The United States began developing the atom bomb in military effort called the Manhattan Project. The race to create this weapon kicked off after three chemists in Berlin, 1938, split a uranium atom ...

An atomic bomb test at Bikini Lagoon. Marshall Islands, July 1946. Today is the 80th anniversary of the bombing of Hiroshima and the first use of an atomic bomb in war, in this case by the United ...

Mr. Graff is a journalist, a historian and the author, most recently, of “The Devil Reached Toward the Sky: An Oral History of the Making and Unleashing of the Atomic Bomb.” The 80th anniversary last ...