Caesium

Greece very likely has significant sources of metals and semimetals among the so-called "critical minerals" essential for the transition to clean energy, among other uses, officials at the Ministry of Environment and Energy believe.

A mining corporation on Sunday apologized for losing a highly radioactive capsule over a 1,400-kilometer stretch of Western Australia, as authorities combed parts of the road looking for the tiny but dangerous substance.

The capsule was part of a device believed to have fallen off a truck while being transported between a desert mine site and the city of Perth on Jan. 10.

Japan is considering to release tons of radioactive tritium from Fukushima’s nuclear power plant into Pacific ocean, raising many concerns world widely.

Two smugglers of Georgian origin have been arrested at Turkey's northeastern border for attempting to smuggle caesium and a mercury-like substance, with a combined estimated market value of $2.5 million.