Nuclear weapons can produce some of the most devastating destruction of any device ever created by humankind -- so what happens when someone makes a mistake?

What happened there was a catastrophic disaster ... most powerful nuclear device ever detonated by the United States. The Castle Bravo was scheduled for testing on March 1, 1954, the same day ...

On Mar. 28, 1979, the most significant nuclear power accident in U.S. history began after a pressure valve failed to close at the Three Mile Island nuclear plant near Harrisburg, Pa. What followed ...

The accident that took place at Fukushima Daiichi has fundamentally changed the nuclear power sector and its approach to safety. Experiences and lessons learned from the accident, as well as ...