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Top 5 Green Insulation Options
home.howstuffworks.com/home-improvement/construction/green/5-green-insulation-options.htm
Homeowners are now beginning to discover the color of home insulation isn't just pink. It can also be green -- as in eco-friendly. But does it cost an arm and a leg?
The Cake Is a ___: Can You Fill In the Blank on These "Portal" Quotes?
play.howstuffworks.com/quiz/the-cake-is-a-___-can-you-fill-in-the-blank-on-these-portal-quotes
"A complimentary escape hatch will open in 3, 2, 1." Just kidding. We're not going to let you off that easy, because if you want to escape through this "Portal" quiz, then you'll have to fill in a few blanks first!
How Tooth-in-eye Surgery Works
health.howstuffworks.com/medicine/surgeries-procedures/tooth-in-eye-surgery.htm
It's possible to restore vision -- with a tooth. Find out about tooth-in-eye surgery at HowStuffWorks.
10 Times Humanity Found the Answer (and Then Forgot)
history.howstuffworks.com/10-times-humanity-found-answer-and-then-forgot.htm
Could humanity be even farther ahead if we hadn't forgotten what we'd learned centuries ago? Learn about 10 times we forgot answers at HowStuffWorks.
How Wood Pellet Stoves Work
home.howstuffworks.com/wood-pellet-stove.htm
Wood pellet stoves are more cost-effective and environmentally friendly than a heater or a fireplace. Learn more about wood pellet stoves.
How to Build a Dog House
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Building a dog house can be difficult if you don't know the proper steps to take. Learn about how to build a dog house at HowStuffWorks.
How Solar Water Heaters Work
science.howstuffworks.com/environmental/green-tech/sustainable/solar-water-heater.htm
Solar water heaters could help cut your utility bills. Visit HowStuffWorks to learn about solar water heaters.
How Robot Armies Will Work
science.howstuffworks.com/robot-armies.htm
Robot armies could soon account for up to one third of all vehicles currently in service. Learn about robot armies and robot army development.
How Carbon Tax Works
science.howstuffworks.com/environmental/green-science/carbon-tax.htm
A carbon tax is one of two market-based options that focus on lowering harmful emissions. Learn about the carbon tax and how a carbon tax can lower emissions.
How Acid Rain Works
science.howstuffworks.com/nature/climate-weather/atmospheric/acid-rain.htm
Acid rain is caused by emissions of sulfur dioxide and nitrogen oxides from power plants, cars and factories. Find out how acid rain is produced.