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 ...

LOS ALAMOS, N.M. (KRQE) – New findings from a study aimed at researching how much plutonium is in the ground and water near Los Alamos National Laboratory, have the lead scientists concerned.

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, ...

Marv Adams, deputy administrator for Defense Programs for the National Nuclear Security Administration, speaks to Laboratory ...

They confiscated plutonium and depleted uranium in decorative vials and polymer cubes that Lidden kept by his bedside after buying from a US science collectables website to complete a real-life ...