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Where do butterflies get their striking colors?
animals.howstuffworks.com/insects/butterfly-colors.htm
Butterfly color is some of the most striking in nature. Learn how butterfly wings use ordinary color and structural color.
Who designed and built the first hybrid car?
auto.howstuffworks.com/fuel-efficiency/hybrid-technology/first-hybrid-car.htm
The first hybrid car was built much earlier than you might expect. Read up on the history of the first hybrid car models in this article.
Why Do Kangaroos Hop?
animals.howstuffworks.com/mammals/kangaroo-hopping.htm
Kangaroos hop with the help of powerful toes and springy tendons. Learn how kangaroos hop across terrain, and if they're physically able to walk.
Science Projects for Kids: Current Electricity
Get a charge out of these exciting science projects for kids as you discover the world of ion attraction. Begin with these electrifying activities.
How to Choose the Right Razor Blade
health.howstuffworks.com/skin-care/beauty/hair-removal/choose-the-right-razor-blade.htm
Want to know how to choose the right razor blade? Visit HowStuffWorks to learn how to choose the right razor blade.
How can a speed bump harvest electricity?
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/speed-bump-harvest-electricity.htm
How can a speed bump harvest electricity? Read how engineers could potentially get green energy from speed bumps and kinetic plates.
How long do fuel injectors last?
auto.howstuffworks.com/under-the-hood/car-part-longevity/fuel-injectors-last.htm
How long do fuel injectors last? Visit HowStuffWorks to learn how long fuel injectors last.
How 3-in-1 Jackets Work
home.howstuffworks.com/3-in-1-jackets.htm
3-in-1 jackets keep you comfortable year-round. Visit HowStuffWorks to learn all about 3-in-1 jackets.
Why We Love Henry David Thoreau, in 5 Quotes
history.howstuffworks.com/historical-figures/henry-david-thoreau.htm
We may think of Thoreau as the Walden Pond hermit who penned profound books on nature and philosophy. But he was also funny and sociable and valued his friends deeply.
Office Do's and Don'ts: The Workplace Etiquette Quiz
play.howstuffworks.com/quiz/workplace-etiquette-quiz
If you've been in the working world for a while, you might think you have office etiquette down pat. But maybe you should take this quiz to make sure you're not unwittingly offending everyone.