Both Scotland Yard and Russian authorities are now investigating the alleged murder of Alexander Litvinenko, an ex-lieutenant colonel in the KGB, who died in London from a dose of polonium-210 on Nov.

LONDON The deadly radioactive element polonium first hit the headlines when it was used to kill KGB agent-turned-Kremlin critic Alexander Litvinenko in London in 2006. Scientists at Switzerland's ...

The poisoning death of Alexander Litvinenko in November caused by the radioactive isotope polonium-210 sparked a sharp interest in the exotic material, but the onetime Russian spy was not the first to ...

Polonium first hit the headlines when it was used to kill KGB agent-turned-Kremlin critic Alexander Litvinenko in London in 2006. This week, Yasser Arafat's widow has called for the late Palestinian ...

With a Swiss forensics investigation pointing to polonium-210 as a possible cause of Yasser Arafat's death, the radioactive element is back in the news. Confirming whether the Palestinian leader died ...

Swiss scientists say they've found evidence that Palestinian leader Yasser Arafat may have been poisoned with polonium. The deadly radioactive element first hit the headlines when it was used to kill ...