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What's more energy efficient for warmer climates: shingles or a metal roof?
home.howstuffworks.com/home-improvement/construction/shingles-or-metal-roof.htm
When it comes to roofing, materials matter -- especially in a hot climate. So when it comes down to asphalt shingles or a metal roof, which really is better?
How Amputation Works
health.howstuffworks.com/medicine/modern-treatments/amputation.htm
What makes a surgical amputation necessary? This article will answer the questions you may have about how amputation surgery works.
How Anesthesia Works
science.howstuffworks.com/anesthesia.htm
Anesthesia is used in surgeries as a method of minimizing pain during the procedure. Learn about anesthesia and the different types of anesthesia.
How MREs Work
science.howstuffworks.com/mre.htm
Coalition troops have been surviving mainly on MREs (Meals Ready to Eat) for most of Operation Iraqi Freedom. Learn what these portable, adaptable and absolutely essential pieces of military technology are all about.
Bird-Watching Activities for Kids
lifestyle.howstuffworks.com/family/activities/bird-watching-activities-for-kids.htm
These bird-watching activities are perfect for children who want to learn more about birds. Learn more about these inventive bird-watching activities.
How Baseball Works
entertainment.howstuffworks.com/baseball.htm
Baseball is America's pastime, but its rules can seem confusing. Learn about baseball rules, baseball equipment and what a major league season is like.
How Fingerprint Scanners Work
computer.howstuffworks.com/fingerprint-scanner.htm
Your fingerprints are not only unique; they're also very hard to fake and even harder to misplace. What better ID to use in a security system? Learn how fingerprint scanners know it's you.
How Spy Flies Will Work
science.howstuffworks.com/spy-fly.htm
Gathering reconnaissance during battle typically puts small teams of soldiers in harm's way. Tiny robotic flyers, called micro air vehicles (MAVs), could do away with this danger. Learn all about spy flies.
Was Tyrannosaurus rex a predator or a scavenger?
science.howstuffworks.com/environmental/earth/geology/t-rex-predator-or-scavenger.htm
Hollywood makes T. rex seem fast and agile, but some scientists think it was a scavenger, like a vulture. So which was it?
How Wave Energy Works
science.howstuffworks.com/environmental/earth/oceanography/wave-energy.htm
Wave energy could be used to create electricity, replacing the burning of fossil fuels. Find out more about wave energy and how it can be harnessed.