Environment

Western USA megadrought is worst in 1,200 years

The extreme dryness that has ravaged the American West for more than two decades now ranks as the driest 22-year period in at least 1,200 years, and scientists have found that this megadrought is being intensified by humanity’s heating of the planet.

In their research, the scientists examined major droughts in southwestern North America back to the year 800 and determined that the region’s desiccation so far this century has surpassed the severity of a megadrought in the late 1500s, making it the driest 22-year stretch on record. The authors of the study also concluded that dry conditions will likely continue through this year and, judging from the past, may persist for years.

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