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The Ultimate 3-D Printing Quiz
play.howstuffworks.com/quiz/3-d-printing-quiz
Regular printers are pretty handy, but their up-and-coming cousins, 3-D printers, add a whole new dimension to the printing process. Literally! How much do you know about the fascinating field of 3-D printing? Take this quiz and find out!
How Jackhammers Work
home.howstuffworks.com/jackhammers.htm
You've probably been irritated by jackhammer noise at some point, but have you ever stopped to think about these marvels of concrete-busting power? Without them, demolition would be a whole lot more difficult.
How Pangaea Became 7 Separate Continents
history.howstuffworks.com/world-history/pangaea-supercontinent.htm
The idea of Pangaea comes from Alfred Wegener's hypothesis that the seven continents were once joined as a supercontinent. Learn more about Pangaea.
How the Moon Works
science.howstuffworks.com/moon.htm
The moon is the Earth's only natural satellite and the closest celestial object. Learn about the moon and some of the theories about the moon's origin.
There's a Rhino-shaped Cave in Washington State
science.howstuffworks.com/environmental/earth/geology/rhino-shaped-cave.htm
It's perhaps one of the strangest fossils ever discovered. We'll explain how it came to be 15 million years ago, and how hikers found it in the '30s.
How Geothermal Energy Works
science.howstuffworks.com/environmental/energy/geothermal-energy.htm
Geothermal energy is clean, abundant and renewable. Learn about geothermal energy, geothermal heat pumps and geothermal power plants.
How much energy in a hurricane, a volcano, and an earthquake?
science.howstuffworks.com/environmental/energy/energy-hurricane-volcano-earthquake.htm
Energy has been on everybody's minds lately, probably because our society is in a transition period, trying to move from polluting sources to cleaner ones.
How Deep Impact Works
science.howstuffworks.com/dictionary/astronomy-terms/deep-impact.htm
How do scientists find details about the early days of our solar system? One way is to investigate comets. Find out how the Deep Impact spacecraft fired an impactor into Comet Tempel 1 to get some answers.
How Biofilm Works
science.howstuffworks.com/life/cellular-microscopic/biofilm.htm
Biofilms form when single microorganisms attach to a hydrated surface and undergo a "lifestyle switch." Learn about biofilms in this article.
Can You Pass The Ultimate 1960s Quiz?
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Groovy Baby! Do you have the power to get a perfect score on all things 1960s? Music, fashion, slang, and more! Take the 1960s trivia quiz to see if you're cool or the cooties.