The National Nuclear Security Administration’s deputy administrator for defense programs argued in a memo this month that Los Alamos National Laboratory should increase its annual production of ...

Prosecutors said Takeshi Ebisawa tried to sell uranium and plutonium from Myanmar in a plot tied to Iran’s nuclear program.

To help achieve “American nuclear dominance,” Los Alamos National Laboratory may be expected to produce at least 60 plutonium pits per year — double the previously set minimum. It’s not exactly clear ...

A byproduct of aging nuclear weapons stockpiles could help power spacecraft on missions lasting decades. Americium-241, an isotope that can be separated from aged plutonium, is being studied as a ...

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 ...

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, ...

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 ...

I’m as happy as anyone that the Curiosity rover got to Mars; it’s hard not to root for all those NASA geeks in their blue polo shirts. But before you get all American and apple pie about 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 ...

Among the Biden administration’s nuclear challenges are ongoing civilian plutonium programs in China and Japan. Also, South Korea’s nuclear-energy research and development establishment has been ...