Published on February 14, 2021
Summer nights are getting hotter — and that could pose big risks to public health, safety, ecosystems, and agriculture.
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In the U.S., summer nights are warming at nearly twice the rate of summer days. Since 1895, when national temperature records began, overnight low temperatures have increased by 1.4°F every century.
This combination of hot days and hot nights means body temperatures don’t have a chance to reset, crops can dry out, and there’s more risk for wildfires.
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