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Brain Quiz

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More About the Brain

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See what can travel faster than a jumbo jet, wipe out entire civilizations, and confound the world's top researchers.

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Article: Why Are We So Fat?

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Article: Chemicals Within Us

Modern chemistry keeps insects from ravaging crops, lifts stains from carpets, and saves lives. But many of these compounds are absorbed by the body and stay there for years.

Health and Human Body Topics

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Body: The Complete Human

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Explore the human machine.

The Incredible Human Body DVD and Video

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Explore the human body from the inside out.