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How Light Sticks Work
science.howstuffworks.com/innovation/everyday-innovations/light-stick.htm
Light sticks produce a mesmerizing neon glow before slowly extinguishing. Learn about light sticks, chemical light sticks and how they work.
How is digital 3-D different from old 3-D movies?
entertainment.howstuffworks.com/digital-3d.htm
Many people remember the weird, headache-inducing colors that were part of old 3-D movies. But in new movies like "Meet the Robinsons," 3-D loses the paper glasses and goes digital.
How Rebus Puzzles Work
entertainment.howstuffworks.com/puzzles/rebus-puzzles.htm
Rebus puzzles are pictograms with hidden meanings to solve. Learn how Rebus puzzles work at HowStuffWorks.
How the Endocrine System Works
health.howstuffworks.com/human-body/systems/endocrine/endocrine-system-ga.htm
The endocrine system comprises a number of glands that produce hormones with a varied array of vital functions. Hormones control or regulate the development or function of structures throughout the body.
What's the Secret Behind the Numbers on the Interstate Signs?
auto.howstuffworks.com/numbers-on-interstate-signs.htm
Why is one road named I-5 while another is I-480? We take a closer look at the digits on those red, white and blue shield-shaped signs.
Everyday Science: Bridge Quiz
play.howstuffworks.com/quiz/bridge-quiz
Chances are, if you've done even the slightest bit of traveling, you've crossed your fair share of bridges. These feats of engineering can span anything from a trickling stream to a raging river. Can you cross the bridge quiz without falling?
How to Build a Murphy Bed
home.howstuffworks.com/home-improvement/how-to-build/how-to-build-murphy-bed.htm
Do you know how to build a murphy bed? Find out how to build a murphy bed in this article from HowStuffWorks.
How to Build a Lighthouse
lifestyle.howstuffworks.com/crafts/home-crafts/how-to-build-lighthouse.htm
Do you how to build a small lighthouse? Find out how to build a small lighthouse in this article from HowStuffWorks.
How Many Famous Formula 1 Drivers Can You Name?
play.howstuffworks.com/quiz/how-many-famous-formula-1-drivers-can-you-name
The fastest men on four wheels! Can you name the most famous drivers to have ever participated in the sport of Formula One?
How Telephones Work
www.howstuffworks.com/telephone.htm
Telephones are one of the most important and useful modern inventions. Learn about telephone operation, creating a telephone network and tones and bandwidth.