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A shark sense isn't so different from any of our senses, a shark sense is just sharper underwater. See more about shark sense and how each works.

Some of the best and worst paying jobs aren't what you would expect. Learn more about the best and worst paying jobs at HowStuffWorks.

Asbestos has been around for 3,000 years, but it wasn't until the 1980s that we realized its dangers. Learn more about asbestos.

Gingivitis, commonly called gum disease is the leading cause of tooth loss among adults. Learn how to care for your gums to avoid gingivitis.

Hemangiomas are a type of birthmark. Learn more about how hemangiomas work at HowStuffWorks.

Fighting allergies with honey is a tasty cure for sniffles and watery eyes, but does it work? Investigate how honey could fight allergies.

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

Easy water activities for kids make a splash, and water is a material that's always on hand. Learn easy water activities for kids at HowStuffWorks.

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

Skin care is of vital importance, since skin is the largest and most visible organ of your body. Follow these handy skin-care tips.

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