The trial included first-of-its-kind thermal preconditioning of the bomb before carriage on an F-35 fighter jet.

Instead of a heart biopsy, a nuclear imaging test called a technetium Tc 99m pyrophosphate scan can now detect cardiac ATTR amyloidosis.

Energy Secretary Christopher Wright clarifies U.S. nuclear testing plans, confirming no explosive detonations but systems ...

President Trump directed the U.S. to test nuclear weapons after claiming other countries are, but experts warn about the global impacts of an escalated arms race and what it would do to the American ...

President Trump and one of his top cabinet officials are sending mixed messages on how the U.S. government is handling the most destructive weapons in the world.

The U.S. military will launch an unarmed nuclear missile across the Pacific Ocean overnight Nov. 4, in a pre-planned firing ...

US President Donald Trump claimed that countries like China, Russia, North Korea, and Pakistan are testing nuclear weapons, defending his decision to restart American nuclear testing after three ...

ABOARD AIR FORCE ONE (AP) — President Donald Trump declined to say Friday whether he plans to resume underground nuclear detonation tests, as he had seemed to suggest in a social media post this week ...

MOSCOW, Oct 8 (Reuters) - A top Russian diplomat said on Wednesday that Russia would swiftly carry out a nuclear test if the United States did so, noting that the U.S. had been working to get its ...