Harry Truman accelerated the United States’ pace in the nuclear arms race this week in history. The 33rd president of the United States publicly announced his support for the development of a hydrogen ...

Japanese-American hibakusha in the US ― forgotten after Hiroshima. One survivor’s lonely, decades-long struggle for medical ...

Los Alamos researchers propose using neutrino detectors to study nuclear weapon performance via pulsed fission reactors.

I'm not saying it was aliens, ...

The post-war international order may be tearing apart at the seams and international law is increasingly looking like a ...

Earthquake kills 20,000 in western India; Indira Gandhi extends emergency rule; first nuclear explosion at Nevada Test Site; French colonial crackdown in Tunisia.

Finally, on April 15, 1952, the first YB-52 took off for its maiden flight, with a tandem cockpit similar to that of the B-47 ...

The world passed a nuclear milestone this week. And, perhaps surprisingly given the recent run of saber-rattling from the likes of Russia and the United States, it’s a positive one. “As of today, the ...

Following a recent five-hour drive east from Tucson, the New Mexico desert sky was robin-egg blue, with wildflowers gently opening to the sun’s warmth. I was standing at Trinity, ground zero, where ...

Maj. Gen. Kenneth D. Nichols was a key figure in developing U.S. atomic policy during the early Cold War. Tensions between Nichols and AEC Chairman David Lilienthal over atomic weapons production were ...

Nuclear weapons tests were once a regular occurrence, but most countries haven’t tested in decades, following the adoption of the Comprehensive Nuclear-Test-Ban Treaty in 1996. Now, that moratorium ...

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 ...