Watch NOVA Season 49 Episode 4 - Mysteries of Sleep

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NOVA Season 49 Episode 4
From fruit flies to whales, virtually every animal sleeps. But why? Why do we need to spend nearly a third of our lives in such a defenseless state? Scientists are peering more deeply into the sleeping brain than ever before, discovering just how powerful sleep can be, playing a role in everything More
First Aired: February 26, 2020 - 53 Minutes Runtime
Season 49 Episode 4 - Video Clips & Extras

Watch NOVA - Mysteries of Sleep (s49 e4) Online - Watch online anytime: Buy, Rent

NOVA, Season 49 Episode 4, is available to watch and stream on PBS. You can also buy, rent NOVA on demand at Amazon, PBS, iTunes online.