In Half-Life, physicist and historian Frank Close offers a heretofore untold history of Pontecorvo's life, based on unprecedented access to Pontecorvo's friends and family and the Russian scientists with whom he would later work. Close takes a microscope to Pontecorvo's life, combining a thorough biography of one of the most important scientsts of the twentieth century with the drama of Cold War espionage. With all the elements of a Cold War thriller—classified atomic research, an infamous double agent, a possible kidnapping by Soviet operatives—Half-Life is a history of nuclear physics at perhaps its most powerful: when it created the bomb.physics at perhaps its most powerful: when it created the bomb.