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10 Innovations in Water Purification
science.howstuffworks.com/environmental/green-tech/sustainable/10-innovations-water-purification.htm
As far back as 1500 B.C.E., people were trying to purify water to make it drinkable. And we're still at it. Today inventors use tools as simple as clay and as sophisticated as carbon nanotubes to bring clean water to the world.
10 People You Probably Didn't Know Were Black
people.howstuffworks.com/culture-traditions/genealogy/10-people-you-didnt-know-were-black.htm
Some people don't appear to be Black. Learn about 10 people you probably didn't know were Black in this list from HowStuffWorks.
How the Nest Learning Thermostat Works
home.howstuffworks.com/nest-learning-thermostat.htm
What if your thermostat could gather information about your climate and lifestyle, and then program itself to maximize your comfort and save energy? The Nest aims to do just that, but is it worth the cost?
10 Press Exposés That Made a Difference
people.howstuffworks.com/10-press-exposes-that-made-difference.htm
Journalists have brought to national attention lots of issues that would otherwise remain hidden. Learn about some of them at HowStuffWorks.
How Free-Range Parenting Works
lifestyle.howstuffworks.com/family/parenting/parenting-tips/free-range-parenting.htm
HowStuffWorks learns about the free-range parenting philosophy and talks to the movement's founder Lenore Skenazy.
How to Conserve Energy at Home
home.howstuffworks.com/green-living/how-to-conserve-energy-at-home.htm
What is "energy"? Where does it come from? How do we pay for it? Learn the answers to these questions, and find out how to live more efficiently in your home.
How Restaurant Pagers Work
electronics.howstuffworks.com/everyday-tech/restaurant-pager.htm
You've probably used a restaurant pager, but have you taken one apart? We have -- see how a restaurant pager works.
What Makes Glass Transparent?
science.howstuffworks.com/question404.htm
What makes glass transparent? Learn how liquid and gas molecules determine whether you can see straight through things.
1969 Chevrolet Camaro ZL1
musclecars.howstuffworks.com/classic-muscle-cars/1969-chevrolet-camaro-zl1.htm
Fast, rare, and costly, the 1969 Chevrolet Camaro ZL1 set its own muscle car standards. This profile includes photos and specifications.
How to Remove Crayon Stains
home.howstuffworks.com/how-to-remove-crayon-stains.htm
Crayon stains are a lot more fun to make than to get out. It's not child's play to remove these stubborn stains, but it can be done. Learn to erase crayon stains.