title: Black Snake Moan (film)

text: For the film, Jackson spent six or seven hours a day for half a year learning how to play the blues guitar for several songs he plays throughout the film. Ricci wore an actual chain during filming and ate only foods of no nutritional value to achieve a sickly appearance. She told "Entertainment Weekly" that she remained scantily clad even when the cameras were not rolling: "Sam [Jackson] would be like, 'Put some clothes on!' I was like, 'No, you don't understand. I'm doing something important.'"


title: Black Snake Moan (film)

text: Christina Ricci said the rough sex scenes were painful, partly because one of her fellow cast members, rap producer David Banner, had no previous acting experience. In one scene with Banner, Ricci said: "I was being hurt. It kind of felt like being raped. It was hard. I felt terrible, but it wasn't Dave's fault at all."


title: Black Snake Moan (film)

text: On Rotten Tomatoes, the film has a approval rating based on reviews, with an average score of . The website's critical consensus reads, "Uninhibited performances, skillful direction, and a killer blues soundtrack elevate "Black Snake Moan" beyond its outlandish premise." On Metacritic, the film has an average score of 52 out of 100, based on 34 critics, indicating "mixed or average reviews".


title: Black Snake Moan (film)

text: On the television program "Ebert & Roeper", filmmaker Kevin Smith, filling in for Roger Ebert, described the film as the best of the year thus far. Smith praised Ricci and Jackson, saying this was Ricci's best performance and Jackson's best performance since "Pulp Fiction" (1994). Richard Roeper also gave the film a "thumb up" rating. Matt Glasby of Film4, however, awarded the film only 1 star out of 5, calling it a "pressure-cooked mess" that was "bad enough to make gums bleed".


title: Black Snake Moan (film)

text: "Rolling Stone"s Peter Travers declared the film the year's Worst Soft-Core Sex on his list of the Worst Movies of 2007.


title: Black Snake Moan (film)

text: During its March 2–4, 2007 opening weekend in the US the film earned $4 million, putting it in eighth place behind films including other new releases "Wild Hogs" and "Zodiac".


title: Black Snake Moan (film)

text: In April 2008, Ricci commented on the promotional poster for the film, criticizing it as exploitative of women:


title: Black Snake Moan (film)

text: Black Snake Moan was released January 30, 2007 by New West Records featuring various artists including four tracks performed by Jackson himself. The 17 tracks cover classic to modern blues.


title: Black Snake Moan (film)

text: Glenn Gaslin at "Moving Pictures Magazine" briefly reviewed and praised the album: "It should make anyone who loves the blues, er, happy." Chad Grischow at IGN reviewed the album at length, concluding with, "The album does an excellent job at capturing the sweaty underbelly of the southern blues scene, and is a recommended listen, even if not for the reasons you originally picked it up."


title: Heinrich Harrer

text: Heinrich Harrer (; 6 July 1912 – 7 January 2006) was an Austrian mountaineer, sportsman, geographer, "Oberscharführer" in the "Schutzstaffel" (SS), and author. He was a member of the four-man climbing team that made the first ascent of the North Face of the Eiger, the "last problem" of the Alps. He wrote the books "Seven Years in Tibet" (1952) and "The White Spider" (1959).


title: Heinrich Harrer

text: Heinrich Harrer was born 6 July 1912 in Hüttenberg, Austria, in the district of Sankt Veit an der Glan in the state of Carinthia. His father, Josef Harrer, was a postal worker. From 1933 to 1938, Harrer studied geography and sports at the Karl-Franzens University in Graz. Harrer became a member of the traditional student corporation ATV Graz.


title: Heinrich Harrer

text: In 1935, Harrer was designated to participate in the Alpine skiing competition at the 1936 Winter Olympics in Garmisch-Partenkirchen. The Austrian Alpine skiing team, however, boycotted the event due to a conflict regarding the skiing instructors' status as professionals. As a result, Harrer did not participate.


title: Heinrich Harrer

text: Mountain climbing was Harrer's true passion. Knowing an extraordinary feat of climbing could win him a place on a Himalayan expedition, Harrer and a friend, Fritz Kasparek, resolved to be the first to climb the North Face of the Eiger (3,967 m, 13,025 ft) in Switzerland. The near vertical wall, with its ice-field known as The White Spider, had claimed several lives; and the Bernese authorities even banned climbing it. Following his final university exams in July 1938, Harrer and Kasparek traveled to Kleine Scheidegg at the foot of the Eiger and set out on their climb. Halfway up the mountain, Harrer and Kasparek encountered another team making the attempt, Ludwig Vörg and Anderl Heckmair from Germany. The four decided to make the rest of the climb as a single team, with the experienced Heckmair leading.


title: Heinrich Harrer

text: Throughout the climb, the four men were constantly threatened by snow avalanches and rock falls. They were caught in an avalanche as they climbed the White Spider on the upper face, but all possessed sufficient strength to resist being swept off the face. The members successfully reached the summit at four o'clock in the afternoon 24 July 1938. This first ascent of the Eiger North Face was described by Italian climber Reinhold Messner as "a glorious moment in the history of mountaineering and a great sensation, since several climbers had previously perished on the Face", made headlines around the world, and is recounted in Harrer's book "The White Spider", published in 1959.


title: Heinrich Harrer

text: In 1996, ORF editor and filmmaker Gerald Lehner found in American archives the membership card of Harrer, who joined the "Sturmabteilung" (SA) in October 1933. After the "Anschluss" of March 1938, as Germany annexed Austria, he joined the "Schutzstaffel" (SS) on 1 April. He held the rank of "Oberscharführer" (Sergeant), and on 1 May he became a member of the Nazi Party. After their ascent of the Eiger North Face, the four climbers were received by and photographed with Adolf Hitler. Harrer later said he wore his SS uniform only once, on the day of his marriage to Charlotte Wegener, daughter of the eminent explorer and scholar Alfred Wegener. After returning to Europe in 1952, Harrer was cleared of any pre-war crimes and this was later supported by Simon Wiesenthal. In his memoir, "Beyond Seven Years in Tibet", Harrer called his involvement with the Nazi Party a mistake made in his youth, when he had not yet learned to think for himself.


title: Heinrich Harrer

text: In 1939, Harrer joined a four-man expedition, led by Peter Aufschnaiter, to the Diamir Face of the Nanga Parbat with the aim of finding an easier route to the peak. Having concluded that the face was viable, the four mountaineers were in Karachi, India at the end of August, waiting for a freighter to take them home. The ship being long overdue, Harrer, Ludwig, and Hans Lobenhoffer tried to reach Persia (Iran), but several hundred kilometres north-west of Karachi they were arrested by British soldiers as enemy aliens and escorted back to Karachi, where Aufschnaiter had stayed. Two days later, war was declared, and on 3 September 1939 all were put behind barbed wire to be transferred to a detention camp at Ahmednagar near Bombay. They considered escaping to Portuguese Goa, but when further transferred to Dehradun to be detained there for years with 1,000 other enemy aliens, they found Tibet more promising, the final goal being the Japanese front in Burma or China.


title: Heinrich Harrer

text: Aufschnaiter and Harrer escaped and were re-captured a number of times before finally succeeding. On 29 April 1944, Harrer and six others, including Rolf Magener and Heins von Have (disguised as British officers), Aufschnaiter, the Salzburger Bruno Treipel (aka Treipl) and the Berliners Hans Kopp and Sattler (disguised as native Indian workers), walked out of the camp. Magener and von Have took the train to Calcutta and from there found their way to the Japanese army in Burma.


title: Heinrich Harrer

text: The others headed for the closest border via Landour. After Sattler gave up on 10 May, the remaining four entered Tibet on 17 May 1944, crossing the Tsang Chok-la Pass (5,896 m, 19,350 ft) and thereafter split into two groups: Harrer and Kopp, Aufschnaiter and Treipel. On 17 June, Treipel, exhausted, bought himself a horse and rode back to the lowlands. Several months later, when the remaining three were still without visas for Tibet, Kopp also gave up and left for Nepal (where he was handed over to the British authorities within a few days).


title: Heinrich Harrer

text: Aufschnaiter and Harrer, helped by the former's knowledge of the Tibetan language, proceeded to Tibet's capital city, Lhasa, which they reached on 15 January 1946 (six months after Nazi Germany's surrender), having crossed Western Tibet, the South-West with Gyirong County, and the Northern Changthang.


title: Heinrich Harrer

text: In 1948, Harrer became a salaried official of the Tibetan government, translating foreign news and acting as the Court photographer. Harrer first met the 14th Dalai Lama when he was summoned to the Potala Palace and asked to make a film about ice skating, which Harrer had introduced to Tibet. Harrer built a cinema for him, with a projector run off a Jeep engine. Harrer soon became the Dalai Lama's tutor in English, geography, and some science, and Harrer was astonished at how fast his pupil absorbed the Western world's knowledge. They shared the same birthday and a strong friendship developed between the two that would last the rest of Harrer's life.


title: Heinrich Harrer

text: In 1952, Harrer returned to Austria where he documented his experiences in the books "Seven Years in Tibet" (1952) and "Lost Lhasa" (1953). "Seven Years in Tibet" was translated into 53 languages, and was a bestseller in the United States in 1954, selling three million copies. The book was the basis of two films of the same title, the first in 1956 and the second in 1997, starring Brad Pitt in the role of Harrer.


title: Heinrich Harrer

text: Following his return from Tibet, Harrer settled down in Kitzbühel, Austria, and later in Liechtenstein. He took part in a number of ethnographic as well as mountaineering expeditions to Alaska, the Andes, and the Mountains of the Moon in central Africa. In 1953 he explored the source of the Amazon River and made a first ascent of Ausangate (6384 m). In 1954, some with German-American Fred Beckey, Harrer made the first ascents of Mount Deborah (3,761 m, 12,339 ft), Mount Hunter (4,442 m, 14,573 ft), and Mount Drum (3661 m), all in Alaska. In 1957, he explored the Congo River with the former king Leopold III of Belgium.


title: Heinrich Harrer

text: In February 1962, he was the leader of the team of four climbers who made the first ascent of the Carstensz Pyramid (4,884 m, 16,024 ft; later named Puncak Jaya) on Papua, Indonesia, the highest peak in Oceania and one of the Seven Summits. This and his pioneering expedition to reach the Neolithic stone axe quarries at Ya-Li-Me are recorded in his memoir "I Come from the Stone Age".


title: Heinrich Harrer

text: In 1966, he met the Xingu Indians of Brazil's Mato Grosso. In 1972, Harrer crossed the island of Borneo. He also made expeditions to Nepal, French Guiana, Greenland, Sudan, India, Ladakh, Andaman Islands, Uganda, Kenya and Bhutan.


title: Heinrich Harrer

text: Harrer wrote more than 20 books about his adventures, some including photographs considered to be among the best records of traditional Tibetan culture. Harrer was also an excellent golfer, winning Austrian national championships in 1958 and 1970.


title: Heinrich Harrer

text: In December 1938, Harrer married Lotte Wegener (1920–1989), the daughter of Alfred Wegener, German polar researcher and originator of the theory of continental drift. Her father had died on a Greenland expedition when she was 10. Their son Peter Harrer was born in December 1939, three months after Harrer had been interned by British forces in India. Their marriage was dissolved in 1943 while he was still in India. In 1953, he married Margaretha Truxa (divorce in 1958), and in 1962 he married Katharina (Carina) Haarhaus (1922–2014), who remained his wife until his death.


title: Heinrich Harrer

text: In the early 1980s, he visited Tibet again, and wrote a sequel to "Seven Years in Tibet", titled "Return to Tibet: Tibet After the Chinese Occupation". The Kirkus Review of his sequel said" He later wrote his autobiography published in English as "Beyond Seven Years in Tibet" in 2007. He made approximately 40 documentary films and founded the in Hüttenberg, Austria dedicated to Tibet. In October 2002, the Dalai Lama presented Harrer with the International Campaign for Tibet's Light of Truth Award for his efforts to bring the situation in Tibet to international attention. Harrer died on 7 January 2006 in Friesach, Austria at the age of 93.


title: Colonization of Mars

text: Colonization or settlement of Mars is the theoretical human migration and long-term human establishment of Mars. The prospect has garnered interest from public space agencies and private corporations and has been extensively explored in science fiction writing, film, and art.


title: Colonization of Mars

text: Organizations have proposed plans for a human mission to Mars, the first step towards any colonization effort, but no person has set foot on the planet, and there have been no return missions. However, landers and rovers have successfully explored the planetary surface and delivered information about conditions on the ground.


title: Colonization of Mars

text: Mars' orbit is close to Earth's orbit and the asteroid belt. While Mars' day and general composition are similar to Earth, the planet is hostile to life. Mars has an unbreathable atmosphere, thin enough that its temperature on average fluctuates between , yet thick enough to cause planet-wide dust storms. The barren landscape on Mars is covered by fine dust and intense ionizing radiation. Mars has in-situ resources, such as underground water, Martian soil, and ore, which could be leveraged by colonists. Opportunities to generate electricity via wind, solar, and nuclear power using resources on Mars are poor.


title: Colonization of Mars

text: Justifications and motivations for colonizing Mars include curiosity, the potential for humans to provide more in-depth observational research than uncrewed rovers, an economic interest in its resources, and the possibility that the settlement of other planets could decrease the likelihood of human extinction. Difficulties and hazards include radiation exposure during a trip to Mars and on its surface, toxic soil, low gravity, the isolation that accompanies Mars' distance from Earth, a lack of water, and cold temperatures.


title: Colonization of Mars

text: Commitments to researching permanent settlement have been made by public space agencies—NASA, ESA, Roscosmos, ISRO, the CNSA, among others—and private organizations—SpaceX, Lockheed Martin, and Boeing.


title: Colonization of Mars

text: Since the 20th century, there have been several proposed human missions to Mars both by government agencies and private companies.


title: Colonization of Mars

text: Most of the human mission concepts as currently conceived by national governmental space programs would not be direct precursors to colonization. Programs such as those being tentatively planned by NASA, Roscosmos, and ESA are intended solely as exploration missions, with the establishment of a permanent base possible but not yet the main goal.


title: Colonization of Mars

text: Colonization requires the establishment of permanent habitats that have the potential for self-expansion and self-sustenance. Two early proposals for building habitats on Mars are the Mars Direct and the Semi-Direct concepts, advocated by Robert Zubrin, an advocate of the colonization of Mars.


title: Colonization of Mars

text: At the February 2017 World Government Summit, the United Arab Emirates announced a plan to establish a settlement on Mars by 2117, led by the Mohammed bin Rashid Space Centre.


title: Colonization of Mars

text: SpaceX has proposed the development of Mars transportation infrastructure in order to facilitate the eventual colonization of Mars. The mission architecture includes fully reusable launch vehicles, human-rated spacecraft, on-orbit propellant tankers, rapid-turnaround launch/landing mounts, and local production of rocket fuel on Mars via in situ resource utilization (ISRU). SpaceX's aspirational goal was to land their cargo Starships on Mars by 2024 and the first 2 crewed starships by 2026.


title: Colonization of Mars

text: The surface gravity of Mars is just 38% that of Earth. Although microgravity is known to cause health problems such as muscle loss and bone demineralization, it is not known if Martian gravity would have a similar effect. The Mars Gravity Biosatellite was a proposed project designed to learn more about what effect Mars' lower surface gravity would have on humans, but it was cancelled due to a lack of funding.


title: Colonization of Mars

text: Mars has a surface area that is 28.4% of Earth's, which is only slightly less than the amount of dry land on Earth (which is 29.2% of Earth's surface). Mars has half the radius of Earth and only one-tenth the mass. This means that it has a smaller volume (≈15%) and lower average density than Earth.


title: Colonization of Mars

text: Due to the lack of a magnetosphere, solar particle events and cosmic rays can easily reach the Martian surface.


title: Colonization of Mars

text: Atmospheric pressure on Mars is far below the Armstrong limit at which people can survive without pressure suits. Since terraforming cannot be expected as a near-term solution, habitable structures on Mars would need to be constructed with pressure vessels similar to spacecraft, capable of containing a pressure between 30 and 100 kPa. The atmosphere is also toxic as most of it consists of carbon dioxide (95% carbon dioxide, 3% nitrogen, 1.6% argon, and traces totaling less than 0.4% of other gases, including oxygen).


title: Colonization of Mars

text: This thin atmosphere does not filter out ultraviolet sunlight, which causes instability in the molecular bonds between atoms. For example, ammonia (NH) is not stable in the Martian atmosphere and breaks down after a few hours.


title: Colonization of Mars

text: Also due to the thinness of the atmosphere, the temperature difference between day and night is much larger than on Earth, typically around 70 °C (125 °F). However, the day/night temperature variation is much lower during dust storms when very little light gets through to the surface even during the day, and instead warms the middle atmosphere.


title: Colonization of Mars

text: Water on Mars is scarce, with rovers "Spirit" and "Opportunity" finding less than there is in Earth's driest desert.


title: Colonization of Mars

text: The climate is much colder than Earth, with mean surface temperatures between (depending on the season and latitude). The lowest temperature ever recorded on Earth was 184 K (−89.2 °C, −128.6 °F) in Antarctica.


title: Colonization of Mars

text: Because Mars is about 52% farther from the Sun, the amount of solar energy entering its upper atmosphere per unit area (the solar constant) is only around 43.3% of what reaches the Earth's upper atmosphere. However, due to the much thinner atmosphere, a higher fraction of the solar energy reaches the surface as radiation. The maximum solar irradiance on Mars is about 590 W/m compared to about 1000 W/m at the Earth's surface; optimal conditions on the Martian equator can be compared to those on Devon Island in the Canadian Arctic in June. Mars' orbit is more eccentric than Earth's, increasing temperature and solar constant variations over the course of the Martian year. Mars has no rain and virtually no clouds, so although cold, it is permanently sunny (apart from during dust storms). This means solar panels can always operate at maximum efficiency on dust-free days.


title: Colonization of Mars

text: Global dust storms are common throughout the year and can cover the entire planet for weeks, blocking sunlight from reaching the surface. This has been observed to cause temperature drops of 4 °C (7 °F) for several months after the storm. In contrast, the only comparable events on Earth are infrequent large volcanic eruptions such as the Krakatoa event which threw large amounts of ash into the atmosphere in 1883, causing a global temperature drop of around 1 °C (2 °F).


title: Colonization of Mars

text: These dust storms would affect electricity production from solar panels for long periods, and interfere with communications with Earth.


title: Colonization of Mars

text: Mars has an axial tilt of 25.19°, similar to Earth's 23.44°. As a result, Mars has seasons much like Earth, though on average they last nearly twice as long because the Martian year is about 1.88 Earth years. Mars' temperature regime is more similar to Earth's than all other planets‘ in the solar system. While generally colder than Earth, Mars can have Earth-like temperatures in some areas and at certain times.


title: Colonization of Mars

text: The Martian soil is toxic due to relatively high concentrations of chlorine and associated compounds, such as perchlorates, which are hazardous to all known forms of life, even though some halotolerant microorganisms might be able to cope with enhanced perchlorate concentrations by drawing on physiological adaptations similar to those observed in the yeast "Debaryomyces hansenii" exposed in lab experiments to increasing NaClO concentrations.


title: Colonization of Mars

text: Plants and animals cannot survive the ambient conditions on the surface of Mars. However, some extremophile organisms that survive in hostile conditions on Earth have endured periods of exposure to environments that approximate some of the conditions found on Mars.


title: Colonization of Mars

text: The Martian day (or sol) is very close in duration to Earth's. A solar day on Mars is 24 hours, 39 minutes and 35.244 seconds.


title: Colonization of Mars

text: Conditions on the surface of Mars are closer to the conditions on Earth in terms of temperature and sunlight than on any other planet or moon, except for the cloud tops of Venus. However, the surface is not hospitable to humans or most known life forms due to the radiation, greatly reduced air pressure, and an atmosphere with only 0.16% oxygen.


title: Colonization of Mars

text: In 2012, it was reported that some lichen and cyanobacteria survived and showed remarkable adaptation capacity for photosynthesis after 34 days in simulated Martian conditions in the Mars Simulation Laboratory (MSL) maintained by the German Aerospace Center (DLR). Some scientists think that cyanobacteria could play a role in the development of self-sustainable crewed outposts on Mars. They propose that cyanobacteria could be used directly for various applications, including the production of food, fuel and oxygen, but also indirectly: products from their culture could support the growth of other organisms, opening the way to a wide range of life-support biological processes based on Martian resources.


title: Colonization of Mars

text: Humans have explored parts of Earth that match some conditions on Mars. Based on NASA rover data, temperatures on Mars (at low latitudes) are similar to those in Antarctica. The atmospheric pressure at the highest altitudes reached by piloted balloon ascents (35 km (114,000 feet) in 1961, 38 km in 2012) is similar to that on the surface of Mars. However, the pilots were not exposed to the extremely low pressure, as it would have killed them, but seated in a pressurized capsule.


title: Colonization of Mars

text: Human survival on Mars would require living in artificial Mars habitats with complex life-support systems. One key aspect of this would be water processing systems. Being made mainly of water, a human being would die in a matter of days without it. Even a 5–8% decrease in total body water causes fatigue and dizziness and a 10% decrease physical and mental impairment (See Dehydration). A person in the UK uses 70–140 litres of water per day on average. Through experience and training, astronauts on the ISS have shown it is possible to use far less, and that around 70% of what is used can be recycled using the ISS water recovery systems. (For instance, half of all water is used during showers.) Similar systems would be needed on Mars but would need to be much more efficient, since regular robotic deliveries of water to Mars would be prohibitively expensive (the ISS is supplied with water four times per year). Potential access to on-site water (frozen or otherwise) via drilling has been investigated by NASA.


title: Colonization of Mars

text: Mars presents a hostile environment for human habitation. Different technologies have been developed to assist long-term space exploration and may be adapted for habitation on Mars. The existing record for the longest consecutive space flight is 438 days by cosmonaut Valeri Polyakov, and the most accrued time in space is 878 days by Gennady Padalka. The longest time spent outside the protection of the Earth's Van Allen radiation belt is about 12 days for the Apollo 17 moon landing. This is minor in comparison to the 1100-day journey to Mars and back envisioned by NASA for possibly as early as the year 2028. Scientists have also hypothesized that many different biological functions can be negatively affected by the environment of Mars colonies. Due to higher levels of radiation, there are a multitude of physical side-effects that must be mitigated. In addition, Martian soil contains high levels of toxins which are hazardous to human health.


title: Colonization of Mars

text: The difference in gravity may negatively affect human health by weakening bones and muscles. There is also risk of osteoporosis and cardiovascular problems. Current rotations on the International Space Station put astronauts in zero gravity for six months, a comparable length of time to a one-way trip to Mars. This gives researchers the ability to better understand the physical state that astronauts going to Mars would arrive in. Once on Mars, surface gravity is only 38% of that on Earth. Microgravity affects the cardiovascular, musculoskeletal and neurovestibular (central nervous) systems. The cardiovascular effects are complex. On Earth, blood within the body stays 70% below the heart, but in microgravity this is not the case due to nothing pulling the blood down. This can have several negative effects. Once entering into microgravity, the blood pressure in the lower body and legs is significantly reduced. This causes legs to become weak through loss of muscle and bone mass. Astronauts show signs of a puffy face and chicken legs syndrome. After the first day of reentry back to earth, blood samples showed a 17% loss of blood plasma, which contributed to a decline of erythropoietin secretion. On the skeletal system which is important to support our body's posture, long space flight and exposure to microgravity cause demineralization and atrophy of muscles. During re-acclimation, astronauts were observed to have a myriad of symptoms including cold sweats, nausea, vomiting and motion sickness. Returning astronauts also felt disoriented. Journeys to and from Mars being six months is the average time spent at the ISS. Once on Mars with its lesser surface gravity (38% percent of Earth's), these health effects would be a serious concern. Upon return to Earth, recovery from bone loss and atrophy is a long process and the effects of microgravity may never fully reverse.


title: Colonization of Mars

text: Dangerous amounts of radiation reach Mars' surface despite it being much further from the Sun compared to Earth. Mars has lost its inner dynamo giving it a weaker global magnetosphere than Earth does. Combined with a thin atmosphere, this permits a significant amount of ionizing radiation to reach the Martian surface.


title: Colonization of Mars

text: There are two main types of radiation risks to traveling outside the protection of Earth's atmosphere and magnetosphere: galactic cosmic rays (GCR) and solar energetic particles (SEP). Earth's magnetosphere protects from charged particles from the Sun, and the atmosphere protects against uncharged and highly energetic GCRs. There are ways to mitigate solar radiation, but without much of an atmosphere, the only solution to the GCR flux is heavy shielding amounting to roughly 15 centimeters of steel, 1 meter of rock, or 3 meters of water, limiting human colonists to living underground most of the time.


title: Colonization of Mars

text: The Mars Odyssey spacecraft carries an instrument, the Mars Radiation Environment Experiment (MARIE), to measure the radiation. MARIE found that radiation levels in orbit above Mars are 2.5 times higher than at the International Space Station. The average daily dose was about —equivalent to 0.08 Gy per year. A three-year exposure to such levels would exceed the safety limits currently adopted by NASA, and the risk of developing cancer due to radiation exposure after a Mars mission could be two times greater than what scientists previously thought. Occasional solar proton events (SPEs) produce much higher doses, as observed in September 2017, when NASA reported radiation levels on the surface of Mars were temporarily doubled, and were associated with an aurora 25-times brighter than any observed earlier, due to a massive, and unexpected, solar storm. Building living quarters underground (possibly in Martian lava tubes) would significantly lower the colonists' exposure to radiation.


title: Colonization of Mars

text: Much remains to be learned about space radiation. In 2003, NASA's Lyndon B. Johnson Space Center opened a facility, the NASA Space Radiation Laboratory, at Brookhaven National Laboratory, that employs particle accelerators to simulate space radiation. The facility studies its effects on living organisms, as well as experimenting with shielding techniques. Initially, there was some evidence that this kind of low level, chronic radiation is not quite as dangerous as once thought; and that radiation hormesis occurs. However, results from a 2006 study indicated that protons from cosmic radiation may cause twice as much serious damage to DNA as previously estimated, exposing astronauts to greater risk of cancer and other diseases. As a result of the higher radiation in the Martian environment, the summary report of the Review of U.S. Human Space Flight Plans Committee released in 2009 reported that "Mars is not an easy place to visit with existing technology and without a substantial investment of resources." NASA is exploring a variety of alternative techniques and technologies such as deflector shields of plasma to protect astronauts and spacecraft from radiation.


title: Colonization of Mars

text: Due to the communication delays, new protocols need to be developed in order to assess crew members' psychological health. Researchers have developed a Martian simulation called HI-SEAS (Hawaii Space Exploration Analog and Simulation) that places scientists in a simulated Martian laboratory to study the psychological effects of isolation, repetitive tasks, and living in close-quarters with other scientists for up to a year at a time. Computer programs are being developed to assist crews with personal and interpersonal issues in absence of direct communication with professionals on Earth. Current suggestions for Mars exploration and colonization are to select individuals who have passed psychological screenings. Psychosocial sessions for the return home are also suggested in order to reorient people to society.


title: Colonization of Mars

text: Various works of fiction put forward the idea of terraforming Mars to allow a wide variety of life forms, including humans, to survive unaided on Mars' surface. Some ideas of possible technologies that may be able to contribute to the terraforming of Mars have been conjectured, but none would be able to bring the entire planet into the Earth-like habitat pictured in science fiction.


title: Colonization of Mars

text: To be self-sustaining, a colony would have to be large enough to provide all the necessary living services. These include


title: Colonization of Mars

text: As the number of individuals grows, both activities and objects can be shared between them. Growth also will offset the risks of collapse of the society, caused by sudden deaths, accidents, infertility or inbreeding. But this may not prevent mortal combat between different groups of individuals, or the loss of efficiency due to inappropriate social organization.


title: Colonization of Mars

text: By mathematical modelling of the time spent by people on these issues and by keeping things simple, Salotti concludes that the minimum number for a colony on Mars is 110. This is close to other studies of the genetic problems involved in the longer journey to Proxima Centauri b (6,000+ years).


title: Colonization of Mars

text: Mars requires less energy per unit mass (delta V) to reach from Earth than any planet except Venus. Using a Hohmann transfer orbit, a trip to Mars requires approximately nine months in space. Modified transfer trajectories that cut the travel time down to four to seven months in space are possible with incrementally higher amounts of energy and fuel compared to a Hohmann transfer orbit, and are in standard use for robotic Mars missions. Shortening the travel time below about six months requires higher delta-v and an increasing amount of fuel, and is difficult with chemical rockets. It could be feasible with advanced spacecraft propulsion technologies, some of which have already been tested to varying levels, such as Variable Specific Impulse Magnetoplasma Rocket, and nuclear rockets. In the former case, a trip time of forty days could be attainable, and in the latter, a trip time down to about two weeks. In 2016, a University of California, Santa Barbara scientist said they could further reduce travel time for a small robotic probe to Mars down to "as little as 72 hours" with the use of a laser propelled sail (directed photonic propulsion) system instead of the fuel-based rocket propulsion system.


title: Colonization of Mars

text: During the journey the astronauts would be subject to radiation, which would require a means to protect them. Cosmic radiation and solar wind cause DNA damage, which increases the risk of cancer significantly. The effect of long-term travel in interplanetary space is unknown, but scientists estimate an "added" risk of between 1% and 19% (one estimate is 3.4%) for males to die of cancer because of the radiation during the journey to Mars and back to Earth. For females the probability is higher due to generally larger glandular tissues.


title: Colonization of Mars

text: Mars has a surface gravity 0.38 times that of Earth, and the density of its atmosphere is about 0.6% of that on Earth. The relatively strong gravity and the presence of aerodynamic effects make it difficult to land heavy, crewed spacecraft with thrusters only, as was done with the Apollo Moon landings, yet the atmosphere is too thin for aerodynamic effects to be of much help in aerobraking and landing a large vehicle. Landing piloted missions on Mars would require braking and landing systems different from anything used to land crewed spacecraft on the Moon or robotic missions on Mars.


title: Colonization of Mars

text: If one assumes carbon nanotube construction material will be available with a strength of then a space elevator could be built to land people and material on Mars.


title: Colonization of Mars

text: Phobos is Synchronously orbiting Mars, where the same face stays facing the planet at ~6,028 km above the Martian surface. A space elevator could extend down from Phobos to Mars 6,000 km, about 28 kilometers from the surface, and just out of the atmosphere of Mars. A similar space elevator cable could extend out 6,000 km the opposite direction that would counterbalance Phobos. In total the space elevator would extend out over 12,000 km which would be below Areostationary orbit of Mars (17,032 km). A rocket launch would still be needed to get the rocket and cargo to the beginning of the space elevator 28 km above the surface. The surface of Mars is rotating at 0.25 km/s at the equator and the bottom of the space elevator would be rotating around Mars at 0.77 km/s, so only 0.52 km/s of Delta-v would be needed to get to the space elevator. Phobos orbits at 2.15 km/s and the outer most part of the space elevator would rotate around Mars at 3.52 km/s.


title: Colonization of Mars

text: Colonization of Mars would require a wide variety of equipment—both equipment to directly provide services to humans and production equipment used to produce food, propellant, water, energy and breathable oxygen—in order to support human colonization efforts. Required equipment will include:


title: Colonization of Mars

text: In order to function at all the colony would need the basic utilities to support human civilization. These would need to be designed to handle the harsh Martian environment and would either have to be serviceable while wearing an EVA suit or housed inside a human habitable environment. For example, if electricity generation systems rely on solar power, large energy storage facilities will also be needed to cover the periods when dust storms block out the sun, and automatic dust removal systems may be needed to avoid human exposure to conditions on the surface. If the colony is to scale beyond a few people, systems will also need to maximise use of local resources to reduce the need for resupply from Earth, for example by recycling water and oxygen and being adapted to be able to use any water found on Mars, whatever form it is in.


title: Colonization of Mars

text: Communications with Earth are relatively straightforward during the half-sol when Earth is above the Martian horizon. NASA and ESA included communications relay equipment in several of the Mars orbiters, so Mars already has communications satellites. While these will eventually wear out, additional orbiters with communication relay capability are likely to be launched before any colonization expeditions are mounted.


title: Colonization of Mars

text: The one-way communication delay due to the speed of light ranges from about 3 minutes at closest approach (approximated by perihelion of Mars minus aphelion of Earth) to 22 minutes at the largest possible superior conjunction (approximated by aphelion of Mars plus aphelion of Earth). Real-time communication, such as telephone conversations or Internet Relay Chat, between Earth and Mars would be highly impractical due to the long time lags involved. NASA has found that direct communication can be blocked for about two weeks every synodic period, around the time of superior conjunction when the Sun is directly between Mars and Earth, although the actual duration of the communications blackout varies from mission to mission depending on various factors—such as the amount of link margin designed into the communications system, and the minimum data rate that is acceptable from a mission standpoint. In reality most missions at Mars have had communications blackout periods of the order of a month.


title: Colonization of Mars

text: A satellite at the or Earth–Sun Lagrangian point could serve as a relay during this period to solve the problem; even a constellation of communications satellites would be a minor expense in the context of a full colonization program. However, the size and power of the equipment needed for these distances make the L4 and L5 locations unrealistic for relay stations, and the inherent stability of these regions, although beneficial in terms of station-keeping, also attracts dust and asteroids, which could pose a risk. Despite that concern, the STEREO probes passed through the L4 and L5 regions without damage in late 2009.


title: Colonization of Mars

text: Recent work by the University of Strathclyde's Advanced Space Concepts Laboratory, in collaboration with the European Space Agency, has suggested an alternative relay architecture based on highly non-Keplerian orbits. These are a special kind of orbit produced when continuous low-thrust propulsion, such as that produced from an ion engine or solar sail, modifies the natural trajectory of a spacecraft. Such an orbit would enable continuous communications during solar conjunction by allowing a relay spacecraft to "hover" above Mars, out of the orbital plane of the two planets. Such a relay avoids the problems of satellites stationed at either L4 or L5 by being significantly closer to the surface of Mars while still maintaining continuous communication between the two planets.


title: Colonization of Mars

text: The path to a human colony could be prepared by robotic systems such as the Mars Exploration Rovers "Spirit", "Opportunity", "Curiosity" and "Perseverance". These systems could help locate resources, such as ground water or ice, that would help a colony grow and thrive. The lifetimes of these systems would be years and even decades, and as recent developments in commercial spaceflight have shown, it may be that these systems will involve private as well as government ownership. These robotic systems also have a reduced cost compared with early crewed operations, and have less political risk.


title: Colonization of Mars

text: Wired systems might lay the groundwork for early crewed landings and bases, by producing various consumables including fuel, oxidizers, water, and construction materials. Establishing power, communications, shelter, heating, and manufacturing basics can begin with robotic systems, if only as a prelude to crewed operations.


title: Colonization of Mars

text: Mars Surveyor 2001 Lander MIP (Mars ISPP Precursor) was to demonstrate manufacture of oxygen from the atmosphere of Mars, and test solar cell technologies and methods of mitigating the effect of Martian dust on the power systems.


title: Colonization of Mars

text: Before any people are transported to Mars on the notional 2020s Mars transportation infrastructure envisioned by SpaceX, a number of robotic cargo missions would be undertaken first in order to transport the requisite equipment, habitats and supplies.


title: Colonization of Mars

text: Equipment that would be necessary would include "machines to produce fertilizer, methane and oxygen from Mars' atmospheric nitrogen and carbon dioxide and the planet's subsurface water ice" as well as construction materials to build transparent domes for initial agricultural areas.


title: Colonization of Mars

text: As with early colonies in the New World, economics would be a crucial aspect to a colony's success. The reduced gravity well of Mars and its position in the Solar System may facilitate Mars–Earth trade and may provide an economic rationale for continued settlement of the planet. Given its size and resources, this might eventually be a place to grow food and produce equipment to mine the asteroid belt.


title: Colonization of Mars

text: Some early Mars colonies might specialize in developing local resources for Martian consumption, such as water and/or ice. Local resources can also be used in infrastructure construction. One source of Martian ore currently known to be available is metallic iron in the form of nickel–iron meteorites. Iron in this form is more easily extracted than from the iron oxides that cover the planet.


title: Colonization of Mars

text: Another main inter-Martian trade good during early colonization could be manure. Assuming that life doesn't exist on Mars, the soil is going to be very poor for growing plants, so manure and other fertilizers will be valued highly in any Martian civilization until the planet changes enough chemically to support growing vegetation on its own.


title: Colonization of Mars

text: Solar power is a candidate for power for a Martian colony. Solar insolation (the amount of solar radiation that reaches Mars) is about 42% of that on Earth, since Mars is about 52% farther from the Sun and insolation falls off as the square of distance. But the thin atmosphere would allow almost all of that energy to reach the surface as compared to Earth, where the atmosphere absorbs roughly a quarter of the solar radiation. Sunlight on the surface of Mars would be much like a moderately cloudy day on Earth.


title: Colonization of Mars

text: Space colonization on Mars can roughly be said to be possible when the necessary methods of space colonization become cheap enough (such as space access by cheaper launch systems) to meet the cumulative funds that have been gathered for the purpose.


title: Colonization of Mars

text: Although there are no immediate prospects for the large amounts of money required for any space colonization to be available given traditional launch costs, there is some prospect of a radical reduction to launch costs in the 2020s, which would consequently lessen the cost of any efforts in that direction. With a published price of per launch of up to payload to low Earth orbit or to Mars, SpaceX Falcon 9 rockets are already the "cheapest in the industry". SpaceX's reusable plans include Falcon Heavy and future methane-based launch vehicles including the Starship. If SpaceX is successful in developing the reusable technology, it would be expected to "have a major impact on the cost of access to space", and change the increasingly competitive market in space launch services.


title: Colonization of Mars

text: Alternative funding approaches might include the creation of inducement prizes. For example, the 2004 President's Commission on Implementation of United States Space Exploration Policy suggested that an inducement prize contest should be established, perhaps by government, for the achievement of space colonization. One example provided was offering a prize to the first organization to place humans on the Moon and sustain them for a fixed period before they return to Earth.


title: Colonization of Mars

text: Since Mars is much closer to the asteroid belt than Earth is, it would take less Delta-v to get to the Asteroid belt and return minerals to Mars. One hypothesis is that the origin of the Moons of Mars (Phobos and Deimos) are actually Asteroid captures from the Asteroid belt. 16 Psyche in the main belt could have over $10,000 Quadrillion Dollars worth of minerals. NASA is planning a mission for October 10, 2023 for the Psyche orbiter to launch and get to the asteroid by August 2029 to study. 511 Davida could have $27 quadrillion Dollars worth of minerals and resources. Using the moon Phobos to launch spacecraft is energetically favorable and a useful location from which to dispatch missions to main belt asteroids. Mining the asteroid belt from Mars and its moons could help in the colonization of Mars.


title: Colonization of Mars

text: Caves would naturally provide a degree of insulation from Martian hazards for humans on the planet. These hazards include radiation, impactor events, and the wide range in temperatures on the surface.


title: Colonization of Mars

text: Mars Odyssey found what appear to be natural caves near the volcano Arsia Mons. It has been speculated that settlers could benefit from the shelter that these or similar structures could provide from radiation and micrometeoroids. Geothermal energy is also suspected in the equatorial regions.


title: Colonization of Mars

text: A team of researchers which presented at Geological Society of America Connects 2022 identified some 139 caves worth exploring as potential shelters. Each was within 60 miles of a location ideal for use as a landing site and had been imaged in high-resolution by HiRISE.


title: Colonization of Mars

text: Several possible Martian lava tube skylights have been located on the flanks of Arsia Mons. Earth based examples indicate that some should have lengthy passages offering complete protection from radiation and be relatively easy to seal using on-site materials, especially in small subsections.


title: Colonization of Mars

text: Hellas Planitia is the lowest lying plain below the Martian geodetic datum. The atmospheric pressure is relatively higher in this place when compared to the rest of Mars.


title: Colonization of Mars

text: Robotic spacecraft to Mars are required to be sterilized, to have at most 300,000 spores on the exterior of the craft—and more thoroughly sterilized if they contact "special regions" containing water, otherwise there is a risk of contaminating not only the life-detection experiments but possibly the planet itself.


title: Colonization of Mars

text: It is impossible to sterilize human missions to this level, as humans are host to typically a hundred trillion microorganisms of thousands of species of the human microbiome, and these cannot be removed while preserving the life of the human. Containment seems the only option, but it is a major challenge in the event of a hard landing (i.e. crash). There have been several planetary workshops on this issue, but with no final guidelines for a way forward yet. Human explorers would also be vulnerable to back contamination to Earth if they become carriers of microorganisms should Mars have life.


title: Colonization of Mars

text: It is unforeseen how the first human landing on Mars will change the current policies regarding the exploration of space and occupancy of celestial bodies. In the 1967 United Nations Outer Space Treaty, it was determined that no country may take claim to space or its inhabitants. Since the planet Mars offers a challenging environment and dangerous obstacles for humans to overcome, the laws and culture on the planet will most likely be very different from those on Earth. With Elon Musk announcing his plans for travel to Mars, it is uncertain how the dynamic of a private company possibly being the first to put a human on Mars will play out on a national and global scale. NASA had to deal with several cuts in funding. During the presidency of Barack Obama, the objective for NASA to reach Mars was pushed to the background. In 2017, president Donald Trump promised to return humans to the Moon and eventually Mars, effectively taking action by increasing NASA budget with $1.1 billion, and mostly focus on the development of the new Space Launch System.


title: Colonization of Mars

text: Space colonization in general has been discussed as continuation of imperialism and colonialism, especially regarding Mars colonial decision making and reasons for colonial labor and land exploitation have been questioned with postcolonial critique. Seeing the need for inclusive and democratic participation and implementation of any space and Mars exploration, infrastructure, or colonialization, many have called for dramatic sociological reforms and guarantees to prevent racism, sexism, and other forms of prejudice.


title: Colonization of Mars

text: The narrative of space exploration as a "New Frontier" has been criticized as unreflected continuation of settler colonialism and manifest destiny, continuing the narrative of colonial exploration as fundamental to the assumed human nature.


title: Colonization of Mars

text: The predominant perspective of territorial colonization in space has been called "surfacism", especially comparing advocacy for colonization of Mars opposed to Venus.


title: Colonization of Mars

text: One possible ethical challenge that space travelers might face is that of pregnancy during the trip. According to NASA's policies, it is forbidden for members of the crew to engage in sex in space. NASA wants its crew members to treat each other like coworkers would in a professional environment. A pregnant member on a spacecraft is dangerous to all those aboard. The pregnant woman and child would need additional nutrition from the rations aboard, as well as special treatment and care. The pregnancy would impinge on the pregnant crew member's duties and abilities. It is still not fully known how the environment in a spacecraft would affect the development of a child aboard. It is known however that a fetus would be more susceptible to solar radiation in space, which would likely have a negative effect on its cells and genetics. During a long trip to Mars, it is likely that members of craft may engage in sex due to their stressful and isolated environment.


title: Colonization of Mars

text: Mars colonization is advocated by several non-governmental groups for a range of reasons and with varied proposals. One of the oldest groups is the Mars Society who promote a NASA program to accomplish human exploration of Mars and have set up Mars analog research stations in Canada and the United States. Mars to Stay advocates recycling emergency return vehicles into permanent settlements as soon as initial explorers determine permanent habitation is possible.


title: Colonization of Mars

text: Elon Musk founded SpaceX with the long-term goal of developing the technologies that will enable a self-sustaining human colony on Mars. Richard Branson, in his lifetime, is "determined to be a part of starting a population on Mars. I think it is absolutely realistic. It will happen... I think over the next 20 years," [from 2012] "we will take literally hundreds of thousands of people to space and that will give us the financial resources to do even bigger things".


title: Colonization of Mars

text: Author Robert Zubrin has been a major advocate for Mars exploration and colonization for many years. He is a member of the Mars society and has authored several fiction and nonfiction books about the subject. In 1996 he wrote "The Case for Mars: The Plan to Settle the Red Planet and Why We Must." He continues to advocate for Mars and space exploration with his most recent book being "."


title: Colonization of Mars

text: In June 2013, Buzz Aldrin, American engineer and former astronaut, and the second person to walk on the Moon, wrote an opinion, published in "The New York Times", supporting a human mission to Mars and viewing the Moon "not as a destination but more a point of departure, one that places humankind on a trajectory to homestead Mars and become a two-planet species". In August 2015, Aldrin, in association with the Florida Institute of Technology, presented a "master plan", for NASA consideration, for astronauts, with a "tour of duty of ten years", to colonize Mars before the year 2040.


title: Midtown Manhattan

text: Midtown Manhattan is the central portion of the New York City borough of Manhattan and serves as the city's primary central business district. Midtown is home to some of the city's most prominent buildings, including the Empire State Building, the Chrysler Building, the Hudson Yards Redevelopment Project, the headquarters of the United Nations, Grand Central Terminal, and Rockefeller Center, as well as tourist destinations such as Broadway, Times Square, and Koreatown. Penn Station in Midtown Manhattan is the busiest transportation hub in the Western Hemisphere.


title: Midtown Manhattan

text: Midtown Manhattan is the largest central business district in the world and ranks among the most expensive locations for real estate; Fifth Avenue in Midtown Manhattan commands the world's highest retail rents, with average annual rents at US in 2017. However, due to the high price of retail spaces in Midtown, there are also many vacant storefronts in the neighborhood. Midtown is the country's largest commercial, entertainment, and media center, and also a growing financial center.


title: Midtown Manhattan

text: The majority of New York City's skyscrapers, including its tallest hotels and apartment towers, are in Midtown. The area hosts commuters and residents working in its offices, hotels, and retail establishments, tourists and students. Times Square, the brightly illuminated hub of the Broadway Theater District, is a major center of the world's entertainment industry. Sixth Avenue also has the headquarters of three of the four major U.S. television networks.


title: Midtown Manhattan

text: Midtown is part of Manhattan Community District 5. It is patrolled by the 14th and 18th precincts of the New York City Police Department.


title: Midtown Manhattan

text: Geographically, the northern boundary of Midtown Manhattan is commonly defined to be 59th Street; its southern boundary is less clear, and variously taken to be 34th Street, 23rd Street, or even 14th Street. Midtown spans the entire island of Manhattan along an east–west axis, bounded by the East River on its east and the Hudson River to its west. "The Encyclopedia of New York City" defines Midtown as extending from 34th Street to 59th Street and from 3rd Avenue to 8th Avenue.


title: Midtown Manhattan

text: In addition to its central business district, Midtown Manhattan encompasses many neighborhoods, including Hell's Kitchen and Chelsea on the West Side, and Murray Hill, Kips Bay, Turtle Bay, and Gramercy Park on the East Side. It is sometimes broken into "Midtown East" and "Midtown West", or north and south as in the New York City Police Department's "Midtown North" and "Midtown South" precincts.


title: Midtown Manhattan

text: Midtown is the original district in the United States to bear the name and included historical but now defunct neighborhoods such as the Ladies' Mile, along Fifth Avenue from 14th to 23rd Street; and the Tenderloin, from 23rd to 42nd Street and from Fifth Avenue to Seventh Avenue.


title: Midtown Manhattan

text: The border of Midtown Manhattan is nebulous and further confused by the fact that the term "Midtown Manhattan" can be used to refer either to a district or a group of neighborhoods and districts in Manhattan:


title: Midtown Manhattan

text: Midtown Manhattan is the world's largest central business district, with 400 million square feet (37.2 million m) of office space in 2018. Midtown contains the headquarters of major companies, including 4Kids Entertainment (formerly), Barnes & Noble, Bloomberg L.P., Ernst & Young, Calvin Klein, Cantor Fitzgerald, CBS Corporation, Citigroup, Colgate-Palmolive, Cushman & Wakefield, DC Comics, Deloitte, Duane Reade, Estée Lauder Companies, Foot Locker, Frederator Studios, JPMorgan Chase, Hess Corporation, Kroll Inc., L-3 Communications, Marsh & McLennan Companies, Marvel Entertainment, MetLife, MidOcean Partners, Morgan Stanley, Nasdaq, Inc., NBC Universal, The New York Times Company, NexCen Brands, Paramount Global, Pfizer, Polo Ralph Lauren, Saks Incorporated (Saks Fifth Avenue), The Sharper Image, Simon & Schuster, Six Flags, TBWA Worldwide, Telemundo, Thomson Reuters, Time Warner, Time Warner Cable, The Travelers Companies, and Univision Communications. The New York Institute of Finance is located in Midtown Manhattan.


title: Midtown Manhattan

text: Haier operates its United States offices in the Haier Building at 1356 Broadway, formerly the headquarters of the Greenwich Savings Bank. Haier held the opening ceremony on March 4, 2002. Sumitomo Corporation operates its New York Office, the headquarters of the corporation's United States operations, at 600 Third Avenue, 10016 in the Murray Hill neighborhood. El Al's North American headquarters are in Midtown. The Air France USA regional headquarters are in 125 West 55th Street in Midtown Manhattan. Hachette Book Group USA has its headquarters in 237 Park Avenue. In 1994 Alitalia considered moving its USA headquarters from Midtown to Lower Manhattan, but decided to keep the offices where they were at the last minute. Global Infrastructure Partners has an office in Midtown Manhattan.


title: Midtown Manhattan

text: Silicon Alley, the common metonym for New York City's high tech sector, is based in Midtown South, specifically the Flatiron District. Prominent Silicon Alley companies in Midtown include AppNexus, Blue Apron, Gilt, Betterment, Oscar, SoFi, Rent the Runway, Warby Parker, and WeWork. The technology sector has been expanding across Midtown Manhattan since 2010. The biotechnology sector is also growing in Midtown Manhattan based upon the city's strength in academic scientific research and public and commercial financial support. By mid-2014, Accelerator, a biotech investment firm, had raised more than US$30 million from investors, including Eli Lilly and Company, Pfizer, and Johnson & Johnson, for initial funding to create biotechnology startups at the Alexandria Center for Life Science, which encompasses more than on East 29th Street and promotes collaboration among scientists and entrepreneurs at the center and with nearby academic, medical, and research institutions.


title: Midtown Manhattan

text: The New York City Economic Development Corporation's Early Stage Life Sciences Funding Initiative and venture capital partners, including Celgene, General Electric Ventures, and Eli Lilly, committed a minimum of US$100 million to help launch 15 to 20 ventures in life sciences and biotechnology.


title: Midtown Manhattan

text: Real estate is a major force in Midtown Manhattan's economy, and indeed the city's, as the total value of all New York City property was estimated at US$914.8 billion for the 2015 fiscal year. Manhattan has perennially been home to some of the nation's, as well as the world's, most marketable real estate, including the Time Warner Center, which had the highest-listed market value in the city in 2006 at US$1.1 billion, to be subsequently surpassed in October 2014 by the Waldorf Astoria New York, which became the most expensive hotel ever sold after being purchased by the Anbang Insurance Group, based in China, for . When 450 Park Avenue was sold on July 2, 2007, for US$510 million, about US$1,589 per square foot (US$17,104/m), it broke the barely month-old record for an American office building of US$1,476 per square foot (US$15,887/m) based on the sale of 660 Madison Avenue. In 2014, Manhattan was home to six of the top ten zip codes in the United States by median housing price. In 2019, the most expensive home sale ever in the United States achieved completion in Midtown Manhattan, at a selling price of US$238 million, for a penthouse apartment overlooking Central Park.


title: Midtown Manhattan

text: According to The Broadway League, shows on Broadway sold approximately US$1.27 billion worth of tickets in the 2013–2014 season, an increase of 11.4% from US$1.139 billion in the 2012–2013 season; attendance in 2013-2014 stood at 12.21 million, a 5.5% increase from the 2012–2013 season's 11.57 million.


title: Midtown Manhattan

text: Companies that used to have their headquarters in Midtown Manhattan include American Airlines, American Comics Group, American Overseas Airlines, Central Park Media, Eastern Air Lines, GoodTimes Entertainment, LJN, NewKidCo, Pan American World Airways, Philip Morris Companies (now Altria Group), Trans Caribbean Airways, and Trans World Airlines. In 1997, Aer Lingus announced that it was moving its North American headquarters from Midtown to Melville, New York, in Suffolk County on Long Island.


title: Midtown Manhattan

text: Based on data from the 2010 United States Census, the population of Midtown Manhattan was 28,630, a change of 2,823 (9.9%) from the 25,807 counted in 2000. Covering an area of , the neighborhood had a population density of . The racial makeup of the neighborhood was 64.1% (18,351) White, 4.6% (1,310) African American, 0.1% (34) Native American, 20.8% (5,942) Asian, 0% (8) Pacific Islander, 0.3% (92) from other races, and 2% (569) from two or more races. Hispanic or Latino of any race were 8.1% (2,324) of the population.


title: Midtown Manhattan

text: The entirety of Community District 5, which comprises Midtown Manhattan, had 53,120 inhabitants as of NYC Health's 2018 Community Health Profile, with an average life expectancy of 84.8 years. This is higher than the median life expectancy of 81.2 for all New York City neighborhoods. Most inhabitants are adults: a plurality (45%) are between the ages of 25 and 44, while 22% are between 45 and 64, and 13% are 65 or older. The ratio of youth and college-aged residents was lower, at 7% and 12% respectively.


title: Midtown Manhattan

text: As of 2017, the median household income in Community Districts 4 and 5 (including Chelsea and Hell's Kitchen) was $101,981, though the median income in Midtown individually was $120,854. In 2018, an estimated 11% of Midtown Manhattan residents lived in poverty, compared to 14% in all of Manhattan and 20% in all of New York City. One in twenty residents (5%) were unemployed, compared to 7% in Manhattan and 9% in New York City. Rent burden, or the percentage of residents who have difficulty paying their rent, is 41% in Midtown Manhattan, compared to the boroughwide and citywide rates of 45% and 51% respectively. Based on this calculation, , Midtown Manhattan is considered to be high-income relative to the rest of the city and not gentrifying.


title: Midtown Manhattan

text: Midtown Manhattan is patrolled by two precincts of the NYPD. Midtown North is patrolled by the 18th Precinct, located at 306 West 54th Street, while Midtown South is patrolled by the 14th Precinct, located at 357 West 35th Street. The precincts ranked 69th safest out of 69 patrol areas for per-capita crime in 2010. The high per-capita crime rate can be attributed to the low population of the area, as well as the high number of crimes committed against tourists. , with a non-fatal assault rate of 25 per 100,000 people, Midtown Manhattan's rate of violent crimes per capita is less than that of the city as a whole. The incarceration rate of 297 per 100,000 people is lower than that of the city as a whole.


title: Midtown Manhattan

text: The 18th Precinct has a lower crime rate than in the 1990s, with crimes across all categories having decreased by 84.2% between 1990 and 2018. The precinct reported 3 murders, 21 rapes, 130 robberies, 190 felony assaults, 175 burglaries, 1,875 grand larcenies, and 31 grand larcenies auto in 2018. The 14th Precinct also has a lower crime rate than in the 1990s, with crimes across all categories having decreased by 88.6% between 1990 and 2018. The precinct reported 0 murders, 19 rapes, 150 robberies, 199 felony assaults, 210 burglaries, 2,005 grand larcenies, and 23 grand larcenies auto in 2018.


title: Midtown Manhattan

text: The main part of midtown Manhattan, between 34th and 59th Streets from Lexington Avenue to Eighth Avenue, is served by five fire stations of the New York City Fire Department (FDNY):


title: Midtown Manhattan

text: The greater Midtown area between 14th Street and 59th Street contains seven additional fire stations.


title: Midtown Manhattan

text: , preterm births and births to teenage mothers in Midtown Manhattan are lower than the city average. In Midtown Manhattan, there were 67 preterm births per 1,000 live births (compared to 87 per 1,000 citywide), and 4 births to teenage mothers per 1,000 live births (compared to 19.3 per 1,000 citywide). Midtown Manhattan has a low population of residents who are uninsured. In 2018, this population of uninsured residents was estimated to be 11%, slightly less than the citywide rate of 12%.


title: Midtown Manhattan

text: The concentration of fine particulate matter, the deadliest type of air pollutant, in Midtown Manhattan is , more than the city average. Eleven percent of Midtown Manhattan residents are smokers, which is less than the city average of 14% of residents being smokers. In Midtown Manhattan, 10% of residents are obese, 5% are diabetic, and 18% have high blood pressure—compared to the citywide averages of 24%, 11%, and 28% respectively. In addition, 9% of children are obese, compared to the citywide average of 20%.


title: Midtown Manhattan

text: Ninety-one percent of residents eat some fruits and vegetables every day, which is higher than the city's average of 87%. In 2018, 86% of residents described their health as "good," "very good," or "excellent," more than the city's average of 78%. For every supermarket in Midtown Manhattan, there are 11 bodegas.


title: Midtown Manhattan

text: The nearest major hospitals are Mount Sinai West in Hell's Kitchen; Beth Israel Medical Center in Stuyvesant Town; the Bellevue Hospital Center and NYU Langone Medical Center in Kips Bay; and NewYork–Presbyterian Hospital in the Upper East Side.


title: Midtown Manhattan

text: Midtown Manhattan is located within six primary ZIP Codes. West of Fifth Avenue, Midtown is located in 10018 between 34th and 41st Streets, 10036 between 41st and 48th Streets, and 10019 between 48th and 59th Streets. East of Fifth Avenue, Midtown is located in 10016 between 34th and 40th Streets, 10017 between 40th and 49th Streets, and 10022 between 49th and 59th Streets. The area southwest of Fifth Avenue and 34th Street, sometimes considered to be in Midtown, is part of 10001. Other areas between 14th and 34th Streets are covered by ZIP Codes 10003, 10009, 10010, and 10011, though these are generally not considered to be part of Midtown proper. There are also thirty-three ZIP Codes assigned to individual buildings or building complexes.


title: Midtown Manhattan

text: In addition, the James A. Farley Station, the city's main post office, is located at 421 8th Avenue. The post office stopped 24-hour service in 2009 due to decreasing mail traffic.


title: Midtown Manhattan

text: Midtown Manhattan generally has a higher rate of college-educated residents than the rest of the city . A majority of residents age 25 and older (78%) have a college education or higher, while 6% have less than a high school education and 17% are high school graduates or have some college education. By contrast, 64% of Manhattan residents and 43% of city residents have a college education or higher. The percentage of Midtown Manhattan students excelling in math rose from 61% in 2000 to 80% in 2011 and reading achievement increased from 66% to 68% during the same time period.


title: Midtown Manhattan

text: Midtown Manhattan's rate of elementary school student absenteeism is lower than the rest of New York City. In Midtown Manhattan, 19% of elementary school students missed twenty or more days per school year, less than the citywide average of 20%. Additionally, 92% of high school students in Midtown Manhattan graduate on time, more than the citywide average of 75%.


title: Midtown Manhattan

text: The New York City Department of Education operates the following public high schools in Midtown, serving grades 9-12:


title: Midtown Manhattan

text: Private schools include The Beekman School, Rebecca School, and a number of private languages and music centers (e.g. Berlitz, American Language Communication Center, New York Language Center, Swan Music School, and the New York Youth Symphony). The La Scuola d'Italia Guglielmo Marconi Italian international school moved to West Midtown in 2016.


title: Midtown Manhattan

text: The New York Public Library (NYPL) operates the Stephen A. Schwarzman Building (also the Main Branch), a reference branch at 476 Fifth Avenue. The four-story building, constructed in 1911, is known worldwide for its architecture and has several million items in its collections.


title: Midtown Manhattan

text: Two campuses of the City University of New York (CUNY)—the doctorate-granting CUNY Graduate Center and the Stella and Charles Guttman Community College—are located in Midtown, while Baruch College, also of the City University of New York, is located in Midtown South. Mercy College is situated at Herald Square.


title: Midtown Manhattan

text: Pennsylvania Station and Grand Central Terminal are the two major railroad stations located in Midtown Manhattan. Penn Station serves Amtrak, NJ Transit, and the Long Island Rail Road (LIRR), while Grand Central serves the Metro-North Railroad and will serve the LIRR in the future. Penn Station is considered to be the busiest transportation hub in the Western Hemisphere, servicing around 650,000 people per day.


title: Midtown Manhattan

text: The Port Authority Bus Terminal is located at Eighth Avenue and 41st Street at the western edge of Midtown. The terminal is the largest in the United States and busiest in the world by volume of traffic, serving more than 65 million people per year.


title: Midtown Manhattan

text: The New York City Subway and MTA Regional Bus Operations each operate several routes that go through Midtown. Additionally, the PATH train to New Jersey terminates at 33rd Street and Sixth Avenue in Midtown.


title: Midtown Manhattan

text: Traffic congestion is common, especially for crosstown traffic. In 2011, a new system of traffic light control, known as "Midtown in Motion" was announced, with the aim of reducing traffic congestion. Approximately 750,000 vehicles enter Midtown Manhattan on a fall business day. According to the 2011 Traffic Data Report for New York State, 777,527 vehicles a day went through select toll facilities into Manhattan.


title: Midtown Manhattan

text: The New York Supreme Court, Appellate Division, First Department, is located in the Rose Hill section of Midtown Manhattan. The Puerto Rico Federal Affairs Administration operates its New York office on the 22nd floor at 135 West 50th Street.


title: Midtown Manhattan

text: Several countries, including Argentina, The Bahamas, China, Costa Rica, Germany, Ireland, Israel, Jamaica, Japan, Luxembourg, Mexico, Morocco, Saudi Arabia, Singapore, South Africa, South Korea, United Kingdom, and Ukraine, have Permanent Missions accredited to the United Nations, and consulates-general accredited to the United States, in Midtown Manhattan. In addition, the Taipei Economic and Cultural Office of the Republic of China (Taiwan) is in Midtown Manhattan.


title: Agenda 21

text: Agenda 21 is a non-binding action plan of the United Nations with regard to sustainable development. It is a product of the Earth Summit (UN Conference on Environment and Development) held in Rio de Janeiro, Brazil, in 1992. It is an action agenda for the UN, other multilateral organizations, and individual governments around the world that can be executed at local, national, and global levels. One major objective of the Agenda 21 initiative is that every local government should draw its own local Agenda 21. Its aim initially was to achieve global sustainable development by 2000, with the "21" in Agenda 21 referring to the original target of the 21st century.


title: Agenda 21

text: The full text of Agenda 21 was made public at the UN Conference on Environment and Development (Earth Summit), held in Rio de Janeiro on 13 June 1992, where 178 governments voted to adopt the program. The final text was the result of drafting, consultation, and negotiation, beginning in 1989 and culminating at the two-week conference.


title: Agenda 21

text: In 1997, the UN General Assembly held a special session to appraise the status of Agenda 21 (Rio +5). The Assembly recognized progress as "uneven" and identified key trends, including increasing globalization, widening inequalities in income, and continued deterioration of the global environment. A new General Assembly Resolution (S-19/2) promised further action.


title: Agenda 21

text: The Johannesburg Plan of Implementation, agreed to at the World Summit on Sustainable Development (Earth Summit 2002), affirmed UN commitment to "full implementation" of Agenda 21, alongside achievement of the Millennium Development Goals and other international agreements.


title: Agenda 21

text: The first World Public Meeting on Culture, held in Porto Alegre, Brazil, in 2002, came up with the idea to establish guidelines for local cultural policies, something comparable to what Agenda 21 was for the environment. They are to be included in various subsections of Agenda 21 and will be carried out through a wide range of sub-programs beginning with G8 countries.


title: Agenda 21

text: In 2012, at the United Nations Conference on Sustainable Development the attending members reaffirmed their commitment to Agenda 21 in their outcome document called "The Future We Want". Leaders from 180 nations participated.


title: Agenda 21

text: Agenda 2030, also known as the Sustainable Development Goals, was a set of goals decided upon at the UN Sustainable Development Summit in 2015. It takes all of the goals set by Agenda 21 and re-asserts them as the basis for sustainable development, saying, "We reaffirm all the principles of the Rio Declaration on Environment and Development…" Adding onto those goals from the original Rio document, a total of 17 goals have been agreed on, revolving around the same concepts of Agenda 21; people, planet, prosperity, peace, and partnership.


title: Agenda 21

text: The Commission on Sustainable Development acts as a high-level forum on sustainable development and has acted as preparatory committee for summits and sessions on the implementation of Agenda 21. The UN Division for Sustainable Development acts as the secretariat to the Commission and works "within the context of" Agenda 21.


title: Agenda 21

text: The implementation of Agenda 21 was intended to involve action at international, national, regional and local levels. Some national and state governments have legislated or advised that local authorities take steps to implement the plan locally, as recommended in Chapter 28 of the document. These programs are often known as "Local Agenda 21" or "LA21". For example, in the Philippines, the plan is "Philippines Agenda 21" (PA21). The group, ICLEI-Local Governments for Sustainability, formed in 1990; today its members come from over 1,000 cities, towns, and counties in 88 countries and is widely regarded as a paragon of Agenda 21 implementation.


title: Agenda 21

text: Europe turned out to be the continent where LA21 was best accepted and most implemented. In Sweden, for example, four small- to medium-sized municipalities in the south-east of Sweden were chosen for a 5-year study of their Local Agenda 21 (LA21) processes a Local Agenda 21 initiative.


title: Agenda 21

text: The UN Department of Economic and Social Affairs' Division for Sustainable Development monitors and evaluates progress, nation by nation, towards the adoption of Agenda 21, and makes these reports available to the public on its website.


title: Agenda 21

text: The Rio+10 report identified over 6400 local governments in 113 countries worldwide that were engaged in Local Agenda 21 (LA21) activities, a more than three-fold increase over less than five years. 80% = 5120 of these local governments, were located in Europe. A significant increase has been noted in the number of countries in which one or more LA21 processes were underway.


title: Agenda 21

text: Australia is a signatory to Agenda 21 and 88 of its municipalities subscribe to ICLEI, an organization that promotes Agenda 21 globally. Australia's membership is second only to that of the United States.


title: Agenda 21

text: In Africa, national support for Agenda 21 is strong and most countries are signatories. But support is often closely tied to environmental challenges specific to each country; for example, in 2002 Sam Nujoma, who was then President of Namibia, spoke about the importance of adhering to Agenda 21 at the 2002 Earth Summit, noting that as a semi-arid country, Namibia sets a lot of store in the United Nations Convention to Combat Desertification (UNCCD). Furthermore, there is little mention of Agenda 21 at the local level in indigenous media. Only major municipalities in sub-Saharan African countries are members of ICLEI. Agenda 21 participation in North African countries mirrors that of Middle Eastern countries, with most countries being signatories but little to no adoption on the local-government level. Countries in sub-Saharan Africa and North Africa generally have poorly documented Agenda 21 status reports. By contrast, South Africa's participation in Agenda 21 mirrors that of modern Europe, with 21 city members of ICLEI and support of Agenda 21 by national-level government.


title: Agenda 21

text: The national focal point in the United States is the Division Chief for Sustainable Development and Multilateral Affairs, Office of Environmental Policy, Bureau of Oceans and International Environmental and Scientific Affairs, U.S. Department of State. A June 2012 poll of 1,300 United States voters by the American Planning Association found that 9% supported Agenda 21, 6% opposed it, and 85% thought they didn't have enough information to form an opinion.


title: Agenda 21

text: The United States is a signatory country to Agenda 21, but because Agenda 21 is a legally non-binding statement of intent and not a treaty, the United States Senate did not hold a formal debate or vote on it. It is therefore not considered to be law under Article Six of the United States Constitution. President George H. W. Bush was one of the 178 heads of government who signed the final text of the agreement at the Earth Summit in 1992, and in the same year Representatives Nancy Pelosi, Eliot Engel and William Broomfield spoke in support of United States House of Representatives Concurrent Resolution 353, supporting implementation of Agenda 21 in the United States. Created by Executive Order 12852 in 1993, the President's Council on Sustainable Development (PCSD) is explicitly charged with recommending a national action plan for sustainable development to the President. The PCSD is composed of leaders from government and industry, as well as from environmental, labor and civil rights organizations. The PCSD submitted its report, "Sustainable America: A New Consensus", to the President in early 1996. In the absence of a multi-sectoral consensus on how to achieve sustainable development in the United States, the PCSD was conceived to formulate recommendations for the implementation of Agenda 21. Executive Order 12852 was revoked by Executive Order 13138 in 1999. The PCSD set 10 common goals to support the Agenda 21 movement:


title: Agenda 21

text: In the United States, over 528 cities are members of ICLEI, an international sustainability organization that helps to implement the Agenda 21 and Local Agenda 21 concepts across the world. The United States has nearly half of the ICLEI's global membership of 1,200 cities promoting sustainable development at a local level. The United States also has one of the most comprehensively documented Agenda 21 status reports. In response to the opposition, Don Knapp, U.S. spokesman for the ICLEI, has said "Sustainable development is not a top-down conspiracy from the U.N., but a bottom-up push from local governments".


title: Agenda 21

text: Agenda 21 fears have played a role in opposition to local government's efforts to promote resource and land conservation, build bike lanes, and construct hubs for public transportation. The non-profit group ICLEI – Local Governments for Sustainability USA – was targeted by anti-Agenda 21 activists. In the same year, fears of Agenda 21 "went mainstream" when the Republican National Committee adopted a platform resolution stated that "We strongly reject the U.N. Agenda 21 as erosive of American sovereignty."


title: Agenda 21

text: Several state and local governments have considered or passed motions and legislation opposing Agenda 21. Most such bills failed, "either dying in committee, getting defeated on the statehouse floor or – in the case of Missouri's 2013 bill – getting vetoed by the governor." In Texas, for example, broadly worded legislation that would prohibit any governmental entity from accepting from or granting money to any "nongovernmental or intergovernmental organization accredited by the United Nations to implement a policy that originated in the Agenda 21 plan" was defeated because it could have cut off funding for groups such as 4-H, the Boy Scouts of America, and the Texas Wildlife Association. In Arizona, a similarly sweeping bill was introduced in the Arizona State Legislature seeking to mandate that the state could not "adopt or implement the creed, doctrine, or principles or any tenet" of Agenda 21 and to prohibit the state "implementing programs of, expending any sum of money for, being a member of, receiving funding from, contracting services from, or giving financial or other forms of aid to" an array of sustainability organizations. The bill, which was opposed by the state chamber of commerce and the mayor of Phoenix, was defeated in 2012. Alabama was one state that did adopt an anti-Agenda 21 resolution, unanimously passing in 2012 a measure to block "any future effort to 'deliberately or inadvertently infringe or restrict private property rights without due process, as may be required by policy recommendations originating in, or traceable to 'Agenda 21.'"


title: Agenda 21

text: The right-wing John Birch Society described Agenda 21 as a plot, disguised as an environmental movement, to end individual freedom and establish a one-world government. Activists believed that the non-binding UN resolution was "the linchpin in a plot to subjugate humanity under an eco-totalitarian regime." The conspiracy had its roots in anti-environmentalist ideology and opposition to land-use regulation.


title: Agenda 21

text: Anti-Agenda 21 theories have circulated in the U.S. Some Tea Party movement activists and others promoted the notion that Agenda 21 was part of a UN plot to deny property rights, undermine U.S. sovereignty, or force citizens to move to cities.


title: Agenda 21

text: Conspiracy theorist Glenn Beck warned that Agenda 21 was a "seditious" conspiracy to cut the world population by 85%. He claimed it represents a move towards "government control on a global level" and the creation of a "police state" that would lead to "totalitarianism." Beck described the dystopia it would cause if the world followed the UN plan in a 2012 novel he co-authored called "Agenda 21".


title: Agenda 21

text: The Rio+10 report identified 5120 of local governments in Europe having a "Local Agenda 21". As most Europeans live in about 800 cities of +50.000 inhabitants, it is fair to say that just about all EU cities, communes and villages have a local Agenda 21.


title: Agenda 21

text: By 1997, 70% of UK local authorities had committed to Agenda 21. Many, such as the London Borough of Enfield, employed Agenda 21 officers to promote the programme.


title: Agenda 21

text: France, whose national government, along with 14 cities, is a signatory, promotes nationwide programs in support of the goals of Agenda 21.


title: Satyendra Nath Bose

text: Satyendra Nath Bose (; 1 January 1894 – 4 February 1974) was a Bengali mathematician and physicist specializing in theoretical physics. He is best known for his work on quantum mechanics in the early 1920s, in developing the foundation for Bose statistics and the theory of the Bose condensate. A Fellow of the Royal Society, he was awarded India's second highest civilian award, the Padma Vibhushan, in 1954 by the Government of India.


title: Satyendra Nath Bose

text: A polymath, he had a wide range of interests in varied fields, including physics, mathematics, chemistry, biology, mineralogy, philosophy, arts, literature, and music. He served on many research and development committees in sovereign India.


title: Satyendra Nath Bose

text: Bose was born in Calcutta (now Kolkata), the eldest of seven children in a Bengali Kayastha family. He was the only son, with six sisters after him. His ancestral home was in the village Bara Jagulia, in the district of Nadia, in the Bengal Presidency. His schooling began at the age of five, near his home. When his family moved to Goabagan, he was admitted into the New Indian School. In the final year of school, he was admitted into the Hindu School. He passed his entrance examination (matriculation) in 1909 and stood fifth in the order of merit. He next joined the intermediate science course at the Presidency College, Calcutta, where his teachers included Jagadish Chandra Bose, Sarada Prasanna Das, and Prafulla Chandra Ray.


title: Satyendra Nath Bose

text: Bose received a Bachelor of Science in mixed mathematics from Presidency College, standing first in 1913. Then he joined Sir Ashutosh Mukherjee's newly formed Science College where he again stood first in the MSc mixed mathematics exam in 1915. His marks in the MSc examination created a new record in the annals of the University of Calcutta, which is yet to be surpassed.


title: Satyendra Nath Bose

text: After completing his MSc, Bose joined the Science college, Calcutta University as a research scholar in 1916 and started his studies in the theory of relativity. It was an exciting era in the history of scientific progress. Quantum theory had just appeared on the horizon and important results had started pouring in.


title: Satyendra Nath Bose

text: His father, Surendranath Bose, worked in the Engineering Department of the East Indian Railway Company. In 1914, at age 20, Satyendra Nath Bose married Ushabati Ghosh, the 11-year-old daughter of a prominent Calcutta physician. They had nine children, two of whom died in early childhood. When he died in 1974, he left behind his wife, two sons, and five daughters.


title: Satyendra Nath Bose

text: As a polyglot, Bose was well versed in several languages such as Bengali, English, French, German and Sanskrit as well as the poetry of Lord Tennyson, Rabindranath Tagore and Kalidasa. He could play the "esraj", an Indian musical instrument similar to a violin. He was actively involved in running night schools that came to be known as the Working Men's Institute.


title: Satyendra Nath Bose

text: Bose attended Hindu School in Calcutta, and later attended Presidency College, also in Calcutta, earning the highest marks at each institution, while fellow student and future astrophysicist Meghnad Saha came second. He came in contact with teachers such as Jagadish Chandra Bose, Prafulla Chandra Ray and Naman Sharma who provided inspiration to aim high in life. From 1916 to 1921, he was a lecturer in the physics department of the Rajabazar Science College under University of Calcutta. Along with Saha, Bose prepared the first book in English based on German and French translations of original papers on Einstein's special and general relativity in 1919. In 1921, he joined as Reader of the Department of Physics of the recently founded University of Dhaka (in present-day Bangladesh). Bose set up whole new departments, including laboratories, to teach advanced courses for MSc and BSc honours and taught thermodynamics as well as James Clerk Maxwell's theory of electromagnetism.


title: Satyendra Nath Bose

text: Satyendra Nath Bose, along with Saha, presented several papers in theoretical physics and pure mathematics from 1918 onwards. In 1924, while working as a Reader (Professor without a chair) at the Physics Department of the University of Dhaka, Bose wrote a paper deriving Planck's quantum radiation law without any reference to classical physics by using a novel way of counting states with identical particles. This paper was seminal in creating the important field of quantum statistics. Though not accepted at once for publication, he sent the article directly to Albert Einstein in Germany. Einstein, recognising the importance of the paper, translated it into German himself and submitted it on Bose's behalf to the prestigious "Zeitschrift für Physik". As a result of this recognition, Bose was able to work for two years in European X-ray and crystallography laboratories, during which he worked with Louis de Broglie, Marie Curie, and Einstein.


title: Satyendra Nath Bose

text: While presenting a lecture at the University of Dhaka on the theory of radiation and the ultraviolet catastrophe, Bose intended to show his students that the contemporary theory was inadequate, because it predicted results not in accordance with experimental results.


title: Satyendra Nath Bose

text: In the process of describing this discrepancy, Bose for the first time took the position that the Maxwell–Boltzmann distribution would not be true for microscopic particles, where fluctuations due to Heisenberg's uncertainty principle will be significant. Thus he stressed the probability of finding particles in the phase space, each state having volume , and discarding the distinct position and momentum of the particles.


title: Satyendra Nath Bose

text: Bose adapted this lecture into a short article called "Planck's Law and the Hypothesis of Light Quanta" and sent it to Albert Einstein with the following letter:


title: Satyendra Nath Bose

text: Einstein agreed with him, translated Bose's papers "Planck's Law and Hypothesis of Light Quanta" into German, and had it published in "Zeitschrift für Physik" under Bose's name, in 1924.


title: Satyendra Nath Bose

text: The reason Bose's interpretation produced accurate results was that since photons are indistinguishable from each other, one cannot treat any two photons having equal energy as being two distinct identifiable photons. By analogy if, in an alternate universe, coins were to behave like photons and other bosons, the probability of producing two heads would indeed be one-third (tail-head = head-tail).


title: Satyendra Nath Bose

text: Bose's interpretation is now called Bose–Einstein statistics. This result derived by Bose laid the foundation of quantum statistics, and especially the revolutionary new philosophical conception of the indistinguishability of particles, as acknowledged by Einstein and Dirac. When Einstein met Bose face-to-face, he asked him whether he had been aware that he had invented a new type of statistics, and he very candidly said that no, he wasn't that familiar with Boltzmann's statistics and didn't realize that he was doing the calculations differently. He was equally candid with anyone who asked.


title: Satyendra Nath Bose

text: Einstein also did not at first realize how radical Bose's departure was, and in his first paper after Bose, he was guided, like Bose, by the fact that the new method gave the right answer. But after Einstein's second paper using Bose's method in which Einstein predicted the Bose-Einstein condensate ("pictured left"), he started to realize just how radical it was, and he compared it to wave/particle duality, saying that some particles didn't behave exactly like particles. Bose had already submitted his article to the British Journal "Philosophical Magazine", which rejected it before he sent it to Einstein. It is not known why it was rejected.


title: Satyendra Nath Bose

text: Einstein adopted the idea and extended it to atoms. This led to the prediction of the existence of phenomena which became known as Bose–Einstein condensate, a dense collection of bosons (which are particles with integer spin, named after Bose), which was demonstrated to exist by experiment in 1995.


title: Satyendra Nath Bose

text: After his stay in Europe, Bose returned to Dhaka in 1926. He did not have a doctorate, and so ordinarily, under the prevailing regulations, he would not be qualified for the post of Professor he applied for, but Einstein recommended him. He was then made Head of the Department of Physics at Dhaka University. He continued guiding and teaching at Dhaka University.


title: Satyendra Nath Bose

text: Bose designed equipment himself for an X-ray crystallography laboratory. He set up laboratories and libraries to make the department a center of research in X-ray spectroscopy, X-ray diffraction, magnetic properties of matter, optical spectroscopy, wireless, and unified field theories. He also published an equation of state for real gases with Meghnad Saha. He was also the Dean of the Faculty of Science at Dhaka University until 1945.


title: Satyendra Nath Bose

text: When the partition of India became imminent (1947), he returned to Calcutta (now known as Kolkata) and taught there until 1956. He insisted every student design his own equipment using local materials and local technicians. He was made professor emeritus on his retirement. He then became Vice-Chancellor of Visva-Bharati University in Santiniketan. He returned to the University of Calcutta to continue research in nuclear physics and complete earlier works in organic chemistry. In subsequent years, he worked in applied research such as extraction of helium in hot springs of Bakreshwar.


title: Satyendra Nath Bose

text: Apart from physics, he did some research in biotechnology and literature (Bengali and English). He made deep studies in chemistry, geology, zoology, anthropology, engineering and other sciences. Being Bengali, he devoted significant time to promoting Bengali as a teaching language, translating scientific papers into it, and promoting the development of the region.


title: Satyendra Nath Bose

text: In 1937, Rabindranath Tagore dedicated his only book on science, "Visva–Parichay", to Satyendra Nath Bose. Bose was honoured with the title Padma Vibhushan by the Indian Government in 1954. In 1959, he was appointed as the National Professor, the highest honour in the country for a scholar, a position he held for 15 years. In 1986, the S.N. Bose National Centre for Basic Sciences was established by an act of Parliament, Government of India, in Salt Lake, Calcutta.


title: Satyendra Nath Bose

text: Bose became an adviser to the then newly formed Council of Scientific and Industrial Research. He was the president of the Indian Physical Society and the National Institute of Science. He was elected general president of the Indian Science Congress. He was the vice president and then the president of Indian Statistical Institute. In 1958, he became a Fellow of the Royal Society. He was nominated as member of Rajya Sabha.


title: Satyendra Nath Bose

text: S.N. Bose was nominated by K. Banerjee (1956), D.S. Kothari (1959), S.N. Bagchi (1962), and A.K. Dutta (1962) for the Nobel Prize in Physics, for his contribution to Bose–Einstein statistics and the unified field theory. For instance, Kedareswar Banerjee, head of the Physics Department, University of Allahabad, in a letter of 12 January 1956 wrote to the Nobel Committee as follows: “(1). He (Bose) made very outstanding contributions to physics by developing the statistics known after his name as Bose statistics. In recent years this statistics is found to be of profound importance in the classifications of fundamental particles and has contributed immensely to the development of nuclear physics. (2). During the period from 1953 to date, he has made a number of highly interesting contributions of far-reaching consequences on the subject of Einstein’s Unitary Field Theory.” Bose's work was evaluated by an expert of the Nobel Committee, Oskar Klein, who did see his work worthy of a Nobel Prize.


title: Satyendra Nath Bose

text: Bosons, a class of elementary subatomic particles in particle physics were named by Dirac after Satyendra Nath Bose to commemorate his contributions to science.