Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

Nuclear weapons tests are among the most violent events humans can trigger, and that violence leaves fingerprints in the ...

The world passed a nuclear milestone this week. And, perhaps surprisingly given the recent run of saber-rattling from the likes of Russia and the United States, it’s a positive one.

DUBAI, United Arab Emirates (AP) — President Donald Trump’s comments Thursday suggesting the United States will restart its testing of nuclear weapons upends decades of American policy in regards to ...

A subsurface atomic test near Yucca Flats, Nev., in March 1955. (U.S. Atomic Energy Commission via AP) In what would be a major shift in a decades-old American policy against global nuclear ...

President Trump said on Thursday that the U.S. would begin testing nuclear weapons again for the first time in decades. "We've halted many years ago, but with others doing testing I think it's ...

President Donald Trump raised questions Wednesday night about a decades-old U.S. prohibition on testing its nuclear weapons by detonating them, a prospect which experts say is dangerous to populations ...

DUBAI, United Arab Emirates(AP) — President Donald Trump's comments Thursday suggesting the United States will restart its testing of nuclear weapons upends decades of American policy in regards to ...