December 29, 2013 9:35 PM

Is the West’s dry spell really a megadrought?

The drought that has been afflicting most of the Western states for 13 years may be a “megadrought,” and the likelihood is high that this century could see a multidecade dry spell like nothing else seen for 1,000 years, according to research presented at the American Geophysical Union Fall Meeting last week.

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