Scientific American, informally abbreviated SciAm or sometimes SA, is an American popular science magazine. Many famous scientists, including Albert Einstein and Nikola Tesla, have contributed articles to it. In print since 1845, it is the oldest continuously published magazine in the United States. Scientific American is owned by Springer Nature, which in turn is a subsidiary of Holtzbrinck Publishing Group. History Scientific American was founded by inventor and publisher Rufus Porter in 1845 as a four-page weekly newspaper. The first issue of the large-format newspaper was released on August 28, 1845. Throughout its early years, much emphasis was placed on reports of what was going on at the U.S. Patent Office. It also reported on a broad range of inventions including perpetual motion machines, an 1860 device for buoying vessels by Abraham Lincoln, and the universal joint which now can be found in nearly every automobile manufactured. Current issues include a "this date in history" section, featuring excerpts from articles originally published 50, 100, and 150 years earlier. Topics include humorous incidents, wrong-headed theories, and noteworthy advances in the history of science and technology. It started as a weekly publication in August 1845 before turning into a monthly in November 1921. Porter sold the publication to Alfred Ely Beach and Orson Desaix Munn a mere ten months after founding it. Until 1948, it remained owned by Munn & Company. Under Munn's grandson, Orson Desaix Munn III, it had evolved into something of a "workbench" publication, similar to the twentieth-century incarnation of Popular Science. In the years after World War II, the magazine fell into decline. In 1948, three partners who were planning on starting a new popular science magazine, to be called The Sciences, purchased the assets of the old Scientific American instead and put its name on the designs they had created for their new magazine. Thus the partnerspublisher Gerard Piel, editor Dennis Flanagan, and general manager Donald H. Miller, Jr.essentially created a new magazine. Miller retired in 1979, Flanagan and Piel in 1984, when Gerard Piel's son Jonathan became president and editor; circulation had grown fifteen-fold since 1948. In 1986, it was sold to the Holtzbrinck Publishing Group of Germany, which has owned it until the Springer-Nature merger. In the fall of 2008, Scientific American was put under the control of Holtzbrinck's Nature Publishing Group division. Donald Miller died in December 1998, Gerard Piel in September 2004 and