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A Comprehensive Guide to the Layers of the Earth
science.howstuffworks.com/layers-earth.htm
Delve into the Earth's layers: crust, mantle, outer core, and inner core. Discover the secrets beneath our feet and the dynamic processes at play.
Why do humans walk on two legs?
animals.howstuffworks.com/mammals/bipedalism.htm
Bipedalism was one of the first features to develop in our human ancestors. Is bipedalism better than being on all fours? Read more about bipedalism.
What is cyberchondria?
science.howstuffworks.com/life/inside-the-mind/human-brain/cyberchondria.htm
Cyberchondria is a plague of the Internet age. But is cyberchondria just the online version of hypochondria or something more? Take a look at cyberchondria.
What are the economic drawbacks of using biofuels?
auto.howstuffworks.com/fuel-efficiency/biofuels/economic-drawbacks-of-using-biofuels.htm
What are the economic drawbacks of using biofuels? Read about the downsides of using biofuels at HowStuffWorks.
Do You Have an Internal Dialogue? Not Everyone Does
science.howstuffworks.com/life/inside-the-mind/human-brain/inner-voice.htm
If you engage in constant self-talk, it may surprise you that some people think in pictures instead or do nothing at all. And the number of people truly having an inner monologue may not be as great as you think.
Is the Dream of Cold Fusion Still a Possibility?
science.howstuffworks.com/environmental/energy/cold-fusion.htm
Though a highly publicized 1989 cold fusion breakthrough was subsequently discredited, research is still being conducted in hopes of future success.
How Diesel Engines Work
auto.howstuffworks.com/diesel.htm
Diesel engines are often more efficient and less expensive to operate than their gasoline alternatives. So why aren't there more diesels on the roads? Well, they have their own issues, too.
How the UPC Code Works
electronics.howstuffworks.com/gadgets/high-tech-gadgets/upc.htm
Nearly every item that you purchase from a grocery store, department store, or mass merchandiser has a UPC code on it somewhere. Ever wondered why? Let's find out how the average UPC code works!
How VO2 Max Works
health.howstuffworks.com/wellness/diet-fitness/exercise/vo2-max.htm
VO2 max is something that every triathlete should know. Visit HowStuffWorks to learn all about VO2 max.
How Smartphones Work
electronics.howstuffworks.com/smartphone.htm
Smartphones blur the line between cell phones and PDAs. Learn the details of smartphones, read cell phones and PDA reviews and see our buying guide.