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 ...

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 ...

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 ...

Pakistan has rejected Donald Trump’s claim that it is among a handful of nations actively testing nuclear weapons. A senior Pakistani security official told CBS News his country was “not the first to ...

Nuclear weapons tests are among the most violent events humans can trigger, and that violence leaves fingerprints in the Earth, sea, air, and even in orbit. The physics of shock waves, sound, and ...

Between 1945 and 2017, more than 2,400 nuclear devices were detonated in tests conducted by nuclear powers across multiple continents.

July 16 marked the 66th anniversary of the first nuclear weapons test explosion. The United States’ test, code-named “Trinity,” was exploded in the desert of New Mexico and ignited the nuclear age.