In 1958, just before a ban on atmospheric testing took effect, the United States carried out a highly secret naval operation ...

America’s last nuclear detonation was nothing special. Smaller than the bomb that killed 73,000 people in Nagasaki, it exploded 1,397 feet below the Nevada desert. It shook the ground, created a ...

The U.S. military test-launched an unarmed intercontinental ballistic missile from Vandenberg Space Force Base on May 20, ...

DUBAI, United Arab Emirates — 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 the ...

Samples of "trinitite" created during the world’s first nuclear bomb test in 1945 contain unique crystals never seen before.

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 ...

The head of the organization overseeing a treaty banning nuclear testing is warning that if the United States, Russia or any other nation goes ahead with a test, other nations will follow.

Russia's Vladimir Putin ordered top officials on Wednesday to submit plans for the possible resumption of nuclear testing, a direct response to President Donald Trump's surprise instruction for the ...

Energy Secretary Chris Wright said Sunday that the Trump-ordered nuclear weapons tests will not involve explosions of any kind. “I think the tests we’re talking about right now are system tests,” ...