Next month it will have been 80 years since the Japanese cities of Hiroshima and Nagasaki were devastated by nuclear attacks. More than 200,000 people – mostly citizens – would die by the year's end ...

A Princeton University simulation shows how a single low-yield nuclear weapon could rapidly spiral into a full-scale ...

A terrifying new simulation reveals what really happens when a nuclear bomb detonates—and the truth is more horrifying than you think. From blindness and third-degree burns two miles away to instant ...

The 80th anniversary of the atomic bombing of Hiroshima and Nagasaki is this week. It was the only time nuclear warheads were used during war. Here’s a look at the history and current U.S. stockpile.