The community is facing growing pains again, 80 years later, as Los Alamos National Laboratory takes part in the nation’s most ambitious nuclear weapons effort since World War II. The mission calls ...

What happens when a country seeks to develop a peaceful nuclear energy program? Every peaceful program starts with a promise not to build a nuclear weapon. Then, the global community verifies that ...

As North Korea intensifies testing of its ballistic missile technology, a U.S. website said Friday it also sees further signs from satellite imagery that North Korea is looking to produce more ...

The Hanford Nuclear Reservation in southeastern Washington, long known for producing plutonium for the U.S. nuclear arsenal, is taking a major step in cleaning up decades of radioactive waste. State ...

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 ...

A pair of lawmakers exhorted the Energy Department's top official to consider reining in a major nuclear arsenal modernization program amid long-running concerns over its cost and schedule performance ...