The National Nuclear Security Administration’s deputy administrator for defense programs argued in a memo this month that Los Alamos National Laboratory should increase its annual production of ...

The United States is preparing to mine a rare nuclear resource from some of its most dangerous Cold War legacies, turning aging plutonium waste into fuel for reactors and power for spacecraft. The ...

LOS ALAMOS — A sphere of plutonium the size of a grapefruit contains enough energy to erase an entire city from existence. That single fact explains why nuclear weapons remain humanity’s most feared ...

The Hanford Tank Waste Treatment and Immobilization Plant was built to turn that nuclear waste into glass; it started operating in October 2025. The history of the Hanford Site and the way the stored ...

The UK's Nuclear Decommissioning Authority announced it has succeeded in safely processing a can of plutonium residue into a stable waste form for the first time, marking a significant step toward ...

North Korea warned this week that it might test a hydrogen bomb in the Pacific Ocean, after saying the country had already ...

(Reuters) - North Korea has offered to allow U.N. inspectors back to its nuclear facilities to make sure it is not processing highly enriched uranium, a U.S. state governor said on Tuesday after ...