shown to be an isomer of carotene. Later work by Escher also differentiated the 'luteal' pigments in egg yolk from that of the carotenes in cow corpus luteum.", "title": "History" }, { "paragraph_id": 8, "text": "The following foods contain carotenes in notable amounts:", "title": "Dietary sources" }, { "paragraph_id": 9, "text": "Absorption from these foods is enhanced if eaten with fats, as carotenes are fat soluble, and if the food is cooked for a few minutes until the plant cell wall splits and the color is released into any liquid. 12 μg of dietary β-carotene supplies the equivalent of 1 μg of retinol, and 24 µg of α-carotene or β-cryptoxanthin provides the equivalent of 1 µg of retinol.", "title": "Dietary sources" }, { "paragraph_id": 10, "text": "The two primary isomers of carotene, α-carotene and β-carotene, differ in the position of a double bond (and thus a hydrogen) in the cyclic group at one end (the right end in the diagram at right).", "title": "Forms of carotene" }, { "paragraph_id": 11, "text": "β-Carotene is the more common form and can be found in yellow, orange, and green leafy fruits and vegetables. As a rule of thumb, the greater the intensity of the orange colour of the fruit or vegetable, the more β-carotene it contains.", "title": "Forms of carotene" }, { "paragraph_id": 12, "text": "Carotene protects plant cells against the destructive effects of ultraviolet light so β-Carotene is an antioxidant.", "title": "Forms of carotene" }, { "paragraph_id": 13, "text": "An article on the American Cancer Society says that The Cancer Research Campaign has called for warning labels on β-carotene supplements to caution smokers that such supplements may increase the risk of lung cancer.", "title": "β-Carotene and physiology" }, { "paragraph_id": 14, "text": "The New England Journal of Medicine published an article in 1994 about a trial which examined the relationship between daily supplementation of β-carotene and vitamin E (α-tocopherol) and the incidence of lung cancer. The study was done using supplements and researchers were aware of the epidemiological correlation between carotenoid-rich fruits and vegetables and lower lung cancer rates. The research concluded that no reduction in lung cancer was found in the participants using these supplements, and furthermore, these supplements may, in fact, have harmful effects.", "title": "β-Carotene and physiology" }, { "paragraph_id": 15, "text": "The Journal of the National Cancer Institute and The New England Journal of Medicine published articles in 1996 about a trial with a goal to determine if vitamin A (in the form of retinyl palmitate) and β-carotene (at about 30 mg/day, which is 10 times the Reference Daily Intake) supplements had any beneficial effects to prevent cancer. The results indicated an increased risk of lung and prostate cancers for the participants who consumed the β-carotene supplement and who had lung irritation from smoking or asbestos exposure, causing the trial to be stopped early.", "title": "β-Carotene and physiology" }, { "paragraph_id": 16, "text": "A review of all randomized controlled trials in the scientific literature by the Cochrane Collaboration published in JAMA in 2007 found that synthetic β-carotene increased mortality by 1-8 % (Relative Risk 1.05, 95% confidence interval 1.01–1.08). However, this meta-analysis included two large studies of smokers, so it is not clear that the results apply to the general population. The review only studied the influence of synthetic antioxidants and the results should not be translated to potential effects of fruits and vegetables.", "title": "β-Carotene and physiology" }, { "paragraph_id": 17, "text": "Oral β-carotene is prescribed to people suffering from erythropoietic protoporphyria. It provides them some relief from photosensitivity.", "title": "β-Carotene and physiology" }, { "paragraph_id": 18, "text": "Carotenemia or hypercarotenemia is excess carotene, but unlike excess vitamin A, carotene is non-toxic. Although hypercarotenemia is not particularly dangerous, it can lead to an oranging of the skin (carotenodermia), but not the conjunctiva of eyes (thus easily distinguishing it visually from jaundice). It is most commonly associated with consumption of an abundance of carrots, but it also can be a medical sign of more dangerous conditions.", "title": "β-Carotene and physiology" }, { "paragraph_id": 19, "text": "Carotenes are produced in a general manner for other terpenoids and terpenes, i.e. by coupling, cyclization, and oxygenation reactions of isoprene derivatives. Lycopene is the key precursor to carotenoids. It is formed by coupling of geranylgeranyl pyrophosphate and geranyllinally pyrophosphate.", "title": "Production" }, { "paragraph_id": 20, "text": "Most of the world's synthetic supply of carotene comes from a manufacturing complex located in Freeport, Texas and owned by DSM. The other major supplier BASF also uses a chemical process to produce β-carotene. Together these suppliers account for about 85% of the β-carotene on the market. In Spain Vitatene produces natural β-carotene from fungus Blakeslea trispora, as does DSM but at much lower amount when compared to its synthetic β-carotene operation. In Australia, organic β-carotene is produced by Aquacarotene Limited from dried marine algae Dunaliella salina grown in harvesting ponds situated in Karratha, Western Australia. BASF Australia is also producing β-carotene from microalgae grown in two sites in Australia that are the world's largest algae farms. In Portugal, the industrial biotechnology company Biotrend is producing natural all-trans-β-carotene from a non-genetically modified bacteria of the genus Sphingomonas isolated from soil.", "title": "Production" }, { "paragraph_id": 21, "text": "Carotenes are also found in palm oil, corn, and in the milk of dairy cows, causing cow's milk to be light yellow, depending on the feed of the cattle, and the amount of fat in the milk (high-fat milks, such as those produced by Guernsey cows, tend to be yellower because their fat content causes them to contain more carotene).", "title": "Production" }, { "paragraph_id": 22, "text": "Carotenes are also found in some species of termites, where they apparently have been picked up from the diet of the insects.", "title": "Production" }, { "paragraph_id": 23, "text": "There are currently two commonly used methods of total synthesis of β-carotene. The first was developed by BASF and is based on the Wittig reaction with Wittig himself as patent holder:", "title": "Production" }, { "paragraph_id": 24, "text": "The second is a Grignard reaction, elaborated by Hoffman-La Roche from the original synthesis of Inhoffen et al. They are both symmetrical; the BASF synthesis is C20 + C20, and the Hoffman-La Roche synthesis is C19 + C2 + C19.", "title": "Production" }, { "paragraph_id": 25, "text": "Carotenes are carotenoids containing no oxygen. Carotenoids containing some oxygen are known as xanthophylls.", "title": "Nomenclature" }, { "paragraph_id": 26, "text": "The two ends of the β-carotene molecule are structurally identical, and are called β-rings. Specifically, the group of nine carbon atoms at each end form a β-ring.", "title": "Nomenclature" }, { "paragraph_id": 27, "text": "The α-carotene molecule has a β-ring at one end; the other end is called an ε-ring. There is no such thing as an \"α-ring\".", "title": "Nomenclature" }, { "paragraph_id": 28, "text": "These and similar names for the ends of the carotenoid molecules form the basis of a systematic naming scheme, according to which:", "title": "Nomenclature" }, { "paragraph_id": 29, "text": "ζ-Carotene is the biosynthetic precursor of neurosporene, which is the precursor of lycopene, which, in turn, is the precursor of the carotenes α through ε.", "title": "Nomenclature" }, { "paragraph_id": 30, "text": "Carotene is used to colour products such as juice, cakes, desserts, butter and margarine. It is approved for use as a food additive in the EU (listed as additive E160a) Australia and New Zealand (listed as 160a) and the US.", "title": "Food additive" } ]	The term carotene (also carotin, from the Latin carota, "carrot") is used for many related unsaturated hydrocarbon substances having the formula C40Hx, which are synthesized by plants but in general cannot be made by animals (with the exception of some aphids and spider mites which acquired the synthesizing genes from fungi). Carotenes are photosynthetic pigments important for photosynthesis. Carotenes contain no oxygen atoms. They absorb ultraviolet, violet, and blue light and scatter orange or red light, and (in low concentrations) yellow light. Carotenes are responsible for the orange colour of the carrot, after which this class of chemicals is named, and for the colours of many other fruits, vegetables and fungi (for example, sweet potatoes, chanterelle and orange cantaloupe melon). Carotenes are also responsible for the orange (but not all of the yellow) colours in dry foliage. They also (in lower concentrations) impart the yellow coloration to milk-fat and butter. Omnivorous animal species which are relatively poor converters of coloured dietary carotenoids to colourless retinoids, such as humans and chickens, have yellow-coloured body fat, as a result of the carotenoid retention from the vegetable portion of their diet. Carotenes contribute to photosynthesis by transmitting the light energy they absorb to chlorophyll. They also protect plant tissues by helping to absorb the energy from singlet oxygen, an excited form of the oxygen molecule O2 which is formed during photosynthesis. β-Carotene is composed of two retinyl groups, and is broken down in the mucosa of the human small intestine by β-carotene 15,15'-monooxygenase to retinal, a form of vitamin A. β-Carotene can be stored in the liver and body fat and converted to retinal as needed, thus making it a form of vitamin A for humans and some other mammals. The carotenes α-carotene and γ-carotene, due to their single retinyl group (β-ionone ring), also have some vitamin A activity (though less than β-carotene), as does the xanthophyll carotenoid β-cryptoxanthin. All other carotenoids, including lycopene, have no beta-ring and thus no vitamin A activity (although they may have antioxidant activity and thus biological activity in other ways). Animal species differ greatly in their ability to convert retinyl (beta-ionone) containing carotenoids to retinals. Carnivores in general are poor converters of dietary ionone-containing carotenoids. Pure carnivores such as ferrets lack β-carotene 15,15'-monooxygenase and cannot convert any carotenoids to retinals at all (resulting in carotenes not being a form of vitamin A for this species); while cats can convert a trace of β-carotene to retinol, although the amount is totally insufficient for meeting their daily retinol needs.	2002-02-25T15:43:11Z	2023-11-07T19:05:20Z	[ "Template:Cite web", "Template:Cite patent", "Template:Carotenoids", "Template:Short description", "Template:For", "Template:Div col end", "Template:Cite dictionary", "Template:Cite journal", "Template:MeshName", "Template:Distinguish", "Template:Main", "Template:Reflist", "Template:Plant Pigments", "Template:Carrots", "Template:Div col", "Template:More citations needed section", "Template:Cite book", "Template:Authority control" ]	https://en.wikipedia.org/wiki/Carotene
6,988	Cyclic adenosine monophosphate	Cyclic adenosine monophosphate (cAMP, cyclic AMP, or 3',5'-cyclic adenosine monophosphate) is a second messenger, or cellular signal occurring within cells, that is important in many biological processes. cAMP is a derivative of adenosine triphosphate (ATP) and used for intracellular signal transduction in many different organisms, conveying the cAMP-dependent pathway. Earl Sutherland of Vanderbilt University won a Nobel Prize in Physiology or Medicine in 1971 "for his discoveries concerning the mechanisms of the action of hormones", especially epinephrine, via second messengers (such as cyclic adenosine monophosphate, cyclic AMP). Cyclic AMP is synthesized from ATP by adenylate cyclase located on the inner side of the plasma membrane and anchored at various locations in the interior of the cell. Adenylate cyclase is activated by a range of signaling molecules through the activation of adenylate cyclase stimulatory G (Gs)-protein-coupled receptors. Adenylate cyclase is inhibited by agonists of adenylate cyclase inhibitory G (Gi)-protein-coupled receptors. Liver adenylate cyclase responds more strongly to glucagon, and muscle adenylate cyclase responds more strongly to adrenaline. cAMP decomposition into AMP is catalyzed by the enzyme phosphodiesterase. cAMP is a second messenger, used for intracellular signal transduction, such as transferring into cells the effects of hormones like glucagon and adrenaline, which cannot pass through the plasma membrane. It is also involved in the activation of protein kinases. In addition, cAMP binds to and regulates the function of ion channels such as the HCN channels and a few other cyclic nucleotide-binding proteins such as Epac1 and RAPGEF2. cAMP is associated with kinases function in several biochemical processes, including the regulation of glycogen, sugar, and lipid metabolism. In eukaryotes, cyclic AMP works by activating protein kinase A (PKA, or cAMP-dependent protein kinase). PKA is normally inactive as a tetrameric holoenzyme, consisting of two catalytic and two regulatory units (C2R2), with the regulatory units blocking the catalytic centers of the catalytic units. Cyclic AMP binds to specific locations on the regulatory units of the protein kinase, and causes dissociation between the regulatory and catalytic subunits, thus enabling those catalytic units to phosphorylate substrate proteins. The active subunits catalyze the transfer of phosphate from ATP to specific serine or threonine residues of protein substrates. The phosphorylated proteins may act directly on the cell's ion channels, or may become activated or inhibited enzymes. Protein kinase A can also phosphorylate specific proteins that bind to promoter regions of DNA, causing increases in transcription. Not all protein kinases respond to cAMP. Several classes of protein kinases, including protein kinase C, are not cAMP-dependent. Further effects mainly depend on cAMP-dependent protein kinase, which vary based on the type of cell. Still, there are some minor PKA-independent functions of cAMP, e.g., activation of calcium channels, providing a minor pathway by which growth hormone-releasing hormone causes a release of growth hormone. However, the view that the majority of the effects of cAMP are controlled by PKA is an outdated one. In 1998 a family of cAMP-sensitive proteins with guanine nucleotide exchange factor (GEF) activity was discovered. These are termed Exchange proteins activated by cAMP (Epac) and the family comprises Epac1 and Epac2. The mechanism of activation is similar to that of PKA: the GEF domain is usually masked by the N-terminal region containing the cAMP binding domain. When cAMP binds, the domain dissociates and exposes the now-active GEF domain, allowing Epac to activate small Ras-like GTPase proteins, such as Rap1. In the species Dictyostelium discoideum, cAMP acts outside the cell as a secreted signal. The chemotactic aggregation of cells is organized by periodic waves of cAMP that propagate between cells over distances as large as several centimetres. The waves are the result of a regulated production and secretion of extracellular cAMP and a spontaneous biological oscillator that initiates the waves at centers of territories. In bacteria, the level of cAMP varies depending on the medium used for growth. In particular, cAMP is low when glucose is the carbon source. This occurs through inhibition of the cAMP-producing enzyme, adenylate cyclase, as a side-effect of glucose transport into the cell. The transcription factor cAMP receptor protein (CRP) also called CAP (catabolite gene activator protein) forms a complex with cAMP and thereby is activated to bind to DNA. CRP-cAMP increases expression of a large number of genes, including some encoding enzymes that can supply energy independent of glucose. cAMP, for example, is involved in the positive regulation of the lac operon. In an environment with a low glucose concentration, cAMP accumulates and binds to the allosteric site on CRP (cAMP receptor protein), a transcription activator protein. The protein assumes its active shape and binds to a specific site upstream of the lac promoter, making it easier for RNA polymerase to bind to the adjacent promoter to start transcription of the lac operon, increasing the rate of lac operon transcription. With a high glucose concentration, the cAMP concentration decreases, and the CRP disengages from the lac operon. Since cyclic AMP is a second messenger and plays vital role in cell signalling, it has been implicated in various disorders but not restricted to the roles given below: Some research has suggested that a deregulation of cAMP pathways and an aberrant activation of cAMP-controlled genes is linked to the growth of some cancers. Recent research suggests that cAMP affects the function of higher-order thinking in the prefrontal cortex through its regulation of ion channels called hyperpolarization-activated cyclic nucleotide-gated channels (HCN). When cAMP stimulates the HCN, the channels open, closing the brain cell to communication and thus interfering with the function of the prefrontal cortex. This research, especially the cognitive deficits in age-related illnesses and ADHD, is of interest to researchers studying the brain. cAMP is involved in activation of trigeminocervical system leading to neurogenic inflammation and causing migraine. Disrupted functioning of cAMP has been noted as one of the mechanisms of several bacterial exotoxins. They can be subgrouped into two distinct categories: Forskolin is commonly used as a tool in biochemistry to raise levels of cAMP in the study and research of cell physiology.	[ { "paragraph_id": 0, "text": "Cyclic adenosine monophosphate (cAMP, cyclic AMP, or 3',5'-cyclic adenosine monophosphate) is a second messenger, or cellular signal occurring within cells, that is important in many biological processes. cAMP is a derivative of adenosine triphosphate (ATP) and used for intracellular signal transduction in many different organisms, conveying the cAMP-dependent pathway.", "title": "" }, { "paragraph_id": 1, "text": "Earl Sutherland of Vanderbilt University won a Nobel Prize in Physiology or Medicine in 1971 \"for his discoveries concerning the mechanisms of the action of hormones\", especially epinephrine, via second messengers (such as cyclic adenosine monophosphate, cyclic AMP).", "title": "History" }, { "paragraph_id": 2, "text": "Cyclic AMP is synthesized from ATP by adenylate cyclase located on the inner side of the plasma membrane and anchored at various locations in the interior of the cell. Adenylate cyclase is activated by a range of signaling molecules through the activation of adenylate cyclase stimulatory G (Gs)-protein-coupled receptors. Adenylate cyclase is inhibited by agonists of adenylate cyclase inhibitory G (Gi)-protein-coupled receptors. Liver adenylate cyclase responds more strongly to glucagon, and muscle adenylate cyclase responds more strongly to adrenaline.", "title": "Synthesis" }, { "paragraph_id": 3, "text": "cAMP decomposition into AMP is catalyzed by the enzyme phosphodiesterase.", "title": "Synthesis" }, { "paragraph_id": 4, "text": "cAMP is a second messenger, used for intracellular signal transduction, such as transferring into cells the effects of hormones like glucagon and adrenaline, which cannot pass through the plasma membrane. It is also involved in the activation of protein kinases. In addition, cAMP binds to and regulates the function of ion channels such as the HCN channels and a few other cyclic nucleotide-binding proteins such as Epac1 and RAPGEF2.", "title": "Functions" }, { "paragraph_id": 5, "text": "cAMP is associated with kinases function in several biochemical processes, including the regulation of glycogen, sugar, and lipid metabolism.", "title": "Functions" }, { "paragraph_id": 6, "text": "In eukaryotes, cyclic AMP works by activating protein kinase A (PKA, or cAMP-dependent protein kinase). PKA is normally inactive as a tetrameric holoenzyme, consisting of two catalytic and two regulatory units (C2R2), with the regulatory units blocking the catalytic centers of the catalytic units.", "title": "Functions" }, { "paragraph_id": 7, "text": "Cyclic AMP binds to specific locations on the regulatory units of the protein kinase, and causes dissociation between the regulatory and catalytic subunits, thus enabling those catalytic units to phosphorylate substrate proteins.", "title": "Functions" }, { "paragraph_id": 8, "text": "The active subunits catalyze the transfer of phosphate from ATP to specific serine or threonine residues of protein substrates. The phosphorylated proteins may act directly on the cell's ion channels, or may become activated or inhibited enzymes. Protein kinase A can also phosphorylate specific proteins that bind to promoter regions of DNA, causing increases in transcription. Not all protein kinases respond to cAMP. Several classes of protein kinases, including protein kinase C, are not cAMP-dependent.", "title": "Functions" }, { "paragraph_id": 9, "text": "Further effects mainly depend on cAMP-dependent protein kinase, which vary based on the type of cell.", "title": "Functions" }, { "paragraph_id": 10, "text": "Still, there are some minor PKA-independent functions of cAMP, e.g., activation of calcium channels, providing a minor pathway by which growth hormone-releasing hormone causes a release of growth hormone.", "title": "Functions" }, { "paragraph_id": 11, "text": "However, the view that the majority of the effects of cAMP are controlled by PKA is an outdated one. In 1998 a family of cAMP-sensitive proteins with guanine nucleotide exchange factor (GEF) activity was discovered. These are termed Exchange proteins activated by cAMP (Epac) and the family comprises Epac1 and Epac2. The mechanism of activation is similar to that of PKA: the GEF domain is usually masked by the N-terminal region containing the cAMP binding domain. When cAMP binds, the domain dissociates and exposes the now-active GEF domain, allowing Epac to activate small Ras-like GTPase proteins, such as Rap1.", "title": "Functions" }, { "paragraph_id": 12, "text": "In the species Dictyostelium discoideum, cAMP acts outside the cell as a secreted signal. The chemotactic aggregation of cells is organized by periodic waves of cAMP that propagate between cells over distances as large as several centimetres. The waves are the result of a regulated production and secretion of extracellular cAMP and a spontaneous biological oscillator that initiates the waves at centers of territories.", "title": "Functions" }, { "paragraph_id": 13, "text": "In bacteria, the level of cAMP varies depending on the medium used for growth. In particular, cAMP is low when glucose is the carbon source. This occurs through inhibition of the cAMP-producing enzyme, adenylate cyclase, as a side-effect of glucose transport into the cell. The transcription factor cAMP receptor protein (CRP) also called CAP (catabolite gene activator protein) forms a complex with cAMP and thereby is activated to bind to DNA. CRP-cAMP increases expression of a large number of genes, including some encoding enzymes that can supply energy independent of glucose.", "title": "Functions" }, { "paragraph_id": 14, "text": "cAMP, for example, is involved in the positive regulation of the lac operon. In an environment with a low glucose concentration, cAMP accumulates and binds to the allosteric site on CRP (cAMP receptor protein), a transcription activator protein. The protein assumes its active shape and binds to a specific site upstream of the lac promoter, making it easier for RNA polymerase to bind to the adjacent promoter to start transcription of the lac operon, increasing the rate of lac operon transcription. With a high glucose concentration, the cAMP concentration decreases, and the CRP disengages from the lac operon.", "title": "Functions" }, { "paragraph_id": 15, "text": "Since cyclic AMP is a second messenger and plays vital role in cell signalling, it has been implicated in various disorders but not restricted to the roles given below:", "title": "Pathology" }, { "paragraph_id": 16, "text": "Some research has suggested that a deregulation of cAMP pathways and an aberrant activation of cAMP-controlled genes is linked to the growth of some cancers.", "title": "Pathology" }, { "paragraph_id": 17, "text": "Recent research suggests that cAMP affects the function of higher-order thinking in the prefrontal cortex through its regulation of ion channels called hyperpolarization-activated cyclic nucleotide-gated channels (HCN). When cAMP stimulates the HCN, the channels open, closing the brain cell to communication and thus interfering with the function of the prefrontal cortex. This research, especially the cognitive deficits in age-related illnesses and ADHD, is of interest to researchers studying the brain.", "title": "Pathology" }, { "paragraph_id": 18, "text": "cAMP is involved in activation of trigeminocervical system leading to neurogenic inflammation and causing migraine.", "title": "Pathology" }, { "paragraph_id": 19, "text": "Disrupted functioning of cAMP has been noted as one of the mechanisms of several bacterial exotoxins.", "title": "Pathology" }, { "paragraph_id": 20, "text": "They can be subgrouped into two distinct categories:", "title": "Pathology" }, { "paragraph_id": 21, "text": "Forskolin is commonly used as a tool in biochemistry to raise levels of cAMP in the study and research of cell physiology.", "title": "Uses" } ]	Cyclic adenosine monophosphate is a second messenger, or cellular signal occurring within cells, that is important in many biological processes. cAMP is a derivative of adenosine triphosphate (ATP) and used for intracellular signal transduction in many different organisms, conveying the cAMP-dependent pathway.	2001-11-03T14:59:55Z	2023-12-11T14:58:10Z	[ "Template:Short description", "Template:Main", "Template:Cite journal", "Template:Cite book", "Template:Intracellular signaling peptides and proteins", "Template:Nucleobases, nucleosides, and nucleotides", "Template:Chembox", "Template:See also", "Template:Main article", "Template:Cite web", "Template:Cite news" ]	https://en.wikipedia.org/wiki/Cyclic_adenosine_monophosphate
6,991	Cimabue	Cimabue (Italian: [tʃimaˈbuːe]), c. 1240 – 1302, was an Italian painter and designer of mosaics from Florence. He was also known as Cenni di Pepo or Cenni di Pepi. Although heavily influenced by Byzantine models, Cimabue is generally regarded as one of the first great Italian painters to break from the Italo-Byzantine style. While medieval art then was scenes and forms that appeared relatively flat and highly stylized, Cimabue's figures were depicted with more advanced lifelike proportions and shading than other artists of his time. According to Italian painter and historian Giorgio Vasari, Cimabue was the teacher of Giotto, the first great artist of the Italian Proto-Renaissance. However, many scholars today tend to discount Vasari's claim by citing earlier sources that suggest otherwise. Little is known about Cimabue's early life. One source that recounts his career is Vasari's Lives of the Most Excellent Painters, Sculptors, and Architects, but its accuracy is uncertain. He was born in Florence and died in Pisa. Hayden Maginnis speculates that he could have trained in Florence under masters who were culturally connected to Byzantine art. The art historian Pietro Toesca attributed the Crucifixion in the church of San Domenico in Arezzo to Cimabue, dating around 1270, making it the earliest known attributed work that departs from the Byzantine style. Cimabue's Christ is bent, and the clothes have the golden striations that were introduced by Coppo di Marcovaldo. Around 1272, Cimabue is documented as being present in Rome, and a little later he made another Crucifix for the Florentine church of Santa Croce. Now restored, having been damaged by the 1966 Arno River flood, the work was larger and more advanced than the one in Arezzo, with traces of naturalism perhaps inspired by the works of Nicola Pisano. According to Vasari, Cimabue, while travelling from Florence to Vespignano, came upon the 10-year-old Giotto (c. 1277) drawing his sheep with a rough rock upon a smooth stone. He asked if Giotto would like to come and stay with him, which the child accepted with his father's permission. Vasari elaborates that during Giotto's apprenticeship, he allegedly painted a fly on the nose of a portrait Cimabue was working on; the teacher attempted to sweep the fly away several times before he understood his pupil's prank. Many scholars now discount Vasari's claim that he took Giotto as his pupil, citing earlier sources that suggest otherwise. Around 1280, Cimabue painted the Maestà, originally displayed in the church of San Francesco at Pisa, but now at the Louvre. This work established a style that was followed subsequently by numerous artists, including Duccio di Buoninsegna in his Rucellai Madonna (in the past, wrongly attributed to Cimabue) as well as Giotto. Other works from the period, which were said to have heavily influenced Giotto, include a Flagellation (Frick Collection), mosaics for the Baptistery of Florence (now largely restored), the Maestà at the Santa Maria dei Servi in Bologna and the Madonna in the Pinacoteca of Castelfiorentino. A workshop painting, perhaps assignable to a slightly later period, is the Maestà with Saints Francis and Dominic now in the Uffizi. During the pontificate of Pope Nicholas IV, the first Franciscan pope, Cimabue worked in Assisi. At Assisi, in the transept of the Lower Basilica of San Francesco, he created a fresco named Madonna with Child Enthroned, Four Angels and St Francis. The left portion of this fresco is lost, but it may have shown St Anthony of Padua (the authorship of the painting has been recently disputed for technical and stylistic reasons). Cimabue was subsequently commissioned to decorate the apse and the transept of the Upper Basilica of Assisi, in the same period of time that Roman artists were decorating the nave. The cycle he created there comprises scenes from the Gospels, the lives of the Virgin Mary, St Peter and St Paul. The paintings are now in poor condition because of oxidation of the brighter colours that were used by the artist. The Maestà of Santa Trinita, dated to c. 1290–1300, which was originally painted for the church of Santa Trinita in Florence, is now in the Uffizi Gallery. The softer expression of the characters suggests that it was influenced by Giotto, who was by then already active as a painter. Cimabue spent the last period of his life, 1301 to 1302, in Pisa. There, he was commissioned to finish a mosaic of Christ Enthroned, originally begun by Maestro Francesco, in the apse of the city's cathedral. Cimabue was to create the part of the mosaic depicting St John the Evangelist, which remains the sole surviving work documented as being by the artist. Cimabue died around 1302. According to Vasari, quoting a contemporary of Cimabue, "Cimabue of Florence was a painter who lived during the author's own time, a nobler man than anyone knew but he was as a result so haughty and proud that if someone pointed out to him any mistake or defect in his work, or if he had noted any himself... he would immediately destroy the work, no matter how precious it might be." The nickname Cimabue translates as "bull-head" but also possibly as "one who crushes the views of others", from the Italian verb cimare, meaning "to top", "to shear", and "to blunt". The conclusion for the second meaning is drawn from similar commentaries on Dante, who was also known "for being contemptuous of criticism". History has long regarded Cimabue as the last of an era that was overshadowed by the Italian Renaissance. As early as 1543, Vasari wrote of Cimabue, "Cimabue was, in one sense, the principal cause of the renewal of painting," with the qualification that, "Giotto truly eclipsed Cimabue's fame just as a great light eclipses a much smaller one." In Canto XI of his Purgatorio, Dante laments the quick loss of public interest in Cimabue in the face of Giotto's revolution in art: In Purgatorio, although not seen, Cimabue is mentioned by Oderisi, who is also repenting for his pride. Cimabue serves to represent the fleeting nature of fame in contrast with the Enduring God. O vanity of human powers, how briefly lasts the crowning green of glory, unless an age of darkness follows! In painting Cimabue thought he held the field but now it's Giotto has the cry, so that the other's fame is dimmed. On 27 October 2019, The Mocking of Christ, discovered the previous month in northern France in the kitchen of an elderly French woman, sold for €24m (£20m; $26.6m) at auction, setting a new record. The sale price was four times the estimate. Acteon Auction House said the sum, paid by an anonymous buyer from northern France, was a new world record for a medieval painting sold at auction. Media related to Cimabue at Wikimedia Commons	[ { "paragraph_id": 0, "text": "Cimabue (Italian: [tʃimaˈbuːe]), c. 1240 – 1302, was an Italian painter and designer of mosaics from Florence. He was also known as Cenni di Pepo or Cenni di Pepi.", "title": "" }, { "paragraph_id": 1, "text": "Although heavily influenced by Byzantine models, Cimabue is generally regarded as one of the first great Italian painters to break from the Italo-Byzantine style. While medieval art then was scenes and forms that appeared relatively flat and highly stylized, Cimabue's figures were depicted with more advanced lifelike proportions and shading than other artists of his time. According to Italian painter and historian Giorgio Vasari, Cimabue was the teacher of Giotto, the first great artist of the Italian Proto-Renaissance. However, many scholars today tend to discount Vasari's claim by citing earlier sources that suggest otherwise.", "title": "" }, { "paragraph_id": 2, "text": "Little is known about Cimabue's early life. One source that recounts his career is Vasari's Lives of the Most Excellent Painters, Sculptors, and Architects, but its accuracy is uncertain.", "title": "Life" }, { "paragraph_id": 3, "text": "He was born in Florence and died in Pisa. Hayden Maginnis speculates that he could have trained in Florence under masters who were culturally connected to Byzantine art. The art historian Pietro Toesca attributed the Crucifixion in the church of San Domenico in Arezzo to Cimabue, dating around 1270, making it the earliest known attributed work that departs from the Byzantine style. Cimabue's Christ is bent, and the clothes have the golden striations that were introduced by Coppo di Marcovaldo.", "title": "Life" }, { "paragraph_id": 4, "text": "Around 1272, Cimabue is documented as being present in Rome, and a little later he made another Crucifix for the Florentine church of Santa Croce. Now restored, having been damaged by the 1966 Arno River flood, the work was larger and more advanced than the one in Arezzo, with traces of naturalism perhaps inspired by the works of Nicola Pisano.", "title": "Life" }, { "paragraph_id": 5, "text": "According to Vasari, Cimabue, while travelling from Florence to Vespignano, came upon the 10-year-old Giotto (c. 1277) drawing his sheep with a rough rock upon a smooth stone. He asked if Giotto would like to come and stay with him, which the child accepted with his father's permission. Vasari elaborates that during Giotto's apprenticeship, he allegedly painted a fly on the nose of a portrait Cimabue was working on; the teacher attempted to sweep the fly away several times before he understood his pupil's prank. Many scholars now discount Vasari's claim that he took Giotto as his pupil, citing earlier sources that suggest otherwise.", "title": "Life" }, { "paragraph_id": 6, "text": "Around 1280, Cimabue painted the Maestà, originally displayed in the church of San Francesco at Pisa, but now at the Louvre. This work established a style that was followed subsequently by numerous artists, including Duccio di Buoninsegna in his Rucellai Madonna (in the past, wrongly attributed to Cimabue) as well as Giotto. Other works from the period, which were said to have heavily influenced Giotto, include a Flagellation (Frick Collection), mosaics for the Baptistery of Florence (now largely restored), the Maestà at the Santa Maria dei Servi in Bologna and the Madonna in the Pinacoteca of Castelfiorentino. A workshop painting, perhaps assignable to a slightly later period, is the Maestà with Saints Francis and Dominic now in the Uffizi.", "title": "Life" }, { "paragraph_id": 7, "text": "During the pontificate of Pope Nicholas IV, the first Franciscan pope, Cimabue worked in Assisi. At Assisi, in the transept of the Lower Basilica of San Francesco, he created a fresco named Madonna with Child Enthroned, Four Angels and St Francis. The left portion of this fresco is lost, but it may have shown St Anthony of Padua (the authorship of the painting has been recently disputed for technical and stylistic reasons). Cimabue was subsequently commissioned to decorate the apse and the transept of the Upper Basilica of Assisi, in the same period of time that Roman artists were decorating the nave. The cycle he created there comprises scenes from the Gospels, the lives of the Virgin Mary, St Peter and St Paul. The paintings are now in poor condition because of oxidation of the brighter colours that were used by the artist.", "title": "Life" }, { "paragraph_id": 8, "text": "The Maestà of Santa Trinita, dated to c. 1290–1300, which was originally painted for the church of Santa Trinita in Florence, is now in the Uffizi Gallery. The softer expression of the characters suggests that it was influenced by Giotto, who was by then already active as a painter.", "title": "Life" }, { "paragraph_id": 9, "text": "Cimabue spent the last period of his life, 1301 to 1302, in Pisa. There, he was commissioned to finish a mosaic of Christ Enthroned, originally begun by Maestro Francesco, in the apse of the city's cathedral. Cimabue was to create the part of the mosaic depicting St John the Evangelist, which remains the sole surviving work documented as being by the artist. Cimabue died around 1302.", "title": "Life" }, { "paragraph_id": 10, "text": "According to Vasari, quoting a contemporary of Cimabue, \"Cimabue of Florence was a painter who lived during the author's own time, a nobler man than anyone knew but he was as a result so haughty and proud that if someone pointed out to him any mistake or defect in his work, or if he had noted any himself... he would immediately destroy the work, no matter how precious it might be.\"", "title": "Character" }, { "paragraph_id": 11, "text": "The nickname Cimabue translates as \"bull-head\" but also possibly as \"one who crushes the views of others\", from the Italian verb cimare, meaning \"to top\", \"to shear\", and \"to blunt\". The conclusion for the second meaning is drawn from similar commentaries on Dante, who was also known \"for being contemptuous of criticism\".", "title": "Character" }, { "paragraph_id": 12, "text": "History has long regarded Cimabue as the last of an era that was overshadowed by the Italian Renaissance. As early as 1543, Vasari wrote of Cimabue, \"Cimabue was, in one sense, the principal cause of the renewal of painting,\" with the qualification that, \"Giotto truly eclipsed Cimabue's fame just as a great light eclipses a much smaller one.\"", "title": "Legacy" }, { "paragraph_id": 13, "text": "In Canto XI of his Purgatorio, Dante laments the quick loss of public interest in Cimabue in the face of Giotto's revolution in art: In Purgatorio, although not seen, Cimabue is mentioned by Oderisi, who is also repenting for his pride. Cimabue serves to represent the fleeting nature of fame in contrast with the Enduring God.", "title": "In Dante's Divine Comedy" }, { "paragraph_id": 14, "text": "O vanity of human powers, how briefly lasts the crowning green of glory, unless an age of darkness follows! In painting Cimabue thought he held the field but now it's Giotto has the cry, so that the other's fame is dimmed.", "title": "In Dante's Divine Comedy" }, { "paragraph_id": 15, "text": "", "title": "In Dante's Divine Comedy" }, { "paragraph_id": 16, "text": "On 27 October 2019, The Mocking of Christ, discovered the previous month in northern France in the kitchen of an elderly French woman, sold for €24m (£20m; $26.6m) at auction, setting a new record. The sale price was four times the estimate. Acteon Auction House said the sum, paid by an anonymous buyer from northern France, was a new world record for a medieval painting sold at auction.", "title": "Market" }, { "paragraph_id": 17, "text": "Media related to Cimabue at Wikimedia Commons", "title": "External links" } ]	Cimabue, c. 1240 – 1302, was an Italian painter and designer of mosaics from Florence. He was also known as Cenni di Pepo or Cenni di Pepi. Although heavily influenced by Byzantine models, Cimabue is generally regarded as one of the first great Italian painters to break from the Italo-Byzantine style. While medieval art then was scenes and forms that appeared relatively flat and highly stylized, Cimabue's figures were depicted with more advanced lifelike proportions and shading than other artists of his time. According to Italian painter and historian Giorgio Vasari, Cimabue was the teacher of Giotto, the first great artist of the Italian Proto-Renaissance. However, many scholars today tend to discount Vasari's claim by citing earlier sources that suggest otherwise.	2001-11-04T04:56:34Z	2023-12-24T17:14:47Z	[ "Template:Use dmy dates", "Template:IPA-it", "Template:Reflist", "Template:Cite web", "Template:Cite news", "Template:Webarchive", "Template:Short description", "Template:ISBN", "Template:Commons-inline", "Template:Cimabue", "Template:Authority control", "Template:Cite book", "Template:Citation needed", "Template:Convert", "Template:Cite EB1911", "Template:Cite NSRW", "Template:C." ]	https://en.wikipedia.org/wiki/Cimabue
6,997	Corporatocracy	Corporatocracy (/ˌkɔːrpərəˈtɒkrəsi/, from corporate and Greek: -κρατία, romanized: -kratía, lit. 'domination by'; short form corpocracy) is an economic, political and judicial system controlled by business corporations or corporate interests. The concept has been used in explanations of bank bailouts, excessive pay for CEOs, as well as complaints such as the exploitation of national treasuries, people, and natural resources. It has been used by critics of globalization, sometimes in conjunction with criticism of the World Bank or unfair lending practices, as well as criticism of free trade agreements. Corporate rule is also a common theme in dystopian science-fiction media. Historian Howard Zinn argues that during the Gilded Age in the United States, the U.S. government was acting exactly as Karl Marx described capitalist states: "pretending neutrality to maintain order, but serving the interests of the rich". According to economist Joseph Stiglitz, there has been a severe increase in the market power of corporations, largely due to U.S. antitrust laws being weakened by neoliberal reforms, leading to growing income inequality and a generally underperforming economy. He states that to improve the economy, it is necessary to decrease the influence of money on U.S. politics. In his 1956 book The Power Elite, sociologist C. Wright Mills stated that together with the military and political establishment, leaders of the biggest corporations form a "power elite", which is in control of the U.S. Economist Jeffrey Sachs described the United States as a corporatocracy in The Price of Civilization (2011). He suggested that it arose from four trends: weak national parties and strong political representation of individual districts, the large U.S. military establishment after World War II, large corporations using money to finance election campaigns, and globalization tilting the balance of power away from workers. In 2013, economist Edmund Phelps criticized the economic system of the U.S. and other western countries in recent decades as being what he calls "the new corporatism", which he characterizes as a system in which the state is far too involved in the economy and is tasked with "protecting everyone against everyone else", but at the same time, big companies have a great deal of influence on the government, with lobbyists' suggestions being "welcome, especially if they come with bribes". During the Gilded Age in the United States, corruption was rampant, as business leaders spent significant amounts of money ensuring that government did not regulate their activities. Corporations have a significant influence on the regulations and regulators that monitor them. For example, Senator Elizabeth Warren explained in December 2014 how an omnibus spending bill required to fund the government was modified late in the process to weaken banking regulations. The modification made it easier to allow taxpayer-funded bailouts of banking "swaps entities", which the Dodd-Frank banking regulations prohibited. She singled out Citigroup, one of the largest banks, which had a role in modifying the legislation. She also explained how both Wall Street bankers and members of the government that formerly had worked on Wall Street stopped bi-partisan legislation that would have broken up the largest banks. She repeated President Theodore Roosevelt's warnings regarding powerful corporate entities that threatened the "very foundations of Democracy". In a 2015 interview, former President Jimmy Carter stated that the United States is now "an oligarchy with unlimited political bribery" due to the Citizens United v. FEC ruling, which effectively removed limits on donations to political candidates. Wall Street spent a record $2 billion trying to influence the 2016 United States elections. Joel Bakan, a University of British Columbia law professor and the author of the award-winning book The Corporation: The Pathological Pursuit of Profit and Power, writes: The Law forbids any motivation for their actions, whether to assist workers, improve the environment, or help consumers save money. They can do these things with their own money, as private citizens. As corporate officials, however, stewards of other people’s money, they have no legal authority to pursue such goals as ends in themselves – only as means to serve the corporations own interests, which generally means to maximise the wealth of its shareholders. Corporate social responsibility is thus illegal – at least when its genuine. With regard to income inequality, the 2014 income analysis of the University of California, Berkeley economist Emmanuel Saez confirms that relative growth of income and wealth is not occurring among small and mid-sized entrepreneurs and business owners (who generally populate the lower half of top one per-centers in income), but instead only among the top .1 percent of the income distribution, who earn $2,000,000 or more every year. Corporate power can also increase income inequality. Nobel Prize winner of economics Joseph Stiglitz wrote in May 2011: "Much of today’s inequality is due to manipulation of the financial system, enabled by changes in the rules that have been bought and paid for by the financial industry itself—one of its best investments ever. The government lent money to financial institutions at close to zero percent interest and provided generous bailouts on favorable terms when all else failed. Regulators turned a blind eye to a lack of transparency and to conflicts of interest." Stiglitz explained that the top 1% got nearly "one-quarter" of the income and own approximately 40% of the wealth. Measured relative to GDP, total compensation and its component wages and salaries have been declining since 1970. This indicates a shift in income from labor (persons who derive income from hourly wages and salaries) to capital (persons who derive income via ownership of businesses, land, and assets). Larry Summers estimated in 2007 that the lower 80% of families were receiving $664 billion less income than they would be with a 1979 income distribution, or approximately $7,000 per family. Not receiving this income may have led many families to increase their debt burden, a significant factor in the 2007–2009 subprime mortgage crisis, as highly leveraged homeowners suffered a much larger reduction in their net worth during the crisis. Further, since lower income families tend to spend relatively more of their income than higher income families, shifting more of the income to wealthier families may slow economic growth. Some large U.S. corporations have used a strategy called tax inversion to change their headquarters to a non-U.S. country to reduce their tax liability. About 46 companies have reincorporated in low-tax countries since 1982, including 15 since 2012. Six more also planned to do so in 2015. One indication of increasing corporate power was the removal of restrictions on their ability to buy back stock, contributing to increased income inequality. Writing in the Harvard Business Review in September 2014, William Lazonick blamed record corporate stock buybacks for reduced investment in the economy and a corresponding impact on prosperity and income inequality. Between 2003 and 2012, the 449 companies in the S&P 500 used 54% of their earnings ($2.4 trillion) to buy back their own stock. An additional 37% was paid to stockholders as dividends. Together, these were 91% of profits. This left little for investment in productive capabilities or higher income for employees, shifting more income to capital rather than labor. He blamed executive compensation arrangements, which are heavily based on stock options, stock awards, and bonuses, for meeting earnings per share (EPS) targets. EPS increases as the number of outstanding shares decreases. Legal restrictions on buybacks were greatly eased in the early 1980s. He advocates changing these incentives to limit buybacks. In the 12 months to March 31, 2014, S&P 500 companies increased their stock buyback payouts by 29% year on year, to $534.9 billion. U.S. companies are projected to increase buybacks to $701 billion in 2015, according to Goldman Sachs, an 18% increase over 2014. For scale, annual non-residential fixed investment (a proxy for business investment and a major GDP component) was estimated to be about $2.1 trillion for 2014. Brid Brennan of the Transnational Institute explained how the concentration of corporations increases their influence over government: "It's not just their size, their enormous wealth and assets that make the TNCs [transnational corporations] dangerous to democracy. It's also their concentration, their capacity to influence, and often infiltrate, governments and their ability to act as a genuine international social class in order to defend their commercial interests against the common good. It is such decision-making power as well as the power to impose deregulation over the past 30 years, resulting in changes to national constitutions, and to national and international legislation which has created the environment for corporate crime and impunity." Brennan concludes that this concentration in power leads to again more concentration of income and wealth. An example of such industry concentration is in banking. The top 5 U.S. banks had approximately 30% of the U.S. banking assets in 1998; this rose to 45% by 2008 and to 48% by 2010, before falling to 47% in 2011. The Economist also explained how an increasingly profitable corporate financial and banking sector caused Gini coefficients to rise in the U.S. since 1980: "Financial services' share of GDP in America, doubled to 8% between 1980 and 2000; over the same period their profits rose from about 10% to 35% of total corporate profits, before collapsing in 2007–09. Bankers are being paid more, too. In America the compensation of workers in financial services was similar to average compensation until 1980. Now it is twice that average." Several scholars have linked mass incarceration of the poor in the United States with the rise of neoliberalism. Sociologist Loïc Wacquant and Marxist economic geographer David Harvey have argued that the criminalization of poverty and mass incarceration is a neoliberal policy for dealing with social instability among economically marginalized populations. According to Wacquant, this situation follows the implementation of other neoliberal policies, which have allowed for the retrenchment of the social welfare state and the rise of punitive workfare, whilst increasing gentrification of urban areas, privatization of public functions, the shrinking of collective protections for the working class via economic deregulation and the rise of underpaid, precarious wage labor. By contrast, it is extremely lenient in dealing with those in the upper echelons of society, in particular when it comes to economic crimes of the upper class and corporations such as fraud, embezzlement, insider trading, credit and insurance fraud, money laundering and violation of commerce and labor codes. According to Wacquant, neoliberalism does not shrink government, but instead sets up a "centaur state" with little governmental oversight for those at the top and strict control of those at the bottom. In his 2014 book, Mark Blyth claims that austerity not only fails to stimulate growth, but effectively passes that debt down to the working classes. As such, many academics such as Andrew Gamble view Austerity in Britain less as an economic necessity, and more as a tool of statecraft, driven by ideology and not economic requirements. A study published in The BMJ in November 2017 found the Conservative government austerity programme had been linked to approximately 120,000 deaths since 2010; however, this was disputed, for example on the grounds that it was an observational study which did not show cause and effect. More studies claim adverse effects of austerity on population health, which include an increase in the mortality rate among pensioners which has been linked to unprecedented reductions in income support, an increase in suicides and the prescription of antidepressants for patients with mental health issues, and an increase in violence, self-harm, and suicide in prisons. Clara E. Mattei, assistant professor of economics at the New School for Social Research, posits that austerity is less of a means to "fix the economy" and is more of an ideological weapon of class oppression wielded by economic and political elites in order to suppress revolts and unrest by the working class public and close off any alternatives to the capitalist system. She traces the origins of modern austerity to post-World War I Britain and Italy, when it served as a "powerful counteroffensive" to rising working class agitation and anti-capitalist sentiment. In this, she quotes British economist G. D. H. Cole writing on the British response to the economic downturn of 1921: "The big working-class offensive had been successfully stalled off; and British capitalism, though threatened with economic adversity, felt itself once more safely in the saddle and well able to cope, both industrially and politically, with any attempt that might still be made from the labour side to unseat it."	[ { "paragraph_id": 0, "text": "Corporatocracy (/ˌkɔːrpərəˈtɒkrəsi/, from corporate and Greek: -κρατία, romanized: -kratía, lit. 'domination by'; short form corpocracy) is an economic, political and judicial system controlled by business corporations or corporate interests.", "title": "" }, { "paragraph_id": 1, "text": "The concept has been used in explanations of bank bailouts, excessive pay for CEOs, as well as complaints such as the exploitation of national treasuries, people, and natural resources. It has been used by critics of globalization, sometimes in conjunction with criticism of the World Bank or unfair lending practices, as well as criticism of free trade agreements. Corporate rule is also a common theme in dystopian science-fiction media.", "title": "" }, { "paragraph_id": 2, "text": "Historian Howard Zinn argues that during the Gilded Age in the United States, the U.S. government was acting exactly as Karl Marx described capitalist states: \"pretending neutrality to maintain order, but serving the interests of the rich\".", "title": "Use of \"corporatocracy\" and similar ideas" }, { "paragraph_id": 3, "text": "According to economist Joseph Stiglitz, there has been a severe increase in the market power of corporations, largely due to U.S. antitrust laws being weakened by neoliberal reforms, leading to growing income inequality and a generally underperforming economy. He states that to improve the economy, it is necessary to decrease the influence of money on U.S. politics.", "title": "Use of \"corporatocracy\" and similar ideas" }, { "paragraph_id": 4, "text": "In his 1956 book The Power Elite, sociologist C. Wright Mills stated that together with the military and political establishment, leaders of the biggest corporations form a \"power elite\", which is in control of the U.S.", "title": "Use of \"corporatocracy\" and similar ideas" }, { "paragraph_id": 5, "text": "Economist Jeffrey Sachs described the United States as a corporatocracy in The Price of Civilization (2011). He suggested that it arose from four trends: weak national parties and strong political representation of individual districts, the large U.S. military establishment after World War II, large corporations using money to finance election campaigns, and globalization tilting the balance of power away from workers.", "title": "Use of \"corporatocracy\" and similar ideas" }, { "paragraph_id": 6, "text": "In 2013, economist Edmund Phelps criticized the economic system of the U.S. and other western countries in recent decades as being what he calls \"the new corporatism\", which he characterizes as a system in which the state is far too involved in the economy and is tasked with \"protecting everyone against everyone else\", but at the same time, big companies have a great deal of influence on the government, with lobbyists' suggestions being \"welcome, especially if they come with bribes\".", "title": "Use of \"corporatocracy\" and similar ideas" }, { "paragraph_id": 7, "text": "During the Gilded Age in the United States, corruption was rampant, as business leaders spent significant amounts of money ensuring that government did not regulate their activities.", "title": "Corporate influence on politics in the United States" }, { "paragraph_id": 8, "text": "Corporations have a significant influence on the regulations and regulators that monitor them. For example, Senator Elizabeth Warren explained in December 2014 how an omnibus spending bill required to fund the government was modified late in the process to weaken banking regulations. The modification made it easier to allow taxpayer-funded bailouts of banking \"swaps entities\", which the Dodd-Frank banking regulations prohibited. She singled out Citigroup, one of the largest banks, which had a role in modifying the legislation. She also explained how both Wall Street bankers and members of the government that formerly had worked on Wall Street stopped bi-partisan legislation that would have broken up the largest banks. She repeated President Theodore Roosevelt's warnings regarding powerful corporate entities that threatened the \"very foundations of Democracy\".", "title": "Corporate influence on politics in the United States" }, { "paragraph_id": 9, "text": "In a 2015 interview, former President Jimmy Carter stated that the United States is now \"an oligarchy with unlimited political bribery\" due to the Citizens United v. FEC ruling, which effectively removed limits on donations to political candidates. Wall Street spent a record $2 billion trying to influence the 2016 United States elections.", "title": "Corporate influence on politics in the United States" }, { "paragraph_id": 10, "text": "Joel Bakan, a University of British Columbia law professor and the author of the award-winning book The Corporation: The Pathological Pursuit of Profit and Power, writes:", "title": "Corporate influence on politics in the United States" }, { "paragraph_id": 11, "text": "The Law forbids any motivation for their actions, whether to assist workers, improve the environment, or help consumers save money. They can do these things with their own money, as private citizens. As corporate officials, however, stewards of other people’s money, they have no legal authority to pursue such goals as ends in themselves – only as means to serve the corporations own interests, which generally means to maximise the wealth of its shareholders. Corporate social responsibility is thus illegal – at least when its genuine.", "title": "Corporate influence on politics in the United States" }, { "paragraph_id": 12, "text": "With regard to income inequality, the 2014 income analysis of the University of California, Berkeley economist Emmanuel Saez confirms that relative growth of income and wealth is not occurring among small and mid-sized entrepreneurs and business owners (who generally populate the lower half of top one per-centers in income), but instead only among the top .1 percent of the income distribution, who earn $2,000,000 or more every year.", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 13, "text": "Corporate power can also increase income inequality. Nobel Prize winner of economics Joseph Stiglitz wrote in May 2011: \"Much of today’s inequality is due to manipulation of the financial system, enabled by changes in the rules that have been bought and paid for by the financial industry itself—one of its best investments ever. The government lent money to financial institutions at close to zero percent interest and provided generous bailouts on favorable terms when all else failed. Regulators turned a blind eye to a lack of transparency and to conflicts of interest.\" Stiglitz explained that the top 1% got nearly \"one-quarter\" of the income and own approximately 40% of the wealth.", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 14, "text": "Measured relative to GDP, total compensation and its component wages and salaries have been declining since 1970. This indicates a shift in income from labor (persons who derive income from hourly wages and salaries) to capital (persons who derive income via ownership of businesses, land, and assets).", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 15, "text": "Larry Summers estimated in 2007 that the lower 80% of families were receiving $664 billion less income than they would be with a 1979 income distribution, or approximately $7,000 per family. Not receiving this income may have led many families to increase their debt burden, a significant factor in the 2007–2009 subprime mortgage crisis, as highly leveraged homeowners suffered a much larger reduction in their net worth during the crisis. Further, since lower income families tend to spend relatively more of their income than higher income families, shifting more of the income to wealthier families may slow economic growth.", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 16, "text": "Some large U.S. corporations have used a strategy called tax inversion to change their headquarters to a non-U.S. country to reduce their tax liability. About 46 companies have reincorporated in low-tax countries since 1982, including 15 since 2012. Six more also planned to do so in 2015.", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 17, "text": "One indication of increasing corporate power was the removal of restrictions on their ability to buy back stock, contributing to increased income inequality. Writing in the Harvard Business Review in September 2014, William Lazonick blamed record corporate stock buybacks for reduced investment in the economy and a corresponding impact on prosperity and income inequality. Between 2003 and 2012, the 449 companies in the S&P 500 used 54% of their earnings ($2.4 trillion) to buy back their own stock. An additional 37% was paid to stockholders as dividends. Together, these were 91% of profits. This left little for investment in productive capabilities or higher income for employees, shifting more income to capital rather than labor. He blamed executive compensation arrangements, which are heavily based on stock options, stock awards, and bonuses, for meeting earnings per share (EPS) targets. EPS increases as the number of outstanding shares decreases. Legal restrictions on buybacks were greatly eased in the early 1980s. He advocates changing these incentives to limit buybacks.", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 18, "text": "In the 12 months to March 31, 2014, S&P 500 companies increased their stock buyback payouts by 29% year on year, to $534.9 billion. U.S. companies are projected to increase buybacks to $701 billion in 2015, according to Goldman Sachs, an 18% increase over 2014. For scale, annual non-residential fixed investment (a proxy for business investment and a major GDP component) was estimated to be about $2.1 trillion for 2014.", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 19, "text": "Brid Brennan of the Transnational Institute explained how the concentration of corporations increases their influence over government: \"It's not just their size, their enormous wealth and assets that make the TNCs [transnational corporations] dangerous to democracy. It's also their concentration, their capacity to influence, and often infiltrate, governments and their ability to act as a genuine international social class in order to defend their commercial interests against the common good. It is such decision-making power as well as the power to impose deregulation over the past 30 years, resulting in changes to national constitutions, and to national and international legislation which has created the environment for corporate crime and impunity.\" Brennan concludes that this concentration in power leads to again more concentration of income and wealth.", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 20, "text": "An example of such industry concentration is in banking. The top 5 U.S. banks had approximately 30% of the U.S. banking assets in 1998; this rose to 45% by 2008 and to 48% by 2010, before falling to 47% in 2011.", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 21, "text": "The Economist also explained how an increasingly profitable corporate financial and banking sector caused Gini coefficients to rise in the U.S. since 1980: \"Financial services' share of GDP in America, doubled to 8% between 1980 and 2000; over the same period their profits rose from about 10% to 35% of total corporate profits, before collapsing in 2007–09. Bankers are being paid more, too. In America the compensation of workers in financial services was similar to average compensation until 1980. Now it is twice that average.\"", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 22, "text": "Several scholars have linked mass incarceration of the poor in the United States with the rise of neoliberalism. Sociologist Loïc Wacquant and Marxist economic geographer David Harvey have argued that the criminalization of poverty and mass incarceration is a neoliberal policy for dealing with social instability among economically marginalized populations. According to Wacquant, this situation follows the implementation of other neoliberal policies, which have allowed for the retrenchment of the social welfare state and the rise of punitive workfare, whilst increasing gentrification of urban areas, privatization of public functions, the shrinking of collective protections for the working class via economic deregulation and the rise of underpaid, precarious wage labor. By contrast, it is extremely lenient in dealing with those in the upper echelons of society, in particular when it comes to economic crimes of the upper class and corporations such as fraud, embezzlement, insider trading, credit and insurance fraud, money laundering and violation of commerce and labor codes. According to Wacquant, neoliberalism does not shrink government, but instead sets up a \"centaur state\" with little governmental oversight for those at the top and strict control of those at the bottom.", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 23, "text": "In his 2014 book, Mark Blyth claims that austerity not only fails to stimulate growth, but effectively passes that debt down to the working classes. As such, many academics such as Andrew Gamble view Austerity in Britain less as an economic necessity, and more as a tool of statecraft, driven by ideology and not economic requirements. A study published in The BMJ in November 2017 found the Conservative government austerity programme had been linked to approximately 120,000 deaths since 2010; however, this was disputed, for example on the grounds that it was an observational study which did not show cause and effect. More studies claim adverse effects of austerity on population health, which include an increase in the mortality rate among pensioners which has been linked to unprecedented reductions in income support, an increase in suicides and the prescription of antidepressants for patients with mental health issues, and an increase in violence, self-harm, and suicide in prisons.", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 24, "text": "Clara E. Mattei, assistant professor of economics at the New School for Social Research, posits that austerity is less of a means to \"fix the economy\" and is more of an ideological weapon of class oppression wielded by economic and political elites in order to suppress revolts and unrest by the working class public and close off any alternatives to the capitalist system. She traces the origins of modern austerity to post-World War I Britain and Italy, when it served as a \"powerful counteroffensive\" to rising working class agitation and anti-capitalist sentiment. In this, she quotes British economist G. D. H. Cole writing on the British response to the economic downturn of 1921:", "title": "Perceived symptoms of corporatocracy in the United States" }, { "paragraph_id": 25, "text": "\"The big working-class offensive had been successfully stalled off; and British capitalism, though threatened with economic adversity, felt itself once more safely in the saddle and well able to cope, both industrially and politically, with any attempt that might still be made from the labour side to unseat it.\"", "title": "Perceived symptoms of corporatocracy in the United States" } ]	Corporatocracy is an economic, political and judicial system controlled by business corporations or corporate interests. The concept has been used in explanations of bank bailouts, excessive pay for CEOs, as well as complaints such as the exploitation of national treasuries, people, and natural resources. It has been used by critics of globalization, sometimes in conjunction with criticism of the World Bank or unfair lending practices, as well as criticism of free trade agreements. Corporate rule is also a common theme in dystopian science-fiction media.	2001-11-04T14:18:16Z	2023-12-24T08:44:43Z	[ "Template:Blockquote", "Template:Sfnp", "Template:Cite web", "Template:About", "Template:Multiple issues", "Template:Cite news", "Template:Cite magazine", "Template:IPAc-en", "Template:Main", "Template:Lang-el", "Template:Columns-list", "Template:Cite book", "Template:Refbegin", "Template:Short description", "Template:Distinguish", "Template:Sfn", "Template:Reflist", "Template:Cite AV media", "Template:Cbignore", "Template:Cite journal", "Template:Refend", "Template:Specify", "Template:See also", "Template:Wikiquote" ]	https://en.wikipedia.org/wiki/Corporatocracy
6,999	Culture of Canada	The culture of Canada embodies the artistic, culinary, literary, humour, musical, political and social elements that are representative of Canadians. Throughout Canada's history, its culture has been influenced firstly by its indigenous cultures, and later by European culture and traditions, mostly by the British and French. Over time, elements of the cultures of Canada's immigrant populations have become incorporated to form a Canadian cultural mosaic. Certain segments of Canada's population have, to varying extents, also been influenced by American culture due to shared language (in English-speaking Canada), significant media penetration and geographic proximity. Canada is often characterized as being "very progressive, diverse, and multicultural". Canada's federal government has often been described as the instigator of multicultural ideology because of its public emphasis on the social importance of immigration. Canada's culture draws from its broad range of constituent nationalities, and policies that promote a just society are constitutionally protected. Canadian policies—such as abortion, euthanasia, same-sex marriage, and cannabis; an emphasis on cultural diversity; large-scale immigration; outlawing capital punishment; publicly funded health care; higher and more progressive taxation; efforts to eliminate poverty; and strict gun control are social indicators of the country's political and cultural values. Canadians identify with the country's institutions of health care, military peacekeeping, the national park system, and the Canadian Charter of Rights and Freedoms. In 2015, Prime Minister Justin Trudeau defined the country as the world's first postnational state: "There is no core identity, no mainstream in Canada". The Canadian government has influenced culture with programs, laws and institutions. It has created crown corporations to promote Canadian culture through media, such as the Canadian Broadcasting Corporation (CBC) and the National Film Board of Canada (NFB), and promotes many events which it considers to promote Canadian traditions. It has also tried to protect Canadian culture by setting legal minimums on Canadian content in many media using bodies like the Canadian Radio-television and Telecommunications Commission (CRTC). For thousands of years, Canada has been inhabited by indigenous peoples from a variety of different cultures and of several major linguistic groupings. Although not without conflict and bloodshed, early European interactions with First Nations and Inuit populations in what is now Canada were arguably peaceful. First Nations and Métis peoples played a critical part in the development of European colonies in Canada, particularly for their role in assisting European coureur des bois and voyageurs in the exploration of the continent during the North American fur trade. Over the course of three centuries, countless North American Indigenous words, inventions, concepts, and games have become an everyday part of Canadian language and use. Many places in Canada, both natural features and human habitations, use indigenous names. The name "Canada" itself derives from the St. Lawrence Huron-Iroquoian word "Kanata" meaning "village" or "settlement". The name of Canada's capital city Ottawa comes from the Algonquin language term "adawe" meaning "to trade". In the 17th-century, French colonials settled New France in Acadia, in the present-day Maritimes, and in Canada, along the Saint Lawrence River in present-day Quebec and Ontario. These regions were under French control from 1534 to 1763. However, the British conquered Acadia in 1710 and conquered Canada in 1760. The British were able to deport most of the Acadians, but they were unable to deport the Canadiens of Canada because they severely outnumbered the British forces. The British therefore had to make deals with Canadiens and hope they would one day become assimilated. The American Revolution, from 1775 to 1783, provoked the migration of 40,000 to 50,000 United Empire Loyalists from the Thirteen Colonies to the newly conquered British lands, which brought American influences to Canada for the first time. Following the War of 1812, many Scottish and English people settled in Upper Canada and Lower Canada. Many Irish people fleeing the Great Famine also arrived between 1845 and 1852. The Canadian Forces and overall civilian participation in the First World War and Second World War helped to foster Canadian nationalism; however, in 1917 and 1944, conscription crises highlighted the considerable rift along ethnic lines between Anglophones and Francophones. As a result of the First and Second World Wars, the Government of Canada became more assertive and less deferential to British authority. Canada, until the 1940s, was often described as "binational", with the 2 components being the cultural, linguistic and political identities of English Canadians and of French Canadians. Legislative restrictions on immigration (such as the Continuous journey regulation and Chinese Immigration Act) that had favoured British, American and other European immigrants (such as Dutch, German, Italian, Polish, Swedish and Ukrainian) were amended during the 1960s, resulting in an influx of people of many different ethnicities. By the end of the 20th century, immigrants were increasingly Chinese, Indian, Vietnamese, Jamaican, Filipino, Lebanese, Pakistani and Haitian. By the 21st century Canada had thirty four ethnic groups with at least one hundred thousand members each, of which eleven have over 1,000,000 people and numerous others are represented in smaller numbers. As of 2006, 16.2% of the population self-identify as a visible minority. Themes and symbols of pioneers, trappers, and traders played an important part in the early development of Canadian culture. Modern Canadian culture as it is understood today can be traced to its time period of westward expansion and nation building. Contributing factors include Canada's unique geography, climate, and cultural makeup. Being a cold country with long winter nights for most of the year, certain unique leisure activities developed in Canada during this period including ice hockey and embracement of the summer indigenous game of lacrosse. By the 19th century, Canadians came to believe themselves possessed of a unique "northern character," due to the long, harsh winters that only those of hardy body and mind could survive. This hardiness was claimed as a Canadian trait, and sports that reflected this, such as snowshoeing and cross-country skiing, were asserted as characteristically Canadian. During this period, the churches tried to influence leisure activities by preaching against drinking, and scheduling annual revivals and weekly club activities. In a society in which most middle-class families now owned a harmonium or piano, and standard education included at least the rudiments of music, the result was often an original song. Such stirrings frequently occurred in response to noteworthy events, and few local or national excitements were allowed to pass without some musical comment. By the 1930s, radio played a major role in uniting Canadians behind their local or regional teams. Rural areas were especially influenced by sports coverage and the propagation of national myths. Outside the sports and music arena, Canadians expressed a national character of being hard working, peaceful, orderly and polite. French Canada's early development was relatively cohesive during the 17th and 18th centuries, and this was preserved by the Quebec Act of 1774, which allowed Roman Catholics to hold offices and practice their faith. In 1867, the Constitution Act was thought to meet the growing calls for Canadian autonomy while avoiding the overly strong decentralization that contributed to the Civil War in the United States. The compromises reached during this time between the English- and French-speaking Fathers of Confederation set Canada on a path to bilingualism which in turn contributed to an acceptance of diversity. The English and French languages have had limited constitutional protection since 1867 and full official status since 1969. Section 133 of the Constitution Act of 1867 (BNA Act) guarantees that both languages may be used in the Parliament of Canada. Canada adopted its first Official Languages Act in 1969, giving English and French equal status in the government of Canada. Doing so makes them "official" languages, having preferred status in law over all other languages used in Canada. Prior to the advent of the Canadian Bill of Rights in 1960 and its successor the Canadian Charter of Rights and Freedoms in 1982, the laws of Canada did not provide much in the way of civil rights and this issue was typically of limited concern to the courts. Canada since the 1960s has placed emphasis on equality and inclusiveness for all people. Multiculturalism in Canada was adopted as the official policy of the Canadian government and is enshrined in Section 27 of the Canadian Charter of Rights and Freedoms. In 1995, the Supreme Court of Canada ruled in Egan v. Canada that sexual orientation should be "read in" to Section Fifteen of the Canadian Charter of Rights and Freedoms, a part of the Constitution of Canada guaranteeing equal rights to all Canadians. Following a series of decisions by provincial courts and the Supreme Court of Canada, on July 20, 2005, the Civil Marriage Act (Bill C-38) became law, legalizing same-sex marriage in Canada. Furthermore, sexual orientation was included as a protected status in the human-rights laws of the federal government and of all provinces and territories. Canadian governments at the federal level have a tradition of liberalism, and govern with a moderate, centrist political ideology. Canada's egalitarian approach to governance emphasizing social justice and multiculturalism, is based on selective immigration, social integration, and suppression of far-right politics that has wide public and political support. Peace, order, and good government are constitutional goals of the Canadian government. Canada has a multi-party system in which many of its legislative customs derive from the unwritten conventions of and precedents set by the Westminster parliament of the United Kingdom. The country has been dominated by two parties, the centre-left Liberal Party of Canada and the centre-right Conservative Party of Canada. The historically predominant Liberals position themselves at the centre of the political scale, with the Conservatives sitting on the right and the New Democratic Party occupying the left. Smaller parties like the Quebec nationalist Bloc Québécois and the Green Party of Canada have also been able to exert their influence over the political process by representation at the federal level. In general, Canadian nationalists are concerned about the protection of Canadian sovereignty and loyalty to the Canadian State, placing them in the civic nationalist category. It has likewise often been suggested that anti-Americanism plays a prominent role in Canadian nationalist ideologies. A unified, bi-cultural, tolerant and sovereign Canada remains an ideological inspiration to many Canadian nationalists. Alternatively Quebecois nationalism and support for maintaining French Canadian culture many of whom were supporters of the Quebec sovereignty movement during the late-20th century. Cultural protectionism in Canada has, since the mid-20th century, taken the form of conscious, interventionist attempts on the part of various Canadian governments to promote Canadian cultural production. Sharing a large border, a common language (for the majority), and being exposed to massive diffusions of American media makes it difficult for Canada to preserve its own culture versus being assimilated to American culture. While Canada tries to maintain its cultural differences, it also must balance this with responsibility in trade arrangements such as the General Agreement on Tariffs and Trade (GATT) and the United States–Mexico–Canada Agreement (USMCA). Canadian values are the perceived commonly shared ethical and human values of Canadians. The major political parties have claimed explicitly that they uphold Canadian values, but use generalities to specify them. Historian Ian MacKay argues that, thanks to the long-term political impact of "Rebels, Reds, and Radicals", and allied leftist political elements, "egalitarianism, social equality, and peace... are now often simply referred to...as 'Canadian values.'" Canada ranks among the highest in international measurements of government transparency, civil liberties, quality of life, economic freedom, education, and gender equality. A 2013 Statistics Canada survey found that an "overwhelming majority" of Canadians shared the values of human rights (with 92% of respondents agreeing that they are a shared Canadian value), respect for the law (92%) and gender equality (91%). Universal access to publicly funded health services "is often considered by Canadians as a fundamental value that ensures national health care insurance for everyone wherever they live in the country." The Canadian Charter of Rights and Freedoms, was intended to be a source for Canadian values and national unity. The 15th Prime Minister Pierre Trudeau wrote in his Memoirs that: Canada itself could now be defined as a "society where all people are equal and where they share some fundamental values based upon freedom", and that all Canadians could identify with the values of liberty and equality. Numerous scholars, beginning in the 1940s with American sociologist Seymour Martin Lipset; have tried to identify, measure and compare them with other countries, especially the United States. However, there are critics who say that such a task is practically impossible. Denis Stairs a professor of political Science at Dalhousie University; links the concept of Canadian values with nationalism. [Canadians typically]...believe, in particular, that they subscribe to a distinctive set of values - Canadian values - and that those values are special in the sense of being unusually virtuous. Canada's large geographic size, the presence of a significant number of indigenous peoples, the conquest of one European linguistic population by another and relatively open immigration policy have led to an extremely diverse society. As a result, the issue of Canadian identity remains under scrutiny. Canada has constitutional protection for policies that promote multiculturalism rather than cultural assimilation or a single national myth. In Quebec, cultural identity is strong, and many commentators speak of a French Canadian culture as distinguished from English Canadian culture. However, as a whole, Canada is in theory, a cultural mosaic—a collection of several regional, and ethnic subcultures. As Professor Alan Cairns noted about the Canadian Charter of Rights and Freedoms , "the initial federal government premise was on developing a pan-Canadian identity"'. Pierre Trudeau himself later wrote in his Memoirs (1993) that "Canada itself" could now be defined as a "society where all people are equal and where they share some fundamental values based upon freedom", and that all Canadians could identify with the values of liberty and equality. Political philosopher Charles Blattberg suggests that Canada is a "multinational country"; as all Canadians are members of Canada as a civic or political community, a community of citizens, and this is a community that contains many other kinds within it. These include not only communities of ethnic, regional, religious, and civic (the provincial and municipal governments) sorts, but also national communities, which often include or overlap with many of the other kinds. Journalist and author Richard Gwyn has suggested that "tolerance" has replaced "loyalty" as the touchstone of Canadian identity. Journalist and professor Andrew Cohen wrote in 2007: The Canadian Identity, as it has come to be known, is as elusive as the Sasquatch and Ogopogo. It has animated—and frustrated—generations of statesmen, historians, writers, artists, philosophers, and the National Film Board ... Canada resists easy definition. Canada's 15th prime minister Pierre Trudeau in regards to uniformity stated: Uniformity is neither desirable nor possible in a country the size of Canada. We should not even be able to agree upon the kind of Canadian to choose as a model, let alone persuade most people to emulate it. There are few policies potentially more disastrous for Canada than to tell all Canadians that they must be alike. There is no such thing as a model or ideal Canadian. What could be more absurd than the concept of an "all-Canadian" boy or girl? A society which emphasizes uniformity is one which creates intolerance and hate. The question of Canadian identity was traditionally dominated by three fundamental themes: first, the often conflicted relations between English Canadians and French Canadians stemming from the French Canadian imperative for cultural and linguistic survival; secondly, the generally close ties between English Canadians and the British Empire, resulting in a gradual political process towards complete independence from the imperial power; and finally, the close proximity of English-speaking Canadians to the United States. Much of the debate over contemporary Canadian identity is argued in political terms, and defines Canada as a country defined by its government policies, which are thought to reflect deeper cultural values. In 2013, more than 90% of Canadians believed that the Canadian Charter of Rights and Freedoms and the national flag were the top symbols of Canadian identity. Next highest were the national anthem, the Royal Canadian Mounted Police and hockey. Western alienation is the notion that the western provinces have historically been alienated, and in extreme cases excluded, from mainstream Canadian political affairs in favour of Eastern Canada or more specifically the central provinces. Western alienation claims that these latter two are politically represented, and economically favoured, more significantly than the former, which has given rise to the sentiment of alienation among many western Canadians. Likewise; the Quebec sovereignty movement that lead to the Québécois nation and the province of Quebec being recognized as a "distinct society" within Canada, highlights the sharp divisions between the Anglo and Francophone population. Though more than half of Canadians live in just two provinces (Ontario and Quebec), each province is largely self-contained due to provincial economic self-sufficiency. Only 15 percent of Canadians live in a different province from where they were born, and only 10 percent go to another province for university. Canada has always been like this, and stands in sharp contrast to the United States' internal mobility which is much higher. For example 30 percent live in a different state from where they were born, and 30 percent go away for university. Scott Gilmore in Maclean's argues that "Canada is a nation of strangers", in the sense that for most individuals, the rest of Canada outside their province is little-known. Another factor is the cost of internal travel. Intra-Canadian airfares are high—it is cheaper and more common to visit the United States than to visit another province. Gilmore argues that the mutual isolation makes it difficult to muster national responses to major national issues. Canadian humour is an integral part of the Canadian Identity. There are several traditions in Canadian humour in both English and French. While these traditions are distinct and at times very different, there are common themes that relate to Canadians' shared history and geopolitical situation in the Western Hemisphere and the world. Various trends can be noted in Canadian comedy. One trend is the portrayal of a "typical" Canadian family in an ongoing radio or television series. Other trends include outright absurdity, and political and cultural satire. Irony, parody, satire, and self-deprecation are arguably the primary characteristics of Canadian humour. The beginnings of Canadian national radio comedy date to the late 1930s with the debut of The Happy Gang, a long-running weekly variety show that was regularly sprinkled with corny jokes in between tunes. Canadian television comedy begins with Wayne and Shuster, a sketch comedy duo who performed as a comedy team during the Second World War, and moved their act to radio in 1946 before moving on to television. Second City Television, otherwise known as SCTV, Royal Canadian Air Farce, This Hour Has 22 Minutes, The Kids in the Hall, Trailer Park Boys, Corner gas and more recently Schitt's Creek are regarded as television shows which were very influential on the development of Canadian humour. Canadian comedians have had great success in the film industry and are amongst the most recognized in the world. Humber College in Toronto and the École nationale de l'humour in Montreal offer post-secondary programmes in comedy writing and performance. Montreal is also home to the bilingual (English and French) Just for Laughs festival and to the Just for Laughs Museum, a bilingual, international museum of comedy. Canada has a national television channel, The Comedy Network, devoted to comedy. Many Canadian cities feature comedy clubs and showcases, most notable, The Second City branch in Toronto (originally housed at The Old Fire Hall) and the Yuk Yuk's national chain. The Canadian Comedy Awards were founded in 1999 by the Canadian Comedy Foundation for Excellence, a not-for-profit organization. Predominant symbols of Canada include the maple leaf, beaver, and the Canadian horse. Many official symbols of the country such as the Flag of Canada have been changed or modified over the past few decades to Canadianize them and de-emphasise or remove references to the United Kingdom. Other prominent symbols include the sports of hockey and lacrosse, the Canada goose, the Royal Canadian Mounted Police, the Canadian Rockies, and more recently the totem pole and Inuksuk; material items such as Canadian beer, maple syrup, tuques, canoes, nanaimo bars, butter tarts and the Quebec dish of poutine have also been defined as uniquely Canadian. Symbols of the Canadian monarchy continue to be featured in, for example, the Arms of Canada, the armed forces, and the prefix His Majesty's Canadian Ship. The designation Royal remains for institutions as varied as the Royal Canadian Armed Forces, Royal Canadian Mounted Police and the Royal Winnipeg Ballet. Indigenous artists were producing art in the territory that is now called Canada for thousands of years prior to the arrival of European settler colonists and the eventual establishment of Canada as a nation state. Like the peoples that produced them, indigenous art traditions spanned territories that extended across the current national boundaries between Canada and the United States. The majority of indigenous artworks preserved in museum collections date from the period after European contact and show evidence of the creative adoption and adaptation of European trade goods such as metal and glass beads. Canadian sculpture has been enriched by the walrus ivory, muskox horn and caribou antler and soapstone carvings by the Inuit artists. These carvings show objects and activities from the daily life, myths and legends of the Inuit. Inuit art since the 1950s has been the traditional gift given to foreign dignitaries by the Canadian government. The works of most early Canadian painters followed European trends. During the mid-19th century, Cornelius Krieghoff, a Dutch-born artist in Quebec, painted scenes of the life of the habitants (French-Canadian farmers). At about the same time, the Canadian artist Paul Kane painted pictures of indigenous life in western Canada. A group of landscape painters called the Group of Seven developed the first distinctly Canadian style of painting, inspired by the works of the legendary landscape painter Tom Thomson. All these artists painted large, brilliantly coloured scenes of the Canadian wilderness. Since the 1930s, Canadian painters have developed a wide range of highly individual styles. Emily Carr became famous for her paintings of totem poles in British Columbia. Other noted painters have included the landscape artist David Milne, the painters Jean-Paul Riopelle, Harold Town and Charles Carson and multi-media artist Michael Snow. The abstract art group Painters Eleven, particularly the artists William Ronald and Jack Bush, also had an important impact on modern art in Canada. Government support has played a vital role in their development enabling visual exposure through publications and periodicals featuring Canadian art, as has the establishment of numerous art schools and colleges across the country. Canadian literature is often divided into French- and English-language literatures, which are rooted in the literary traditions of France and Britain, respectively. Canada's early literature, whether written in English or French, often reflects the Canadian perspective on nature, frontier life, and Canada's position in the world, for example the poetry of Bliss Carman or the memoirs of Susanna Moodie and Catherine Parr Traill. These themes, and Canada's literary history, inform the writing of successive generations of Canadian authors, from Leonard Cohen to Margaret Atwood. By the mid-20th century, Canadian writers were exploring national themes for Canadian readers. Authors were trying to find a distinctly Canadian voice, rather than merely emulating British or American writers. Canadian identity is closely tied to its literature. The question of national identity recurs as a theme in much of Canada's literature, from Hugh MacLennan's Two Solitudes (1945) to Alistair MacLeod's No Great Mischief (1999). Canadian literature is often categorized by region or province; by the socio-cultural origins of the author (for example, Acadians, indigenous peoples, LGBT, and Irish Canadians); and by literary period, such as "Canadian postmoderns" or "Canadian Poets Between the Wars". Canadian authors have accumulated numerous international awards. In 1992, Michael Ondaatje became the first Canadian to win the Booker Prize for The English Patient. Margaret Atwood won the Booker in 2000 for The Blind Assassin and Yann Martel won it in 2002 for the Life of Pi. Carol Shields's The Stone Diaries won the Governor General's Awards in Canada in 1993, the 1995 Pulitzer Prize for Fiction, and the 1994 National Book Critics Circle Award. In 2013, Alice Munro was the first Canadian to be awarded the Nobel Prize in Literature for her work as "master of the modern short story". Munro is also a recipient of the Man Booker International Prize for her lifetime body of work, and three-time winner of Canada's Governor General's Award for fiction. Canada has had a thriving stage theatre scene since the late 1800s. Theatre festivals draw many tourists in the summer months, especially the Stratford Shakespeare Festival in Stratford, Ontario, and the Shaw Festival in Niagara-on-the-Lake, Ontario. The Famous People Players are only one of many touring companies that have also developed an international reputation. Canada also hosts one of the largest fringe festivals, the Edmonton International Fringe Festival. Canada's largest cities host a variety of modern and historical venues. The Toronto Theatre District is Canada's largest, as well as being the third largest English-speaking theatre district in the world. In addition to original Canadian works, shows from the West End and Broadway frequently tour in Toronto. Toronto's Theatre District includes the venerable Roy Thomson Hall; the Princess of Wales Theatre; the Tim Sims Playhouse; The Second City; the Canon Theatre; the Panasonic Theatre; the Royal Alexandra Theatre; historic Massey Hall; and the city's new opera house, the Sony Centre for the Performing Arts. Toronto's Theatre District also includes the Theatre Museum Canada. Montreal's theatre district ("Quartier des Spectacles") is the scene of performances that are mainly French-language, although the city also boasts a lively anglophone theatre scene, such as the Centaur Theatre. Large French theatres in the city include Théâtre Saint-Denis and Théâtre du Nouveau Monde. Vancouver is host to, among others, the Vancouver Fringe Festival, the Arts Club Theatre Company, Carousel Theatre, Bard on the Beach, Theatre Under the Stars and Studio 58. Calgary is home to Theatre Calgary, a mainstream regional theatre; Alberta Theatre Projects, a major centre for new play development in Canada; the Calgary Animated Objects Society; and One Yellow Rabbit, a touring company. There are three major theatre venues in Ottawa; the Ottawa Little Theatre, originally called the Ottawa Drama League at its inception in 1913, is the longest-running community theatre company in Ottawa. Since 1969, Ottawa has been the home of the National Arts Centre, a major performing-arts venue that houses four stages and is home to the National Arts Centre Orchestra, the Ottawa Symphony Orchestra and Opera Lyra Ottawa. Established in 1975, the Great Canadian Theatre Company specializes in the production of Canadian plays at a local level. Canadian television, especially supported by the Canadian Broadcasting Corporation, is the home of a variety of locally produced shows. French-language television, like French Canadian film, is buffered from excessive American influence by the fact of language, and likewise supports a host of home-grown productions. The success of French-language domestic television in Canada often exceeds that of its English-language counterpart. In recent years nationalism has been used to prompt products on television. The I Am Canadian campaign by Molson beer, most notably the commercial featuring Joe Canadian, infused domestically brewed beer and nationalism. Canada's television industry is in full expansion as a site for Hollywood productions. Since the 1980s, Canada, and Vancouver in particular, has become known as Hollywood North. The American TV series Queer as Folk was filmed in Toronto. Canadian producers have been very successful in the field of science fiction since the mid-1990s, with such shows as The X-Files, Stargate SG-1, Highlander: The Series, the new Battlestar Galactica, My Babysitter's a Vampire, Smallville, and The Outer Limits all filmed in Vancouver. The CRTC's Canadian content regulations dictate that a certain percentage of a domestic broadcaster's transmission time must include content that is produced by Canadians, or covers Canadian subjects. These regulations also apply to US cable television channels such as MTV and the Discovery Channel, which have local versions of their channels available on Canadian cable networks. Similarly, BBC Canada, while showing primarily BBC shows from the United Kingdom, also carries Canadian output. A number of Canadian pioneers in early Hollywood significantly contributed to the creation of the motion picture industry in the early days of the 20th century. Over the years, many Canadians have made enormous contributions to the American entertainment industry, although they are frequently not recognized as Canadians. Canada has developed a vigorous film industry that has produced a variety of well-known films and actors. In fact, this eclipsing may sometimes be creditable for the bizarre and innovative directions of some works, such as auteurs Atom Egoyan (The Sweet Hereafter, 1997) and David Cronenberg (The Fly, Naked Lunch, A History of Violence) and the avant-garde work of Michael Snow and Jack Chambers. Also, the distinct French-Canadian society permits the work of directors such as Denys Arcand and Denis Villeneuve, while First Nations cinema includes the likes of Atanarjuat: The Fast Runner. At the 76th Academy Awards, Arcand's The Barbarian Invasions became Canada's first film to win the Academy Award for Best Foreign Language Film. The National Film Board of Canada is a public agency that produces and distributes films and other audiovisual works which reflect Canada to Canadians and the rest of the world'. Canada has produced many popular documentaries such as The Corporation, Nanook of the North, Final Offer, and Canada: A People's History. The Toronto International Film Festival (TIFF) is considered by many to be one of the most prevalent film festivals for Western cinema. It is the première film festival in North America from which the Oscars race begins. The music of Canada has reflected the multi-cultural influences that have shaped the country. Indigenous, the French, and the British have all made historical contributions to the musical heritage of Canada. The country has produced its own composers, musicians and ensembles since the mid-1600s. From the 17th century onward, Canada has developed a music infrastructure that includes church halls; chamber halls; conservatories; academies; performing arts centres; record companies; radio stations, and television music-video channels. The music has subsequently been heavily influenced by American culture because of its proximity and migration between the two countries. Canadian rock has had a considerable impact on the development of modern popular music and the development of the most popular subgenres. Patriotic music in Canada dates back over 200 years as a distinct category from British patriotism, preceding the first legal steps to independence by over 50 years. The earliest known song, "The Bold Canadian", was written in 1812. The national anthem of Canada, "O Canada" adopted in 1980, was originally commissioned by the Lieutenant Governor of Quebec, the Honourable Théodore Robitaille, for the 1880 Saint-Jean-Baptiste Day ceremony. Calixa Lavallée wrote the music, which was a setting of a patriotic poem composed by the poet and judge Sir Adolphe-Basile Routhier. The text was originally only in French, before English lyrics were written in 1906. Music broadcasting in the country is regulated by the Canadian Radio-television and Telecommunications Commission (CRTC). The Canadian Academy of Recording Arts and Sciences presents Canada's music industry awards, the Juno Awards, which were first awarded in a ceremony during the summer of 1970. Canada's media is highly autonomous, uncensored, diverse, and very regionalized. The Broadcasting Act declares "the system should serve to safeguard, enrich, and strengthen the cultural, political, social, and economic fabric of Canada". Canada has a well-developed media sector, but its cultural output—particularly in English films, television shows, and magazines—is often overshadowed by imports from the United States. As a result, the preservation of a distinctly Canadian culture is supported by federal government programs, laws, and institutions such as the Canadian Broadcasting Corporation (CBC), the National Film Board of Canada (NFB), and the Canadian Radio-television and Telecommunications Commission (CRTC). Canadian mass media, both print and digital, and in both official languages, is largely dominated by a "handful of corporations". The largest of these corporations is the country's national public broadcaster, the Canadian Broadcasting Corporation, which also plays a significant role in producing domestic cultural content, operating its own radio and TV networks in both English and French. In addition to the CBC, some provincial governments offer their own public educational TV broadcast services as well, such as TVOntario and Télé-Québec. Non-news media content in Canada, including film and television, is influenced both by local creators as well as by imports from the United States, the United Kingdom, Australia, and France. In an effort to reduce the amount of foreign-made media, government interventions in television broadcasting can include both regulation of content and public financing. Canadian tax laws limit foreign competition in magazine advertising. Sports in Canada consists of a variety of games. Although there are many contests that Canadians value, the most common are ice hockey, box lacrosse, Canadian football, basketball, soccer, curling, baseball and ringette. All but curling and soccer are considered domestic sports as they were either invented by Canadians or trace their roots to Canada. Ice hockey, referred to as simply "hockey", is Canada's most prevalent winter sport, its most popular spectator sport, and its most successful sport in international competition. It is Canada's official national winter sport. Lacrosse, a sport with indigenous origins, is Canada's oldest and official summer sport. Canadian football is Canada's second most popular spectator sport, and the Canadian Football League's annual championship, the Grey Cup, is the country's largest annual sports event. While other sports have a larger spectator base, association football, known in Canada as soccer in both English and French, has the most registered players of any team sport in Canada, and is the most played sport with all demographics, including ethnic origin, ages and genders. Professional teams exist in many cities in Canada – with a trio of teams in North America's top pro league, Major League Soccer – and international soccer competitions such as the FIFA World Cup, UEFA Euro and the UEFA Champions League attract some of the biggest audiences in Canada. Other popular team sports include curling, street hockey, cricket, rugby league, rugby union, softball and Ultimate frisbee. Popular individual sports include auto racing, boxing, karate, kickboxing, hunting, sport shooting, fishing, cycling, golf, hiking, horse racing, ice skating, skiing, snowboarding, swimming, triathlon, disc golf, water sports, and several forms of wrestling. As a country with a generally cool climate, Canada has enjoyed greater success at the Winter Olympics than at the Summer Olympics, although significant regional variations in climate allow for a wide variety of both team and individual sports. Great achievements in Canadian sports are recognized by Canada's Sports Hall of Fame, while the Lou Marsh Trophy is awarded annually to Canada's top athlete by a panel of journalists. There are numerous other Sports Halls of Fame in Canada. Canadian cuisine varies widely depending on the region. The former Canadian prime minister Joe Clark has been paraphrased to have noted: "Canada has a cuisine of cuisines. Not a stew pot, but a smorgasbord." While there are considerable overlaps between Canadian food and the rest of the cuisine in North America, many unique dishes (or versions of certain dishes) are found and available only in the country. Common contenders for the Canadian national food include poutine and butter tarts. Other popular Canadian made foods include indigenous fried bread bannock, French tourtière, Kraft Dinner, ketchup chips, date squares, nanaimo bars, back bacon, the caesar cocktail and many many more. The Canadian province of Quebec is the birthplace and world's largest producer of maple syrup, The Montreal-style bagel and Montreal-style smoked meat are both food items originally developed by Jewish communities living in Quebec The three earliest cuisines of Canada have First Nations, English, and French roots. The indigenous population of Canada often have their own traditional cuisine. The cuisines of English Canada are closely related to British and American cuisine. Finally, the traditional cuisines of French Canada have evolved from 16th-century French cuisine because of the tough conditions of colonial life and the winter provisions of Coureur des bois. With subsequent waves of immigration in the 18th and 19th century from Central, Southern, and Eastern Europe, and then from Asia, Africa and Caribbean, the regional cuisines were subsequently affected. A 2022 web survey by the Association for Canadian Studies found that an absolute majority of respondents in all provinces except Alberta disagreed with the statement that "there is only one Canadian culture". Most respondents didn't choose what music to listen to based on whether or not the artist was Canadian. While half of Quebeckers and more than one third of respondents in the rest of Canada agreed that "I worry about preserving my culture" at the same time 60% of respondents agreed that "If a Canadian artist is good enough, they will become discovered without the need for specific Canadian content rules". Forty-six percent of respondents had no favourite Canadian musical artist. Rock, pop, and country music were the most popular genres of music, with above twenty percent fan bases in all age categories, but with hip-hop also appealing to more than twenty percent in the youngest cohort (18–35 years old). Film genre preferences were largely as the same across age categories, with comedies and action films the most popular, except that only one percent of older people (>55 years old) were fans of animated movies compared to eleven percent in young adults, while older adults showed a strong preference for dramas compared to younger people. Three out of four respondents could not name a single Canadian visual artist, living or dead. In a 2002 interview with the Globe and Mail, Aga Khan, the 49th Imam of the Ismaili Muslims, described Canada as "the most successful pluralist society on the face of our globe", citing it as "a model for the world". A 2007 poll ranked Canada as the country with the most positive influence in the world. 28,000 people in 27 countries were asked to rate 12 countries as either having a positive or negative worldwide influence. Canada's overall influence rating topped the list with 54 per cent of respondents rating it mostly positive and only 14 per cent mostly negative. A global opinion poll for the BBC saw Canada ranked the second most positively viewed nation in the world (behind Germany) in 2013 and 2014. The United States is home to a number of perceptions about Canadian culture, due to the countries' partially shared heritage and the relatively large number of cultural features common to both the US and Canada. For example, the average Canadian may be perceived as more reserved than his or her American counterpart. Canada and the United States are often inevitably compared as sibling countries, and the perceptions that arise from this oft-held contrast have gone to shape the advertised worldwide identities of both nations: the United States is seen as the rebellious child of the British Crown, forged in the fires of violent revolution; Canada is the calmer offspring of the United Kingdom, known for a more relaxed national demeanour. Canada portal	[ { "paragraph_id": 0, "text": "The culture of Canada embodies the artistic, culinary, literary, humour, musical, political and social elements that are representative of Canadians. Throughout Canada's history, its culture has been influenced firstly by its indigenous cultures, and later by European culture and traditions, mostly by the British and French. Over time, elements of the cultures of Canada's immigrant populations have become incorporated to form a Canadian cultural mosaic. Certain segments of Canada's population have, to varying extents, also been influenced by American culture due to shared language (in English-speaking Canada), significant media penetration and geographic proximity.", "title": "" }, { "paragraph_id": 1, "text": "Canada is often characterized as being \"very progressive, diverse, and multicultural\". Canada's federal government has often been described as the instigator of multicultural ideology because of its public emphasis on the social importance of immigration. Canada's culture draws from its broad range of constituent nationalities, and policies that promote a just society are constitutionally protected. Canadian policies—such as abortion, euthanasia, same-sex marriage, and cannabis; an emphasis on cultural diversity; large-scale immigration; outlawing capital punishment; publicly funded health care; higher and more progressive taxation; efforts to eliminate poverty; and strict gun control are social indicators of the country's political and cultural values. Canadians identify with the country's institutions of health care, military peacekeeping, the national park system, and the Canadian Charter of Rights and Freedoms. In 2015, Prime Minister Justin Trudeau defined the country as the world's first postnational state: \"There is no core identity, no mainstream in Canada\".", "title": "" }, { "paragraph_id": 2, "text": "The Canadian government has influenced culture with programs, laws and institutions. It has created crown corporations to promote Canadian culture through media, such as the Canadian Broadcasting Corporation (CBC) and the National Film Board of Canada (NFB), and promotes many events which it considers to promote Canadian traditions. It has also tried to protect Canadian culture by setting legal minimums on Canadian content in many media using bodies like the Canadian Radio-television and Telecommunications Commission (CRTC).", "title": "" }, { "paragraph_id": 3, "text": "For thousands of years, Canada has been inhabited by indigenous peoples from a variety of different cultures and of several major linguistic groupings. Although not without conflict and bloodshed, early European interactions with First Nations and Inuit populations in what is now Canada were arguably peaceful. First Nations and Métis peoples played a critical part in the development of European colonies in Canada, particularly for their role in assisting European coureur des bois and voyageurs in the exploration of the continent during the North American fur trade. Over the course of three centuries, countless North American Indigenous words, inventions, concepts, and games have become an everyday part of Canadian language and use. Many places in Canada, both natural features and human habitations, use indigenous names. The name \"Canada\" itself derives from the St. Lawrence Huron-Iroquoian word \"Kanata\" meaning \"village\" or \"settlement\". The name of Canada's capital city Ottawa comes from the Algonquin language term \"adawe\" meaning \"to trade\".", "title": "Cultural components" }, { "paragraph_id": 4, "text": "In the 17th-century, French colonials settled New France in Acadia, in the present-day Maritimes, and in Canada, along the Saint Lawrence River in present-day Quebec and Ontario. These regions were under French control from 1534 to 1763. However, the British conquered Acadia in 1710 and conquered Canada in 1760. The British were able to deport most of the Acadians, but they were unable to deport the Canadiens of Canada because they severely outnumbered the British forces. The British therefore had to make deals with Canadiens and hope they would one day become assimilated. The American Revolution, from 1775 to 1783, provoked the migration of 40,000 to 50,000 United Empire Loyalists from the Thirteen Colonies to the newly conquered British lands, which brought American influences to Canada for the first time. Following the War of 1812, many Scottish and English people settled in Upper Canada and Lower Canada. Many Irish people fleeing the Great Famine also arrived between 1845 and 1852.", "title": "Cultural components" }, { "paragraph_id": 5, "text": "The Canadian Forces and overall civilian participation in the First World War and Second World War helped to foster Canadian nationalism; however, in 1917 and 1944, conscription crises highlighted the considerable rift along ethnic lines between Anglophones and Francophones. As a result of the First and Second World Wars, the Government of Canada became more assertive and less deferential to British authority. Canada, until the 1940s, was often described as \"binational\", with the 2 components being the cultural, linguistic and political identities of English Canadians and of French Canadians.", "title": "Cultural components" }, { "paragraph_id": 6, "text": "Legislative restrictions on immigration (such as the Continuous journey regulation and Chinese Immigration Act) that had favoured British, American and other European immigrants (such as Dutch, German, Italian, Polish, Swedish and Ukrainian) were amended during the 1960s, resulting in an influx of people of many different ethnicities. By the end of the 20th century, immigrants were increasingly Chinese, Indian, Vietnamese, Jamaican, Filipino, Lebanese, Pakistani and Haitian. By the 21st century Canada had thirty four ethnic groups with at least one hundred thousand members each, of which eleven have over 1,000,000 people and numerous others are represented in smaller numbers. As of 2006, 16.2% of the population self-identify as a visible minority.", "title": "Cultural components" }, { "paragraph_id": 7, "text": "Themes and symbols of pioneers, trappers, and traders played an important part in the early development of Canadian culture. Modern Canadian culture as it is understood today can be traced to its time period of westward expansion and nation building. Contributing factors include Canada's unique geography, climate, and cultural makeup. Being a cold country with long winter nights for most of the year, certain unique leisure activities developed in Canada during this period including ice hockey and embracement of the summer indigenous game of lacrosse.", "title": "Cultural components" }, { "paragraph_id": 8, "text": "By the 19th century, Canadians came to believe themselves possessed of a unique \"northern character,\" due to the long, harsh winters that only those of hardy body and mind could survive. This hardiness was claimed as a Canadian trait, and sports that reflected this, such as snowshoeing and cross-country skiing, were asserted as characteristically Canadian. During this period, the churches tried to influence leisure activities by preaching against drinking, and scheduling annual revivals and weekly club activities. In a society in which most middle-class families now owned a harmonium or piano, and standard education included at least the rudiments of music, the result was often an original song. Such stirrings frequently occurred in response to noteworthy events, and few local or national excitements were allowed to pass without some musical comment.", "title": "Cultural components" }, { "paragraph_id": 9, "text": "By the 1930s, radio played a major role in uniting Canadians behind their local or regional teams. Rural areas were especially influenced by sports coverage and the propagation of national myths. Outside the sports and music arena, Canadians expressed a national character of being hard working, peaceful, orderly and polite.", "title": "Cultural components" }, { "paragraph_id": 10, "text": "French Canada's early development was relatively cohesive during the 17th and 18th centuries, and this was preserved by the Quebec Act of 1774, which allowed Roman Catholics to hold offices and practice their faith. In 1867, the Constitution Act was thought to meet the growing calls for Canadian autonomy while avoiding the overly strong decentralization that contributed to the Civil War in the United States. The compromises reached during this time between the English- and French-speaking Fathers of Confederation set Canada on a path to bilingualism which in turn contributed to an acceptance of diversity. The English and French languages have had limited constitutional protection since 1867 and full official status since 1969. Section 133 of the Constitution Act of 1867 (BNA Act) guarantees that both languages may be used in the Parliament of Canada. Canada adopted its first Official Languages Act in 1969, giving English and French equal status in the government of Canada. Doing so makes them \"official\" languages, having preferred status in law over all other languages used in Canada.", "title": "Cultural components" }, { "paragraph_id": 11, "text": "Prior to the advent of the Canadian Bill of Rights in 1960 and its successor the Canadian Charter of Rights and Freedoms in 1982, the laws of Canada did not provide much in the way of civil rights and this issue was typically of limited concern to the courts. Canada since the 1960s has placed emphasis on equality and inclusiveness for all people. Multiculturalism in Canada was adopted as the official policy of the Canadian government and is enshrined in Section 27 of the Canadian Charter of Rights and Freedoms. In 1995, the Supreme Court of Canada ruled in Egan v. Canada that sexual orientation should be \"read in\" to Section Fifteen of the Canadian Charter of Rights and Freedoms, a part of the Constitution of Canada guaranteeing equal rights to all Canadians. Following a series of decisions by provincial courts and the Supreme Court of Canada, on July 20, 2005, the Civil Marriage Act (Bill C-38) became law, legalizing same-sex marriage in Canada. Furthermore, sexual orientation was included as a protected status in the human-rights laws of the federal government and of all provinces and territories.", "title": "Cultural components" }, { "paragraph_id": 12, "text": "Canadian governments at the federal level have a tradition of liberalism, and govern with a moderate, centrist political ideology. Canada's egalitarian approach to governance emphasizing social justice and multiculturalism, is based on selective immigration, social integration, and suppression of far-right politics that has wide public and political support. Peace, order, and good government are constitutional goals of the Canadian government.", "title": "Cultural components" }, { "paragraph_id": 13, "text": "Canada has a multi-party system in which many of its legislative customs derive from the unwritten conventions of and precedents set by the Westminster parliament of the United Kingdom. The country has been dominated by two parties, the centre-left Liberal Party of Canada and the centre-right Conservative Party of Canada. The historically predominant Liberals position themselves at the centre of the political scale, with the Conservatives sitting on the right and the New Democratic Party occupying the left. Smaller parties like the Quebec nationalist Bloc Québécois and the Green Party of Canada have also been able to exert their influence over the political process by representation at the federal level.", "title": "Cultural components" }, { "paragraph_id": 14, "text": "In general, Canadian nationalists are concerned about the protection of Canadian sovereignty and loyalty to the Canadian State, placing them in the civic nationalist category. It has likewise often been suggested that anti-Americanism plays a prominent role in Canadian nationalist ideologies. A unified, bi-cultural, tolerant and sovereign Canada remains an ideological inspiration to many Canadian nationalists. Alternatively Quebecois nationalism and support for maintaining French Canadian culture many of whom were supporters of the Quebec sovereignty movement during the late-20th century.", "title": "Cultural components" }, { "paragraph_id": 15, "text": "Cultural protectionism in Canada has, since the mid-20th century, taken the form of conscious, interventionist attempts on the part of various Canadian governments to promote Canadian cultural production. Sharing a large border, a common language (for the majority), and being exposed to massive diffusions of American media makes it difficult for Canada to preserve its own culture versus being assimilated to American culture. While Canada tries to maintain its cultural differences, it also must balance this with responsibility in trade arrangements such as the General Agreement on Tariffs and Trade (GATT) and the United States–Mexico–Canada Agreement (USMCA).", "title": "Cultural components" }, { "paragraph_id": 16, "text": "Canadian values are the perceived commonly shared ethical and human values of Canadians. The major political parties have claimed explicitly that they uphold Canadian values, but use generalities to specify them. Historian Ian MacKay argues that, thanks to the long-term political impact of \"Rebels, Reds, and Radicals\", and allied leftist political elements, \"egalitarianism, social equality, and peace... are now often simply referred to...as 'Canadian values.'\" Canada ranks among the highest in international measurements of government transparency, civil liberties, quality of life, economic freedom, education, and gender equality.", "title": "Cultural components" }, { "paragraph_id": 17, "text": "A 2013 Statistics Canada survey found that an \"overwhelming majority\" of Canadians shared the values of human rights (with 92% of respondents agreeing that they are a shared Canadian value), respect for the law (92%) and gender equality (91%). Universal access to publicly funded health services \"is often considered by Canadians as a fundamental value that ensures national health care insurance for everyone wherever they live in the country.\"", "title": "Cultural components" }, { "paragraph_id": 18, "text": "The Canadian Charter of Rights and Freedoms, was intended to be a source for Canadian values and national unity. The 15th Prime Minister Pierre Trudeau wrote in his Memoirs that:", "title": "Cultural components" }, { "paragraph_id": 19, "text": "Canada itself could now be defined as a \"society where all people are equal and where they share some fundamental values based upon freedom\", and that all Canadians could identify with the values of liberty and equality.", "title": "Cultural components" }, { "paragraph_id": 20, "text": "Numerous scholars, beginning in the 1940s with American sociologist Seymour Martin Lipset; have tried to identify, measure and compare them with other countries, especially the United States. However, there are critics who say that such a task is practically impossible.", "title": "Cultural components" }, { "paragraph_id": 21, "text": "Denis Stairs a professor of political Science at Dalhousie University; links the concept of Canadian values with nationalism. [Canadians typically]...believe, in particular, that they subscribe to a distinctive set of values - Canadian values - and that those values are special in the sense of being unusually virtuous.", "title": "Cultural components" }, { "paragraph_id": 22, "text": "Canada's large geographic size, the presence of a significant number of indigenous peoples, the conquest of one European linguistic population by another and relatively open immigration policy have led to an extremely diverse society. As a result, the issue of Canadian identity remains under scrutiny.", "title": "Cultural components" }, { "paragraph_id": 23, "text": "Canada has constitutional protection for policies that promote multiculturalism rather than cultural assimilation or a single national myth. In Quebec, cultural identity is strong, and many commentators speak of a French Canadian culture as distinguished from English Canadian culture. However, as a whole, Canada is in theory, a cultural mosaic—a collection of several regional, and ethnic subcultures.", "title": "Cultural components" }, { "paragraph_id": 24, "text": "As Professor Alan Cairns noted about the Canadian Charter of Rights and Freedoms , \"the initial federal government premise was on developing a pan-Canadian identity\"'. Pierre Trudeau himself later wrote in his Memoirs (1993) that \"Canada itself\" could now be defined as a \"society where all people are equal and where they share some fundamental values based upon freedom\", and that all Canadians could identify with the values of liberty and equality.", "title": "Cultural components" }, { "paragraph_id": 25, "text": "Political philosopher Charles Blattberg suggests that Canada is a \"multinational country\"; as all Canadians are members of Canada as a civic or political community, a community of citizens, and this is a community that contains many other kinds within it. These include not only communities of ethnic, regional, religious, and civic (the provincial and municipal governments) sorts, but also national communities, which often include or overlap with many of the other kinds.", "title": "Cultural components" }, { "paragraph_id": 26, "text": "Journalist and author Richard Gwyn has suggested that \"tolerance\" has replaced \"loyalty\" as the touchstone of Canadian identity. Journalist and professor Andrew Cohen wrote in 2007:", "title": "Cultural components" }, { "paragraph_id": 27, "text": "The Canadian Identity, as it has come to be known, is as elusive as the Sasquatch and Ogopogo. It has animated—and frustrated—generations of statesmen, historians, writers, artists, philosophers, and the National Film Board ... Canada resists easy definition.", "title": "Cultural components" }, { "paragraph_id": 28, "text": "Canada's 15th prime minister Pierre Trudeau in regards to uniformity stated:", "title": "Cultural components" }, { "paragraph_id": 29, "text": "Uniformity is neither desirable nor possible in a country the size of Canada. We should not even be able to agree upon the kind of Canadian to choose as a model, let alone persuade most people to emulate it. There are few policies potentially more disastrous for Canada than to tell all Canadians that they must be alike. There is no such thing as a model or ideal Canadian. What could be more absurd than the concept of an \"all-Canadian\" boy or girl? A society which emphasizes uniformity is one which creates intolerance and hate.", "title": "Cultural components" }, { "paragraph_id": 30, "text": "The question of Canadian identity was traditionally dominated by three fundamental themes: first, the often conflicted relations between English Canadians and French Canadians stemming from the French Canadian imperative for cultural and linguistic survival; secondly, the generally close ties between English Canadians and the British Empire, resulting in a gradual political process towards complete independence from the imperial power; and finally, the close proximity of English-speaking Canadians to the United States. Much of the debate over contemporary Canadian identity is argued in political terms, and defines Canada as a country defined by its government policies, which are thought to reflect deeper cultural values.", "title": "Cultural components" }, { "paragraph_id": 31, "text": "In 2013, more than 90% of Canadians believed that the Canadian Charter of Rights and Freedoms and the national flag were the top symbols of Canadian identity. Next highest were the national anthem, the Royal Canadian Mounted Police and hockey.", "title": "Cultural components" }, { "paragraph_id": 32, "text": "Western alienation is the notion that the western provinces have historically been alienated, and in extreme cases excluded, from mainstream Canadian political affairs in favour of Eastern Canada or more specifically the central provinces. Western alienation claims that these latter two are politically represented, and economically favoured, more significantly than the former, which has given rise to the sentiment of alienation among many western Canadians. Likewise; the Quebec sovereignty movement that lead to the Québécois nation and the province of Quebec being recognized as a \"distinct society\" within Canada, highlights the sharp divisions between the Anglo and Francophone population.", "title": "Cultural components" }, { "paragraph_id": 33, "text": "Though more than half of Canadians live in just two provinces (Ontario and Quebec), each province is largely self-contained due to provincial economic self-sufficiency. Only 15 percent of Canadians live in a different province from where they were born, and only 10 percent go to another province for university. Canada has always been like this, and stands in sharp contrast to the United States' internal mobility which is much higher. For example 30 percent live in a different state from where they were born, and 30 percent go away for university. Scott Gilmore in Maclean's argues that \"Canada is a nation of strangers\", in the sense that for most individuals, the rest of Canada outside their province is little-known. Another factor is the cost of internal travel. Intra-Canadian airfares are high—it is cheaper and more common to visit the United States than to visit another province. Gilmore argues that the mutual isolation makes it difficult to muster national responses to major national issues.", "title": "Cultural components" }, { "paragraph_id": 34, "text": "Canadian humour is an integral part of the Canadian Identity. There are several traditions in Canadian humour in both English and French. While these traditions are distinct and at times very different, there are common themes that relate to Canadians' shared history and geopolitical situation in the Western Hemisphere and the world. Various trends can be noted in Canadian comedy. One trend is the portrayal of a \"typical\" Canadian family in an ongoing radio or television series. Other trends include outright absurdity, and political and cultural satire. Irony, parody, satire, and self-deprecation are arguably the primary characteristics of Canadian humour.", "title": "Cultural components" }, { "paragraph_id": 35, "text": "The beginnings of Canadian national radio comedy date to the late 1930s with the debut of The Happy Gang, a long-running weekly variety show that was regularly sprinkled with corny jokes in between tunes. Canadian television comedy begins with Wayne and Shuster, a sketch comedy duo who performed as a comedy team during the Second World War, and moved their act to radio in 1946 before moving on to television. Second City Television, otherwise known as SCTV, Royal Canadian Air Farce, This Hour Has 22 Minutes, The Kids in the Hall, Trailer Park Boys, Corner gas and more recently Schitt's Creek are regarded as television shows which were very influential on the development of Canadian humour. Canadian comedians have had great success in the film industry and are amongst the most recognized in the world.", "title": "Cultural components" }, { "paragraph_id": 36, "text": "Humber College in Toronto and the École nationale de l'humour in Montreal offer post-secondary programmes in comedy writing and performance. Montreal is also home to the bilingual (English and French) Just for Laughs festival and to the Just for Laughs Museum, a bilingual, international museum of comedy. Canada has a national television channel, The Comedy Network, devoted to comedy. Many Canadian cities feature comedy clubs and showcases, most notable, The Second City branch in Toronto (originally housed at The Old Fire Hall) and the Yuk Yuk's national chain. The Canadian Comedy Awards were founded in 1999 by the Canadian Comedy Foundation for Excellence, a not-for-profit organization.", "title": "Cultural components" }, { "paragraph_id": 37, "text": "Predominant symbols of Canada include the maple leaf, beaver, and the Canadian horse. Many official symbols of the country such as the Flag of Canada have been changed or modified over the past few decades to Canadianize them and de-emphasise or remove references to the United Kingdom. Other prominent symbols include the sports of hockey and lacrosse, the Canada goose, the Royal Canadian Mounted Police, the Canadian Rockies, and more recently the totem pole and Inuksuk; material items such as Canadian beer, maple syrup, tuques, canoes, nanaimo bars, butter tarts and the Quebec dish of poutine have also been defined as uniquely Canadian. Symbols of the Canadian monarchy continue to be featured in, for example, the Arms of Canada, the armed forces, and the prefix His Majesty's Canadian Ship. The designation Royal remains for institutions as varied as the Royal Canadian Armed Forces, Royal Canadian Mounted Police and the Royal Winnipeg Ballet.", "title": "Symbols" }, { "paragraph_id": 38, "text": "Indigenous artists were producing art in the territory that is now called Canada for thousands of years prior to the arrival of European settler colonists and the eventual establishment of Canada as a nation state. Like the peoples that produced them, indigenous art traditions spanned territories that extended across the current national boundaries between Canada and the United States. The majority of indigenous artworks preserved in museum collections date from the period after European contact and show evidence of the creative adoption and adaptation of European trade goods such as metal and glass beads. Canadian sculpture has been enriched by the walrus ivory, muskox horn and caribou antler and soapstone carvings by the Inuit artists. These carvings show objects and activities from the daily life, myths and legends of the Inuit. Inuit art since the 1950s has been the traditional gift given to foreign dignitaries by the Canadian government.", "title": "Arts" }, { "paragraph_id": 39, "text": "The works of most early Canadian painters followed European trends. During the mid-19th century, Cornelius Krieghoff, a Dutch-born artist in Quebec, painted scenes of the life of the habitants (French-Canadian farmers). At about the same time, the Canadian artist Paul Kane painted pictures of indigenous life in western Canada. A group of landscape painters called the Group of Seven developed the first distinctly Canadian style of painting, inspired by the works of the legendary landscape painter Tom Thomson. All these artists painted large, brilliantly coloured scenes of the Canadian wilderness.", "title": "Arts" }, { "paragraph_id": 40, "text": "Since the 1930s, Canadian painters have developed a wide range of highly individual styles. Emily Carr became famous for her paintings of totem poles in British Columbia. Other noted painters have included the landscape artist David Milne, the painters Jean-Paul Riopelle, Harold Town and Charles Carson and multi-media artist Michael Snow. The abstract art group Painters Eleven, particularly the artists William Ronald and Jack Bush, also had an important impact on modern art in Canada. Government support has played a vital role in their development enabling visual exposure through publications and periodicals featuring Canadian art, as has the establishment of numerous art schools and colleges across the country.", "title": "Arts" }, { "paragraph_id": 41, "text": "Canadian literature is often divided into French- and English-language literatures, which are rooted in the literary traditions of France and Britain, respectively. Canada's early literature, whether written in English or French, often reflects the Canadian perspective on nature, frontier life, and Canada's position in the world, for example the poetry of Bliss Carman or the memoirs of Susanna Moodie and Catherine Parr Traill. These themes, and Canada's literary history, inform the writing of successive generations of Canadian authors, from Leonard Cohen to Margaret Atwood.", "title": "Arts" }, { "paragraph_id": 42, "text": "By the mid-20th century, Canadian writers were exploring national themes for Canadian readers. Authors were trying to find a distinctly Canadian voice, rather than merely emulating British or American writers. Canadian identity is closely tied to its literature. The question of national identity recurs as a theme in much of Canada's literature, from Hugh MacLennan's Two Solitudes (1945) to Alistair MacLeod's No Great Mischief (1999). Canadian literature is often categorized by region or province; by the socio-cultural origins of the author (for example, Acadians, indigenous peoples, LGBT, and Irish Canadians); and by literary period, such as \"Canadian postmoderns\" or \"Canadian Poets Between the Wars\".", "title": "Arts" }, { "paragraph_id": 43, "text": "Canadian authors have accumulated numerous international awards. In 1992, Michael Ondaatje became the first Canadian to win the Booker Prize for The English Patient. Margaret Atwood won the Booker in 2000 for The Blind Assassin and Yann Martel won it in 2002 for the Life of Pi. Carol Shields's The Stone Diaries won the Governor General's Awards in Canada in 1993, the 1995 Pulitzer Prize for Fiction, and the 1994 National Book Critics Circle Award. In 2013, Alice Munro was the first Canadian to be awarded the Nobel Prize in Literature for her work as \"master of the modern short story\". Munro is also a recipient of the Man Booker International Prize for her lifetime body of work, and three-time winner of Canada's Governor General's Award for fiction.", "title": "Arts" }, { "paragraph_id": 44, "text": "Canada has had a thriving stage theatre scene since the late 1800s. Theatre festivals draw many tourists in the summer months, especially the Stratford Shakespeare Festival in Stratford, Ontario, and the Shaw Festival in Niagara-on-the-Lake, Ontario. The Famous People Players are only one of many touring companies that have also developed an international reputation. Canada also hosts one of the largest fringe festivals, the Edmonton International Fringe Festival.", "title": "Arts" }, { "paragraph_id": 45, "text": "Canada's largest cities host a variety of modern and historical venues. The Toronto Theatre District is Canada's largest, as well as being the third largest English-speaking theatre district in the world. In addition to original Canadian works, shows from the West End and Broadway frequently tour in Toronto. Toronto's Theatre District includes the venerable Roy Thomson Hall; the Princess of Wales Theatre; the Tim Sims Playhouse; The Second City; the Canon Theatre; the Panasonic Theatre; the Royal Alexandra Theatre; historic Massey Hall; and the city's new opera house, the Sony Centre for the Performing Arts. Toronto's Theatre District also includes the Theatre Museum Canada.", "title": "Arts" }, { "paragraph_id": 46, "text": "Montreal's theatre district (\"Quartier des Spectacles\") is the scene of performances that are mainly French-language, although the city also boasts a lively anglophone theatre scene, such as the Centaur Theatre. Large French theatres in the city include Théâtre Saint-Denis and Théâtre du Nouveau Monde.", "title": "Arts" }, { "paragraph_id": 47, "text": "Vancouver is host to, among others, the Vancouver Fringe Festival, the Arts Club Theatre Company, Carousel Theatre, Bard on the Beach, Theatre Under the Stars and Studio 58.", "title": "Arts" }, { "paragraph_id": 48, "text": "Calgary is home to Theatre Calgary, a mainstream regional theatre; Alberta Theatre Projects, a major centre for new play development in Canada; the Calgary Animated Objects Society; and One Yellow Rabbit, a touring company.", "title": "Arts" }, { "paragraph_id": 49, "text": "There are three major theatre venues in Ottawa; the Ottawa Little Theatre, originally called the Ottawa Drama League at its inception in 1913, is the longest-running community theatre company in Ottawa. Since 1969, Ottawa has been the home of the National Arts Centre, a major performing-arts venue that houses four stages and is home to the National Arts Centre Orchestra, the Ottawa Symphony Orchestra and Opera Lyra Ottawa. Established in 1975, the Great Canadian Theatre Company specializes in the production of Canadian plays at a local level.", "title": "Arts" }, { "paragraph_id": 50, "text": "Canadian television, especially supported by the Canadian Broadcasting Corporation, is the home of a variety of locally produced shows. French-language television, like French Canadian film, is buffered from excessive American influence by the fact of language, and likewise supports a host of home-grown productions. The success of French-language domestic television in Canada often exceeds that of its English-language counterpart. In recent years nationalism has been used to prompt products on television. The I Am Canadian campaign by Molson beer, most notably the commercial featuring Joe Canadian, infused domestically brewed beer and nationalism.", "title": "Arts" }, { "paragraph_id": 51, "text": "Canada's television industry is in full expansion as a site for Hollywood productions. Since the 1980s, Canada, and Vancouver in particular, has become known as Hollywood North. The American TV series Queer as Folk was filmed in Toronto. Canadian producers have been very successful in the field of science fiction since the mid-1990s, with such shows as The X-Files, Stargate SG-1, Highlander: The Series, the new Battlestar Galactica, My Babysitter's a Vampire, Smallville, and The Outer Limits all filmed in Vancouver.", "title": "Arts" }, { "paragraph_id": 52, "text": "The CRTC's Canadian content regulations dictate that a certain percentage of a domestic broadcaster's transmission time must include content that is produced by Canadians, or covers Canadian subjects. These regulations also apply to US cable television channels such as MTV and the Discovery Channel, which have local versions of their channels available on Canadian cable networks. Similarly, BBC Canada, while showing primarily BBC shows from the United Kingdom, also carries Canadian output.", "title": "Arts" }, { "paragraph_id": 53, "text": "A number of Canadian pioneers in early Hollywood significantly contributed to the creation of the motion picture industry in the early days of the 20th century. Over the years, many Canadians have made enormous contributions to the American entertainment industry, although they are frequently not recognized as Canadians.", "title": "Arts" }, { "paragraph_id": 54, "text": "Canada has developed a vigorous film industry that has produced a variety of well-known films and actors. In fact, this eclipsing may sometimes be creditable for the bizarre and innovative directions of some works, such as auteurs Atom Egoyan (The Sweet Hereafter, 1997) and David Cronenberg (The Fly, Naked Lunch, A History of Violence) and the avant-garde work of Michael Snow and Jack Chambers. Also, the distinct French-Canadian society permits the work of directors such as Denys Arcand and Denis Villeneuve, while First Nations cinema includes the likes of Atanarjuat: The Fast Runner. At the 76th Academy Awards, Arcand's The Barbarian Invasions became Canada's first film to win the Academy Award for Best Foreign Language Film.", "title": "Arts" }, { "paragraph_id": 55, "text": "The National Film Board of Canada is a public agency that produces and distributes films and other audiovisual works which reflect Canada to Canadians and the rest of the world'. Canada has produced many popular documentaries such as The Corporation, Nanook of the North, Final Offer, and Canada: A People's History. The Toronto International Film Festival (TIFF) is considered by many to be one of the most prevalent film festivals for Western cinema. It is the première film festival in North America from which the Oscars race begins.", "title": "Arts" }, { "paragraph_id": 56, "text": "The music of Canada has reflected the multi-cultural influences that have shaped the country. Indigenous, the French, and the British have all made historical contributions to the musical heritage of Canada. The country has produced its own composers, musicians and ensembles since the mid-1600s. From the 17th century onward, Canada has developed a music infrastructure that includes church halls; chamber halls; conservatories; academies; performing arts centres; record companies; radio stations, and television music-video channels. The music has subsequently been heavily influenced by American culture because of its proximity and migration between the two countries. Canadian rock has had a considerable impact on the development of modern popular music and the development of the most popular subgenres.", "title": "Arts" }, { "paragraph_id": 57, "text": "Patriotic music in Canada dates back over 200 years as a distinct category from British patriotism, preceding the first legal steps to independence by over 50 years. The earliest known song, \"The Bold Canadian\", was written in 1812. The national anthem of Canada, \"O Canada\" adopted in 1980, was originally commissioned by the Lieutenant Governor of Quebec, the Honourable Théodore Robitaille, for the 1880 Saint-Jean-Baptiste Day ceremony. Calixa Lavallée wrote the music, which was a setting of a patriotic poem composed by the poet and judge Sir Adolphe-Basile Routhier. The text was originally only in French, before English lyrics were written in 1906.", "title": "Arts" }, { "paragraph_id": 58, "text": "Music broadcasting in the country is regulated by the Canadian Radio-television and Telecommunications Commission (CRTC). The Canadian Academy of Recording Arts and Sciences presents Canada's music industry awards, the Juno Awards, which were first awarded in a ceremony during the summer of 1970.", "title": "Arts" }, { "paragraph_id": 59, "text": "Canada's media is highly autonomous, uncensored, diverse, and very regionalized. The Broadcasting Act declares \"the system should serve to safeguard, enrich, and strengthen the cultural, political, social, and economic fabric of Canada\". Canada has a well-developed media sector, but its cultural output—particularly in English films, television shows, and magazines—is often overshadowed by imports from the United States. As a result, the preservation of a distinctly Canadian culture is supported by federal government programs, laws, and institutions such as the Canadian Broadcasting Corporation (CBC), the National Film Board of Canada (NFB), and the Canadian Radio-television and Telecommunications Commission (CRTC).", "title": "Media" }, { "paragraph_id": 60, "text": "Canadian mass media, both print and digital, and in both official languages, is largely dominated by a \"handful of corporations\". The largest of these corporations is the country's national public broadcaster, the Canadian Broadcasting Corporation, which also plays a significant role in producing domestic cultural content, operating its own radio and TV networks in both English and French. In addition to the CBC, some provincial governments offer their own public educational TV broadcast services as well, such as TVOntario and Télé-Québec.", "title": "Media" }, { "paragraph_id": 61, "text": "Non-news media content in Canada, including film and television, is influenced both by local creators as well as by imports from the United States, the United Kingdom, Australia, and France. In an effort to reduce the amount of foreign-made media, government interventions in television broadcasting can include both regulation of content and public financing. Canadian tax laws limit foreign competition in magazine advertising.", "title": "Media" }, { "paragraph_id": 62, "text": "Sports in Canada consists of a variety of games. Although there are many contests that Canadians value, the most common are ice hockey, box lacrosse, Canadian football, basketball, soccer, curling, baseball and ringette. All but curling and soccer are considered domestic sports as they were either invented by Canadians or trace their roots to Canada.", "title": "Sports" }, { "paragraph_id": 63, "text": "Ice hockey, referred to as simply \"hockey\", is Canada's most prevalent winter sport, its most popular spectator sport, and its most successful sport in international competition. It is Canada's official national winter sport. Lacrosse, a sport with indigenous origins, is Canada's oldest and official summer sport. Canadian football is Canada's second most popular spectator sport, and the Canadian Football League's annual championship, the Grey Cup, is the country's largest annual sports event.", "title": "Sports" }, { "paragraph_id": 64, "text": "While other sports have a larger spectator base, association football, known in Canada as soccer in both English and French, has the most registered players of any team sport in Canada, and is the most played sport with all demographics, including ethnic origin, ages and genders. Professional teams exist in many cities in Canada – with a trio of teams in North America's top pro league, Major League Soccer – and international soccer competitions such as the FIFA World Cup, UEFA Euro and the UEFA Champions League attract some of the biggest audiences in Canada. Other popular team sports include curling, street hockey, cricket, rugby league, rugby union, softball and Ultimate frisbee. Popular individual sports include auto racing, boxing, karate, kickboxing, hunting, sport shooting, fishing, cycling, golf, hiking, horse racing, ice skating, skiing, snowboarding, swimming, triathlon, disc golf, water sports, and several forms of wrestling.", "title": "Sports" }, { "paragraph_id": 65, "text": "As a country with a generally cool climate, Canada has enjoyed greater success at the Winter Olympics than at the Summer Olympics, although significant regional variations in climate allow for a wide variety of both team and individual sports. Great achievements in Canadian sports are recognized by Canada's Sports Hall of Fame, while the Lou Marsh Trophy is awarded annually to Canada's top athlete by a panel of journalists. There are numerous other Sports Halls of Fame in Canada.", "title": "Sports" }, { "paragraph_id": 66, "text": "Canadian cuisine varies widely depending on the region. The former Canadian prime minister Joe Clark has been paraphrased to have noted: \"Canada has a cuisine of cuisines. Not a stew pot, but a smorgasbord.\" While there are considerable overlaps between Canadian food and the rest of the cuisine in North America, many unique dishes (or versions of certain dishes) are found and available only in the country. Common contenders for the Canadian national food include poutine and butter tarts. Other popular Canadian made foods include indigenous fried bread bannock, French tourtière, Kraft Dinner, ketchup chips, date squares, nanaimo bars, back bacon, the caesar cocktail and many many more. The Canadian province of Quebec is the birthplace and world's largest producer of maple syrup, The Montreal-style bagel and Montreal-style smoked meat are both food items originally developed by Jewish communities living in Quebec", "title": "Cuisine" }, { "paragraph_id": 67, "text": "The three earliest cuisines of Canada have First Nations, English, and French roots. The indigenous population of Canada often have their own traditional cuisine. The cuisines of English Canada are closely related to British and American cuisine. Finally, the traditional cuisines of French Canada have evolved from 16th-century French cuisine because of the tough conditions of colonial life and the winter provisions of Coureur des bois. With subsequent waves of immigration in the 18th and 19th century from Central, Southern, and Eastern Europe, and then from Asia, Africa and Caribbean, the regional cuisines were subsequently affected.", "title": "Cuisine" }, { "paragraph_id": 68, "text": "A 2022 web survey by the Association for Canadian Studies found that an absolute majority of respondents in all provinces except Alberta disagreed with the statement that \"there is only one Canadian culture\". Most respondents didn't choose what music to listen to based on whether or not the artist was Canadian. While half of Quebeckers and more than one third of respondents in the rest of Canada agreed that \"I worry about preserving my culture\" at the same time 60% of respondents agreed that \"If a Canadian artist is good enough, they will become discovered without the need for specific Canadian content rules\". Forty-six percent of respondents had no favourite Canadian musical artist. Rock, pop, and country music were the most popular genres of music, with above twenty percent fan bases in all age categories, but with hip-hop also appealing to more than twenty percent in the youngest cohort (18–35 years old). Film genre preferences were largely as the same across age categories, with comedies and action films the most popular, except that only one percent of older people (>55 years old) were fans of animated movies compared to eleven percent in young adults, while older adults showed a strong preference for dramas compared to younger people. Three out of four respondents could not name a single Canadian visual artist, living or dead.", "title": "Public opinion data on culture" }, { "paragraph_id": 69, "text": "In a 2002 interview with the Globe and Mail, Aga Khan, the 49th Imam of the Ismaili Muslims, described Canada as \"the most successful pluralist society on the face of our globe\", citing it as \"a model for the world\". A 2007 poll ranked Canada as the country with the most positive influence in the world. 28,000 people in 27 countries were asked to rate 12 countries as either having a positive or negative worldwide influence. Canada's overall influence rating topped the list with 54 per cent of respondents rating it mostly positive and only 14 per cent mostly negative. A global opinion poll for the BBC saw Canada ranked the second most positively viewed nation in the world (behind Germany) in 2013 and 2014.", "title": "Outside views" }, { "paragraph_id": 70, "text": "The United States is home to a number of perceptions about Canadian culture, due to the countries' partially shared heritage and the relatively large number of cultural features common to both the US and Canada. For example, the average Canadian may be perceived as more reserved than his or her American counterpart. Canada and the United States are often inevitably compared as sibling countries, and the perceptions that arise from this oft-held contrast have gone to shape the advertised worldwide identities of both nations: the United States is seen as the rebellious child of the British Crown, forged in the fires of violent revolution; Canada is the calmer offspring of the United Kingdom, known for a more relaxed national demeanour.", "title": "Outside views" }, { "paragraph_id": 71, "text": "Canada portal", "title": "See also" } ]	The culture of Canada embodies the artistic, culinary, literary, humour, musical, political and social elements that are representative of Canadians. Throughout Canada's history, its culture has been influenced firstly by its indigenous cultures, and later by European culture and traditions, mostly by the British and French. Over time, elements of the cultures of Canada's immigrant populations have become incorporated to form a Canadian cultural mosaic. Certain segments of Canada's population have, to varying extents, also been influenced by American culture due to shared language, significant media penetration and geographic proximity. Canada is often characterized as being "very progressive, diverse, and multicultural". Canada's federal government has often been described as the instigator of multicultural ideology because of its public emphasis on the social importance of immigration. Canada's culture draws from its broad range of constituent nationalities, and policies that promote a just society are constitutionally protected. Canadian policies—such as abortion, euthanasia, same-sex marriage, and cannabis; an emphasis on cultural diversity; large-scale immigration; outlawing capital punishment; publicly funded health care; higher and more progressive taxation; efforts to eliminate poverty; and strict gun control are social indicators of the country's political and cultural values. Canadians identify with the country's institutions of health care, military peacekeeping, the national park system, and the Canadian Charter of Rights and Freedoms. In 2015, Prime Minister Justin Trudeau defined the country as the world's first postnational state: "There is no core identity, no mainstream in Canada". The Canadian government has influenced culture with programs, laws and institutions. It has created crown corporations to promote Canadian culture through media, such as the Canadian Broadcasting Corporation (CBC) and the National Film Board of Canada (NFB), and promotes many events which it considers to promote Canadian traditions. It has also tried to protect Canadian culture by setting legal minimums on Canadian content in many media using bodies like the Canadian Radio-television and Telecommunications Commission (CRTC).	2001-11-04T17:58:08Z	2023-12-31T09:29:02Z	[ "Template:Short description", "Template:Multiculturalism in Canada navbox", "Template:As of", "Template:Cite encyclopedia", "Template:Refbegin", "Template:Refend", "Template:Portal-inline", "Template:Reflist", "Template:Cite web", "Template:Cite press release", "Template:North America in topic", "Template:Use mdy dates", "Template:Cite journal", "Template:ISBN", "Template:Commons category", "Template:Canada topics", "Template:Cite book", "Template:Cite news", "Template:ISSN", "Template:Cbignore", "Template:Webarchive", "Template:People of Canada", "Template:Lang-fr", "Template:Blockquote", "Template:Citation", "Template:Use Canadian English", "Template:If mobile", "Template:Main", "Template:Canada provinces map", "Template:Clear", "Template:Cite report" ]	https://en.wikipedia.org/wiki/Culture_of_Canada
7,000	List of companies of Canada	Canada is a country in the northern part of North America. Canada is the world's eighth-largest economy as of 2022, with a nominal GDP of approximately US$2.2 trillion. It is a member of the Organisation for Economic Co-operation and Development (OECD) and the Group of Seven (G7), and is one of the world's top ten trading nations, with a highly globalized economy. Canada is a mixed economy, ranking above the US and most western European nations on The Heritage Foundation's index of economic freedom, and experiencing a relatively low level of income disparity. The country's average household disposable income per capita is over US$23,900, higher than the OECD average. Furthermore, the Toronto Stock Exchange is the seventh-largest stock exchange in the world by market capitalization, listing over 1,500 companies with a combined market capitalization of over US$2 trillion as of 2015. For further information on the types of business entities in this country and their abbreviations, see "Business entities in Canada". This list shows firms in the Fortune Global 500, which ranks firms by total revenues reported before March 31, 2022. Only the top five firms (if available) are included as a sample. This list includes notable companies with primary headquarters located in the country. The industry and sector follow the Industry Classification Benchmark taxonomy. Organizations which have ceased operations are included and noted as defunct.	[ { "paragraph_id": 0, "text": "Canada is a country in the northern part of North America. Canada is the world's eighth-largest economy as of 2022, with a nominal GDP of approximately US$2.2 trillion. It is a member of the Organisation for Economic Co-operation and Development (OECD) and the Group of Seven (G7), and is one of the world's top ten trading nations, with a highly globalized economy. Canada is a mixed economy, ranking above the US and most western European nations on The Heritage Foundation's index of economic freedom, and experiencing a relatively low level of income disparity. The country's average household disposable income per capita is over US$23,900, higher than the OECD average. Furthermore, the Toronto Stock Exchange is the seventh-largest stock exchange in the world by market capitalization, listing over 1,500 companies with a combined market capitalization of over US$2 trillion as of 2015.", "title": "" }, { "paragraph_id": 1, "text": "For further information on the types of business entities in this country and their abbreviations, see \"Business entities in Canada\".", "title": "" }, { "paragraph_id": 2, "text": "This list shows firms in the Fortune Global 500, which ranks firms by total revenues reported before March 31, 2022. Only the top five firms (if available) are included as a sample.", "title": "Largest firms" }, { "paragraph_id": 3, "text": "This list includes notable companies with primary headquarters located in the country. The industry and sector follow the Industry Classification Benchmark taxonomy. Organizations which have ceased operations are included and noted as defunct.", "title": "Notable firms" } ]	Canada is a country in the northern part of North America. Canada is the world's eighth-largest economy as of 2022, with a nominal GDP of approximately US$2.2 trillion. It is a member of the Organisation for Economic Co-operation and Development (OECD) and the Group of Seven (G7), and is one of the world's top ten trading nations, with a highly globalized economy. Canada is a mixed economy, ranking above the US and most western European nations on The Heritage Foundation's index of economic freedom, and experiencing a relatively low level of income disparity. The country's average household disposable income per capita is over US$23,900, higher than the OECD average. Furthermore, the Toronto Stock Exchange is the seventh-largest stock exchange in the world by market capitalization, listing over 1,500 companies with a combined market capitalization of over US$2 trillion as of 2015. For further information on the types of business entities in this country and their abbreviations, see "Business entities in Canada".	2001-11-06T13:01:12Z	2023-12-21T02:11:42Z	[ "Template:Reflist", "Template:Cite web", "Template:Canada topics", "Template:About", "Template:As of", "Template:Company-list table entry", "Template:Company-list table end", "Template:Portal", "Template:Short description", "Template:See also", "Template:Company-list table start", "Template:Americas topic" ]	https://en.wikipedia.org/wiki/List_of_companies_of_Canada
7,003	Cauchy distribution	The Cauchy distribution, named after Augustin Cauchy, is a continuous probability distribution. It is also known, especially among physicists, as the Lorentz distribution (after Hendrik Lorentz), Cauchy–Lorentz distribution, Lorentz(ian) function, or Breit–Wigner distribution. The Cauchy distribution f ( x ; x 0 , γ ) {\displaystyle f(x;x_{0},\gamma )} is the distribution of the x-intercept of a ray issuing from ( x 0 , γ ) {\displaystyle (x_{0},\gamma )} with a uniformly distributed angle. It is also the distribution of the ratio of two independent normally distributed random variables with mean zero. The Cauchy distribution is often used in statistics as the canonical example of a "pathological" distribution since both its expected value and its variance are undefined (but see § Moments below). The Cauchy distribution does not have finite moments of order greater than or equal to one; only fractional absolute moments exist. The Cauchy distribution has no moment generating function. In mathematics, it is closely related to the Poisson kernel, which is the fundamental solution for the Laplace equation in the upper half-plane. It is one of the few stable distributions with a probability density function that can be expressed analytically, the others being the normal distribution and the Lévy distribution. A function with the form of the density function of the Cauchy distribution was studied geometrically by Fermat in 1659, and later was known as the witch of Agnesi, after Agnesi included it as an example in her 1748 calculus textbook. Despite its name, the first explicit analysis of the properties of the Cauchy distribution was published by the French mathematician Poisson in 1824, with Cauchy only becoming associated with it during an academic controversy in 1853. Poisson noted that if the mean of observations following such a distribution were taken, the mean error did not converge to any finite number. As such, Laplace's use of the central limit theorem with such a distribution was inappropriate, as it assumed a finite mean and variance. Despite this, Poisson did not regard the issue as important, in contrast to Bienaymé, who was to engage Cauchy in a long dispute over the matter. Like any important probability distribution, or any important concept in mathematics, there are multiple ways to construct the Cauchy distribution family. Here are the most important constructions. If one stands in front of a line and kicks a ball with a direction (more precisely, an angle) uniformly at random towards the line, then the distribution of the point where the ball hits the line is a Cauchy distribution. More formally, consider a point at ( x 0 , γ ) {\displaystyle (x_{0},\gamma )} in the x-y plane, and select a line passing the point, with its direction (angle with the x {\displaystyle x} -axis) chosen uniformly (between -90° and +90°) at random. The intersection of the line with the x-axis is the Cauchy distribution with location x 0 {\displaystyle x_{0}} and scale γ {\displaystyle \gamma } . This definition gives a simple way to sample from the standard Cauchy distribution. Let u {\displaystyle u} be a sample from a uniform distribution from [ 0 , 1 ] {\displaystyle [0,1]} , then we can generate a sample, x {\displaystyle x} from the standard Cauchy distribution using When U {\displaystyle U} and V {\displaystyle V} are two independent normally distributed random variables with expected value 0 and variance 1, then the ratio U / V {\displaystyle U/V} has the standard Cauchy distribution. More generally, if ( U , V ) {\displaystyle (U,V)} is a rotationally symmetric distribution on the plane, then the ratio U / V {\displaystyle U/V} has the standard Cauchy distribution. The Cauchy distribution is the probability distribution with the following probability density function (PDF) where x 0 {\displaystyle x_{0}} is the location parameter, specifying the location of the peak of the distribution, and γ {\displaystyle \gamma } is the scale parameter which specifies the half-width at half-maximum (HWHM), alternatively 2 γ {\displaystyle 2\gamma } is full width at half maximum (FWHM). γ {\displaystyle \gamma } is also equal to half the interquartile range and is sometimes called the probable error. Augustin-Louis Cauchy exploited such a density function in 1827 with an infinitesimal scale parameter, defining what would now be called a Dirac delta function. The maximum value or amplitude of the Cauchy PDF is 1 π γ {\displaystyle {\frac {1}{\pi \gamma }}} , located at x = x 0 {\displaystyle x=x_{0}} . It is sometimes convenient to express the PDF in terms of the complex parameter ψ = x 0 + i γ {\displaystyle \psi =x_{0}+i\gamma } The special case when x 0 = 0 {\displaystyle x_{0}=0} and γ = 1 {\displaystyle \gamma =1} is called the standard Cauchy distribution with the probability density function In physics, a three-parameter Lorentzian function is often used: where I {\displaystyle I} is the height of the peak. The three-parameter Lorentzian function indicated is not, in general, a probability density function, since it does not integrate to 1, except in the special case where I = 1 π γ . {\displaystyle I={\frac {1}{\pi \gamma }}.\!} The Cauchy distribution is the probability distribution with the following cumulative distribution function (CDF): and the quantile function (inverse cdf) of the Cauchy distribution is It follows that the first and third quartiles are ( x 0 − γ , x 0 + γ ) {\displaystyle (x_{0}-\gamma ,x_{0}+\gamma )} , and hence the interquartile range is 2 γ {\displaystyle 2\gamma } . For the standard distribution, the cumulative distribution function simplifies to arctangent function arctan ( x ) {\displaystyle \arctan(x)} : The standard Cauchy distribution is the Student's t-distribution with one degree of freedom, and so it may be constructed by any method that constructs the Student's t-distribution. If Σ {\displaystyle \Sigma } is a p × p {\displaystyle p\times p} positive-semidefinite covariance matrix with strictly positive diagonal entries, then for independent and identically distributed X , Y ∼ N ( 0 , Σ ) {\displaystyle X,Y\sim N(0,\Sigma )} and any random p {\displaystyle p} -vector w {\displaystyle w} independent of X {\displaystyle X} and Y {\displaystyle Y} such that w 1 + ⋯ + w p = 1 {\displaystyle w_{1}+\cdots +w_{p}=1} and w i ≥ 0 , i = 1 , … , p , {\displaystyle w_{i}\geq 0,i=1,\ldots ,p,} (defining a categorical distribution) it holds that The Cauchy distribution is an example of a distribution which has no mean, variance or higher moments defined. Its mode and median are well defined and are both equal to x 0 {\displaystyle x_{0}} . The Cauchy distribution is an infinitely divisible probability distribution. It is also a strictly stable distribution. Like all stable distributions, the location-scale family to which the Cauchy distribution belongs is closed under linear transformations with real coefficients. In addition, the Cauchy distribution is closed under linear fractional transformations with real coefficients. In this connection, see also McCullagh's parametrization of the Cauchy distributions. If X 1 , X 2 , . . . , X n {\displaystyle X_{1},X_{2},...,X_{n}} are IID samples from the standard Cauchy distribution, then their sample mean X ¯ = 1 n ∑ i X i {\displaystyle {\bar {X}}={\frac {1}{n}}\sum _{i}X_{i}} is also standard Cauchy distributed. In particular, the average does not converge to the mean, and so the standard Cauchy distribution does not follow the law of large numbers. This can be proved by repeated integration with the PDF, or more conveniently, by using the characteristic function of standard Cauchy distribution (see below): With this, we have φ ∑ i X i ( t ) = e − n \| t \| {\displaystyle \varphi _{\sum _{i}X_{i}}(t)=e^{-n\|t\|}} , and so X ¯ {\displaystyle {\bar {X}}} has a standard Cauchy distribution. More generally, if X 1 , X 2 , . . . , X n {\displaystyle X_{1},X_{2},...,X_{n}} are independent and Cauchy distributed with location parameters x 1 , . . . , x n {\displaystyle x_{1},...,x_{n}} and scales γ 1 , . . . , γ n {\displaystyle \gamma _{1},...,\gamma _{n}} , and a 1 , . . . , a n {\displaystyle a_{1},...,a_{n}} are real numbers, then ∑ i a i X i {\displaystyle \sum _{i}a_{i}X_{i}} is Cauchy distributed with location ∑ i a i x i {\displaystyle \sum _{i}a_{i}x_{i}} and scale ∑ i \| a i \| γ i {\displaystyle \sum _{i}\|a_{i}\|\gamma _{i}} . We see that there is no law of large numbers for any weighted sum of independent Cauchy distributions. This shows that the condition of finite variance in the central limit theorem cannot be dropped. It is also an example of a more generalized version of the central limit theorem that is characteristic of all stable distributions, of which the Cauchy distribution is a special case. If X 1 , X 2 , . . . {\displaystyle X_{1},X_{2},...} are IID samples with PDF ρ {\displaystyle \rho } such that lim c → ∞ 1 c ∫ − c c x 2 ρ ( x ) d x = 2 γ π {\displaystyle \lim _{c\to \infty }{\frac {1}{c}}\int _{-c}^{c}x^{2}\rho (x)dx={\frac {2\gamma }{\pi }}} is finite, but nonzero, then 1 n ∑ i = 1 n X i {\displaystyle {\frac {1}{n}}\sum _{i=1}^{n}X_{i}} converges in distribution to a Cauchy distribution with scale γ {\displaystyle \gamma } . Let X {\displaystyle X} denote a Cauchy distributed random variable. The characteristic function of the Cauchy distribution is given by which is just the Fourier transform of the probability density. The original probability density may be expressed in terms of the characteristic function, essentially by using the inverse Fourier transform: The nth moment of a distribution is the nth derivative of the characteristic function evaluated at t = 0 {\displaystyle t=0} . Observe that the characteristic function is not differentiable at the origin: this corresponds to the fact that the Cauchy distribution does not have well-defined moments higher than the zeroth moment. The Kullback–Leibler divergence between two Cauchy distributions has the following symmetric closed-form formula: Any f-divergence between two Cauchy distributions is symmetric and can be expressed as a function of the chi-squared divergence. Closed-form expression for the total variation, Jensen–Shannon divergence, Hellinger distance, etc are available. The entropy of the Cauchy distribution is given by: The derivative of the quantile function, the quantile density function, for the Cauchy distribution is: The differential entropy of a distribution can be defined in terms of its quantile density, specifically: The Cauchy distribution is the maximum entropy probability distribution for a random variate X {\displaystyle X} for which or, alternatively, for a random variate X {\displaystyle X} for which In its standard form, it is the maximum entropy probability distribution for a random variate X {\displaystyle X} for which The Cauchy distribution is usually used as an illustrative counterexample in elementary probability courses, as a distribution with no well-defined (or "indefinite") moments. If we take IID samples X 1 , X 2 , . . {\displaystyle X_{1},X_{2},..} from the standard Cauchy distribution, then the sequence of their sample mean is S n = 1 n ∑ i = 1 n X i {\displaystyle S_{n}={\frac {1}{n}}\sum _{i=1}^{n}X_{i}} , which also has the standard Cauchy distribution. Consequently, no matter how many terms we take, the sample average does not converge. Similarly, the sample variance V n = 1 n ∑ i = 1 n ( X i − S n ) 2 {\displaystyle V_{n}={\frac {1}{n}}\sum _{i=1}^{n}(X_{i}-S_{n})^{2}} also does not converge. A typical trajectory of S 1 , S 2 , . . . {\displaystyle S_{1},S_{2},...} looks like long periods of slow convergence to zero, punctuated by large jumps away from zero, but never getting too far away. A typical trajectory of V 1 , V 2 , . . . {\displaystyle V_{1},V_{2},...} looks similar, but the jumps accumulate faster than the decay, diverging to infinity. These two kinds of trajectories are plotted in the figure. Moments of sample lower than order 1 would converge to zero. Moments of sample higher than order 2 would diverge to infinity even faster than sample variance. If a probability distribution has a density function f ( x ) {\displaystyle f(x)} , then the mean, if it exists, is given by We may evaluate this two-sided improper integral by computing the sum of two one-sided improper integrals. That is, for an arbitrary real number a {\displaystyle a} . For the integral to exist (even as an infinite value), at least one of the terms in this sum should be finite, or both should be infinite and have the same sign. But in the case of the Cauchy distribution, both the terms in this sum (2) are infinite and have opposite sign. Hence (1) is undefined, and thus so is the mean. Note that the Cauchy principal value of the mean of the Cauchy distribution is which is zero. On the other hand, the related integral is not zero, as can be seen by computing the integral. This again shows that the mean (1) cannot exist. Various results in probability theory about expected values, such as the strong law of large numbers, fail to hold for the Cauchy distribution. The absolute moments for p ∈ ( − 1 , 1 ) {\displaystyle p\in (-1,1)} are defined. For X ∼ C a u c h y ( 0 , γ ) {\displaystyle X\sim \mathrm {Cauchy} (0,\gamma )} we have The Cauchy distribution does not have finite moments of any order. Some of the higher raw moments do exist and have a value of infinity, for example, the raw second moment: By re-arranging the formula, one can see that the second moment is essentially the infinite integral of a constant (here 1). Higher even-powered raw moments will also evaluate to infinity. Odd-powered raw moments, however, are undefined, which is distinctly different from existing with the value of infinity. The odd-powered raw moments are undefined because their values are essentially equivalent to ∞ − ∞ {\displaystyle \infty -\infty } since the two halves of the integral both diverge and have opposite signs. The first raw moment is the mean, which, being odd, does not exist. (See also the discussion above about this.) This in turn means that all of the central moments and standardized moments are undefined since they are all based on the mean. The variance—which is the second central moment—is likewise non-existent (despite the fact that the raw second moment exists with the value infinity). The results for higher moments follow from Hölder's inequality, which implies that higher moments (or halves of moments) diverge if lower ones do. Consider the truncated distribution defined by restricting the standard Cauchy distribution to the interval [−10, 10]. Such a truncated distribution has all moments (and the central limit theorem applies for i.i.d. observations from it); yet for almost all practical purposes it behaves like a Cauchy distribution. Because the parameters of the Cauchy distribution do not correspond to a mean and variance, attempting to estimate the parameters of the Cauchy distribution by using a sample mean and a sample variance will not succeed. For example, if an i.i.d. sample of size n is taken from a Cauchy distribution, one may calculate the sample mean as: Although the sample values x i {\displaystyle x_{i}} will be concentrated about the central value x 0 {\displaystyle x_{0}} , the sample mean will become increasingly variable as more observations are taken, because of the increased probability of encountering sample points with a large absolute value. In fact, the distribution of the sample mean will be equal to the distribution of the observations themselves; i.e., the sample mean of a large sample is no better (or worse) an estimator of x 0 {\displaystyle x_{0}} than any single observation from the sample. Similarly, calculating the sample variance will result in values that grow larger as more observations are taken. Therefore, more robust means of estimating the central value x 0 {\displaystyle x_{0}} and the scaling parameter γ {\displaystyle \gamma } are needed. One simple method is to take the median value of the sample as an estimator of x 0 {\displaystyle x_{0}} and half the sample interquartile range as an estimator of γ {\displaystyle \gamma } . Other, more precise and robust methods have been developed For example, the truncated mean of the middle 24% of the sample order statistics produces an estimate for x 0 {\displaystyle x_{0}} that is more efficient than using either the sample median or the full sample mean. However, because of the fat tails of the Cauchy distribution, the efficiency of the estimator decreases if more than 24% of the sample is used. Maximum likelihood can also be used to estimate the parameters x 0 {\displaystyle x_{0}} and γ {\displaystyle \gamma } . However, this tends to be complicated by the fact that this requires finding the roots of a high degree polynomial, and there can be multiple roots that represent local maxima. Also, while the maximum likelihood estimator is asymptotically efficient, it is relatively inefficient for small samples. The log-likelihood function for the Cauchy distribution for sample size n {\displaystyle n} is: Maximizing the log likelihood function with respect to x 0 {\displaystyle x_{0}} and γ {\displaystyle \gamma } by taking the first derivative produces the following system of equations: Note that is a monotone function in γ {\displaystyle \gamma } and that the solution γ {\displaystyle \gamma } must satisfy Solving just for x 0 {\displaystyle x_{0}} requires solving a polynomial of degree 2 n − 1 {\displaystyle 2n-1} , and solving just for γ {\displaystyle \,\!\gamma } requires solving a polynomial of degree 2 n {\displaystyle 2n} . Therefore, whether solving for one parameter or for both parameters simultaneously, a numerical solution on a computer is typically required. The benefit of maximum likelihood estimation is asymptotic efficiency; estimating x 0 {\displaystyle x_{0}} using the sample median is only about 81% as asymptotically efficient as estimating x 0 {\displaystyle x_{0}} by maximum likelihood. The truncated sample mean using the middle 24% order statistics is about 88% as asymptotically efficient an estimator of x 0 {\displaystyle x_{0}} as the maximum likelihood estimate. When Newton's method is used to find the solution for the maximum likelihood estimate, the middle 24% order statistics can be used as an initial solution for x 0 {\displaystyle x_{0}} . The shape can be estimated using the median of absolute values, since for location 0 Cauchy variables X ∼ C a u c h y ( 0 , γ ) {\displaystyle X\sim \mathrm {Cauchy} (0,\gamma )} , the m e d i a n ( \| X \| ) = γ {\displaystyle \mathrm {median} (\|X\|)=\gamma } the shape parameter. A random vector X = ( X 1 , … , X k ) T {\displaystyle X=(X_{1},\ldots ,X_{k})^{T}} is said to have the multivariate Cauchy distribution if every linear combination of its components Y = a 1 X 1 + ⋯ + a k X k {\displaystyle Y=a_{1}X_{1}+\cdots +a_{k}X_{k}} has a Cauchy distribution. That is, for any constant vector a ∈ R k {\displaystyle a\in \mathbb {R} ^{k}} , the random variable Y = a T X {\displaystyle Y=a^{T}X} should have a univariate Cauchy distribution. The characteristic function of a multivariate Cauchy distribution is given by: where x 0 ( t ) {\displaystyle x_{0}(t)} and γ ( t ) {\displaystyle \gamma (t)} are real functions with x 0 ( t ) {\displaystyle x_{0}(t)} a homogeneous function of degree one and γ ( t ) {\displaystyle \gamma (t)} a positive homogeneous function of degree one. More formally: for all t {\displaystyle t} . An example of a bivariate Cauchy distribution can be given by: Note that in this example, even though the covariance between x {\displaystyle x} and y {\displaystyle y} is 0, x {\displaystyle x} and y {\displaystyle y} are not statistically independent. We also can write this formula for complex variable. Then the probability density function of complex cauchy is : Like how the standard Cauchy distribution is the Student t-distribution with one degree of freedom, the multidimensional Cauchy density is the multivariate Student distribution with one degree of freedom. The density of a k {\displaystyle k} dimension Student distribution with one degree of freedom is: The properties of multidimensional Cauchy distribution are then special cases of the multivariate Student distribution. The Cauchy distribution is the stable distribution of index 1. The Lévy–Khintchine representation of such a stable distribution of parameter γ {\displaystyle \gamma } is given, for X ∼ Stable ( γ , 0 , 0 ) {\displaystyle X\sim \operatorname {Stable} (\gamma ,0,0)\,} by: where and c 1 , γ , c 2 , γ {\displaystyle c_{1,\gamma },c_{2,\gamma }} can be expressed explicitly. In the case γ = 1 {\displaystyle \gamma =1} of the Cauchy distribution, one has c 1 , γ = c 2 , γ {\displaystyle c_{1,\gamma }=c_{2,\gamma }} . This last representation is a consequence of the formula In nuclear and particle physics, the energy profile of a resonance is described by the relativistic Breit–Wigner distribution, while the Cauchy distribution is the (non-relativistic) Breit–Wigner distribution.	[ { "paragraph_id": 0, "text": "The Cauchy distribution, named after Augustin Cauchy, is a continuous probability distribution. It is also known, especially among physicists, as the Lorentz distribution (after Hendrik Lorentz), Cauchy–Lorentz distribution, Lorentz(ian) function, or Breit–Wigner distribution. The Cauchy distribution f ( x ; x 0 , γ ) {\\displaystyle f(x;x_{0},\\gamma )} is the distribution of the x-intercept of a ray issuing from ( x 0 , γ ) {\\displaystyle (x_{0},\\gamma )} with a uniformly distributed angle. It is also the distribution of the ratio of two independent normally distributed random variables with mean zero.", "title": "" }, { "paragraph_id": 1, "text": "The Cauchy distribution is often used in statistics as the canonical example of a \"pathological\" distribution since both its expected value and its variance are undefined (but see § Moments below). The Cauchy distribution does not have finite moments of order greater than or equal to one; only fractional absolute moments exist. The Cauchy distribution has no moment generating function.", "title": "" }, { "paragraph_id": 2, "text": "In mathematics, it is closely related to the Poisson kernel, which is the fundamental solution for the Laplace equation in the upper half-plane.", "title": "" }, { "paragraph_id": 3, "text": "It is one of the few stable distributions with a probability density function that can be expressed analytically, the others being the normal distribution and the Lévy distribution.", "title": "" }, { "paragraph_id": 4, "text": "A function with the form of the density function of the Cauchy distribution was studied geometrically by Fermat in 1659, and later was known as the witch of Agnesi, after Agnesi included it as an example in her 1748 calculus textbook. Despite its name, the first explicit analysis of the properties of the Cauchy distribution was published by the French mathematician Poisson in 1824, with Cauchy only becoming associated with it during an academic controversy in 1853. Poisson noted that if the mean of observations following such a distribution were taken, the mean error did not converge to any finite number. As such, Laplace's use of the central limit theorem with such a distribution was inappropriate, as it assumed a finite mean and variance. Despite this, Poisson did not regard the issue as important, in contrast to Bienaymé, who was to engage Cauchy in a long dispute over the matter.", "title": "History" }, { "paragraph_id": 5, "text": "Like any important probability distribution, or any important concept in mathematics, there are multiple ways to construct the Cauchy distribution family. Here are the most important constructions.", "title": "Constructions" }, { "paragraph_id": 6, "text": "If one stands in front of a line and kicks a ball with a direction (more precisely, an angle) uniformly at random towards the line, then the distribution of the point where the ball hits the line is a Cauchy distribution.", "title": "Constructions" }, { "paragraph_id": 7, "text": "More formally, consider a point at ( x 0 , γ ) {\\displaystyle (x_{0},\\gamma )} in the x-y plane, and select a line passing the point, with its direction (angle with the x {\\displaystyle x} -axis) chosen uniformly (between -90° and +90°) at random. The intersection of the line with the x-axis is the Cauchy distribution with location x 0 {\\displaystyle x_{0}} and scale γ {\\displaystyle \\gamma } .", "title": "Constructions" }, { "paragraph_id": 8, "text": "This definition gives a simple way to sample from the standard Cauchy distribution. Let u {\\displaystyle u} be a sample from a uniform distribution from [ 0 , 1 ] {\\displaystyle [0,1]} , then we can generate a sample, x {\\displaystyle x} from the standard Cauchy distribution using", "title": "Constructions" }, { "paragraph_id": 9, "text": "When U {\\displaystyle U} and V {\\displaystyle V} are two independent normally distributed random variables with expected value 0 and variance 1, then the ratio U / V {\\displaystyle U/V} has the standard Cauchy distribution.", "title": "Constructions" }, { "paragraph_id": 10, "text": "More generally, if ( U , V ) {\\displaystyle (U,V)} is a rotationally symmetric distribution on the plane, then the ratio U / V {\\displaystyle U/V} has the standard Cauchy distribution.", "title": "Constructions" }, { "paragraph_id": 11, "text": "The Cauchy distribution is the probability distribution with the following probability density function (PDF)", "title": "Constructions" }, { "paragraph_id": 12, "text": "where x 0 {\\displaystyle x_{0}} is the location parameter, specifying the location of the peak of the distribution, and γ {\\displaystyle \\gamma } is the scale parameter which specifies the half-width at half-maximum (HWHM), alternatively 2 γ {\\displaystyle 2\\gamma } is full width at half maximum (FWHM). γ {\\displaystyle \\gamma } is also equal to half the interquartile range and is sometimes called the probable error. Augustin-Louis Cauchy exploited such a density function in 1827 with an infinitesimal scale parameter, defining what would now be called a Dirac delta function.", "title": "Constructions" }, { "paragraph_id": 13, "text": "The maximum value or amplitude of the Cauchy PDF is 1 π γ {\\displaystyle {\\frac {1}{\\pi \\gamma }}} , located at x = x 0 {\\displaystyle x=x_{0}} .", "title": "Constructions" }, { "paragraph_id": 14, "text": "It is sometimes convenient to express the PDF in terms of the complex parameter ψ = x 0 + i γ {\\displaystyle \\psi =x_{0}+i\\gamma }", "title": "Constructions" }, { "paragraph_id": 15, "text": "The special case when x 0 = 0 {\\displaystyle x_{0}=0} and γ = 1 {\\displaystyle \\gamma =1} is called the standard Cauchy distribution with the probability density function", "title": "Constructions" }, { "paragraph_id": 16, "text": "In physics, a three-parameter Lorentzian function is often used:", "title": "Constructions" }, { "paragraph_id": 17, "text": "where I {\\displaystyle I} is the height of the peak. The three-parameter Lorentzian function indicated is not, in general, a probability density function, since it does not integrate to 1, except in the special case where I = 1 π γ . {\\displaystyle I={\\frac {1}{\\pi \\gamma }}.\\!}", "title": "Constructions" }, { "paragraph_id": 18, "text": "The Cauchy distribution is the probability distribution with the following cumulative distribution function (CDF):", "title": "Constructions" }, { "paragraph_id": 19, "text": "and the quantile function (inverse cdf) of the Cauchy distribution is", "title": "Constructions" }, { "paragraph_id": 20, "text": "It follows that the first and third quartiles are ( x 0 − γ , x 0 + γ ) {\\displaystyle (x_{0}-\\gamma ,x_{0}+\\gamma )} , and hence the interquartile range is 2 γ {\\displaystyle 2\\gamma } .", "title": "Constructions" }, { "paragraph_id": 21, "text": "For the standard distribution, the cumulative distribution function simplifies to arctangent function arctan ( x ) {\\displaystyle \\arctan(x)} :", "title": "Constructions" }, { "paragraph_id": 22, "text": "The standard Cauchy distribution is the Student's t-distribution with one degree of freedom, and so it may be constructed by any method that constructs the Student's t-distribution.", "title": "Constructions" }, { "paragraph_id": 23, "text": "If Σ {\\displaystyle \\Sigma } is a p × p {\\displaystyle p\\times p} positive-semidefinite covariance matrix with strictly positive diagonal entries, then for independent and identically distributed X , Y ∼ N ( 0 , Σ ) {\\displaystyle X,Y\\sim N(0,\\Sigma )} and any random p {\\displaystyle p} -vector w {\\displaystyle w} independent of X {\\displaystyle X} and Y {\\displaystyle Y} such that w 1 + ⋯ + w p = 1 {\\displaystyle w_{1}+\\cdots +w_{p}=1} and w i ≥ 0 , i = 1 , … , p , {\\displaystyle w_{i}\\geq 0,i=1,\\ldots ,p,} (defining a categorical distribution) it holds that", "title": "Constructions" }, { "paragraph_id": 24, "text": "The Cauchy distribution is an example of a distribution which has no mean, variance or higher moments defined. Its mode and median are well defined and are both equal to x 0 {\\displaystyle x_{0}} .", "title": "Properties" }, { "paragraph_id": 25, "text": "The Cauchy distribution is an infinitely divisible probability distribution. It is also a strictly stable distribution.", "title": "Properties" }, { "paragraph_id": 26, "text": "Like all stable distributions, the location-scale family to which the Cauchy distribution belongs is closed under linear transformations with real coefficients. In addition, the Cauchy distribution is closed under linear fractional transformations with real coefficients. In this connection, see also McCullagh's parametrization of the Cauchy distributions.", "title": "Properties" }, { "paragraph_id": 27, "text": "If X 1 , X 2 , . . . , X n {\\displaystyle X_{1},X_{2},...,X_{n}} are IID samples from the standard Cauchy distribution, then their sample mean X ¯ = 1 n ∑ i X i {\\displaystyle {\\bar {X}}={\\frac {1}{n}}\\sum _{i}X_{i}} is also standard Cauchy distributed. In particular, the average does not converge to the mean, and so the standard Cauchy distribution does not follow the law of large numbers.", "title": "Properties" }, { "paragraph_id": 28, "text": "This can be proved by repeated integration with the PDF, or more conveniently, by using the characteristic function of standard Cauchy distribution (see below):", "title": "Properties" }, { "paragraph_id": 29, "text": "With this, we have φ ∑ i X i ( t ) = e − n \| t \| {\\displaystyle \\varphi _{\\sum _{i}X_{i}}(t)=e^{-n\|t\|}} , and so X ¯ {\\displaystyle {\\bar {X}}} has a standard Cauchy distribution.", "title": "Properties" }, { "paragraph_id": 30, "text": "More generally, if X 1 , X 2 , . . . , X n {\\displaystyle X_{1},X_{2},...,X_{n}} are independent and Cauchy distributed with location parameters x 1 , . . . , x n {\\displaystyle x_{1},...,x_{n}} and scales γ 1 , . . . , γ n {\\displaystyle \\gamma _{1},...,\\gamma _{n}} , and a 1 , . . . , a n {\\displaystyle a_{1},...,a_{n}} are real numbers, then ∑ i a i X i {\\displaystyle \\sum _{i}a_{i}X_{i}} is Cauchy distributed with location ∑ i a i x i {\\displaystyle \\sum _{i}a_{i}x_{i}} and scale ∑ i \| a i \| γ i {\\displaystyle \\sum _{i}\|a_{i}\|\\gamma _{i}} . We see that there is no law of large numbers for any weighted sum of independent Cauchy distributions.", "title": "Properties" }, { "paragraph_id": 31, "text": "This shows that the condition of finite variance in the central limit theorem cannot be dropped. It is also an example of a more generalized version of the central limit theorem that is characteristic of all stable distributions, of which the Cauchy distribution is a special case.", "title": "Properties" }, { "paragraph_id": 32, "text": "If X 1 , X 2 , . . . {\\displaystyle X_{1},X_{2},...} are IID samples with PDF ρ {\\displaystyle \\rho } such that lim c → ∞ 1 c ∫ − c c x 2 ρ ( x ) d x = 2 γ π {\\displaystyle \\lim _{c\\to \\infty }{\\frac {1}{c}}\\int _{-c}^{c}x^{2}\\rho (x)dx={\\frac {2\\gamma }{\\pi }}} is finite, but nonzero, then 1 n ∑ i = 1 n X i {\\displaystyle {\\frac {1}{n}}\\sum _{i=1}^{n}X_{i}} converges in distribution to a Cauchy distribution with scale γ {\\displaystyle \\gamma } .", "title": "Properties" }, { "paragraph_id": 33, "text": "Let X {\\displaystyle X} denote a Cauchy distributed random variable. The characteristic function of the Cauchy distribution is given by", "title": "Properties" }, { "paragraph_id": 34, "text": "which is just the Fourier transform of the probability density. The original probability density may be expressed in terms of the characteristic function, essentially by using the inverse Fourier transform:", "title": "Properties" }, { "paragraph_id": 35, "text": "The nth moment of a distribution is the nth derivative of the characteristic function evaluated at t = 0 {\\displaystyle t=0} . Observe that the characteristic function is not differentiable at the origin: this corresponds to the fact that the Cauchy distribution does not have well-defined moments higher than the zeroth moment.", "title": "Properties" }, { "paragraph_id": 36, "text": "The Kullback–Leibler divergence between two Cauchy distributions has the following symmetric closed-form formula:", "title": "Properties" }, { "paragraph_id": 37, "text": "Any f-divergence between two Cauchy distributions is symmetric and can be expressed as a function of the chi-squared divergence. Closed-form expression for the total variation, Jensen–Shannon divergence, Hellinger distance, etc are available.", "title": "Properties" }, { "paragraph_id": 38, "text": "The entropy of the Cauchy distribution is given by:", "title": "Properties" }, { "paragraph_id": 39, "text": "The derivative of the quantile function, the quantile density function, for the Cauchy distribution is:", "title": "Properties" }, { "paragraph_id": 40, "text": "The differential entropy of a distribution can be defined in terms of its quantile density, specifically:", "title": "Properties" }, { "paragraph_id": 41, "text": "The Cauchy distribution is the maximum entropy probability distribution for a random variate X {\\displaystyle X} for which", "title": "Properties" }, { "paragraph_id": 42, "text": "or, alternatively, for a random variate X {\\displaystyle X} for which", "title": "Properties" }, { "paragraph_id": 43, "text": "In its standard form, it is the maximum entropy probability distribution for a random variate X {\\displaystyle X} for which", "title": "Properties" }, { "paragraph_id": 44, "text": "The Cauchy distribution is usually used as an illustrative counterexample in elementary probability courses, as a distribution with no well-defined (or \"indefinite\") moments.", "title": "Moments" }, { "paragraph_id": 45, "text": "If we take IID samples X 1 , X 2 , . . {\\displaystyle X_{1},X_{2},..} from the standard Cauchy distribution, then the sequence of their sample mean is S n = 1 n ∑ i = 1 n X i {\\displaystyle S_{n}={\\frac {1}{n}}\\sum _{i=1}^{n}X_{i}} , which also has the standard Cauchy distribution. Consequently, no matter how many terms we take, the sample average does not converge.", "title": "Moments" }, { "paragraph_id": 46, "text": "Similarly, the sample variance V n = 1 n ∑ i = 1 n ( X i − S n ) 2 {\\displaystyle V_{n}={\\frac {1}{n}}\\sum _{i=1}^{n}(X_{i}-S_{n})^{2}} also does not converge.", "title": "Moments" }, { "paragraph_id": 47, "text": "A typical trajectory of S 1 , S 2 , . . . {\\displaystyle S_{1},S_{2},...} looks like long periods of slow convergence to zero, punctuated by large jumps away from zero, but never getting too far away. A typical trajectory of V 1 , V 2 , . . . {\\displaystyle V_{1},V_{2},...} looks similar, but the jumps accumulate faster than the decay, diverging to infinity. These two kinds of trajectories are plotted in the figure.", "title": "Moments" }, { "paragraph_id": 48, "text": "Moments of sample lower than order 1 would converge to zero. Moments of sample higher than order 2 would diverge to infinity even faster than sample variance.", "title": "Moments" }, { "paragraph_id": 49, "text": "If a probability distribution has a density function f ( x ) {\\displaystyle f(x)} , then the mean, if it exists, is given by", "title": "Moments" }, { "paragraph_id": 50, "text": "We may evaluate this two-sided improper integral by computing the sum of two one-sided improper integrals. That is,", "title": "Moments" }, { "paragraph_id": 51, "text": "for an arbitrary real number a {\\displaystyle a} .", "title": "Moments" }, { "paragraph_id": 52, "text": "For the integral to exist (even as an infinite value), at least one of the terms in this sum should be finite, or both should be infinite and have the same sign. But in the case of the Cauchy distribution, both the terms in this sum (2) are infinite and have opposite sign. Hence (1) is undefined, and thus so is the mean.", "title": "Moments" }, { "paragraph_id": 53, "text": "Note that the Cauchy principal value of the mean of the Cauchy distribution is", "title": "Moments" }, { "paragraph_id": 54, "text": "which is zero. On the other hand, the related integral", "title": "Moments" }, { "paragraph_id": 55, "text": "is not zero, as can be seen by computing the integral. This again shows that the mean (1) cannot exist.", "title": "Moments" }, { "paragraph_id": 56, "text": "Various results in probability theory about expected values, such as the strong law of large numbers, fail to hold for the Cauchy distribution.", "title": "Moments" }, { "paragraph_id": 57, "text": "The absolute moments for p ∈ ( − 1 , 1 ) {\\displaystyle p\\in (-1,1)} are defined. For X ∼ C a u c h y ( 0 , γ ) {\\displaystyle X\\sim \\mathrm {Cauchy} (0,\\gamma )} we have", "title": "Moments" }, { "paragraph_id": 58, "text": "The Cauchy distribution does not have finite moments of any order. Some of the higher raw moments do exist and have a value of infinity, for example, the raw second moment:", "title": "Moments" }, { "paragraph_id": 59, "text": "By re-arranging the formula, one can see that the second moment is essentially the infinite integral of a constant (here 1). Higher even-powered raw moments will also evaluate to infinity. Odd-powered raw moments, however, are undefined, which is distinctly different from existing with the value of infinity. The odd-powered raw moments are undefined because their values are essentially equivalent to ∞ − ∞ {\\displaystyle \\infty -\\infty } since the two halves of the integral both diverge and have opposite signs. The first raw moment is the mean, which, being odd, does not exist. (See also the discussion above about this.) This in turn means that all of the central moments and standardized moments are undefined since they are all based on the mean. The variance—which is the second central moment—is likewise non-existent (despite the fact that the raw second moment exists with the value infinity).", "title": "Moments" }, { "paragraph_id": 60, "text": "The results for higher moments follow from Hölder's inequality, which implies that higher moments (or halves of moments) diverge if lower ones do.", "title": "Moments" }, { "paragraph_id": 61, "text": "Consider the truncated distribution defined by restricting the standard Cauchy distribution to the interval [−10, 10]. Such a truncated distribution has all moments (and the central limit theorem applies for i.i.d. observations from it); yet for almost all practical purposes it behaves like a Cauchy distribution.", "title": "Moments" }, { "paragraph_id": 62, "text": "Because the parameters of the Cauchy distribution do not correspond to a mean and variance, attempting to estimate the parameters of the Cauchy distribution by using a sample mean and a sample variance will not succeed. For example, if an i.i.d. sample of size n is taken from a Cauchy distribution, one may calculate the sample mean as:", "title": "Estimation of parameters" }, { "paragraph_id": 63, "text": "Although the sample values x i {\\displaystyle x_{i}} will be concentrated about the central value x 0 {\\displaystyle x_{0}} , the sample mean will become increasingly variable as more observations are taken, because of the increased probability of encountering sample points with a large absolute value. In fact, the distribution of the sample mean will be equal to the distribution of the observations themselves; i.e., the sample mean of a large sample is no better (or worse) an estimator of x 0 {\\displaystyle x_{0}} than any single observation from the sample. Similarly, calculating the sample variance will result in values that grow larger as more observations are taken.", "title": "Estimation of parameters" }, { "paragraph_id": 64, "text": "Therefore, more robust means of estimating the central value x 0 {\\displaystyle x_{0}} and the scaling parameter γ {\\displaystyle \\gamma } are needed. One simple method is to take the median value of the sample as an estimator of x 0 {\\displaystyle x_{0}} and half the sample interquartile range as an estimator of γ {\\displaystyle \\gamma } . Other, more precise and robust methods have been developed For example, the truncated mean of the middle 24% of the sample order statistics produces an estimate for x 0 {\\displaystyle x_{0}} that is more efficient than using either the sample median or the full sample mean. However, because of the fat tails of the Cauchy distribution, the efficiency of the estimator decreases if more than 24% of the sample is used.", "title": "Estimation of parameters" }, { "paragraph_id": 65, "text": "Maximum likelihood can also be used to estimate the parameters x 0 {\\displaystyle x_{0}} and γ {\\displaystyle \\gamma } . However, this tends to be complicated by the fact that this requires finding the roots of a high degree polynomial, and there can be multiple roots that represent local maxima. Also, while the maximum likelihood estimator is asymptotically efficient, it is relatively inefficient for small samples. The log-likelihood function for the Cauchy distribution for sample size n {\\displaystyle n} is:", "title": "Estimation of parameters" }, { "paragraph_id": 66, "text": "Maximizing the log likelihood function with respect to x 0 {\\displaystyle x_{0}} and γ {\\displaystyle \\gamma } by taking the first derivative produces the following system of equations:", "title": "Estimation of parameters" }, { "paragraph_id": 67, "text": "Note that", "title": "Estimation of parameters" }, { "paragraph_id": 68, "text": "is a monotone function in γ {\\displaystyle \\gamma } and that the solution γ {\\displaystyle \\gamma } must satisfy", "title": "Estimation of parameters" }, { "paragraph_id": 69, "text": "Solving just for x 0 {\\displaystyle x_{0}} requires solving a polynomial of degree 2 n − 1 {\\displaystyle 2n-1} , and solving just for γ {\\displaystyle \\,\\!\\gamma } requires solving a polynomial of degree 2 n {\\displaystyle 2n} . Therefore, whether solving for one parameter or for both parameters simultaneously, a numerical solution on a computer is typically required. The benefit of maximum likelihood estimation is asymptotic efficiency; estimating x 0 {\\displaystyle x_{0}} using the sample median is only about 81% as asymptotically efficient as estimating x 0 {\\displaystyle x_{0}} by maximum likelihood. The truncated sample mean using the middle 24% order statistics is about 88% as asymptotically efficient an estimator of x 0 {\\displaystyle x_{0}} as the maximum likelihood estimate. When Newton's method is used to find the solution for the maximum likelihood estimate, the middle 24% order statistics can be used as an initial solution for x 0 {\\displaystyle x_{0}} .", "title": "Estimation of parameters" }, { "paragraph_id": 70, "text": "The shape can be estimated using the median of absolute values, since for location 0 Cauchy variables X ∼ C a u c h y ( 0 , γ ) {\\displaystyle X\\sim \\mathrm {Cauchy} (0,\\gamma )} , the m e d i a n ( \| X \| ) = γ {\\displaystyle \\mathrm {median} (\|X\|)=\\gamma } the shape parameter.", "title": "Estimation of parameters" }, { "paragraph_id": 71, "text": "A random vector X = ( X 1 , … , X k ) T {\\displaystyle X=(X_{1},\\ldots ,X_{k})^{T}} is said to have the multivariate Cauchy distribution if every linear combination of its components Y = a 1 X 1 + ⋯ + a k X k {\\displaystyle Y=a_{1}X_{1}+\\cdots +a_{k}X_{k}} has a Cauchy distribution. That is, for any constant vector a ∈ R k {\\displaystyle a\\in \\mathbb {R} ^{k}} , the random variable Y = a T X {\\displaystyle Y=a^{T}X} should have a univariate Cauchy distribution. The characteristic function of a multivariate Cauchy distribution is given by:", "title": "Multivariate Cauchy distribution" }, { "paragraph_id": 72, "text": "where x 0 ( t ) {\\displaystyle x_{0}(t)} and γ ( t ) {\\displaystyle \\gamma (t)} are real functions with x 0 ( t ) {\\displaystyle x_{0}(t)} a homogeneous function of degree one and γ ( t ) {\\displaystyle \\gamma (t)} a positive homogeneous function of degree one. More formally:", "title": "Multivariate Cauchy distribution" }, { "paragraph_id": 73, "text": "for all t {\\displaystyle t} .", "title": "Multivariate Cauchy distribution" }, { "paragraph_id": 74, "text": "An example of a bivariate Cauchy distribution can be given by:", "title": "Multivariate Cauchy distribution" }, { "paragraph_id": 75, "text": "Note that in this example, even though the covariance between x {\\displaystyle x} and y {\\displaystyle y} is 0, x {\\displaystyle x} and y {\\displaystyle y} are not statistically independent.", "title": "Multivariate Cauchy distribution" }, { "paragraph_id": 76, "text": "We also can write this formula for complex variable. Then the probability density function of complex cauchy is :", "title": "Multivariate Cauchy distribution" }, { "paragraph_id": 77, "text": "Like how the standard Cauchy distribution is the Student t-distribution with one degree of freedom, the multidimensional Cauchy density is the multivariate Student distribution with one degree of freedom. The density of a k {\\displaystyle k} dimension Student distribution with one degree of freedom is:", "title": "Multivariate Cauchy distribution" }, { "paragraph_id": 78, "text": "The properties of multidimensional Cauchy distribution are then special cases of the multivariate Student distribution.", "title": "Multivariate Cauchy distribution" }, { "paragraph_id": 79, "text": "The Cauchy distribution is the stable distribution of index 1. The Lévy–Khintchine representation of such a stable distribution of parameter γ {\\displaystyle \\gamma } is given, for X ∼ Stable ( γ , 0 , 0 ) {\\displaystyle X\\sim \\operatorname {Stable} (\\gamma ,0,0)\\,} by:", "title": "Lévy measure" }, { "paragraph_id": 80, "text": "where", "title": "Lévy measure" }, { "paragraph_id": 81, "text": "and c 1 , γ , c 2 , γ {\\displaystyle c_{1,\\gamma },c_{2,\\gamma }} can be expressed explicitly. In the case γ = 1 {\\displaystyle \\gamma =1} of the Cauchy distribution, one has c 1 , γ = c 2 , γ {\\displaystyle c_{1,\\gamma }=c_{2,\\gamma }} .", "title": "Lévy measure" }, { "paragraph_id": 82, "text": "This last representation is a consequence of the formula", "title": "Lévy measure" }, { "paragraph_id": 83, "text": "In nuclear and particle physics, the energy profile of a resonance is described by the relativistic Breit–Wigner distribution, while the Cauchy distribution is the (non-relativistic) Breit–Wigner distribution.", "title": "Relativistic Breit–Wigner distribution" } ]	The Cauchy distribution, named after Augustin Cauchy, is a continuous probability distribution. It is also known, especially among physicists, as the Lorentz distribution, Cauchy–Lorentz distribution, Lorentz(ian) function, or Breit–Wigner distribution. The Cauchy distribution f is the distribution of the x-intercept of a ray issuing from with a uniformly distributed angle. It is also the distribution of the ratio of two independent normally distributed random variables with mean zero. The Cauchy distribution is often used in statistics as the canonical example of a "pathological" distribution since both its expected value and its variance are undefined. The Cauchy distribution does not have finite moments of order greater than or equal to one; only fractional absolute moments exist. The Cauchy distribution has no moment generating function. In mathematics, it is closely related to the Poisson kernel, which is the fundamental solution for the Laplace equation in the upper half-plane. It is one of the few stable distributions with a probability density function that can be expressed analytically, the others being the normal distribution and the Lévy distribution.	2001-11-05T11:24:16Z	2023-12-19T13:49:12Z	[ "Template:ProbDistributions", "Template:Math", "Template:Reflist", "Template:Cite book", "Template:Cite web", "Template:Cite arXiv", "Template:Webarchive", "Template:MathWorld", "Template:Slink", "Template:Explain", "Template:EquationNote", "Template:Citation needed", "Template:NumBlk", "Template:Main article", "Template:Cite journal", "Template:Citation", "Template:Short description", "Template:Distinguish-redirect", "Template:Probability distribution", "Template:Mvar", "Template:Springer" ]	https://en.wikipedia.org/wiki/Cauchy_distribution
7,011	Control engineering	Control engineering or control systems engineering is an engineering discipline that deals with control systems, applying control theory to design equipment and systems with desired behaviors in control environments. The discipline of controls overlaps and is usually taught along with electrical engineering and mechanical engineering at many institutions around the world. The practice uses sensors and detectors to measure the output performance of the process being controlled; these measurements are used to provide corrective feedback helping to achieve the desired performance. Systems designed to perform without requiring human input are called automatic control systems (such as cruise control for regulating the speed of a car). Multi-disciplinary in nature, control systems engineering activities focus on implementation of control systems mainly derived by mathematical modeling of a diverse range of systems. Modern day control engineering is a relatively new field of study that gained significant attention during the 20th century with the advancement of technology. It can be broadly defined or classified as practical application of control theory. Control engineering plays an essential role in a wide range of control systems, from simple household washing machines to high-performance fighter aircraft. It seeks to understand physical systems, using mathematical modelling, in terms of inputs, outputs and various components with different behaviors; to use control system design tools to develop controllers for those systems; and to implement controllers in physical systems employing available technology. A system can be mechanical, electrical, fluid, chemical, financial or biological, and its mathematical modelling, analysis and controller design uses control theory in one or many of the time, frequency and complex-s domains, depending on the nature of the design problem. Control engineering is the engineering discipline that focuses on the modeling of a diverse range of dynamic systems (e.g. mechanical systems) and the design of controllers that will cause these systems to behave in the desired manner. Although such controllers need not be electrical, many are and hence control engineering is often viewed as a subfield of electrical engineering. Electrical circuits, digital signal processors and microcontrollers can all be used to implement control systems. Control engineering has a wide range of applications from the flight and propulsion systems of commercial airliners to the cruise control present in many modern automobiles. In most cases, control engineers utilize feedback when designing control systems. This is often accomplished using a PID controller system. For example, in an automobile with cruise control the vehicle's speed is continuously monitored and fed back to the system, which adjusts the motor's torque accordingly. Where there is regular feedback, control theory can be used to determine how the system responds to such feedback. In practically all such systems stability is important and control theory can help ensure stability is achieved. Although feedback is an important aspect of control engineering, control engineers may also work on the control of systems without feedback. This is known as open loop control. A classic example of open loop control is a washing machine that runs through a pre-determined cycle without the use of sensors. Automatic control systems were first developed over two thousand years ago. The first feedback control device on record is thought to be the ancient Ktesibios's water clock in Alexandria, Egypt, around the third century BCE. It kept time by regulating the water level in a vessel and, therefore, the water flow from that vessel. This certainly was a successful device as water clocks of similar design were still being made in Baghdad when the Mongols captured the city in 1258 CE. A variety of automatic devices have been used over the centuries to accomplish useful tasks or simply just to entertain. The latter includes the automata, popular in Europe in the 17th and 18th centuries, featuring dancing figures that would repeat the same task over and over again; these automata are examples of open-loop control. Milestones among feedback, or "closed-loop" automatic control devices, include the temperature regulator of a furnace attributed to Drebbel, circa 1620, and the centrifugal flyball governor used for regulating the speed of steam engines by James Watt in 1788. In his 1868 paper "On Governors", James Clerk Maxwell was able to explain instabilities exhibited by the flyball governor using differential equations to describe the control system. This demonstrated the importance and usefulness of mathematical models and methods in understanding complex phenomena, and it signaled the beginning of mathematical control and systems theory. Elements of control theory had appeared earlier but not as dramatically and convincingly as in Maxwell's analysis. Control theory made significant strides over the next century. New mathematical techniques, as well as advances in electronic and computer technologies, made it possible to control significantly more complex dynamical systems than the original flyball governor could stabilize. New mathematical techniques included developments in optimal control in the 1950s and 1960s followed by progress in stochastic, robust, adaptive, nonlinear control methods in the 1970s and 1980s. Applications of control methodology have helped to make possible space travel and communication satellites, safer and more efficient aircraft, cleaner automobile engines, and cleaner and more efficient chemical processes. Before it emerged as a unique discipline, control engineering was practiced as a part of mechanical engineering and control theory was studied as a part of electrical engineering since electrical circuits can often be easily described using control theory techniques. In the very first control relationships, a current output was represented by a voltage control input. However, not having adequate technology to implement electrical control systems, designers were left with the option of less efficient and slow responding mechanical systems. A very effective mechanical controller that is still widely used in some hydro plants is the governor. Later on, previous to modern power electronics, process control systems for industrial applications were devised by mechanical engineers using pneumatic and hydraulic control devices, many of which are still in use today. A control system manages, commands, directs, or regulates the behavior of other devices or systems using control loops. It can range from a single home heating controller using a thermostat controlling a domestic boiler to large industrial control systems which are used for controlling processes or machines. The control systems are designed via control engineering process. For continuously modulated control, a feedback controller is used to automatically control a process or operation. The control system compares the value or status of the process variable (PV) being controlled with the desired value or setpoint (SP), and applies the difference as a control signal to bring the process variable output of the plant to the same value as the setpoint. Control theory is a field of control engineering and applied mathematics that deals with the control of dynamical systems in engineered processes and machines. The objective is to develop a model or algorithm governing the application of system inputs to drive the system to a desired state, while minimizing any delay, overshoot, or steady-state error and ensuring a level of control stability; often with the aim to achieve a degree of optimality. To do this, a controller with the requisite corrective behavior is required. This controller monitors the controlled process variable (PV), and compares it with the reference or set point (SP). The difference between actual and desired value of the process variable, called the error signal, or SP-PV error, is applied as feedback to generate a control action to bring the controlled process variable to the same value as the set point. Other aspects which are also studied are controllability and observability. Control theory is used in control system engineering to design automation that have revolutionized manufacturing, aircraft, communications and other industries, and created new fields such as robotics. Extensive use is usually made of a diagrammatic style known as the block diagram. In it the transfer function, also known as the system function or network function, is a mathematical model of the relation between the input and output based on the differential equations describing the system. Control theory dates from the 19th century, when the theoretical basis for the operation of governors was first described by James Clerk Maxwell. Control theory was further advanced by Edward Routh in 1874, Charles Sturm and in 1895, Adolf Hurwitz, who all contributed to the establishment of control stability criteria; and from 1922 onwards, the development of PID control theory by Nicolas Minorsky. At many universities around the world, control engineering courses are taught primarily in electrical engineering and mechanical engineering, but some courses can be instructed in mechatronics engineering, and aerospace engineering. In others, control engineering is connected to computer science, as most control techniques today are implemented through computers, often as embedded systems (as in the automotive field). The field of control within chemical engineering is often known as process control. It deals primarily with the control of variables in a chemical process in a plant. It is taught as part of the undergraduate curriculum of any chemical engineering program and employs many of the same principles in control engineering. Other engineering disciplines also overlap with control engineering as it can be applied to any system for which a suitable model can be derived. However, specialised control engineering departments do exist, for example, in Italy there are several master in Automation & Robotics that are fully specialised in Control engineering or the Department of Automatic Control and Systems Engineering at the University of Sheffield or the Department of Robotics and Control Engineering at the United States Naval Academy and the Department of Control and Automation Engineering at the Istanbul Technical University. Control engineering has diversified applications that include science, finance management, and even human behavior. Students of control engineering may start with a linear control system course dealing with the time and complex-s domain, which requires a thorough background in elementary mathematics and Laplace transform, called classical control theory. In linear control, the student does frequency and time domain analysis. Digital control and nonlinear control courses require Z transformation and algebra respectively, and could be said to complete a basic control education. A control engineer's career starts with a bachelor's degree and can continue through the college process. Control engineer degrees are well paired with an electrical or mechanical engineering degree. Control engineers usually get jobs in technical managing where they typically lead interdisciplinary projects. There are many job opportunities in aerospace companies, manufacturing companies, automobile companies, power companies, and government agencies. Some places that hire Control Engineers include companies such as Rockwell Automation, NASA, Ford, and Goodrich. Control Engineers can possibly earn $66k annually from Lockheed Martin Corp. They can also earn up to $96k annually from General Motors Corporation. According to a Control Engineering survey, most of the people who answered were control engineers in various forms of their own career. There are not very many careers that are classified as "control engineer", most of them are specific careers that have a small semblance to the overarching career of control engineering. A majority of the control engineers that took the survey in 2019 are system or product designers, or even control or instrument engineers. Most of the jobs involve process engineering or production or even maintenance, they are some variation of control engineering. Originally, control engineering was all about continuous systems. Development of computer control tools posed a requirement of discrete control system engineering because the communications between the computer-based digital controller and the physical system are governed by a computer clock. The equivalent to Laplace transform in the discrete domain is the Z-transform. Today, many of the control systems are computer controlled and they consist of both digital and analog components. Therefore, at the design stage either digital components are mapped into the continuous domain and the design is carried out in the continuous domain, or analog components are mapped into discrete domain and design is carried out there. The first of these two methods is more commonly encountered in practice because many industrial systems have many continuous systems components, including mechanical, fluid, biological and analog electrical components, with a few digital controllers. Similarly, the design technique has progressed from paper-and-ruler based manual design to computer-aided design and now to computer-automated design or CAD which has been made possible by evolutionary computation. CAD can be applied not just to tuning a predefined control scheme, but also to controller structure optimisation, system identification and invention of novel control systems, based purely upon a performance requirement, independent of any specific control scheme. Resilient control systems extend the traditional focus of addressing only planned disturbances to frameworks and attempt to address multiple types of unexpected disturbance; in particular, adapting and transforming behaviors of the control system in response to malicious actors, abnormal failure modes, undesirable human action, etc.	[ { "paragraph_id": 0, "text": "Control engineering or control systems engineering is an engineering discipline that deals with control systems, applying control theory to design equipment and systems with desired behaviors in control environments. The discipline of controls overlaps and is usually taught along with electrical engineering and mechanical engineering at many institutions around the world.", "title": "" }, { "paragraph_id": 1, "text": "The practice uses sensors and detectors to measure the output performance of the process being controlled; these measurements are used to provide corrective feedback helping to achieve the desired performance. Systems designed to perform without requiring human input are called automatic control systems (such as cruise control for regulating the speed of a car). Multi-disciplinary in nature, control systems engineering activities focus on implementation of control systems mainly derived by mathematical modeling of a diverse range of systems.", "title": "" }, { "paragraph_id": 2, "text": "Modern day control engineering is a relatively new field of study that gained significant attention during the 20th century with the advancement of technology. It can be broadly defined or classified as practical application of control theory. Control engineering plays an essential role in a wide range of control systems, from simple household washing machines to high-performance fighter aircraft. It seeks to understand physical systems, using mathematical modelling, in terms of inputs, outputs and various components with different behaviors; to use control system design tools to develop controllers for those systems; and to implement controllers in physical systems employing available technology. A system can be mechanical, electrical, fluid, chemical, financial or biological, and its mathematical modelling, analysis and controller design uses control theory in one or many of the time, frequency and complex-s domains, depending on the nature of the design problem.", "title": "Overview" }, { "paragraph_id": 3, "text": "Control engineering is the engineering discipline that focuses on the modeling of a diverse range of dynamic systems (e.g. mechanical systems) and the design of controllers that will cause these systems to behave in the desired manner. Although such controllers need not be electrical, many are and hence control engineering is often viewed as a subfield of electrical engineering.", "title": "Overview" }, { "paragraph_id": 4, "text": "Electrical circuits, digital signal processors and microcontrollers can all be used to implement control systems. Control engineering has a wide range of applications from the flight and propulsion systems of commercial airliners to the cruise control present in many modern automobiles.", "title": "Overview" }, { "paragraph_id": 5, "text": "In most cases, control engineers utilize feedback when designing control systems. This is often accomplished using a PID controller system. For example, in an automobile with cruise control the vehicle's speed is continuously monitored and fed back to the system, which adjusts the motor's torque accordingly. Where there is regular feedback, control theory can be used to determine how the system responds to such feedback. In practically all such systems stability is important and control theory can help ensure stability is achieved.", "title": "Overview" }, { "paragraph_id": 6, "text": "Although feedback is an important aspect of control engineering, control engineers may also work on the control of systems without feedback. This is known as open loop control. A classic example of open loop control is a washing machine that runs through a pre-determined cycle without the use of sensors.", "title": "Overview" }, { "paragraph_id": 7, "text": "Automatic control systems were first developed over two thousand years ago. The first feedback control device on record is thought to be the ancient Ktesibios's water clock in Alexandria, Egypt, around the third century BCE. It kept time by regulating the water level in a vessel and, therefore, the water flow from that vessel. This certainly was a successful device as water clocks of similar design were still being made in Baghdad when the Mongols captured the city in 1258 CE. A variety of automatic devices have been used over the centuries to accomplish useful tasks or simply just to entertain. The latter includes the automata, popular in Europe in the 17th and 18th centuries, featuring dancing figures that would repeat the same task over and over again; these automata are examples of open-loop control. Milestones among feedback, or \"closed-loop\" automatic control devices, include the temperature regulator of a furnace attributed to Drebbel, circa 1620, and the centrifugal flyball governor used for regulating the speed of steam engines by James Watt in 1788.", "title": "History" }, { "paragraph_id": 8, "text": "In his 1868 paper \"On Governors\", James Clerk Maxwell was able to explain instabilities exhibited by the flyball governor using differential equations to describe the control system. This demonstrated the importance and usefulness of mathematical models and methods in understanding complex phenomena, and it signaled the beginning of mathematical control and systems theory. Elements of control theory had appeared earlier but not as dramatically and convincingly as in Maxwell's analysis.", "title": "History" }, { "paragraph_id": 9, "text": "Control theory made significant strides over the next century. New mathematical techniques, as well as advances in electronic and computer technologies, made it possible to control significantly more complex dynamical systems than the original flyball governor could stabilize. New mathematical techniques included developments in optimal control in the 1950s and 1960s followed by progress in stochastic, robust, adaptive, nonlinear control methods in the 1970s and 1980s. Applications of control methodology have helped to make possible space travel and communication satellites, safer and more efficient aircraft, cleaner automobile engines, and cleaner and more efficient chemical processes.", "title": "History" }, { "paragraph_id": 10, "text": "Before it emerged as a unique discipline, control engineering was practiced as a part of mechanical engineering and control theory was studied as a part of electrical engineering since electrical circuits can often be easily described using control theory techniques. In the very first control relationships, a current output was represented by a voltage control input. However, not having adequate technology to implement electrical control systems, designers were left with the option of less efficient and slow responding mechanical systems. A very effective mechanical controller that is still widely used in some hydro plants is the governor. Later on, previous to modern power electronics, process control systems for industrial applications were devised by mechanical engineers using pneumatic and hydraulic control devices, many of which are still in use today.", "title": "History" }, { "paragraph_id": 11, "text": "A control system manages, commands, directs, or regulates the behavior of other devices or systems using control loops. It can range from a single home heating controller using a thermostat controlling a domestic boiler to large industrial control systems which are used for controlling processes or machines. The control systems are designed via control engineering process.", "title": "Control systems" }, { "paragraph_id": 12, "text": "For continuously modulated control, a feedback controller is used to automatically control a process or operation. The control system compares the value or status of the process variable (PV) being controlled with the desired value or setpoint (SP), and applies the difference as a control signal to bring the process variable output of the plant to the same value as the setpoint.", "title": "Control systems" }, { "paragraph_id": 13, "text": "Control theory is a field of control engineering and applied mathematics that deals with the control of dynamical systems in engineered processes and machines. The objective is to develop a model or algorithm governing the application of system inputs to drive the system to a desired state, while minimizing any delay, overshoot, or steady-state error and ensuring a level of control stability; often with the aim to achieve a degree of optimality.", "title": "Control theory" }, { "paragraph_id": 14, "text": "To do this, a controller with the requisite corrective behavior is required. This controller monitors the controlled process variable (PV), and compares it with the reference or set point (SP). The difference between actual and desired value of the process variable, called the error signal, or SP-PV error, is applied as feedback to generate a control action to bring the controlled process variable to the same value as the set point. Other aspects which are also studied are controllability and observability. Control theory is used in control system engineering to design automation that have revolutionized manufacturing, aircraft, communications and other industries, and created new fields such as robotics.", "title": "Control theory" }, { "paragraph_id": 15, "text": "Extensive use is usually made of a diagrammatic style known as the block diagram. In it the transfer function, also known as the system function or network function, is a mathematical model of the relation between the input and output based on the differential equations describing the system.", "title": "Control theory" }, { "paragraph_id": 16, "text": "Control theory dates from the 19th century, when the theoretical basis for the operation of governors was first described by James Clerk Maxwell. Control theory was further advanced by Edward Routh in 1874, Charles Sturm and in 1895, Adolf Hurwitz, who all contributed to the establishment of control stability criteria; and from 1922 onwards, the development of PID control theory by Nicolas Minorsky.", "title": "Control theory" }, { "paragraph_id": 17, "text": "At many universities around the world, control engineering courses are taught primarily in electrical engineering and mechanical engineering, but some courses can be instructed in mechatronics engineering, and aerospace engineering. In others, control engineering is connected to computer science, as most control techniques today are implemented through computers, often as embedded systems (as in the automotive field). The field of control within chemical engineering is often known as process control. It deals primarily with the control of variables in a chemical process in a plant. It is taught as part of the undergraduate curriculum of any chemical engineering program and employs many of the same principles in control engineering. Other engineering disciplines also overlap with control engineering as it can be applied to any system for which a suitable model can be derived. However, specialised control engineering departments do exist, for example, in Italy there are several master in Automation & Robotics that are fully specialised in Control engineering or the Department of Automatic Control and Systems Engineering at the University of Sheffield or the Department of Robotics and Control Engineering at the United States Naval Academy and the Department of Control and Automation Engineering at the Istanbul Technical University.", "title": "Education" }, { "paragraph_id": 18, "text": "Control engineering has diversified applications that include science, finance management, and even human behavior. Students of control engineering may start with a linear control system course dealing with the time and complex-s domain, which requires a thorough background in elementary mathematics and Laplace transform, called classical control theory. In linear control, the student does frequency and time domain analysis. Digital control and nonlinear control courses require Z transformation and algebra respectively, and could be said to complete a basic control education.", "title": "Education" }, { "paragraph_id": 19, "text": "A control engineer's career starts with a bachelor's degree and can continue through the college process. Control engineer degrees are well paired with an electrical or mechanical engineering degree. Control engineers usually get jobs in technical managing where they typically lead interdisciplinary projects. There are many job opportunities in aerospace companies, manufacturing companies, automobile companies, power companies, and government agencies. Some places that hire Control Engineers include companies such as Rockwell Automation, NASA, Ford, and Goodrich. Control Engineers can possibly earn $66k annually from Lockheed Martin Corp. They can also earn up to $96k annually from General Motors Corporation.", "title": "Careers" }, { "paragraph_id": 20, "text": "According to a Control Engineering survey, most of the people who answered were control engineers in various forms of their own career. There are not very many careers that are classified as \"control engineer\", most of them are specific careers that have a small semblance to the overarching career of control engineering. A majority of the control engineers that took the survey in 2019 are system or product designers, or even control or instrument engineers. Most of the jobs involve process engineering or production or even maintenance, they are some variation of control engineering.", "title": "Careers" }, { "paragraph_id": 21, "text": "Originally, control engineering was all about continuous systems. Development of computer control tools posed a requirement of discrete control system engineering because the communications between the computer-based digital controller and the physical system are governed by a computer clock. The equivalent to Laplace transform in the discrete domain is the Z-transform. Today, many of the control systems are computer controlled and they consist of both digital and analog components.", "title": "Recent advancement" }, { "paragraph_id": 22, "text": "Therefore, at the design stage either digital components are mapped into the continuous domain and the design is carried out in the continuous domain, or analog components are mapped into discrete domain and design is carried out there. The first of these two methods is more commonly encountered in practice because many industrial systems have many continuous systems components, including mechanical, fluid, biological and analog electrical components, with a few digital controllers.", "title": "Recent advancement" }, { "paragraph_id": 23, "text": "Similarly, the design technique has progressed from paper-and-ruler based manual design to computer-aided design and now to computer-automated design or CAD which has been made possible by evolutionary computation. CAD can be applied not just to tuning a predefined control scheme, but also to controller structure optimisation, system identification and invention of novel control systems, based purely upon a performance requirement, independent of any specific control scheme.", "title": "Recent advancement" }, { "paragraph_id": 24, "text": "Resilient control systems extend the traditional focus of addressing only planned disturbances to frameworks and attempt to address multiple types of unexpected disturbance; in particular, adapting and transforming behaviors of the control system in response to malicious actors, abnormal failure modes, undesirable human action, etc.", "title": "Recent advancement" } ]	Control engineering or control systems engineering is an engineering discipline that deals with control systems, applying control theory to design equipment and systems with desired behaviors in control environments. The discipline of controls overlaps and is usually taught along with electrical engineering and mechanical engineering at many institutions around the world. The practice uses sensors and detectors to measure the output performance of the process being controlled; these measurements are used to provide corrective feedback helping to achieve the desired performance. Systems designed to perform without requiring human input are called automatic control systems. Multi-disciplinary in nature, control systems engineering activities focus on implementation of control systems mainly derived by mathematical modeling of a diverse range of systems.	2001-11-05T18:08:55Z	2023-12-08T07:15:03Z	[ "Template:Reflist", "Template:Cite web", "Template:Wikibooks", "Template:Authority control", "Template:See also", "Template:Cite journal", "Template:Systems Engineering", "Template:Short description", "Template:More citations needed", "Template:Globalize", "Template:Cols", "Template:Engineering fields", "Template:Excerpt", "Template:Colend", "Template:Cite book", "Template:Commons category" ]	https://en.wikipedia.org/wiki/Control_engineering
7,012	Chagas disease	Chagas disease, also known as American trypanosomiasis, is a tropical parasitic disease caused by Trypanosoma cruzi. It is spread mostly by insects in the subfamily Triatominae, known as "kissing bugs". The symptoms change over the course of the infection. In the early stage, symptoms are typically either not present or mild, and may include fever, swollen lymph nodes, headaches, or swelling at the site of the bite. After four to eight weeks, untreated individuals enter the chronic phase of disease, which in most cases does not result in further symptoms. Up to 45% of people with chronic infections develop heart disease 10–30 years after the initial illness, which can lead to heart failure. Digestive complications, including an enlarged esophagus or an enlarged colon, may also occur in up to 21% of people, and up to 10% of people may experience nerve damage. T. cruzi is commonly spread to humans and other mammals by the kissing bug's bite wound and infected feces. The disease may also be spread through blood transfusion, organ transplantation, consuming food or drink contaminated with the parasites, and vertical transmission (from a mother to her baby). Diagnosis of early disease is by finding the parasite in the blood using a microscope or detecting its DNA by polymerase chain reaction. Chronic disease is diagnosed by finding antibodies for T. cruzi in the blood. Prevention focuses on eliminating kissing bugs and avoiding their bites. This may involve the use of insecticides or bed-nets. Other preventive efforts include screening blood used for transfusions. Early infections are treatable with the medications benznidazole or nifurtimox, which usually cure the disease if given shortly after the person is infected, but become less effective the longer a person has had Chagas disease. When used in chronic disease, medication may delay or prevent the development of end-stage symptoms. Benznidazole and nifurtimox often cause side effects, including skin disorders, digestive system irritation, and neurological symptoms, which can result in treatment being discontinued. New drugs for Chagas disease are under development, and while experimental vaccines have been studied in animal models, a human vaccine has not been developed. It is estimated that 6.5 million people, mostly in Mexico, Central America and South America, have Chagas disease as of 2019, resulting in approximately 9,490 annual deaths. Most people with the disease are poor, and most do not realize they are infected. Large-scale population migrations have carried Chagas disease to new regions, which include the United States and many European countries. The disease affects more than 150 types of animals. The disease was first described in 1909 by Brazilian physician Carlos Chagas, after whom it is named. Chagas disease is classified as a neglected tropical disease. Chagas disease occurs in two stages: an acute stage, which develops one to two weeks after the insect bite, and a chronic stage, which develops over many years. The acute stage is often symptom-free. When present, the symptoms are typically minor and not specific to any particular disease. Signs and symptoms include fever, malaise, headache, and enlargement of the liver, spleen, and lymph nodes. Sometimes, people develop a swollen nodule at the site of infection, which is called "Romaña's sign" if it is on the eyelid, or a "chagoma" if it is elsewhere on the skin. In rare cases (less than 1–5%), infected individuals develop severe acute disease, which can involve inflammation of the heart muscle, fluid accumulation around the heart, and inflammation of the brain and surrounding tissues, and may be life-threatening. The acute phase typically lasts four to eight weeks and resolves without treatment. Unless treated with antiparasitic drugs, individuals remain infected with T. cruzi after recovering from the acute phase. Most chronic infections are asymptomatic, which is referred to as indeterminate chronic Chagas disease. However, over decades with the disease, approximately 30–40% of people develop organ dysfunction (determinate chronic Chagas disease), which most often affects the heart or digestive system. The most common long-term manifestation is heart disease, which occurs in 14–45% of people with chronic Chagas disease. People with Chagas heart disease often experience heart palpitations, and sometimes fainting, due to irregular heart function. By electrocardiogram, people with Chagas heart disease most frequently have arrhythmias. As the disease progresses, the heart's ventricles become enlarged (dilated cardiomyopathy), which reduces its ability to pump blood. In many cases the first sign of Chagas heart disease is heart failure, thromboembolism, or chest pain associated with abnormalities in the microvasculature. Also common in chronic Chagas disease is damage to the digestive system, which affects 10–21% of people. Enlargement of the esophagus or colon are the most common digestive issues. Those with enlarged esophagus often experience pain (odynophagia) or trouble swallowing (dysphagia), acid reflux, cough, and weight loss. Individuals with enlarged colon often experience constipation, and may develop severe blockage of the intestine or its blood supply. Up to 10% of chronically infected individuals develop nerve damage that can result in numbness and altered reflexes or movement. While chronic disease typically develops over decades, some individuals with Chagas disease (less than 10%) progress to heart damage directly after acute disease. Signs and symptoms differ for people infected with T. cruzi through less common routes. People infected through ingestion of parasites tend to develop severe disease within three weeks of consumption, with symptoms including fever, vomiting, shortness of breath, cough, and pain in the chest, abdomen, and muscles. Those infected congenitally typically have few to no symptoms, but can have mild non-specific symptoms, or severe symptoms such as jaundice, respiratory distress, and heart problems. People infected through organ transplant or blood transfusion tend to have symptoms similar to those of vector-borne disease, but the symptoms may not manifest for anywhere from a week to five months. Chronically infected individuals who become immunosuppressed due to HIV infection can have particularly severe and distinct disease, most commonly characterized by inflammation in the brain and surrounding tissue or brain abscesses. Symptoms vary widely based on the size and location of brain abscesses, but typically include fever, headaches, seizures, loss of sensation, or other neurological issues that indicate particular sites of nervous system damage. Occasionally, these individuals also experience acute heart inflammation, skin lesions, and disease of the stomach, intestine, or peritoneum. Chagas disease is caused by infection with the protozoan parasite T. cruzi, which is typically introduced into humans through the bite of triatomine bugs, also called "kissing bugs". When the insect defecates at the bite site, motile T. cruzi forms called trypomastigotes enter the bloodstream and invade various host cells. Inside a host cell, the parasite transforms into a replicative form called an amastigote, which undergoes several rounds of replication. The replicated amastigotes transform back into trypomastigotes, which burst the host cell and are released into the bloodstream. Trypomastigotes then disseminate throughout the body to various tissues, where they invade cells and replicate. Over many years, cycles of parasite replication and immune response can severely damage these tissues, particularly the heart and digestive tract. T. cruzi can be transmitted by various triatomine bugs in the genera Triatoma, Panstrongylus, and Rhodnius. The primary vectors for human infection are the species of triatomine bugs that inhabit human dwellings, namely Triatoma infestans, Rhodnius prolixus, Triatoma dimidiata and Panstrongylus megistus. These insects are known by a number of local names, including vinchuca in Argentina, Bolivia, Chile and Paraguay, barbeiro (the barber) in Brazil, pito in Colombia, chinche in Central America, and chipo in Venezuela. The bugs tend to feed at night, preferring moist surfaces near the eyes or mouth. A triatomine bug can become infected with T. cruzi when it feeds on an infected host. T. cruzi replicates in the insect's intestinal tract and is shed in the bug's feces. When an infected triatomine feeds, it pierces the skin and takes in a blood meal, defecating at the same time to make room for the new meal. The bite is typically painless, but causes itching. Scratching at the bite introduces the T. cruzi-laden feces into the bite wound, initiating infection. In addition to classical vector spread, Chagas disease can be transmitted through consumption of food or drink contaminated with triatomine insects or their feces. Since heating or drying kills the parasites, drinks and especially fruit juices are the most frequent source of infection. This oral route of transmission has been implicated in several outbreaks, where it led to unusually severe symptoms, likely due to infection with a higher parasite load than from the bite of a triatomine bug. T. cruzi can be transmitted independent of the triatomine bug during blood transfusion, following organ transplantation, or across the placenta during pregnancy. Transfusion with the blood of an infected donor infects the recipient 10–25% of the time. To prevent this, blood donations are screened for T. cruzi in many countries with endemic Chagas disease, as well as the United States. Similarly, transplantation of solid organs from an infected donor can transmit T. cruzi to the recipient. This is especially true for heart transplant, which transmits T. cruzi 75–100% of the time, and less so for transplantation of the liver (0–29%) or a kidney (0–19%). An infected mother can pass T. cruzi to her child through the placenta; this occurs in up to 15% of births by infected mothers. As of 2019, 22.5% of new infections occurred through congenital transmission. In the acute phase of the disease, signs and symptoms are caused directly by the replication of T. cruzi and the immune system's response to it. During this phase, T. cruzi can be found in various tissues throughout the body and circulating in the blood. During the initial weeks of infection, parasite replication is brought under control by production of antibodies and activation of the host's inflammatory response, particularly cells that target intracellular pathogens such as NK cells and macrophages, driven by inflammation-signaling molecules like TNF-α and IFN-γ. During chronic Chagas disease, long-term organ damage develops over years due to continued replication of the parasite and damage from the immune system. Early in the course of the disease, T. cruzi is found frequently in the striated muscle fibers of the heart. As disease progresses, the heart becomes generally enlarged, with substantial regions of cardiac muscle fiber replaced by scar tissue and fat. Areas of active inflammation are scattered throughout the heart, with each housing inflammatory immune cells, typically macrophages and T cells. Late in the disease, parasites are rarely detected in the heart, and may be present at only very low levels. In the heart, colon, and esophagus, chronic disease leads to a massive loss of nerve endings. In the heart, this may contribute to arrythmias and other cardiac dysfunction. In the colon and esophagus, loss of nervous system control is the major driver of organ dysfunction. Loss of nerves impairs the movement of food through the digestive tract, which can lead to blockage of the esophagus or colon and restriction of their blood supply. The presence of T. cruzi in the blood is diagnostic of Chagas disease. During the acute phase of infection, it can be detected by microscopic examination of fresh anticoagulated blood, or its buffy coat, for motile parasites; or by preparation of thin and thick blood smears stained with Giemsa, for direct visualization of parasites. Blood smear examination detects parasites in 34–85% of cases. The sensitivity increases if techniques such as microhematocrit centrifugation are used to concentrate the blood. On microscopic examination of stained blood smears, T. cruzi trypomastigotes appear as S or U-shaped organisms with a flagellum connected to the body by an undulating membrane. A nucleus and a smaller structure called a kinetoplast are visible inside the parasite's body; the kinetoplast of T. cruzi is relatively large, which helps to distinguish it from other species of trypanosomes that infect humans. Alternatively, T. cruzi DNA can be detected by polymerase chain reaction (PCR). In acute and congenital Chagas disease, PCR is more sensitive than microscopy, and it is more reliable than antibody-based tests for the diagnosis of congenital disease because it is not affected by transfer of antibodies against T. cruzi from a mother to her baby (passive immunity). PCR is also used to monitor T. cruzi levels in organ transplant recipients and immunosuppressed people, which allows infection or reactivation to be detected at an early stage. In chronic Chagas disease, the concentration of parasites in the blood is too low to be reliably detected by microscopy or PCR, so the diagnosis is usually made using serological tests, which detect immunoglobulin G antibodies against T. cruzi in the blood. Two positive serology results, using different test methods, are required to confirm the diagnosis. If the test results are inconclusive, additional testing methods such as Western blot can be used. Various rapid diagnostic tests for Chagas disease are available. These tests are easily transported and can be performed by people without special training. They are useful for screening large numbers of people and testing people who cannot access healthcare facilities, but their sensitivity is relatively low, and it is recommended that a second method is used to confirm a positive result. T. cruzi parasites can be grown from blood samples by blood culture, xenodiagnosis, or by inoculating animals with the person's blood. In the blood culture method, the person's red blood cells are separated from the plasma and added to a specialized growth medium to encourage multiplication of the parasite. It can take up to six months to obtain the result. Xenodiagnosis involves feeding the blood to triatomine insects, then examining their feces for the parasite 30 to 60 days later. These methods are not routinely used, as they are slow and have low sensitivity. Efforts to prevent Chagas disease have largely focused on vector control to limit exposure to triatomine bugs. Insecticide-spraying programs have been the mainstay of vector control, consisting of spraying homes and the surrounding areas with residual insecticides. This was originally done with organochlorine, organophosphate, and carbamate insecticides, which were supplanted in the 1980s with pyrethroids. These programs have drastically reduced transmission in Brazil and Chile, and eliminated major vectors from certain regions: Triatoma infestans from Brazil, Chile, Uruguay, and parts of Peru and Paraguay, as well as Rhodnius prolixus from Central America. Vector control in some regions has been hindered by the development of insecticide resistance among triatomine bugs. In response, vector control programs have implemented alternative insecticides (e.g. fenitrothion and bendiocarb in Argentina and Bolivia), treatment of domesticated animals (which are also fed on by triatomine bugs) with pesticides, pesticide-impregnated paints, and other experimental approaches. In areas with triatomine bugs, transmission of T. cruzi can be prevented by sleeping under bed nets and by housing improvements that prevent triatomine bugs from colonizing houses. Blood transfusion was formerly the second-most common mode of transmission for Chagas disease. T. cruzi can survive in refrigerated stored blood, and can survive freezing and thawing, allowing it to persist in whole blood, packed red blood cells, granulocytes, cryoprecipitate, and platelets. The development and implementation of blood bank screening tests has dramatically reduced the risk of infection during blood transfusion. Nearly all blood donations in Latin American countries undergo Chagas screening. Widespread screening is also common in non-endemic nations with significant populations of immigrants from endemic areas, including the United Kingdom (implemented in 1999), Spain (2005), the United States (2007), France and Sweden (2009), Switzerland (2012), and Belgium (2013). Serological tests, typically ELISAs, are used to detect antibodies against T. cruzi proteins in donor blood. Other modes of transmission have been targeted by Chagas disease prevention programs. Treating T. cruzi-infected mothers during pregnancy reduces the risk of congenital transmission of the infection. To this end, many countries in Latin America have implemented routine screening of pregnant women and infants for T. cruzi infection, and the World Health Organization recommends screening all children born to infected mothers to prevent congenital infection from developing into chronic disease. Similarly to blood transfusions, many countries with endemic Chagas disease screen organs for transplantation with serological tests. There is no vaccine against Chagas disease. Several experimental vaccines have been tested in animals infected with T. cruzi and were able to reduce parasite numbers in the blood and heart, but no vaccine candidates had undergone clinical trials in humans as of 2016. Chagas disease is managed using antiparasitic drugs to eliminate T. cruzi from the body, and symptomatic treatment to address the effects of the infection. As of 2018, benznidazole and nifurtimox were the antiparasitic drugs of choice for treating Chagas disease, though benznidazole is the only drug available in most of Latin America. For either drug, treatment typically consists of two to three oral doses per day for 60 to 90 days. Antiparasitic treatment is most effective early in the course of infection: it eliminates T. cruzi from 50 to 80% of people in the acute phase (WHO: "nearly 100 %"), but only 20–60% of those in the chronic phase. Treatment of chronic disease is more effective in children than in adults, and the cure rate for congenital disease approaches 100% if treated in the first year of life. Antiparasitic treatment can also slow the progression of the disease and reduce the possibility of congenital transmission. Elimination of T. cruzi does not cure the cardiac and gastrointestinal damage caused by chronic Chagas disease, so these conditions must be treated separately. Antiparasitic treatment is not recommended for people who have already developed dilated cardiomyopathy. Benznidazole is usually considered the first-line treatment because it has milder adverse effects than nifurtimox, and its efficacy is better understood. Both benznidazole and nifurtimox have common side effects that can result in treatment being discontinued. The most common side effects of benznidazole are skin rash, digestive problems, decreased appetite, weakness, headache, and sleeping problems. These side effects can sometimes be treated with antihistamines or corticosteroids, and are generally reversed when treatment is stopped. However, benznidazole is discontinued in up to 29% of cases. Nifurtimox has more frequent side effects, affecting up to 97.5% of individuals taking the drug. The most common side effects are loss of appetite, weight loss, nausea and vomiting, and various neurological disorders including mood changes, insomnia, paresthesia and peripheral neuropathy. Treatment is discontinued in up to 75% of cases. Both drugs are contraindicated for use in pregnant women and people with liver or kidney failure. As of 2019, resistance to these drugs has been reported. In the chronic stage, treatment involves managing the clinical manifestations of the disease. The treatment of Chagas cardiomyopathy is similar to that of other forms of heart disease. Beta blockers and ACE inhibitors may be prescribed, but some people with Chagas disease may not be able to take the standard dose of these drugs because they have low blood pressure or a low heart rate. To manage irregular heartbeats, people may be prescribed anti-arrhythmic drugs such as amiodarone, or have a pacemaker implanted. Blood thinners may be used to prevent thromboembolism and stroke. Chronic heart disease caused by Chagas is a common reason for heart transplantation surgery. Because transplant recipients take immunosuppressive drugs to prevent organ rejection, they are monitored using PCR to detect reactivation of the disease. People with Chagas disease who undergo heart transplantation have higher survival rates than the average heart transplant recipient. Mild gastrointestinal disease may be treated symptomatically, such as by using laxatives for constipation, or taking a prokinetic drug like metoclopramide before meals to relieve esophageal symptoms. Surgery to sever the muscles of the lower esophageal sphincter (cardiomyotomy) may be performed in more severe cases of esophageal disease, and surgical removal of the affected part of the organ may be required for advanced megacolon and megaesophagus. In 2019, an estimated 6.5 million people worldwide had Chagas disease, with approximately 173,000 new infections and 9,490 deaths each year. The disease resulted in a global annual economic burden estimated at US$7.2 billion in 2013, 86% of which is borne by endemic countries. Chagas disease results in the loss of over 800,000 disability-adjusted life years each year. The endemic area of Chagas disease stretches from the southern United States to northern Chile and Argentina, with Bolivia (6.1%), Argentina (3.6%), and Paraguay (2.1%) exhibiting the highest prevalence of the disease. Within continental Latin America, Chagas disease is endemic to 21 countries: Argentina, Belize, Bolivia, Brazil, Chile, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Suriname, Uruguay, and Venezuela. In endemic areas, due largely to vector control efforts and screening of blood donations, annual infections and deaths have fallen by 67% and more than 73% respectively from their peaks in the 1980s to 2010. Transmission by insect vector and blood transfusion has been completely interrupted in Uruguay (1997), Chile (1999), and Brazil (2006), and in Argentina, vectorial transmission had been interrupted in 13 of the 19 endemic provinces as of 2001. During Venezuela's humanitarian crisis, vectorial transmission has begun occurring in areas where it had previously been interrupted, and Chagas disease seroprevalence rates have increased. Transmission rates have also risen in the Gran Chaco region due to insecticide resistance and in the Amazon basin due to oral transmission. While the rate of vector-transmitted Chagas disease has declined throughout most of Latin America, the rate of orally transmitted disease has risen, possibly due to increasing urbanization and deforestation bringing people into closer contact with triatomines and altering the distribution of triatomine species. Orally transmitted Chagas disease is of particular concern in Venezuela, where 16 outbreaks have been recorded between 2007 and 2018. Chagas exists in two different ecological zones: In the Southern Cone region, the main vector lives in and around human homes. In Central America and Mexico, the main vector species lives both inside dwellings and in uninhabited areas. In both zones, Chagas occurs almost exclusively in rural areas, where T. cruzi also circulates in wild and domestic animals. T. cruzi commonly infects more than 100 species of mammals across Latin America including opossums (Didelphis spp.), armadillos, marmosets, bats, various rodents and dogs all of which can be infected by the vectors or orally by eating triatomine bugs and other infected animals. For entomophagous animals this is a common mode. Didelphis spp. are unique in that they do not require the triatomine for transmission, completing the life cycle through their own urine and feces. Veterinary transmission also occurs through vertical transmission through the placenta, blood transfusion and organ transplants. Though Chagas is traditionally considered a disease of rural Latin America, international migration has dispersed those with the disease to numerous non-endemic countries, primarily in North America and Europe. As of 2020, approximately 300,000 infected people are living in the United States, and in 2018 it was estimated that 30,000 to 40,000 Americans had Chagas cardiomyopathy. The vast majority of cases in the United States occur in immigrants from Latin America, but local transmission is possible. Eleven triatomine species are native to the United States, and some southern states have persistent cycles of disease transmission between insect vectors and animal reservoirs, which include woodrats, possums, raccoons, armadillos and skunks. However, locally acquired infection is very rare: only 28 cases were documented from 1955 to 2015. As of 2013, the cost of treatment in the United States was estimated to be US$900 million annually (global cost $7 billion), which included hospitalization and medical devices such as pacemakers. Chagas disease affects approximately 68,000 to 123,000 people in Europe as of 2019. Spain, which has a high rate of immigration from Latin America, has the highest prevalence of the disease. It is estimated that 50,000 to 70,000 Spanish people are living with Chagas disease, accounting for the majority of European cases. The prevalence varies widely within European countries due to differing immigration patterns. Italy has the second highest prevalence, followed by the Netherlands, the United Kingdom, and Germany. T. cruzi likely circulated in South American mammals long before the arrival of humans on the continent. T. cruzi has been detected in ancient human remains across South America, from a 9000-year-old Chinchorro mummy in the Atacama Desert, to remains of various ages in Minas Gerais, to an 1100-year-old mummy as far north as the Chihuahuan Desert near the Rio Grande. Many early written accounts describe symptoms consistent with Chagas disease, with early descriptions of the disease sometimes attributed to Miguel Diaz Pimenta (1707), Luís Gomes Ferreira [pt] (1735), and Theodoro J. H. Langgaard (1842). The formal description of Chagas disease was made by Carlos Chagas in 1909 after examining a two-year-old girl with fever, swollen lymph nodes, and an enlarged spleen and liver. Upon examination of her blood, Chagas saw trypanosomes identical to those he had recently identified from the hindgut of triatomine bugs and named Trypanosoma cruzi in honor of his mentor, Brazilian physician Oswaldo Cruz. He sent infected triatomine bugs to Cruz in Rio de Janeiro, who showed the bite of the infected triatomine could transmit T. cruzi to marmoset monkeys as well. In just two years, 1908 and 1909, Chagas published descriptions of the disease, the organism that caused it, and the insect vector required for infection. Almost immediately thereafter, at the suggestion of Miguel Couto, then professor of the Faculdade de Medicina do Rio de Janeiro [pt], the disease was widely referred to as "Chagas disease". Chagas' discovery brought him national and international renown, but in highlighting the inadequacies of the Brazilian government's response to the disease, Chagas attracted criticism to himself and to the disease that bore his name, stifling research on his discovery and likely frustrating his nomination for the Nobel Prize in 1921. In the 1930s, Salvador Mazza rekindled Chagas disease research, describing over a thousand cases in Argentina's Chaco Province. In Argentina, the disease is known as mal de Chagas-Mazza in his honor. Serological tests for Chagas disease were introduced in the 1940s, demonstrating that infection with T. cruzi was widespread across Latin America. This, combined with successes eliminating the malaria vector through insecticide use, spurred the creation of public health campaigns focused on treating houses with insecticides to eradicate triatomine bugs. The 1950s saw the discovery that treating blood with crystal violet could eradicate the parasite, leading to its widespread use in transfusion screening programs in Latin America. Large-scale control programs began to take form in the 1960s, first in São Paulo, then various locations in Argentina, then national-level programs across Latin America. These programs received a major boost in the 1980s with the introduction of pyrethroid insecticides, which did not leave stains or odors after application and were longer-lasting and more cost-effective. Regional bodies dedicated to controlling Chagas disease arose through support of the Pan American Health Organization, with the Initiative of the Southern Cone for the Elimination of Chagas Diseases launching in 1991, followed by the Initiative of the Andean countries (1997), Initiative of the Central American countries (1997), and the Initiative of the Amazon countries (2004). Fexinidazole, an antiparasitic drug approved for treating African trypanosomiasis, has shown activity against Chagas disease in animal models. As of 2019, it is undergoing phase II clinical trials for chronic Chagas disease in Spain. Other drug candidates include GNF6702, a proteasome inhibitor that is effective against Chagas disease in mice and is undergoing preliminary toxicity studies, and AN4169, which has had promising results in animal models. A number of experimental vaccines have been tested in animals. In addition to subunit vaccines, some approaches have involved vaccination with attenuated T. cruzi parasites or organisms that express some of the same antigens as T. cruzi but do not cause human disease, such as Trypanosoma rangeli or Phytomonas serpens. DNA vaccination has also been explored. As of 2019, vaccine research has mainly been limited to small animal models. As of 2018, standard diagnostic tests for Chagas disease were limited in their ability to measure the effectiveness of antiparasitic treatment, as serological tests may remain positive for years after T. cruzi is eliminated from the body, and PCR may give false-negative results when the parasite concentration in the blood is low. Several potential biomarkers of treatment response are under investigation, such as immunoassays against specific T. cruzi antigens, flow cytometry testing to detect antibodies against different life stages of T. cruzi, and markers of physiological changes caused by the parasite, such as alterations in coagulation and lipid metabolism. Another research area is the use of biomarkers to predict the progression of chronic disease. Serum levels of tumor necrosis factor alpha, brain and atrial natriuretic peptide, and angiotensin-converting enzyme 2 have been studied as indicators of the prognosis of Chagas cardiomyopathy. T. cruzi shed acute-phase antigen (SAPA), which can be detected in blood using ELISA or Western blot, has been used as an indicator of early acute and congenital infection. An assay for T. cruzi antigens in urine has been developed to diagnose congenital disease.	[ { "paragraph_id": 0, "text": "Chagas disease, also known as American trypanosomiasis, is a tropical parasitic disease caused by Trypanosoma cruzi. It is spread mostly by insects in the subfamily Triatominae, known as \"kissing bugs\". The symptoms change over the course of the infection. In the early stage, symptoms are typically either not present or mild, and may include fever, swollen lymph nodes, headaches, or swelling at the site of the bite. After four to eight weeks, untreated individuals enter the chronic phase of disease, which in most cases does not result in further symptoms. Up to 45% of people with chronic infections develop heart disease 10–30 years after the initial illness, which can lead to heart failure. Digestive complications, including an enlarged esophagus or an enlarged colon, may also occur in up to 21% of people, and up to 10% of people may experience nerve damage.", "title": "" }, { "paragraph_id": 1, "text": "T. cruzi is commonly spread to humans and other mammals by the kissing bug's bite wound and infected feces. The disease may also be spread through blood transfusion, organ transplantation, consuming food or drink contaminated with the parasites, and vertical transmission (from a mother to her baby). Diagnosis of early disease is by finding the parasite in the blood using a microscope or detecting its DNA by polymerase chain reaction. Chronic disease is diagnosed by finding antibodies for T. cruzi in the blood.", "title": "" }, { "paragraph_id": 2, "text": "Prevention focuses on eliminating kissing bugs and avoiding their bites. This may involve the use of insecticides or bed-nets. Other preventive efforts include screening blood used for transfusions. Early infections are treatable with the medications benznidazole or nifurtimox, which usually cure the disease if given shortly after the person is infected, but become less effective the longer a person has had Chagas disease. When used in chronic disease, medication may delay or prevent the development of end-stage symptoms. Benznidazole and nifurtimox often cause side effects, including skin disorders, digestive system irritation, and neurological symptoms, which can result in treatment being discontinued. New drugs for Chagas disease are under development, and while experimental vaccines have been studied in animal models, a human vaccine has not been developed.", "title": "" }, { "paragraph_id": 3, "text": "It is estimated that 6.5 million people, mostly in Mexico, Central America and South America, have Chagas disease as of 2019, resulting in approximately 9,490 annual deaths. Most people with the disease are poor, and most do not realize they are infected. Large-scale population migrations have carried Chagas disease to new regions, which include the United States and many European countries. The disease affects more than 150 types of animals.", "title": "" }, { "paragraph_id": 4, "text": "The disease was first described in 1909 by Brazilian physician Carlos Chagas, after whom it is named. Chagas disease is classified as a neglected tropical disease.", "title": "" }, { "paragraph_id": 5, "text": "Chagas disease occurs in two stages: an acute stage, which develops one to two weeks after the insect bite, and a chronic stage, which develops over many years. The acute stage is often symptom-free. When present, the symptoms are typically minor and not specific to any particular disease. Signs and symptoms include fever, malaise, headache, and enlargement of the liver, spleen, and lymph nodes. Sometimes, people develop a swollen nodule at the site of infection, which is called \"Romaña's sign\" if it is on the eyelid, or a \"chagoma\" if it is elsewhere on the skin. In rare cases (less than 1–5%), infected individuals develop severe acute disease, which can involve inflammation of the heart muscle, fluid accumulation around the heart, and inflammation of the brain and surrounding tissues, and may be life-threatening. The acute phase typically lasts four to eight weeks and resolves without treatment.", "title": "Signs and symptoms" }, { "paragraph_id": 6, "text": "Unless treated with antiparasitic drugs, individuals remain infected with T. cruzi after recovering from the acute phase. Most chronic infections are asymptomatic, which is referred to as indeterminate chronic Chagas disease. However, over decades with the disease, approximately 30–40% of people develop organ dysfunction (determinate chronic Chagas disease), which most often affects the heart or digestive system.", "title": "Signs and symptoms" }, { "paragraph_id": 7, "text": "The most common long-term manifestation is heart disease, which occurs in 14–45% of people with chronic Chagas disease. People with Chagas heart disease often experience heart palpitations, and sometimes fainting, due to irregular heart function. By electrocardiogram, people with Chagas heart disease most frequently have arrhythmias. As the disease progresses, the heart's ventricles become enlarged (dilated cardiomyopathy), which reduces its ability to pump blood. In many cases the first sign of Chagas heart disease is heart failure, thromboembolism, or chest pain associated with abnormalities in the microvasculature.", "title": "Signs and symptoms" }, { "paragraph_id": 8, "text": "Also common in chronic Chagas disease is damage to the digestive system, which affects 10–21% of people. Enlargement of the esophagus or colon are the most common digestive issues. Those with enlarged esophagus often experience pain (odynophagia) or trouble swallowing (dysphagia), acid reflux, cough, and weight loss. Individuals with enlarged colon often experience constipation, and may develop severe blockage of the intestine or its blood supply. Up to 10% of chronically infected individuals develop nerve damage that can result in numbness and altered reflexes or movement. While chronic disease typically develops over decades, some individuals with Chagas disease (less than 10%) progress to heart damage directly after acute disease.", "title": "Signs and symptoms" }, { "paragraph_id": 9, "text": "Signs and symptoms differ for people infected with T. cruzi through less common routes. People infected through ingestion of parasites tend to develop severe disease within three weeks of consumption, with symptoms including fever, vomiting, shortness of breath, cough, and pain in the chest, abdomen, and muscles. Those infected congenitally typically have few to no symptoms, but can have mild non-specific symptoms, or severe symptoms such as jaundice, respiratory distress, and heart problems. People infected through organ transplant or blood transfusion tend to have symptoms similar to those of vector-borne disease, but the symptoms may not manifest for anywhere from a week to five months. Chronically infected individuals who become immunosuppressed due to HIV infection can have particularly severe and distinct disease, most commonly characterized by inflammation in the brain and surrounding tissue or brain abscesses. Symptoms vary widely based on the size and location of brain abscesses, but typically include fever, headaches, seizures, loss of sensation, or other neurological issues that indicate particular sites of nervous system damage. Occasionally, these individuals also experience acute heart inflammation, skin lesions, and disease of the stomach, intestine, or peritoneum.", "title": "Signs and symptoms" }, { "paragraph_id": 10, "text": "Chagas disease is caused by infection with the protozoan parasite T. cruzi, which is typically introduced into humans through the bite of triatomine bugs, also called \"kissing bugs\". When the insect defecates at the bite site, motile T. cruzi forms called trypomastigotes enter the bloodstream and invade various host cells. Inside a host cell, the parasite transforms into a replicative form called an amastigote, which undergoes several rounds of replication. The replicated amastigotes transform back into trypomastigotes, which burst the host cell and are released into the bloodstream. Trypomastigotes then disseminate throughout the body to various tissues, where they invade cells and replicate. Over many years, cycles of parasite replication and immune response can severely damage these tissues, particularly the heart and digestive tract.", "title": "Cause" }, { "paragraph_id": 11, "text": "T. cruzi can be transmitted by various triatomine bugs in the genera Triatoma, Panstrongylus, and Rhodnius. The primary vectors for human infection are the species of triatomine bugs that inhabit human dwellings, namely Triatoma infestans, Rhodnius prolixus, Triatoma dimidiata and Panstrongylus megistus. These insects are known by a number of local names, including vinchuca in Argentina, Bolivia, Chile and Paraguay, barbeiro (the barber) in Brazil, pito in Colombia, chinche in Central America, and chipo in Venezuela. The bugs tend to feed at night, preferring moist surfaces near the eyes or mouth. A triatomine bug can become infected with T. cruzi when it feeds on an infected host. T. cruzi replicates in the insect's intestinal tract and is shed in the bug's feces. When an infected triatomine feeds, it pierces the skin and takes in a blood meal, defecating at the same time to make room for the new meal. The bite is typically painless, but causes itching. Scratching at the bite introduces the T. cruzi-laden feces into the bite wound, initiating infection.", "title": "Cause" }, { "paragraph_id": 12, "text": "In addition to classical vector spread, Chagas disease can be transmitted through consumption of food or drink contaminated with triatomine insects or their feces. Since heating or drying kills the parasites, drinks and especially fruit juices are the most frequent source of infection. This oral route of transmission has been implicated in several outbreaks, where it led to unusually severe symptoms, likely due to infection with a higher parasite load than from the bite of a triatomine bug.", "title": "Cause" }, { "paragraph_id": 13, "text": "T. cruzi can be transmitted independent of the triatomine bug during blood transfusion, following organ transplantation, or across the placenta during pregnancy. Transfusion with the blood of an infected donor infects the recipient 10–25% of the time. To prevent this, blood donations are screened for T. cruzi in many countries with endemic Chagas disease, as well as the United States. Similarly, transplantation of solid organs from an infected donor can transmit T. cruzi to the recipient. This is especially true for heart transplant, which transmits T. cruzi 75–100% of the time, and less so for transplantation of the liver (0–29%) or a kidney (0–19%). An infected mother can pass T. cruzi to her child through the placenta; this occurs in up to 15% of births by infected mothers. As of 2019, 22.5% of new infections occurred through congenital transmission.", "title": "Cause" }, { "paragraph_id": 14, "text": "In the acute phase of the disease, signs and symptoms are caused directly by the replication of T. cruzi and the immune system's response to it. During this phase, T. cruzi can be found in various tissues throughout the body and circulating in the blood. During the initial weeks of infection, parasite replication is brought under control by production of antibodies and activation of the host's inflammatory response, particularly cells that target intracellular pathogens such as NK cells and macrophages, driven by inflammation-signaling molecules like TNF-α and IFN-γ.", "title": "Pathophysiology" }, { "paragraph_id": 15, "text": "During chronic Chagas disease, long-term organ damage develops over years due to continued replication of the parasite and damage from the immune system. Early in the course of the disease, T. cruzi is found frequently in the striated muscle fibers of the heart. As disease progresses, the heart becomes generally enlarged, with substantial regions of cardiac muscle fiber replaced by scar tissue and fat. Areas of active inflammation are scattered throughout the heart, with each housing inflammatory immune cells, typically macrophages and T cells. Late in the disease, parasites are rarely detected in the heart, and may be present at only very low levels.", "title": "Pathophysiology" }, { "paragraph_id": 16, "text": "In the heart, colon, and esophagus, chronic disease leads to a massive loss of nerve endings. In the heart, this may contribute to arrythmias and other cardiac dysfunction. In the colon and esophagus, loss of nervous system control is the major driver of organ dysfunction. Loss of nerves impairs the movement of food through the digestive tract, which can lead to blockage of the esophagus or colon and restriction of their blood supply.", "title": "Pathophysiology" }, { "paragraph_id": 17, "text": "The presence of T. cruzi in the blood is diagnostic of Chagas disease. During the acute phase of infection, it can be detected by microscopic examination of fresh anticoagulated blood, or its buffy coat, for motile parasites; or by preparation of thin and thick blood smears stained with Giemsa, for direct visualization of parasites. Blood smear examination detects parasites in 34–85% of cases. The sensitivity increases if techniques such as microhematocrit centrifugation are used to concentrate the blood. On microscopic examination of stained blood smears, T. cruzi trypomastigotes appear as S or U-shaped organisms with a flagellum connected to the body by an undulating membrane. A nucleus and a smaller structure called a kinetoplast are visible inside the parasite's body; the kinetoplast of T. cruzi is relatively large, which helps to distinguish it from other species of trypanosomes that infect humans.", "title": "Diagnosis" }, { "paragraph_id": 18, "text": "Alternatively, T. cruzi DNA can be detected by polymerase chain reaction (PCR). In acute and congenital Chagas disease, PCR is more sensitive than microscopy, and it is more reliable than antibody-based tests for the diagnosis of congenital disease because it is not affected by transfer of antibodies against T. cruzi from a mother to her baby (passive immunity). PCR is also used to monitor T. cruzi levels in organ transplant recipients and immunosuppressed people, which allows infection or reactivation to be detected at an early stage.", "title": "Diagnosis" }, { "paragraph_id": 19, "text": "In chronic Chagas disease, the concentration of parasites in the blood is too low to be reliably detected by microscopy or PCR, so the diagnosis is usually made using serological tests, which detect immunoglobulin G antibodies against T. cruzi in the blood. Two positive serology results, using different test methods, are required to confirm the diagnosis. If the test results are inconclusive, additional testing methods such as Western blot can be used.", "title": "Diagnosis" }, { "paragraph_id": 20, "text": "Various rapid diagnostic tests for Chagas disease are available. These tests are easily transported and can be performed by people without special training. They are useful for screening large numbers of people and testing people who cannot access healthcare facilities, but their sensitivity is relatively low, and it is recommended that a second method is used to confirm a positive result.", "title": "Diagnosis" }, { "paragraph_id": 21, "text": "T. cruzi parasites can be grown from blood samples by blood culture, xenodiagnosis, or by inoculating animals with the person's blood. In the blood culture method, the person's red blood cells are separated from the plasma and added to a specialized growth medium to encourage multiplication of the parasite. It can take up to six months to obtain the result. Xenodiagnosis involves feeding the blood to triatomine insects, then examining their feces for the parasite 30 to 60 days later. These methods are not routinely used, as they are slow and have low sensitivity.", "title": "Diagnosis" }, { "paragraph_id": 22, "text": "Efforts to prevent Chagas disease have largely focused on vector control to limit exposure to triatomine bugs. Insecticide-spraying programs have been the mainstay of vector control, consisting of spraying homes and the surrounding areas with residual insecticides. This was originally done with organochlorine, organophosphate, and carbamate insecticides, which were supplanted in the 1980s with pyrethroids. These programs have drastically reduced transmission in Brazil and Chile, and eliminated major vectors from certain regions: Triatoma infestans from Brazil, Chile, Uruguay, and parts of Peru and Paraguay, as well as Rhodnius prolixus from Central America. Vector control in some regions has been hindered by the development of insecticide resistance among triatomine bugs. In response, vector control programs have implemented alternative insecticides (e.g. fenitrothion and bendiocarb in Argentina and Bolivia), treatment of domesticated animals (which are also fed on by triatomine bugs) with pesticides, pesticide-impregnated paints, and other experimental approaches. In areas with triatomine bugs, transmission of T. cruzi can be prevented by sleeping under bed nets and by housing improvements that prevent triatomine bugs from colonizing houses.", "title": "Prevention" }, { "paragraph_id": 23, "text": "Blood transfusion was formerly the second-most common mode of transmission for Chagas disease. T. cruzi can survive in refrigerated stored blood, and can survive freezing and thawing, allowing it to persist in whole blood, packed red blood cells, granulocytes, cryoprecipitate, and platelets. The development and implementation of blood bank screening tests has dramatically reduced the risk of infection during blood transfusion. Nearly all blood donations in Latin American countries undergo Chagas screening. Widespread screening is also common in non-endemic nations with significant populations of immigrants from endemic areas, including the United Kingdom (implemented in 1999), Spain (2005), the United States (2007), France and Sweden (2009), Switzerland (2012), and Belgium (2013). Serological tests, typically ELISAs, are used to detect antibodies against T. cruzi proteins in donor blood.", "title": "Prevention" }, { "paragraph_id": 24, "text": "Other modes of transmission have been targeted by Chagas disease prevention programs. Treating T. cruzi-infected mothers during pregnancy reduces the risk of congenital transmission of the infection. To this end, many countries in Latin America have implemented routine screening of pregnant women and infants for T. cruzi infection, and the World Health Organization recommends screening all children born to infected mothers to prevent congenital infection from developing into chronic disease. Similarly to blood transfusions, many countries with endemic Chagas disease screen organs for transplantation with serological tests.", "title": "Prevention" }, { "paragraph_id": 25, "text": "There is no vaccine against Chagas disease. Several experimental vaccines have been tested in animals infected with T. cruzi and were able to reduce parasite numbers in the blood and heart, but no vaccine candidates had undergone clinical trials in humans as of 2016.", "title": "Prevention" }, { "paragraph_id": 26, "text": "Chagas disease is managed using antiparasitic drugs to eliminate T. cruzi from the body, and symptomatic treatment to address the effects of the infection. As of 2018, benznidazole and nifurtimox were the antiparasitic drugs of choice for treating Chagas disease, though benznidazole is the only drug available in most of Latin America. For either drug, treatment typically consists of two to three oral doses per day for 60 to 90 days. Antiparasitic treatment is most effective early in the course of infection: it eliminates T. cruzi from 50 to 80% of people in the acute phase (WHO: \"nearly 100 %\"), but only 20–60% of those in the chronic phase. Treatment of chronic disease is more effective in children than in adults, and the cure rate for congenital disease approaches 100% if treated in the first year of life. Antiparasitic treatment can also slow the progression of the disease and reduce the possibility of congenital transmission. Elimination of T. cruzi does not cure the cardiac and gastrointestinal damage caused by chronic Chagas disease, so these conditions must be treated separately. Antiparasitic treatment is not recommended for people who have already developed dilated cardiomyopathy.", "title": "Management" }, { "paragraph_id": 27, "text": "Benznidazole is usually considered the first-line treatment because it has milder adverse effects than nifurtimox, and its efficacy is better understood. Both benznidazole and nifurtimox have common side effects that can result in treatment being discontinued. The most common side effects of benznidazole are skin rash, digestive problems, decreased appetite, weakness, headache, and sleeping problems. These side effects can sometimes be treated with antihistamines or corticosteroids, and are generally reversed when treatment is stopped. However, benznidazole is discontinued in up to 29% of cases. Nifurtimox has more frequent side effects, affecting up to 97.5% of individuals taking the drug. The most common side effects are loss of appetite, weight loss, nausea and vomiting, and various neurological disorders including mood changes, insomnia, paresthesia and peripheral neuropathy. Treatment is discontinued in up to 75% of cases. Both drugs are contraindicated for use in pregnant women and people with liver or kidney failure. As of 2019, resistance to these drugs has been reported.", "title": "Management" }, { "paragraph_id": 28, "text": "In the chronic stage, treatment involves managing the clinical manifestations of the disease. The treatment of Chagas cardiomyopathy is similar to that of other forms of heart disease. Beta blockers and ACE inhibitors may be prescribed, but some people with Chagas disease may not be able to take the standard dose of these drugs because they have low blood pressure or a low heart rate. To manage irregular heartbeats, people may be prescribed anti-arrhythmic drugs such as amiodarone, or have a pacemaker implanted. Blood thinners may be used to prevent thromboembolism and stroke. Chronic heart disease caused by Chagas is a common reason for heart transplantation surgery. Because transplant recipients take immunosuppressive drugs to prevent organ rejection, they are monitored using PCR to detect reactivation of the disease. People with Chagas disease who undergo heart transplantation have higher survival rates than the average heart transplant recipient.", "title": "Management" }, { "paragraph_id": 29, "text": "Mild gastrointestinal disease may be treated symptomatically, such as by using laxatives for constipation, or taking a prokinetic drug like metoclopramide before meals to relieve esophageal symptoms. Surgery to sever the muscles of the lower esophageal sphincter (cardiomyotomy) may be performed in more severe cases of esophageal disease, and surgical removal of the affected part of the organ may be required for advanced megacolon and megaesophagus.", "title": "Management" }, { "paragraph_id": 30, "text": "In 2019, an estimated 6.5 million people worldwide had Chagas disease, with approximately 173,000 new infections and 9,490 deaths each year. The disease resulted in a global annual economic burden estimated at US$7.2 billion in 2013, 86% of which is borne by endemic countries. Chagas disease results in the loss of over 800,000 disability-adjusted life years each year.", "title": "Epidemiology" }, { "paragraph_id": 31, "text": "The endemic area of Chagas disease stretches from the southern United States to northern Chile and Argentina, with Bolivia (6.1%), Argentina (3.6%), and Paraguay (2.1%) exhibiting the highest prevalence of the disease. Within continental Latin America, Chagas disease is endemic to 21 countries: Argentina, Belize, Bolivia, Brazil, Chile, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Suriname, Uruguay, and Venezuela. In endemic areas, due largely to vector control efforts and screening of blood donations, annual infections and deaths have fallen by 67% and more than 73% respectively from their peaks in the 1980s to 2010. Transmission by insect vector and blood transfusion has been completely interrupted in Uruguay (1997), Chile (1999), and Brazil (2006), and in Argentina, vectorial transmission had been interrupted in 13 of the 19 endemic provinces as of 2001. During Venezuela's humanitarian crisis, vectorial transmission has begun occurring in areas where it had previously been interrupted, and Chagas disease seroprevalence rates have increased. Transmission rates have also risen in the Gran Chaco region due to insecticide resistance and in the Amazon basin due to oral transmission.", "title": "Epidemiology" }, { "paragraph_id": 32, "text": "While the rate of vector-transmitted Chagas disease has declined throughout most of Latin America, the rate of orally transmitted disease has risen, possibly due to increasing urbanization and deforestation bringing people into closer contact with triatomines and altering the distribution of triatomine species. Orally transmitted Chagas disease is of particular concern in Venezuela, where 16 outbreaks have been recorded between 2007 and 2018.", "title": "Epidemiology" }, { "paragraph_id": 33, "text": "Chagas exists in two different ecological zones: In the Southern Cone region, the main vector lives in and around human homes. In Central America and Mexico, the main vector species lives both inside dwellings and in uninhabited areas. In both zones, Chagas occurs almost exclusively in rural areas, where T. cruzi also circulates in wild and domestic animals. T. cruzi commonly infects more than 100 species of mammals across Latin America including opossums (Didelphis spp.), armadillos, marmosets, bats, various rodents and dogs all of which can be infected by the vectors or orally by eating triatomine bugs and other infected animals. For entomophagous animals this is a common mode. Didelphis spp. are unique in that they do not require the triatomine for transmission, completing the life cycle through their own urine and feces. Veterinary transmission also occurs through vertical transmission through the placenta, blood transfusion and organ transplants.", "title": "Epidemiology" }, { "paragraph_id": 34, "text": "Though Chagas is traditionally considered a disease of rural Latin America, international migration has dispersed those with the disease to numerous non-endemic countries, primarily in North America and Europe. As of 2020, approximately 300,000 infected people are living in the United States, and in 2018 it was estimated that 30,000 to 40,000 Americans had Chagas cardiomyopathy. The vast majority of cases in the United States occur in immigrants from Latin America, but local transmission is possible. Eleven triatomine species are native to the United States, and some southern states have persistent cycles of disease transmission between insect vectors and animal reservoirs, which include woodrats, possums, raccoons, armadillos and skunks. However, locally acquired infection is very rare: only 28 cases were documented from 1955 to 2015. As of 2013, the cost of treatment in the United States was estimated to be US$900 million annually (global cost $7 billion), which included hospitalization and medical devices such as pacemakers.", "title": "Epidemiology" }, { "paragraph_id": 35, "text": "Chagas disease affects approximately 68,000 to 123,000 people in Europe as of 2019. Spain, which has a high rate of immigration from Latin America, has the highest prevalence of the disease. It is estimated that 50,000 to 70,000 Spanish people are living with Chagas disease, accounting for the majority of European cases. The prevalence varies widely within European countries due to differing immigration patterns. Italy has the second highest prevalence, followed by the Netherlands, the United Kingdom, and Germany.", "title": "Epidemiology" }, { "paragraph_id": 36, "text": "T. cruzi likely circulated in South American mammals long before the arrival of humans on the continent. T. cruzi has been detected in ancient human remains across South America, from a 9000-year-old Chinchorro mummy in the Atacama Desert, to remains of various ages in Minas Gerais, to an 1100-year-old mummy as far north as the Chihuahuan Desert near the Rio Grande. Many early written accounts describe symptoms consistent with Chagas disease, with early descriptions of the disease sometimes attributed to Miguel Diaz Pimenta (1707), Luís Gomes Ferreira [pt] (1735), and Theodoro J. H. Langgaard (1842).", "title": "History" }, { "paragraph_id": 37, "text": "The formal description of Chagas disease was made by Carlos Chagas in 1909 after examining a two-year-old girl with fever, swollen lymph nodes, and an enlarged spleen and liver. Upon examination of her blood, Chagas saw trypanosomes identical to those he had recently identified from the hindgut of triatomine bugs and named Trypanosoma cruzi in honor of his mentor, Brazilian physician Oswaldo Cruz. He sent infected triatomine bugs to Cruz in Rio de Janeiro, who showed the bite of the infected triatomine could transmit T. cruzi to marmoset monkeys as well. In just two years, 1908 and 1909, Chagas published descriptions of the disease, the organism that caused it, and the insect vector required for infection. Almost immediately thereafter, at the suggestion of Miguel Couto, then professor of the Faculdade de Medicina do Rio de Janeiro [pt], the disease was widely referred to as \"Chagas disease\". Chagas' discovery brought him national and international renown, but in highlighting the inadequacies of the Brazilian government's response to the disease, Chagas attracted criticism to himself and to the disease that bore his name, stifling research on his discovery and likely frustrating his nomination for the Nobel Prize in 1921.", "title": "History" }, { "paragraph_id": 38, "text": "In the 1930s, Salvador Mazza rekindled Chagas disease research, describing over a thousand cases in Argentina's Chaco Province. In Argentina, the disease is known as mal de Chagas-Mazza in his honor. Serological tests for Chagas disease were introduced in the 1940s, demonstrating that infection with T. cruzi was widespread across Latin America. This, combined with successes eliminating the malaria vector through insecticide use, spurred the creation of public health campaigns focused on treating houses with insecticides to eradicate triatomine bugs. The 1950s saw the discovery that treating blood with crystal violet could eradicate the parasite, leading to its widespread use in transfusion screening programs in Latin America. Large-scale control programs began to take form in the 1960s, first in São Paulo, then various locations in Argentina, then national-level programs across Latin America. These programs received a major boost in the 1980s with the introduction of pyrethroid insecticides, which did not leave stains or odors after application and were longer-lasting and more cost-effective. Regional bodies dedicated to controlling Chagas disease arose through support of the Pan American Health Organization, with the Initiative of the Southern Cone for the Elimination of Chagas Diseases launching in 1991, followed by the Initiative of the Andean countries (1997), Initiative of the Central American countries (1997), and the Initiative of the Amazon countries (2004).", "title": "History" }, { "paragraph_id": 39, "text": "Fexinidazole, an antiparasitic drug approved for treating African trypanosomiasis, has shown activity against Chagas disease in animal models. As of 2019, it is undergoing phase II clinical trials for chronic Chagas disease in Spain. Other drug candidates include GNF6702, a proteasome inhibitor that is effective against Chagas disease in mice and is undergoing preliminary toxicity studies, and AN4169, which has had promising results in animal models.", "title": "Research" }, { "paragraph_id": 40, "text": "A number of experimental vaccines have been tested in animals. In addition to subunit vaccines, some approaches have involved vaccination with attenuated T. cruzi parasites or organisms that express some of the same antigens as T. cruzi but do not cause human disease, such as Trypanosoma rangeli or Phytomonas serpens. DNA vaccination has also been explored. As of 2019, vaccine research has mainly been limited to small animal models.", "title": "Research" }, { "paragraph_id": 41, "text": "As of 2018, standard diagnostic tests for Chagas disease were limited in their ability to measure the effectiveness of antiparasitic treatment, as serological tests may remain positive for years after T. cruzi is eliminated from the body, and PCR may give false-negative results when the parasite concentration in the blood is low. Several potential biomarkers of treatment response are under investigation, such as immunoassays against specific T. cruzi antigens, flow cytometry testing to detect antibodies against different life stages of T. cruzi, and markers of physiological changes caused by the parasite, such as alterations in coagulation and lipid metabolism.", "title": "Research" }, { "paragraph_id": 42, "text": "Another research area is the use of biomarkers to predict the progression of chronic disease. Serum levels of tumor necrosis factor alpha, brain and atrial natriuretic peptide, and angiotensin-converting enzyme 2 have been studied as indicators of the prognosis of Chagas cardiomyopathy.", "title": "Research" }, { "paragraph_id": 43, "text": "T. cruzi shed acute-phase antigen (SAPA), which can be detected in blood using ELISA or Western blot, has been used as an indicator of early acute and congenital infection. An assay for T. cruzi antigens in urine has been developed to diagnose congenital disease.", "title": "Research" } ]	Chagas disease, also known as American trypanosomiasis, is a tropical parasitic disease caused by Trypanosoma cruzi. It is spread mostly by insects in the subfamily Triatominae, known as "kissing bugs". The symptoms change over the course of the infection. In the early stage, symptoms are typically either not present or mild, and may include fever, swollen lymph nodes, headaches, or swelling at the site of the bite. After four to eight weeks, untreated individuals enter the chronic phase of disease, which in most cases does not result in further symptoms. Up to 45% of people with chronic infections develop heart disease 10–30 years after the initial illness, which can lead to heart failure. Digestive complications, including an enlarged esophagus or an enlarged colon, may also occur in up to 21% of people, and up to 10% of people may experience nerve damage. T. cruzi is commonly spread to humans and other mammals by the kissing bug's bite wound and infected feces. The disease may also be spread through blood transfusion, organ transplantation, consuming food or drink contaminated with the parasites, and vertical transmission. Diagnosis of early disease is by finding the parasite in the blood using a microscope or detecting its DNA by polymerase chain reaction. Chronic disease is diagnosed by finding antibodies for T. cruzi in the blood. Prevention focuses on eliminating kissing bugs and avoiding their bites. This may involve the use of insecticides or bed-nets. Other preventive efforts include screening blood used for transfusions. Early infections are treatable with the medications benznidazole or nifurtimox, which usually cure the disease if given shortly after the person is infected, but become less effective the longer a person has had Chagas disease. When used in chronic disease, medication may delay or prevent the development of end-stage symptoms. Benznidazole and nifurtimox often cause side effects, including skin disorders, digestive system irritation, and neurological symptoms, which can result in treatment being discontinued. New drugs for Chagas disease are under development, and while experimental vaccines have been studied in animal models, a human vaccine has not been developed. It is estimated that 6.5 million people, mostly in Mexico, Central America and South America, have Chagas disease as of 2019, resulting in approximately 9,490 annual deaths. Most people with the disease are poor, and most do not realize they are infected. Large-scale population migrations have carried Chagas disease to new regions, which include the United States and many European countries. The disease affects more than 150 types of animals. The disease was first described in 1909 by Brazilian physician Carlos Chagas, after whom it is named. Chagas disease is classified as a neglected tropical disease.	2001-11-05T16:31:23Z	2023-12-12T22:15:18Z	[ "Template:Infobox medical condition (new)", "Template:Authority control", "Template:Featured article", "Template:Reflist", "Template:Cite journal", "Template:Commons category", "Template:Short description", "Template:Offline", "Template:Curlie", "Template:Medical condition classification and resources", "Template:Diseases of Poverty", "Template:Protozoal diseases", "Template:Use dmy dates", "Template:Nowrap", "Template:Ill", "Template:Cite web", "Template:Cite book", "Template:Cite press release" ]	https://en.wikipedia.org/wiki/Chagas_disease
7,015	Christiaan Barnard	Christiaan Neethling Barnard (8 November 1922 – 2 September 2001) was a South African cardiac surgeon who performed the world's first human-to-human heart transplant operation. On 3 December 1967, Barnard transplanted the heart of accident victim Denise Darvall into the chest of 54-year-old Louis Washkansky, with Washkansky regaining full consciousness and being able to talk easily with his wife, before dying eighteen days later of pneumonia, largely brought on by the anti-rejection drugs that suppressed his immune system. Barnard had told Mr. and Mrs. Washkansky that the operation had an 80% chance of success, an assessment which has been criticised as misleading. Barnard's second transplant patient, Philip Blaiberg, whose operation was performed at the beginning of 1968, returned home from the hospital and lived for a year and a half. Born in Beaufort West, Cape Province, Barnard studied medicine and practised for several years in his native South Africa. As a young doctor experimenting on dogs, Barnard developed a remedy for the infant defect of intestinal atresia. His technique saved the lives of ten babies in Cape Town and was adopted by surgeons in Britain and the United States. In 1955, he travelled to the United States and was initially assigned further gastrointestinal work by Owen Harding Wangensteen at the University of Minnesota. He was introduced to the heart-lung machine, and Barnard was allowed to transfer to the service run by open heart surgery pioneer Walt Lillehei. Upon returning to South Africa in 1958, Barnard was appointed head of the Department of Experimental Surgery at the Groote Schuur Hospital, Cape Town. He retired as head of the Department of Cardiothoracic Surgery in Cape Town in 1983 after rheumatoid arthritis in his hands ended his surgical career. He became interested in anti-aging research, and in 1986 his reputation suffered when he promoted Glycel, an expensive "anti-aging" skin cream, whose approval was withdrawn by the United States Food and Drug Administration soon thereafter. During his remaining years, he established the Christiaan Barnard Foundation, dedicated to helping underprivileged children throughout the world. He died in 2001 at the age of 78 after an asthma attack. Barnard grew up in Beaufort West, Cape Province, Union of South Africa. His father, Adam Barnard, was a minister in the Dutch Reformed Church. One of his four brothers, Abraham, was a "blue baby" who died of a heart problem at the age of three (Barnard would later guess that it was tetralogy of Fallot). The family also experienced the loss of a daughter who was stillborn and who had been the fraternal twin of Barnard's older brother Johannes, who was twelve years older than Chris. Barnard matriculated from the Beaufort West High School in 1940, and went to study medicine at the University of Cape Town Medical School, where he obtained his MB ChB in 1945. His father served as a missionary to mixed-race people. His mother, the former Maria Elisabeth de Swart, instilled in the surviving brothers the belief that they could do anything they set their minds to. Barnard did his internship and residency at the Groote Schuur Hospital in Cape Town, after which he worked as a general practitioner in Ceres, a rural town in the Cape Province. In 1951, he returned to Cape Town where he worked at the City Hospital as a Senior Resident Medical Officer, and in the Department of Medicine at Groote Schuur as a registrar. He completed his master's degree, receiving Master of Medicine in 1953 from the University of Cape Town. In the same year he obtained a doctorate in medicine (MD) from the same university for a dissertation titled "The treatment of tuberculous meningitis". Soon after qualifying as a doctor, Barnard performed experiments on dogs while investigating intestinal atresia, congenital, life-threatening obstructions in the intestines. He followed a medical hunch that this was caused by inadequate blood flow to the fetus. After nine months and forty-three attempts, Barnard was able to reproduce this condition in a fetus puppy by tying off some of the blood supply to a puppy's intestines and then placing the animal back in the womb, after which it was born some two weeks later, with the condition of intestinal atresia. He was also able to cure the condition by removing the piece of intestine with inadequate blood supply. The mistake of previous surgeons had been attempting to reconnect ends of intestine which themselves still had inadequate blood supply. To be successful, it was typically necessary to remove between 15 and 20 centimeters of intestine (6 to 8 inches). Jannie Louw used this innovation in a clinical setting, and Barnard's method saved the lives of ten babies in Cape Town. This technique was also adapted by surgeons in Britain and the US. In addition, Barnard analyzed 259 cases of tubercular meningitis. Owen Wangensteen at the University of Minnesota in the United States had been impressed by the work of Alan Thal, a young South African doctor working in Minnesota. Wangensteen asked the Groote Schuur Head of Medicine John Brock if he might recommend any similarly talented South Africans, and Brock recommended Barnard. In December 1955, Barnard travelled to Minneapolis, Minnesota to begin a two-year scholarship under Chief of Surgery Wangensteen, who assigned Barnard more work on the intestines, which Barnard accepted even though he wanted to move onto something new. Simply by luck, whenever Barnard needed a break from this work, he could wander across the hall and talk with Vince Gott who ran the lab for open-heart surgery pioneer Walt Lillehei. Gott had begun to develop a technique of running blood backwards through the veins of the heart so Lillehei could more easily operate on the aortic valve (McRae writes, "It was the type of inspired thinking that entranced Barnard"). In March 1956, Gott asked Barnard to help him run the heart-lung machine for an operation. Shortly thereafter, Wangensteen agreed to let Barnard switch to Lillehei's service. It was during this time that Barnard became acquainted with fellow future heart transplantation surgeon Norman Shumway. Barnard also became friendly with Gil Campbell, who had demonstrated that a dog's lung could be used to oxygenate blood during open-heart surgery. (The year before Barnard arrived, Lillehei and Campbell had used this procedure for twenty minutes during surgery on a 13-year-old boy with ventricular septal defect, and the boy had made a full recovery.) Barnard and Campbell met regularly for early breakfast. In 1958, Barnard received a Master of Science in Surgery for a thesis titled "The aortic valve – problems in the fabrication and testing of a prosthetic valve". The same year he was awarded a Ph.D. for his dissertation titled "The aetiology of congenital intestinal atresia". Barnard described the two years he spent in the United States as "the most fascinating time in my life." Upon returning to South Africa in 1958, Barnard was appointed head of the Department of Experimental Surgery at Groote Schuur hospital, as well as holding a joint post at the University of Cape Town. He was promoted to full-time lecturer and Director of Surgical Research at the University of Cape Town. In 1960, he flew to Moscow in order to meet Vladimir Demikhov, a top expert on organ transplants (later he credited Demikhov's accomplishment saying that "if there is a father of heart and lung transplantation then Demikhov certainly deserves this title.") In 1961 he was appointed Head of the Division of Cardiothoracic Surgery at the teaching hospitals of the University of Cape Town. He rose to Associate Professor in the Department of Surgery at the University of Cape Town in 1962. Barnard's younger brother Marius, who also studied medicine, eventually became Barnard's right-hand man at the department of Cardiac Surgery. Over time, Barnard became known as a brilliant surgeon with many contributions to the treatment of cardiac diseases, such as the Tetralogy of Fallot and Ebstein's anomaly. He was promoted to Professor of Surgical Science in the Department of Surgery at the University of Cape Town in 1972. In 1981, Barnard became a founding member of the World Cultural Council. Among the recognition he received over the years, he was named Professor Emeritus in 1984. Following the first successful kidney transplant in 1953, in the United States, Barnard performed the second kidney transplant in South Africa in October 1967, the first having been done in Johannesburg the previous year. On 23 January 1964, James Hardy at the University of Mississippi Medical Center in Jackson, Mississippi, performed the world's first heart transplant and world's first cardiac xenotransplant by transplanting the heart of a chimpanzee into a desperately ill and dying man. This heart did beat in the patient's chest for approximately 60 to 90 minutes. The patient, Boyd Rush, died without regaining consciousness. Barnard had experimentally transplanted forty-eight hearts into dogs, which was about a fifth the number that Adrian Kantrowitz had performed at Maimonides Medical Center in New York and about a sixth the number Norman Shumway had performed at Stanford University in California. Barnard had no dogs which had survived longer than ten days, unlike Kantrowitz and Shumway who had had dogs survive for more than a year. With the availability of new breakthroughs introduced by several pioneers, also including Richard Lower at the Medical College of Virginia, several surgical teams were in a position to prepare for a human heart transplant. Barnard had a patient willing to undergo the procedure, but as with other surgeons, he needed a suitable donor. During the Apartheid era in South Africa, non-white persons and citizens were not given equal opportunities in the medical professions. At Groote Schuur Hospital, Hamilton Naki was an informally taught surgeon. He started out as a gardener and cleaner. One day he was asked to help out with an experiment on a giraffe. From this modest beginning, Naki became principal lab technician and taught hundreds of surgeons, and assisted with Barnard's organ transplant program. Barnard said, "Hamilton Naki had better technical skills than I did. He was a better craftsman than me, especially when it came to stitching, and had very good hands in the theatre". A popular myth, propagated principally by a widely discredited documentary film called Hidden Heart and an erroneous newspaper article, maintains incorrectly that Naki was present during the Washkansky transplant. Barnard performed the world's first human-to-human heart transplant operation in the early morning hours of Sunday 3 December 1967. Louis Washkansky, a 54-year-old grocer who was suffering from diabetes and incurable heart disease, was the patient. Barnard was assisted by his brother Marius Barnard, as well as a team of thirty staff members. The operation lasted approximately five hours. Barnard stated to Washkansky and his wife Ann Washkansky that the transplant had an 80% chance of success. This has been criticised by the ethicists Peter Singer and Helga Kuhse as making claims for chances of success to the patient and family which were "unfounded" and "misleading". Barnard later wrote, "For a dying man it is not a difficult decision because he knows he is at the end. If a lion chases you to the bank of a river filled with crocodiles, you will leap into the water, convinced you have a chance to swim to the other side." The donor heart came from a young woman, Denise Darvall, who had been rendered brain dead in an accident on 2 December 1967, while crossing a street in Cape Town. On examination at Groote Schuur hospital, Darvall had two serious fractures in her skull, with no electrical activity in her brain detected, and no sign of pain when ice water was poured into her ear. Coert Venter and Bertie Bosman requested permission from Darvall's father for Denise's heart to be used in the transplant attempt. The afternoon before his first transplant, Barnard dozed at his home while listening to music. When he awoke, he decided to modify Shumway and Lower's technique. Instead of cutting straight across the back of the atrial chambers of the donor heart, he would avoid damage to the septum and instead cut two small holes for the venae cavae and pulmonary veins. Prior to the transplant, rather than wait for Darvall's heart to stop beating, at his brother Marius Barnard's urging, Christiaan had injected potassium into her heart to paralyse it and render her technically dead by the whole-body standard. Twenty years later, Marius Barnard recounted, "Chris stood there for a few moments, watching, then stood back and said, 'It works.'" Washkansky survived the operation and lived for 18 days; he died from pneumonia, possibly due to the immunosuppressive drugs he was taking. Barnard and his patient received worldwide publicity. As a 2017 BBC retrospective article describes, "Journalists and film crews flooded into Cape Town's Groote Schuur Hospital, soon making Barnard and Washkansky household names." Barnard himself was described as "charismatic" and "photogenic." And the operation was initially reported as "successful" even though Washkansky only lived a further 18 days. Worldwide, approximately 100 transplants were performed by various doctors during 1968. However, only a third of these patients lived longer than three months. Many medical centers stopped performing transplants. In fact, a US National Institutes of Health publication states, "Within several years, only Shumway's team at Stanford was attempting transplants." Barnard's second transplant operation was conducted on 2 January 1968, and the patient, Philip Blaiberg, survived for 19 months. Blaiberg's heart was donated by Clive Haupt, a 24-year-old black man who suffered a stroke, inciting controversy (especially in the African-American press) during the time of South African apartheid. Dirk van Zyl, who received a new heart in 1971, was the longest-lived recipient, surviving over 23 years. Between December 1967 and November 1974 at Groote Schuur Hospital in Cape Town, South Africa, ten heart transplants were performed, as well as a heart and lung transplant in 1971. Of these ten patients, four lived longer than 18 months, with two of these four becoming long-term survivors. One patient, Dorothy Fischer, lived for over thirteen years and another for over twenty-four years. Full recovery of donor heart function often takes place over hours or days, during which time considerable damage can occur. Other deaths to patients can occur from preexisting conditions. For example, in pulmonary hypertension the patient's right ventricle has often adapted to the higher pressure over time and, although diseased and hypertrophied, is often capable of maintaining circulation to the lungs. Barnard designed the idea of the heterotopic (or "piggy back" transplant) in which the patient's diseased heart is left in place while the donor heart is added, essentially forming a "double heart". Barnard performed the first such heterotopic heart transplant in 1974. From November 1974 through December 1983, 49 consecutive heterotopic heart transplants on 43 patients were performed at Groote Schuur. The survival rate for patients at one year was over 60%, as compared to less than 40% with standard transplants, and the survival rate at five years was over 36% as compared to less than 20% with standard transplants. Many surgeons gave up cardiac transplantation due to poor results, often due to rejection of the transplanted heart by the patient's immune system. Barnard persisted until the advent of cyclosporine, an effective immunosuppressive drug, which helped revive the operation throughout the world. He also attempted xenotransplantation in two human patients, utilizing a baboon heart and chimpanzee heart, respectively. Barnard was an outspoken opponent of South Africa's laws of apartheid, and was not afraid to criticise his nation's government, although he had to temper his remarks to some extent to travel abroad. Rather than leaving his homeland, he used his fame to campaign for a change in the law. Christiaan's brother, Marius Barnard, went into politics, and was elected to the legislature from the Progressive Federal Party. Barnard later stated that the reason he never won the Nobel Prize in Physiology or Medicine was probably because he was a "white South African". Shortly before his visit to Kenya in 1978, the following was written about his views regarding race relations in South Africa; "While he believes in the participation of Africans in the political process of South Africa, he is opposed to a one-man-one-vote system in South Africa". In answering a hypothetical question on how he would solve the race problem were he a "benevolent dictator in South Africa", Barnard stated the following in a long interview at the Weekly Review: The interview ended with the following summary from he himself; "I often say that, like King Lear, South Africa is a country more sinned against than sinning." Barnard's first marriage was to Aletta Gertruida Louw, a nurse, whom he married in 1948 while practising medicine in Ceres. The couple had two children: Deirdre (born 1950) and Andre (1951–1984). International fame took a toll on his personal life, and in 1969, Barnard and his wife divorced. In 1970, he married heiress Barbara Zoellner when she was 19, the same age as his son, and they had two children: Frederick (born 1972) and Christiaan Jr. (born 1974). He divorced Zoellner in 1982. Barnard married for a third time in 1988 to Karin Setzkorn, a young model. They also had two children, Armin (born 1989) and Lara (born 1997). This last marriage also ended in divorce in 2000. Barnard described in his autobiography The Second Life a one-night extramarital affair with Italian film star Gina Lollobrigida, that occurred in January 1968. During that visit to Rome he received an audience from Pope Paul VI. In October 2016, US Congresswoman Ann McLane Kuster (D-NH) stated that Barnard sexually assaulted her when she was 23 years old. According to Kuster, he attempted to grope her under her skirt, while seated at a business luncheon with Rep. Pete McCloskey (R-CA), whom she worked for at the time. Barnard retired as Head of the Department of Cardiothoracic Surgery in Cape Town in 1983 after developing rheumatoid arthritis in his hands which ended his surgical career. He had struggled with arthritis since 1956, when it was diagnosed during his postgraduate work in the United States. After retirement, he spent two years as the Scientist-In-Residence at the Oklahoma Transplantation Institute in the United States and as an acting consultant for various institutions. He had by this time become very interested in anti-aging research, and his reputation suffered in 1986 when he promoted Glycel, an expensive "anti-aging" skin cream, whose approval was withdrawn by the United States Food and Drug Administration soon thereafter. He also spent time as a research advisor to the Clinique la Prairie, in Switzerland, where the controversial "rejuvenation therapy" was practised. Barnard divided the remainder of his years between Austria, where he established the Christiaan Barnard Foundation, dedicated to helping underprivileged children throughout the world, and his game farm in Beaufort West, South Africa. In his later years, he had Basal-cell carcinoma (skin cancer) on his face, for which he was treated in Parow, South Africa. Christiaan Barnard died on 2 September 2001, while on holiday in Paphos, Cyprus. Early reports stated that he had died of a heart attack, but an autopsy showed his death was caused by a severe asthma attack. Barnard wrote two autobiographies. His first book, One Life, was published in 1969 (ISBN 0245599525) and sold copies worldwide. Some of the proceeds were used to set up the Chris Barnard Fund for research into heart disease and heart transplants in Cape Town. His second autobiography, The Second Life, was published in 1993, eight years before his death (ISBN 0947461388). Apart from his autobiographies, Barnard wrote books including:	[ { "paragraph_id": 0, "text": "Christiaan Neethling Barnard (8 November 1922 – 2 September 2001) was a South African cardiac surgeon who performed the world's first human-to-human heart transplant operation. On 3 December 1967, Barnard transplanted the heart of accident victim Denise Darvall into the chest of 54-year-old Louis Washkansky, with Washkansky regaining full consciousness and being able to talk easily with his wife, before dying eighteen days later of pneumonia, largely brought on by the anti-rejection drugs that suppressed his immune system. Barnard had told Mr. and Mrs. Washkansky that the operation had an 80% chance of success, an assessment which has been criticised as misleading. Barnard's second transplant patient, Philip Blaiberg, whose operation was performed at the beginning of 1968, returned home from the hospital and lived for a year and a half.", "title": "" }, { "paragraph_id": 1, "text": "Born in Beaufort West, Cape Province, Barnard studied medicine and practised for several years in his native South Africa. As a young doctor experimenting on dogs, Barnard developed a remedy for the infant defect of intestinal atresia. His technique saved the lives of ten babies in Cape Town and was adopted by surgeons in Britain and the United States. In 1955, he travelled to the United States and was initially assigned further gastrointestinal work by Owen Harding Wangensteen at the University of Minnesota. He was introduced to the heart-lung machine, and Barnard was allowed to transfer to the service run by open heart surgery pioneer Walt Lillehei. Upon returning to South Africa in 1958, Barnard was appointed head of the Department of Experimental Surgery at the Groote Schuur Hospital, Cape Town.", "title": "" }, { "paragraph_id": 2, "text": "He retired as head of the Department of Cardiothoracic Surgery in Cape Town in 1983 after rheumatoid arthritis in his hands ended his surgical career. He became interested in anti-aging research, and in 1986 his reputation suffered when he promoted Glycel, an expensive \"anti-aging\" skin cream, whose approval was withdrawn by the United States Food and Drug Administration soon thereafter. During his remaining years, he established the Christiaan Barnard Foundation, dedicated to helping underprivileged children throughout the world. He died in 2001 at the age of 78 after an asthma attack.", "title": "" }, { "paragraph_id": 3, "text": "Barnard grew up in Beaufort West, Cape Province, Union of South Africa. His father, Adam Barnard, was a minister in the Dutch Reformed Church. One of his four brothers, Abraham, was a \"blue baby\" who died of a heart problem at the age of three (Barnard would later guess that it was tetralogy of Fallot). The family also experienced the loss of a daughter who was stillborn and who had been the fraternal twin of Barnard's older brother Johannes, who was twelve years older than Chris. Barnard matriculated from the Beaufort West High School in 1940, and went to study medicine at the University of Cape Town Medical School, where he obtained his MB ChB in 1945.", "title": "Early life" }, { "paragraph_id": 4, "text": "His father served as a missionary to mixed-race people. His mother, the former Maria Elisabeth de Swart, instilled in the surviving brothers the belief that they could do anything they set their minds to.", "title": "Early life" }, { "paragraph_id": 5, "text": "Barnard did his internship and residency at the Groote Schuur Hospital in Cape Town, after which he worked as a general practitioner in Ceres, a rural town in the Cape Province. In 1951, he returned to Cape Town where he worked at the City Hospital as a Senior Resident Medical Officer, and in the Department of Medicine at Groote Schuur as a registrar. He completed his master's degree, receiving Master of Medicine in 1953 from the University of Cape Town. In the same year he obtained a doctorate in medicine (MD) from the same university for a dissertation titled \"The treatment of tuberculous meningitis\".", "title": "Career" }, { "paragraph_id": 6, "text": "Soon after qualifying as a doctor, Barnard performed experiments on dogs while investigating intestinal atresia, congenital, life-threatening obstructions in the intestines. He followed a medical hunch that this was caused by inadequate blood flow to the fetus. After nine months and forty-three attempts, Barnard was able to reproduce this condition in a fetus puppy by tying off some of the blood supply to a puppy's intestines and then placing the animal back in the womb, after which it was born some two weeks later, with the condition of intestinal atresia. He was also able to cure the condition by removing the piece of intestine with inadequate blood supply. The mistake of previous surgeons had been attempting to reconnect ends of intestine which themselves still had inadequate blood supply. To be successful, it was typically necessary to remove between 15 and 20 centimeters of intestine (6 to 8 inches). Jannie Louw used this innovation in a clinical setting, and Barnard's method saved the lives of ten babies in Cape Town. This technique was also adapted by surgeons in Britain and the US. In addition, Barnard analyzed 259 cases of tubercular meningitis.", "title": "Career" }, { "paragraph_id": 7, "text": "Owen Wangensteen at the University of Minnesota in the United States had been impressed by the work of Alan Thal, a young South African doctor working in Minnesota. Wangensteen asked the Groote Schuur Head of Medicine John Brock if he might recommend any similarly talented South Africans, and Brock recommended Barnard. In December 1955, Barnard travelled to Minneapolis, Minnesota to begin a two-year scholarship under Chief of Surgery Wangensteen, who assigned Barnard more work on the intestines, which Barnard accepted even though he wanted to move onto something new. Simply by luck, whenever Barnard needed a break from this work, he could wander across the hall and talk with Vince Gott who ran the lab for open-heart surgery pioneer Walt Lillehei. Gott had begun to develop a technique of running blood backwards through the veins of the heart so Lillehei could more easily operate on the aortic valve (McRae writes, \"It was the type of inspired thinking that entranced Barnard\"). In March 1956, Gott asked Barnard to help him run the heart-lung machine for an operation. Shortly thereafter, Wangensteen agreed to let Barnard switch to Lillehei's service. It was during this time that Barnard became acquainted with fellow future heart transplantation surgeon Norman Shumway. Barnard also became friendly with Gil Campbell, who had demonstrated that a dog's lung could be used to oxygenate blood during open-heart surgery. (The year before Barnard arrived, Lillehei and Campbell had used this procedure for twenty minutes during surgery on a 13-year-old boy with ventricular septal defect, and the boy had made a full recovery.) Barnard and Campbell met regularly for early breakfast. In 1958, Barnard received a Master of Science in Surgery for a thesis titled \"The aortic valve – problems in the fabrication and testing of a prosthetic valve\". The same year he was awarded a Ph.D. for his dissertation titled \"The aetiology of congenital intestinal atresia\". Barnard described the two years he spent in the United States as \"the most fascinating time in my life.\"", "title": "Career" }, { "paragraph_id": 8, "text": "Upon returning to South Africa in 1958, Barnard was appointed head of the Department of Experimental Surgery at Groote Schuur hospital, as well as holding a joint post at the University of Cape Town. He was promoted to full-time lecturer and Director of Surgical Research at the University of Cape Town. In 1960, he flew to Moscow in order to meet Vladimir Demikhov, a top expert on organ transplants (later he credited Demikhov's accomplishment saying that \"if there is a father of heart and lung transplantation then Demikhov certainly deserves this title.\") In 1961 he was appointed Head of the Division of Cardiothoracic Surgery at the teaching hospitals of the University of Cape Town. He rose to Associate Professor in the Department of Surgery at the University of Cape Town in 1962. Barnard's younger brother Marius, who also studied medicine, eventually became Barnard's right-hand man at the department of Cardiac Surgery. Over time, Barnard became known as a brilliant surgeon with many contributions to the treatment of cardiac diseases, such as the Tetralogy of Fallot and Ebstein's anomaly. He was promoted to Professor of Surgical Science in the Department of Surgery at the University of Cape Town in 1972. In 1981, Barnard became a founding member of the World Cultural Council. Among the recognition he received over the years, he was named Professor Emeritus in 1984.", "title": "Career" }, { "paragraph_id": 9, "text": "Following the first successful kidney transplant in 1953, in the United States, Barnard performed the second kidney transplant in South Africa in October 1967, the first having been done in Johannesburg the previous year.", "title": "Historical context" }, { "paragraph_id": 10, "text": "On 23 January 1964, James Hardy at the University of Mississippi Medical Center in Jackson, Mississippi, performed the world's first heart transplant and world's first cardiac xenotransplant by transplanting the heart of a chimpanzee into a desperately ill and dying man. This heart did beat in the patient's chest for approximately 60 to 90 minutes. The patient, Boyd Rush, died without regaining consciousness.", "title": "Historical context" }, { "paragraph_id": 11, "text": "Barnard had experimentally transplanted forty-eight hearts into dogs, which was about a fifth the number that Adrian Kantrowitz had performed at Maimonides Medical Center in New York and about a sixth the number Norman Shumway had performed at Stanford University in California. Barnard had no dogs which had survived longer than ten days, unlike Kantrowitz and Shumway who had had dogs survive for more than a year.", "title": "Historical context" }, { "paragraph_id": 12, "text": "With the availability of new breakthroughs introduced by several pioneers, also including Richard Lower at the Medical College of Virginia, several surgical teams were in a position to prepare for a human heart transplant. Barnard had a patient willing to undergo the procedure, but as with other surgeons, he needed a suitable donor.", "title": "Historical context" }, { "paragraph_id": 13, "text": "During the Apartheid era in South Africa, non-white persons and citizens were not given equal opportunities in the medical professions. At Groote Schuur Hospital, Hamilton Naki was an informally taught surgeon. He started out as a gardener and cleaner. One day he was asked to help out with an experiment on a giraffe. From this modest beginning, Naki became principal lab technician and taught hundreds of surgeons, and assisted with Barnard's organ transplant program. Barnard said, \"Hamilton Naki had better technical skills than I did. He was a better craftsman than me, especially when it came to stitching, and had very good hands in the theatre\". A popular myth, propagated principally by a widely discredited documentary film called Hidden Heart and an erroneous newspaper article, maintains incorrectly that Naki was present during the Washkansky transplant.", "title": "Historical context" }, { "paragraph_id": 14, "text": "Barnard performed the world's first human-to-human heart transplant operation in the early morning hours of Sunday 3 December 1967. Louis Washkansky, a 54-year-old grocer who was suffering from diabetes and incurable heart disease, was the patient. Barnard was assisted by his brother Marius Barnard, as well as a team of thirty staff members. The operation lasted approximately five hours.", "title": "First human-to-human heart transplant" }, { "paragraph_id": 15, "text": "Barnard stated to Washkansky and his wife Ann Washkansky that the transplant had an 80% chance of success. This has been criticised by the ethicists Peter Singer and Helga Kuhse as making claims for chances of success to the patient and family which were \"unfounded\" and \"misleading\".", "title": "First human-to-human heart transplant" }, { "paragraph_id": 16, "text": "Barnard later wrote, \"For a dying man it is not a difficult decision because he knows he is at the end. If a lion chases you to the bank of a river filled with crocodiles, you will leap into the water, convinced you have a chance to swim to the other side.\" The donor heart came from a young woman, Denise Darvall, who had been rendered brain dead in an accident on 2 December 1967, while crossing a street in Cape Town. On examination at Groote Schuur hospital, Darvall had two serious fractures in her skull, with no electrical activity in her brain detected, and no sign of pain when ice water was poured into her ear. Coert Venter and Bertie Bosman requested permission from Darvall's father for Denise's heart to be used in the transplant attempt. The afternoon before his first transplant, Barnard dozed at his home while listening to music. When he awoke, he decided to modify Shumway and Lower's technique. Instead of cutting straight across the back of the atrial chambers of the donor heart, he would avoid damage to the septum and instead cut two small holes for the venae cavae and pulmonary veins. Prior to the transplant, rather than wait for Darvall's heart to stop beating, at his brother Marius Barnard's urging, Christiaan had injected potassium into her heart to paralyse it and render her technically dead by the whole-body standard. Twenty years later, Marius Barnard recounted, \"Chris stood there for a few moments, watching, then stood back and said, 'It works.'\"", "title": "First human-to-human heart transplant" }, { "paragraph_id": 17, "text": "Washkansky survived the operation and lived for 18 days; he died from pneumonia, possibly due to the immunosuppressive drugs he was taking.", "title": "First human-to-human heart transplant" }, { "paragraph_id": 18, "text": "Barnard and his patient received worldwide publicity. As a 2017 BBC retrospective article describes, \"Journalists and film crews flooded into Cape Town's Groote Schuur Hospital, soon making Barnard and Washkansky household names.\" Barnard himself was described as \"charismatic\" and \"photogenic.\" And the operation was initially reported as \"successful\" even though Washkansky only lived a further 18 days.", "title": "Additional heart transplants" }, { "paragraph_id": 19, "text": "Worldwide, approximately 100 transplants were performed by various doctors during 1968. However, only a third of these patients lived longer than three months. Many medical centers stopped performing transplants. In fact, a US National Institutes of Health publication states, \"Within several years, only Shumway's team at Stanford was attempting transplants.\"", "title": "Additional heart transplants" }, { "paragraph_id": 20, "text": "Barnard's second transplant operation was conducted on 2 January 1968, and the patient, Philip Blaiberg, survived for 19 months. Blaiberg's heart was donated by Clive Haupt, a 24-year-old black man who suffered a stroke, inciting controversy (especially in the African-American press) during the time of South African apartheid. Dirk van Zyl, who received a new heart in 1971, was the longest-lived recipient, surviving over 23 years.", "title": "Additional heart transplants" }, { "paragraph_id": 21, "text": "Between December 1967 and November 1974 at Groote Schuur Hospital in Cape Town, South Africa, ten heart transplants were performed, as well as a heart and lung transplant in 1971. Of these ten patients, four lived longer than 18 months, with two of these four becoming long-term survivors. One patient, Dorothy Fischer, lived for over thirteen years and another for over twenty-four years.", "title": "Additional heart transplants" }, { "paragraph_id": 22, "text": "Full recovery of donor heart function often takes place over hours or days, during which time considerable damage can occur. Other deaths to patients can occur from preexisting conditions. For example, in pulmonary hypertension the patient's right ventricle has often adapted to the higher pressure over time and, although diseased and hypertrophied, is often capable of maintaining circulation to the lungs. Barnard designed the idea of the heterotopic (or \"piggy back\" transplant) in which the patient's diseased heart is left in place while the donor heart is added, essentially forming a \"double heart\". Barnard performed the first such heterotopic heart transplant in 1974.", "title": "Additional heart transplants" }, { "paragraph_id": 23, "text": "From November 1974 through December 1983, 49 consecutive heterotopic heart transplants on 43 patients were performed at Groote Schuur. The survival rate for patients at one year was over 60%, as compared to less than 40% with standard transplants, and the survival rate at five years was over 36% as compared to less than 20% with standard transplants.", "title": "Additional heart transplants" }, { "paragraph_id": 24, "text": "Many surgeons gave up cardiac transplantation due to poor results, often due to rejection of the transplanted heart by the patient's immune system. Barnard persisted until the advent of cyclosporine, an effective immunosuppressive drug, which helped revive the operation throughout the world. He also attempted xenotransplantation in two human patients, utilizing a baboon heart and chimpanzee heart, respectively.", "title": "Additional heart transplants" }, { "paragraph_id": 25, "text": "Barnard was an outspoken opponent of South Africa's laws of apartheid, and was not afraid to criticise his nation's government, although he had to temper his remarks to some extent to travel abroad. Rather than leaving his homeland, he used his fame to campaign for a change in the law. Christiaan's brother, Marius Barnard, went into politics, and was elected to the legislature from the Progressive Federal Party. Barnard later stated that the reason he never won the Nobel Prize in Physiology or Medicine was probably because he was a \"white South African\".", "title": "Public life" }, { "paragraph_id": 26, "text": "Shortly before his visit to Kenya in 1978, the following was written about his views regarding race relations in South Africa; \"While he believes in the participation of Africans in the political process of South Africa, he is opposed to a one-man-one-vote system in South Africa\".", "title": "Public life" }, { "paragraph_id": 27, "text": "In answering a hypothetical question on how he would solve the race problem were he a \"benevolent dictator in South Africa\", Barnard stated the following in a long interview at the Weekly Review:", "title": "Public life" }, { "paragraph_id": 28, "text": "The interview ended with the following summary from he himself; \"I often say that, like King Lear, South Africa is a country more sinned against than sinning.\"", "title": "Public life" }, { "paragraph_id": 29, "text": "Barnard's first marriage was to Aletta Gertruida Louw, a nurse, whom he married in 1948 while practising medicine in Ceres. The couple had two children: Deirdre (born 1950) and Andre (1951–1984). International fame took a toll on his personal life, and in 1969, Barnard and his wife divorced. In 1970, he married heiress Barbara Zoellner when she was 19, the same age as his son, and they had two children: Frederick (born 1972) and Christiaan Jr. (born 1974). He divorced Zoellner in 1982. Barnard married for a third time in 1988 to Karin Setzkorn, a young model. They also had two children, Armin (born 1989) and Lara (born 1997). This last marriage also ended in divorce in 2000.", "title": "Personal life" }, { "paragraph_id": 30, "text": "Barnard described in his autobiography The Second Life a one-night extramarital affair with Italian film star Gina Lollobrigida, that occurred in January 1968. During that visit to Rome he received an audience from Pope Paul VI.", "title": "Personal life" }, { "paragraph_id": 31, "text": "In October 2016, US Congresswoman Ann McLane Kuster (D-NH) stated that Barnard sexually assaulted her when she was 23 years old. According to Kuster, he attempted to grope her under her skirt, while seated at a business luncheon with Rep. Pete McCloskey (R-CA), whom she worked for at the time.", "title": "Personal life" }, { "paragraph_id": 32, "text": "Barnard retired as Head of the Department of Cardiothoracic Surgery in Cape Town in 1983 after developing rheumatoid arthritis in his hands which ended his surgical career. He had struggled with arthritis since 1956, when it was diagnosed during his postgraduate work in the United States. After retirement, he spent two years as the Scientist-In-Residence at the Oklahoma Transplantation Institute in the United States and as an acting consultant for various institutions.", "title": "Retirement" }, { "paragraph_id": 33, "text": "He had by this time become very interested in anti-aging research, and his reputation suffered in 1986 when he promoted Glycel, an expensive \"anti-aging\" skin cream, whose approval was withdrawn by the United States Food and Drug Administration soon thereafter. He also spent time as a research advisor to the Clinique la Prairie, in Switzerland, where the controversial \"rejuvenation therapy\" was practised.", "title": "Retirement" }, { "paragraph_id": 34, "text": "Barnard divided the remainder of his years between Austria, where he established the Christiaan Barnard Foundation, dedicated to helping underprivileged children throughout the world, and his game farm in Beaufort West, South Africa. In his later years, he had Basal-cell carcinoma (skin cancer) on his face, for which he was treated in Parow, South Africa.", "title": "Retirement" }, { "paragraph_id": 35, "text": "Christiaan Barnard died on 2 September 2001, while on holiday in Paphos, Cyprus. Early reports stated that he had died of a heart attack, but an autopsy showed his death was caused by a severe asthma attack.", "title": "Death" }, { "paragraph_id": 36, "text": "Barnard wrote two autobiographies. His first book, One Life, was published in 1969 (ISBN 0245599525) and sold copies worldwide. Some of the proceeds were used to set up the Chris Barnard Fund for research into heart disease and heart transplants in Cape Town. His second autobiography, The Second Life, was published in 1993, eight years before his death (ISBN 0947461388).", "title": "Books" }, { "paragraph_id": 37, "text": "Apart from his autobiographies, Barnard wrote books including:", "title": "Books" } ]	Christiaan Neethling Barnard was a South African cardiac surgeon who performed the world's first human-to-human heart transplant operation. On 3 December 1967, Barnard transplanted the heart of accident victim Denise Darvall into the chest of 54-year-old Louis Washkansky, with Washkansky regaining full consciousness and being able to talk easily with his wife, before dying eighteen days later of pneumonia, largely brought on by the anti-rejection drugs that suppressed his immune system. Barnard had told Mr. and Mrs. Washkansky that the operation had an 80% chance of success, an assessment which has been criticised as misleading. Barnard's second transplant patient, Philip Blaiberg, whose operation was performed at the beginning of 1968, returned home from the hospital and lived for a year and a half. Born in Beaufort West, Cape Province, Barnard studied medicine and practised for several years in his native South Africa. As a young doctor experimenting on dogs, Barnard developed a remedy for the infant defect of intestinal atresia. His technique saved the lives of ten babies in Cape Town and was adopted by surgeons in Britain and the United States. In 1955, he travelled to the United States and was initially assigned further gastrointestinal work by Owen Harding Wangensteen at the University of Minnesota. He was introduced to the heart-lung machine, and Barnard was allowed to transfer to the service run by open heart surgery pioneer Walt Lillehei. Upon returning to South Africa in 1958, Barnard was appointed head of the Department of Experimental Surgery at the Groote Schuur Hospital, Cape Town. He retired as head of the Department of Cardiothoracic Surgery in Cape Town in 1983 after rheumatoid arthritis in his hands ended his surgical career. He became interested in anti-aging research, and in 1986 his reputation suffered when he promoted Glycel, an expensive "anti-aging" skin cream, whose approval was withdrawn by the United States Food and Drug Administration soon thereafter. During his remaining years, he established the Christiaan Barnard Foundation, dedicated to helping underprivileged children throughout the world. He died in 2001 at the age of 78 after an asthma attack.	2001-11-08T13:22:31Z	2023-12-03T23:29:41Z	[ "Template:Redirect", "Template:Use South African English", "Template:Reflist", "Template:Cite journal", "Template:Authority control", "Template:Citation needed", "Template:ISBN", "Template:Cite magazine", "Template:Wikiquote", "Template:Cite book", "Template:Founding members of the World Cultural Council", "Template:Organ transplantation", "Template:Fact", "Template:Cite news", "Template:Webarchive", "Template:Interlanguage link", "Template:Cite web", "Template:Portal bar", "Template:Short description", "Template:Use dmy dates", "Template:Infobox medical person", "Template:Citation", "Template:Commons category" ]	https://en.wikipedia.org/wiki/Christiaan_Barnard
7,016	Concubinage	Concubinage is an interpersonal and sexual relationship between two people in which the couple does not want, or cannot, enter into a full marriage. Concubinage and marriage are often regarded as similar, but mutually exclusive. Concubinage was a formal and institutionalized practice in China until the 20th century that upheld concubines' rights and obligations. A concubine could be freeborn or of slave origin, and her experience could vary tremendously according to her master's whim. During the Mongol conquests, both foreign royals and captured women were taken as concubines. Concubinage was also common in Meiji Japan as a status symbol, and in Indian society, where the intermingling of different social groups and religions was frowned upon and a taboo, and concubinage could be practiced with women with whom marriage was considered undesirable. Many Middle Eastern societies used concubinage for reproduction. The practice of a barren wife giving her husband a slave as a concubine is recorded in the Code of Hammurabi and the Bible, where Abraham takes Hagar as pilegesh. The children of such relationships would be regarded as legitimate. Such concubinage was also widely practiced in the premodern Muslim world, and many of the rulers of the Abbasid caliphate and the Ottoman Empire were born out of such relationships. Throughout Africa, from Egypt to South Africa, slave concubinage resulted in racially mixed populations. The practice declined as a result of the abolition of slavery. In ancient Rome, the practice was formalized as concubinatus, the Latin term from which the English "concubine" is derived. It referred to any extramarital sexual relationship, most often that between a wealthy or politically powerful man and a woman of low social origins kept for sexual service. The marital status of the man was irrelevant and the concubine's children did not receive an inheritance. After Christianization of Roman Empire, Christian emperors improved the status of the concubine by granting concubines and their children the sorts of property and inheritance rights usually reserved for wives. In European colonies and American slave plantations, single and married men entered into long-term sexual relationships with local women. In the Dutch East Indies, concubinage created mixed-race Indo-European communities. In the Judeo-Christian world, the term concubine has almost exclusively been applied to women, although a cohabiting male may also be called a concubine. In the 21st century, concubinage is used in some Western countries as a gender-neutral legal term to refer to cohabitation (including cohabitation between same-sex partners). The English terms "concubine" and "concubinage" appeared in the 14th century, deriving from Latin terms in Roman society and law. The term concubine (c. 1300), meaning "a paramour, a woman who cohabits with a man without being married to him", comes from the Latin concubina (f.) and concubinus (m.), terms that in Roman law meant "one who lives unmarried with a married man or woman". The Latin terms are derived from the verb from concumbere "to lie with, to lie together, to cohabit," an assimilation of "com", a prefix meaning "with, together" and "cubare", meaning "to lie down". Concubine is a term used widely in historical and academic literature, and which varies considerably depending on the context. In the twenty-first century, it typically refers explicitly to extramarital affection, "either to a mistress or to a sex slave", without the same emphasis on the cohabiting aspect of the original meaning. Concubinage emerged as an English term in the late 14th century to mean the "state of being a concubine; act or practice of cohabiting in intimacy without legal marriage", and was derived from Latin by means of Old French, where the term may in turn have been derived from the Latin concubinatus, an institution in ancient Rome that meant "a permanent cohabitation between persons to whose marriage there were no legal obstacles". It has also been described more plainly as a long-term sexual relationship between a man and a woman who are not legally married. In pre-modern to modern law, concubinage has been used in certain jurisdictions to describe cohabitation, and in France, was formalized in 1999 as the French equivalent of a civil union. The US legal system also used to use the term in reference to cohabitation, but the term never evolved further and is now considered outdated. Forms of concubinage have existed in all cultures, though the prevalence of the practice and the rights and expectations of the persons involved have varied considerably, as have the rights of the offspring born from such relationships, a concubine's legal and social status, their role within a household and society's perceptions of the institution. A relationship of concubinage could take place voluntarily, with the parties involved agreeing not to enter into marriage, or involuntarily (i.e. through slavery). In slave-owning societies, most concubines were slaves, also called "slave-concubines". This institutionalization of concubinage with female slaves dates back to Babylonian times, and has been practiced in patriarchal cultures throughout history. Whatever the status and rights of the persons involved, they were typically inferior to those of a legitimate spouse, often with the rights of inheritance being limited or excluded. Concubinage and marriage are often regarded as similar but mutually exclusive. In the past, a couple may not have been able to marry because of differences in social class, ethnicity or religion, or a man might want to avoid the legal and financial complications of marriage. Practical impediments or social disincentives for a couple to marry could include differences in social rank status, an existing marriage and laws against bigamy, religious or professional prohibitions, or a lack of recognition by the appropriate authorities. The concubine in a concubinage tended to have a lower social status than the married party or home owner, and this was often the reason why concubinage was preferred to marriage. A concubine could be an "alien" in a society that did not recognize marriages between foreigners and citizens. Alternatively, they might be a slave, or person from a poor family interested in a union with a man from the nobility. In other cases, some social groups were forbidden to marry, such as Roman soldiers, and concubinage served as a viable alternative to marriage. In polygynous situations, the number of concubines there were permitted within an individual concubinage arrangement has varied greatly. In Roman Law, where monogamy was expected, the relationship was identical (and alternative) to marriage except for the lack of marital affection from both or one of the parties, which conferred rights related to property, inheritance and social rank. By contrast, in parts of Asia and the Middle East, powerful men kept as many concubines as they could financially support. Some royal households had thousands of concubines. In such cases concubinage served as a status symbol and for the production of sons. In societies that accepted polygyny, there were advantages to having a concubine over a mistress, as children from a concubine were legitimate, while children from a mistress would be considered "bastards". Scholars have made attempts to categorize various patterns of concubinage practiced in the world. The International Encyclopedia of Anthropology gives four distinct forms of concubinage: Junius P. Rodriguez gives three cultural patterns of concubinage: Asian, Islamic and European. In Mesopotamia, it was customary for a sterile wife to give her husband a slave as a concubine to bear children. The status of such concubines was ambiguous; they normally could not be sold but they remained the slave of the wife. However, in the late Babylonian period, there are reports that concubines could be sold. In general, marriage was monogamous. "If after two or three years of marriage the wife had not given birth to any children, the husband was allowed to buy a slave (who could also be chosen by the wife) in order to produce heirs. This woman, however, remained a slave and never gained the status of a second wife." In the Middle Assyrian Period, the main wife (assatu) wore a veil in the street, as could a concubine (esirtu) if she were accompanying the main wife, or if she were married. "If a man veils his concubine in public, by declaring 'she is my wife,' this woman shall be his wife." It was illegal for unmarried women, prostitutes and slave women to wear a veil in the street. "The children of a concubine were lower in rank than the descendants of a wife, but they could inherit if the marriage of the latter remained childless." While most Ancient Egyptians were monogamous, a male pharaoh would have had other, lesser wives and concubines in addition to the Great Royal Wife. This arrangement would allow the pharaoh to enter into diplomatic marriages with the daughters of allies, as was the custom of ancient kings. Concubinage was a common occupation for women in ancient Egypt, especially for talented women. A request for forty concubines by Amenhotep III (c. 1386–1353 BC) to a man named Milkilu, Prince of Gezer states: "Behold, I have sent you Hanya, the commissioner of the archers, with merchandise in order to have beautiful concubines, i.e. weavers. Silver, gold, garments, all sort of precious stones, chairs of ebony, as well as all good things, worth 160 deben. In total: forty concubines—the price of every concubine is forty of silver. Therefore, send very beautiful concubines without blemish." — (Lewis, 146) Concubines would be kept in the pharaoh's harem. Amenhotep III kept his concubines in his palace at Malkata, which was one of the most opulent in the history of Egypt. The king was considered to be deserving of many women as long as he cared for his Great Royal Wife as well. In Ancient Greece the practice of keeping a concubine (Ancient Greek: παλλακίς pallakís) was common among the upper classes, and they were for the most part women who were slaves or foreigners, but occasional free born based on family arrangements (typically from poor families). Children produced by slaves remained slaves and those by non-slave concubines varied over time; sometimes they had the possibility of citizenship. The law prescribed that a man could kill another man caught attempting a relationship with his concubine. By the mid fourth century concubines could inherit property, but, like wives, they were treated as sexual property. While references to the sexual exploitation of maidservants appear in literature, it was considered disgraceful for a man to keep such women under the same roof as his wife. Apollodorus of Acharnae said that hetaera were concubines when they had a permanent relationship with a single man, but nonetheless used the two terms interchangeably. A concubinatus (Latin for "concubinage" – see also concubina, "concubine", considered milder than paelex, and concubinus, "bridegroom") was an institution of quasi-marriage between Roman citizens who for various reasons did not want to enter into a full marriage. The institution was often found in unbalanced couples, where one of the members belonged to a higher social class or where one of the two was freed and the other one was freeborn. However it differed from a contubernium, where at least one of the partners was a slave. The relationship between a free citizen and a slave or between slaves was known as contubernium. The term describes a wide range of situations, from simple sexual slavery to quasi-marriage. For instance, according to Suetonius, Caenis, a slave and secretary of Antonia Minor, was Vespasian's wife "in all but name", until her death in AD 74. It was also not uncommon for slaves to create family-like unions, allowed but not protected by the law. The law allowed a slave-owner to free the slave and enter into a concubinatus or a regular marriage. Concubinage was highly popular before the early 20th century all over East Asia. The main functions of concubinage for men was for pleasure and producing additional heirs, whereas for women the relationship could provide financial security. Children of concubines had lower rights in account to inheritance, which was regulated by the Dishu system. In places like China and the Muslim world, the concubine of a king could achieve power, especially if her son also became a monarch. In China, successful men often had concubines until the practice was outlawed when the Chinese Communist Party came to power in 1949. The standard Chinese term translated as "concubine" was qiè 妾, a term that has been used since ancient times. Concubinage resembled marriage in that concubines were recognized sexual partners of a man and were expected to bear children for him. Unofficial concubines (Chinese: 婢妾; pinyin: bì qiè) were of lower status, and their children were considered illegitimate. The English term concubine is also used for what the Chinese refer to as pínfēi (Chinese: 嬪妃), or "consorts of emperors", an official position often carrying a very high rank. In premodern China it was illegal and socially disreputable for a man to have more than one wife at a time, but it was acceptable to have concubines. From the earliest times wealthy men purchased concubines and added them to their household in addition to their wife. The purchase of concubine was similar to the purchase of a slave, yet concubines had a higher social status. In the earliest records a man could have as many concubines as he could afford to purchase. From the Eastern Han period (AD 25–220) onward, the number of concubines a man could have was limited by law. The higher rank and the more noble identity a man possessed, the more concubines he was permitted to have. A concubine's treatment and situation was variable and was influenced by the social status of the male to whom she was attached, as well as the attitude of his wife. In the Book of Rites chapter on "The Pattern of the Family" (Chinese: 內則) it says, "If there were betrothal rites, she became a wife; and if she went without these, a concubine." Wives brought a dowry to a relationship, but concubines did not. A concubinage relationship could be entered into without the ceremonies used in marriages, and neither remarriage nor a return to her natal home in widowhood were allowed to a concubine. There are early records of concubines allegedly being buried alive with their masters to "keep them company in the afterlife". The position of the concubine was generally inferior to that of the wife. Although a concubine could produce heirs, her children would be inferior in social status to a wife's children, although they were of higher status than illegitimate children. The child of a concubine had to show filial duty to two women, their biological mother and their legal mother—the wife of their father. After the death of a concubine, her sons would make an offering to her, but these offerings were not continued by the concubine's grandsons, who only made offerings to their grandfather's wife. Until the Song dynasty (960–1276), it was considered a serious breach of social ethics to promote a concubine to a wife. During the Qing dynasty (1644–1911), the status of concubines improved. It became permissible to promote a concubine to wife, if the original wife had died and the concubine was the mother of the only surviving sons. Moreover, the prohibition against forcing a widow to remarry was extended to widowed concubines. During this period tablets for concubine-mothers seem to have been more commonly placed in family ancestral altars, and genealogies of some lineages listed concubine-mothers. Many of the concubines of the emperor of the Qing dynasty were freeborn women from prominent families. Concubines of men of lower social status could be either freeborn or slave. Imperial concubines, kept by emperors in the Forbidden City, had different ranks and were traditionally guarded by eunuchs to ensure that they could not be impregnated by anyone but the emperor. In Ming China (1368–1644) there was an official system to select concubines for the emperor. The age of the candidates ranged mainly from 14 to 16. Virtues, behavior, character, appearance and body condition were the selection criteria. Despite the limitations imposed on Chinese concubines, there are several examples in history and literature of concubines who achieved great power and influence. Lady Yehenara, otherwise known as Empress Dowager Cixi, was one of the most successful concubines in Chinese history. Cixi first entered the court as a concubine to Xianfeng Emperor and gave birth to his only surviving son, who later became Tongzhi Emperor. She eventually became the de facto ruler of Qing China for 47 years after her husband's death. An examination of concubinage features in one of the Four Great Classical Novels, Dream of the Red Chamber (believed to be a semi-autobiographical account of author Cao Xueqin's family life). Three generations of the Jia family are supported by one notable concubine of the emperor, Jia Yuanchun, the full elder sister of the male protagonist Jia Baoyu. In contrast, their younger half-siblings by concubine Zhao, Jia Tanchun and Jia Huan, develop distorted personalities because they are the children of a concubine. Emperors' concubines and harems are emphasized in 21st-century romantic novels written for female readers and set in ancient times. As a plot element, the children of concubines are depicted with a status much inferior to that in actual history. The zhai dou (Chinese: 宅斗，residential intrigue) and gong dou (Chinese: 宫斗，harem intrigue) genres show concubines and wives, as well as their children, scheming secretly to gain power. Empresses in the Palace, a gong dou type novel and TV drama, has had great success in 21st-century China. Hong Kong officially abolished the Great Qing Legal Code in 1971, thereby making concubinage illegal. Casino magnate Stanley Ho of Macau took his "second wife" as his official concubine in 1957, while his "third and fourth wives" retain no official status. Polygyny and concubinage were very common in Mongol society, especially for powerful Mongol men. Genghis Khan, Ögedei Khan, Jochi, Tolui, and Kublai Khan (among others) all had many wives and concubines. Genghis Khan frequently acquired wives and concubines from empires and societies that he had conquered, these women were often princesses or queens that were taken captive or gifted to him. Genghis Khan's most famous concubine was Möge Khatun, who, according to the Persian historian Ata-Malik Juvayni, was "given to Chinggis Khan by a chief of the Bakrin tribe, and he loved her very much." After Genghis Khan died, Möge Khatun became a wife of Ögedei Khan. Ögedei also favored her as a wife, and she frequently accompanied him on his hunting expeditions. Before monogamy was legally imposed in the Meiji period, concubinage was common among the nobility. Its purpose was to ensure male heirs. For example, the son of an Imperial concubine often had a chance of becoming emperor. Yanagihara Naruko, a high-ranking concubine of Emperor Meiji, gave birth to Emperor Taishō, who was later legally adopted by Empress Haruko, Emperor Meiji's formal wife. Even among merchant families, concubinage was occasionally used to ensure heirs. Asako Hirooka, an entrepreneur who was the daughter of a concubine, worked hard to help her husband's family survive after the Meiji Restoration. She lost her fertility giving birth to her only daughter, Kameko; so her husband—with whom she got along well—took Asako's maid-servant as a concubine and fathered three daughters and a son with her. Kameko, as the child of the formal wife, married a noble man and matrilineally carried on the family name. A samurai could take concubines but their backgrounds were checked by higher-ranked samurai. In many cases, taking a concubine was akin to a marriage. Kidnapping a concubine, although common in fiction, would have been shameful, if not criminal. If the concubine was a commoner, a messenger was sent with betrothal money or a note for exemption of tax to ask for her parents' acceptance. Even though the woman would not be a legal wife, a situation normally considered a demotion, many wealthy merchants believed that being the concubine of a samurai was superior to being the legal wife of a commoner. When a merchant's daughter married a samurai, her family's money erased the samurai's debts, and the samurai's social status improved the standing of the merchant family. If a samurai's commoner concubine gave birth to a son, the son could inherit his father's social status. Concubines sometimes wielded significant influence. Nene, wife of Toyotomi Hideyoshi, was known to overrule her husband's decisions at times and Yodo-dono, his concubine, became the de facto master of Osaka castle and the Toyotomi clan after Hideyoshi's death. Joseon monarchs had a harem which contained concubines of different ranks. Empress Myeongseong managed to have sons, preventing sons of concubines from getting power. Children of concubines often had lower value in account of marriage. A daughter of concubine could not marry a wife-born son of the same class. For example, Jang Nok-su was a concubine-born daughter of a mayor, who was initially married to a slave-servant, and later became a high-ranking concubine of Yeonsangun. The Joseon dynasty established in 1392 debated whether the children of a free parent and a slave parent should be considered free or slave. The child of a scholar-official father and a slave-concubine mother was always free, although the child could not occupy government positions. In Hindu society, concubinage was practiced with women with whom marriage was undesirable, such as a woman from a lower-caste or a non-Hindu woman. Children born of concubinage followed the caste categorization of the mother. In medieval Rajasthan, the ruling Rajput family often had certain women called paswan, khawaas, pardayat. These women were kept by ruler if their beauty had impressed him, but without formal marriage. Sometimes they were given rights to income collected from a particular village, as queens did. Their children were socially accepted but did not receive a share in the ruling family's property and married others of the same status as them. Concubinage was practiced in elite Rajput households between 16th and 20th centuries. Female slave-servants or slave-performers could be elevated to the rank of concubine (called khavas, pavas) if a ruler found them attractive. The entry into concubinage was marked by a ritual; however, this ritual differentiated from rituals marking marriage. Rajputs did not take concubines from the untouchable castes and refrained from taking Charans, Brahmins, and other Rajputs. There are instances of wife's eloping with their Rajput lovers and becoming their concubines. Polygyny was common among Vikings, and rich and powerful Viking men tended to have many wives and concubines. Viking men would often buy or capture women and make them into their wives or concubines. Concubinage for Vikings was connected to slavery; the Vikings took both free women and slaves as concubines. Researchers have suggested that Vikings may have originally started sailing and raiding due to a need to seek out women from foreign lands. Polygynous relationships in Viking society may have led to a shortage of eligible women for the average male; polygyny increases male–male competition in society because it creates a pool of unmarried men willing to engage in risky status-elevating and sex-seeking behaviors. Thus, the average Viking man could have been forced to perform riskier actions to gain wealth and power to be able to find suitable women. The concept was expressed in the 11th century by historian Dudo of Saint-Quentin in his semi imaginary History of The Normans. The Annals of Ulster depicts raptio and states that in 821 the Vikings plundered an Irish village and "carried off a great number of women into captivity". The Christian morals developed by Patristic writers largely promoted marriage as the only form of union between men and women. Both Saint Augustine and Saint Jerome strongly condemned the institution of concubinage. Emperor Justinian in his great sixth-century code, the Corpus Iurus Civilis, granted to concubines and their children the sorts of property and inheritance rights usually reserved for wives. He brought the institution of concubinatus closer to marriage, but he also repeated the Christian injunction that concubinage must be permanent and monogamous. The two views, Christian condemnation and secular continuity with the Roman legal system, continued to be in conflict throughout the entire Middle Ages, until in the 14th and 15th centuries the Church outlawed concubinage in the territories under its control. In the Medieval Muslim Arab world, "concubine" (surriyya) referred to the female slave (jāriya), whether Muslim or non-Muslim, with whom her master engages in sexual intercourse in addition to household or other services. Such relationships were common in pre-Islamic Arabia and other pre-existing cultures of the wider region. Islam introduced legal restrictions and discipline to the concubinage and encouraged manumission. Islam furthermore endorsed educating, freeing or marrying female slaves if they embrace Islam abandoning polytheism or infidelity. In verse 23:6 in the Quran it is allowed to have sexual intercourse with concubines only after harmonizing rapport and relation with them. Children of concubines are generally declared as legitimate with or without wedlock, and the mother of a free child was considered free upon the death of the male partner. There is evidence that concubines had a higher rank than female slaves. Abu Hanifa and others argued for modesty-like practices for the concubine, recommending that the concubine be established in the home and their chastity be protected and not to misuse them for sale or sharing with friends or kins. While scholars exhorted masters to treat their slaves equally, a master was allowed to show favoritism towards a concubine. Some scholars recommended holding a wedding banquet (walima) to celebrate the concubinage relationship; however, this is not required in teachings of Islam and is rather the self-preferred opinions of certain non-liberal Islamic scholars. Even the Arabic term for concubine surriyya may have been derived from sarat meaning "eminence", indicating the concubine's higher status over other female slaves. The Qur'an does not use the word "surriyya", but instead uses the expression "Ma malakat aymanukum" (that which your right hands own), which occurs 15 times in the book. Sayyid Abul Ala Maududi explains that "two categories of women have been excluded from the general command of guarding the private parts: (a) wives, (b) women who are legally in one's possession". Some contend that concubinage was a pre-Islamic custom that was allowed to be practiced under Islam, with Jews and non-Muslim people to marry a concubine after teaching her, instructing her well and then giving her freedom. Others contend that concubines in Islam remained in use until the 19th century. In the traditions of the Abrahamic religions, Abraham had a concubine named Hagar, who was originally a slave of his wife Sarah. The story of Hagar would affect how concubinage was perceived in early Islamic history. Sikainiga writes that one rationale for concubinage in Islam was that "it satisfied the sexual desire of the female slaves and thereby prevented the spread of immorality in the Muslim community." Most Islamic schools of thought restricted concubinage to a relationship where the female slave was required to be monogamous to her master, (though the master's monogamy to her is not required), but according to Sikainga, in reality this was not always practiced and female slaves were targeted by other men of the master's household. These opinions of Sikaingia are controversial and contested. In ancient times, two sources for concubines were permitted under an Islamic regime. Primarily, women taken as prisoners of war become concubines after harmonizing rapport which happened after the Battle of the Trench, or in numerous later Caliphates. It was encouraged to manumit slave women who rejected their initial faith and embraced Islam, or to bring them into formal marriage. The expansion of various Muslim dynasties resulted in acquisitions of concubines, through purchase, gifts from other rulers, and captives of war. To have a large number of concubines became a symbol of status. Almost all Abbasid caliphs were born to concubines. Several Twelver Shia imams were also born to concubines. Similarly, the sultans of the Ottoman empire were often the son of a concubine. As a result, concubines came to exercise a degree of influence over Ottoman politics. Many concubines developed social networks, and accumulated personal wealth, both of which allowed them to rise on social status. The practice declined with the abolition of slavery, starting in the 19th century. Ottoman sultans appeared to have preferred concubinage to marriage, and for a time all royal children were born of concubines. The consorts of Ottoman sultans were often neither Turkish, nor Muslim by birth. Leslie Peirce argues that this was because a concubine would not have the political leverage that would be possessed by a princess or a daughter of the local elite. Ottoman sultans also appeared to have only one son with each concubine; that is once a concubine gave birth to a son, the sultan would no longer have intercourse with her. This limited the power of each son. When slavery became institutionalized in Colonial America, white men, whether or not they were married, sometimes took enslaved women as concubines; children of such unions remained slaves. In the various European colonies in the Caribbean, white planters took black and mulatto concubines, owing to the shortage of white women. The children of such unions were sometimes freed from slavery and even inherited from their father, though this was not the case for the majority of children born of such unions. These relationships appeared to have been socially accepted in the colony of Jamaica and even attracted European emigrants to the island. In colonial Brazil, men were expected to marry women who were equal to them in status and wealth. Alternatively, some men practiced concubinage, an extra-marital sexual relationship. This sort of relationship was condemned by the Catholic Church and the Council of Trent threatened those who engaged in it with excommunication. Concubines constituted both female slaves and former slaves. One reason for taking non-white women as concubines was that free white men outnumbered free white women, although marriage between races was not illegal. Some French settlers in New France were recorded to keep native women as "concubines," sometimes while being married to a white woman. This was particularly common in Louisiana, but was discouraged by the clergy. Relationships with slaves in the United States and the Confederacy were sometimes euphemistically referred to as concubinary. From lifelong to single or serial sexual visitations, these relationships with enslaved people illustrate a radical power imbalance between a human owned as chattel and the legal owner of same. When personal ownership of slaves was enshrined in the law, an enslaved person had no legal power over their own legal personhood, the legal control to which was held by another entity; therefore, a slave could never give real and legal consent in any aspect of their life. The inability to give any kind of consent when enslaved is in part due to the ability of a slave master to legally coerce acts and declarations including those of affection, attraction, and consent through rewards and punishments, but legally the concept of chattel slavery in the United States and Confederate States defined and enforced in the law owning the legal personhood of a slave; meaning that the proxy for legal consent was found with the slave's master, who was the sole source of consent in the law to the bodily integrity and all efforts of that slave except as regulated or limited by law. With slavery being recognized as a crime against humanity in the United States law, as well as in international customary law, the legal basis of slavery is repudiated for all time and therefore repudiates any rights of owner-rapists had had to exercise any proxy sexual or other consent for their slaves. Free men in the United States sometimes took female slaves in relationships which they referred to as concubinage, although marriage between the races was prohibited by law in the colonies and the later United States. Many colonies and states also had laws against miscegenation or any interracial relations. From 1662 the Colony of Virginia, followed by others, incorporated into law the principle that children took their mother's status, i.e., the principle of partus sequitur ventrem. This led to generations of multiracial slaves, some of whom were otherwise considered legally white (one-eighth or less African, equivalent to a great-grandparent) before the American Civil War. In some cases, men had long-term relationships with enslaved women, giving them and their mixed-race children freedom and providing their children with apprenticeships, education and transfer of capital. A relationship between Thomas Jefferson and Sally Hemings is an example of this. Such arrangements were more prevalent in the American South during the antebellum period. In Louisiana and former French territories, a formalized system of concubinage called plaçage developed. European men took enslaved or free women of color as mistresses after making arrangements to give them a dowry, house or other transfer of property, and sometimes, if they were enslaved, offering freedom and education for their children. A third class of free people of color developed, especially in New Orleans. Many became educated, artisans and property owners. French-speaking and practicing Catholicism, these women combined French and African-American culture and created an elite between those of European descent and the slaves. Today, descendants of the free people of color are generally called Louisiana Creole people. In Judaism, a concubine is a marital companion of inferior status to a wife. Among the Israelites, men commonly acknowledged their concubines, and such women enjoyed the same rights in the house as legitimate wives. The term concubine did not necessarily refer to women after the first wife. A man could have many wives and concubines. Legally, any children born to a concubine were considered to be the children of the wife she was under. Sarah had to get Ishmael (son of Hagar) out of her house because, legally, Ishmael would always be the first-born son even though Isaac was her natural child. The concubine may not have commanded the exact amount of respect as the wife. In the Levitical rules on sexual relations, the Hebrew word that is commonly translated as "wife" is distinct from the Hebrew word that means "concubine". However, on at least one other occasion the term is used to refer to a woman who is not a wife – specifically, the handmaiden of Jacob's wife. In the Levitical code, sexual intercourse between a man and a wife of a different man was forbidden and punishable by death for both persons involved. Since it was regarded as the highest blessing to have many children, wives often gave their maids to their husbands if they were barren, as in the cases of Sarah and Hagar, and Rachel and Bilhah. The children of the concubine often had equal rights with those of the wife; for example, King Abimelech was the son of Gideon and his concubine. Later biblical figures, such as Gideon and Solomon, had concubines in addition to many childbearing wives. For example, the Books of Kings say that Solomon had 700 wives and 300 concubines. The account of the unnamed Levite in Judges 19–20 shows that the taking of concubines was not the exclusive preserve of kings or patriarchs in Israel during the time of the Judges, and that the rape of a concubine was completely unacceptable to the Israelite nation and led to a civil war. In the story, the Levite appears to be an ordinary member of the tribe, whose concubine was a woman from Bethlehem in Judah. This woman was unfaithful, and eventually abandoned him to return to her paternal household. However, after four months, the Levite, referred to as her husband, decided to travel to her father's house to persuade his concubine to return. She is amenable to returning with him, and the father-in-law is very welcoming. The father-in-law convinces the Levite to remain several additional days, until the party leaves behind schedule in the late evening. The group pass up a nearby non-Israelite town to arrive very late in the city of Gibeah, which is in the land of the Benjaminites. The group sit around the town square, waiting for a local to invite them in for the evening, as was the custom for travelers. A local old man invites them to stay in his home, offering them guest right by washing their feet and offering them food. A band of wicked townsmen attack the house and demand the host send out the Levite man so they can rape him. The host offers to send out his virgin daughter as well as the Levite's concubine for them to rape, to avoid breaking guest right towards the Levite. Eventually, to ensure his own safety and that of his host, the Levite gives the men his concubine, who is raped and abused through the night, until she is left collapsed against the front door at dawn. In the morning, the Levite finds her when he tries to leave. When she fails to respond to her husband's order to get up (possibly because she is dead, although the language is unclear) the Levite places her on his donkey and continues home. Once home, he dismembers her body and distributes the 12 parts throughout the nation of Israel. The Israelites gather to learn why they were sent such grisly gifts, and are told by the Levite of the sadistic rape of his concubine. The crime is considered outrageous by the Israelite tribesmen, who then wreak total retribution on the men of Gibeah, as well as the surrounding tribe of Benjamin when they support the Gibeans, killing them without mercy and burning all their towns. The inhabitants of (the town of) Jabesh Gilead are then slaughtered as a punishment for not joining the 11 tribes in their war against the Benjaminites, and their 400 unmarried daughters given in forced marriage to the 600 Benjamite survivors. Finally, the 200 Benjaminite survivors who still have no wives are granted a mass marriage by abduction by the other tribes. In Judaism, concubines are referred to by the Hebrew term pilegesh (Hebrew: פילגש). The term is a loanword from Ancient Greek παλλακίς, meaning "a mistress staying in house". According to the Babylonian Talmud, the difference between a concubine and a legitimate wife was that the latter received a ketubah and her marriage (nissu'in) was preceded by an erusin ("formal betrothal"), which was not the case for a concubine. One opinion in the Jerusalem Talmud argues that the concubine should also receive a marriage contract, but without a clause specifying a divorce settlement. According to Rashi, "wives with kiddushin and ketubbah, concubines with kiddushin but without ketubbah"; this reading is from the Jerusalem Talmud, Certain Jewish thinkers, such as Maimonides, believed that concubines were strictly reserved for royal leadership and thus that a commoner may not have a concubine. Indeed, such thinkers argued that commoners may not engage in any type of sexual relations outside of a marriage. Maimonides was not the first Jewish thinker to criticise concubinage. For example, Leviticus Rabbah severely condemns the custom. Other Jewish thinkers, such as Nahmanides, Samuel ben Uri Shraga Phoebus, and Jacob Emden, strongly objected to the idea that concubines should be forbidden. Despite these prohibitions, concubinage remained widespread among Jewish households of the Ottoman empire and resembled the practice among the Muslim households. In the Hebrew of the contemporary State of Israel, pilegesh is often used as the equivalent of the English word "mistress"—i.e., the female partner in extramarital relations—regardless of legal recognition. Attempts have been initiated to popularise pilegesh as a form of premarital, non-marital or extramarital relationship (which, according to the perspective of the enacting person(s), is permitted by Jewish law). In some context, the institution of concubinage diverged from a free quasi-marital cohabitation to the extent that it was forbidden to a free woman to be involved in a concubinage and the institution was reserved only to slaves. This type of concubinage was practiced in patriarchal cultures throughout history. Many societies automatically freed the concubine after she had a child. According to one study, this was the case in about one-third of slave-holding societies, the most prominent being case of the Muslim world. Among societies that did not legally require the manumission of concubines, it was usually done anyway. In slave-owning societies, most concubines were slaves, but not all. The feature about concubinage that made it attractive to certain men was that the concubine was dependent on the man - she could be sold or punished at the master's will. According to Orlando Peterson, slaves taken as concubines would have had a higher level of material comfort than the slaves used in agriculture or in mining.	[ { "paragraph_id": 0, "text": "Concubinage is an interpersonal and sexual relationship between two people in which the couple does not want, or cannot, enter into a full marriage. Concubinage and marriage are often regarded as similar, but mutually exclusive.", "title": "" }, { "paragraph_id": 1, "text": "Concubinage was a formal and institutionalized practice in China until the 20th century that upheld concubines' rights and obligations. A concubine could be freeborn or of slave origin, and her experience could vary tremendously according to her master's whim. During the Mongol conquests, both foreign royals and captured women were taken as concubines. Concubinage was also common in Meiji Japan as a status symbol, and in Indian society, where the intermingling of different social groups and religions was frowned upon and a taboo, and concubinage could be practiced with women with whom marriage was considered undesirable.", "title": "" }, { "paragraph_id": 2, "text": "Many Middle Eastern societies used concubinage for reproduction. The practice of a barren wife giving her husband a slave as a concubine is recorded in the Code of Hammurabi and the Bible, where Abraham takes Hagar as pilegesh. The children of such relationships would be regarded as legitimate. Such concubinage was also widely practiced in the premodern Muslim world, and many of the rulers of the Abbasid caliphate and the Ottoman Empire were born out of such relationships. Throughout Africa, from Egypt to South Africa, slave concubinage resulted in racially mixed populations. The practice declined as a result of the abolition of slavery.", "title": "" }, { "paragraph_id": 3, "text": "In ancient Rome, the practice was formalized as concubinatus, the Latin term from which the English \"concubine\" is derived. It referred to any extramarital sexual relationship, most often that between a wealthy or politically powerful man and a woman of low social origins kept for sexual service. The marital status of the man was irrelevant and the concubine's children did not receive an inheritance. After Christianization of Roman Empire, Christian emperors improved the status of the concubine by granting concubines and their children the sorts of property and inheritance rights usually reserved for wives. In European colonies and American slave plantations, single and married men entered into long-term sexual relationships with local women. In the Dutch East Indies, concubinage created mixed-race Indo-European communities.", "title": "" }, { "paragraph_id": 4, "text": "In the Judeo-Christian world, the term concubine has almost exclusively been applied to women, although a cohabiting male may also be called a concubine. In the 21st century, concubinage is used in some Western countries as a gender-neutral legal term to refer to cohabitation (including cohabitation between same-sex partners).", "title": "" }, { "paragraph_id": 5, "text": "The English terms \"concubine\" and \"concubinage\" appeared in the 14th century, deriving from Latin terms in Roman society and law. The term concubine (c. 1300), meaning \"a paramour, a woman who cohabits with a man without being married to him\", comes from the Latin concubina (f.) and concubinus (m.), terms that in Roman law meant \"one who lives unmarried with a married man or woman\". The Latin terms are derived from the verb from concumbere \"to lie with, to lie together, to cohabit,\" an assimilation of \"com\", a prefix meaning \"with, together\" and \"cubare\", meaning \"to lie down\". Concubine is a term used widely in historical and academic literature, and which varies considerably depending on the context. In the twenty-first century, it typically refers explicitly to extramarital affection, \"either to a mistress or to a sex slave\", without the same emphasis on the cohabiting aspect of the original meaning.", "title": "Etymology and usage" }, { "paragraph_id": 6, "text": "Concubinage emerged as an English term in the late 14th century to mean the \"state of being a concubine; act or practice of cohabiting in intimacy without legal marriage\", and was derived from Latin by means of Old French, where the term may in turn have been derived from the Latin concubinatus, an institution in ancient Rome that meant \"a permanent cohabitation between persons to whose marriage there were no legal obstacles\". It has also been described more plainly as a long-term sexual relationship between a man and a woman who are not legally married. In pre-modern to modern law, concubinage has been used in certain jurisdictions to describe cohabitation, and in France, was formalized in 1999 as the French equivalent of a civil union. The US legal system also used to use the term in reference to cohabitation, but the term never evolved further and is now considered outdated.", "title": "Etymology and usage" }, { "paragraph_id": 7, "text": "Forms of concubinage have existed in all cultures, though the prevalence of the practice and the rights and expectations of the persons involved have varied considerably, as have the rights of the offspring born from such relationships, a concubine's legal and social status, their role within a household and society's perceptions of the institution. A relationship of concubinage could take place voluntarily, with the parties involved agreeing not to enter into marriage, or involuntarily (i.e. through slavery). In slave-owning societies, most concubines were slaves, also called \"slave-concubines\". This institutionalization of concubinage with female slaves dates back to Babylonian times, and has been practiced in patriarchal cultures throughout history. Whatever the status and rights of the persons involved, they were typically inferior to those of a legitimate spouse, often with the rights of inheritance being limited or excluded.", "title": "Characteristics" }, { "paragraph_id": 8, "text": "Concubinage and marriage are often regarded as similar but mutually exclusive. In the past, a couple may not have been able to marry because of differences in social class, ethnicity or religion, or a man might want to avoid the legal and financial complications of marriage. Practical impediments or social disincentives for a couple to marry could include differences in social rank status, an existing marriage and laws against bigamy, religious or professional prohibitions, or a lack of recognition by the appropriate authorities.", "title": "Characteristics" }, { "paragraph_id": 9, "text": "The concubine in a concubinage tended to have a lower social status than the married party or home owner, and this was often the reason why concubinage was preferred to marriage. A concubine could be an \"alien\" in a society that did not recognize marriages between foreigners and citizens. Alternatively, they might be a slave, or person from a poor family interested in a union with a man from the nobility. In other cases, some social groups were forbidden to marry, such as Roman soldiers, and concubinage served as a viable alternative to marriage.", "title": "Characteristics" }, { "paragraph_id": 10, "text": "In polygynous situations, the number of concubines there were permitted within an individual concubinage arrangement has varied greatly. In Roman Law, where monogamy was expected, the relationship was identical (and alternative) to marriage except for the lack of marital affection from both or one of the parties, which conferred rights related to property, inheritance and social rank. By contrast, in parts of Asia and the Middle East, powerful men kept as many concubines as they could financially support. Some royal households had thousands of concubines. In such cases concubinage served as a status symbol and for the production of sons. In societies that accepted polygyny, there were advantages to having a concubine over a mistress, as children from a concubine were legitimate, while children from a mistress would be considered \"bastards\".", "title": "Characteristics" }, { "paragraph_id": 11, "text": "Scholars have made attempts to categorize various patterns of concubinage practiced in the world.", "title": "Categorization" }, { "paragraph_id": 12, "text": "The International Encyclopedia of Anthropology gives four distinct forms of concubinage:", "title": "Categorization" }, { "paragraph_id": 13, "text": "Junius P. Rodriguez gives three cultural patterns of concubinage: Asian, Islamic and European.", "title": "Categorization" }, { "paragraph_id": 14, "text": "In Mesopotamia, it was customary for a sterile wife to give her husband a slave as a concubine to bear children. The status of such concubines was ambiguous; they normally could not be sold but they remained the slave of the wife. However, in the late Babylonian period, there are reports that concubines could be sold.", "title": "Antiquity" }, { "paragraph_id": 15, "text": "In general, marriage was monogamous. \"If after two or three years of marriage the wife had not given birth to any children, the husband was allowed to buy a slave (who could also be chosen by the wife) in order to produce heirs. This woman, however, remained a slave and never gained the status of a second wife.\"", "title": "Antiquity" }, { "paragraph_id": 16, "text": "In the Middle Assyrian Period, the main wife (assatu) wore a veil in the street, as could a concubine (esirtu) if she were accompanying the main wife, or if she were married. \"If a man veils his concubine in public, by declaring 'she is my wife,' this woman shall be his wife.\" It was illegal for unmarried women, prostitutes and slave women to wear a veil in the street. \"The children of a concubine were lower in rank than the descendants of a wife, but they could inherit if the marriage of the latter remained childless.\"", "title": "Antiquity" }, { "paragraph_id": 17, "text": "While most Ancient Egyptians were monogamous, a male pharaoh would have had other, lesser wives and concubines in addition to the Great Royal Wife. This arrangement would allow the pharaoh to enter into diplomatic marriages with the daughters of allies, as was the custom of ancient kings. Concubinage was a common occupation for women in ancient Egypt, especially for talented women. A request for forty concubines by Amenhotep III (c. 1386–1353 BC) to a man named Milkilu, Prince of Gezer states:", "title": "Antiquity" }, { "paragraph_id": 18, "text": "\"Behold, I have sent you Hanya, the commissioner of the archers, with merchandise in order to have beautiful concubines, i.e. weavers. Silver, gold, garments, all sort of precious stones, chairs of ebony, as well as all good things, worth 160 deben. In total: forty concubines—the price of every concubine is forty of silver. Therefore, send very beautiful concubines without blemish.\" — (Lewis, 146)", "title": "Antiquity" }, { "paragraph_id": 19, "text": "Concubines would be kept in the pharaoh's harem. Amenhotep III kept his concubines in his palace at Malkata, which was one of the most opulent in the history of Egypt. The king was considered to be deserving of many women as long as he cared for his Great Royal Wife as well.", "title": "Antiquity" }, { "paragraph_id": 20, "text": "In Ancient Greece the practice of keeping a concubine (Ancient Greek: παλλακίς pallakís) was common among the upper classes, and they were for the most part women who were slaves or foreigners, but occasional free born based on family arrangements (typically from poor families). Children produced by slaves remained slaves and those by non-slave concubines varied over time; sometimes they had the possibility of citizenship. The law prescribed that a man could kill another man caught attempting a relationship with his concubine. By the mid fourth century concubines could inherit property, but, like wives, they were treated as sexual property. While references to the sexual exploitation of maidservants appear in literature, it was considered disgraceful for a man to keep such women under the same roof as his wife. Apollodorus of Acharnae said that hetaera were concubines when they had a permanent relationship with a single man, but nonetheless used the two terms interchangeably.", "title": "Antiquity" }, { "paragraph_id": 21, "text": "A concubinatus (Latin for \"concubinage\" – see also concubina, \"concubine\", considered milder than paelex, and concubinus, \"bridegroom\") was an institution of quasi-marriage between Roman citizens who for various reasons did not want to enter into a full marriage. The institution was often found in unbalanced couples, where one of the members belonged to a higher social class or where one of the two was freed and the other one was freeborn. However it differed from a contubernium, where at least one of the partners was a slave.", "title": "Antiquity" }, { "paragraph_id": 22, "text": "The relationship between a free citizen and a slave or between slaves was known as contubernium. The term describes a wide range of situations, from simple sexual slavery to quasi-marriage. For instance, according to Suetonius, Caenis, a slave and secretary of Antonia Minor, was Vespasian's wife \"in all but name\", until her death in AD 74. It was also not uncommon for slaves to create family-like unions, allowed but not protected by the law. The law allowed a slave-owner to free the slave and enter into a concubinatus or a regular marriage.", "title": "Antiquity" }, { "paragraph_id": 23, "text": "Concubinage was highly popular before the early 20th century all over East Asia. The main functions of concubinage for men was for pleasure and producing additional heirs, whereas for women the relationship could provide financial security. Children of concubines had lower rights in account to inheritance, which was regulated by the Dishu system.", "title": "Asia" }, { "paragraph_id": 24, "text": "In places like China and the Muslim world, the concubine of a king could achieve power, especially if her son also became a monarch.", "title": "Asia" }, { "paragraph_id": 25, "text": "In China, successful men often had concubines until the practice was outlawed when the Chinese Communist Party came to power in 1949. The standard Chinese term translated as \"concubine\" was qiè 妾, a term that has been used since ancient times. Concubinage resembled marriage in that concubines were recognized sexual partners of a man and were expected to bear children for him. Unofficial concubines (Chinese: 婢妾; pinyin: bì qiè) were of lower status, and their children were considered illegitimate. The English term concubine is also used for what the Chinese refer to as pínfēi (Chinese: 嬪妃), or \"consorts of emperors\", an official position often carrying a very high rank.", "title": "Asia" }, { "paragraph_id": 26, "text": "In premodern China it was illegal and socially disreputable for a man to have more than one wife at a time, but it was acceptable to have concubines. From the earliest times wealthy men purchased concubines and added them to their household in addition to their wife. The purchase of concubine was similar to the purchase of a slave, yet concubines had a higher social status.", "title": "Asia" }, { "paragraph_id": 27, "text": "In the earliest records a man could have as many concubines as he could afford to purchase. From the Eastern Han period (AD 25–220) onward, the number of concubines a man could have was limited by law. The higher rank and the more noble identity a man possessed, the more concubines he was permitted to have. A concubine's treatment and situation was variable and was influenced by the social status of the male to whom she was attached, as well as the attitude of his wife. In the Book of Rites chapter on \"The Pattern of the Family\" (Chinese: 內則) it says, \"If there were betrothal rites, she became a wife; and if she went without these, a concubine.\" Wives brought a dowry to a relationship, but concubines did not. A concubinage relationship could be entered into without the ceremonies used in marriages, and neither remarriage nor a return to her natal home in widowhood were allowed to a concubine. There are early records of concubines allegedly being buried alive with their masters to \"keep them company in the afterlife\".", "title": "Asia" }, { "paragraph_id": 28, "text": "The position of the concubine was generally inferior to that of the wife. Although a concubine could produce heirs, her children would be inferior in social status to a wife's children, although they were of higher status than illegitimate children. The child of a concubine had to show filial duty to two women, their biological mother and their legal mother—the wife of their father. After the death of a concubine, her sons would make an offering to her, but these offerings were not continued by the concubine's grandsons, who only made offerings to their grandfather's wife.", "title": "Asia" }, { "paragraph_id": 29, "text": "Until the Song dynasty (960–1276), it was considered a serious breach of social ethics to promote a concubine to a wife. During the Qing dynasty (1644–1911), the status of concubines improved. It became permissible to promote a concubine to wife, if the original wife had died and the concubine was the mother of the only surviving sons. Moreover, the prohibition against forcing a widow to remarry was extended to widowed concubines. During this period tablets for concubine-mothers seem to have been more commonly placed in family ancestral altars, and genealogies of some lineages listed concubine-mothers. Many of the concubines of the emperor of the Qing dynasty were freeborn women from prominent families. Concubines of men of lower social status could be either freeborn or slave.", "title": "Asia" }, { "paragraph_id": 30, "text": "Imperial concubines, kept by emperors in the Forbidden City, had different ranks and were traditionally guarded by eunuchs to ensure that they could not be impregnated by anyone but the emperor. In Ming China (1368–1644) there was an official system to select concubines for the emperor. The age of the candidates ranged mainly from 14 to 16. Virtues, behavior, character, appearance and body condition were the selection criteria.", "title": "Asia" }, { "paragraph_id": 31, "text": "Despite the limitations imposed on Chinese concubines, there are several examples in history and literature of concubines who achieved great power and influence. Lady Yehenara, otherwise known as Empress Dowager Cixi, was one of the most successful concubines in Chinese history. Cixi first entered the court as a concubine to Xianfeng Emperor and gave birth to his only surviving son, who later became Tongzhi Emperor. She eventually became the de facto ruler of Qing China for 47 years after her husband's death.", "title": "Asia" }, { "paragraph_id": 32, "text": "An examination of concubinage features in one of the Four Great Classical Novels, Dream of the Red Chamber (believed to be a semi-autobiographical account of author Cao Xueqin's family life). Three generations of the Jia family are supported by one notable concubine of the emperor, Jia Yuanchun, the full elder sister of the male protagonist Jia Baoyu. In contrast, their younger half-siblings by concubine Zhao, Jia Tanchun and Jia Huan, develop distorted personalities because they are the children of a concubine.", "title": "Asia" }, { "paragraph_id": 33, "text": "Emperors' concubines and harems are emphasized in 21st-century romantic novels written for female readers and set in ancient times. As a plot element, the children of concubines are depicted with a status much inferior to that in actual history. The zhai dou (Chinese: 宅斗，residential intrigue) and gong dou (Chinese: 宫斗，harem intrigue) genres show concubines and wives, as well as their children, scheming secretly to gain power. Empresses in the Palace, a gong dou type novel and TV drama, has had great success in 21st-century China.", "title": "Asia" }, { "paragraph_id": 34, "text": "Hong Kong officially abolished the Great Qing Legal Code in 1971, thereby making concubinage illegal. Casino magnate Stanley Ho of Macau took his \"second wife\" as his official concubine in 1957, while his \"third and fourth wives\" retain no official status.", "title": "Asia" }, { "paragraph_id": 35, "text": "Polygyny and concubinage were very common in Mongol society, especially for powerful Mongol men. Genghis Khan, Ögedei Khan, Jochi, Tolui, and Kublai Khan (among others) all had many wives and concubines.", "title": "Asia" }, { "paragraph_id": 36, "text": "Genghis Khan frequently acquired wives and concubines from empires and societies that he had conquered, these women were often princesses or queens that were taken captive or gifted to him. Genghis Khan's most famous concubine was Möge Khatun, who, according to the Persian historian Ata-Malik Juvayni, was \"given to Chinggis Khan by a chief of the Bakrin tribe, and he loved her very much.\" After Genghis Khan died, Möge Khatun became a wife of Ögedei Khan. Ögedei also favored her as a wife, and she frequently accompanied him on his hunting expeditions.", "title": "Asia" }, { "paragraph_id": 37, "text": "Before monogamy was legally imposed in the Meiji period, concubinage was common among the nobility. Its purpose was to ensure male heirs. For example, the son of an Imperial concubine often had a chance of becoming emperor. Yanagihara Naruko, a high-ranking concubine of Emperor Meiji, gave birth to Emperor Taishō, who was later legally adopted by Empress Haruko, Emperor Meiji's formal wife. Even among merchant families, concubinage was occasionally used to ensure heirs. Asako Hirooka, an entrepreneur who was the daughter of a concubine, worked hard to help her husband's family survive after the Meiji Restoration. She lost her fertility giving birth to her only daughter, Kameko; so her husband—with whom she got along well—took Asako's maid-servant as a concubine and fathered three daughters and a son with her. Kameko, as the child of the formal wife, married a noble man and matrilineally carried on the family name.", "title": "Asia" }, { "paragraph_id": 38, "text": "A samurai could take concubines but their backgrounds were checked by higher-ranked samurai. In many cases, taking a concubine was akin to a marriage. Kidnapping a concubine, although common in fiction, would have been shameful, if not criminal. If the concubine was a commoner, a messenger was sent with betrothal money or a note for exemption of tax to ask for her parents' acceptance. Even though the woman would not be a legal wife, a situation normally considered a demotion, many wealthy merchants believed that being the concubine of a samurai was superior to being the legal wife of a commoner. When a merchant's daughter married a samurai, her family's money erased the samurai's debts, and the samurai's social status improved the standing of the merchant family. If a samurai's commoner concubine gave birth to a son, the son could inherit his father's social status.", "title": "Asia" }, { "paragraph_id": 39, "text": "Concubines sometimes wielded significant influence. Nene, wife of Toyotomi Hideyoshi, was known to overrule her husband's decisions at times and Yodo-dono, his concubine, became the de facto master of Osaka castle and the Toyotomi clan after Hideyoshi's death.", "title": "Asia" }, { "paragraph_id": 40, "text": "Joseon monarchs had a harem which contained concubines of different ranks. Empress Myeongseong managed to have sons, preventing sons of concubines from getting power.", "title": "Asia" }, { "paragraph_id": 41, "text": "Children of concubines often had lower value in account of marriage. A daughter of concubine could not marry a wife-born son of the same class. For example, Jang Nok-su was a concubine-born daughter of a mayor, who was initially married to a slave-servant, and later became a high-ranking concubine of Yeonsangun.", "title": "Asia" }, { "paragraph_id": 42, "text": "The Joseon dynasty established in 1392 debated whether the children of a free parent and a slave parent should be considered free or slave. The child of a scholar-official father and a slave-concubine mother was always free, although the child could not occupy government positions.", "title": "Asia" }, { "paragraph_id": 43, "text": "In Hindu society, concubinage was practiced with women with whom marriage was undesirable, such as a woman from a lower-caste or a non-Hindu woman. Children born of concubinage followed the caste categorization of the mother.", "title": "Asia" }, { "paragraph_id": 44, "text": "In medieval Rajasthan, the ruling Rajput family often had certain women called paswan, khawaas, pardayat. These women were kept by ruler if their beauty had impressed him, but without formal marriage. Sometimes they were given rights to income collected from a particular village, as queens did. Their children were socially accepted but did not receive a share in the ruling family's property and married others of the same status as them.", "title": "Asia" }, { "paragraph_id": 45, "text": "Concubinage was practiced in elite Rajput households between 16th and 20th centuries. Female slave-servants or slave-performers could be elevated to the rank of concubine (called khavas, pavas) if a ruler found them attractive. The entry into concubinage was marked by a ritual; however, this ritual differentiated from rituals marking marriage. Rajputs did not take concubines from the untouchable castes and refrained from taking Charans, Brahmins, and other Rajputs. There are instances of wife's eloping with their Rajput lovers and becoming their concubines.", "title": "Asia" }, { "paragraph_id": 46, "text": "Polygyny was common among Vikings, and rich and powerful Viking men tended to have many wives and concubines. Viking men would often buy or capture women and make them into their wives or concubines. Concubinage for Vikings was connected to slavery; the Vikings took both free women and slaves as concubines. Researchers have suggested that Vikings may have originally started sailing and raiding due to a need to seek out women from foreign lands. Polygynous relationships in Viking society may have led to a shortage of eligible women for the average male; polygyny increases male–male competition in society because it creates a pool of unmarried men willing to engage in risky status-elevating and sex-seeking behaviors. Thus, the average Viking man could have been forced to perform riskier actions to gain wealth and power to be able to find suitable women. The concept was expressed in the 11th century by historian Dudo of Saint-Quentin in his semi imaginary History of The Normans. The Annals of Ulster depicts raptio and states that in 821 the Vikings plundered an Irish village and \"carried off a great number of women into captivity\".", "title": "Europe" }, { "paragraph_id": 47, "text": "The Christian morals developed by Patristic writers largely promoted marriage as the only form of union between men and women. Both Saint Augustine and Saint Jerome strongly condemned the institution of concubinage. Emperor Justinian in his great sixth-century code, the Corpus Iurus Civilis, granted to concubines and their children the sorts of property and inheritance rights usually reserved for wives. He brought the institution of concubinatus closer to marriage, but he also repeated the Christian injunction that concubinage must be permanent and monogamous.", "title": "Europe" }, { "paragraph_id": 48, "text": "The two views, Christian condemnation and secular continuity with the Roman legal system, continued to be in conflict throughout the entire Middle Ages, until in the 14th and 15th centuries the Church outlawed concubinage in the territories under its control.", "title": "Europe" }, { "paragraph_id": 49, "text": "In the Medieval Muslim Arab world, \"concubine\" (surriyya) referred to the female slave (jāriya), whether Muslim or non-Muslim, with whom her master engages in sexual intercourse in addition to household or other services. Such relationships were common in pre-Islamic Arabia and other pre-existing cultures of the wider region. Islam introduced legal restrictions and discipline to the concubinage and encouraged manumission. Islam furthermore endorsed educating, freeing or marrying female slaves if they embrace Islam abandoning polytheism or infidelity. In verse 23:6 in the Quran it is allowed to have sexual intercourse with concubines only after harmonizing rapport and relation with them. Children of concubines are generally declared as legitimate with or without wedlock, and the mother of a free child was considered free upon the death of the male partner. There is evidence that concubines had a higher rank than female slaves. Abu Hanifa and others argued for modesty-like practices for the concubine, recommending that the concubine be established in the home and their chastity be protected and not to misuse them for sale or sharing with friends or kins. While scholars exhorted masters to treat their slaves equally, a master was allowed to show favoritism towards a concubine. Some scholars recommended holding a wedding banquet (walima) to celebrate the concubinage relationship; however, this is not required in teachings of Islam and is rather the self-preferred opinions of certain non-liberal Islamic scholars. Even the Arabic term for concubine surriyya may have been derived from sarat meaning \"eminence\", indicating the concubine's higher status over other female slaves.", "title": "Middle East" }, { "paragraph_id": 50, "text": "The Qur'an does not use the word \"surriyya\", but instead uses the expression \"Ma malakat aymanukum\" (that which your right hands own), which occurs 15 times in the book. Sayyid Abul Ala Maududi explains that \"two categories of women have been excluded from the general command of guarding the private parts: (a) wives, (b) women who are legally in one's possession\".", "title": "Middle East" }, { "paragraph_id": 51, "text": "Some contend that concubinage was a pre-Islamic custom that was allowed to be practiced under Islam, with Jews and non-Muslim people to marry a concubine after teaching her, instructing her well and then giving her freedom. Others contend that concubines in Islam remained in use until the 19th century. In the traditions of the Abrahamic religions, Abraham had a concubine named Hagar, who was originally a slave of his wife Sarah. The story of Hagar would affect how concubinage was perceived in early Islamic history.", "title": "Middle East" }, { "paragraph_id": 52, "text": "Sikainiga writes that one rationale for concubinage in Islam was that \"it satisfied the sexual desire of the female slaves and thereby prevented the spread of immorality in the Muslim community.\" Most Islamic schools of thought restricted concubinage to a relationship where the female slave was required to be monogamous to her master, (though the master's monogamy to her is not required), but according to Sikainga, in reality this was not always practiced and female slaves were targeted by other men of the master's household. These opinions of Sikaingia are controversial and contested.", "title": "Middle East" }, { "paragraph_id": 53, "text": "In ancient times, two sources for concubines were permitted under an Islamic regime. Primarily, women taken as prisoners of war become concubines after harmonizing rapport which happened after the Battle of the Trench, or in numerous later Caliphates. It was encouraged to manumit slave women who rejected their initial faith and embraced Islam, or to bring them into formal marriage.", "title": "Middle East" }, { "paragraph_id": 54, "text": "The expansion of various Muslim dynasties resulted in acquisitions of concubines, through purchase, gifts from other rulers, and captives of war. To have a large number of concubines became a symbol of status. Almost all Abbasid caliphs were born to concubines. Several Twelver Shia imams were also born to concubines. Similarly, the sultans of the Ottoman empire were often the son of a concubine. As a result, concubines came to exercise a degree of influence over Ottoman politics. Many concubines developed social networks, and accumulated personal wealth, both of which allowed them to rise on social status. The practice declined with the abolition of slavery, starting in the 19th century.", "title": "Middle East" }, { "paragraph_id": 55, "text": "Ottoman sultans appeared to have preferred concubinage to marriage, and for a time all royal children were born of concubines. The consorts of Ottoman sultans were often neither Turkish, nor Muslim by birth. Leslie Peirce argues that this was because a concubine would not have the political leverage that would be possessed by a princess or a daughter of the local elite. Ottoman sultans also appeared to have only one son with each concubine; that is once a concubine gave birth to a son, the sultan would no longer have intercourse with her. This limited the power of each son.", "title": "Middle East" }, { "paragraph_id": 56, "text": "When slavery became institutionalized in Colonial America, white men, whether or not they were married, sometimes took enslaved women as concubines; children of such unions remained slaves.", "title": "New World" }, { "paragraph_id": 57, "text": "In the various European colonies in the Caribbean, white planters took black and mulatto concubines, owing to the shortage of white women. The children of such unions were sometimes freed from slavery and even inherited from their father, though this was not the case for the majority of children born of such unions. These relationships appeared to have been socially accepted in the colony of Jamaica and even attracted European emigrants to the island.", "title": "New World" }, { "paragraph_id": 58, "text": "In colonial Brazil, men were expected to marry women who were equal to them in status and wealth. Alternatively, some men practiced concubinage, an extra-marital sexual relationship. This sort of relationship was condemned by the Catholic Church and the Council of Trent threatened those who engaged in it with excommunication. Concubines constituted both female slaves and former slaves. One reason for taking non-white women as concubines was that free white men outnumbered free white women, although marriage between races was not illegal.", "title": "New World" }, { "paragraph_id": 59, "text": "Some French settlers in New France were recorded to keep native women as \"concubines,\" sometimes while being married to a white woman. This was particularly common in Louisiana, but was discouraged by the clergy.", "title": "New World" }, { "paragraph_id": 60, "text": "Relationships with slaves in the United States and the Confederacy were sometimes euphemistically referred to as concubinary. From lifelong to single or serial sexual visitations, these relationships with enslaved people illustrate a radical power imbalance between a human owned as chattel and the legal owner of same. When personal ownership of slaves was enshrined in the law, an enslaved person had no legal power over their own legal personhood, the legal control to which was held by another entity; therefore, a slave could never give real and legal consent in any aspect of their life. The inability to give any kind of consent when enslaved is in part due to the ability of a slave master to legally coerce acts and declarations including those of affection, attraction, and consent through rewards and punishments, but legally the concept of chattel slavery in the United States and Confederate States defined and enforced in the law owning the legal personhood of a slave; meaning that the proxy for legal consent was found with the slave's master, who was the sole source of consent in the law to the bodily integrity and all efforts of that slave except as regulated or limited by law. With slavery being recognized as a crime against humanity in the United States law, as well as in international customary law, the legal basis of slavery is repudiated for all time and therefore repudiates any rights of owner-rapists had had to exercise any proxy sexual or other consent for their slaves.", "title": "New World" }, { "paragraph_id": 61, "text": "Free men in the United States sometimes took female slaves in relationships which they referred to as concubinage, although marriage between the races was prohibited by law in the colonies and the later United States. Many colonies and states also had laws against miscegenation or any interracial relations. From 1662 the Colony of Virginia, followed by others, incorporated into law the principle that children took their mother's status, i.e., the principle of partus sequitur ventrem. This led to generations of multiracial slaves, some of whom were otherwise considered legally white (one-eighth or less African, equivalent to a great-grandparent) before the American Civil War.", "title": "New World" }, { "paragraph_id": 62, "text": "In some cases, men had long-term relationships with enslaved women, giving them and their mixed-race children freedom and providing their children with apprenticeships, education and transfer of capital. A relationship between Thomas Jefferson and Sally Hemings is an example of this. Such arrangements were more prevalent in the American South during the antebellum period.", "title": "New World" }, { "paragraph_id": 63, "text": "In Louisiana and former French territories, a formalized system of concubinage called plaçage developed. European men took enslaved or free women of color as mistresses after making arrangements to give them a dowry, house or other transfer of property, and sometimes, if they were enslaved, offering freedom and education for their children. A third class of free people of color developed, especially in New Orleans. Many became educated, artisans and property owners. French-speaking and practicing Catholicism, these women combined French and African-American culture and created an elite between those of European descent and the slaves. Today, descendants of the free people of color are generally called Louisiana Creole people.", "title": "New World" }, { "paragraph_id": 64, "text": "", "title": "New World" }, { "paragraph_id": 65, "text": "In Judaism, a concubine is a marital companion of inferior status to a wife. Among the Israelites, men commonly acknowledged their concubines, and such women enjoyed the same rights in the house as legitimate wives.", "title": "In Judaism" }, { "paragraph_id": 66, "text": "The term concubine did not necessarily refer to women after the first wife. A man could have many wives and concubines. Legally, any children born to a concubine were considered to be the children of the wife she was under. Sarah had to get Ishmael (son of Hagar) out of her house because, legally, Ishmael would always be the first-born son even though Isaac was her natural child. The concubine may not have commanded the exact amount of respect as the wife. In the Levitical rules on sexual relations, the Hebrew word that is commonly translated as \"wife\" is distinct from the Hebrew word that means \"concubine\". However, on at least one other occasion the term is used to refer to a woman who is not a wife – specifically, the handmaiden of Jacob's wife. In the Levitical code, sexual intercourse between a man and a wife of a different man was forbidden and punishable by death for both persons involved. Since it was regarded as the highest blessing to have many children, wives often gave their maids to their husbands if they were barren, as in the cases of Sarah and Hagar, and Rachel and Bilhah. The children of the concubine often had equal rights with those of the wife; for example, King Abimelech was the son of Gideon and his concubine. Later biblical figures, such as Gideon and Solomon, had concubines in addition to many childbearing wives. For example, the Books of Kings say that Solomon had 700 wives and 300 concubines.", "title": "In Judaism" }, { "paragraph_id": 67, "text": "The account of the unnamed Levite in Judges 19–20 shows that the taking of concubines was not the exclusive preserve of kings or patriarchs in Israel during the time of the Judges, and that the rape of a concubine was completely unacceptable to the Israelite nation and led to a civil war. In the story, the Levite appears to be an ordinary member of the tribe, whose concubine was a woman from Bethlehem in Judah. This woman was unfaithful, and eventually abandoned him to return to her paternal household. However, after four months, the Levite, referred to as her husband, decided to travel to her father's house to persuade his concubine to return. She is amenable to returning with him, and the father-in-law is very welcoming. The father-in-law convinces the Levite to remain several additional days, until the party leaves behind schedule in the late evening. The group pass up a nearby non-Israelite town to arrive very late in the city of Gibeah, which is in the land of the Benjaminites. The group sit around the town square, waiting for a local to invite them in for the evening, as was the custom for travelers. A local old man invites them to stay in his home, offering them guest right by washing their feet and offering them food. A band of wicked townsmen attack the house and demand the host send out the Levite man so they can rape him. The host offers to send out his virgin daughter as well as the Levite's concubine for them to rape, to avoid breaking guest right towards the Levite. Eventually, to ensure his own safety and that of his host, the Levite gives the men his concubine, who is raped and abused through the night, until she is left collapsed against the front door at dawn. In the morning, the Levite finds her when he tries to leave. When she fails to respond to her husband's order to get up (possibly because she is dead, although the language is unclear) the Levite places her on his donkey and continues home. Once home, he dismembers her body and distributes the 12 parts throughout the nation of Israel. The Israelites gather to learn why they were sent such grisly gifts, and are told by the Levite of the sadistic rape of his concubine. The crime is considered outrageous by the Israelite tribesmen, who then wreak total retribution on the men of Gibeah, as well as the surrounding tribe of Benjamin when they support the Gibeans, killing them without mercy and burning all their towns. The inhabitants of (the town of) Jabesh Gilead are then slaughtered as a punishment for not joining the 11 tribes in their war against the Benjaminites, and their 400 unmarried daughters given in forced marriage to the 600 Benjamite survivors. Finally, the 200 Benjaminite survivors who still have no wives are granted a mass marriage by abduction by the other tribes.", "title": "In Judaism" }, { "paragraph_id": 68, "text": "In Judaism, concubines are referred to by the Hebrew term pilegesh (Hebrew: פילגש). The term is a loanword from Ancient Greek παλλακίς, meaning \"a mistress staying in house\".", "title": "In Judaism" }, { "paragraph_id": 69, "text": "According to the Babylonian Talmud, the difference between a concubine and a legitimate wife was that the latter received a ketubah and her marriage (nissu'in) was preceded by an erusin (\"formal betrothal\"), which was not the case for a concubine. One opinion in the Jerusalem Talmud argues that the concubine should also receive a marriage contract, but without a clause specifying a divorce settlement. According to Rashi, \"wives with kiddushin and ketubbah, concubines with kiddushin but without ketubbah\"; this reading is from the Jerusalem Talmud,", "title": "In Judaism" }, { "paragraph_id": 70, "text": "Certain Jewish thinkers, such as Maimonides, believed that concubines were strictly reserved for royal leadership and thus that a commoner may not have a concubine. Indeed, such thinkers argued that commoners may not engage in any type of sexual relations outside of a marriage. Maimonides was not the first Jewish thinker to criticise concubinage. For example, Leviticus Rabbah severely condemns the custom. Other Jewish thinkers, such as Nahmanides, Samuel ben Uri Shraga Phoebus, and Jacob Emden, strongly objected to the idea that concubines should be forbidden. Despite these prohibitions, concubinage remained widespread among Jewish households of the Ottoman empire and resembled the practice among the Muslim households.", "title": "In Judaism" }, { "paragraph_id": 71, "text": "In the Hebrew of the contemporary State of Israel, pilegesh is often used as the equivalent of the English word \"mistress\"—i.e., the female partner in extramarital relations—regardless of legal recognition. Attempts have been initiated to popularise pilegesh as a form of premarital, non-marital or extramarital relationship (which, according to the perspective of the enacting person(s), is permitted by Jewish law).", "title": "In Judaism" }, { "paragraph_id": 72, "text": "In some context, the institution of concubinage diverged from a free quasi-marital cohabitation to the extent that it was forbidden to a free woman to be involved in a concubinage and the institution was reserved only to slaves. This type of concubinage was practiced in patriarchal cultures throughout history. Many societies automatically freed the concubine after she had a child. According to one study, this was the case in about one-third of slave-holding societies, the most prominent being case of the Muslim world. Among societies that did not legally require the manumission of concubines, it was usually done anyway. In slave-owning societies, most concubines were slaves, but not all. The feature about concubinage that made it attractive to certain men was that the concubine was dependent on the man - she could be sold or punished at the master's will. According to Orlando Peterson, slaves taken as concubines would have had a higher level of material comfort than the slaves used in agriculture or in mining.", "title": "Concubinage and slavery" } ]	Concubinage is an interpersonal and sexual relationship between two people in which the couple does not want, or cannot, enter into a full marriage. Concubinage and marriage are often regarded as similar, but mutually exclusive. Concubinage was a formal and institutionalized practice in China until the 20th century that upheld concubines' rights and obligations. A concubine could be freeborn or of slave origin, and her experience could vary tremendously according to her master's whim. During the Mongol conquests, both foreign royals and captured women were taken as concubines. Concubinage was also common in Meiji Japan as a status symbol, and in Indian society, where the intermingling of different social groups and religions was frowned upon and a taboo, and concubinage could be practiced with women with whom marriage was considered undesirable. Many Middle Eastern societies used concubinage for reproduction. The practice of a barren wife giving her husband a slave as a concubine is recorded in the Code of Hammurabi and the Bible, where Abraham takes Hagar as pilegesh. The children of such relationships would be regarded as legitimate. Such concubinage was also widely practiced in the premodern Muslim world, and many of the rulers of the Abbasid caliphate and the Ottoman Empire were born out of such relationships. Throughout Africa, from Egypt to South Africa, slave concubinage resulted in racially mixed populations. The practice declined as a result of the abolition of slavery. In ancient Rome, the practice was formalized as concubinatus, the Latin term from which the English "concubine" is derived. It referred to any extramarital sexual relationship, most often that between a wealthy or politically powerful man and a woman of low social origins kept for sexual service. The marital status of the man was irrelevant and the concubine's children did not receive an inheritance. After Christianization of Roman Empire, Christian emperors improved the status of the concubine by granting concubines and their children the sorts of property and inheritance rights usually reserved for wives. In European colonies and American slave plantations, single and married men entered into long-term sexual relationships with local women. In the Dutch East Indies, concubinage created mixed-race Indo-European communities. In the Judeo-Christian world, the term concubine has almost exclusively been applied to women, although a cohabiting male may also be called a concubine. In the 21st century, concubinage is used in some Western countries as a gender-neutral legal term to refer to cohabitation.	2001-11-05T23:02:21Z	2023-11-24T02:14:47Z	[ "Template:Expand section", "Template:Dubious", "Template:Div col", "Template:Div col end", "Template:Cite journal", "Template:Sfn", "Template:Harvnb", "Template:Main article", "Template:Lang", "Template:See also", "Template:Notelist", "Template:Cite thesis", "Template:Feminism", "Template:Short description", "Template:Redirect", "Template:Use dmy dates", "Template:Citation needed", "Template:Snd", "Template:Main", "Template:Zh", "Template:Lang-he", "Template:Cite web", "Template:Types of marriages", "Template:Refend", "Template:Sister bar", "Template:Authority control", "Template:Efn", "Template:Lang-grc", "Template:Citation", "Template:Cite news", "Template:Bibleverse", "Template:Circa", "Template:Cn", "Template:Interpersonal relationships footer", "Template:Cite book", "Template:Cite encyclopedia", "Template:Webarchive", "Template:Close Relationships", "Template:Refn", "Template:POV section", "Template:Self-contradictory", "Template:Reflist", "Template:Refbegin" ]	https://en.wikipedia.org/wiki/Concubinage
7,017	Central Plaza (Hong Kong)	Central Plaza is a 78-storey, 374 m (1,227 ft) skyscraper completed in August 1992 at 18 Harbour Road, in Wan Chai on Hong Kong Island in Hong Kong. It is the third tallest tower in the city after 2 International Finance Centre in Central and the ICC in West Kowloon. It was the tallest building in Asia from 1992 to 1996, until the Shun Hing Square was built in Shenzhen, a neighbouring city. Central Plaza surpassed the Bank of China Tower as the tallest building in Hong Kong until the completion of 2 IFC. Central Plaza was also the tallest reinforced concrete building in the world, until it was surpassed by CITIC Plaza, Guangzhou. The building uses a triangular floor plan. On the top of the tower is a four-bar neon clock that indicates the time by displaying different colours for 15-minute periods, blinking at the change of the quarter. An anemometer is installed on the tip of the building's mast, at 378 metres (1,240 ft) above sea level. The mast has a height of 102 m (335 ft). It also houses the world's highest church inside a skyscraper, Sky City Church. The land upon which Central Plaza sits was reclaimed from Victoria Harbour in the 1970s. The 77,800 square feet (7,230 m) site was auctioned off by the Hong Kong Government at City Hall Theatre on 25 January 1989. It was sold for a record HK$3.35 billion to a joint venture called "Cheer City Properties", owned 50 per cent by Sun Hung Kai Properties and 50 per cent by fellow real estate conglomerate Sino Land and their major shareholder the Ng Teng Fong family. A third developer, Ryoden Development, joined the consortium afterward. Ryoden Development disposed its 5% interest for 190,790 square feet of office space in New Kowloon Plaza from Sun Hung Kai in 1995. The first major tenant to sign a lease was the Provisional Airport Authority, who on 2 August 1991 agreed to lease the 24th to 26th floors. A topping-out ceremony, presided over by Sir David Ford, was held on 9 April 1992. Central Plaza is made up of two principal components: a free standing 368-metre-high (1,207 ft) office tower and a 30.5-metre-high (100 ft) podium block attached to it. The tower is made up of three sections: a 30.5-metre-high (100 ft) tower base forming the main entrance and public circulation spaces; a 235.4-metre-tall (772 ft) tower body containing 57 office floors, a sky lobby and five mechanical plant floors; and the tower top consists of six mechanical plant floors and a 102-metre-tall (335 ft) tower mast. The ground level public area along with the public sitting out area form an 8,400 m (90,000 sq ft) landscaped garden with fountain, trees and artificial stone paving. No commercial element is included in the podium. The first level is a public thoroughfare for three pedestrian bridges linking the Mass Transit Railway, the Convention and Exhibition Centre and the China Resource Building. By turning these space to public use, the building got 20% plot ratio more as bonus. The shape of the tower is not truly triangular but with its three corners cut off to provide better internal office spaces. Central Plaza was designed by the Hong Kong architectural firm Ng Chun Man and Associates and engineered by Arup. The main contractor was a joint venture, comprising the contracting firms Sanfield (a subsidiary of Sun Hung Kai) and Tat Lee, called Manloze Ltd. The building was designed to be triangular in shape because it would allow 20% more of the office area to enjoy the harbour view as compared with a square or rectangular shaped buildings. From an architectural point of view, this arrangement provides better floor area utilisation, offering an internal column-free office area with a clear depth of 9 to 13.4 m (30 to 44 ft) and an overall usable floor area efficiency of 81%. Nonetheless, the triangular building plan causes the air handling unit (AHU) room in the internal core to also assume a triangular configuration. With only limited space, this makes the adoption of a standard AHU not feasible. Furthermore, all air-conditioning ducting, electrical trunking and piping gathered inside the core area has to be squeezed into a very narrow and congested corridor ceiling void. As the building is situated opposite to the Hong Kong Convention and Exhibition Centre, the only way to get more sea view for the building and not be obstructed by the neighbouring high-rise buildings is to build it tall enough. However, a tall building brings a lot of difficulties to structural and building services design, for example, excessive system static pressure for water systems, high line voltage drop and long distance of vertical transportation. All these problems can increase the capital cost of the building systems and impair the safety operation of the building. As a general practice, for achieving a clear height of 2.6 to 2.7 m (8.5 to 8.9 ft), a floor-to-floor height of 3.9 to 4.0 m (12.8 to 13.1 ft) would be required. However, because of high windload in Hong Kong for such a super high-rise building, every increase in building height by a metre would increase the structural cost by more than HK$1 million (HK$304,800 per ft). Therefore, a comprehensive study was conducted and finally a floor height of 3.6 m (12 ft) was adopted. With this issue alone, an estimated construction cost saving for a total of 58 office floors, would be around HK$30 million. Yet at the same time, a maximum ceiling height of 2.6 m (8 ft 6 in) in office area could still be achieved with careful coordination and dedicated integration. Steel structure is more commonly adopted in high-rise building. In the original scheme, an externally cross-braced framed tube was applied with primary/secondary beams carrying metal decking with reinforced concrete slab. The core was also of steelwork, designed to carry vertical load only. Later after a financial review by the developer, they decided to reduce the height of the superstructure by increasing the size of the floor plate so as to reduce the complex architectural requirements of the tower base which means a highstrength concrete solution became possible. In the final scheme, columns at 4.6 m (15 ft) centres and 1.1-metre-deep (3.6 ft) floor edge beams were used to replace the large steel corner columns. As climbing form and table form construction method and efficient construction management are used in this project which make this reinforced concrete structure take no longer construction time than the steel structure. And the most attractive point is that the reinforced concrete scheme can save HK$230 million compared to that of steel structure. Hence the reinforced concrete structure was adopted and Central Plaza is now one of the tallest reinforced concrete buildings in the world. In the reinforced concrete structure scheme, the core has a similar arrangement to the steel scheme and the wind shear is taken out from the core at the lowest basement level and transferred to the perimeter diaphragm walls. In order to reduce large shear reversals in the core walls in the basement, and at the top of the tower base level, the ground floor, basement levels 1 and 2 and the 5th and 6th floors, the floor slabs and beams are separated horizontally from the core walls. Another advantage of using reinforced concrete structure is that it is more flexible to cope with changes in structural layout, sizes and height according to the site conditions by using table form system. This skyscraper was visited in the seventh leg of the reality TV show The Amazing Race 2, which described Central Plaza as "the tallest building in Hong Kong". Although contestants were told to reach the top floor, the actual task was performed on the 46th floor.	[ { "paragraph_id": 0, "text": "Central Plaza is a 78-storey, 374 m (1,227 ft) skyscraper completed in August 1992 at 18 Harbour Road, in Wan Chai on Hong Kong Island in Hong Kong. It is the third tallest tower in the city after 2 International Finance Centre in Central and the ICC in West Kowloon. It was the tallest building in Asia from 1992 to 1996, until the Shun Hing Square was built in Shenzhen, a neighbouring city. Central Plaza surpassed the Bank of China Tower as the tallest building in Hong Kong until the completion of 2 IFC.", "title": "" }, { "paragraph_id": 1, "text": "Central Plaza was also the tallest reinforced concrete building in the world, until it was surpassed by CITIC Plaza, Guangzhou. The building uses a triangular floor plan. On the top of the tower is a four-bar neon clock that indicates the time by displaying different colours for 15-minute periods, blinking at the change of the quarter.", "title": "" }, { "paragraph_id": 2, "text": "An anemometer is installed on the tip of the building's mast, at 378 metres (1,240 ft) above sea level. The mast has a height of 102 m (335 ft). It also houses the world's highest church inside a skyscraper, Sky City Church.", "title": "" }, { "paragraph_id": 3, "text": "The land upon which Central Plaza sits was reclaimed from Victoria Harbour in the 1970s. The 77,800 square feet (7,230 m) site was auctioned off by the Hong Kong Government at City Hall Theatre on 25 January 1989. It was sold for a record HK$3.35 billion to a joint venture called \"Cheer City Properties\", owned 50 per cent by Sun Hung Kai Properties and 50 per cent by fellow real estate conglomerate Sino Land and their major shareholder the Ng Teng Fong family. A third developer, Ryoden Development, joined the consortium afterward. Ryoden Development disposed its 5% interest for 190,790 square feet of office space in New Kowloon Plaza from Sun Hung Kai in 1995.", "title": "History" }, { "paragraph_id": 4, "text": "The first major tenant to sign a lease was the Provisional Airport Authority, who on 2 August 1991 agreed to lease the 24th to 26th floors. A topping-out ceremony, presided over by Sir David Ford, was held on 9 April 1992.", "title": "History" }, { "paragraph_id": 5, "text": "Central Plaza is made up of two principal components: a free standing 368-metre-high (1,207 ft) office tower and a 30.5-metre-high (100 ft) podium block attached to it. The tower is made up of three sections: a 30.5-metre-high (100 ft) tower base forming the main entrance and public circulation spaces; a 235.4-metre-tall (772 ft) tower body containing 57 office floors, a sky lobby and five mechanical plant floors; and the tower top consists of six mechanical plant floors and a 102-metre-tall (335 ft) tower mast.", "title": "Design" }, { "paragraph_id": 6, "text": "The ground level public area along with the public sitting out area form an 8,400 m (90,000 sq ft) landscaped garden with fountain, trees and artificial stone paving. No commercial element is included in the podium. The first level is a public thoroughfare for three pedestrian bridges linking the Mass Transit Railway, the Convention and Exhibition Centre and the China Resource Building. By turning these space to public use, the building got 20% plot ratio more as bonus. The shape of the tower is not truly triangular but with its three corners cut off to provide better internal office spaces.", "title": "Design" }, { "paragraph_id": 7, "text": "Central Plaza was designed by the Hong Kong architectural firm Ng Chun Man and Associates and engineered by Arup. The main contractor was a joint venture, comprising the contracting firms Sanfield (a subsidiary of Sun Hung Kai) and Tat Lee, called Manloze Ltd.", "title": "Design" }, { "paragraph_id": 8, "text": "The building was designed to be triangular in shape because it would allow 20% more of the office area to enjoy the harbour view as compared with a square or rectangular shaped buildings. From an architectural point of view, this arrangement provides better floor area utilisation, offering an internal column-free office area with a clear depth of 9 to 13.4 m (30 to 44 ft) and an overall usable floor area efficiency of 81%. Nonetheless, the triangular building plan causes the air handling unit (AHU) room in the internal core to also assume a triangular configuration. With only limited space, this makes the adoption of a standard AHU not feasible. Furthermore, all air-conditioning ducting, electrical trunking and piping gathered inside the core area has to be squeezed into a very narrow and congested corridor ceiling void.", "title": "Design constraints" }, { "paragraph_id": 9, "text": "As the building is situated opposite to the Hong Kong Convention and Exhibition Centre, the only way to get more sea view for the building and not be obstructed by the neighbouring high-rise buildings is to build it tall enough. However, a tall building brings a lot of difficulties to structural and building services design, for example, excessive system static pressure for water systems, high line voltage drop and long distance of vertical transportation. All these problems can increase the capital cost of the building systems and impair the safety operation of the building.", "title": "Design constraints" }, { "paragraph_id": 10, "text": "As a general practice, for achieving a clear height of 2.6 to 2.7 m (8.5 to 8.9 ft), a floor-to-floor height of 3.9 to 4.0 m (12.8 to 13.1 ft) would be required. However, because of high windload in Hong Kong for such a super high-rise building, every increase in building height by a metre would increase the structural cost by more than HK$1 million (HK$304,800 per ft). Therefore, a comprehensive study was conducted and finally a floor height of 3.6 m (12 ft) was adopted. With this issue alone, an estimated construction cost saving for a total of 58 office floors, would be around HK$30 million. Yet at the same time, a maximum ceiling height of 2.6 m (8 ft 6 in) in office area could still be achieved with careful coordination and dedicated integration.", "title": "Design constraints" }, { "paragraph_id": 11, "text": "Steel structure is more commonly adopted in high-rise building. In the original scheme, an externally cross-braced framed tube was applied with primary/secondary beams carrying metal decking with reinforced concrete slab. The core was also of steelwork, designed to carry vertical load only. Later after a financial review by the developer, they decided to reduce the height of the superstructure by increasing the size of the floor plate so as to reduce the complex architectural requirements of the tower base which means a highstrength concrete solution became possible.", "title": "Design constraints" }, { "paragraph_id": 12, "text": "In the final scheme, columns at 4.6 m (15 ft) centres and 1.1-metre-deep (3.6 ft) floor edge beams were used to replace the large steel corner columns. As climbing form and table form construction method and efficient construction management are used in this project which make this reinforced concrete structure take no longer construction time than the steel structure. And the most attractive point is that the reinforced concrete scheme can save HK$230 million compared to that of steel structure. Hence the reinforced concrete structure was adopted and Central Plaza is now one of the tallest reinforced concrete buildings in the world.", "title": "Design constraints" }, { "paragraph_id": 13, "text": "In the reinforced concrete structure scheme, the core has a similar arrangement to the steel scheme and the wind shear is taken out from the core at the lowest basement level and transferred to the perimeter diaphragm walls. In order to reduce large shear reversals in the core walls in the basement, and at the top of the tower base level, the ground floor, basement levels 1 and 2 and the 5th and 6th floors, the floor slabs and beams are separated horizontally from the core walls.", "title": "Design constraints" }, { "paragraph_id": 14, "text": "Another advantage of using reinforced concrete structure is that it is more flexible to cope with changes in structural layout, sizes and height according to the site conditions by using table form system.", "title": "Design constraints" }, { "paragraph_id": 15, "text": "This skyscraper was visited in the seventh leg of the reality TV show The Amazing Race 2, which described Central Plaza as \"the tallest building in Hong Kong\". Although contestants were told to reach the top floor, the actual task was performed on the 46th floor.", "title": "Trivia" } ]	Central Plaza is a 78-storey, 374 m (1,227 ft) skyscraper completed in August 1992 at 18 Harbour Road, in Wan Chai on Hong Kong Island in Hong Kong. It is the third tallest tower in the city after 2 International Finance Centre in Central and the ICC in West Kowloon. It was the tallest building in Asia from 1992 to 1996, until the Shun Hing Square was built in Shenzhen, a neighbouring city. Central Plaza surpassed the Bank of China Tower as the tallest building in Hong Kong until the completion of 2 IFC. Central Plaza was also the tallest reinforced concrete building in the world, until it was surpassed by CITIC Plaza, Guangzhou. The building uses a triangular floor plan. On the top of the tower is a four-bar neon clock that indicates the time by displaying different colours for 15-minute periods, blinking at the change of the quarter. An anemometer is installed on the tip of the building's mast, at 378 metres (1,240 ft) above sea level. The mast has a height of 102 m (335 ft). It also houses the world's highest church inside a skyscraper, Sky City Church.	2001-11-06T01:52:49Z	2023-09-14T01:37:05Z	[ "Template:Chinese", "Template:Clear", "Template:Cite news", "Template:Cite web", "Template:Use dmy dates", "Template:Infobox building", "Template:Wan Chai District", "Template:Buildings in Hong Kong timeline", "Template:Hong Kong Skyscrapers", "Template:Supertall skyscrapers", "Template:Reflist", "Template:Commons category", "Template:Portal", "Template:Cite journal", "Template:Official website", "Template:Short description", "Template:Use Hong Kong English", "Template:Convert" ]	https://en.wikipedia.org/wiki/Central_Plaza_(Hong_Kong)
7,018	Caravaggio	Michelangelo Merisi (Michele Angelo Merigi or Amerighi) da Caravaggio, known as simply Caravaggio (/ˌkærəˈvædʒioʊ/, US: /-ˈvɑːdʒ(i)oʊ/, Italian: [mikeˈlandʒelo meˈriːzi da (k)karaˈvaddʒo]; 29 September 1571 – 18 July 1610), was an Italian painter active in Rome for most of his artistic life. During the final four years of his life he moved between Naples, Malta, and Sicily until his death. His paintings have been characterized by art critics as combining a realistic observation of the human state, both physical and emotional, with a dramatic use of lighting, which had a formative influence on Baroque painting. Caravaggio employed close physical observation with a dramatic use of chiaroscuro that came to be known as tenebrism. He made the technique a dominant stylistic element, transfixing subjects in bright shafts of light and darkening shadows. Caravaggio vividly expressed crucial moments and scenes, often featuring violent struggles, torture, and death. He worked rapidly with live models, preferring to forgo drawings and work directly onto the canvas. His inspiring effect on the new Baroque style that emerged from Mannerism was profound. His influence can be seen directly or indirectly in the work of Peter Paul Rubens, Jusepe de Ribera, Gian Lorenzo Bernini, and Rembrandt. Artists heavily under his influence were called the "Caravaggisti" (or "Caravagesques"), as well as tenebrists or tenebrosi ("shadowists"). Caravaggio trained as a painter in Milan before moving to Rome when he was in his twenties. He developed a considerable name as an artist and as a violent, touchy and provocative man. He killed Ranuccio Tommasoni in a brawl, which led to a death sentence for murder and forced him to flee to Naples. There he again established himself as one of the most prominent Italian painters of his generation. He travelled to Malta and on to Sicily in 1607 and pursued a papal pardon for his sentence. In 1609 he returned to Naples, where he was involved in a violent clash; his face was disfigured, and rumours of his death circulated. Questions about his mental state arose from his erratic and bizarre behavior. He died in 1610 under uncertain circumstances while on his way from Naples to Rome. Reports stated that he died of a fever, but suggestions have been made that he was murdered or that he died of lead poisoning. Caravaggio's innovations inspired Baroque painting, but the latter incorporated the drama of his chiaroscuro without the psychological realism. The style evolved and fashions changed, and Caravaggio fell out of favour. In the 20th century, interest in his work revived, and his importance to the development of Western art was reevaluated. The 20th-century art historian André Berne-Joffroy [fr] stated: "What begins in the work of Caravaggio is, quite simply, modern painting." Caravaggio (Michelangelo Merisi or Amerighi) was born in Milan, where his father, Fermo (Fermo Merixio), was a household administrator and architect-decorator to the Marchese of Caravaggio, a town 35 km to the east of Milan and south of Bergamo. In 1576 the family moved to Caravaggio (Caravaggius) to escape a plague that ravaged Milan, and Caravaggio's father and grandfather both died there on the same day in 1577. It is assumed that the artist grew up in Caravaggio, but his family kept up connections with the Sforzas and the powerful Colonna family, who were allied by marriage with the Sforzas and destined to play a major role later in Caravaggio's life. Caravaggio's mother had to raise all of her five children in poverty. She later died in 1584, the same year he began his four-year apprenticeship to the Milanese painter Simone Peterzano, described in the contract of apprenticeship as a pupil of Titian. Caravaggio appears to have stayed in the Milan-Caravaggio area after his apprenticeship ended, but it is possible that he visited Venice and saw the works of Giorgione, whom Federico Zuccari later accused him of imitating, and Titian. He would also have become familiar with the art treasures of Milan, including Leonardo da Vinci's Last Supper, and with the regional Lombard art, a style that valued simplicity and attention to naturalistic detail and was closer to the naturalism of Germany than to the stylised formality and grandeur of Roman Mannerism. Following his initial training under Simone Peterzano, in 1592, Caravaggio left Milan for Rome in flight after "certain quarrels" and the wounding of a police officer. The young artist arrived in Rome "naked and extremely needy... without fixed address and without provision... short of money." During this period, he stayed with the miserly Pandolfo Pucci, known as "monsignor Insalata". A few months later he was performing hack-work for the highly successful Giuseppe Cesari, Pope Clement VIII's favourite artist, "painting flowers and fruit" in his factory-like workshop. In Rome, there was a demand for paintings to fill the many huge new churches and palazzi being built at the time. It was also a period when the Church was searching for a stylistic alternative to Mannerism in religious art that was tasked to counter the threat of Protestantism. Caravaggio's innovation was a radical naturalism that combined close physical observation with a dramatic, even theatrical, use of chiaroscuro that came to be known as tenebrism (the shift from light to dark with little intermediate value). Known works from this period include a small Boy Peeling a Fruit (his earliest known painting), a Boy with a Basket of Fruit, and the Young Sick Bacchus, supposedly a self-portrait done during convalescence from a serious illness that ended his employment with Cesari. All three demonstrate the physical particularity for which Caravaggio was to become renowned: the fruit-basket-boy's produce has been analysed by a professor of horticulture, who was able to identify individual cultivars right down to "...a large fig leaf with a prominent fungal scorch lesion resembling anthracnose (Glomerella cingulata)." Caravaggio left Cesari, determined to make his own way after a heated argument. At this point he forged some extremely important friendships, with the painter Prospero Orsi, the architect Onorio Longhi, and the sixteen-year-old Sicilian artist Mario Minniti. Orsi, established in the profession, introduced him to influential collectors; Longhi, more balefully, introduced him to the world of Roman street brawls. Minniti served Caravaggio as a model and, years later, would be instrumental in helping him to obtain important commissions in Sicily. Ostensibly, the first archival reference to Caravaggio in a contemporary document from Rome is the listing of his name, with that of Prospero Orsi as his partner, as an 'assistant' in a procession in October 1594 in honour of St. Luke. The earliest informative account of his life in the city is a court transcript dated 11 July 1597, when Caravaggio and Prospero Orsi were witnesses to a crime near San Luigi de' Francesi. The Fortune Teller, his first composition with more than one figure, shows a boy, likely Minniti, having his palm read by a Romani girl, who is stealthily removing his ring as she strokes his hand. The theme was quite new for Rome and proved immensely influential over the next century and beyond. However, at the time, Caravaggio sold it for practically nothing. The Cardsharps—showing another naïve youth of privilege falling the victim of card cheats—is even more psychologically complex and perhaps Caravaggio's first true masterpiece. Like The Fortune Teller, it was immensely popular, and over 50 copies survived. More importantly, it attracted the patronage of Cardinal Francesco Maria del Monte, one of the leading connoisseurs in Rome. For Del Monte and his wealthy art-loving circle, Caravaggio executed a number of intimate chamber-pieces—The Musicians, The Lute Player, a tipsy Bacchus, an allegorical but realistic Boy Bitten by a Lizard—featuring Minniti and other adolescent models. Caravaggio's first paintings on religious themes returned to realism and the emergence of remarkable spirituality. The first of these was the Penitent Magdalene, showing Mary Magdalene at the moment when she has turned from her life as a courtesan and sits weeping on the floor, her jewels scattered around her. "It seemed not a religious painting at all ... a girl sitting on a low wooden stool drying her hair ... Where was the repentance ... suffering ... promise of salvation?" It was understated, in the Lombard manner, not histrionic in the Roman manner of the time. It was followed by others in the same style: Saint Catherine; Martha and Mary Magdalene; Judith Beheading Holofernes; a Sacrifice of Isaac; a Saint Francis of Assisi in Ecstasy; and a Rest on the Flight into Egypt. These works, while viewed by a comparatively limited circle, increased Caravaggio's fame with both connoisseurs and his fellow artists. But a true reputation would depend on public commissions, for which it was necessary to look to the Church. Already evident was the intense realism or naturalism for which Caravaggio is now famous. He preferred to paint his subjects as the eye sees them, with all their natural flaws and defects, instead of as idealised creations. This allowed a full display of his virtuosic talents. This shift from accepted standard practice and the classical idealism of Michelangelo was very controversial at the time. Caravaggio also dispensed with the lengthy preparations traditional in central Italy at the time. Instead, he preferred the Venetian practice of working in oils directly from the subject—half-length figures and still life. Supper at Emmaus, from c. 1600–1601, is a characteristic work of this period demonstrating his virtuoso talent. In 1599, presumably through the influence of Del Monte, Caravaggio was contracted to decorate the Contarelli Chapel in the church of San Luigi dei Francesi. The two works making up the commission, The Martyrdom of Saint Matthew and The Calling of Saint Matthew, delivered in 1600, were an immediate sensation. Thereafter he never lacked commissions or patrons. Caravaggio's tenebrism (a heightened chiaroscuro) brought high drama to his subjects, while his acutely observed realism brought a new level of emotional intensity. Opinion among his artist peers was polarised. Some denounced him for various perceived failings, notably his insistence on painting from life, without drawings, but for the most part, he was hailed as a great artistic visionary: "The painters then in Rome were greatly taken by this novelty, and the young ones particularly gathered around him, praised him as the unique imitator of nature, and looked on his work as miracles." Caravaggio went on to secure a string of prestigious commissions for religious works featuring violent struggles, grotesque decapitations, torture and death. Most notable and technically masterful among them were The Incredulity of Saint Thomas (circa 1601) and The Taking of Christ (circa 1602) for the Mattei family, which were only rediscovered in the 1990s in Trieste and in Dublin after remaining unrecognised for two centuries. For the most part, each new painting increased his fame, but a few were rejected by the various bodies for whom they were intended, at least in their original forms, and had to be re-painted or found new buyers. The essence of the problem was that while Caravaggio's dramatic intensity was appreciated, his realism was seen by some as unacceptably vulgar. His first version of Saint Matthew and the Angel, featuring the saint as a bald peasant with dirty legs attended by a lightly clad over-familiar boy-angel, was rejected and a second version had to be painted as The Inspiration of Saint Matthew. Similarly, The Conversion of Saint Paul was rejected, and while another version of the same subject, the Conversion on the Way to Damascus, was accepted, it featured the saint's horse's haunches far more prominently than the saint himself, prompting this exchange between the artist and an exasperated official of Santa Maria del Popolo: "Why have you put a horse in the middle, and Saint Paul on the ground?" "Because!" "Is the horse God?" "No, but he stands in God's light!" The aristocratic collector Ciriaco Mattei, brother of Cardinal Girolamo Mattei, who was friends with Cardinal Francesco Maria Bourbon Del Monte, gave The Supper at Emmaus for the city palace he shared with his brother, 1601 (National Gallery, London), The Incredulity of Saint Thomas, c. 1601, "Ecclesiastical Version" (Private Collection, Florence), The Incredulity of Saint Thomas c. 1601, 1601 "Secular Version" (Sanssouci Palace, Potsdam), John the Baptist with the Ram, 1602 (Capitoline Museums, Rome) and The Taking of Christ, 1602 (National Gallery of Ireland, Dublin) Caravaggio commissioned. The second version of The Taking of Christ, which was looted from the Odessa Museum in 2008 and recovered in 2010, is believed by some experts to be a contemporary copy. The Incredulity of Saint Thomas is one of the most famous paintings by the Italian baroque master Caravaggio, circa 1601–1602. There are two autograph versions of Caravaggio's "The Incredulity of Saint Thomas", an ecclesiastical "Trieste" version for Girolamo Mattei now in a private collection and a secular "Potsdam" version for Vincenzo Giustiniani (Pietro Bellori) and later entered the Prussian Royal Collection and survived the Second World War unscathed and can be admired in the Palais in Sanssouci, Potsdam. It depicts the episode that led to the term "Doubting Thomas", officially known as "The Incredulity of Saint Thomas", which has been frequently depicted and used to make various theological statements in Christian art since at least the 5th century. According to the Gospel of John, Thomas the Apostle missed one of Jesus' appearances to the apostles after his resurrection and said, "Unless I see the marks of the nails in his hands, and put my finger where the nails were, and put my hand into his side, I will not believe it." A week later, Jesus appeared and told Thomas to touch him and stop doubting. Then Jesus said, "Because you have seen me, you have believed; blessed are those who have not seen and yet have believed." The two pictures show in a demonstrative gesture how the doubting apostle puts his finger into Christ's side wound, the latter guiding his hand. The unbeliever is depicted like a peasant, dressed in a robe torn at the shoulder and with dirt under his fingernails. The composition of the picture is designed in such a way that the viewer is directly involved in the event and feels the intensity of the event as it were. It should also be noted that in the ecclesiastical version of the unbelieving Thomas, Christ's thigh is shown to be covered, whereas in the secular version of the painting, Christ's thigh is visible. Other works included Entombment, the Madonna di Loreto ("Madonna of the Pilgrims"), the Grooms' Madonna, and the Death of the Virgin. The history of these last two paintings illustrates the reception given to some of Caravaggio's art and the times in which he lived. The Grooms' Madonna, also known as Madonna dei palafrenieri, painted for a small altar in Saint Peter's Basilica in Rome, remained there for just two days and was then taken off. A cardinal's secretary wrote: "In this painting, there are but vulgarity, sacrilege, impiousness and disgust...One would say it is a work made by a painter that can paint well, but of a dark spirit, and who has been for a lot of time far from God, from His adoration, and from any good thought..." The Death of the Virgin, commissioned in 1601 by a wealthy jurist for his private chapel in the new Carmelite church of Santa Maria della Scala, was rejected by the Carmelites in 1606. Caravaggio's contemporary Giulio Mancini records that it was rejected because Caravaggio had used a well-known prostitute as his model for the Virgin. Giovanni Baglione, another contemporary, tells that it was due to Mary's bare legs—a matter of decorum in either case. Caravaggio scholar John Gash suggests that the problem for the Carmelites may have been theological rather than aesthetic, in that Caravaggio's version fails to assert the doctrine of the Assumption of Mary, the idea that the Mother of God did not die in any ordinary sense but was assumed into Heaven. The replacement altarpiece commissioned (from one of Caravaggio's most able followers, Carlo Saraceni), showed the Virgin not dead, as Caravaggio had painted her, but seated and dying; and even this was rejected, and replaced with a work showing the Virgin not dying, but ascending into Heaven with choirs of angels. In any case, the rejection did not mean that Caravaggio or his paintings were out of favour. The Death of the Virgin was no sooner taken out of the church than it was purchased by the Duke of Mantua, on the advice of Rubens, and later acquired by Charles I of England before entering the French royal collection in 1671. One secular piece from these years is Amor Vincit Omnia, in English also called Amor Victorious, painted in 1602 for Vincenzo Giustiniani, a member of Del Monte's circle. The model was named in a memoir of the early 17th century as "Cecco", the diminutive for Francesco. He is possibly Francesco Boneri, identified with an artist active in the period 1610–1625 and known as Cecco del Caravaggio ('Caravaggio's Cecco'), carrying a bow and arrows and trampling symbols of the warlike and peaceful arts and sciences underfoot. He is unclothed, and it is difficult to accept this grinning urchin as the Roman god Cupid—as difficult as it was to accept Caravaggio's other semi-clad adolescents as the various angels he painted in his canvases, wearing much the same stage-prop wings. The point, however, is the intense yet ambiguous reality of the work: it is simultaneously Cupid and Cecco, as Caravaggio's Virgins were simultaneously the Mother of Christ and the Roman courtesans who modeled for them. Caravaggio led a tumultuous life. He was notorious for brawling, even in a time and place when such behavior was commonplace, and the transcripts of his police records and trial proceedings fill many pages. Bellori claims that around 1590–1592, Caravaggio, already well known for brawling with gangs of young men, committed a murder which forced him to flee from Milan, first to Venice and then to Rome. On 28 November 1600, while living at the Palazzo Madama with his patron Cardinal Del Monte, Caravaggio beat nobleman Girolamo Stampa da Montepulciano, a guest of the cardinal, with a club, resulting in an official complaint to the police. Episodes of brawling, violence, and tumult grew more and more frequent. Caravaggio was often arrested and jailed at Tor di Nona. After his release from jail in 1601, Caravaggio returned to paint first The Taking of Christ and then Amor Vincit Omnia. In 1603, he was arrested again, this time for the defamation of another painter, Giovanni Baglione, who sued Caravaggio and his followers Orazio Gentileschi and Onorio Longhi for writing offensive poems about him. The French ambassador intervened, and Caravaggio was transferred to house arrest after a month in jail in Tor di Nona. Between May and October 1604, Caravaggio was arrested several times for possession of illegal weapons and for insulting the city guards. He was also sued by a tavern waiter for having thrown a plate of artichokes in his face. An early published notice on Caravaggio, dating from 1604 and describing his lifestyle three years previously, recounts that "after a fortnight's work he will swagger about for a month or two with a sword at his side and a servant following him, from one ball-court to the next, ever ready to engage in a fight or an argument, so that it is most awkward to get along with him." In 1605, Caravaggio was forced to flee to Genoa for three weeks after seriously injuring Mariano Pasqualone di Accumoli, a notary, in a dispute over Lena, Caravaggio's model and lover. The notary reported having been attacked on 29 July with a sword, causing a severe head injury. Caravaggio's patrons intervened and managed to cover up the incident. Upon his return to Rome, Caravaggio was sued by his landlady Prudenzia Bruni for not having paid his rent. Out of spite, Caravaggio threw rocks through her window at night and was sued again. In November, Caravaggio was hospitalized for an injury which he claimed he had caused himself by falling on his own sword. On 29 May 1606, Caravaggio killed a young man, possibly unintentionally, resulting in him fleeing Rome with a death sentence hanging over him. Ranuccio Tommasoni was a gangster from a wealthy family. The two had argued many times, often ending in blows. The circumstances are unclear, whether a brawl or a duel with swords at Campo Marzio, but the killing may have been unintentional. Many rumors circulated at the time as to the cause of the fight. Several contemporary avvisi referred to a quarrel over a gambling debt and a pallacorda game, a sort of tennis, and this explanation has become established in the popular imagination. Other rumors, however, claimed that the duel stemmed from jealousy over Fillide Melandroni, a well-known Roman prostitute who had modeled for him in several important paintings; Tommasoni was her pimp. According to such rumors, Caravaggio castrated Tommasoni with his sword before deliberately killing him, with other versions claiming that Tommasoni's death was caused accidentally during the castration. The duel may have had a political dimension, as Tommasoni's family was notoriously pro-Spanish, while Caravaggio was a client of the French ambassador. Caravaggio's patrons had hitherto been able to shield him from any serious consequences of his frequent duels and brawling, but Tommasoni's wealthy family was outraged by his death and demanded justice. Caravaggio's patrons were unable to protect him. Caravaggio was sentenced to beheading for murder, and an open bounty was decreed, enabling anyone who recognized him to legally carry the sentence out. Caravaggio's paintings began to obsessively depict severed heads, often his own, at this time. Good modern accounts are to be found in Peter Robb's M and Helen Langdon's Caravaggio: A Life. A theory relating the death to Renaissance notions of honour and symbolic wounding has been advanced by art historian Andrew Graham-Dixon. Whatever the details, it was a serious matter. Caravaggio was forced to flee Rome. He moved just south of the city, then to Naples, Malta, and Sicily. Following the death of Tomassoni, Caravaggio fled first to the estates of the Colonna family south of Rome, then on to Naples, where Costanza Colonna Sforza, widow of Francesco Sforza, in whose husband's household Caravaggio's father had held a position, maintained a palace. In Naples, outside the jurisdiction of the Roman authorities and protected by the Colonna family, the most famous painter in Rome became the most famous in Naples. His connections with the Colonnas led to a stream of important church commissions, including the Madonna of the Rosary, and The Seven Works of Mercy. The Seven Works of Mercy depicts the seven corporal works of mercy as a set of compassionate acts concerning the material needs of others. The painting was made for and is still housed in the church of Pio Monte della Misericordia in Naples. Caravaggio combined all seven works of mercy in one composition, which became the church's altarpiece. Alessandro Giardino has also established the connection between the iconography of "The Seven Works of Mercy" and the cultural, scientific and philosophical circles of the painting's commissioners. Despite his success in Naples, after only a few months in the city Caravaggio left for Malta, the headquarters of the Knights of Malta. Fabrizio Sforza Colonna, Costanza's son, was a Knight of Malta and general of the Order's galleys. He appears to have facilitated Caravaggio's arrival on the island in 1607 (and his escape the next year). Caravaggio presumably hoped that the patronage of Alof de Wignacourt, Grand Master of the Knights of Saint John, could help him secure a pardon for Tomassoni's death. Wignacourt was so impressed at having the famous artist as official painter to the Order that he inducted him as a Knight, and the early biographer Bellori records that the artist was well pleased with his success. Major works from his Malta period include the Beheading of Saint John the Baptist, his largest ever work, and the only painting to which he put his signature, Saint Jerome Writing (both housed in Saint John's Co-Cathedral, Valletta, Malta) and a Portrait of Alof de Wignacourt and his Page, as well as portraits of other leading Knights. According to Andrea Pomella, The Beheading of Saint John the Baptist is widely considered "one of the most important works in Western painting." Completed in 1608, the painting had been commissioned by the Knights of Malta as an altarpiece and measuring 370 by 520 centimetres (150 in × 200 in) was the largest altarpiece Caravaggio painted. It still hangs in St. John's Co-Cathedral, for which it was commissioned and where Caravaggio himself was inducted and briefly served as a knight. Yet, by late August 1608, he was arrested and imprisoned, likely the result of yet another brawl, this time with an aristocratic knight, during which the door of a house was battered down and the knight seriously wounded. Caravaggio was imprisoned by the Knights at Valletta, but he managed to escape. By December, he had been expelled from the Order "as a foul and rotten member", a formal phrase used in all such cases. Caravaggio made his way to Sicily where he met his old friend Mario Minniti, who was now married and living in Syracuse. Together they set off on what amounted to a triumphal tour from Syracuse to Messina and, maybe, on to the island capital, Palermo. In Syracuse and Messina Caravaggio continued to win prestigious and well-paid commissions. Among other works from this period are Burial of St. Lucy, The Raising of Lazarus, and Adoration of the Shepherds. His style continued to evolve, showing now friezes of figures isolated against vast empty backgrounds. "His great Sicilian altarpieces isolate their shadowy, pitifully poor figures in vast areas of darkness; they suggest the desperate fears and frailty of man, and at the same time convey, with a new yet desolate tenderness, the beauty of humility and of the meek, who shall inherit the earth." Contemporary reports depict a man whose behaviour was becoming increasingly bizarre, which included sleeping fully armed and in his clothes, ripping up a painting at a slight word of criticism, and mocking local painters. Caravaggio displayed bizarre behaviour from very early in his career. Mancini describes him as "extremely crazy", a letter from Del Monte notes his strangeness, and Minniti's 1724 biographer says that Mario left Caravaggio because of his behaviour. The strangeness seems to have increased after Malta. Susinno's early-18th-century Le vite de' pittori Messinesi ("Lives of the Painters of Messina") provides several colourful anecdotes of Caravaggio's erratic behaviour in Sicily, and these are reproduced in modern full-length biographies such as Langdon and Robb. Bellori writes of Caravaggio's "fear" driving him from city to city across the island and finally, "feeling that it was no longer safe to remain", back to Naples. Baglione says Caravaggio was being "chased by his enemy", but like Bellori does not say who this enemy was. After only nine months in Sicily, Caravaggio returned to Naples in the late summer of 1609. According to his earliest biographer, he was being pursued by enemies while in Sicily and felt it safest to place himself under the protection of the Colonnas until he could secure his pardon from the pope (now Paul V) and return to Rome. In Naples he painted The Denial of Saint Peter, a final John the Baptist (Borghese), and his last picture, The Martyrdom of Saint Ursula. His style continued to evolve—Saint Ursula is caught in a moment of highest action and drama, as the arrow fired by the king of the Huns strikes her in the breast, unlike earlier paintings that had all the immobility of the posed models. The brushwork was also much freer and more impressionistic. In October 1609 he was involved in a violent clash, an attempt on his life, perhaps ambushed by men in the pay of the knight he had wounded in Malta or some other faction of the Order. His face was seriously disfigured and rumours circulated in Rome that he was dead. He painted a Salome with the Head of John the Baptist (Madrid), showing his own head on a platter, and sent it to Wignacourt as a plea for forgiveness. Perhaps at this time, he also painted a David with the Head of Goliath, showing the young David with a strangely sorrowful expression gazing at the severed head of the giant, which is again Caravaggio. This painting he may have sent to his patron, the unscrupulous art-loving Cardinal Scipione Borghese, nephew of the pope, who had the power to grant or withhold pardons. Caravaggio hoped Borghese could mediate a pardon in exchange for works by the artist. News from Rome encouraged Caravaggio, and in the summer of 1610, he took a boat northwards to receive the pardon, which seemed imminent thanks to his powerful Roman friends. With him were three last paintings, the gifts for Cardinal Scipione. What happened next is the subject of much confusion and conjecture, shrouded in much mystery. The bare facts seem to be that on 28 July, an anonymous avviso (private newsletter) from Rome to the ducal court of Urbino reported that Caravaggio was dead. Three days later, another avviso said that he had died of fever on his way from Naples to Rome. A poet friend of the artist later gave 18 July as the date of death, and a recent researcher claims to have discovered a death notice showing that the artist died on that day of a fever in Porto Ercole, near Grosseto in Tuscany. Caravaggio had a fever at the time of his death, and what killed him was a matter of controversy and rumour at the time, and has been a matter of historical debate and study since. Contemporary rumors held that either the Tommasoni family or the Knights had him killed in revenge. Traditionally historians have long thought he died of syphilis. Some have said he had malaria, or possibly brucellosis from unpasteurised dairy. Some scholars have argued that Caravaggio was actually attacked and killed by the same "enemies" that had been pursuing him since he fled Malta, possibly Wignacourt and/or factions of the Knights. Caravaggio's remains were buried in Porto Ercole's San Sebastiano cemetery, which closed in 1956, and then moved to St. Erasmus cemetery, where, in 2010, archaeologists conducted a year-long investigation of remains found in three crypts and after using DNA, carbon dating, and other methods, believe with a high degree of confidence that they have identified those of Caravaggio. Initial tests suggested Caravaggio might have died of lead poisoning—paints used at the time contained high amounts of lead salts, and Caravaggio is known to have indulged in violent behavior, as caused by lead poisoning. Later research concluded he died as the result of a wound sustained in a brawl in Naples, specifically from sepsis caused by Staphylococcus aureus. Vatican documents released in 2002 support the theory that the wealthy Tommasoni family had him hunted down and killed as a vendetta for Caravaggio's murder of gangster Ranuccio Tommasoni, in a botched attempt at castration after a duel over the affections of model Fillide Melandroni. Since the 1970s art scholars and historians have debated the inferences of homoeroticism in Caravaggio's works as a way to better understand the man. Caravaggio never married and had no known children, and Howard Hibbard observed the absence of erotic female figures in the artist's oeuvre: "In his entire career he did not paint a single female nude", and the cabinet-pieces from the Del Monte period are replete with "full-lipped, languorous boys ... who seem to solicit the onlooker with their offers of fruit, wine, flowers—and themselves" suggesting an erotic interest in the male form. The model of Amor vincit omnia, Cecco del Caravaggio, lived with the artist in Rome and stayed with him even after he was obliged to leave the city in 1606. The two may have been lovers. A connection with a certain Lena is mentioned in a 1605 court deposition by Pasqualone, where she is described as "Michelangelo's girl". According to G. B. Passeri, this 'Lena' was Caravaggio's model for the Madonna di Loreto; and according to Catherine Puglisi, 'Lena' may have been the same person as the courtesan Maddalena di Paolo Antognetti, who named Caravaggio as an "intimate friend" by her own testimony in 1604. Caravaggio was also rumored to be madly in love with Fillide Melandroni, a well known Roman prostitute who modeled for him in several important paintings. Caravaggio's sexuality also received early speculation due to claims about the artist by Honoré Gabriel Riqueti, comte de Mirabeau. Writing in 1783, Mirabeau contrasted the personal life of Caravaggio directly with the writings of St Paul in the Book of Romans, arguing that "Romans" excessively practice sodomy or homosexuality. The Holy Mother Catholic Church teachings on morality (and so on; short book title) contains the Latin phrase "Et fœminæ eorum immutaverunt naturalem usum in eum usum qui est contra naturam." ("and their women changed their natural habit to that which is against nature"). The phrase, according to Mirabeau, entered Caravaggio's thoughts, and he claimed that such an "abomination" could be witnessed through a particular painting housed at the Museum of the Grand Duke of Tuscany—featuring a rosary of a blasphemous nature, in which a circle of thirty men (turpiter ligati) are intertwined in embrace and presented in unbridled composition. Mirabeau notes the affectionate nature of Caravaggio's depiction reflects the voluptuous glow of the artist's sexuality. By the late nineteenth century, Sir Richard Francis Burton identified the painting as Caravaggio's painting of St. Rosario. Burton also identifies both St. Rosario and this painting with the practices of Tiberius mentioned by Seneca the Younger. The survival status and location of Caravaggio's painting is unknown. No such painting appears in his or his school's catalogues. Aside from the paintings, evidence also comes from the libel trial brought against Caravaggio by Giovanni Baglione in 1603. Baglione accused Caravaggio and his friends of writing and distributing scurrilous doggerel attacking him; the pamphlets, according to Baglione's friend and witness Mao Salini, had been distributed by a certain Giovanni Battista, a bardassa, or boy prostitute, shared by Caravaggio and his friend Onorio Longhi. Caravaggio denied knowing any young boy of that name, and the allegation was not followed up. Baglione's painting of "Divine Love" has also been seen as a visual accusation of sodomy against Caravaggio. Such accusations were damaging and dangerous as sodomy was a capital crime at the time. Even though the authorities were unlikely to investigate such a well-connected person as Caravaggio, "Once an artist had been smeared as a pederast, his work was smeared too." Francesco Susino in his later biography additionally relates the story of how the artist was chased by a schoolmaster in Sicily for spending too long gazing at the boys in his care. Susino presents it as a misunderstanding, but some authors have speculated that Caravaggio may indeed have been seeking sex with the boys, using the incident to explain some of his paintings which they believe to be homoerotic. The art historian Andrew Graham-Dixon has summarised the debate: A lot has been made of Caravaggio's presumed homosexuality, which has in more than one previous account of his life been presented as the single key that explains everything, both the power of his art and the misfortunes of his life. There is no absolute proof of it, only strong circumstantial evidence and much rumour. The balance of probability suggests that Caravaggio did indeed have sexual relations with men. But he certainly had female lovers. Throughout the years that he spent in Rome, he kept close company with a number of prostitutes. The truth is that Caravaggio was as uneasy in his relationships as he was in most other aspects of life. He likely slept with men. He did sleep with women. He settled with no one... [but] the idea that he was an early martyr to the drives of an unconventional sexuality is an anachronistic fiction. Washington Post art critic Philip Kennicott has taken issue with what he regarded as Graham-Dixon's minimizing of Caravaggio's homosexuality: There was a fussiness to the tone whenever a scholar or curator was forced to grapple with transgressive sexuality, and you can still find it even in relatively recent histories, including Andrew Graham-Dixon's 2010 biography of Caravaggio, which acknowledges only that "he likely slept with men". The author notes the artist's fluid sexual desires but gives some of Caravaggio's most explicitly homoerotic paintings tortured readings to keep them safely in the category of mere "ambiguity". Caravaggio "put the oscuro (shadows) into chiaroscuro". Chiaroscuro was practised long before he came on the scene, but it was Caravaggio who made the technique a dominant stylistic element, darkening the shadows and transfixing the subject in a blinding shaft of light. With this came the acute observation of physical and psychological reality that formed the ground both for his immense popularity and for his frequent problems with his religious commissions. He worked at great speed, from live models, scoring basic guides directly onto the canvas with the end of the brush handle; very few of Caravaggio's drawings appear to have survived, and it is likely that he preferred to work directly on the canvas. The approach was anathema to the skilled artists of his day, who decried his refusal to work from drawings and to idealise his figures. Yet the models were basic to his realism. Some have been identified, including Mario Minniti and Francesco Boneri, both fellow artists, Minniti appearing as various figures in the early secular works, the young Boneri as a succession of angels, Baptists and Davids in the later canvasses. His female models include Fillide Melandroni, Anna Bianchini, and Maddalena Antognetti (the "Lena" mentioned in court documents of the "artichoke" case as Caravaggio's concubine), all well-known prostitutes, who appear as female religious figures including the Virgin and various saints. Caravaggio himself appears in several paintings, his final self-portrait being as the witness on the far right to the Martyrdom of Saint Ursula. Caravaggio had a noteworthy ability to express in one scene of unsurpassed vividness the passing of a crucial moment. The Supper at Emmaus depicts the recognition of Christ by his disciples: a moment before he is a fellow traveller, mourning the passing of the Messiah, as he never ceases to be to the innkeeper's eyes; the second after, he is the Saviour. In The Calling of St Matthew, the hand of the Saint points to himself as if he were saying, "who, me?", while his eyes, fixed upon the figure of Christ, have already said, "Yes, I will follow you". With The Resurrection of Lazarus, he goes a step further, giving a glimpse of the actual physical process of resurrection. The body of Lazarus is still in the throes of rigour mortis, but his hand, facing and recognising that of Christ, is alive. Other major Baroque artists would travel the same path, for example Bernini, fascinated with themes from Ovid's Metamorphoses. The installation of the St. Matthew paintings in the Contarelli Chapel had an immediate impact among the younger artists in Rome, and Caravaggism became the cutting edge for every ambitious young painter. The first Caravaggisti included Orazio Gentileschi and Giovanni Baglione. Baglione's Caravaggio phase was short-lived; Caravaggio later accused him of plagiarism and the two were involved in a long feud. Baglione went on to write the first biography of Caravaggio. In the next generation of Caravaggisti, there were Carlo Saraceni, Bartolomeo Manfredi and Orazio Borgianni. Gentileschi, despite being considerably older, was the only one of these artists to live much beyond 1620 and ended up as a court painter to Charles I of England. His daughter Artemisia Gentileschi was also stylistically close to Caravaggio and one of the most gifted of the movement. Yet, in Rome and in Italy, it was not Caravaggio, but the influence of his rival Annibale Carracci, blending elements from the High Renaissance and Lombard realism, which ultimately triumphed. Caravaggio's brief stay in Naples produced a notable school of Neapolitan Caravaggisti, including Battistello Caracciolo and Carlo Sellitto. The Caravaggisti movement there ended with a terrible outbreak of plague in 1656, but the Spanish connection—Naples was a possession of Spain—was instrumental in forming the important Spanish branch of his influence. Rubens was likely one of the first Flemish artists to be influenced by Caravaggio whose work he got to know during his stay in Rome in 1601. He later painted a copy (or rather an interpretation) of Caravaggio's Entombment of Christ and recommended his patron, the Duke of Mantua, to purchase The Death of the Virgin (Louvre). Although some of this interest in Caravaggio is reflected in his drawings during his Italian residence, it was only after his return to Antwerp in 1608 that Rubens' works show openly Caravaggesque traits such as in the Cain slaying Abel (1608–1609) (Courtauld Institute of Art) and the Old Woman and Boy with Candles (1618–1619) (Mauritshuis). However, the influence of Caravaggio on Rubens' work would be less important than that of Raphael, Correggio, Barocci and the Venetians. Flemish artists, who were influenced by Rubens, such as Jacob Jordaens, Pieter van Mol, Gaspar de Crayer and Willem Jacob Herreyns, also used certain stark realism and strong contrasts of light and shadow, common to the Caravaggesque style. A number of Catholic artists from Utrecht, including Hendrick ter Brugghen, Gerrit van Honthorst and Dirck van Baburen travelled in the first decades of the 17th century to Rome. Here they became profoundly influenced by the work of Caravaggio and his followers. On their return to Utrecht, their Caravaggesque works inspired a short-lived but influential flowering of artworks inspired indirectly in style and subject matter by the works of Caravaggio and the Italian followers of Caravaggio. This style of painting was later referred to as Utrecht Caravaggism. In the following generation of Dutch artists the effects of Caravaggio, although attenuated, are to be seen in the work of Vermeer and Rembrandt, neither of whom visited Italy. Caravaggio's innovations inspired the Baroque, but the Baroque took the drama of his chiaroscuro without the psychological realism. While he directly influenced the style of the artists mentioned above, and, at a distance, the Frenchmen Georges de La Tour and Simon Vouet, and the Spaniard Giuseppe Ribera, within a few decades his works were being ascribed to less scandalous artists, or simply overlooked. The Baroque, to which he contributed so much, had evolved, and fashions had changed, but perhaps more pertinently, Caravaggio never established a workshop as the Carracci did and thus had no school to spread his techniques. Nor did he ever set out his underlying philosophical approach to art, the psychological realism that may only be deduced from his surviving work. Thus his reputation was doubly vulnerable to the unsympathetic critiques of his earliest biographers, Giovanni Baglione, a rival painter with a vendetta, and the influential 17th-century critic Gian Pietro Bellori, who had not known him but was under the influence of the earlier Giovanni Battista Agucchi and Bellori's friend Poussin, in preferring the "classical-idealistic" tradition of the Bolognese school led by the Carracci. Baglione, his first biographer, played a considerable part in creating the legend of Caravaggio's unstable and violent character, as well as his inability to draw. In the 1920s, art critic Roberto Longhi brought Caravaggio's name once more to the foreground and placed him in the European tradition: "Ribera, Vermeer, La Tour and Rembrandt could never have existed without him. And the art of Delacroix, Courbet and Manet would have been utterly different". The influential Bernard Berenson agreed: "With the exception of Michelangelo, no other Italian painter exercised so great an influence." Caravaggio's epitaph was composed by his friend Marzio Milesi. It reads: "Michelangelo Merisi, son of Fermo di Caravaggio – in painting not equal to a painter, but to Nature itself – died in Port' Ercole – betaking himself hither from Naples – returning to Rome – 15th calend of August – In the year of our Lord 1610 – He lived thirty-six years nine months and twenty days – Marzio Milesi, Jurisconsult – Dedicated this to a friend of extraordinary genius." He was commemorated on the front of the Banca d'Italia 100,000-lire banknote in the 1980s and '90s (before Italy switched to the euro) with the back showing his Basket of Fruit. There is disagreement as to the size of Caravaggio's oeuvre, with counts as low as 40 and as high as 80. In his biography, Caravaggio scholar Alfred Moir writes, "The forty-eight color plates in this book include almost all of the surviving works accepted by every Caravaggio expert as autograph, and even the least demanding would add fewer than a dozen more". One, The Calling of Saints Peter and Andrew, was in 2006 authenticated and restored; it had been in storage in Hampton Court, mislabeled as a copy. Richard Francis Burton writes of a "picture of St. Rosario (in the museum of the Grand Duke of Tuscany), showing a circle of thirty men turpiter ligati" ("lewdly banded"), which is not known to have survived. The rejected version of Saint Matthew and the Angel, intended for the Contarelli Chapel in San Luigi dei Francesi in Rome, was destroyed during the bombing of Dresden, though black and white photographs of the work exist. In June 2011 it was announced that a previously unknown Caravaggio painting of Saint Augustine dating to about 1600 had been discovered in a private collection in Britain. Called a "significant discovery", the painting had never been published and is thought to have been commissioned by Vincenzo Giustiniani, a patron of the painter in Rome. A painting depicting Judith Beheading Holofernes was allegedly discovered in an attic in Toulouse in 2014. In April 2016 the expert and art dealer to whom the work was shown announced that this was a long-lost painting by the hand of Caravaggio himself. That lost Caravaggio painting was only known up to that date by a presumed copy of it by the Flemish painter Louis Finson, who had shared a studio with Caravaggio in Naples. The French government imposed an export ban on the newly discovered painting while tests were carried out to establish whether it was an authentic painting by Caravaggio. In February 2019 it was announced that the painting would be sold at auction after the Louvre had turned down the opportunity to purchase it for €100 million. After an auction was considered, the painting was finally sold in a private sale to the American billionaire hedge fund manager J. Tomilson Hill. The art historical world is not united over the attribution of the work, with the art dealer who sold the work promoting its authenticity with the support of art historians who were given privileged access to the work, while other art historians remain unconvinced mainly based on stylistic and quality considerations. Some art historians believe it may be a work by Louis Finson himself. In April 2021 a minor work believed to be from the circle of a Spanish follower of Caravaggio, Jusepe de Ribera, was withdrawn from sale at the Madrid auction house Ansorena when the Museo del Prado alerted the Ministry of Culture, which placed a preemptive export ban on the painting. The 111 centimetres (44 in) by 86 centimetres (34 in) painting has been in the Pérez de Castro family since 1823, when it was exchanged for another work from the Real Academia of San Fernando. It had been listed as "Ecce-Hommo con dos saiones de Carabaggio" before the attribution was later lost or changed to the circle of Ribera. Stylistic evidence, as well as the similarity of the models to those in other Caravaggio works, has convinced some experts that the painting is the original Caravaggio 'Ecce Homo' for the 1605 Massimo Massimi commission. The attribution to Caravaggio is disputed by other experts. The painting is now undergoing restoration by Colnaghis, who will also be handling the future sale of the work. In October 1969, two thieves entered the Oratory of Saint Lawrence in Palermo, Sicily, and stole Caravaggio's Nativity with St. Francis and St. Lawrence from its frame. Experts estimated its value at $20 million. Following the theft, Italian police set up an art theft task force with the specific aim of re-acquiring lost and stolen artworks. Since the creation of this task force, many leads have been followed regarding the Nativity. Former Italian mafia members have stated that Nativity with St. Francis and St. Lawrence was stolen by the Sicilian Mafia and displayed at important mafia gatherings. Former mafia members have said that the Nativity was damaged and has since been destroyed. The whereabouts of the painting are still unknown. A reproduction currently hangs in its place in the Oratory of San Lorenzo. Caravaggio's work has been widely influential in late-20th-century American gay culture, with frequent references to male sexual imagery in paintings such as The Musicians and Amor Victorious. British filmmaker Derek Jarman made a critically applauded biopic entitled Caravaggio in 1986. Several poems written by Thom Gunn were responses to specific Caravaggio paintings. In 2013, a touring Caravaggio exhibition called "Burst of Light: Caravaggio and His Legacy" opened in the Wadsworth Atheneum Museum of Art in Hartford, Connecticut. The show included five paintings by the master artist that included Saint John the Baptist in the Wilderness (1604–1605) and Martha and Mary Magdalene (1589). The whole travelled to France and also to Los Angeles, California. Other Baroque artists like Georges de La Tour, Orazio Gentileschi, and the Spanish trio of Diego Velazquez, Francisco de Zurbaran, and Carlo Saraceni were also included in the exhibitions. In 2022 a new biopic about Caravaggio was released: L'Ombra di Caravaggio, an Italian-French movie directed by Michele Placido. The main primary sources for Caravaggio's life are: All have been reprinted in Howard Hibbard's Caravaggio and in the appendices to Catherine Puglisi's Caravaggio.	[ { "paragraph_id": 0, "text": "Michelangelo Merisi (Michele Angelo Merigi or Amerighi) da Caravaggio, known as simply Caravaggio (/ˌkærəˈvædʒioʊ/, US: /-ˈvɑːdʒ(i)oʊ/, Italian: [mikeˈlandʒelo meˈriːzi da (k)karaˈvaddʒo]; 29 September 1571 – 18 July 1610), was an Italian painter active in Rome for most of his artistic life. During the final four years of his life he moved between Naples, Malta, and Sicily until his death. His paintings have been characterized by art critics as combining a realistic observation of the human state, both physical and emotional, with a dramatic use of lighting, which had a formative influence on Baroque painting.", "title": "" }, { "paragraph_id": 1, "text": "Caravaggio employed close physical observation with a dramatic use of chiaroscuro that came to be known as tenebrism. He made the technique a dominant stylistic element, transfixing subjects in bright shafts of light and darkening shadows. Caravaggio vividly expressed crucial moments and scenes, often featuring violent struggles, torture, and death. He worked rapidly with live models, preferring to forgo drawings and work directly onto the canvas. His inspiring effect on the new Baroque style that emerged from Mannerism was profound. His influence can be seen directly or indirectly in the work of Peter Paul Rubens, Jusepe de Ribera, Gian Lorenzo Bernini, and Rembrandt. Artists heavily under his influence were called the \"Caravaggisti\" (or \"Caravagesques\"), as well as tenebrists or tenebrosi (\"shadowists\").", "title": "" }, { "paragraph_id": 2, "text": "Caravaggio trained as a painter in Milan before moving to Rome when he was in his twenties. He developed a considerable name as an artist and as a violent, touchy and provocative man. He killed Ranuccio Tommasoni in a brawl, which led to a death sentence for murder and forced him to flee to Naples. There he again established himself as one of the most prominent Italian painters of his generation. He travelled to Malta and on to Sicily in 1607 and pursued a papal pardon for his sentence. In 1609 he returned to Naples, where he was involved in a violent clash; his face was disfigured, and rumours of his death circulated. Questions about his mental state arose from his erratic and bizarre behavior. He died in 1610 under uncertain circumstances while on his way from Naples to Rome. Reports stated that he died of a fever, but suggestions have been made that he was murdered or that he died of lead poisoning.", "title": "" }, { "paragraph_id": 3, "text": "Caravaggio's innovations inspired Baroque painting, but the latter incorporated the drama of his chiaroscuro without the psychological realism. The style evolved and fashions changed, and Caravaggio fell out of favour. In the 20th century, interest in his work revived, and his importance to the development of Western art was reevaluated. The 20th-century art historian André Berne-Joffroy [fr] stated: \"What begins in the work of Caravaggio is, quite simply, modern painting.\"", "title": "" }, { "paragraph_id": 4, "text": "Caravaggio (Michelangelo Merisi or Amerighi) was born in Milan, where his father, Fermo (Fermo Merixio), was a household administrator and architect-decorator to the Marchese of Caravaggio, a town 35 km to the east of Milan and south of Bergamo. In 1576 the family moved to Caravaggio (Caravaggius) to escape a plague that ravaged Milan, and Caravaggio's father and grandfather both died there on the same day in 1577. It is assumed that the artist grew up in Caravaggio, but his family kept up connections with the Sforzas and the powerful Colonna family, who were allied by marriage with the Sforzas and destined to play a major role later in Caravaggio's life.", "title": "Biography" }, { "paragraph_id": 5, "text": "Caravaggio's mother had to raise all of her five children in poverty. She later died in 1584, the same year he began his four-year apprenticeship to the Milanese painter Simone Peterzano, described in the contract of apprenticeship as a pupil of Titian. Caravaggio appears to have stayed in the Milan-Caravaggio area after his apprenticeship ended, but it is possible that he visited Venice and saw the works of Giorgione, whom Federico Zuccari later accused him of imitating, and Titian. He would also have become familiar with the art treasures of Milan, including Leonardo da Vinci's Last Supper, and with the regional Lombard art, a style that valued simplicity and attention to naturalistic detail and was closer to the naturalism of Germany than to the stylised formality and grandeur of Roman Mannerism.", "title": "Biography" }, { "paragraph_id": 6, "text": "Following his initial training under Simone Peterzano, in 1592, Caravaggio left Milan for Rome in flight after \"certain quarrels\" and the wounding of a police officer. The young artist arrived in Rome \"naked and extremely needy... without fixed address and without provision... short of money.\" During this period, he stayed with the miserly Pandolfo Pucci, known as \"monsignor Insalata\". A few months later he was performing hack-work for the highly successful Giuseppe Cesari, Pope Clement VIII's favourite artist, \"painting flowers and fruit\" in his factory-like workshop.", "title": "Biography" }, { "paragraph_id": 7, "text": "In Rome, there was a demand for paintings to fill the many huge new churches and palazzi being built at the time. It was also a period when the Church was searching for a stylistic alternative to Mannerism in religious art that was tasked to counter the threat of Protestantism. Caravaggio's innovation was a radical naturalism that combined close physical observation with a dramatic, even theatrical, use of chiaroscuro that came to be known as tenebrism (the shift from light to dark with little intermediate value).", "title": "Biography" }, { "paragraph_id": 8, "text": "Known works from this period include a small Boy Peeling a Fruit (his earliest known painting), a Boy with a Basket of Fruit, and the Young Sick Bacchus, supposedly a self-portrait done during convalescence from a serious illness that ended his employment with Cesari. All three demonstrate the physical particularity for which Caravaggio was to become renowned: the fruit-basket-boy's produce has been analysed by a professor of horticulture, who was able to identify individual cultivars right down to \"...a large fig leaf with a prominent fungal scorch lesion resembling anthracnose (Glomerella cingulata).\"", "title": "Biography" }, { "paragraph_id": 9, "text": "Caravaggio left Cesari, determined to make his own way after a heated argument. At this point he forged some extremely important friendships, with the painter Prospero Orsi, the architect Onorio Longhi, and the sixteen-year-old Sicilian artist Mario Minniti. Orsi, established in the profession, introduced him to influential collectors; Longhi, more balefully, introduced him to the world of Roman street brawls. Minniti served Caravaggio as a model and, years later, would be instrumental in helping him to obtain important commissions in Sicily. Ostensibly, the first archival reference to Caravaggio in a contemporary document from Rome is the listing of his name, with that of Prospero Orsi as his partner, as an 'assistant' in a procession in October 1594 in honour of St. Luke. The earliest informative account of his life in the city is a court transcript dated 11 July 1597, when Caravaggio and Prospero Orsi were witnesses to a crime near San Luigi de' Francesi.", "title": "Biography" }, { "paragraph_id": 10, "text": "The Fortune Teller, his first composition with more than one figure, shows a boy, likely Minniti, having his palm read by a Romani girl, who is stealthily removing his ring as she strokes his hand. The theme was quite new for Rome and proved immensely influential over the next century and beyond. However, at the time, Caravaggio sold it for practically nothing. The Cardsharps—showing another naïve youth of privilege falling the victim of card cheats—is even more psychologically complex and perhaps Caravaggio's first true masterpiece. Like The Fortune Teller, it was immensely popular, and over 50 copies survived. More importantly, it attracted the patronage of Cardinal Francesco Maria del Monte, one of the leading connoisseurs in Rome. For Del Monte and his wealthy art-loving circle, Caravaggio executed a number of intimate chamber-pieces—The Musicians, The Lute Player, a tipsy Bacchus, an allegorical but realistic Boy Bitten by a Lizard—featuring Minniti and other adolescent models.", "title": "Biography" }, { "paragraph_id": 11, "text": "Caravaggio's first paintings on religious themes returned to realism and the emergence of remarkable spirituality. The first of these was the Penitent Magdalene, showing Mary Magdalene at the moment when she has turned from her life as a courtesan and sits weeping on the floor, her jewels scattered around her. \"It seemed not a religious painting at all ... a girl sitting on a low wooden stool drying her hair ... Where was the repentance ... suffering ... promise of salvation?\" It was understated, in the Lombard manner, not histrionic in the Roman manner of the time. It was followed by others in the same style: Saint Catherine; Martha and Mary Magdalene; Judith Beheading Holofernes; a Sacrifice of Isaac; a Saint Francis of Assisi in Ecstasy; and a Rest on the Flight into Egypt. These works, while viewed by a comparatively limited circle, increased Caravaggio's fame with both connoisseurs and his fellow artists. But a true reputation would depend on public commissions, for which it was necessary to look to the Church.", "title": "Biography" }, { "paragraph_id": 12, "text": "Already evident was the intense realism or naturalism for which Caravaggio is now famous. He preferred to paint his subjects as the eye sees them, with all their natural flaws and defects, instead of as idealised creations. This allowed a full display of his virtuosic talents. This shift from accepted standard practice and the classical idealism of Michelangelo was very controversial at the time. Caravaggio also dispensed with the lengthy preparations traditional in central Italy at the time. Instead, he preferred the Venetian practice of working in oils directly from the subject—half-length figures and still life. Supper at Emmaus, from c. 1600–1601, is a characteristic work of this period demonstrating his virtuoso talent.", "title": "Biography" }, { "paragraph_id": 13, "text": "In 1599, presumably through the influence of Del Monte, Caravaggio was contracted to decorate the Contarelli Chapel in the church of San Luigi dei Francesi. The two works making up the commission, The Martyrdom of Saint Matthew and The Calling of Saint Matthew, delivered in 1600, were an immediate sensation. Thereafter he never lacked commissions or patrons.", "title": "Biography" }, { "paragraph_id": 14, "text": "Caravaggio's tenebrism (a heightened chiaroscuro) brought high drama to his subjects, while his acutely observed realism brought a new level of emotional intensity. Opinion among his artist peers was polarised. Some denounced him for various perceived failings, notably his insistence on painting from life, without drawings, but for the most part, he was hailed as a great artistic visionary: \"The painters then in Rome were greatly taken by this novelty, and the young ones particularly gathered around him, praised him as the unique imitator of nature, and looked on his work as miracles.\"", "title": "Biography" }, { "paragraph_id": 15, "text": "Caravaggio went on to secure a string of prestigious commissions for religious works featuring violent struggles, grotesque decapitations, torture and death. Most notable and technically masterful among them were The Incredulity of Saint Thomas (circa 1601) and The Taking of Christ (circa 1602) for the Mattei family, which were only rediscovered in the 1990s in Trieste and in Dublin after remaining unrecognised for two centuries. For the most part, each new painting increased his fame, but a few were rejected by the various bodies for whom they were intended, at least in their original forms, and had to be re-painted or found new buyers. The essence of the problem was that while Caravaggio's dramatic intensity was appreciated, his realism was seen by some as unacceptably vulgar.", "title": "Biography" }, { "paragraph_id": 16, "text": "His first version of Saint Matthew and the Angel, featuring the saint as a bald peasant with dirty legs attended by a lightly clad over-familiar boy-angel, was rejected and a second version had to be painted as The Inspiration of Saint Matthew. Similarly, The Conversion of Saint Paul was rejected, and while another version of the same subject, the Conversion on the Way to Damascus, was accepted, it featured the saint's horse's haunches far more prominently than the saint himself, prompting this exchange between the artist and an exasperated official of Santa Maria del Popolo: \"Why have you put a horse in the middle, and Saint Paul on the ground?\" \"Because!\" \"Is the horse God?\" \"No, but he stands in God's light!\"", "title": "Biography" }, { "paragraph_id": 17, "text": "The aristocratic collector Ciriaco Mattei, brother of Cardinal Girolamo Mattei, who was friends with Cardinal Francesco Maria Bourbon Del Monte, gave The Supper at Emmaus for the city palace he shared with his brother, 1601 (National Gallery, London), The Incredulity of Saint Thomas, c. 1601, \"Ecclesiastical Version\" (Private Collection, Florence), The Incredulity of Saint Thomas c. 1601, 1601 \"Secular Version\" (Sanssouci Palace, Potsdam), John the Baptist with the Ram, 1602 (Capitoline Museums, Rome) and The Taking of Christ, 1602 (National Gallery of Ireland, Dublin) Caravaggio commissioned.", "title": "Biography" }, { "paragraph_id": 18, "text": "The second version of The Taking of Christ, which was looted from the Odessa Museum in 2008 and recovered in 2010, is believed by some experts to be a contemporary copy.", "title": "Biography" }, { "paragraph_id": 19, "text": "The Incredulity of Saint Thomas is one of the most famous paintings by the Italian baroque master Caravaggio, circa 1601–1602. There are two autograph versions of Caravaggio's \"The Incredulity of Saint Thomas\", an ecclesiastical \"Trieste\" version for Girolamo Mattei now in a private collection and a secular \"Potsdam\" version for Vincenzo Giustiniani (Pietro Bellori) and later entered the Prussian Royal Collection and survived the Second World War unscathed and can be admired in the Palais in Sanssouci, Potsdam.", "title": "Biography" }, { "paragraph_id": 20, "text": "It depicts the episode that led to the term \"Doubting Thomas\", officially known as \"The Incredulity of Saint Thomas\", which has been frequently depicted and used to make various theological statements in Christian art since at least the 5th century. According to the Gospel of John, Thomas the Apostle missed one of Jesus' appearances to the apostles after his resurrection and said, \"Unless I see the marks of the nails in his hands, and put my finger where the nails were, and put my hand into his side, I will not believe it.\" A week later, Jesus appeared and told Thomas to touch him and stop doubting. Then Jesus said, \"Because you have seen me, you have believed; blessed are those who have not seen and yet have believed.\"", "title": "Biography" }, { "paragraph_id": 21, "text": "The two pictures show in a demonstrative gesture how the doubting apostle puts his finger into Christ's side wound, the latter guiding his hand. The unbeliever is depicted like a peasant, dressed in a robe torn at the shoulder and with dirt under his fingernails. The composition of the picture is designed in such a way that the viewer is directly involved in the event and feels the intensity of the event as it were.", "title": "Biography" }, { "paragraph_id": 22, "text": "It should also be noted that in the ecclesiastical version of the unbelieving Thomas, Christ's thigh is shown to be covered, whereas in the secular version of the painting, Christ's thigh is visible.", "title": "Biography" }, { "paragraph_id": 23, "text": "Other works included Entombment, the Madonna di Loreto (\"Madonna of the Pilgrims\"), the Grooms' Madonna, and the Death of the Virgin. The history of these last two paintings illustrates the reception given to some of Caravaggio's art and the times in which he lived. The Grooms' Madonna, also known as Madonna dei palafrenieri, painted for a small altar in Saint Peter's Basilica in Rome, remained there for just two days and was then taken off. A cardinal's secretary wrote: \"In this painting, there are but vulgarity, sacrilege, impiousness and disgust...One would say it is a work made by a painter that can paint well, but of a dark spirit, and who has been for a lot of time far from God, from His adoration, and from any good thought...\"", "title": "Biography" }, { "paragraph_id": 24, "text": "The Death of the Virgin, commissioned in 1601 by a wealthy jurist for his private chapel in the new Carmelite church of Santa Maria della Scala, was rejected by the Carmelites in 1606. Caravaggio's contemporary Giulio Mancini records that it was rejected because Caravaggio had used a well-known prostitute as his model for the Virgin. Giovanni Baglione, another contemporary, tells that it was due to Mary's bare legs—a matter of decorum in either case. Caravaggio scholar John Gash suggests that the problem for the Carmelites may have been theological rather than aesthetic, in that Caravaggio's version fails to assert the doctrine of the Assumption of Mary, the idea that the Mother of God did not die in any ordinary sense but was assumed into Heaven. The replacement altarpiece commissioned (from one of Caravaggio's most able followers, Carlo Saraceni), showed the Virgin not dead, as Caravaggio had painted her, but seated and dying; and even this was rejected, and replaced with a work showing the Virgin not dying, but ascending into Heaven with choirs of angels. In any case, the rejection did not mean that Caravaggio or his paintings were out of favour. The Death of the Virgin was no sooner taken out of the church than it was purchased by the Duke of Mantua, on the advice of Rubens, and later acquired by Charles I of England before entering the French royal collection in 1671.", "title": "Biography" }, { "paragraph_id": 25, "text": "One secular piece from these years is Amor Vincit Omnia, in English also called Amor Victorious, painted in 1602 for Vincenzo Giustiniani, a member of Del Monte's circle. The model was named in a memoir of the early 17th century as \"Cecco\", the diminutive for Francesco. He is possibly Francesco Boneri, identified with an artist active in the period 1610–1625 and known as Cecco del Caravaggio ('Caravaggio's Cecco'), carrying a bow and arrows and trampling symbols of the warlike and peaceful arts and sciences underfoot. He is unclothed, and it is difficult to accept this grinning urchin as the Roman god Cupid—as difficult as it was to accept Caravaggio's other semi-clad adolescents as the various angels he painted in his canvases, wearing much the same stage-prop wings. The point, however, is the intense yet ambiguous reality of the work: it is simultaneously Cupid and Cecco, as Caravaggio's Virgins were simultaneously the Mother of Christ and the Roman courtesans who modeled for them.", "title": "Biography" }, { "paragraph_id": 26, "text": "Caravaggio led a tumultuous life. He was notorious for brawling, even in a time and place when such behavior was commonplace, and the transcripts of his police records and trial proceedings fill many pages.", "title": "Biography" }, { "paragraph_id": 27, "text": "Bellori claims that around 1590–1592, Caravaggio, already well known for brawling with gangs of young men, committed a murder which forced him to flee from Milan, first to Venice and then to Rome.", "title": "Biography" }, { "paragraph_id": 28, "text": "On 28 November 1600, while living at the Palazzo Madama with his patron Cardinal Del Monte, Caravaggio beat nobleman Girolamo Stampa da Montepulciano, a guest of the cardinal, with a club, resulting in an official complaint to the police. Episodes of brawling, violence, and tumult grew more and more frequent. Caravaggio was often arrested and jailed at Tor di Nona.", "title": "Biography" }, { "paragraph_id": 29, "text": "After his release from jail in 1601, Caravaggio returned to paint first The Taking of Christ and then Amor Vincit Omnia. In 1603, he was arrested again, this time for the defamation of another painter, Giovanni Baglione, who sued Caravaggio and his followers Orazio Gentileschi and Onorio Longhi for writing offensive poems about him. The French ambassador intervened, and Caravaggio was transferred to house arrest after a month in jail in Tor di Nona.", "title": "Biography" }, { "paragraph_id": 30, "text": "Between May and October 1604, Caravaggio was arrested several times for possession of illegal weapons and for insulting the city guards. He was also sued by a tavern waiter for having thrown a plate of artichokes in his face.", "title": "Biography" }, { "paragraph_id": 31, "text": "An early published notice on Caravaggio, dating from 1604 and describing his lifestyle three years previously, recounts that \"after a fortnight's work he will swagger about for a month or two with a sword at his side and a servant following him, from one ball-court to the next, ever ready to engage in a fight or an argument, so that it is most awkward to get along with him.\"", "title": "Biography" }, { "paragraph_id": 32, "text": "In 1605, Caravaggio was forced to flee to Genoa for three weeks after seriously injuring Mariano Pasqualone di Accumoli, a notary, in a dispute over Lena, Caravaggio's model and lover. The notary reported having been attacked on 29 July with a sword, causing a severe head injury. Caravaggio's patrons intervened and managed to cover up the incident.", "title": "Biography" }, { "paragraph_id": 33, "text": "Upon his return to Rome, Caravaggio was sued by his landlady Prudenzia Bruni for not having paid his rent. Out of spite, Caravaggio threw rocks through her window at night and was sued again.", "title": "Biography" }, { "paragraph_id": 34, "text": "In November, Caravaggio was hospitalized for an injury which he claimed he had caused himself by falling on his own sword.", "title": "Biography" }, { "paragraph_id": 35, "text": "On 29 May 1606, Caravaggio killed a young man, possibly unintentionally, resulting in him fleeing Rome with a death sentence hanging over him. Ranuccio Tommasoni was a gangster from a wealthy family. The two had argued many times, often ending in blows. The circumstances are unclear, whether a brawl or a duel with swords at Campo Marzio, but the killing may have been unintentional.", "title": "Biography" }, { "paragraph_id": 36, "text": "Many rumors circulated at the time as to the cause of the fight. Several contemporary avvisi referred to a quarrel over a gambling debt and a pallacorda game, a sort of tennis, and this explanation has become established in the popular imagination. Other rumors, however, claimed that the duel stemmed from jealousy over Fillide Melandroni, a well-known Roman prostitute who had modeled for him in several important paintings; Tommasoni was her pimp. According to such rumors, Caravaggio castrated Tommasoni with his sword before deliberately killing him, with other versions claiming that Tommasoni's death was caused accidentally during the castration. The duel may have had a political dimension, as Tommasoni's family was notoriously pro-Spanish, while Caravaggio was a client of the French ambassador.", "title": "Biography" }, { "paragraph_id": 37, "text": "Caravaggio's patrons had hitherto been able to shield him from any serious consequences of his frequent duels and brawling, but Tommasoni's wealthy family was outraged by his death and demanded justice. Caravaggio's patrons were unable to protect him. Caravaggio was sentenced to beheading for murder, and an open bounty was decreed, enabling anyone who recognized him to legally carry the sentence out. Caravaggio's paintings began to obsessively depict severed heads, often his own, at this time.", "title": "Biography" }, { "paragraph_id": 38, "text": "Good modern accounts are to be found in Peter Robb's M and Helen Langdon's Caravaggio: A Life. A theory relating the death to Renaissance notions of honour and symbolic wounding has been advanced by art historian Andrew Graham-Dixon. Whatever the details, it was a serious matter.", "title": "Biography" }, { "paragraph_id": 39, "text": "Caravaggio was forced to flee Rome. He moved just south of the city, then to Naples, Malta, and Sicily.", "title": "Biography" }, { "paragraph_id": 40, "text": "Following the death of Tomassoni, Caravaggio fled first to the estates of the Colonna family south of Rome, then on to Naples, where Costanza Colonna Sforza, widow of Francesco Sforza, in whose husband's household Caravaggio's father had held a position, maintained a palace. In Naples, outside the jurisdiction of the Roman authorities and protected by the Colonna family, the most famous painter in Rome became the most famous in Naples.", "title": "Biography" }, { "paragraph_id": 41, "text": "His connections with the Colonnas led to a stream of important church commissions, including the Madonna of the Rosary, and The Seven Works of Mercy. The Seven Works of Mercy depicts the seven corporal works of mercy as a set of compassionate acts concerning the material needs of others. The painting was made for and is still housed in the church of Pio Monte della Misericordia in Naples. Caravaggio combined all seven works of mercy in one composition, which became the church's altarpiece. Alessandro Giardino has also established the connection between the iconography of \"The Seven Works of Mercy\" and the cultural, scientific and philosophical circles of the painting's commissioners.", "title": "Biography" }, { "paragraph_id": 42, "text": "Despite his success in Naples, after only a few months in the city Caravaggio left for Malta, the headquarters of the Knights of Malta. Fabrizio Sforza Colonna, Costanza's son, was a Knight of Malta and general of the Order's galleys. He appears to have facilitated Caravaggio's arrival on the island in 1607 (and his escape the next year). Caravaggio presumably hoped that the patronage of Alof de Wignacourt, Grand Master of the Knights of Saint John, could help him secure a pardon for Tomassoni's death. Wignacourt was so impressed at having the famous artist as official painter to the Order that he inducted him as a Knight, and the early biographer Bellori records that the artist was well pleased with his success.", "title": "Biography" }, { "paragraph_id": 43, "text": "Major works from his Malta period include the Beheading of Saint John the Baptist, his largest ever work, and the only painting to which he put his signature, Saint Jerome Writing (both housed in Saint John's Co-Cathedral, Valletta, Malta) and a Portrait of Alof de Wignacourt and his Page, as well as portraits of other leading Knights. According to Andrea Pomella, The Beheading of Saint John the Baptist is widely considered \"one of the most important works in Western painting.\" Completed in 1608, the painting had been commissioned by the Knights of Malta as an altarpiece and measuring 370 by 520 centimetres (150 in × 200 in) was the largest altarpiece Caravaggio painted. It still hangs in St. John's Co-Cathedral, for which it was commissioned and where Caravaggio himself was inducted and briefly served as a knight.", "title": "Biography" }, { "paragraph_id": 44, "text": "Yet, by late August 1608, he was arrested and imprisoned, likely the result of yet another brawl, this time with an aristocratic knight, during which the door of a house was battered down and the knight seriously wounded. Caravaggio was imprisoned by the Knights at Valletta, but he managed to escape. By December, he had been expelled from the Order \"as a foul and rotten member\", a formal phrase used in all such cases.", "title": "Biography" }, { "paragraph_id": 45, "text": "Caravaggio made his way to Sicily where he met his old friend Mario Minniti, who was now married and living in Syracuse. Together they set off on what amounted to a triumphal tour from Syracuse to Messina and, maybe, on to the island capital, Palermo. In Syracuse and Messina Caravaggio continued to win prestigious and well-paid commissions. Among other works from this period are Burial of St. Lucy, The Raising of Lazarus, and Adoration of the Shepherds. His style continued to evolve, showing now friezes of figures isolated against vast empty backgrounds. \"His great Sicilian altarpieces isolate their shadowy, pitifully poor figures in vast areas of darkness; they suggest the desperate fears and frailty of man, and at the same time convey, with a new yet desolate tenderness, the beauty of humility and of the meek, who shall inherit the earth.\" Contemporary reports depict a man whose behaviour was becoming increasingly bizarre, which included sleeping fully armed and in his clothes, ripping up a painting at a slight word of criticism, and mocking local painters.", "title": "Biography" }, { "paragraph_id": 46, "text": "Caravaggio displayed bizarre behaviour from very early in his career. Mancini describes him as \"extremely crazy\", a letter from Del Monte notes his strangeness, and Minniti's 1724 biographer says that Mario left Caravaggio because of his behaviour. The strangeness seems to have increased after Malta. Susinno's early-18th-century Le vite de' pittori Messinesi (\"Lives of the Painters of Messina\") provides several colourful anecdotes of Caravaggio's erratic behaviour in Sicily, and these are reproduced in modern full-length biographies such as Langdon and Robb. Bellori writes of Caravaggio's \"fear\" driving him from city to city across the island and finally, \"feeling that it was no longer safe to remain\", back to Naples. Baglione says Caravaggio was being \"chased by his enemy\", but like Bellori does not say who this enemy was.", "title": "Biography" }, { "paragraph_id": 47, "text": "After only nine months in Sicily, Caravaggio returned to Naples in the late summer of 1609. According to his earliest biographer, he was being pursued by enemies while in Sicily and felt it safest to place himself under the protection of the Colonnas until he could secure his pardon from the pope (now Paul V) and return to Rome. In Naples he painted The Denial of Saint Peter, a final John the Baptist (Borghese), and his last picture, The Martyrdom of Saint Ursula. His style continued to evolve—Saint Ursula is caught in a moment of highest action and drama, as the arrow fired by the king of the Huns strikes her in the breast, unlike earlier paintings that had all the immobility of the posed models. The brushwork was also much freer and more impressionistic.", "title": "Biography" }, { "paragraph_id": 48, "text": "In October 1609 he was involved in a violent clash, an attempt on his life, perhaps ambushed by men in the pay of the knight he had wounded in Malta or some other faction of the Order. His face was seriously disfigured and rumours circulated in Rome that he was dead. He painted a Salome with the Head of John the Baptist (Madrid), showing his own head on a platter, and sent it to Wignacourt as a plea for forgiveness. Perhaps at this time, he also painted a David with the Head of Goliath, showing the young David with a strangely sorrowful expression gazing at the severed head of the giant, which is again Caravaggio. This painting he may have sent to his patron, the unscrupulous art-loving Cardinal Scipione Borghese, nephew of the pope, who had the power to grant or withhold pardons. Caravaggio hoped Borghese could mediate a pardon in exchange for works by the artist.", "title": "Biography" }, { "paragraph_id": 49, "text": "News from Rome encouraged Caravaggio, and in the summer of 1610, he took a boat northwards to receive the pardon, which seemed imminent thanks to his powerful Roman friends. With him were three last paintings, the gifts for Cardinal Scipione. What happened next is the subject of much confusion and conjecture, shrouded in much mystery.", "title": "Biography" }, { "paragraph_id": 50, "text": "The bare facts seem to be that on 28 July, an anonymous avviso (private newsletter) from Rome to the ducal court of Urbino reported that Caravaggio was dead. Three days later, another avviso said that he had died of fever on his way from Naples to Rome. A poet friend of the artist later gave 18 July as the date of death, and a recent researcher claims to have discovered a death notice showing that the artist died on that day of a fever in Porto Ercole, near Grosseto in Tuscany.", "title": "Biography" }, { "paragraph_id": 51, "text": "Caravaggio had a fever at the time of his death, and what killed him was a matter of controversy and rumour at the time, and has been a matter of historical debate and study since. Contemporary rumors held that either the Tommasoni family or the Knights had him killed in revenge. Traditionally historians have long thought he died of syphilis. Some have said he had malaria, or possibly brucellosis from unpasteurised dairy. Some scholars have argued that Caravaggio was actually attacked and killed by the same \"enemies\" that had been pursuing him since he fled Malta, possibly Wignacourt and/or factions of the Knights.", "title": "Biography" }, { "paragraph_id": 52, "text": "Caravaggio's remains were buried in Porto Ercole's San Sebastiano cemetery, which closed in 1956, and then moved to St. Erasmus cemetery, where, in 2010, archaeologists conducted a year-long investigation of remains found in three crypts and after using DNA, carbon dating, and other methods, believe with a high degree of confidence that they have identified those of Caravaggio. Initial tests suggested Caravaggio might have died of lead poisoning—paints used at the time contained high amounts of lead salts, and Caravaggio is known to have indulged in violent behavior, as caused by lead poisoning. Later research concluded he died as the result of a wound sustained in a brawl in Naples, specifically from sepsis caused by Staphylococcus aureus.", "title": "Biography" }, { "paragraph_id": 53, "text": "Vatican documents released in 2002 support the theory that the wealthy Tommasoni family had him hunted down and killed as a vendetta for Caravaggio's murder of gangster Ranuccio Tommasoni, in a botched attempt at castration after a duel over the affections of model Fillide Melandroni.", "title": "Biography" }, { "paragraph_id": 54, "text": "Since the 1970s art scholars and historians have debated the inferences of homoeroticism in Caravaggio's works as a way to better understand the man. Caravaggio never married and had no known children, and Howard Hibbard observed the absence of erotic female figures in the artist's oeuvre: \"In his entire career he did not paint a single female nude\", and the cabinet-pieces from the Del Monte period are replete with \"full-lipped, languorous boys ... who seem to solicit the onlooker with their offers of fruit, wine, flowers—and themselves\" suggesting an erotic interest in the male form. The model of Amor vincit omnia, Cecco del Caravaggio, lived with the artist in Rome and stayed with him even after he was obliged to leave the city in 1606. The two may have been lovers.", "title": "Sexuality" }, { "paragraph_id": 55, "text": "A connection with a certain Lena is mentioned in a 1605 court deposition by Pasqualone, where she is described as \"Michelangelo's girl\". According to G. B. Passeri, this 'Lena' was Caravaggio's model for the Madonna di Loreto; and according to Catherine Puglisi, 'Lena' may have been the same person as the courtesan Maddalena di Paolo Antognetti, who named Caravaggio as an \"intimate friend\" by her own testimony in 1604. Caravaggio was also rumored to be madly in love with Fillide Melandroni, a well known Roman prostitute who modeled for him in several important paintings.", "title": "Sexuality" }, { "paragraph_id": 56, "text": "Caravaggio's sexuality also received early speculation due to claims about the artist by Honoré Gabriel Riqueti, comte de Mirabeau. Writing in 1783, Mirabeau contrasted the personal life of Caravaggio directly with the writings of St Paul in the Book of Romans, arguing that \"Romans\" excessively practice sodomy or homosexuality. The Holy Mother Catholic Church teachings on morality (and so on; short book title) contains the Latin phrase \"Et fœminæ eorum immutaverunt naturalem usum in eum usum qui est contra naturam.\" (\"and their women changed their natural habit to that which is against nature\"). The phrase, according to Mirabeau, entered Caravaggio's thoughts, and he claimed that such an \"abomination\" could be witnessed through a particular painting housed at the Museum of the Grand Duke of Tuscany—featuring a rosary of a blasphemous nature, in which a circle of thirty men (turpiter ligati) are intertwined in embrace and presented in unbridled composition. Mirabeau notes the affectionate nature of Caravaggio's depiction reflects the voluptuous glow of the artist's sexuality. By the late nineteenth century, Sir Richard Francis Burton identified the painting as Caravaggio's painting of St. Rosario. Burton also identifies both St. Rosario and this painting with the practices of Tiberius mentioned by Seneca the Younger. The survival status and location of Caravaggio's painting is unknown. No such painting appears in his or his school's catalogues.", "title": "Sexuality" }, { "paragraph_id": 57, "text": "Aside from the paintings, evidence also comes from the libel trial brought against Caravaggio by Giovanni Baglione in 1603. Baglione accused Caravaggio and his friends of writing and distributing scurrilous doggerel attacking him; the pamphlets, according to Baglione's friend and witness Mao Salini, had been distributed by a certain Giovanni Battista, a bardassa, or boy prostitute, shared by Caravaggio and his friend Onorio Longhi. Caravaggio denied knowing any young boy of that name, and the allegation was not followed up.", "title": "Sexuality" }, { "paragraph_id": 58, "text": "Baglione's painting of \"Divine Love\" has also been seen as a visual accusation of sodomy against Caravaggio. Such accusations were damaging and dangerous as sodomy was a capital crime at the time. Even though the authorities were unlikely to investigate such a well-connected person as Caravaggio, \"Once an artist had been smeared as a pederast, his work was smeared too.\" Francesco Susino in his later biography additionally relates the story of how the artist was chased by a schoolmaster in Sicily for spending too long gazing at the boys in his care. Susino presents it as a misunderstanding, but some authors have speculated that Caravaggio may indeed have been seeking sex with the boys, using the incident to explain some of his paintings which they believe to be homoerotic.", "title": "Sexuality" }, { "paragraph_id": 59, "text": "The art historian Andrew Graham-Dixon has summarised the debate:", "title": "Sexuality" }, { "paragraph_id": 60, "text": "A lot has been made of Caravaggio's presumed homosexuality, which has in more than one previous account of his life been presented as the single key that explains everything, both the power of his art and the misfortunes of his life. There is no absolute proof of it, only strong circumstantial evidence and much rumour. The balance of probability suggests that Caravaggio did indeed have sexual relations with men. But he certainly had female lovers. Throughout the years that he spent in Rome, he kept close company with a number of prostitutes. The truth is that Caravaggio was as uneasy in his relationships as he was in most other aspects of life. He likely slept with men. He did sleep with women. He settled with no one... [but] the idea that he was an early martyr to the drives of an unconventional sexuality is an anachronistic fiction.", "title": "Sexuality" }, { "paragraph_id": 61, "text": "Washington Post art critic Philip Kennicott has taken issue with what he regarded as Graham-Dixon's minimizing of Caravaggio's homosexuality:", "title": "Sexuality" }, { "paragraph_id": 62, "text": "There was a fussiness to the tone whenever a scholar or curator was forced to grapple with transgressive sexuality, and you can still find it even in relatively recent histories, including Andrew Graham-Dixon's 2010 biography of Caravaggio, which acknowledges only that \"he likely slept with men\". The author notes the artist's fluid sexual desires but gives some of Caravaggio's most explicitly homoerotic paintings tortured readings to keep them safely in the category of mere \"ambiguity\".", "title": "Sexuality" }, { "paragraph_id": 63, "text": "Caravaggio \"put the oscuro (shadows) into chiaroscuro\". Chiaroscuro was practised long before he came on the scene, but it was Caravaggio who made the technique a dominant stylistic element, darkening the shadows and transfixing the subject in a blinding shaft of light. With this came the acute observation of physical and psychological reality that formed the ground both for his immense popularity and for his frequent problems with his religious commissions.", "title": "As an artist" }, { "paragraph_id": 64, "text": "He worked at great speed, from live models, scoring basic guides directly onto the canvas with the end of the brush handle; very few of Caravaggio's drawings appear to have survived, and it is likely that he preferred to work directly on the canvas. The approach was anathema to the skilled artists of his day, who decried his refusal to work from drawings and to idealise his figures. Yet the models were basic to his realism. Some have been identified, including Mario Minniti and Francesco Boneri, both fellow artists, Minniti appearing as various figures in the early secular works, the young Boneri as a succession of angels, Baptists and Davids in the later canvasses. His female models include Fillide Melandroni, Anna Bianchini, and Maddalena Antognetti (the \"Lena\" mentioned in court documents of the \"artichoke\" case as Caravaggio's concubine), all well-known prostitutes, who appear as female religious figures including the Virgin and various saints. Caravaggio himself appears in several paintings, his final self-portrait being as the witness on the far right to the Martyrdom of Saint Ursula.", "title": "As an artist" }, { "paragraph_id": 65, "text": "Caravaggio had a noteworthy ability to express in one scene of unsurpassed vividness the passing of a crucial moment. The Supper at Emmaus depicts the recognition of Christ by his disciples: a moment before he is a fellow traveller, mourning the passing of the Messiah, as he never ceases to be to the innkeeper's eyes; the second after, he is the Saviour. In The Calling of St Matthew, the hand of the Saint points to himself as if he were saying, \"who, me?\", while his eyes, fixed upon the figure of Christ, have already said, \"Yes, I will follow you\". With The Resurrection of Lazarus, he goes a step further, giving a glimpse of the actual physical process of resurrection. The body of Lazarus is still in the throes of rigour mortis, but his hand, facing and recognising that of Christ, is alive. Other major Baroque artists would travel the same path, for example Bernini, fascinated with themes from Ovid's Metamorphoses.", "title": "As an artist" }, { "paragraph_id": 66, "text": "The installation of the St. Matthew paintings in the Contarelli Chapel had an immediate impact among the younger artists in Rome, and Caravaggism became the cutting edge for every ambitious young painter. The first Caravaggisti included Orazio Gentileschi and Giovanni Baglione. Baglione's Caravaggio phase was short-lived; Caravaggio later accused him of plagiarism and the two were involved in a long feud. Baglione went on to write the first biography of Caravaggio. In the next generation of Caravaggisti, there were Carlo Saraceni, Bartolomeo Manfredi and Orazio Borgianni. Gentileschi, despite being considerably older, was the only one of these artists to live much beyond 1620 and ended up as a court painter to Charles I of England. His daughter Artemisia Gentileschi was also stylistically close to Caravaggio and one of the most gifted of the movement. Yet, in Rome and in Italy, it was not Caravaggio, but the influence of his rival Annibale Carracci, blending elements from the High Renaissance and Lombard realism, which ultimately triumphed.", "title": "As an artist" }, { "paragraph_id": 67, "text": "Caravaggio's brief stay in Naples produced a notable school of Neapolitan Caravaggisti, including Battistello Caracciolo and Carlo Sellitto. The Caravaggisti movement there ended with a terrible outbreak of plague in 1656, but the Spanish connection—Naples was a possession of Spain—was instrumental in forming the important Spanish branch of his influence.", "title": "As an artist" }, { "paragraph_id": 68, "text": "Rubens was likely one of the first Flemish artists to be influenced by Caravaggio whose work he got to know during his stay in Rome in 1601. He later painted a copy (or rather an interpretation) of Caravaggio's Entombment of Christ and recommended his patron, the Duke of Mantua, to purchase The Death of the Virgin (Louvre). Although some of this interest in Caravaggio is reflected in his drawings during his Italian residence, it was only after his return to Antwerp in 1608 that Rubens' works show openly Caravaggesque traits such as in the Cain slaying Abel (1608–1609) (Courtauld Institute of Art) and the Old Woman and Boy with Candles (1618–1619) (Mauritshuis). However, the influence of Caravaggio on Rubens' work would be less important than that of Raphael, Correggio, Barocci and the Venetians. Flemish artists, who were influenced by Rubens, such as Jacob Jordaens, Pieter van Mol, Gaspar de Crayer and Willem Jacob Herreyns, also used certain stark realism and strong contrasts of light and shadow, common to the Caravaggesque style.", "title": "As an artist" }, { "paragraph_id": 69, "text": "A number of Catholic artists from Utrecht, including Hendrick ter Brugghen, Gerrit van Honthorst and Dirck van Baburen travelled in the first decades of the 17th century to Rome. Here they became profoundly influenced by the work of Caravaggio and his followers. On their return to Utrecht, their Caravaggesque works inspired a short-lived but influential flowering of artworks inspired indirectly in style and subject matter by the works of Caravaggio and the Italian followers of Caravaggio. This style of painting was later referred to as Utrecht Caravaggism. In the following generation of Dutch artists the effects of Caravaggio, although attenuated, are to be seen in the work of Vermeer and Rembrandt, neither of whom visited Italy.", "title": "As an artist" }, { "paragraph_id": 70, "text": "Caravaggio's innovations inspired the Baroque, but the Baroque took the drama of his chiaroscuro without the psychological realism. While he directly influenced the style of the artists mentioned above, and, at a distance, the Frenchmen Georges de La Tour and Simon Vouet, and the Spaniard Giuseppe Ribera, within a few decades his works were being ascribed to less scandalous artists, or simply overlooked. The Baroque, to which he contributed so much, had evolved, and fashions had changed, but perhaps more pertinently, Caravaggio never established a workshop as the Carracci did and thus had no school to spread his techniques. Nor did he ever set out his underlying philosophical approach to art, the psychological realism that may only be deduced from his surviving work.", "title": "As an artist" }, { "paragraph_id": 71, "text": "Thus his reputation was doubly vulnerable to the unsympathetic critiques of his earliest biographers, Giovanni Baglione, a rival painter with a vendetta, and the influential 17th-century critic Gian Pietro Bellori, who had not known him but was under the influence of the earlier Giovanni Battista Agucchi and Bellori's friend Poussin, in preferring the \"classical-idealistic\" tradition of the Bolognese school led by the Carracci. Baglione, his first biographer, played a considerable part in creating the legend of Caravaggio's unstable and violent character, as well as his inability to draw.", "title": "As an artist" }, { "paragraph_id": 72, "text": "In the 1920s, art critic Roberto Longhi brought Caravaggio's name once more to the foreground and placed him in the European tradition: \"Ribera, Vermeer, La Tour and Rembrandt could never have existed without him. And the art of Delacroix, Courbet and Manet would have been utterly different\". The influential Bernard Berenson agreed: \"With the exception of Michelangelo, no other Italian painter exercised so great an influence.\"", "title": "As an artist" }, { "paragraph_id": 73, "text": "Caravaggio's epitaph was composed by his friend Marzio Milesi. It reads:", "title": "As an artist" }, { "paragraph_id": 74, "text": "\"Michelangelo Merisi, son of Fermo di Caravaggio – in painting not equal to a painter, but to Nature itself – died in Port' Ercole – betaking himself hither from Naples – returning to Rome – 15th calend of August – In the year of our Lord 1610 – He lived thirty-six years nine months and twenty days – Marzio Milesi, Jurisconsult – Dedicated this to a friend of extraordinary genius.\"", "title": "As an artist" }, { "paragraph_id": 75, "text": "He was commemorated on the front of the Banca d'Italia 100,000-lire banknote in the 1980s and '90s (before Italy switched to the euro) with the back showing his Basket of Fruit.", "title": "As an artist" }, { "paragraph_id": 76, "text": "There is disagreement as to the size of Caravaggio's oeuvre, with counts as low as 40 and as high as 80. In his biography, Caravaggio scholar Alfred Moir writes, \"The forty-eight color plates in this book include almost all of the surviving works accepted by every Caravaggio expert as autograph, and even the least demanding would add fewer than a dozen more\". One, The Calling of Saints Peter and Andrew, was in 2006 authenticated and restored; it had been in storage in Hampton Court, mislabeled as a copy. Richard Francis Burton writes of a \"picture of St. Rosario (in the museum of the Grand Duke of Tuscany), showing a circle of thirty men turpiter ligati\" (\"lewdly banded\"), which is not known to have survived. The rejected version of Saint Matthew and the Angel, intended for the Contarelli Chapel in San Luigi dei Francesi in Rome, was destroyed during the bombing of Dresden, though black and white photographs of the work exist. In June 2011 it was announced that a previously unknown Caravaggio painting of Saint Augustine dating to about 1600 had been discovered in a private collection in Britain. Called a \"significant discovery\", the painting had never been published and is thought to have been commissioned by Vincenzo Giustiniani, a patron of the painter in Rome.", "title": "Oeuvre" }, { "paragraph_id": 77, "text": "A painting depicting Judith Beheading Holofernes was allegedly discovered in an attic in Toulouse in 2014. In April 2016 the expert and art dealer to whom the work was shown announced that this was a long-lost painting by the hand of Caravaggio himself. That lost Caravaggio painting was only known up to that date by a presumed copy of it by the Flemish painter Louis Finson, who had shared a studio with Caravaggio in Naples. The French government imposed an export ban on the newly discovered painting while tests were carried out to establish whether it was an authentic painting by Caravaggio. In February 2019 it was announced that the painting would be sold at auction after the Louvre had turned down the opportunity to purchase it for €100 million. After an auction was considered, the painting was finally sold in a private sale to the American billionaire hedge fund manager J. Tomilson Hill. The art historical world is not united over the attribution of the work, with the art dealer who sold the work promoting its authenticity with the support of art historians who were given privileged access to the work, while other art historians remain unconvinced mainly based on stylistic and quality considerations. Some art historians believe it may be a work by Louis Finson himself.", "title": "Oeuvre" }, { "paragraph_id": 78, "text": "In April 2021 a minor work believed to be from the circle of a Spanish follower of Caravaggio, Jusepe de Ribera, was withdrawn from sale at the Madrid auction house Ansorena when the Museo del Prado alerted the Ministry of Culture, which placed a preemptive export ban on the painting. The 111 centimetres (44 in) by 86 centimetres (34 in) painting has been in the Pérez de Castro family since 1823, when it was exchanged for another work from the Real Academia of San Fernando. It had been listed as \"Ecce-Hommo con dos saiones de Carabaggio\" before the attribution was later lost or changed to the circle of Ribera. Stylistic evidence, as well as the similarity of the models to those in other Caravaggio works, has convinced some experts that the painting is the original Caravaggio 'Ecce Homo' for the 1605 Massimo Massimi commission. The attribution to Caravaggio is disputed by other experts. The painting is now undergoing restoration by Colnaghis, who will also be handling the future sale of the work.", "title": "Oeuvre" }, { "paragraph_id": 79, "text": "In October 1969, two thieves entered the Oratory of Saint Lawrence in Palermo, Sicily, and stole Caravaggio's Nativity with St. Francis and St. Lawrence from its frame. Experts estimated its value at $20 million.", "title": "Theft" }, { "paragraph_id": 80, "text": "Following the theft, Italian police set up an art theft task force with the specific aim of re-acquiring lost and stolen artworks. Since the creation of this task force, many leads have been followed regarding the Nativity. Former Italian mafia members have stated that Nativity with St. Francis and St. Lawrence was stolen by the Sicilian Mafia and displayed at important mafia gatherings. Former mafia members have said that the Nativity was damaged and has since been destroyed.", "title": "Theft" }, { "paragraph_id": 81, "text": "The whereabouts of the painting are still unknown. A reproduction currently hangs in its place in the Oratory of San Lorenzo.", "title": "Theft" }, { "paragraph_id": 82, "text": "Caravaggio's work has been widely influential in late-20th-century American gay culture, with frequent references to male sexual imagery in paintings such as The Musicians and Amor Victorious. British filmmaker Derek Jarman made a critically applauded biopic entitled Caravaggio in 1986. Several poems written by Thom Gunn were responses to specific Caravaggio paintings.", "title": "Cultural legacy" }, { "paragraph_id": 83, "text": "In 2013, a touring Caravaggio exhibition called \"Burst of Light: Caravaggio and His Legacy\" opened in the Wadsworth Atheneum Museum of Art in Hartford, Connecticut. The show included five paintings by the master artist that included Saint John the Baptist in the Wilderness (1604–1605) and Martha and Mary Magdalene (1589). The whole travelled to France and also to Los Angeles, California. Other Baroque artists like Georges de La Tour, Orazio Gentileschi, and the Spanish trio of Diego Velazquez, Francisco de Zurbaran, and Carlo Saraceni were also included in the exhibitions.", "title": "Cultural legacy" }, { "paragraph_id": 84, "text": "In 2022 a new biopic about Caravaggio was released: L'Ombra di Caravaggio, an Italian-French movie directed by Michele Placido.", "title": "Cultural legacy" }, { "paragraph_id": 85, "text": "The main primary sources for Caravaggio's life are:", "title": "References" }, { "paragraph_id": 86, "text": "All have been reprinted in Howard Hibbard's Caravaggio and in the appendices to Catherine Puglisi's Caravaggio.", "title": "References" }, { "paragraph_id": 87, "text": "", "title": "External links" } ]	Michelangelo Merisi da Caravaggio, known as simply Caravaggio, was an Italian painter active in Rome for most of his artistic life. During the final four years of his life he moved between Naples, Malta, and Sicily until his death. His paintings have been characterized by art critics as combining a realistic observation of the human state, both physical and emotional, with a dramatic use of lighting, which had a formative influence on Baroque painting. Caravaggio employed close physical observation with a dramatic use of chiaroscuro that came to be known as tenebrism. He made the technique a dominant stylistic element, transfixing subjects in bright shafts of light and darkening shadows. Caravaggio vividly expressed crucial moments and scenes, often featuring violent struggles, torture, and death. He worked rapidly with live models, preferring to forgo drawings and work directly onto the canvas. His inspiring effect on the new Baroque style that emerged from Mannerism was profound. His influence can be seen directly or indirectly in the work of Peter Paul Rubens, Jusepe de Ribera, Gian Lorenzo Bernini, and Rembrandt. Artists heavily under his influence were called the "Caravaggisti", as well as tenebrists or tenebrosi ("shadowists"). Caravaggio trained as a painter in Milan before moving to Rome when he was in his twenties. He developed a considerable name as an artist and as a violent, touchy and provocative man. He killed Ranuccio Tommasoni in a brawl, which led to a death sentence for murder and forced him to flee to Naples. There he again established himself as one of the most prominent Italian painters of his generation. He travelled to Malta and on to Sicily in 1607 and pursued a papal pardon for his sentence. In 1609 he returned to Naples, where he was involved in a violent clash; his face was disfigured, and rumours of his death circulated. Questions about his mental state arose from his erratic and bizarre behavior. He died in 1610 under uncertain circumstances while on his way from Naples to Rome. Reports stated that he died of a fever, but suggestions have been made that he was murdered or that he died of lead poisoning. Caravaggio's innovations inspired Baroque painting, but the latter incorporated the drama of his chiaroscuro without the psychological realism. The style evolved and fashions changed, and Caravaggio fell out of favour. In the 20th century, interest in his work revived, and his importance to the development of Western art was reevaluated. The 20th-century art historian André Berne-Joffroy stated: "What begins in the work of Caravaggio is, quite simply, modern painting."	2001-11-06T04:00:11Z	2023-12-22T03:47:22Z	[ "Template:Dubious", "Template:IPA-it", "Template:Circa", "Template:Convert", "Template:Cite journal", "Template:Cbignore", "Template:ISBN", "Template:Authority control", "Template:Use dmy dates", "Template:Clear", "Template:Caravaggisti", "Template:Short description", "Template:See also", "Template:Cite magazine", "Template:Refend", "Template:Commons", "Template:Caravaggio", "Template:Infobox artist", "Template:Cite web", "Template:Webarchive", "Template:IPAc-en", "Template:Cite encyclopedia", "Template:Expand language", "Template:Ill", "Template:Blockquote", "Template:Reflist", "Template:Cite book", "Template:Other uses", "Template:Cite news", "Template:Refbegin", "Template:Sfn" ]	https://en.wikipedia.org/wiki/Caravaggio
7,019	Jean Siméon Chardin	Jean Siméon Chardin (French: [ʒɑ̃ simeɔ̃ ʃaʁdɛ̃]; November 2, 1699 – December 6, 1779) was an 18th-century French painter. He is considered a master of still life, and is also noted for his genre paintings which depict kitchen maids, children, and domestic activities. Carefully balanced composition, soft diffusion of light, and granular impasto characterize his work. Chardin was born in Paris, the son of a cabinetmaker, and rarely left the city. He lived on the Left Bank near Saint-Sulpice until 1757, when Louis XV granted him a studio and living quarters in the Louvre. Chardin entered into a marriage contract with Marguerite Saintard in 1723, whom he did not marry until 1731. He served apprenticeships with the history painters Pierre-Jacques Cazes and Noël-Nicolas Coypel, and in 1724 became a master in the Académie de Saint-Luc. According to one nineteenth-century writer, at a time when it was hard for unknown painters to come to the attention of the Royal Academy, he first found notice by displaying a painting at the "small Corpus Christi" (held eight days after the regular one) on the Place Dauphine (by the Pont Neuf). Van Loo, passing by in 1720, bought it and later assisted the young painter. Upon presentation of The Ray and The Buffet in 1728, he was admitted to the Académie Royale de Peinture et de Sculpture. The following year he ceded his position in the Académie de Saint-Luc. He made a modest living by "produc[ing] paintings in the various genres at whatever price his customers chose to pay him", and by such work as the restoration of the frescoes at the Galerie François I at Fontainebleau in 1731. In November 1731 his son Jean-Pierre was baptized, and a daughter, Marguerite-Agnès, was baptized in 1733. In 1735 his wife Marguerite died, and within two years Marguerite-Agnès had died as well. Beginning in 1737 Chardin exhibited regularly at the Salon. He would prove to be a "dedicated academician", regularly attending meetings for fifty years, and functioning successively as counsellor, treasurer, and secretary, overseeing in 1761 the installation of Salon exhibitions. Chardin's work gained popularity through reproductive engravings of his genre paintings (made by artists such as François-Bernard Lépicié and P.-L. Sugurue), which brought Chardin income in the form of "what would now be called royalties". In 1744 he entered his second marriage, this time to Françoise-Marguerite Pouget. The union brought a substantial improvement in Chardin's financial circumstances. In 1745 a daughter, Angélique-Françoise, was born, but she died in 1746. In 1752 Chardin was granted a pension of 500 livres by Louis XV. In 1756 Chardin returned to the subject of the still life. At the Salon of 1759 he exhibited nine paintings; it was the first Salon to be commented upon by Denis Diderot, who would prove to be a great admirer and public champion of Chardin's work. Beginning in 1761, his responsibilities on behalf of the Salon, simultaneously arranging the exhibitions and acting as treasurer, resulted in a diminution of productivity in painting, and the showing of 'replicas' of previous works. In 1763 his services to the Académie were acknowledged with an extra 200 livres in pension. In 1765 he was unanimously elected associate member of the Académie des Sciences, Belles-Lettres et Arts of Rouen, but there is no evidence that he left Paris to accept the honor. By 1770 Chardin was the 'Premier peintre du roi', and his pension of 1,400 livres was the highest in the academy. In the 1770s his eyesight weakened and he took to painting in pastels, a medium in which he executed portraits of his wife and himself (see Self-portrait at top right). His works in pastels are now highly valued. In 1772 Chardin's son, also a painter, drowned in Venice, a probable suicide. The artist's last known oil painting was dated 1776; his final Salon participation was in 1779, and featured several pastel studies. Gravely ill by November of that year, he died in Paris on December 6, at the age of 80. Chardin worked very slowly and painted only slightly more than 200 pictures (about four a year) in total. Chardin's work had little in common with the Rococo painting that dominated French art in the 18th century. At a time when history painting was considered the supreme classification for public art, Chardin's subjects of choice were viewed as minor categories. He favored simple yet beautifully textured still lifes, and sensitively handled domestic interiors and genre paintings. Simple, even stark, paintings of common household items (Still Life with a Smoker's Box) and an uncanny ability to portray children's innocence in an unsentimental manner (Boy with a Top [right]) nevertheless found an appreciative audience in his time, and account for his timeless appeal. Largely self-taught, Chardin was greatly influenced by the realism and subject matter of the 17th-century Low Country masters. Despite his unconventional portrayal of the ascendant bourgeoisie, early support came from patrons in the French aristocracy, including Louis XV. Though his popularity rested initially on paintings of animals and fruit, by the 1730s he introduced kitchen utensils into his work (The Copper Cistern, c. 1735, Louvre). Soon figures populated his scenes as well, supposedly in response to a portrait painter who challenged him to take up the genre. Woman Sealing a Letter (ca. 1733), which may have been his first attempt, was followed by half-length compositions of children saying grace, as in Le Bénédicité, and kitchen maids in moments of reflection. These humble scenes deal with simple, everyday activities, yet they also have functioned as a source of documentary information about a level of French society not hitherto considered a worthy subject for painting. The pictures are noteworthy for their formal structure and pictorial harmony. Chardin said about painting, "Who said one paints with colors? One employs colors, but one paints with feeling." A child playing was a favourite subject of Chardin. He depicted an adolescent building a house of cards on at least four occasions. The version at Waddesdon Manor is the most elaborate. Scenes such as these derived from 17th-century Netherlandish vanitas works, which bore messages about the transitory nature of human life and the worthlessness of material ambitions, but Chardin's also display a delight in the ephemeral phases of childhood for their own sake. Chardin frequently painted replicas of his compositions—especially his genre paintings, nearly all of which exist in multiple versions which in many cases are virtually indistinguishable. Beginning with The Governess (1739, in the National Gallery of Canada, Ottawa), Chardin shifted his attention from working-class subjects to slightly more spacious scenes of bourgeois life. Chardin's extant paintings, which number about 200, are in many major museums, including the Louvre. Chardin's influence on the art of the modern era was wide-ranging and has been well-documented. Édouard Manet's half-length Boy Blowing Bubbles and the still lifes of Paul Cézanne are equally indebted to their predecessor. He was one of Henri Matisse's most admired painters; as an art student Matisse made copies of four Chardin paintings in the Louvre. Chaïm Soutine's still lifes looked to Chardin for inspiration, as did the paintings of Georges Braque, and later, Giorgio Morandi. In 1999 Lucian Freud painted and etched several copies after The Young Schoolmistress (National Gallery, London). Marcel Proust, in the chapter "How to open your eyes?" from In Search of Lost Time (À la recherche du temps perdu), describes a melancholic young man sitting at his simple breakfast table. The only comfort he finds is in the imaginary ideas of beauty depicted in the great masterpieces of the Louvre, materializing fancy palaces, rich princes, and the like. The author tells the young man to follow him to another section of the Louvre where the pictures of Chardin are. There he would see the beauty in still life at home and in everyday activities like peeling turnips. Media related to Jean Siméon Chardin at Wikimedia Commons	[ { "paragraph_id": 0, "text": "Jean Siméon Chardin (French: [ʒɑ̃ simeɔ̃ ʃaʁdɛ̃]; November 2, 1699 – December 6, 1779) was an 18th-century French painter. He is considered a master of still life, and is also noted for his genre paintings which depict kitchen maids, children, and domestic activities. Carefully balanced composition, soft diffusion of light, and granular impasto characterize his work.", "title": "" }, { "paragraph_id": 1, "text": "Chardin was born in Paris, the son of a cabinetmaker, and rarely left the city. He lived on the Left Bank near Saint-Sulpice until 1757, when Louis XV granted him a studio and living quarters in the Louvre.", "title": "Life" }, { "paragraph_id": 2, "text": "Chardin entered into a marriage contract with Marguerite Saintard in 1723, whom he did not marry until 1731. He served apprenticeships with the history painters Pierre-Jacques Cazes and Noël-Nicolas Coypel, and in 1724 became a master in the Académie de Saint-Luc.", "title": "Life" }, { "paragraph_id": 3, "text": "According to one nineteenth-century writer, at a time when it was hard for unknown painters to come to the attention of the Royal Academy, he first found notice by displaying a painting at the \"small Corpus Christi\" (held eight days after the regular one) on the Place Dauphine (by the Pont Neuf). Van Loo, passing by in 1720, bought it and later assisted the young painter.", "title": "Life" }, { "paragraph_id": 4, "text": "Upon presentation of The Ray and The Buffet in 1728, he was admitted to the Académie Royale de Peinture et de Sculpture. The following year he ceded his position in the Académie de Saint-Luc. He made a modest living by \"produc[ing] paintings in the various genres at whatever price his customers chose to pay him\", and by such work as the restoration of the frescoes at the Galerie François I at Fontainebleau in 1731.", "title": "Life" }, { "paragraph_id": 5, "text": "In November 1731 his son Jean-Pierre was baptized, and a daughter, Marguerite-Agnès, was baptized in 1733. In 1735 his wife Marguerite died, and within two years Marguerite-Agnès had died as well.", "title": "Life" }, { "paragraph_id": 6, "text": "Beginning in 1737 Chardin exhibited regularly at the Salon. He would prove to be a \"dedicated academician\", regularly attending meetings for fifty years, and functioning successively as counsellor, treasurer, and secretary, overseeing in 1761 the installation of Salon exhibitions.", "title": "Life" }, { "paragraph_id": 7, "text": "Chardin's work gained popularity through reproductive engravings of his genre paintings (made by artists such as François-Bernard Lépicié and P.-L. Sugurue), which brought Chardin income in the form of \"what would now be called royalties\". In 1744 he entered his second marriage, this time to Françoise-Marguerite Pouget. The union brought a substantial improvement in Chardin's financial circumstances. In 1745 a daughter, Angélique-Françoise, was born, but she died in 1746.", "title": "Life" }, { "paragraph_id": 8, "text": "In 1752 Chardin was granted a pension of 500 livres by Louis XV. In 1756 Chardin returned to the subject of the still life. At the Salon of 1759 he exhibited nine paintings; it was the first Salon to be commented upon by Denis Diderot, who would prove to be a great admirer and public champion of Chardin's work. Beginning in 1761, his responsibilities on behalf of the Salon, simultaneously arranging the exhibitions and acting as treasurer, resulted in a diminution of productivity in painting, and the showing of 'replicas' of previous works. In 1763 his services to the Académie were acknowledged with an extra 200 livres in pension. In 1765 he was unanimously elected associate member of the Académie des Sciences, Belles-Lettres et Arts of Rouen, but there is no evidence that he left Paris to accept the honor. By 1770 Chardin was the 'Premier peintre du roi', and his pension of 1,400 livres was the highest in the academy. In the 1770s his eyesight weakened and he took to painting in pastels, a medium in which he executed portraits of his wife and himself (see Self-portrait at top right). His works in pastels are now highly valued.", "title": "Life" }, { "paragraph_id": 9, "text": "In 1772 Chardin's son, also a painter, drowned in Venice, a probable suicide. The artist's last known oil painting was dated 1776; his final Salon participation was in 1779, and featured several pastel studies. Gravely ill by November of that year, he died in Paris on December 6, at the age of 80.", "title": "Life" }, { "paragraph_id": 10, "text": "Chardin worked very slowly and painted only slightly more than 200 pictures (about four a year) in total.", "title": "Work" }, { "paragraph_id": 11, "text": "Chardin's work had little in common with the Rococo painting that dominated French art in the 18th century. At a time when history painting was considered the supreme classification for public art, Chardin's subjects of choice were viewed as minor categories. He favored simple yet beautifully textured still lifes, and sensitively handled domestic interiors and genre paintings. Simple, even stark, paintings of common household items (Still Life with a Smoker's Box) and an uncanny ability to portray children's innocence in an unsentimental manner (Boy with a Top [right]) nevertheless found an appreciative audience in his time, and account for his timeless appeal.", "title": "Work" }, { "paragraph_id": 12, "text": "Largely self-taught, Chardin was greatly influenced by the realism and subject matter of the 17th-century Low Country masters. Despite his unconventional portrayal of the ascendant bourgeoisie, early support came from patrons in the French aristocracy, including Louis XV. Though his popularity rested initially on paintings of animals and fruit, by the 1730s he introduced kitchen utensils into his work (The Copper Cistern, c. 1735, Louvre). Soon figures populated his scenes as well, supposedly in response to a portrait painter who challenged him to take up the genre. Woman Sealing a Letter (ca. 1733), which may have been his first attempt, was followed by half-length compositions of children saying grace, as in Le Bénédicité, and kitchen maids in moments of reflection. These humble scenes deal with simple, everyday activities, yet they also have functioned as a source of documentary information about a level of French society not hitherto considered a worthy subject for painting. The pictures are noteworthy for their formal structure and pictorial harmony. Chardin said about painting, \"Who said one paints with colors? One employs colors, but one paints with feeling.\"", "title": "Work" }, { "paragraph_id": 13, "text": "A child playing was a favourite subject of Chardin. He depicted an adolescent building a house of cards on at least four occasions. The version at Waddesdon Manor is the most elaborate. Scenes such as these derived from 17th-century Netherlandish vanitas works, which bore messages about the transitory nature of human life and the worthlessness of material ambitions, but Chardin's also display a delight in the ephemeral phases of childhood for their own sake.", "title": "Work" }, { "paragraph_id": 14, "text": "Chardin frequently painted replicas of his compositions—especially his genre paintings, nearly all of which exist in multiple versions which in many cases are virtually indistinguishable. Beginning with The Governess (1739, in the National Gallery of Canada, Ottawa), Chardin shifted his attention from working-class subjects to slightly more spacious scenes of bourgeois life. Chardin's extant paintings, which number about 200, are in many major museums, including the Louvre.", "title": "Work" }, { "paragraph_id": 15, "text": "Chardin's influence on the art of the modern era was wide-ranging and has been well-documented. Édouard Manet's half-length Boy Blowing Bubbles and the still lifes of Paul Cézanne are equally indebted to their predecessor. He was one of Henri Matisse's most admired painters; as an art student Matisse made copies of four Chardin paintings in the Louvre. Chaïm Soutine's still lifes looked to Chardin for inspiration, as did the paintings of Georges Braque, and later, Giorgio Morandi. In 1999 Lucian Freud painted and etched several copies after The Young Schoolmistress (National Gallery, London).", "title": "Influence" }, { "paragraph_id": 16, "text": "Marcel Proust, in the chapter \"How to open your eyes?\" from In Search of Lost Time (À la recherche du temps perdu), describes a melancholic young man sitting at his simple breakfast table. The only comfort he finds is in the imaginary ideas of beauty depicted in the great masterpieces of the Louvre, materializing fancy palaces, rich princes, and the like. The author tells the young man to follow him to another section of the Louvre where the pictures of Chardin are. There he would see the beauty in still life at home and in everyday activities like peeling turnips.", "title": "Influence" }, { "paragraph_id": 17, "text": "Media related to Jean Siméon Chardin at Wikimedia Commons", "title": "External links" } ]	Jean Siméon Chardin was an 18th-century French painter. He is considered a master of still life, and is also noted for his genre paintings which depict kitchen maids, children, and domestic activities. Carefully balanced composition, soft diffusion of light, and granular impasto characterize his work.		2023-07-11T02:05:11Z	[ "Template:IPA-fr", "Template:Cbignore", "Template:Authority control (arts)", "Template:Britannica", "Template:Circa", "Template:Cite news", "Template:Webarchive", "Template:ISBN", "Template:Commons-inline", "Template:Expand French", "Template:Use dmy dates", "Template:Infobox artist", "Template:Clear", "Template:Reflist", "Template:Cite web", "Template:Cite book", "Template:Jean-Baptiste-Siméon Chardin", "Template:Short description" ]	https://en.wikipedia.org/wiki/Jean_Sim%C3%A9on_Chardin
7,021	Crookes radiometer	The Crookes radiometer (also known as a light mill) consists of an airtight glass bulb containing a partial vacuum, with a set of vanes which are mounted on a spindle inside. The vanes rotate when exposed to light, with faster rotation for more intense light, providing a quantitative measurement of electromagnetic radiation intensity. The reason for the rotation was a cause of much scientific debate in the ten years following the invention of the device, but in 1879 the currently accepted explanation for the rotation was published. Today the device is mainly used in physics education as a demonstration of a heat engine run by light energy. It was invented in 1873 by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weighings were disturbed when sunlight shone on the balance. Investigating this effect, he created the device named after him. It is still manufactured and sold as an educational aid or for curiosity. The radiometer is made from a glass bulb from which much of the air has been removed to form a partial vacuum. Inside the bulb, on a low-friction spindle, is a rotor with several (usually four) vertical lightweight vanes spaced equally around the axis. The vanes are polished or white on one side and black on the other. When exposed to sunlight, artificial light, or infrared radiation (even the heat of a hand nearby can be enough), the vanes turn with no apparent motive power, the dark sides retreating from the radiation source and the light sides advancing. Cooling the radiometer causes rotation in the opposite direction. The effect begins to be observed at partial vacuum pressures of several hundred pascals (or several torrs), reaches a peak at around 1 pascal (0.0075 torrs) and has disappeared by the time the vacuum reaches 1×10 pascals (7.5×10 torrs) (see explanations note 1). At these very high vacuums the effect of photon radiation pressure on the vanes can be observed in very sensitive apparatus (see Nichols radiometer), but this is insufficient to cause rotation. The prefix "radio-" in the title originates from the combining form of Latin radius, a ray: here it refers to electromagnetic radiation. A Crookes radiometer, consistent with the suffix "-meter" in its title, can provide a quantitative measurement of electromagnetic radiation intensity. This can be done, for example, by visual means (e.g., a spinning slotted disk, which functions as a simple stroboscope) without interfering with the measurement itself. Radiometers are now commonly sold worldwide as a novelty ornament; needing no batteries, but only light to get the vanes to turn. They come in various forms, such as the one pictured, and are often used in science museums to illustrate "radiation pressure" – a scientific principle that they do not in fact demonstrate. When a radiant energy source is directed at a Crookes radiometer, the radiometer becomes a heat engine. The operation of a heat engine is based on a difference in temperature that is converted to a mechanical output. In this case, the black side of the vane becomes hotter than the other side, as radiant energy from a light source warms the black side by absorption faster than the silver or white side. The internal air molecules are heated up when they touch the black side of the vane. The warmer side of the vane is subjected to a force which moves it forward. The internal temperature rises as the black vanes impart heat to the air molecules, but the molecules are cooled again when they touch the bulb's glass surface, which is at ambient temperature. This heat loss through the glass keeps the internal bulb temperature steady with the result that the two sides of the vanes develop a temperature difference. The white or silver side of the vanes are slightly warmer than the internal air temperature but cooler than the black side, as some heat conducts through the vane from the black side. The two sides of each vane must be thermally insulated to some degree so that the polished or white side does not immediately reach the temperature of the black side. If the vanes are made of metal, then the black or white paint can be the insulation. The glass stays much closer to ambient temperature than the temperature reached by the black side of the vanes. The external air helps conduct heat away from the glass. The air pressure inside the bulb needs to strike a balance between too low and too high. A strong vacuum inside the bulb does not permit motion, because there are not enough air molecules to cause the air currents that propel the vanes and transfer heat to the outside before both sides of each vane reach thermal equilibrium by heat conduction through the vane material. High inside pressure inhibits motion because the temperature differences are not enough to push the vanes through the higher concentration of air: there is too much air resistance for "eddy currents" to occur, and any slight air movement caused by the temperature difference is damped by the higher pressure before the currents can "wrap around" to the other side. When the radiometer is heated in the absence of a light source, it turns in the forward direction (i.e. black sides trailing). If a person's hands are placed around the glass without touching it, the vanes will turn slowly or not at all, but if the glass is touched to warm it quickly, they will turn more noticeably. Directly heated glass gives off enough infrared radiation to turn the vanes, but glass blocks much of the far-infrared radiation from a source of warmth not in contact with it. However, near-infrared and visible light more easily penetrate the glass. If the glass is cooled quickly in the absence of a strong light source by putting ice on the glass or placing it in the freezer with the door almost closed, it turns backwards (i.e. the silver sides trail). This demonstrates radiation from the black sides of the vanes rather than absorption. The wheel turns backwards because the net exchange of heat between the black sides and the environment initially cools the black sides faster than the white sides. Upon reaching equilibrium, typically after a minute or two, reverse rotation ceases. This contrasts with sunlight, with which forward rotation can be maintained all day. Over the years, there have been many attempts to explain how a Crookes radiometer works: Crookes incorrectly suggested that the force was due to the pressure of light. This theory was originally supported by James Clerk Maxwell, who had predicted this force. This explanation is still often seen in leaflets packaged with the device. The first experiment to test this theory was done by Arthur Schuster in 1876, who observed that there was a force on the glass bulb of the Crookes radiometer that was in the opposite direction to the rotation of the vanes. This showed that the force turning the vanes was generated inside the radiometer. If light pressure were the cause of the rotation, then the better the vacuum in the bulb, the less air resistance to movement, and the faster the vanes should spin. In 1901, with a better vacuum pump, Pyotr Lebedev showed that in fact, the radiometer only works when there is low-pressure gas in the bulb, and the vanes stay motionless in a hard vacuum. Finally, if light pressure were the motive force, the radiometer would spin in the opposite direction, as the photons on the shiny side being reflected would deposit more momentum than on the black side, where the photons are absorbed. This results from conservation of momentum – the momentum of the reflected photon exiting on the light side must be matched by a reaction on the vane that reflected it. The actual pressure exerted by light is far too small to move these vanes, but can be measured with devices such as the Nichols radiometer. It is in fact possible to make the radiometer spin in the opposite direction by either heating it or putting it in a cold environment (like a freezer) in absence of light, when black sides become cooler than the white ones due to the thermal radiation. Another incorrect theory was that the heat on the dark side was causing the material to outgas, which pushed the radiometer around. This was later effectively disproved by both Schuster's experiments (1876) and Lebedev's (1901) A partial explanation is that gas molecules hitting the warmer side of the vane will pick up some of the heat, bouncing off the vane with increased speed. Giving the molecule this extra boost effectively means that a minute pressure is exerted on the vane. The imbalance of this effect between the warmer black side and the cooler silver side means the net pressure on the vane is equivalent to a push on the black side and as a result the vanes spin round with the black side trailing. The problem with this idea is that while the faster moving molecules produce more force, they also do a better job of stopping other molecules from reaching the vane, so the net force on the vane should be the same. The greater temperature causes a decrease in local density which results in the same force on both sides. Years after this explanation was dismissed, Albert Einstein showed that the two pressures do not cancel out exactly at the edges of the vanes because of the temperature difference there. The force predicted by Einstein would be enough to move the vanes, but not fast enough. The currently accepted theory was formulated by Osborne Reynolds, who theorized that thermal transpiration was the cause of the motion. Reynolds found that if a porous plate is kept hotter on one side than the other, the interactions between gas molecules and the plates are such that gas will flow through from the hotter to the cooler side. The vanes of a typical Crookes radiometer are not porous, but the space past their edges behaves like the pores in Reynolds's plate. On average, the gas molecules move from the hot side toward the cold side whenever the pressure ratio is less than the square root of the (absolute) temperature ratio. The pressure difference causes the vane to move, cold (white) side forward due to the tangential force of the movement of the rarefied gas moving from the hotter edge to the colder edge. The Reynolds paper went unpublished for a while because it was refereed by Maxwell, who then published a paper of his own, which contained a critique of the mathematics in Reynolds's unpublished paper. Maxwell died that year and the Royal Society refused to publish Reynolds's critique of Maxwell's rebuttal to Reynolds's unpublished paper, as it was felt that this would be an inappropriate argument when one of the people involved had already died. To rotate, a light mill does not have to be coated with different colors across each vane. In 2009, researchers at the University of Texas, Austin created a monocolored light mill which has four curved vanes; each vane forms a convex and a concave surface. The light mill is uniformly coated by gold nanocrystals, which are a strong light absorber. Upon exposure, due to geometric effect, the convex side of the vane receives more photon energy than the concave side does, and subsequently the gas molecules receive more heat from the convex side than from the concave side. At rough vacuum, this asymmetric heating effect generates a net gas movement across each vane, from the concave side to the convex side, as shown by the researchers' direct simulation Monte Carlo modeling. The gas movement causes the light mill to rotate with the concave side moving forward, due to Newton's third law. This monocolored design promotes the fabrication of micrometer- or nanometer-scaled light mills, as it is difficult to pattern materials of distinct optical properties within a very narrow, three-dimensional space. The thermal creep from the hot side of a vane to the cold side has been demonstrated in a mill with horizontal vanes that have a two-tone surface with a black half and a white half. This design is called a Hettner radiometer. This radiometer's angular speed was found to be limited by the behavior of the drag force due to the gas in the vessel more than by the behavior of the thermal creep force. This design does not experience the Einstein effect because the faces are parallel to the temperature gradient. In 2010 researchers at the University of California, Berkeley succeeded in building a nanoscale light mill that works on an entirely different principle to the Crookes radiometer. A gold light mill, only 100 nanometers in diameter, was built and illuminated by laser light that had been tuned. The possibility of doing this had been suggested by the Princeton physicist Richard Beth in 1936. The torque was greatly enhanced by the resonant coupling of the incident light to plasmonic waves in the gold structure.	[ { "paragraph_id": 0, "text": "The Crookes radiometer (also known as a light mill) consists of an airtight glass bulb containing a partial vacuum, with a set of vanes which are mounted on a spindle inside. The vanes rotate when exposed to light, with faster rotation for more intense light, providing a quantitative measurement of electromagnetic radiation intensity.", "title": "" }, { "paragraph_id": 1, "text": "The reason for the rotation was a cause of much scientific debate in the ten years following the invention of the device, but in 1879 the currently accepted explanation for the rotation was published. Today the device is mainly used in physics education as a demonstration of a heat engine run by light energy.", "title": "" }, { "paragraph_id": 2, "text": "It was invented in 1873 by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weighings were disturbed when sunlight shone on the balance. Investigating this effect, he created the device named after him.", "title": "" }, { "paragraph_id": 3, "text": "It is still manufactured and sold as an educational aid or for curiosity.", "title": "" }, { "paragraph_id": 4, "text": "The radiometer is made from a glass bulb from which much of the air has been removed to form a partial vacuum. Inside the bulb, on a low-friction spindle, is a rotor with several (usually four) vertical lightweight vanes spaced equally around the axis. The vanes are polished or white on one side and black on the other.", "title": "General description" }, { "paragraph_id": 5, "text": "When exposed to sunlight, artificial light, or infrared radiation (even the heat of a hand nearby can be enough), the vanes turn with no apparent motive power, the dark sides retreating from the radiation source and the light sides advancing.", "title": "General description" }, { "paragraph_id": 6, "text": "Cooling the radiometer causes rotation in the opposite direction.", "title": "General description" }, { "paragraph_id": 7, "text": "The effect begins to be observed at partial vacuum pressures of several hundred pascals (or several torrs), reaches a peak at around 1 pascal (0.0075 torrs) and has disappeared by the time the vacuum reaches 1×10 pascals (7.5×10 torrs) (see explanations note 1). At these very high vacuums the effect of photon radiation pressure on the vanes can be observed in very sensitive apparatus (see Nichols radiometer), but this is insufficient to cause rotation.", "title": "General description" }, { "paragraph_id": 8, "text": "The prefix \"radio-\" in the title originates from the combining form of Latin radius, a ray: here it refers to electromagnetic radiation. A Crookes radiometer, consistent with the suffix \"-meter\" in its title, can provide a quantitative measurement of electromagnetic radiation intensity. This can be done, for example, by visual means (e.g., a spinning slotted disk, which functions as a simple stroboscope) without interfering with the measurement itself.", "title": "General description" }, { "paragraph_id": 9, "text": "Radiometers are now commonly sold worldwide as a novelty ornament; needing no batteries, but only light to get the vanes to turn. They come in various forms, such as the one pictured, and are often used in science museums to illustrate \"radiation pressure\" – a scientific principle that they do not in fact demonstrate.", "title": "General description" }, { "paragraph_id": 10, "text": "When a radiant energy source is directed at a Crookes radiometer, the radiometer becomes a heat engine. The operation of a heat engine is based on a difference in temperature that is converted to a mechanical output. In this case, the black side of the vane becomes hotter than the other side, as radiant energy from a light source warms the black side by absorption faster than the silver or white side. The internal air molecules are heated up when they touch the black side of the vane. The warmer side of the vane is subjected to a force which moves it forward.", "title": "Thermodynamic explanation" }, { "paragraph_id": 11, "text": "The internal temperature rises as the black vanes impart heat to the air molecules, but the molecules are cooled again when they touch the bulb's glass surface, which is at ambient temperature. This heat loss through the glass keeps the internal bulb temperature steady with the result that the two sides of the vanes develop a temperature difference. The white or silver side of the vanes are slightly warmer than the internal air temperature but cooler than the black side, as some heat conducts through the vane from the black side. The two sides of each vane must be thermally insulated to some degree so that the polished or white side does not immediately reach the temperature of the black side. If the vanes are made of metal, then the black or white paint can be the insulation. The glass stays much closer to ambient temperature than the temperature reached by the black side of the vanes. The external air helps conduct heat away from the glass.", "title": "Thermodynamic explanation" }, { "paragraph_id": 12, "text": "The air pressure inside the bulb needs to strike a balance between too low and too high. A strong vacuum inside the bulb does not permit motion, because there are not enough air molecules to cause the air currents that propel the vanes and transfer heat to the outside before both sides of each vane reach thermal equilibrium by heat conduction through the vane material. High inside pressure inhibits motion because the temperature differences are not enough to push the vanes through the higher concentration of air: there is too much air resistance for \"eddy currents\" to occur, and any slight air movement caused by the temperature difference is damped by the higher pressure before the currents can \"wrap around\" to the other side.", "title": "Thermodynamic explanation" }, { "paragraph_id": 13, "text": "When the radiometer is heated in the absence of a light source, it turns in the forward direction (i.e. black sides trailing). If a person's hands are placed around the glass without touching it, the vanes will turn slowly or not at all, but if the glass is touched to warm it quickly, they will turn more noticeably. Directly heated glass gives off enough infrared radiation to turn the vanes, but glass blocks much of the far-infrared radiation from a source of warmth not in contact with it. However, near-infrared and visible light more easily penetrate the glass.", "title": "Thermodynamic explanation" }, { "paragraph_id": 14, "text": "If the glass is cooled quickly in the absence of a strong light source by putting ice on the glass or placing it in the freezer with the door almost closed, it turns backwards (i.e. the silver sides trail). This demonstrates radiation from the black sides of the vanes rather than absorption. The wheel turns backwards because the net exchange of heat between the black sides and the environment initially cools the black sides faster than the white sides. Upon reaching equilibrium, typically after a minute or two, reverse rotation ceases. This contrasts with sunlight, with which forward rotation can be maintained all day.", "title": "Thermodynamic explanation" }, { "paragraph_id": 15, "text": "Over the years, there have been many attempts to explain how a Crookes radiometer works:", "title": "Explanations for the force on the vanes" }, { "paragraph_id": 16, "text": "Crookes incorrectly suggested that the force was due to the pressure of light. This theory was originally supported by James Clerk Maxwell, who had predicted this force. This explanation is still often seen in leaflets packaged with the device. The first experiment to test this theory was done by Arthur Schuster in 1876, who observed that there was a force on the glass bulb of the Crookes radiometer that was in the opposite direction to the rotation of the vanes. This showed that the force turning the vanes was generated inside the radiometer. If light pressure were the cause of the rotation, then the better the vacuum in the bulb, the less air resistance to movement, and the faster the vanes should spin. In 1901, with a better vacuum pump, Pyotr Lebedev showed that in fact, the radiometer only works when there is low-pressure gas in the bulb, and the vanes stay motionless in a hard vacuum. Finally, if light pressure were the motive force, the radiometer would spin in the opposite direction, as the photons on the shiny side being reflected would deposit more momentum than on the black side, where the photons are absorbed. This results from conservation of momentum – the momentum of the reflected photon exiting on the light side must be matched by a reaction on the vane that reflected it. The actual pressure exerted by light is far too small to move these vanes, but can be measured with devices such as the Nichols radiometer. It is in fact possible to make the radiometer spin in the opposite direction by either heating it or putting it in a cold environment (like a freezer) in absence of light, when black sides become cooler than the white ones due to the thermal radiation.", "title": "Explanations for the force on the vanes" }, { "paragraph_id": 17, "text": "Another incorrect theory was that the heat on the dark side was causing the material to outgas, which pushed the radiometer around. This was later effectively disproved by both Schuster's experiments (1876) and Lebedev's (1901)", "title": "Explanations for the force on the vanes" }, { "paragraph_id": 18, "text": "A partial explanation is that gas molecules hitting the warmer side of the vane will pick up some of the heat, bouncing off the vane with increased speed. Giving the molecule this extra boost effectively means that a minute pressure is exerted on the vane. The imbalance of this effect between the warmer black side and the cooler silver side means the net pressure on the vane is equivalent to a push on the black side and as a result the vanes spin round with the black side trailing. The problem with this idea is that while the faster moving molecules produce more force, they also do a better job of stopping other molecules from reaching the vane, so the net force on the vane should be the same. The greater temperature causes a decrease in local density which results in the same force on both sides. Years after this explanation was dismissed, Albert Einstein showed that the two pressures do not cancel out exactly at the edges of the vanes because of the temperature difference there. The force predicted by Einstein would be enough to move the vanes, but not fast enough.", "title": "Explanations for the force on the vanes" }, { "paragraph_id": 19, "text": "The currently accepted theory was formulated by Osborne Reynolds, who theorized that thermal transpiration was the cause of the motion. Reynolds found that if a porous plate is kept hotter on one side than the other, the interactions between gas molecules and the plates are such that gas will flow through from the hotter to the cooler side. The vanes of a typical Crookes radiometer are not porous, but the space past their edges behaves like the pores in Reynolds's plate. On average, the gas molecules move from the hot side toward the cold side whenever the pressure ratio is less than the square root of the (absolute) temperature ratio. The pressure difference causes the vane to move, cold (white) side forward due to the tangential force of the movement of the rarefied gas moving from the hotter edge to the colder edge.", "title": "Explanations for the force on the vanes" }, { "paragraph_id": 20, "text": "The Reynolds paper went unpublished for a while because it was refereed by Maxwell, who then published a paper of his own, which contained a critique of the mathematics in Reynolds's unpublished paper. Maxwell died that year and the Royal Society refused to publish Reynolds's critique of Maxwell's rebuttal to Reynolds's unpublished paper, as it was felt that this would be an inappropriate argument when one of the people involved had already died.", "title": "Explanations for the force on the vanes" }, { "paragraph_id": 21, "text": "To rotate, a light mill does not have to be coated with different colors across each vane. In 2009, researchers at the University of Texas, Austin created a monocolored light mill which has four curved vanes; each vane forms a convex and a concave surface. The light mill is uniformly coated by gold nanocrystals, which are a strong light absorber. Upon exposure, due to geometric effect, the convex side of the vane receives more photon energy than the concave side does, and subsequently the gas molecules receive more heat from the convex side than from the concave side. At rough vacuum, this asymmetric heating effect generates a net gas movement across each vane, from the concave side to the convex side, as shown by the researchers' direct simulation Monte Carlo modeling. The gas movement causes the light mill to rotate with the concave side moving forward, due to Newton's third law. This monocolored design promotes the fabrication of micrometer- or nanometer-scaled light mills, as it is difficult to pattern materials of distinct optical properties within a very narrow, three-dimensional space.", "title": "All-black light mill" }, { "paragraph_id": 22, "text": "The thermal creep from the hot side of a vane to the cold side has been demonstrated in a mill with horizontal vanes that have a two-tone surface with a black half and a white half. This design is called a Hettner radiometer. This radiometer's angular speed was found to be limited by the behavior of the drag force due to the gas in the vessel more than by the behavior of the thermal creep force. This design does not experience the Einstein effect because the faces are parallel to the temperature gradient.", "title": "Horizontal vane light mill" }, { "paragraph_id": 23, "text": "In 2010 researchers at the University of California, Berkeley succeeded in building a nanoscale light mill that works on an entirely different principle to the Crookes radiometer. A gold light mill, only 100 nanometers in diameter, was built and illuminated by laser light that had been tuned. The possibility of doing this had been suggested by the Princeton physicist Richard Beth in 1936. The torque was greatly enhanced by the resonant coupling of the incident light to plasmonic waves in the gold structure.", "title": "Nanoscale light mill" } ]	The Crookes radiometer consists of an airtight glass bulb containing a partial vacuum, with a set of vanes which are mounted on a spindle inside. The vanes rotate when exposed to light, with faster rotation for more intense light, providing a quantitative measurement of electromagnetic radiation intensity. The reason for the rotation was a cause of much scientific debate in the ten years following the invention of the device, but in 1879 the currently accepted explanation for the rotation was published. Today the device is mainly used in physics education as a demonstration of a heat engine run by light energy. It was invented in 1873 by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weighings were disturbed when sunlight shone on the balance. Investigating this effect, he created the device named after him. It is still manufactured and sold as an educational aid or for curiosity.	2002-02-25T15:51:15Z	2023-10-09T19:02:47Z	[ "Template:Cite web", "Template:Cite patent", "Template:Short description", "Template:Convert", "Template:Reflist", "Template:Commons category", "Template:Use dmy dates", "Template:Cite journal", "Template:Cite book" ]	https://en.wikipedia.org/wiki/Crookes_radiometer
7,022	Cold Chisel	Cold Chisel are an Australian pub rock band, which formed in Adelaide in 1973 by mainstay members Ian Moss on guitar and vocals, Steve Prestwich on drums and Don Walker on piano and keyboards. They were soon joined by Jimmy Barnes (at the time known as Jim Barnes) on lead vocals and, in 1975, Phil Small became their bass guitarist. The group disbanded in late 1983 but subsequently reformed several times. Musicologist Ian McFarlane wrote that they became "one of Australia's best-loved groups" as well as "one of the best live bands", fusing "a combination of rockabilly, hard rock and rough-house soul'n'blues that was defiantly Australian in outlook." Eight of their studio albums have reached the Australian top five, Breakfast at Sweethearts (February 1979), East (June 1980), Circus Animals (March 1982, No. 1), Twentieth Century (April 1984, No. 1), The Last Wave of Summer (October 1998, No. 1), No Plans (April 2012), The Perfect Crime (October 2015) and Blood Moon (December 2019, No. 1). Their top 10 singles are "Forever Now" (1982), "Hands Out of My Pocket" (1994) and "The Things I Love in You" (1998). At the ARIA Music Awards of 1993 they were inducted into the Hall of Fame. In 2001 Australasian Performing Right Association (APRA), listed their single, "Khe Sanh" (May 1978), at No. 8 of the all-time best Australian songs. Circus Animals was listed at No. 4 in the book, 100 Best Australian Albums (October 2010), while East appeared at No. 53. They won The Ted Albert Award for Outstanding Services to Australian Music at the APRA Music Awards of 2016. Cold Chisel's popularity is almost entirely confined to Australia and New Zealand, with their songs and musicianship highlighting working class life. Their early bass guitarist (1973–75), Les Kaczmarek, died in December 2008; Steve Prestwich died of a brain tumour in January 2011. Cold Chisel originally formed as Orange in Adelaide in 1973 as a heavy metal band by Ted Broniecki on keyboards, Les Kaczmarek on bass guitar, Ian Moss on guitar and vocals, Steve Prestwich on drums and Don Walker on piano. Their early material included cover versions of Free and Deep Purple material. Broniecki left by September 1973 and seventeen-year-old singer, Jimmy Barnes – called Jim Barnes during their initial career – joined in December. The group changed its name several times before settling on Cold Chisel in 1974 after Walker's song of that title. Barnes' relationship with the others was volatile: he often came to blows with Prestwich and left the band several times. During these periods Moss would handle vocals until Barnes returned. Walker emerged as the group's primary songwriter and spent 1974 in Armidale, completing his studies in quantum mechanics. Barnes' older brother, John Swan, was a member of Cold Chisel around this time, providing backing vocals and percussion. After several violent incidents, including beating up a roadie, he was fired. In mid-1975 Barnes left to join Fraternity as Bon Scott's replacement on lead vocals, alongside Swan on drums and vocals. Kaczmarek left Cold Chisel during 1975 and was replaced by Phil Small on bass guitar. In November of that year, without Barnes, they recorded their early demos. In May 1976 Cold Chisel relocated to Melbourne, but "frustrated by their lack of progress," they moved on to Sydney in early 1977. In May 1977, Barnes told his fellow members that he would leave again. From July he joined Feather for a few weeks, on co-lead vocals with Swan – they were a Sydney-based hard rock group, which had evolved from Blackfeather. A farewell performance for Cold Chisel, with Barnes aboard, went so well that the singer changed his mind and returned. In the following month the Warner Music Group signed the group. In the early months of 1978 Cold Chisel recorded their self-titled debut album with their manager and producer, Peter Walker (ex-Bakery). All tracks were written by Don Walker, except "Juliet", where Barnes composed its melody and Walker the lyrics. Cold Chisel was released in April and included guest studio musicians: Dave Blight on harmonica (who became a regular on-stage guest) and saxophonists Joe Camilleri and Wilbur Wilde (from Jo Jo Zep & The Falcons). Australian musicologist, Ian McFarlane, described how, "[it] failed to capture the band's renowned live firepower, despite the presence of such crowd favourites as 'Khe Sanh', 'Home and Broken Hearted' and 'One Long Day'." It reached the top 40 on the Kent Music Report and was certified gold. In May 1978, "Khe Sanh", was released as their debut single but it was declared too offensive for commercial radio due to the sexual implication of the lyrics, "Their legs were often open/But their minds were always closed." However, it was played regularly on Sydney youth radio station, Double J, which was not subject to the restrictions as it was part of the Australian Broadcasting Corporation (ABC). Another ABC program, Countdown's producers asked them to change the lyric but they refused. Despite such setbacks, "Khe Sanh" reached No. 41 on the Kent Music Report singles chart. It became Cold Chisel's signature tune and was popular among their fans. They later remixed the track, with re-recorded vocals, for inclusion on the international version of their third album, East (June 1980). The band's next release was a live five-track extended play, You're Thirteen, You're Beautiful, and You're Mine, in November 1978. McFarlane observed, "It captured the band in its favoured element, fired by raucous versions of Walker's 'Merry-Go-Round' and Chip Taylor's 'Wild Thing'." It was recorded at the Regent Theatre, Sydney in 1977, when they had Midnight Oil as one of the support acts. Australian writer, Ed Nimmervoll, described a typical performance by Cold Chisel, "Everybody was talking about them anyway, drawn by the songs, and Jim Barnes' presence on stage, crouched, sweating, as he roared his vocals into the microphone at the top of his lungs." The EP peaked at No. 35 on the Kent Music Report Singles Chart. "Merry Go Round" was re-recorded for their second studio album, Breakfast at Sweethearts (February 1979). This was recorded between July 1978 and January 1979 with producer, Richard Batchens, who had previously worked with Richard Clapton, Sherbet and Blackfeather. Batchens smoothed out the band's rough edges and attempted to give their songs a sophisticated sound. With regards to this approach, the band were unsatisfied with the finished product. It peaked at No. 4 and was the top selling album in Australia by a locally based artist for that year; it was certified platinum. The majority of its tracks were written by Walker, with Barnes and Walker on the lead single, "Goodbye (Astrid, Goodbye)" (September 1978), and Moss contributed to "Dresden". "Goodbye (Astrid, Goodbye)" became a live favourite, and was covered by U2 during Australian tours in the 1980s. Cold Chisel had gained national chart success and increased popularity of their fans without significant commercial radio airplay. The members developed reputations for wild behaviour, particularly Barnes who claimed to have had sex with over 1000 women and who consumed more than a bottle of vodka each night while performing. In late 1979, severing their relationship with Batchens, Cold Chisel chose Mark Opitz to produce the next single, "Choirgirl" (November). It is a Walker composition dealing with a young woman's experience with abortion. Despite the subject matter it reached No. 14. "Choirgirl" paved the way for the group's third studio album, East (June 1980), with Opitz producing. Recorded over two months in early 1980, East, reached No. 2 and is the second highest selling album by an Australian artist for that year. The Australian Women's Weekly's Gregg Flynn noticed, "[they are] one of the few Australian bands in which each member is capable of writing hit songs." Despite the continued dominance of Walker, the other members contributed more tracks to their play list, and this was their first album to have songs written by each one. McFarlane described it as, "a confident, fully realised work of tremendous scope." Nimmervoll explained how, "This time everything fell into place, the sound, the songs, the playing... East was a triumph. [The group] were now the undisputed No. 1 rock band in Australia." The album varied from straight ahead rock tracks, "Standing on the Outside" and "My Turn to Cry", to rockabilly-flavoured work-outs ("Rising Sun", written about Barnes' relationship with his then-girlfriend Jane Mahoney) and pop-laced love songs ("My Baby" by Phil Small, featuring Joe Camilleri on saxophone) to a poignant piano ballad about prison life, "Four Walls". The cover art showed Barnes reclined in a bathtub wearing a kamikaze bandanna in a room littered with junk and was inspired by Jacques-Louis David's 1793 painting, The Death of Marat. The Ian Moss-penned "Never Before" was chosen as the first song to air on the ABC's youth radio station, Triple J, when it switched to the FM band that year. Supporting the release of East, Cold Chisel embarked on the Youth in Asia Tour from May 1980, which took its name from a lyric in "Star Hotel". In late 1980, the Aboriginal rock reggae band No Fixed Address supported the band on its "Summer Offensive" tour to the east coast, with the final concert on 20 December at the University of Adelaide. The Youth in Asia Tour performances were used for Cold Chisel's double live album, Swingshift (March 1981). Nimmervoll declared, "[the group] rammed what they were all about with [this album]." In March 1981 the band won seven categories: Best Australian Album, Most Outstanding Achievement, Best Recorded Song Writer, Best Australian Producer, Best Australian Record Cover Design, Most Popular Group and Most Popular Record, at the Countdown/TV Week pop music awards for 1980. They attended the ceremony at the Sydney Entertainment Centre and were due to perform: however, as a protest against a TV magazine's involvement, they refused to accept any trophy and finished the night with, "My Turn to Cry". After one verse and chorus, they smashed up the set and left the stage. Swingshift debuted at No 1, which demonstrated their status as the highest selling local act. With a slightly different track-listing, East, was issued in the United States and they undertook their first US tour in mid-1981. Ahead of the tour they had issued, "My Baby", for the North America market and it reached the top 40 on Billboard's chart, Mainstream Rock. They were generally popular as a live act there, but the US branch of their label did little to promote the album. According to Barnes' biographer, Toby Creswell, at one point they were ushered into an office to listen to the US master tape to find it had substantial hiss and other ambient noise, which made it almost unable to be released. Notwithstanding, the album reached the lower region of the Billboard 200 in July. The group were booed off stage after a lacklustre performance in Dayton, Ohio in May 1981 opening for Ted Nugent. Other support slots they took were for Cheap Trick, Joe Walsh, Heart and the Marshall Tucker Band. European audiences were more accepting of the Australian band and they developed a fan base in Germany. In August 1981 Cold Chisel began work on a fourth studio album, Circus Animals (March 1982), again with Opitz producing. To launch the album, the band performed under a circus tent at Wentworth Park in Sydney and toured heavily once more, including a show in Darwin that attracted more than 10 percent of the city's population. It peaked at No. 1 in both Australia and on the Official New Zealand Music Chart. In October 2010 it was listed at No. 4 in the book, 100 Best Australian Albums, by music journalists, Creswell, Craig Mathieson and John O'Donnell. Its lead single, "You Got Nothing I Want" (November 1981), is an aggressive Barnes-penned hard rock track, which attacked the US industry for its handling of the band on their recent tour. The song caused problems for Barnes when he later attempted to break into the US market as a solo performer; senior music executives there continued to hold it against him. Like its predecessor, Circus Animals, contained songs of contrasting styles, with harder-edged tracks like "Bow River" and "Hound Dog" in place beside more expansive ballads such as the next two singles, "Forever Now" (March 1982) and "When the War Is Over" (August), both are written by Prestwich. "Forever Now" is their highest charting single in two Australasian markets: No. 4 on the Kent Music Report Singles Chart and No. 2 on the Official New Zealand Music Chart. "When the War Is Over" is the most covered Cold Chisel track – Uriah Heep included a version on their 1989 album, Raging Silence; John Farnham recorded it while he and Prestwich were members of Little River Band in the mid-1980s and again for his 1990 solo album, Age of Reason. The song was also a No. 1 hit for former Australian Idol contestant, Cosima De Vito, in 2004 and was performed by Bobby Flynn during that show's 2006 season. "Forever Now" was covered, as a country waltz, by Australian band, the Reels. Success outside Australasia continued to elude Cold Chisel and friction occurred between the members. According to McFarlane, "[the] failed attempts to break into the American market represented a major blow... [their] earthy, high-energy rock was overlooked." In early 1983 they toured Germany but the shows went so badly that in the middle of the tour Walker up-ended his keyboard and stormed off stage during one show. After returning to Australia, Prestwich was fired and replaced by Ray Arnott, formerly of the 1970s progressive rockers, Spectrum, and country rockers, the Dingoes. After this, Barnes requested a large advance from management. Now married with a young child, reckless spending had left him almost broke. His request was refused as there was a standing arrangement that any advance to one band member had to be paid to all the others. After a meeting on 17 August during which Barnes quit the band it was decided that the group would split up. A farewell concert series, The Last Stand, was planned and a final studio album, Twentieth Century (February 1984), was recorded. Prestwich returned for that tour, which began in October. Before the last four scheduled shows in Sydney, Barnes lost his voice and those dates were postponed to mid-December. The band's final performances were at the Sydney Entertainment Centre from 12 to 15 December 1983 – ten years since their first live appearance as Cold Chisel in Adelaide – and the group then disbanded. The Sydney shows formed the basis of a concert film, The Last Stand (July 1984), which became the biggest-selling cinema-released concert documentary by an Australian band to that time. Other recordings from the tour were used on a live album, The Barking Spiders Live: 1983 (1984), the title is a reference to the pseudonym the group occasionally used when playing warm-up shows before tours. Some were also used as b-sides for a three-CD singles package, Three Big XXX Hits, issued ahead of the release of their 1994 compilation album, Teenage Love. During breaks in the tour, Twentieth Century was recorded. It was a fragmentary process, spread across various studios and sessions as the individual members often refused to work together – both Arnott (on ten tracks) and Prestwich (on three tracks) are recorded as drummers. The album reached No. 1 and provided the singles "Saturday Night" (March 1984) and "Flame Trees" (August), both of which remain radio staples. "Flame Trees", co-written by Prestwich and Walker, took its title from the BBC series The Flame Trees of Thika, although it was lyrically inspired by Walker's hometown of Grafton. Barnes later recorded an acoustic version for his 1993 solo album, Flesh and Wood, and it was also covered by Sarah Blasko in 2006. Barnes launched his solo career in January 1984, which has provided nine Australian number-one studio albums and an array of hit singles, including "Too Much Ain't Enough Love", which peaked at No. 1. He has recorded with INXS, Tina Turner, Joe Cocker and John Farnham to become one of the country's most popular male rock singers. Prestwich joined Little River Band in 1984 and appeared on the albums Playing to Win and No Reins, before departing in 1986 to join Farnham's touring band. Moss, Small and Walker took extended breaks from music. Small maintained a low profile as a member in a variety of minor groups Pound, the Earls of Duke and the Outsiders. Walker formed Catfish in 1988, ostensibly a solo band with a variable membership, which included Moss, Charlie Owen and Dave Blight at times. Catfish's recordings during this phase attracted little commercial success. During 1988 and 1989 Walker wrote several tracks for Moss including the singles "Tucker's Daughter" (November 1988) and "Telephone Booth" (June 1989), which appeared on Moss' debut solo album, Matchbook (August 1989). Both the album and "Tucker's Daughter" peaked at No. 1. Moss won five trophies at the ARIA Music Awards of 1990. His other solo albums met with less chart or award success. Throughout the 1980s and most of the 1990s, Cold Chisel were courted to re-form but refused, at one point reportedly turning down a $5 million offer to play a sole show in each of the major Australian state capitals. Moss and Walker often collaborated on projects; neither worked with Barnes until Walker wrote "Stone Cold" for the singer's sixth studio album, Heat (October 1993). The pair recorded an acoustic version for Flesh and Wood (December). Thanks primarily to continued radio airplay and Barnes' solo success, Cold Chisel's legacy remained solidly intact. By the early 1990s the group had surpassed 3 million album sales, most sold since 1983. The 1991 compilation album, Chisel, was re-issued and re-packaged several times, once with the long-deleted 1978 EP as a bonus disc and a second time in 2001 as a double album. The Last Stand soundtrack album was finally released in 1992. In 1994 a complete album of previously unreleased demo and rare live recordings, Teenage Love, was released, which provided three singles. Cold Chisel reunited in October 1997, with the line-up of Barnes, Moss, Prestwich, Small and Walker. They recorded their sixth studio album, The Last Wave of Summer (October 1998), from February to July with the band members co-producing. They supported it with a national tour. The album debuted at No. 1 on the ARIA Albums Chart. In 2003 they re-grouped for the Ringside Tour and in 2005 again to perform at a benefit for the victims of the Boxing Day tsunami at the Myer Music Bowl in Melbourne. Founding bass guitarist, Les Kaczmarek, died of liver failure on 5 December 2008, aged 53. Walker described him as "a wonderful and beguiling man in every respect." On 10 September 2009 Cold Chisel announced they would reform for a one-off performance at the Sydney 500 V8 Supercars event on 5 December. The band performed at Stadium Australia to the largest crowd of its career, with more than 45,000 fans in attendance. They played a single live show in 2010: at the Deniliquin ute muster in October. In December Moss confirmed that Cold Chisel were working on new material for an album. In January 2011 Steve Prestwich was diagnosed with a brain tumour; he underwent surgery on 14 January but never regained consciousness and died two days later, aged 56. All six of Cold Chisel's studio albums were re-released in digital and CD formats in mid-2011. Three digital-only albums were released – Never Before, Besides and Covered – as well as a new compilation album, The Best of Cold Chisel: All for You, which peaked at No. 2 on the ARIA Charts. The thirty-date Light the Nitro Tour was announced in July along with the news that former Divinyls and Catfish drummer, Charley Drayton, had replaced Prestwich. Most shows on the tour sold out within days and new dates were later announced for early 2012. No Plans, their seventh studio album, was released in April 2012, with Kevin Shirley producing, which peaked at No. 2. The Australian's Stephen Fitzpatrick rated it as four-and-a-half out of five and found its lead track, "All for You", "speaks of redemption; of a man's ability to make something of himself through love." The track "I Got Things to Do" was written and sung by Prestwich, which Fitzpatrick described as "the bittersweet finale", a song that had "a vocal track the other band members did not know existed until after [Prestwich's] death." Midway through 2012 they embarked on a short UK tour and played with Soundgarden and Mars Volta at Hard Rock Calling at London's Hyde Park. The group's eighth studio album, The Perfect Crime, appeared in October 2015, again with Shirley producing, which peaked at No. 2. Martin Boulton of The Sydney Morning Herald rated it at four out of five stars and explained that the album does what Cold Chisel always does: "work incredibly hard, not take any shortcuts and play the hell out of the songs." The album, Boulton writes, "delves further back to their rock'n'roll roots with chief songwriter [Walker] carving up the keys, guitarist [Moss] both gritty and sublime and the [Small/Drayton] engine room firing on every cylinder. Barnes' voice sounds worn, wonderful and better than ever." The band's latest album, Blood Moon, was released in December 2019. The album debuted at No. 1 on the ARIA Album Chart, the band's fifth to reach the top. Half of the songs had lyrics written by Barnes and music by Walker, a new combination for Cold Chisel, with Barnes noting his increased confidence after writing two autobiographies. McFarlane described Cold Chisel's early career in his Encyclopedia of Australian Rock and Pop (1999), "after ten years on the road, [they] called it a day. Not that the band split up for want of success; by that stage [they] had built up a reputation previously uncharted in Australian rock history. By virtue of the profound effect the band's music had on the many thousands of fans who witnessed its awesome power, Cold Chisel remains one of Australia's best-loved groups. As one of the best live bands of its day, [they] fused a combination of rockabilly, hard rock and rough-house soul'n'blues that was defiantly Australian in outlook." The Canberra Times' Luis Feliu, in July 1978, observed how, "This is not just another Australian rock band, no mediocrity here, and their honest, hard-working approach looks like paying off." While "the range of styles tackled and done convincingly, from hard rock to blues, boogie, rhythm and blues, is where the appeal lies." Influences from blues and early rock n' roll was broadly apparent, fostered by the love of those styles by Moss, Barnes and Walker. Small and Prestwich contributed strong pop sensibilities. This allowed volatile rock songs like "You Got Nothing I Want" and "Merry-Go-Round" to stand beside thoughtful ballads like "Choirgirl", pop-flavoured love songs like "My Baby" and caustic political statements like "Star Hotel", an attack on the late 1970s government of Malcolm Fraser, inspired by the Star Hotel riot in Newcastle. The songs were not overtly political but rather observations of everyday life within Australian society and culture, in which the members with their various backgrounds (Moss was from Alice Springs, Walker grew up in rural New South Wales, Barnes and Prestwich were working-class immigrants from the UK) were quite well able to provide. Cold Chisel's songs were about distinctly Australian experiences, a factor often cited as a major reason for the band's lack of international appeal. "Saturday Night" and "Breakfast at Sweethearts" were observations of the urban experience of Sydney's Kings Cross district where Walker lived for many years. "Misfits", which featured on the b-side to "My Baby", was about homeless kids in the suburbs surrounding Sydney. Songs like "Shipping Steel" and "Standing on The Outside" were working class anthems and many others featured characters trapped in mundane, everyday existences, yearning for the good times of the past ("Flame Trees") or for something better from life ("Bow River"). Alongside contemporaries like The Angels and Midnight Oil, Cold Chisel was renowned as one of the most dynamic live acts of their day and from early in their career concerts routinely became sell-out events. But the band was also famous for its wild lifestyle, particularly the hard-drinking Barnes, who played his role as one of the wild men of Australian rock to the hilt, never seen on stage without at least one bottle of vodka and often so drunk he could barely stand upright. Despite this, by 1982 he was a devoted family man who refused to tour without his wife and daughter. All the other band members were also settled or married; Ian Moss had a long-term relationship with the actress, Megan Williams, (she even sang on Twentieth Century) whose own public persona could have hardly been more different. It was the band's public image that often had them compared less favourably with other important acts like Midnight Oil, whose music and politics (while rather more overt) were often similar but whose image and reputation was more clean-cut. Cold Chisel remained hugely popular however and by the mid-1990s they continued to sell records at such a consistent rate they became the first Australian band to achieve higher sales after their split than during their active years. At the ARIA Music Awards of 1993 they were inducted into the Hall of Fame. While repackages and compilations accounted for much of these sales, 1994's Teenage Love provided two of its singles, which were top ten hits. When the group finally reformed in 1998 the resultant album was also a major hit and the follow-up tour sold out almost immediately. In 2001 Australasian Performing Right Association (APRA), listed their single, "Khe Sanh" (May 1978), at No. 8 of the all-time best Australian songs. Cold Chisel were one of the first Australian acts to have become the subject of a major tribute album. In 2007, Standing on the Outside: The Songs of Cold Chisel was released, featuring a collection of the band's songs as performed by artists including The Living End, Evermore, Something for Kate, Pete Murray, Katie Noonan, You Am I, Paul Kelly, Alex Lloyd, Thirsty Merc and Ben Lee, many of whom were children when Cold Chisel first disbanded and some, like the members of Evermore, had not even been born. Circus Animals was listed at No. 4 in the book, 100 Best Australian Albums (October 2010), while East appeared at No. 53. They won The Ted Albert Award for Outstanding Services to Australian Music at the APRA Music Awards of 2016. In March 2021, a previously unnamed lane off Burnett Street (off Currie Street) in the Adelaide central business district, near where the band had its first residency in the 1970s, was officially named Cold Chisel Lane. On one of its walls, there is a 50-metre (160 ft) mural by Adelaide artist James Dodd, inspired by the band. The APRA Awards are presented annually from 1982 by the Australasian Performing Right Association (APRA), "honouring composers and songwriters". They commenced in 1982. The ARIA Music Awards is an annual awards ceremony that recognises excellence, innovation, and achievement across all genres of Australian music. They commenced in 1987. Cold Chisel was inducted into the Hall of Fame in 1993. The Helpmann Awards is an awards show, celebrating live entertainment and performing arts in Australia, presented by industry group Live Performance Australia since 2001. Note: 2020 and 2021 were cancelled due to the COVID-19 pandemic. The South Australian Music Awards are annual awards that exist to recognise, promote and celebrate excellence in the South Australian contemporary music industry. They commenced in 2012. The South Australian Music Hall of Fame celebrates the careers of successful music industry personalities. Countdown was an Australian pop music TV series on national broadcaster ABC-TV from 1974–1987, it presented music awards from 1979–1987, initially in conjunction with magazine TV Week. The TV Week / Countdown Awards were a combination of popular-voted and peer-voted awards.	[ { "paragraph_id": 0, "text": "Cold Chisel are an Australian pub rock band, which formed in Adelaide in 1973 by mainstay members Ian Moss on guitar and vocals, Steve Prestwich on drums and Don Walker on piano and keyboards. They were soon joined by Jimmy Barnes (at the time known as Jim Barnes) on lead vocals and, in 1975, Phil Small became their bass guitarist. The group disbanded in late 1983 but subsequently reformed several times. Musicologist Ian McFarlane wrote that they became \"one of Australia's best-loved groups\" as well as \"one of the best live bands\", fusing \"a combination of rockabilly, hard rock and rough-house soul'n'blues that was defiantly Australian in outlook.\"", "title": "" }, { "paragraph_id": 1, "text": "Eight of their studio albums have reached the Australian top five, Breakfast at Sweethearts (February 1979), East (June 1980), Circus Animals (March 1982, No. 1), Twentieth Century (April 1984, No. 1), The Last Wave of Summer (October 1998, No. 1), No Plans (April 2012), The Perfect Crime (October 2015) and Blood Moon (December 2019, No. 1). Their top 10 singles are \"Forever Now\" (1982), \"Hands Out of My Pocket\" (1994) and \"The Things I Love in You\" (1998).", "title": "" }, { "paragraph_id": 2, "text": "At the ARIA Music Awards of 1993 they were inducted into the Hall of Fame. In 2001 Australasian Performing Right Association (APRA), listed their single, \"Khe Sanh\" (May 1978), at No. 8 of the all-time best Australian songs. Circus Animals was listed at No. 4 in the book, 100 Best Australian Albums (October 2010), while East appeared at No. 53. They won The Ted Albert Award for Outstanding Services to Australian Music at the APRA Music Awards of 2016. Cold Chisel's popularity is almost entirely confined to Australia and New Zealand, with their songs and musicianship highlighting working class life. Their early bass guitarist (1973–75), Les Kaczmarek, died in December 2008; Steve Prestwich died of a brain tumour in January 2011.", "title": "" }, { "paragraph_id": 3, "text": "Cold Chisel originally formed as Orange in Adelaide in 1973 as a heavy metal band by Ted Broniecki on keyboards, Les Kaczmarek on bass guitar, Ian Moss on guitar and vocals, Steve Prestwich on drums and Don Walker on piano. Their early material included cover versions of Free and Deep Purple material. Broniecki left by September 1973 and seventeen-year-old singer, Jimmy Barnes – called Jim Barnes during their initial career – joined in December.", "title": "History" }, { "paragraph_id": 4, "text": "The group changed its name several times before settling on Cold Chisel in 1974 after Walker's song of that title. Barnes' relationship with the others was volatile: he often came to blows with Prestwich and left the band several times. During these periods Moss would handle vocals until Barnes returned. Walker emerged as the group's primary songwriter and spent 1974 in Armidale, completing his studies in quantum mechanics. Barnes' older brother, John Swan, was a member of Cold Chisel around this time, providing backing vocals and percussion. After several violent incidents, including beating up a roadie, he was fired. In mid-1975 Barnes left to join Fraternity as Bon Scott's replacement on lead vocals, alongside Swan on drums and vocals.", "title": "History" }, { "paragraph_id": 5, "text": "Kaczmarek left Cold Chisel during 1975 and was replaced by Phil Small on bass guitar. In November of that year, without Barnes, they recorded their early demos.", "title": "History" }, { "paragraph_id": 6, "text": "In May 1976 Cold Chisel relocated to Melbourne, but \"frustrated by their lack of progress,\" they moved on to Sydney in early 1977. In May 1977, Barnes told his fellow members that he would leave again. From July he joined Feather for a few weeks, on co-lead vocals with Swan – they were a Sydney-based hard rock group, which had evolved from Blackfeather. A farewell performance for Cold Chisel, with Barnes aboard, went so well that the singer changed his mind and returned. In the following month the Warner Music Group signed the group.", "title": "History" }, { "paragraph_id": 7, "text": "In the early months of 1978 Cold Chisel recorded their self-titled debut album with their manager and producer, Peter Walker (ex-Bakery). All tracks were written by Don Walker, except \"Juliet\", where Barnes composed its melody and Walker the lyrics. Cold Chisel was released in April and included guest studio musicians: Dave Blight on harmonica (who became a regular on-stage guest) and saxophonists Joe Camilleri and Wilbur Wilde (from Jo Jo Zep & The Falcons). Australian musicologist, Ian McFarlane, described how, \"[it] failed to capture the band's renowned live firepower, despite the presence of such crowd favourites as 'Khe Sanh', 'Home and Broken Hearted' and 'One Long Day'.\" It reached the top 40 on the Kent Music Report and was certified gold.", "title": "History" }, { "paragraph_id": 8, "text": "In May 1978, \"Khe Sanh\", was released as their debut single but it was declared too offensive for commercial radio due to the sexual implication of the lyrics, \"Their legs were often open/But their minds were always closed.\" However, it was played regularly on Sydney youth radio station, Double J, which was not subject to the restrictions as it was part of the Australian Broadcasting Corporation (ABC). Another ABC program, Countdown's producers asked them to change the lyric but they refused. Despite such setbacks, \"Khe Sanh\" reached No. 41 on the Kent Music Report singles chart. It became Cold Chisel's signature tune and was popular among their fans. They later remixed the track, with re-recorded vocals, for inclusion on the international version of their third album, East (June 1980).", "title": "History" }, { "paragraph_id": 9, "text": "The band's next release was a live five-track extended play, You're Thirteen, You're Beautiful, and You're Mine, in November 1978. McFarlane observed, \"It captured the band in its favoured element, fired by raucous versions of Walker's 'Merry-Go-Round' and Chip Taylor's 'Wild Thing'.\" It was recorded at the Regent Theatre, Sydney in 1977, when they had Midnight Oil as one of the support acts. Australian writer, Ed Nimmervoll, described a typical performance by Cold Chisel, \"Everybody was talking about them anyway, drawn by the songs, and Jim Barnes' presence on stage, crouched, sweating, as he roared his vocals into the microphone at the top of his lungs.\" The EP peaked at No. 35 on the Kent Music Report Singles Chart.", "title": "History" }, { "paragraph_id": 10, "text": "\"Merry Go Round\" was re-recorded for their second studio album, Breakfast at Sweethearts (February 1979). This was recorded between July 1978 and January 1979 with producer, Richard Batchens, who had previously worked with Richard Clapton, Sherbet and Blackfeather. Batchens smoothed out the band's rough edges and attempted to give their songs a sophisticated sound. With regards to this approach, the band were unsatisfied with the finished product. It peaked at No. 4 and was the top selling album in Australia by a locally based artist for that year; it was certified platinum. The majority of its tracks were written by Walker, with Barnes and Walker on the lead single, \"Goodbye (Astrid, Goodbye)\" (September 1978), and Moss contributed to \"Dresden\". \"Goodbye (Astrid, Goodbye)\" became a live favourite, and was covered by U2 during Australian tours in the 1980s.", "title": "History" }, { "paragraph_id": 11, "text": "Cold Chisel had gained national chart success and increased popularity of their fans without significant commercial radio airplay. The members developed reputations for wild behaviour, particularly Barnes who claimed to have had sex with over 1000 women and who consumed more than a bottle of vodka each night while performing. In late 1979, severing their relationship with Batchens, Cold Chisel chose Mark Opitz to produce the next single, \"Choirgirl\" (November). It is a Walker composition dealing with a young woman's experience with abortion. Despite the subject matter it reached No. 14.", "title": "History" }, { "paragraph_id": 12, "text": "\"Choirgirl\" paved the way for the group's third studio album, East (June 1980), with Opitz producing. Recorded over two months in early 1980, East, reached No. 2 and is the second highest selling album by an Australian artist for that year. The Australian Women's Weekly's Gregg Flynn noticed, \"[they are] one of the few Australian bands in which each member is capable of writing hit songs.\" Despite the continued dominance of Walker, the other members contributed more tracks to their play list, and this was their first album to have songs written by each one. McFarlane described it as, \"a confident, fully realised work of tremendous scope.\" Nimmervoll explained how, \"This time everything fell into place, the sound, the songs, the playing... East was a triumph. [The group] were now the undisputed No. 1 rock band in Australia.\"", "title": "History" }, { "paragraph_id": 13, "text": "The album varied from straight ahead rock tracks, \"Standing on the Outside\" and \"My Turn to Cry\", to rockabilly-flavoured work-outs (\"Rising Sun\", written about Barnes' relationship with his then-girlfriend Jane Mahoney) and pop-laced love songs (\"My Baby\" by Phil Small, featuring Joe Camilleri on saxophone) to a poignant piano ballad about prison life, \"Four Walls\". The cover art showed Barnes reclined in a bathtub wearing a kamikaze bandanna in a room littered with junk and was inspired by Jacques-Louis David's 1793 painting, The Death of Marat. The Ian Moss-penned \"Never Before\" was chosen as the first song to air on the ABC's youth radio station, Triple J, when it switched to the FM band that year. Supporting the release of East, Cold Chisel embarked on the Youth in Asia Tour from May 1980, which took its name from a lyric in \"Star Hotel\".", "title": "History" }, { "paragraph_id": 14, "text": "In late 1980, the Aboriginal rock reggae band No Fixed Address supported the band on its \"Summer Offensive\" tour to the east coast, with the final concert on 20 December at the University of Adelaide.", "title": "History" }, { "paragraph_id": 15, "text": "The Youth in Asia Tour performances were used for Cold Chisel's double live album, Swingshift (March 1981). Nimmervoll declared, \"[the group] rammed what they were all about with [this album].\" In March 1981 the band won seven categories: Best Australian Album, Most Outstanding Achievement, Best Recorded Song Writer, Best Australian Producer, Best Australian Record Cover Design, Most Popular Group and Most Popular Record, at the Countdown/TV Week pop music awards for 1980. They attended the ceremony at the Sydney Entertainment Centre and were due to perform: however, as a protest against a TV magazine's involvement, they refused to accept any trophy and finished the night with, \"My Turn to Cry\". After one verse and chorus, they smashed up the set and left the stage.", "title": "History" }, { "paragraph_id": 16, "text": "Swingshift debuted at No 1, which demonstrated their status as the highest selling local act. With a slightly different track-listing, East, was issued in the United States and they undertook their first US tour in mid-1981. Ahead of the tour they had issued, \"My Baby\", for the North America market and it reached the top 40 on Billboard's chart, Mainstream Rock. They were generally popular as a live act there, but the US branch of their label did little to promote the album. According to Barnes' biographer, Toby Creswell, at one point they were ushered into an office to listen to the US master tape to find it had substantial hiss and other ambient noise, which made it almost unable to be released. Notwithstanding, the album reached the lower region of the Billboard 200 in July. The group were booed off stage after a lacklustre performance in Dayton, Ohio in May 1981 opening for Ted Nugent. Other support slots they took were for Cheap Trick, Joe Walsh, Heart and the Marshall Tucker Band. European audiences were more accepting of the Australian band and they developed a fan base in Germany.", "title": "History" }, { "paragraph_id": 17, "text": "In August 1981 Cold Chisel began work on a fourth studio album, Circus Animals (March 1982), again with Opitz producing. To launch the album, the band performed under a circus tent at Wentworth Park in Sydney and toured heavily once more, including a show in Darwin that attracted more than 10 percent of the city's population. It peaked at No. 1 in both Australia and on the Official New Zealand Music Chart. In October 2010 it was listed at No. 4 in the book, 100 Best Australian Albums, by music journalists, Creswell, Craig Mathieson and John O'Donnell.", "title": "History" }, { "paragraph_id": 18, "text": "Its lead single, \"You Got Nothing I Want\" (November 1981), is an aggressive Barnes-penned hard rock track, which attacked the US industry for its handling of the band on their recent tour. The song caused problems for Barnes when he later attempted to break into the US market as a solo performer; senior music executives there continued to hold it against him. Like its predecessor, Circus Animals, contained songs of contrasting styles, with harder-edged tracks like \"Bow River\" and \"Hound Dog\" in place beside more expansive ballads such as the next two singles, \"Forever Now\" (March 1982) and \"When the War Is Over\" (August), both are written by Prestwich. \"Forever Now\" is their highest charting single in two Australasian markets: No. 4 on the Kent Music Report Singles Chart and No. 2 on the Official New Zealand Music Chart.", "title": "History" }, { "paragraph_id": 19, "text": "\"When the War Is Over\" is the most covered Cold Chisel track – Uriah Heep included a version on their 1989 album, Raging Silence; John Farnham recorded it while he and Prestwich were members of Little River Band in the mid-1980s and again for his 1990 solo album, Age of Reason. The song was also a No. 1 hit for former Australian Idol contestant, Cosima De Vito, in 2004 and was performed by Bobby Flynn during that show's 2006 season. \"Forever Now\" was covered, as a country waltz, by Australian band, the Reels.", "title": "History" }, { "paragraph_id": 20, "text": "Success outside Australasia continued to elude Cold Chisel and friction occurred between the members. According to McFarlane, \"[the] failed attempts to break into the American market represented a major blow... [their] earthy, high-energy rock was overlooked.\" In early 1983 they toured Germany but the shows went so badly that in the middle of the tour Walker up-ended his keyboard and stormed off stage during one show. After returning to Australia, Prestwich was fired and replaced by Ray Arnott, formerly of the 1970s progressive rockers, Spectrum, and country rockers, the Dingoes.", "title": "History" }, { "paragraph_id": 21, "text": "After this, Barnes requested a large advance from management. Now married with a young child, reckless spending had left him almost broke. His request was refused as there was a standing arrangement that any advance to one band member had to be paid to all the others. After a meeting on 17 August during which Barnes quit the band it was decided that the group would split up. A farewell concert series, The Last Stand, was planned and a final studio album, Twentieth Century (February 1984), was recorded. Prestwich returned for that tour, which began in October. Before the last four scheduled shows in Sydney, Barnes lost his voice and those dates were postponed to mid-December.", "title": "History" }, { "paragraph_id": 22, "text": "The band's final performances were at the Sydney Entertainment Centre from 12 to 15 December 1983 – ten years since their first live appearance as Cold Chisel in Adelaide – and the group then disbanded. The Sydney shows formed the basis of a concert film, The Last Stand (July 1984), which became the biggest-selling cinema-released concert documentary by an Australian band to that time. Other recordings from the tour were used on a live album, The Barking Spiders Live: 1983 (1984), the title is a reference to the pseudonym the group occasionally used when playing warm-up shows before tours. Some were also used as b-sides for a three-CD singles package, Three Big XXX Hits, issued ahead of the release of their 1994 compilation album, Teenage Love.", "title": "History" }, { "paragraph_id": 23, "text": "During breaks in the tour, Twentieth Century was recorded. It was a fragmentary process, spread across various studios and sessions as the individual members often refused to work together – both Arnott (on ten tracks) and Prestwich (on three tracks) are recorded as drummers. The album reached No. 1 and provided the singles \"Saturday Night\" (March 1984) and \"Flame Trees\" (August), both of which remain radio staples. \"Flame Trees\", co-written by Prestwich and Walker, took its title from the BBC series The Flame Trees of Thika, although it was lyrically inspired by Walker's hometown of Grafton. Barnes later recorded an acoustic version for his 1993 solo album, Flesh and Wood, and it was also covered by Sarah Blasko in 2006.", "title": "History" }, { "paragraph_id": 24, "text": "Barnes launched his solo career in January 1984, which has provided nine Australian number-one studio albums and an array of hit singles, including \"Too Much Ain't Enough Love\", which peaked at No. 1. He has recorded with INXS, Tina Turner, Joe Cocker and John Farnham to become one of the country's most popular male rock singers. Prestwich joined Little River Band in 1984 and appeared on the albums Playing to Win and No Reins, before departing in 1986 to join Farnham's touring band. Moss, Small and Walker took extended breaks from music.", "title": "History" }, { "paragraph_id": 25, "text": "Small maintained a low profile as a member in a variety of minor groups Pound, the Earls of Duke and the Outsiders. Walker formed Catfish in 1988, ostensibly a solo band with a variable membership, which included Moss, Charlie Owen and Dave Blight at times. Catfish's recordings during this phase attracted little commercial success. During 1988 and 1989 Walker wrote several tracks for Moss including the singles \"Tucker's Daughter\" (November 1988) and \"Telephone Booth\" (June 1989), which appeared on Moss' debut solo album, Matchbook (August 1989). Both the album and \"Tucker's Daughter\" peaked at No. 1. Moss won five trophies at the ARIA Music Awards of 1990. His other solo albums met with less chart or award success.", "title": "History" }, { "paragraph_id": 26, "text": "Throughout the 1980s and most of the 1990s, Cold Chisel were courted to re-form but refused, at one point reportedly turning down a $5 million offer to play a sole show in each of the major Australian state capitals. Moss and Walker often collaborated on projects; neither worked with Barnes until Walker wrote \"Stone Cold\" for the singer's sixth studio album, Heat (October 1993). The pair recorded an acoustic version for Flesh and Wood (December). Thanks primarily to continued radio airplay and Barnes' solo success, Cold Chisel's legacy remained solidly intact. By the early 1990s the group had surpassed 3 million album sales, most sold since 1983. The 1991 compilation album, Chisel, was re-issued and re-packaged several times, once with the long-deleted 1978 EP as a bonus disc and a second time in 2001 as a double album. The Last Stand soundtrack album was finally released in 1992. In 1994 a complete album of previously unreleased demo and rare live recordings, Teenage Love, was released, which provided three singles.", "title": "History" }, { "paragraph_id": 27, "text": "Cold Chisel reunited in October 1997, with the line-up of Barnes, Moss, Prestwich, Small and Walker. They recorded their sixth studio album, The Last Wave of Summer (October 1998), from February to July with the band members co-producing. They supported it with a national tour. The album debuted at No. 1 on the ARIA Albums Chart. In 2003 they re-grouped for the Ringside Tour and in 2005 again to perform at a benefit for the victims of the Boxing Day tsunami at the Myer Music Bowl in Melbourne. Founding bass guitarist, Les Kaczmarek, died of liver failure on 5 December 2008, aged 53. Walker described him as \"a wonderful and beguiling man in every respect.\"", "title": "History" }, { "paragraph_id": 28, "text": "On 10 September 2009 Cold Chisel announced they would reform for a one-off performance at the Sydney 500 V8 Supercars event on 5 December. The band performed at Stadium Australia to the largest crowd of its career, with more than 45,000 fans in attendance. They played a single live show in 2010: at the Deniliquin ute muster in October. In December Moss confirmed that Cold Chisel were working on new material for an album.", "title": "History" }, { "paragraph_id": 29, "text": "In January 2011 Steve Prestwich was diagnosed with a brain tumour; he underwent surgery on 14 January but never regained consciousness and died two days later, aged 56. All six of Cold Chisel's studio albums were re-released in digital and CD formats in mid-2011. Three digital-only albums were released – Never Before, Besides and Covered – as well as a new compilation album, The Best of Cold Chisel: All for You, which peaked at No. 2 on the ARIA Charts. The thirty-date Light the Nitro Tour was announced in July along with the news that former Divinyls and Catfish drummer, Charley Drayton, had replaced Prestwich. Most shows on the tour sold out within days and new dates were later announced for early 2012.", "title": "History" }, { "paragraph_id": 30, "text": "No Plans, their seventh studio album, was released in April 2012, with Kevin Shirley producing, which peaked at No. 2. The Australian's Stephen Fitzpatrick rated it as four-and-a-half out of five and found its lead track, \"All for You\", \"speaks of redemption; of a man's ability to make something of himself through love.\" The track \"I Got Things to Do\" was written and sung by Prestwich, which Fitzpatrick described as \"the bittersweet finale\", a song that had \"a vocal track the other band members did not know existed until after [Prestwich's] death.\" Midway through 2012 they embarked on a short UK tour and played with Soundgarden and Mars Volta at Hard Rock Calling at London's Hyde Park.", "title": "History" }, { "paragraph_id": 31, "text": "The group's eighth studio album, The Perfect Crime, appeared in October 2015, again with Shirley producing, which peaked at No. 2. Martin Boulton of The Sydney Morning Herald rated it at four out of five stars and explained that the album does what Cold Chisel always does: \"work incredibly hard, not take any shortcuts and play the hell out of the songs.\" The album, Boulton writes, \"delves further back to their rock'n'roll roots with chief songwriter [Walker] carving up the keys, guitarist [Moss] both gritty and sublime and the [Small/Drayton] engine room firing on every cylinder. Barnes' voice sounds worn, wonderful and better than ever.\"", "title": "History" }, { "paragraph_id": 32, "text": "The band's latest album, Blood Moon, was released in December 2019. The album debuted at No. 1 on the ARIA Album Chart, the band's fifth to reach the top. Half of the songs had lyrics written by Barnes and music by Walker, a new combination for Cold Chisel, with Barnes noting his increased confidence after writing two autobiographies.", "title": "History" }, { "paragraph_id": 33, "text": "McFarlane described Cold Chisel's early career in his Encyclopedia of Australian Rock and Pop (1999), \"after ten years on the road, [they] called it a day. Not that the band split up for want of success; by that stage [they] had built up a reputation previously uncharted in Australian rock history. By virtue of the profound effect the band's music had on the many thousands of fans who witnessed its awesome power, Cold Chisel remains one of Australia's best-loved groups. As one of the best live bands of its day, [they] fused a combination of rockabilly, hard rock and rough-house soul'n'blues that was defiantly Australian in outlook.\" The Canberra Times' Luis Feliu, in July 1978, observed how, \"This is not just another Australian rock band, no mediocrity here, and their honest, hard-working approach looks like paying off.\" While \"the range of styles tackled and done convincingly, from hard rock to blues, boogie, rhythm and blues, is where the appeal lies.\"", "title": "Musical style and lyrical themes" }, { "paragraph_id": 34, "text": "Influences from blues and early rock n' roll was broadly apparent, fostered by the love of those styles by Moss, Barnes and Walker. Small and Prestwich contributed strong pop sensibilities. This allowed volatile rock songs like \"You Got Nothing I Want\" and \"Merry-Go-Round\" to stand beside thoughtful ballads like \"Choirgirl\", pop-flavoured love songs like \"My Baby\" and caustic political statements like \"Star Hotel\", an attack on the late 1970s government of Malcolm Fraser, inspired by the Star Hotel riot in Newcastle.", "title": "Musical style and lyrical themes" }, { "paragraph_id": 35, "text": "The songs were not overtly political but rather observations of everyday life within Australian society and culture, in which the members with their various backgrounds (Moss was from Alice Springs, Walker grew up in rural New South Wales, Barnes and Prestwich were working-class immigrants from the UK) were quite well able to provide.", "title": "Musical style and lyrical themes" }, { "paragraph_id": 36, "text": "Cold Chisel's songs were about distinctly Australian experiences, a factor often cited as a major reason for the band's lack of international appeal. \"Saturday Night\" and \"Breakfast at Sweethearts\" were observations of the urban experience of Sydney's Kings Cross district where Walker lived for many years. \"Misfits\", which featured on the b-side to \"My Baby\", was about homeless kids in the suburbs surrounding Sydney. Songs like \"Shipping Steel\" and \"Standing on The Outside\" were working class anthems and many others featured characters trapped in mundane, everyday existences, yearning for the good times of the past (\"Flame Trees\") or for something better from life (\"Bow River\").", "title": "Musical style and lyrical themes" }, { "paragraph_id": 37, "text": "Alongside contemporaries like The Angels and Midnight Oil, Cold Chisel was renowned as one of the most dynamic live acts of their day and from early in their career concerts routinely became sell-out events. But the band was also famous for its wild lifestyle, particularly the hard-drinking Barnes, who played his role as one of the wild men of Australian rock to the hilt, never seen on stage without at least one bottle of vodka and often so drunk he could barely stand upright. Despite this, by 1982 he was a devoted family man who refused to tour without his wife and daughter. All the other band members were also settled or married; Ian Moss had a long-term relationship with the actress, Megan Williams, (she even sang on Twentieth Century) whose own public persona could have hardly been more different.", "title": "Reputation and recognition" }, { "paragraph_id": 38, "text": "It was the band's public image that often had them compared less favourably with other important acts like Midnight Oil, whose music and politics (while rather more overt) were often similar but whose image and reputation was more clean-cut. Cold Chisel remained hugely popular however and by the mid-1990s they continued to sell records at such a consistent rate they became the first Australian band to achieve higher sales after their split than during their active years.", "title": "Reputation and recognition" }, { "paragraph_id": 39, "text": "At the ARIA Music Awards of 1993 they were inducted into the Hall of Fame. While repackages and compilations accounted for much of these sales, 1994's Teenage Love provided two of its singles, which were top ten hits. When the group finally reformed in 1998 the resultant album was also a major hit and the follow-up tour sold out almost immediately. In 2001 Australasian Performing Right Association (APRA), listed their single, \"Khe Sanh\" (May 1978), at No. 8 of the all-time best Australian songs.", "title": "Reputation and recognition" }, { "paragraph_id": 40, "text": "Cold Chisel were one of the first Australian acts to have become the subject of a major tribute album. In 2007, Standing on the Outside: The Songs of Cold Chisel was released, featuring a collection of the band's songs as performed by artists including The Living End, Evermore, Something for Kate, Pete Murray, Katie Noonan, You Am I, Paul Kelly, Alex Lloyd, Thirsty Merc and Ben Lee, many of whom were children when Cold Chisel first disbanded and some, like the members of Evermore, had not even been born. Circus Animals was listed at No. 4 in the book, 100 Best Australian Albums (October 2010), while East appeared at No. 53. They won The Ted Albert Award for Outstanding Services to Australian Music at the APRA Music Awards of 2016.", "title": "Reputation and recognition" }, { "paragraph_id": 41, "text": "In March 2021, a previously unnamed lane off Burnett Street (off Currie Street) in the Adelaide central business district, near where the band had its first residency in the 1970s, was officially named Cold Chisel Lane. On one of its walls, there is a 50-metre (160 ft) mural by Adelaide artist James Dodd, inspired by the band.", "title": "Reputation and recognition" }, { "paragraph_id": 42, "text": "The APRA Awards are presented annually from 1982 by the Australasian Performing Right Association (APRA), \"honouring composers and songwriters\". They commenced in 1982.", "title": "Awards and nominations" }, { "paragraph_id": 43, "text": "The ARIA Music Awards is an annual awards ceremony that recognises excellence, innovation, and achievement across all genres of Australian music. They commenced in 1987. Cold Chisel was inducted into the Hall of Fame in 1993.", "title": "Awards and nominations" }, { "paragraph_id": 44, "text": "The Helpmann Awards is an awards show, celebrating live entertainment and performing arts in Australia, presented by industry group Live Performance Australia since 2001. Note: 2020 and 2021 were cancelled due to the COVID-19 pandemic.", "title": "Awards and nominations" }, { "paragraph_id": 45, "text": "The South Australian Music Awards are annual awards that exist to recognise, promote and celebrate excellence in the South Australian contemporary music industry. They commenced in 2012. The South Australian Music Hall of Fame celebrates the careers of successful music industry personalities.", "title": "Awards and nominations" }, { "paragraph_id": 46, "text": "Countdown was an Australian pop music TV series on national broadcaster ABC-TV from 1974–1987, it presented music awards from 1979–1987, initially in conjunction with magazine TV Week. The TV Week / Countdown Awards were a combination of popular-voted and peer-voted awards.", "title": "Awards and nominations" } ]	Cold Chisel are an Australian pub rock band, which formed in Adelaide in 1973 by mainstay members Ian Moss on guitar and vocals, Steve Prestwich on drums and Don Walker on piano and keyboards. They were soon joined by Jimmy Barnes on lead vocals and, in 1975, Phil Small became their bass guitarist. The group disbanded in late 1983 but subsequently reformed several times. Musicologist Ian McFarlane wrote that they became "one of Australia's best-loved groups" as well as "one of the best live bands", fusing "a combination of rockabilly, hard rock and rough-house soul'n'blues that was defiantly Australian in outlook." Eight of their studio albums have reached the Australian top five, Breakfast at Sweethearts, East, Circus Animals, Twentieth Century, The Last Wave of Summer, No Plans, The Perfect Crime and Blood Moon. Their top 10 singles are "Forever Now" (1982), "Hands Out of My Pocket" (1994) and "The Things I Love in You" (1998). At the ARIA Music Awards of 1993 they were inducted into the Hall of Fame. In 2001 Australasian Performing Right Association (APRA), listed their single, "Khe Sanh", at No. 8 of the all-time best Australian songs. Circus Animals was listed at No. 4 in the book, 100 Best Australian Albums, while East appeared at No. 53. They won The Ted Albert Award for Outstanding Services to Australian Music at the APRA Music Awards of 2016. Cold Chisel's popularity is almost entirely confined to Australia and New Zealand, with their songs and musicianship highlighting working class life. Their early bass guitarist (1973–75), Les Kaczmarek, died in December 2008; Steve Prestwich died of a brain tumour in January 2011.	2001-11-07T03:24:32Z	2023-12-16T00:44:47Z	[ "Template:Shortlisted", "Template:Cite web", "Template:Citation needed", "Template:Convert", "Template:Col-2", "Template:Yes2", "Template:Cite encyclopedia", "Template:Awards table", "Template:About", "Template:Col-end", "Template:Won", "Template:End", "Template:Portal", "Template:Reflist", "Template:Nom", "Template:Official website", "Template:Short description", "Template:Infobox musical artist", "Template:'", "Template:Col-begin", "Template:Abbr", "Template:Refbegin", "Template:Cold Chisel", "Template:Authority control", "Template:Use dmy dates", "Template:Use Australian English", "Template:Main", "Template:Refend", "Template:Cite magazine", "Template:Jimmy Barnes", "Template:Ian Moss" ]	https://en.wikipedia.org/wiki/Cold_Chisel

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