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

The Rulison test — conducted at a depth of 8,425 feet — was the deepest subterranean nuclear-bomb detonation conducted in U.S. history.

Jay Cowan still worries about the Rulison blast’s proximity to the Colorado River and expresses disbelief at the 107 days that radioactive gas was burned in order to test whether the radionuclides ...

From AI deepfakes targeting officials to quiet U.S. boots returning to West Africa and a nuclear micro-reactor riding a C-17 toward the future fight, the common thread is simple: trust, presence, and ...

The New START agreement between the USA and Russia is dead, and there are concerns this will lead to a nuclear-testing ...

The Pentagon is drawing new authority lines along the border, keeping the C-17 fleet flying into the 2070s while pushing more ...

A top arms diplomat at the State Department recently laid out what might come next as Washington upends decades of federal policies on nuclear proliferation.

A small nuclear test reactor arrived in Utah aboard U.S. military aircraft. It won’t power homes, but state and federal leaders say it signals a new chapter for Utah’s energy future. Here’s what to ...

Maybe the US will let Denmark keep this part of Greenland. Two Danes claim they developed cancer after helping to clean up ...

Last year, an explosion at U.S. Steel's Clairton Coke Works outside Pittsburgh killed two U.S. Steel workers and injured 11 ...

A federal safety agency investigating an August blast at a U.S. Steel plant near Pittsburgh that left two workers dead says ...

In 1963, President John F. Kennedy kicked off a decades-long effort to reduce the risk of nuclear war, when he signed the ...