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Half Your Brain Stands Guard When Sleeping In A New Place

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Sleep Deprived: We're Recharging Our Phones, But Not Ourselves

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Workers try to remove some of the 11 million gallons of oil spilled by the Exxon Valdez off Alaska in 1989. The ship's third mate may have been up for 18 hours before the accident. Rob Stapleton/AP hide caption

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About 40 percent of high schools start before 8 a.m., which contributes to chronic sleep deprivation among teens, according to the American Academy of Pediatrics. Chris Waits/Flickr hide caption

toggle caption Chris Waits/Flickr