The fuel rods at all six reactors at the stricken Fukushima Dai-ichi complex contain plutonium — better known as fuel for nuclear weapons. While plutonium is more toxic than uranium, other radioactive ...

After 50 years of searching, physicists have spotted the fingerprint of radioactive plutonium, revealing the secrets of this complex molecule behind nuclear weapons. The researchers found the ...

After 50 years of searching, physicists have spotted the fingerprint of radioactive plutonium, revealing the secrets of this complex molecule behind nuclear weapons. The researchers found the ...

(CNN) — Idaho State University has been fined after it lost track of a small amount of plutonium 239, a substance used to make nuclear weapons. University Officials say the sample, missing since 2003, ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. The discovery of nuclear fission in ...

Opinions differ on whether the half ton of weapons-grade plutonium secretly shipped by the U.S. government to the Nevada National Security Site could impact residents’ health and the environment.

Devoted fans can wait hours on the red carpet to get their favourite movie star’s autograph, but that’s nothing compared to acquiring the signature of plutonium-239. After 50 years of trying, ...

Today in jeepers: There's a speck of weapons-grade plutonium missing in Idaho. According to a Nuclear Regulatory Commission (NRC) statement, 1 gram (0.04 ounces) of plutonium-239 — about the weight of ...

Update: Since publication, Jon Schwantes has discovered that a microgram sample of plutonium produced in 1942 by Glen Seaborg’s group at the University of California in Berkeley is also ...