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How Fire Engines Work
science.howstuffworks.com/transport/engines-equipment/fire-engine.htm
We see them all the time, but do you ever think about everything these machines do? A fire engine is a combination personnel carrier, tool box and water tanker. Learn all about this amazing 3-in-1 machine.
Can I Make My Own Ethanol?
auto.howstuffworks.com/fuel-efficiency/fuel-consumption/make-your-own-ethanol.htm
Can I make my own ethanol? Read this article to find out the answer to the question, can I make my own ethanol?
What is gray water, and can it solve the global water crisis?
home.howstuffworks.com/green-living/gray-water.htm
Gray water is all of the wastewater that comes from your washer, sinks, bathtub or shower. Learn about gray water and how gray water can be recycled.
How to Tap a Keg
home.howstuffworks.com/beer-keg.htm
It's the centerpiece of many festive occasions. It keeps beer fresh and makes it portable. So how is it designed and manufactured? And where does it go when its party days are over?
Would you pay $55 for bottled water?
money.howstuffworks.com/bling-water.htm
Bling H2O is a brand of luxury bottled water that costs over 50 dollars per bottle. Learn about Bling H2O and find out why Bling H2O is so expensive.
5 Green Methods of Transporting Goods
science.howstuffworks.com/environmental/green-science/5-green-methods-transporting-goods.htm
The transportation sector is the second largest producer of carbon dioxide emissions is the U.S. Is it possible to reduce emissions without stiffing the importing and exporting of goods? You'll discover the answer in this article.
How will plug-in hybrids affect the environment?
auto.howstuffworks.com/car-models/plug-in-hybrids/plug-in-hybrids-affect-the-environment.htm
How will plug-in hybrids affect the environment? Learn how plug-in hybrids could affect the environment at HowStuffWorks.
How Does Oil Recycling Work?
auto.howstuffworks.com/under-the-hood/vehicle-maintenance/oil-recycling.htm
How does oil recycling work? Keep reading to learn how to recycle oil and discover the environmental impacts of oil drilling.
How Toilets Work
home.howstuffworks.com/toilet.htm
The toilet. The john. The loo. The commode. The porcelain throne. No matter what you call it, there's no doubt it's a true technological marvel. Look beyond the commonplace bowl and see what a sophisticated water-handling system your toilet is.
How Much Do You Know About Horses?
play.howstuffworks.com/quiz/how-much-do-you-know-horses
Whether you ride horses or have always just admired them, you have to admit that horses are exceptional animals. Beautiful, majestic and powerful, horses are a big part of our history. In this quiz, we're going to explore some fun facts about these remarkable creatures.