There has not been a major (or minor) nuclear explosion since the 1960s. This is almost entirely because ...

North Korea warned this week that it might test a hydrogen bomb in the Pacific Ocean, after saying the country had already successfully detonated one. A hydrogen bomb has never be ...

The Tsar Bomba's explosion was unparalleled in power. With a 50 megaton capacity, this nuclear test was estimated to be 3,800 times the strength of the Hiroshima atomic bomb. And although short video ...

The US military has lost six nuclear warheads in Broken Arrow incidents including the Tybee Island bomb ...

The US has a total of six missing nuclear warheads out of 32 known Broken Arrow accidents - with each powerful enough to obliterate a city and kill millions ...

Four nuclear reactors in Fukushima, Japan, exploded 15 years ago on March 11, 2011, touching off a nuclear catastrophe Japan ...

The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing are unraveling.

A nuclear escalation in the Middle East would trigger a global catastrophe. Know the physics behind nuclear weapons, and the ...

A U.S. official focusing on arms control has provided what he called new, declassified details of a Chinese underground ...

According to President Trump, the latest U.S. incursion into the Middle East is justified in part because he was not ...