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How the Jaws of Life Work

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The "Jaws of Life" is a huge tool used to free people from mangled cars and burning or collapsed buildings. Learn about this amazingly powerful machine and how it saves lives.

How Mobile Printing Works

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Mobile printing allows people on the go to print documents wherever they choose. Learn about mobile printing and find out how a mobile printer works.

Perl is easy to use once you know the basics. It can be used to create DOS batch files, C shell scripts, CGI scripts for Web pages and more. Get a great introduction to this versatile programming language!

How did a meteor make hundreds of people sick?

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A meteor strike in Peru may have made up to 600 people sick, according to recent reports. Find out if the meteor strike in Peru is what made people sick.

How the DeLorean Works

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The DeLorean became famous in the movie 'Back to the Future' after coming on the market in 1981. Read about DeLorean scandals, features and specs.

How the Orion CEV Will Work

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NASA needs a vehicle capable of carrying crew and payloads to Earth orbit, the moon and Mars. Learn about the basics of the new crew exploration vehicle.

How Screensavers Work

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Screensavers used to be necessary due to CRT monitor quirks -- now, they're mostly used for entertainment and security. Find out what a screensaver is and how it knows when to kick in.

How Electronic Trading Works

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Electronic trading is an extremely complex but reliable way to buy and sell stocks. Learn about electronic trading and find out why e-trading is so reliable.