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What does an automotive exhaust system do? Read about the purpose of your car's exhaust system at HowStuffWorks.

How long do transmissions last? Find out how long transmissions last at HowStuffWorks.

Changing transmission fluid is essential for car longevity. Learn how to change transmission fluid at HowStuffWorks.

What makes lampworking unique? Read about the art, technique and tools behind lampworking glass at HowStuffWorks.

The twin towers of the World Trade Center were true originals -- their history is one of innovation, persistence and grand ideas.

Cars and trucks look great on the street -- and on paper. Learn to draw awesome cars, trucks, and more by following the simple steps in this article.

A vaccine is, essentially, a cure for an illness or disease. Who came up with the idea for vaccines and do we give too many shots now?

Fun science projects for kids range from making glue and invisible ink to making virtual vomit and snot. Learn to do fun science projects for kids.

No mother wants to have pregnancy complications or a difficult delivery. Learn what to watch for and see how to prevent pregnancy complications.

Periodic cleaning and regular maintenance is the best way to improve efficiency in your home energy consumption. Learn about home energy efficiency.

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