Sleep - NOVA Science Now
Why do we need sleep? Part of the answer may be to strengthen memories.

The Sleep-Memory Connection
Explore the stages of a good night's sleep and the research linking sleep to memory.

Ask the Expert
Matt Walker of Harvard Medical School answers questions on how sleep impacts our ability to learn.

Test Yourself
Use a simple typing exercise to see how sleep affects your memory.

Sleepless Surgeons
Just how important is sleep to a surgeon? Find out in this video clip of host Neil Tyson paying a visit to the lab of Harvard sleep researcher Jeff Ellenbogen.

Video Extra
Fruit flies with jet lag? Learn more in this short clip.

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