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Your search for "clean" returned 4,098 results
How has NASA helped improve our air and water?
science.howstuffworks.com/innovation/nasa-inventions/nasa-improve-air-and-water.htm
How has NASA helped improve our air and water? Visit HowStuffWorks to see how NASA has helped improve our air and water.
Periungual Warts Overview
health.howstuffworks.com/skin-care/problems/medical/periungual-warts.htm
Periungual warts usually form around fingernails and toenails. Learn more about how periungual warts work at HowStuffWorks.
5 Plaque Removers That Really Work
health.howstuffworks.com/wellness/oral-care/products/5-plaque-removers-that-really-work.htm
When hardened plaque builds up on your teeth and turns into tartar, your risk of gum disease increases. Learn about 5 plaque removers that really work.
Biofuels vs. Fossil Fuels
auto.howstuffworks.com/fuel-efficiency/biofuels/biofuel-fossil-fuel.htm
What's the difference between biofuels and fossil fuels? Keep reading to see how biofuels compare to fossil fuels.
How Cyclonic Separation Works
electronics.howstuffworks.com/everyday-tech/cyclonic-separation.htm
Cyclonic separation is a simple process used in many industrial settings. Read how cyclonic separation gets rid of dust and dirt at HowStuffWorks.com.
How to Avoid Bubbles in Your Nail Polish Finish
A buried bubble trapped in your nail polish finish can really mess it up. So how can you fix it?
Water Is Free. Why Do Americans Spend Billions on the Bottled Stuff?
recipes.howstuffworks.com/why-americans-spend-billions-bottled-water.htm
In 2017, bottled water surpassed soda as America's favorite drink and the trend continues. How did water become a multi-billion-dollar business?
Why doesn't tear-free shampoo sting your eyes?
science.howstuffworks.com/science-vs-myth/everyday-myths/tear-free-shampoo-not-sting-eyes.htm
Some say the real reason "no tear" shampoo works is that it has Novocain in it, desensitizing babies to its sting. Fact or urban legend?
How to Repair a Crack in Fiberglass
home.howstuffworks.com/home-improvement/repair/how-to-repair-crack-fiberglass.htm
You recently discovered a crack in some fiberglass, which you'd like to repair. Learn how to repair a crack in fiberglass in this article.
How to Apply Car Window Tint
auto.howstuffworks.com/under-the-hood/vehicle-maintenance/how-to-apply-car-window-tint.htm
Do you know how to apply car window tint? Find out how to apply car window tint in this article from HowStuffWorks.