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How Tape Recorders Work
electronics.howstuffworks.com/gadgets/audio-music/cassette.htm
Magnetic recording is the backbone of the electronics revolution. Learn how this analog technology lets you store and erase data!
How Does GPS Work?
electronics.howstuffworks.com/gadgets/travel/gps.htm
For less than $100, you can get a pocket-sized gadget that will tell you exactly where you are on Earth at any moment. As long as you have a GPS receiver and a clear view of the sky, you'll never be lost again. Learn more!
What Is Pi?
science.howstuffworks.com/math-concepts/pi.htm
Whether the circle is as big as planet Mars or as small as a tennis ball, the ratio of its circumference divided by its diameter will always equal pi (3.14). But why?
Why Is Yawning Contagious?
science.howstuffworks.com/life/inside-the-mind/human-brain/contagious-yawn.htm
Contagious yawning is associated with the same parts of the brain that deal with empathy, according to a recent study. Learn about contagious yawning.
Microdermabrasion Overview
health.howstuffworks.com/skin-care/beauty/skin-treatments/microdermabrasion.htm
Microdermabrasion is a skin-care technique that uses tiny rough grains to buff away the surface layer of skin. Learn about microdermabrasion and skin anatomy.
Should a Man Take a Cold Shower After a Workout?
health.howstuffworks.com/wellness/men/hygiene/should-man-take-cold-shower-after-workout.htm
Should a man take a cold shower after a workout? Visit Discovery Health to learn if a man should take a cold shower after a workout.
What's a prehistoric toolkit and how could it rewrite human history?
science.howstuffworks.com/life/evolution/prehistoric-toolkit.htm
A prehistoric toolkit is a set of tools that early humans utilized. Learn about a prehistoric toolkit in this article from HowStuffWorks.
How is carbon dioxide eliminated aboard a spacecraft?
science.howstuffworks.com/carbon-dioxide-eliminated-aboard-spacecraft.htm
To get carbon dioxide eliminated aboard a spacecraft you need a system similar to SCUBA. Learn about carbon dioxide elimination.
Shea Lotion Basics
health.howstuffworks.com/skin-care/moisturizing/products/shea-lotion.htm
Shea lotion is used for extreme moisturizing. Visit HowStuffWorks to learn all about shea lotion.
How to Choose the Right Razor Blade
health.howstuffworks.com/skin-care/beauty/hair-removal/choose-the-right-razor-blade.htm
Want to know how to choose the right razor blade? Visit HowStuffWorks to learn how to choose the right razor blade.