The US accused China of secret nuclear explosive testing and attempting to cover it up, an official said Friday. Banned for decades under an international agreement to which China and the US are ...

Southern Nevada’s Congressional delegation is calling on the Trump administration to “reaffirm” the United States’ decadeslong moratorium on explosive nuclear testing, which was concentrated in Nevada ...

U.S. Sen. Jacky Rosen, D-Nev., visited the Nevada National Security Site last week to observe how scientists certify the nation’s nuclear stockpile without detonating weapons, her office said this ...

(CNN) — US intelligence agencies believe that China is developing a new generation of nuclear weapons and has conducted at least one covert explosive test in recent years as part of a broader push to ...