Out of this surreal convergence of spectacle and science emerged one of the most striking and unsettling cultural icons of ...

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

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 ...

It remains to be seen whether the three big nuclear powers are headed into a new arms race, or whether President Trump is trying to spur negotiations on a new accord now that a last Cold War treaty ...

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

Beijing has been accused of conducting secret nuclear explosion tests and attempting to disguise its violation of a global prohibition treaty.

Canada’s former top soldier says we need to consider developing nuclear weapons in the name of strategic independence. But that will have massive costs ...

To protect Allied astronauts and spacecraft, U.S. commanders need to stage a preemptive strike on Russia’s atomic-armed ASAT missile before it can be launched into orbit.

Mr. Coghlan’s letter has not been fact-checked by the Los Alamos Reporter. In its own words, “The New Mexico Environment ...

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.

Pentagon and DOE launch a historic initiative for next-gen nuclear reactors at military bases, enhancing energy independence ...

Mobile reactor transported from California to Utah for testing, Trump’s nuclear modernization push ...