New special issue: Russia after Putin

plutonium separation

Some fuels never learn. US Energy Department returns to costly and risky plutonium separation technologies

By Jungmin Kang, Masafumi Takubo, Frank von Hippel | Nuclear Energy, Nuclear Weapons

An after-picture of the Urakami Tenshudo (Catholic Church) in Nagasaki, which was destroyed in 1945 by the fission of about one kilogram of plutonium. Credit: Public domain image accessed via Wikimedia Commons.

Plutonium programs in East Asia and Idaho will challenge the Biden administration

By Frank N. von Hippel | Nuclear Energy, Nuclear Weapons

Robert Alvarez with Li Gun in North Korea.

2003: North Korea: No bygones at Yongbyon

By Robert Alvarez | Nuclear Weapons

A satellite image of China's demonstration plutonium reprocessing plant.

Pinpointing China’s new plutonium reprocessing plant

By Hui Zhang | Analysis, Nuclear Energy, Nuclear Waste

Plutonium storage at the Sellafield nuclear site.

Britain has 139 tons of plutonium. That’s a real problem.

By Christopher Fichtlscherer, Friederike Frieß, Moritz Kütt | Nuclear Risk, Opinion

Forty years of impasse: The United States, Japan, and the plutonium problem

By Masafumi Takubo, Frank N. von Hippel | Uncategorized