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Why longer winters may be on the way

Mark Fischetti, senior editor at Scientific American, says that the jet stream - the river of air in the northern hemisphere that blows west to east and drives most of the D.C. region's weather - has been changing, and it means that extreme-weather periods will last longer.

Tuesday - 02/18/2014, 05:29am EST

Tags: weather, jet stream, dick uliano, Mark Fischetti, Scientific American