WHAT'S INSIDE: HUMAN BODY

The human body is an amazing structure made up of many fascinating parts and systems. Learn about the human body and how its systems work together.
  • Body Parts
  • Body Systems

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How much do you know about the human body?

FPO

The results of several studies illustrate the damage air pollution is doing to our brains, and the picture isn't pretty.

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How Colorblindness Works

Roses are red, violets are blue -- well, bluish. The sky is blue, too. Grass is green. These are things that most of us know for a fact and don't question. But what if you were colorblind? What would you see? Is life one long black-and-white movie?

How Muscles Work

Muscles are one of those things that most of us take completely for granted, but they're the body's engine. Without our muscles, we couldn't walk or talk -- and our blood would stop flowing.

HEALTH: HUMAN BODY

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