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 ...

The US Department of Justice (DOJ) announced in January that a Japanese national had pleaded guilty to the attempted trafficking of nuclear materials, including uranium, thorium and plutonium, from ...

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, ...