Mysteries of Sleep FULL SPECIAL | NOVA | PBS America

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?

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Welcome to PBS America, a British TV channel from America’s public service broadcaster, PBS, showcasing award-winning American history, science, current affairs, plus arts and culture shows alongside the works of living legend Ken Burns, output is all hand-picked by a British team.

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