Nuclear weapons tests were once a regular occurrence, but most countries haven’t tested in decades, following the adoption of the Comprehensive Nuclear-Test-Ban Treaty in 1996. Now, that moratorium ...

For decades, the idea of saving Earth from an incoming asteroid with nuclear weapons lived mostly in popcorn cinema, a fantasy of oil drillers and last‑minute heroics. Now a new generation of physics ...

Last month, U.S. President Donald Trump rekindled a decades-old debate about nuclear testing. “Because of other countries testing programs,” he wrote on social media, “I have instructed the Department ...

The 1996 Comprehensive Nuclear Test Ban Treaty (CTBT) has not yet entered into force due to the failure of eight key states, including the United States and China, to ratify it and Russia’s decision ...