President Trump said on Thursday that the U.S. would begin testing nuclear weapons again for the first time in decades. “We’ve halted many years ago, but with others doing testing I think it’s ...

Discover the dramatic story behind the Tsar Bomba, the largest nuclear weapon ever detonated. This video explores its Cold ...

Was President Trump’s recent directive to resume U.S. nuclear testing — after a hiatus of 33 years — an actual policy decision? Or was it a political stunt to project toughness? His surprise ...

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 ...