Departing in the predawn darkness of Aug. 6, 1945, a modified B-29, designated with radio call sign ‘Dimples 82', was carrying a single bomb. Enola Gay was about to change the world. Approximately a ...

THE FIRST NUCLEAR reactor on earth went critical 2 billion years ago in western Africa when groundwater seeped into a rich vein of uranium ore. It controlled itself elegantly, its water moderator ...

Barbara Scollin, grandniece of Major General Kenneth D. Nichols, continues her series on his life. Ample reasons, most notably leadership skills, personality traits and qualifications, led to choosing ...

The first reports were met with disbelief. A single bomb with the explosive force to level a city; a bomb, detonated with such intensity it burned as bright as — maybe, even brighter than — the sun.

HIROSHIMA, Japan — For more than half a century, chimes have rung out across the Japanese city of Hiroshima every morning at exactly 8:15. The solemn ritual marks the precise moment Aug. 6, 1945, when ...

Editor’s note: The Bulletin of the Atomic Scientists presents here, from its September 1946 issue, an eyewitness account of the first atomic bomb test in the Marshall Islands. In it, the author not ...