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16-02-22 08:40 pm ಫೋಟೊ

Intense dry spell in US West is worst megadrought in 1200 years

The intense dry spell that has parched the western U.S. the past 22 years is the region's worst "megadrought" since at least the year 800, a new study says. Megadroughts, which are defined as intense droughts that last for decades or longer, once plagued western North America. Now, thanks in part to global warming, an especially fierce one is back.