The authoritative guide to ensuring science and technology make life on Earth better, not worse.

Savannah River Site

The Energy Department just made one plutonium pit. Making more is uncertain

By Dylan Spaulding | Nuclear Weapons

Artist's concept shows future ICBM blasting into sky

Another reason to cancel the Sentinel missile: the rising cost of its nuclear warhead

By Stephen Young | Analysis, Nuclear Weapons

The Plutonium Facility at Los Alamos, in front of the Sangre de Cristo mountains. Photo credit: Los Alamos National Laboratory

Dealing with a debacle: A better plan for US plutonium pit production

By Curtis T. Asplund, Frank von Hippel | Nuclear Weapons

Waste Isolation Pilot Plant receives 12,500th shipment of transuranic waste

Can the Energy Department store 50 tons of weapons-grade plutonium for 10,000 years?

By Robert Alvarez | Analysis, Nuclear Energy, Nuclear Risk, Nuclear Weapons

The troubled Mixed-oxide Fuel Fabrication Facility project at the Savannah River Site is proposed to be transformed into a plutonium pit production facility. Photo (c) Timothy Mousseau, 2019.

Why a decision on a second US plutonium-pit-production factory should be delayed

By Frank von Hippel | Analysis, Nuclear Weapons