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

It's an unintended consequence of the Atomic Age. Dan Smith shows how nuclear testing inadvertently affected steel production ...

CNN's Matthew Chance was given rare access to Kazakh villages where above-ground nuclear tests have left generations scarred. Here, he describes what he saw for CNN.com. SEMEY, Kazakhstan (CNN)-- ...

Donald Trump has repeatedly called the proliferation of nuclear weapons “the n-word,” his way of warning that speaking “nuclear” into existence puts the world on the path of mutually assured ...

President Donald Trump ordered the Department of War to resume testing nuclear weapons “on an equal basis” with Russia and China on Thursday, a practice halted by the U.S. in 1992. The announcement ...

MAJURO, MARSHALL ISLANDS — Lemeyo Abon learned about snow from the movies played on projectors by visiting American sailors. But living on Rongelap — a remote tropical atoll in the central Pacific ...

Semipalatinsk was the primary nuclear testing ground of the Soviet Union. Between 1949 and 1989, hundreds of atomic and ...

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 ...

VIENNA (AP) — The United States and Russia have both recently threatened to resume nuclear testing, alarming the international community and jeopardizing a global norm against such tests. Experts say ...

Matt Korda, the associate director of the Nuclear Information Project at the Federation of American Scientists, assisted USA ...