During the Cold War, the US Navy conducted hundreds of atomic tests to prepare for the possibility of nuclear conflict. One of the most ambitious was Operation Wigwam, an experiment designed to ...

North Korea said Friday it has tested a nuclear-capable underwater attack drone in response to a combined naval exercise by South Korea, the United States and Japan this week, as it continues to blame ...

The film documents the Operation Crossroads atomic bomb tests conducted at Bikini Atoll in 1946. It details the meticulous preparations, including the positioning of 90 ships as targets, the use of ...

The U.S. and China possess the world's second- and third-largest nuclear arsenals, with 5,177 and 600 warheads, respectively, ...

A massive underwater blast targeting a bridge linking Russia to Crimea left it in a "state of emergency" Tuesday, according to the Ukrainian Security Service (SBU). The surprise detonation comes just ...

The U.S. Department of Energy said on Tuesday it has made an initial selection of 11 projects for a pilot program seeking to develop high-tech test nuclear reactors and get at least three of them to ...

(Corrections & Clarifications: This story previously misstated how far nuclear fallout from the government's atomic tests reached. Fallout from the initial Trinity Test reached 46 of the 48 contiguous ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. SEOUL, South Korea (AP) — North Korea said ...