Old Drought May Be Warning for New West A study in the journal Science finds that droughts in the American West can last hundreds of years. Scientists saw evidence of a centuries-long dry spell in tree rings. There may be implications for the future of the modern West. NPR's John Nielsen reports.
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Old Drought May Be Warning for New West

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Old Drought May Be Warning for New West

Old Drought May Be Warning for New West

Old Drought May Be Warning for New West

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  • <iframe src="https://www.npr.org/player/embed/4078906/4078907" width="100%" height="290" frameborder="0" scrolling="no" title="NPR embedded audio player">

A study in the journal Science finds that droughts in the American West can last hundreds of years. Scientists saw evidence of a centuries-long dry spell in tree rings. There may be implications for the future of the modern West. NPR's John Nielsen reports.