America's greatest twentieth-century scientist tells his own story. Glenn T. Seaborg (1912-1999) won a Nobel Prize before he was forty. He discovered the element that makes atomic bombs explode and the isotopes used to treat millions of cancer patients. He ran the University of California at Berkeley and advised nine U.S. presidents. Here is his autobiography -- the extraordinary story of a modest Swedish American who never strayed from his strong basic commitments throughout a career that gave him national and international fame. Seaborg's story begins in Michigan with his Scandinavian parents, but shifts quickly to California, where he got himself an education he didn't think he could afford during the dark days of the Depression. During World War II, he led the Manhattan Project group that devised the chemical extraction processes producing plutonium 239. He also shares the drama of scientific discovery and the inner history of his pioneering work on the many transuranium elements he co-discovered at the Radiation Laboratory at Berkeley -- work that earned him the Nobel Prize in 1951. As chairman of the Atomic Energy Commission under three presidents, Seaborg fought for the Nuclear Test-Ban Treaty and argued in favor of the peaceful uses and international controls of atomic energy. His is the riveting account of a life like no other -- a model of the best in our nation.