Gamow's involvement with nuclear physics. His later work in astrophysics and his interest in biology. Personal anecdotes about Gamow's childhood in Odessa, student life with Lev Landau and Dmitriy Ivanenko at the University of Leningrad, his fellowship at Göttingen, work in Copenhagen with Niels Bohr, and at University of Cambridge with Ernest Rutherford. Emigration to America in 1934, subsequent work in the United States. Work on penetration barriers, saturation, the beta decay rule, and the nuclear droplet model.