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Allergies are the body's overreaction to certain substances. Learn whether lavender plants can cause allergies in this article.

The thought of terraforming Mars is one of those ideas so outrageous that it just might work! Learn how it will work!

Most of us associate whale death with video footage showing beached whales. Learn what causes whale death and how whale death can sustain life.

Cayenne pepper can be used in a number of herbal remedies from sore throats to high blood pressure. Learn about cayenne pepper herbal remedies.

Weather gadgets are growing in popularity. Learn more about weather gadgets at HowStuffWorks.

Air conditioning with ice blocks is taking root among some of the world's most powerful companies. Learn how air conditioning with ice blocks works.

"Hotel for Dogs" tells the story of siblings who take in dozens of stray dogs. Learn how filmmakers kept up with so many animals in "Hotel for Dogs."

Furnaces are usually trouble-free and easy to maintain. Efficient operation is a function of good maintenance. Learn how to maintain a furnace.

Rhinophyma is a term used to describe a common skin problem that appears on the nose. Learn more about the term rhinophyma at HowStuffWorks.

What is the function of skin? Visit HowStuffWorks to learn more about the many essential functions of the skin.

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