Greg Spriggs, a nuclear-weapons physicist, breaks down nuclear-test scenes in Christopher Nolan's "Oppenheimer" for realism.

From 1945 to 1962, the U.S. conducted 210 atmospheric nuclear tests, filming each with high speed cameras at about 2,400 frames per second. Decades later, roughly 10,000 reels sat unseen in secure ...

Editor’s note: If you’d like to pinpoint the instant when the world entered the nuclear age, 5:29:45 a.m. Mountain War Time on 16 July 1945, is an excellent choice. That was the moment when human ...

Though the country’s nuclear arsenal has undergone no explosive testing for decades, federal experts say it can reliably obliterate targets halfway around the globe. By William J. Broad See more of ...