Plutonium is an important radioactive heavy metal, used mainly in nuclear weapons and some types of nuclear reactors. It emits alpha particles, a form of ionizing radiation that can damage living ...

Prosecutors accused a former KGB agent Tuesday of murder in the radioactive poisoning of fellow ex-operative Alexander Litvinenko and sought his extradition from Russia.

Ukraine’s state power company, Energoatom, says Russian troops suffered radiation poisoning "very quickly” after digging trenches in the ground surrounding the site of the 1986 meltdown.

A statement from the ECHR said: “The court found in particular that there was a strong prima facie case that, in poisoning Mr Litvinenko, Mr Lugovoi and Mr Kovtun had been acting as agents of the ...

(Recasts after press conference with quotes) By Stephanie Nebehay LAUSANNE, Switzerland, Nov 7 (Reuters) - The remains of Palestinian leader Yasser Arafat showed test results consistent with polonium ...