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 ...

A portion of "problematic plutonium" has safely been processed into a stable waste form in a UK first, a nuclear disposal ...

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 ...

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 ...

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 ...

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 ...

Investors are giving Oklo (NYSE: OKLO) the cold shoulder this December. The nuclear energy stock slumped on Wednesday, ...

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.

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 ...

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 ...

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 ...