I Did Not Know This

It's the birthday of physicist Leo Szilard, born in Budapest, Hungary (1898). In 1939, a few years after coming to America, knowing that German scientists had discovered nuclear fission, he drafted the famous letter that Albert Einstein sent to President Roosevelt advocating the development of an atomic bomb. Three years later, in the Manhattan Project, he and Enrico Fermi oversaw the first nuclear chain reaction. "We turned the switch and saw the flashes," he wrote later. "We watched them for a little while and then we switched everything off and went home. That night there was no doubt in my mind that the world was headed for grief." In 1961 he published a book of satirical fantasies on the misuse of science called The Voice of the Dolphin, and the following year he founded the Council for a Livable World, a lobbying group for arms control.