When did NOVA Season 47 Episode 4 air?
NOVA Season 47 Episode 4 aired on February 26, 2020 at 9 PM ET.
NOVA
PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and technology, and highlights the people involved in scientific pursuits.
Season 47 · Episode 4
Mysteries of Sleep
Aired Feb 26, 2020at 9PM·55m
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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How long is NOVA Season 47 Episode 4?
This episode runs for approximately 55 minutes.
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