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

WEST PALM BEACH, Fla. (AP) — New tests of the U.S. nuclear weapons system ordered up by President Donald Trump will not include nuclear explosions, Energy Secretary Chris Wright said Sunday. It was ...

Add Yahoo as a preferred source to see more of our stories on Google. Earlier this week, Russian President Vladimir Putin revealed that his government has finalized testing of a new nuclear weapon and ...

Add Yahoo as a preferred source to see more of our stories on Google. In an exclusive interview with Meet the Press, Gov. Gavin Newsom (D-Calif.) reacts to President Trump ordering the Pentagon to ...

Resuming full testing of nuclear weapons - as President Donald Trump called for last week - would be unnecessary, costly, undermine nonproliferation efforts, and empower the nation's adversaries to ...

President Donald Trump’s announcement that the U.S. would revive nuclear weapons testing — which the U.S. has not done since 1992 — left experts, lawmakers and military personnel scratching their ...

The United States’ impending resumption of nuclear testing after more than three decades is being touted by President Donald Trump as a method to challenge adversaries. Nuclear experts question the ...