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Unusual weather ripped a sizable hole in the ozone layer above the Arctic last winter, exposing people in northern Russia, parts of Greenland and Norway to high levels of UV radiation. Human activity did not cause the hole's sudden appearance, scientists said in a report released Monday. (more)

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Tanning salons everywhere might want to start broadening their business horizons, as cancer experts have just put tanning beds in the same category as arsenic and mustard gas when it comes to the whole probably-will-kill-you factor.

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