Global warming may make it more difficult to get a decent night's sleep.

BOSTON - Global warming may have a significant impact on our capacity to sleep well.

It's difficult to sleep when it's hot and humid outside, and when global temperatures rise, billions of people will have even more trouble sleeping.

From 2015 to 2017, almost 47,000 people from 68 nations wore sleep-tracking wristbands, according to a new study.

People slept less on nights that were hotter than usual, according to researchers.

High temperatures are predicted to cause at least two weeks of interrupted sleep per year by the end of the century.

The elderly, who are more susceptible to temperature changes, and those with lower resources will be the ones who suffer the most.

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