Aug. 18—Federal officials estimate Los Alamos National Laboratory won't produce 30 nuclear bomb cores until 2030 — four years after the legally required deadline. The additional time needed to produce ...

The Energy Department is moving to resume production of plutonium-238 as an energy source for spacecraft and some national security activities, because existing supplies will be virtually gone in five ...

The United States is preparing to mine a rare nuclear resource from some of its most dangerous Cold War legacies, turning ...

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 ...

WASHINGTON (Reuters) -The Trump administration plans to make available about 20 metric tons of Cold War-era plutonium from dismantled nuclear warheads to U.S. power companies as a potential fuel for ...

SPOKANE, Wash. (AP) — Costs to clean up a massive nuclear weapons complex in Washington state are usually expressed in the hundreds of billions of dollars and involve decades of work. But one project ...

TOKYO - Last year's tsunami disaster in Japan clouded the nation's nuclear future, idled its reactors and rendered its huge stockpile of plutonium useless for now. So, the industry's plan to produce ...

North Korea appears to be making new nuclear bomb fuel, satellite imagery shows, even as its leader, Kim Jong Un, has expressed willingness to negotiate atomic disarmament with President Donald Trump.

Siegfried Hecker, former director of the U.S. nuclear weapons laboratory in Los Alamos, told Congress that North Korea did not show him conclusive evidence of a nuclear weapons program during his ...

North Korea has confirmed it has produced "a little bit of plutonium" for experimental use at a secret nuclear facility, the Japanese national television network NHK reported Wednesday. A member of ...

An American nuclear weapons expert who recently visited North Korea’s main nuclear complex said Wednesday he saw no convincing evidence that Pyongyang can build a plutonium-based nuclear device, but ...