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Ethanol facts help sort out which is better, ethanol or gas? Learn about ethanol facts, and find out if ethanol is more eco-friendly than gas.

Mobile printing allows people on the go to print documents wherever they choose. Learn about mobile printing and find out how a mobile printer works.

Solar battery chargers are popular automotive gadgets. Learn more about solar battery chargers at HowStuffWorks.

Website terms of service are the rules for using a Web site's services. Can you be convicted if you break them? Learn about website terms of service.

A grease car can save you a lot of money on fuel, but can it also cost you in fines from the government? Learn about grease car legality and the EPA.

Do toads cause warts? The wart-like bumps protruding from their backs may give some that impression. Learn if toads cause warts.

Are humans separate from chimps and other apes? Learn what separates us from chimps.

The in-wheel motor may make many of your car's components obsolete. Read about in-wheel motors and learn how they work in this article.

If you back up your hard drive, you can save yourself headaches in the future if you should lose your files. Learn how to back up your hard drive.

Sugar Busters is popular weight-loss program. Learn more about Sugar Busters at HowStuffWorks.

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