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An unselfish act is an act in which one person benefits while the person performing the act gains nothing. Find out if an unselfish act is possible.

Legend has it that the Great Chicago Fire started with Mrs. O'Leary's cow and a lantern in the shed. Did a cow really start the Great Chicago Fire?

Learn several effective home remedies for dry hair, everything from ways to wash and dry to spa treatments using items from your refrigerator.

Ayurveda is an ancient Indian system of medicine that is gaining popularity. Learn all about Ayurveda at HowStuffWorks.

Freckles are a common beauty skin problem. Learn more about how freckles work at HowStuffWorks.

Coffee printers use old coffee grounds in place of ink. Visit HowStuffWorks to learn all about coffee printers.

If you've got allergies, you know the drill. Learn allergy symptoms, reactions and the immune-system mix-up we call an "allergy."

America's Army is a video game that was developed by the U.S. military that simulates real-life combat. Learn about the America's Army video game.

Did the Chinese discover America years before Christopher Columbus? Read the evidence that supports the 1421 theory that the Chinese beat Columbus.

In vitro fertilization is the most common type of assisted reproductive technology. Learn more about how the vitro fertilization process works.

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