One of hundreds of documents assessing possible ... C.I.A.'s view that while there was a serious threat from a Soviet atom bomb detonation in an American city -- or a biological or nerve gas ...

Photo: Atomic bomb test explosion in Alamagordo ... a new element at all but might have actually split the uranium atom in two -- at that point a barely imaginable event. Before they could ...

It was 12 September 1933. A little under 12 years later, the US dropped an atom bomb on Hiroshima, killing an estimated 135,000 people. The path from Szilard’s idea to its deadly realisation is ...

"Gadget," the first atomic bomb — a 6-foot sphere with a grapefruit-sized Plutonium core, covered in cables — was born out of the Albert Einstein-inspired Manhattan Project, and was detonated ...