(Encyclopedia) atomic number, often represented by the symbol Z, the number of protons in the nucleus of an atom, as well as the number of electrons in the neutral atom. Atoms with the same atomic…
(Encyclopedia) Yonath, Ada E., 1939–, Israeli crystallographer, Ph.D. Weizmann Institute of Science, Rehovat, Israel, 1968. Yonath has been a researcher and professor at the Weizmann Institute since…
(Encyclopedia) Piltdown man, name given to human remains found during excavations (1908–15) at Piltdown, Sussex, England, by Charles Dawson. The find led to much speculation and argument. Since they…
Prehistoric Eggs The earliest fossil animal embryos, dating from the Precambrian era, were found by American, Taiwanese, and Chinese scientists in phosphate deposits in China's Guizhou province.…
Ancestor of Mammals Discovered The fossil skull of a 260-million-year-old sheep-sized animal was found near Williston on the Northern Cape, South Africa. It is the most primitive member yet…
—Borgna BrunnerVital Stats of the Universe In one of the most important cosmological discoveries in years, NASA scientists have captured the most precise image of the universe, shedding light on…
Here are the key news events of the month organized into three categories: World News, U.S. News, and Business, Society, and Science News. World | Nation | Business/…
(Encyclopedia) Whitewater, popular name for a failed 1970s Arkansas real estate venture by the Whitewater Development Corp., in which Gov. (later President) Bill Clinton and his wife, Hillary Rodham…
(Encyclopedia) radiumradiumrāˈdēəm [key] [Lat. radius=ray], radioactive metallic chemical element; symbol Ra; at. no. 88; mass number of most stable isotope 226; m.p. 700℃; b.p. 1,140℃; sp. gr. about…
(Encyclopedia) European Commission (EC), institution of the European Union (EU) invested with executive powers; it also is the main EU institution that initiates legislation. Located in Brussels,…
