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Pre-collision systems are designed to prevent accidents. Learn all about pre-collision systems at HowStuffWorks.

Trying to go without a refrigerator is explored in this article from HowStuffWorks. Learn about going without a refrigerator.

Street sweepers have been around for more than a century keeping our roads clean. Learn the history of street sweepers and what they're like today.

Getting solar energy at night is one of the major problems with solar energy. Learn about getting solar energy at night.

Volunteering on Christmas is a wonderful and selfless act. Visit HowStuffWorks to learn all about volunteering on Christmas

What causes underarm darkening? Read about the causes of dark underarms and how to get rid of dark underarm skin.

The Dyson Air Multiplier works like a fan, but it has no blades. Can it be as effective as a traditional fan? What's so different about it?

Marketers rely on information gained from focus groups. Learn how focus groups work.

Formica is a surface material commonly used in home improvement projects. Learn more about formica at HowStuffWorks.

Are you interested in learning how stamped concrete works? Find out how stamped concrete works at HowStuffWorks.

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