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When should you go to the ER? If you have one of these 10 conditions, the emergency room isn't for you.

Nextel phones offer a service that allows you to push a button and connect with another Nextel user. Find out how this "walkie-talkie" feature works.

Pinewood derby cars are a favorite pastime for kids and adults alike. Learn how pinewood derby cars use gravity and how you can make yours go faster.

Hot dogs are about as American as baseball and apple pie. You know you love them, but do you know what's actually in them?

The 1965 Dodge Coronet 500 Convertible displayed a straight-edge styling with minimal trim. Learn more about the 1965 Dodge Coronet 500 Convertible.

In 2001, Jerry Kugel introduced his line of full-fendered and fenderless Muroc roadsters. Learn more about Muroc roadsters and other hot rods.

The 1971 Ford LTD Convertible Coupe was the first ragtop introduced in the very popular LTD series. Read about and see pictures of this classic car.

How many solar cells would I need in order to provide all of the electricity that my house needs? Learn more about solar cells and how they work.

What special gear is used to film on a boat? Visit HowStuffWorks to learn what special gear is used to film on a boat.

Learn about language difficulties, treatment, and other facts about autism from Discovery Health.

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