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Scientists use both lower snow fall, more blizzards as signs of global warming

February 18, 2013 | 8:19 p.m. CST
Mike Brown of Boston cross country skis past snow-covered cars on Feb. 9 through the Chinatown neighborhood of Boston. Scientists point to both scant recent snowfall in parts of the country and this month's Northeast blizzard as potential signs of global warming.

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