In less than a millionth of a second after a nuclear detonation or a severe nuclear reactor accident, an enormous burst of energy heats the surrounding air and materials. Everything in the vicinity is ...

In 1946, the United States began testing nuclear weapons in the Marshall Islands, a tiny country in the Northwest Pacific.

Utah writer and activist Mary Dickson has spent decades exploring the consequences and legacy of U.S. nuclear testing in the American southwest, and the “downwinders” who suffered as a result. Yet ...

Following recent comments on nuclear testing by United States President Donald Trump and Russian leader Vladimir Putin, it’s more important than ever to remember that nuclear detonations — whether in ...

Scientists at Lawrence Livermore National Laboratory recreated part of the intense chaos inside a nuclear fireball to better understand how radioactive fallout forms. Their experiments revealed that ...

A British nuclear test conducted on the Pacific island of Kiritimati (also known as Christmas Island) in 1957. Smith Archive/Alamy “The Ministry of Defence has always maintained that it never rained,” ...