This, as he found out, isn’t something you should do lightly, as the one he used ended up containing an interesting mix of radioactive materials, including small amounts of plutonium-239 ...

Plutonium discovered at the bottom of the ocean was found to be refuse from a kilonova that exploded close to Earth 10 million years ago. Kilonovas occur when binary neutron stars spiral closer ...

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, ...

Boulder County commissioners are considering whether to continue supporting a project that would create a new trail connection on land contaminated by plutonium that’s next to the former Rocky ...

Kim said Ebisawa admitted at his plea that he “brazenly trafficked nuclear material, including weapons-grade plutonium ... group” in Myanmar who had been mining uranium in the country ...

Japan’s plutonium stockpiles in Britain and France totaled 21.8 tons and 15.4 tons, respectively, as of December 2020. Britain shut down its only M OX plant in 2011, which means it can no longer ...

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 ...