Public health officials in San Francisco said no “immediate action” is needed to protect public safety after airborne plutonium was detected in the city .

A packed and at times tense community meeting in San Francisco’s Hunters Point on Monday drew frustration from residents ...

More than a half century after the U.S. ignited 67 atomic weapons in the central Pacific Ocean, a former Navy base in the Bay ...

Washington may finally be on the verge of doing something smart. After decades of handwringing over what to do with America’s stockpile of Cold War plutonium, policymakers are talking about turning it ...

Here we argue that the substantial volume expansion that occurs when metallic plutonium changes from the α- to the δ-phase is the manifestation of the competition between localization (caused by the ...

Plutonium can be used to make nuclear bombs. But it can also be recycled and used as a fuel in nuclear reactors. According to the authors of a Nature editorial, the UK—which has the largest civilian ...

WASHINGTON — Ever since 2013, when NASA shelved development of a new plutonium battery four times more efficient than those used today, the agency has been forced to come up with creative solutions ...

A fragment of plutonium sits in the University of California-Berkeley Hazardous Material Facility, locked in 6-foot-by-6-foot windowless room. It's been hanging around Berkeley for decades, like some ...

The clean-up of a decommissioned US nuclear weapons plant has unearthed one of the oldest known samples of man-made plutonium. Workers found roughly half a gram of weapons-grade plutonium-239 (Pu-239) ...

When NASA's next Mars rover blasts off later this month, the car-sized robot will carry with it nearly eight pounds of a special kind of plutonium fuel that's in short supply. NASA has relied on that ...