WASHINGTON (Reuters) -The U.S. Department of Energy expects to begin announcing by December 31 which companies will take about 19.7 metric tons of surplus Cold War-era plutonium for eventual ...

The US nuclear facility at Hanford, which turns radioactive waste into glass as part ...

SEATTLE(AP) — For much of the 20th century, a sprawling complex in the desert of southeastern Washington state turned out most of the plutonium used in the nation’s nuclear arsenal, from the first ...

LOS ALAMOS — A sphere of plutonium the size of a grapefruit contains enough energy to erase an entire city from existence. That single fact explains why nuclear weapons remain humanity’s most feared ...

Beijing releases 30-page report that includes a call for international community to ‘take concrete and strong measures’ against Japan’s nuclear ambitions.

Editor’s Note: An earlier version of this report stated this was the first time a worker who had inhaled plutonium was speaking publicly. Since then, we have learned that the Seattle Times spoke with ...

America’s last nuclear detonation was nothing special. Smaller than the bomb that killed 73,000 people in Nagasaki, it exploded 1,397 feet below the Nevada desert. It shook the ground, created a ...

The lab where Oppenheimer developed the atomic bomb is the linchpin in the United States’ effort to modernize its nuclear weapons. Yet the site has contended with contamination incidents, work ...

(Reuters) - North Korea has offered to allow U.N. inspectors back to its nuclear facilities to make sure it is not processing highly enriched uranium, a U.S. state governor said on Tuesday after ...