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REM vs. Non-REM Sleep: The Stages of SleepScientists once thought that sleep was a time when a person's brain and body shut down for the night. But now, researchers know that sleep is a highly active time.
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Why Do We Sleep?Researchers who study sleep now have a few theories about why we spend one-third of our lives in dreamland.
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The Science of Jet Lag: 5 Surprising FindingsNothing can throw off the start of a fun vacation faster than jet lag.
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Sleepiness and Snoring Tougher for Women, Study SuggestsSleep disorders may affect women more severely than men.
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Why Sleep Is So Important for People at Risk for Heart DiseaseNot getting enough sleep is linked to an increased risk of dying early, a new study finds.
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Trouble Sleeping? Air Pollution Could Be the Culprit
People in a new study who lived in areas with high levels of air pollution slept worse.
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Booze snooze: Why does alcohol make you sleepy, then alert?What's behind this weird effect?
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Touch Screens May Be Ruining Toddlers' SleepThis is the first study to look at the link between toddlers' touch-screen use and sleep, the researchers said.
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Scientists Can Now Tell If Someone Is Dreaming from Their Brain WavesPeople who are in a deep slumber may not be able to say whether they're dreaming, but their brain waves might.
