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What does it mean when someone has a heart bypass operation?

Elevator cables pull an elevator up and down the shaft. What would happen if they snapped? Find out what would happen if the elevator cables snapped.

Are you wondering what did our ancestors eat to clean their teeth? Check out this article and learn what our ancestors ate to clean their teeth.

Have you ever wondered what's cleaner, a toilet bowl or a kitchen sponge, you're in luck. Learn what's cleaner, toilet bowl or kitchen sponge.

What is typical adolescent behavior? Learn about typical adolescent behavior in this article.

Is the U.S. a democracy or a republic? Or both? And what's the difference, anyway?

What collagen-boosting ingredients are found in skin care? Learn what collagen-boosting ingredients are found in skin care in this article.

Vomiting bile isn't a pleasant thing, but what does it mean and what is your body trying to tell you? Learn about vomiting bile at HowStuffWorks.

What's the difference between strategic and financial planning? Find out at HowStuffWorks.

Why does gasoline contain MTBE, and what is the problem with it?

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