Nuclear bombs do not rely on size, they rely on physics. Here is how chain reactions and hydrogen bombs unleash power on a ...

In nuclear terms, Japan is a classic “latent nuclear power,” meaning it is a country that doesn’t have nuclear weapons but ...

SEATTLE (AP) — For much of the 20th century, a sprawling complex in the desert of southeastern Washington state turned out most of the plutonium used in the nation’s nuclear arsenal, from the first ...

The two lawmakers questioned the necessity of the nuclear weapons agency's plutonium pit strategy in a letter exclusively shared with USA TODAY.