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FILE - In this Friday, Oct. 29, 2004 file photo, Palestinian leader Yasser Arafat and his wife Suha hold hands prior to Arafat's departure from his compound in the West Bank town of Ramallah in this ...

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 ...

MOSCOW -- Ninety-seven percent of the legal production of one of the world's rarest industrial products -- the intensely radioactive isotope polonium-210 -- takes place at a closely guarded nuclear ...

LONDON, Jan. 11 -- British authorities are working with officials from 48 countries to evaluate about 450 people who were in London around Nov. 1 and fear they might have been exposed to the ...