PBS NewsHour

The Power of Sleep: Why Humans Can't Stop Snoozing

Clip: 11/15/2012 | 10m 10s

Sleep deprivation can cause serious health and cognitive problems in humans. In short, it can make us fat, sick and stupid. But why humans do need so much sleep? Science correspondent Miles O'Brien talks to scientists on the cutting edge of sleep research and asks if there's any way humans might evolve into getting by with less.

Aired: 11/15/12

Rating: NR

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