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Why doesn't gasoline burn cleanly?
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/question407.htm
Gasoline doesn't burn cleanly because of the arrangement of its carbon chains. Learn exactly why gasoline doesn't burn cleanly in this explanation.
Alternative Medicines for Cancer
health.howstuffworks.com/wellness/natural-medicine/alternative/alternative-medicines-for-cancer.htm
Alternative medicines for cancer include nutritional therapy, mind/body medicine, and oxygen therapy. Learn to treat cancer with alternative medicine.
Are ice blocks better than air conditioning?
home.howstuffworks.com/green-living/ice-block-ac.htm
Air conditioning with ice blocks is taking root among some of the world's most powerful companies. Learn how air conditioning with ice blocks works.
How Much Air Pollution Comes From Cars?
auto.howstuffworks.com/air-pollution-from-cars.htm
You see it every time smoke billows from your car's exhaust pipe. There's no denying that vehicles are major contributors to air pollution.
Will an air purifier help with your allergies?
An air purifier may help relieve allergy symptoms if used properly. Find out how air purifiers may help with allergies from this article.
Are air fresheners bad for your health?
home.howstuffworks.com/home-improvement/household-safety/air-freshener-dangers.htm
Air freshener dangers? How could something that's simply supposed to freshen the scent in the air be dangerous. Learn about air freshener dangers.
How do I know which cleaning products are the most environmentally friendly?
How do I know which cleaning products are the most environmentally friendly? Learn about environmentally friendly cleaning products here.
What Is Freon and How Does It Work?
home.howstuffworks.com/home-improvement/heating-and-cooling/what-is-air-conditioner-freon.htm
Freon AC is a colorless gas that absorbs heat and humidity. But it's being phased out in the United States, so what does your AC unit use to keep cool?
Are there CO2 emissions from natural gas?
science.howstuffworks.com/environmental/energy/emissions-natural-gas.htm
Until recently, natural gas was thought of as one of the cleanest fossil fuels. Yet new studies say it may be worse for the ozone layer than coal -- a fuel well-known for its harmful emissions.
Summer-grade Versus Winter-grade Fuel
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/summer-fuel1.htm
What's the difference between summer-grade fuel and winter-grade fuel? If summer-grade fuel is so great, why don't we use it year-round?