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

The ongoing conflict between the US and Iran has raised suspicions about potential nuclear tests by the United States, ...

The outbreak of earthquake swarms near the nuclear testing site has come at a time when the US launches a massive bombing ...

Add Yahoo as a preferred source to see more of our stories on Google. 2002 Lop Nur nuclear test site On the edge of a vast desert in north-west China lies a dried-up salt lake. Its remote, barren ...

The U.S. Air Force launched a Minuteman III intercontinental ballistic missile from Vandenberg Space Force Base in California ...

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

While China is expanding its nuclear arsenal at a dramatic pace, Russia and the U.S. are also testing new delivery platforms.

Scientific knowledge about the damaging effects of nuclear-weapons testing helped to end such tests. Those findings haven’t changed.

Humans’ learning about nuclear concepts that led to nuclear energy and nuclear bombs was one of the most important turning points in human history. This represented the first time that humanity ...