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 ...

Polonium is back in the news as Palestinian leader Yasser Arafat's wife says Swiss forensic tests show he was poisoned to death by it in 2004. Here are five things to know about the radioactive ...

Polonium-210 has been in the spotlight since it was identified as the poison that killed Alexander Litvinenko, a former officer in Russia’s internal security service. Karl K. Turekian, professor of ...

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 ...

A study found companies knew smoking emits radiation, covered it up for years. Sept. 29, 2011— -- Tobacco companies knew that cigarettes contained a radioactive substance called polonium-210, but ...

One hundred years ago, Marie Curie won her second Nobel Prize, in chemistry, for her 1898 discovery of the elements polonium and radium, which she had painstakingly isolated from a radioactive uranium ...