Are diesel engines more efficient than gasoline engines? Find out how diesel engines compare and see how diesel fuel injection and diesel fuel work.

A HEMI engine is a popular high-performance engine type. Learn about the history of the HEMI engine and see what sets a HEMI apart from other engine types.

Lightning is a beautiful but deadly natural phenomenon. Learn about every aspect of lightning, from electrical storms and lightning strikes to lightning rods and lightning safety.

If you've ever been in love, you've probably at least considered classifying the feeling as an addiction. And guess what: You were right -- it's the same chemical process taking ...

Kidney stones can be an extremely painful medical condition. Learn how kidney stones are formed and treated.

Diesel engines differ from gasoline engines in important ways. See a diesel engine in action and learn the mechanics of how diesel engines intake and compress air.

With optical-camouflage technology, the invisibility cloak is a reality. Learn what it is. ... Please copy/paste the following text to properly cite this How Stuff Works article:

Bluetooth technology allows electronic devices to communicate wirelessly. Learn about Bluetooth, Bluetooth headsets and how to link devices.

Presidential candidates face their first big test during the Iowa caucuses. Our primer explains the workings of this piece of the election process.

Bug zappers can help keep your backyard free of pesky insects. Find out how bug zappers kill insects and take a look at the inside of a bug zapper.

How can your offices in Milan, Paris and San Francisco maintain fast, secure and reliable communications with the main office and each other? Virtual private networks give ...

Ghostbusters,' the movie, was fiction, but paranormal investigators really do exist. Learn how real-life ghost busters differ from Hollywood's version.

Do you ever wonder how the Internet really works? How do Web pages and e-mail move to and from your computer? See how the Internet infrastructure works.

Quote services allow brokers and news organizations to receive up to date market price quotes. Find out how quote services deliver the most recent price quotes.

The 1968 Ford Mustang 428 Cobra Jet might have been the quickest Mustang ever. Find out about this muscle car, and see photos and specifications.

Visitors to Dragon*Con 2004 included Boba Fetts, Thor, Stormtroopers, Rollergirl, The Avengers, Predators and many more. Check it out from a safe distance.

You've probably heard about fuel cells. In 2003, President Bush announced a program called the Hydrogen Fuel Initiative (HFI) during his State of the Union

PDAs give you big-time computing power on the go. Learn about PDA technology, get PDA buying tips, read PDA reviews and compare prices on popular PDA models.

Find new car prices from local car dealers in our nationwide network of dealerships. Our free price quote tool will help you find the lowest new car prices availabe.

Compare the best prices on Building Supplies from Consumer Guide and HowStuffWorks ... 15" Long x 1" 12" Center-to-Center/15" Long x 1" 12"

Free New Car Quote ... HowStuffWorks® is a registered trademark of HowStuffWorks, Inc. Content© Publications ...

Please copy/paste the following text to properly cite this How Stuff Works article: ... A computer that connects buyers and sellers when their prices match. Quote services ...

Compare the best prices on Building Supplies from Consumer Guide and HowStuffWorks ... 1-7/8" x 1-1/4"/1-7/8" x 1-1/4"

Football equipment keeps a player's body protected from hard hits. Learn about the different pieces of football equipment and find out what an equipment manager does.

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