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NOVA - Season 47 Episode 4 Mysteries of Sleep

Trailer
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 from memory retention and emotional regulation to removing waste from our brains.

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First Air Date: Mar 03, 1974

Last Air date: Feb 19, 2025

Season: 52 Season

Episode: 999 Episode

Runtime: 55 minutes

IMDb: 6.90/10 by 120.00 users

Popularity: 66.265

Language: English