Scientific knowledge about the damaging effects of nuclear-weapons testing helped to end such tests. Those findings haven’t changed.

Clashing accusations between Washington, Moscow, and Beijing threaten to unravel decades of restraint on nuclear explosions and put the global test-ban effort at risk.

Add Yahoo as a preferred source to see more of our stories on Google. President Donald Trump's order late Wednesday night for the U.S. to resume nuclear weapons tests has confounded officials and ...

"The jury remains out on whether the June 2020 event was a nuclear test or not. What is certain is that we are in a time of ...

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 ...

WASHINGTON — Democratic senators representing states that bore the brunt of the fallout from explosive nuclear weapons testing are seeking to pass legislation that would bar President Donald Trump ...

In the midst of trading promises with both allies and adversaries during his recent tour of Asia, U.S. President Donald Trump dampened the positive mood with an ominous pronouncement. “Because of ...

Speaking before the Conference on Disarmament in Geneva, Russian ambassador Gennady Gatilov decried US President Donald Trump ...

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 ...

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 ...