Completing the construction and outfitting of a facility for training the operators who will produce plutonium pits at the ...

Add Yahoo as a preferred source to see more of our stories on Google. A person reflects in the window of the U.S. Department of Energy, with the official portrait of U.S. President Donald Trump on the ...

MOSCOW (Reuters) -Russia's lower house of parliament on Wednesday approved a move to withdraw from a landmark agreement with the United States aimed at reducing vast stockpiles of weapons-grade ...

Newly released memo urges Los Alamos to accelerate plutonium pit production as critics raise safety and environmental concerns.

Three fuel assemblies with uranium-plutonium REMIX fuel have completed their third 18-month VVER-1000 fuel cycle at Russia's ...

Plutonium contamination persists in canyon ecosystems near Los Alamos National Laboratory in New Mexico, with recent research ...

WASHINGTON — NASA is facing the prospect of trying to explore deep space without the aid of the long-lasting nuclear batteries it has relied upon for decades to send spacecraft to destinations where ...

NASA's newest Mars rover, Curiosity, is one in a long line of spacecraft to be powered by the radioactive element, plutonium. Yet, with this chemical quickly becoming scarce, it may be the last, ...

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The Nuclear Nonproliferation Treaty (NPT), whose tenth review conference is coming up in August, is in trouble, and not only because of the crescendo of complaints about the failure of the ...

In 1977, the Voyager 1 spacecraft left Earth on a five-year mission to explore Jupiter and Saturn. Thirty-six years later, the car-size probe is still exploring, still sending its findings home. It ...