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Anatomy and Physiology

Get all wrapped up in a lesson about your skin.

To see or not to see.

Stare at one color—but see another.

Explore the basis of lactose intolerance.

Watch de-shelled eggs swell and shrink in different fluids.

Use your skin and different metals to create a battery.

Can stem cells treat Alzheimer's disease?

When you pick up a baseball, it immediately suggests its purpose: to be thrown fast and with considerable accuracy.

You may be surprised at the results of this "wimpy" workout.

Identify misalignments in your body by looking at your feet.

The 18,000-foot Mt. Parinacota presents some fitness challenges for climbers.

A rock-climbing physicist explores the mechanics of his hands.

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