Americium is one of the lesser-known synthetic elements, first created in 1944 during the Manhattan Project. The isotope of interest for space is americium-241. Its half-life is a staggering 432 years ...

A fragment of plutonium sits in the University of California-Berkeley Hazardous Material Facility, locked in 6-foot-by-6-foot windowless room. It's been hanging around Berkeley for decades, like some ...

The plutonium-244 hints at how heavy metals form in stars. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A rare version of the radioactive ...

Plutonium, a radioactive element, is produced when uranium, another radioactive element, absorbs neutrons, and most of it is artificially produced, except for a small amount found in uranium ore.

WASHINGTON, Feb 9 (Reuters) - The U.S. Department of Energy on Tuesday proposed scrapping a multibillion project in South Carolina to dispose of weapons-grade plutonium by turning it into fuel for ...