Second man shows radiation
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Italian Mario Scaramella, a contact of dead ex-spy Alexander Litvinenko, tests positive for polonium-210.
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Two suspected incendiary devices are found by a member of staff at an Oxford University college.
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British scientists probing the death of former Russian spy Alexander Litvinenko said on Friday a second man had been poisoned by the same radiation that killed him.
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A contact of Alexander Litvinenko is to have more tests after testing positive for a radioactive substance.
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Two men are cleared of deadly skin cancer by genetically modifying their immune cells.
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Tests showed that an Italian investigator had a significant amount of radioactive material in his body, officials said.
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More than 800 people in northern Sweden may have developed cancer as a result of the fallout of the 1986 Chernobyl nuclear accident, a new study says.
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A new study suggests more than 800 people in northern Sweden developed cancer as a result of the radioactive fallout caused by the Chernobyl nuclear accident in 1986.
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Second scare was result of not mopping up the first properly, says scientists' leaked report
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A second Russian businessman who met  murdered ex-spy Alexander Litvinenko on the day he fell ill is  now sick from radiation poisoning, local media quoted medical  sources as saying on Friday.
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Many people continue to wonder whether standing next to a microwave while itâs on can expose them to radiation.
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THURSDAY, Sept. 9 (HealthDayNews) -- Could electric light pose a cancer threat?
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NEW YORK  - Outpatient clinics that perform diagnostic procedures using radioactive materials could do a better job of telling patients that they may set off radiation detectors at security checkpoints, a study shows.
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A spectator with an especially intimate view of human evolution is beginning to tell its story and has so far divulged two quite unexpected findings.
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A UK police officer is in Hamburg after radiation is found at addresses connected with a contact of Alexander Litvinenko.
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Noodling around in the lab one day, Antoine Becquerel stumbles upon radioactivity. Compiled by Tony Long.
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The Tottenham defender will learn the results of a second scan after the results of a first investigation showed he had an abnormality.