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Who Built These Mysterious Concrete Arrows?
history.howstuffworks.com/american-history/who-built-these-mysterious-concrete-arrows.htm
Giant arrows guided American airmail pilots on nighttime routes up until the 1940s. HowStuffWorks takes a look.
Can You Score 27/35 on This Difficult Animal Quiz?
play.howstuffworks.com/quiz/can-you-score-2735-on-this-difficult-animal-quiz
People are strange, and so are animals! There are some that are really weird, and then there are those you consider as ordinary, yet they have their own brand of strangeness in ways you didn't know. See if you can detect these quirky animal kingdom facts in this difficult animal quiz!
How Plasma Cutters Work
home.howstuffworks.com/plasma-cutter.htm
The metal used to construct buildings resists all sorts of damage, making it a very reliable material -- and very difficult to manipulate into the appropriate form. Enter the plasma cutter. Learn all about the amazing device that cuts through metal like a knife through warm butter.
Can You Pass This Esthetician Exam?
play.howstuffworks.com/quiz/can-you-pass-this-esthetician-exam
Being a licensed esthetician is more than just knowing about skin types and the latest beauty products. It's a lot more medical than you may think! Care to take a closer look at what it takes to be an esthetician? Take this quiz!
How Hydrogen Cars Work
auto.howstuffworks.com/fuel-efficiency/hybrid-technology/hydrogen-cars.htm
Hydrogen cars operate differently than conventional cars. Learn more about hydrogen cars at HowStuffWorks.
A Beginner's Guide to Ignition Coil Replacement?
auto.howstuffworks.com/ignition-coil.htm
Your car's ignition coil supplies the engine with the high voltages needed to get the car running. But how do you know if the ignition coil is malfunctioning?
Can You Identify All of These Common Tools Used by Construction Workers?
play.howstuffworks.com/quiz/can-you-identify-all-of-these-common-tools-used-by-construction-workers
If you want to build anything, you need to make sure you have the right tools. And what are the right tools? You tell us! Take the quiz and hit the nail on the head!
Hyperhidrosis Overview
health.howstuffworks.com/skin-care/problems/medical/hyperhidrosis.htm
Hyperhidrosis is the clinical term for excessive sweating. Learn about hyperhidrosis causes and treatments, and how people live with hyperhidrosis.
How the Engine Control Module Works
auto.howstuffworks.com/engine-control-module.htm
Do you know what the engine control module actually controls? Check out this article to learn about ECMs in cars and find out what they do.
Is China Launching Fake Moon a Bright Idea?
science.howstuffworks.com/is-china-launching-fake-moon-bright-idea.htm
China is planning launch a 'fake' moon to provide extra illumination to Chengdu, Sichuan. HowStuffWorks looks at why.