Nihonium is a synthetic chemical element with symbol Nh and atomic number 113. It is extremely radioactive; its most stable known isotope, nihonium-286, has a half-life of about 10 seconds. In the periodic table, nihonium is a transactinide element at the intersection of period 7 and group 13. Its creation was reported in 2003 by a Russian–American collaboration at the Joint Institute for Nuclear Research in Dubna, Russia, and in 2004 by a team of Japanese scientists at Riken in Wakō, Japan. The discoveries were confirmed by independent teams working in the United States, Germany, Sweden, and China. In 2015 the element was officially recognised by the IUPAC/IUPAP Joint Working Party; naming rights were assigned to Riken, as they were judged to have been first to confirm their discovery. The name, approved in the same year (announcement pictured), derives from a Japanese word for Japan, Nihon. Few details are known about nihonium, as it has only been formed in very small amounts that decay away within seconds. (Full article...)
1889 – Hyde Park and several other Illinois townships voted to be annexed by Chicago, forming the largest city by area in the United States and the second-largest by population.
... that the Bermuda onion(pictured) was so closely associated with Bermuda that the island's inhabitants became known as "onions"?
... that a U.S. Navy plane piloted by Michael Wettlaufer clipped the tower of a Florida TV station while on a training mission, forcing it off the air for nearly five years?
... that military officer Chris Tanasale was selected as the mayor of Ambon, Indonesia, to prevent the alienation of local Christians?
... that YouTube co-founder Jawed Karim has updated the description of his video "Me at the zoo" on multiple occasions to criticize the website's business decisions?
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