NOVA

Mysteries of Sleep Preview

Preview: Season 47 Episode 4 | 27s Video has closed captioning.

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.

Aired: 02/26/20

Rating: NR

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Parentalogic

Parenting is full of obstacles that can be hard to navigate—even without a toddler yelling at your face. There’s no instruction manual, which means discerning fact from fiction and reasonable from ridiculous can be maddening. That’s where Parentalogic comes in, a digital series from NOVA and PBS Digital Studios.

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