NOVA S47E4: Mysteries of Sleep
- Aired: 2020-02-26
- Time: 21:00:00
- Runtime: 60 minutes
Overview
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. So why are we getting so little of it?