Californium, a metal synthesised in 1950, is the most expensive material in the world because of its extreme rarity and its applications in medicine, industry and security. This metal, synthesised ...

The Spokesperson said, in the latest incident, a gang of individuals were found in illegal possession of a highly radioactive and toxic substance Californium, worth 100 million dollars in quantity.

If you would like to learn more about the IAEA’s work, sign up for our weekly updates containing our most important news, multimedia and more.