Perhaps no scientific breakthrough has shaped the course of human history as much as the harnessing of the atom. Yet the twentieth century might have turned out entirely differently had this powerful technology stayed under the control of Great Britain, whose scientists spearheaded the Allies nuclear arms program at the outset of World War II. As award-winning science historian Graham Farmelo reveals in Churchills Bomb, Britains supposedly visionary leader remained unconvinced of the potentially earth-shattering implications of his physicists research. Churchill ultimately shared Britains nuclear secrets withand ceded its initiative toAmerica, whose successful development and deployment of an atomic bomb placed the United States in a position of supreme power at the dawn of the Nuclear Age.A groundbreaking investigation of the twentieth centurys most important scientific discovery, Churchills Bomb reveals the secret history of the weapon that transformed modern geopolitics.