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

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)-- ...

Prior to his meeting with China’s President Xi Jinping in Busan, South Korea on October 30, United States President Donald Trump wrote that he has ordered the U.S. military to resume nuclear testing ...

Though the country’s nuclear arsenal has undergone no explosive testing for decades, federal experts say it can reliably obliterate targets halfway around the globe. By William J. Broad President ...

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

The U.S. nuclear weapon test Bravo (yield 15 Mt) on Bikini Atoll in the Marshall Islands, Mar. 1, 1954. Nowadays, nuclear “tests” are done via computers or laboratory scale experiments and do not ...

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 ...

This is read by an automated voice. Please report any issues or inconsistencies here. Trump says U.S. will restart nuclear testing, reversing decades of policy since the last test in 1992. Russia, ...

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 ...

China took a veiled swipe at the US for plans to change nuclear policies and warned that maintaining large arsenals increases the risk of conflict, after Washington said it would match its rivals by ...