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

The world passed a nuclear milestone this week. And, perhaps surprisingly given the recent run of saber-rattling from the likes of Russia and the United States, it’s a positive one.

On October 29, just before meeting with China’s President XI Jinping, President Trump posted on the right-wing social media network Truth Social that “because of other countries [sic] testing programs ...

Nuclear weapons testing has affected every single human on the planet, causing at least four million premature deaths from ...

Senior Russian officials on Nov. 11 said they were still waiting for a White House explanation about what President Donald Trump meant he when said he had instructed the Pentagon to resume nuclear ...

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 ...

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 ...

Nuclear weapons testing has affected every single human on the planet, causing at least four million premature deaths from ...

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 ...

President Trump said Wednesday he directed the Pentagon to immediately start testing U.S. nuclear weapons for the first time since the 1990s to equal testing levels in China and Russia. “The United ...