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Repelling mosquitoes naturally is just as effective as chemical repellants. Learn about strategies for repelling mosquitoes.

Counterfeit detector pens use special chemicals to spot a fake bill. How do they do it?

Does the chemical makeup of coffee change as it's cooled or as it heats, particularly in a microwave? HowStuffWorks investigates.

Urushiol is the active chemical in poison ivy. Learn more about urushiol and how to properly remove poison ivy.

The dangers of food additives are many, and these chemicals are prevalent in today's foods. Learn about the potential dangers of food additives.

What are some of the chemical dangers that might be associated with hydrogen-powered vehicles? Read about the hydrogen-powered vehicle dangers.

Phthalates are chemicals that make plastics stronger and they're in just about everything you touch. But are they harmful to your health?

If the U.S. government won't take a stand on the dangerous chemical, it's up to consumers to watch out for themselves.

This pretty flower has been known for centuries to have chemicals that can regulate your heartbeat but also poison you.

Matches work by combining flammable chemicals with heat from friction. Learn whether you can light a match with sandpaper in this article.

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