Beginning in the late 1950s, the U.S. met this challenge by developing nuclear batteries known as radioisotope thermoelectric generators (RTGs) and producing plutonium-238 (Pu-238) as their fuel, ...

The immobilization process will include transforming plutonium into a form similar to ceramic or stone. Experts call it a "positive step." We recently reported on the plans of Sweden, which has ...

One person familiar with the discussions said: “If this plutonium is put beyond use, we’ll be throwing away 140 tonnes of future nuclear fuel. “That’s simply economic vandalism. It’s a ...