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10 Most Long-lived Empires in History
history.howstuffworks.com/world-history/10-long-lived-empires.htm
Which historical empires lasted the longest? Read about the 10 most long-lived empires in history.
10 Aviation Innovations We'd Be Stuck on the Ground Without
science.howstuffworks.com/transport/flight/modern/10-aviation-innovations.htm
In the world of flight, it's a fine line between flying high and falling fast. Can you name 10 of the innovations that keep planes and their passengers airborne?
How Driverless Car Racing Works
auto.howstuffworks.com/auto-racing/motorsports/driverless-car-racing.htm
With a little more technology tinkering, driverless cars could take over the racetracks. Learn more about these automated wonders at HowStuffWorks.
How Digital Scales Work
electronics.howstuffworks.com/gadgets/fitness/digital-scale.htm
Digital scales are common measuring devices that harness several physical laws. Learn how digital scales weigh everything from peanuts to penguins.
How Millimeter Wave Scanners Work
science.howstuffworks.com/millimeter-wave-scanner.htm
If you've traveled recently, you probably raised your arms above your head and waited for a millimeter wave scanner to do its screening thing. During those 10 seconds or so, did you ever wonder exactly how the device produced your image?
10 Signs You May Be Sleep Deprived
health.howstuffworks.com/mental-health/sleep/disorders/10-signs-you-may-be-sleep-deprived.htm
Are you sleep deprived? About 45 percent of the world's population isn't getting enough sleep. See 10 signs you might be sleep deprived.
Can You Read the Word If We Give It to You Upside Down?
play.howstuffworks.com/quiz/can-you-read-the-word-if-we-give-it-to-you-upside-down
Look, we're not going to swear you're the next Einstein if you ace this upside-down words quiz, but we do promise it's a great way to stretch your brain and get those neurons fired up. And with only 26 letters in the alphabet, how hard can it be to get a perfect score?
How Space Shuttles Work
science.howstuffworks.com/space-shuttle.htm
In its nearly 30-year history, the space shuttle program has seen exhilarating highs and devastating lows. Learn all about the space shuttle program.
How GameCube Works
electronics.howstuffworks.com/gamecube.htm
It's not the best-selling console... or the one with the best buzz... or the one with the most bells and whistles. But it's still one heck of a cool machine. Check out what the GameCube has under the hood.
How Odometers Work
auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/odometer.htm
Mechanical odometers have been counting the miles for centuries. Although they are a dying breed, they are incredibly cool inside. Learn how this simple device tracks distance and find out about digital odometers.