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Maya pictures show you what life was like for the ancient Maya of Central America. Take a look at pictures of the Mayans

Go on any highway and you'll see many vehicles with roof racks. Learn more about your roof rack affecting your gas mileage.

Aoudads are also known as barbary sheep is and live in a female dominant unit. Learn more interesting facts here at HowStuffWorks.

The Crested Porcupine belongs to one of the three species in the genus Hystrix. Learn more about this creature at HowStuffWorks.

Cleaning an air filter can save you up to 15% on your utility bill. Learn more about cleaning a furnace filter.

When does adolescence end? Find out when adolescence ends in this article.

Lithium-ion batteries are most commonly found in cell phones and laptops. Learn whether the lithium-ion battery will soon be powering your car.

Tagged is a social networking site that has become very popular. Learn all about Tagged at HowStuffWorks.

Gene banks preserve thousands of genetic samples from organisms and store them in frozen vaults. Learn why gene banks are becoming more urgent.

Would your house fall apart if you left it standing without any maintenance over time? Find out how long it would take for your house to fall apart.

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