The holiday blizzard of 2010 knocked East Coasters out of their routines this week, but there was a hint of deja vú as the snow fell. Big weather events have been making headlines across the country and around the world for several years, now. Last week, enough snow fell in Minneapolis that the roof of the Metrodome collapsed. Blizzards crippled Western Europe's airports and rain deluged San Diego. Is this bad weather part of a new normal? Is global warming bearing down on us at a hastening pace? Richard Seager, Professor at Columbia University's Lamont-Doherty Earth Observatory says it would be easy to react and say that the blizzard is another indication of global warming... but it's not.

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