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How Does a Heat Pump Work?
home.howstuffworks.com/home-improvement/heating-and-cooling/heat-pump.htm
Heat pumps use a small amount of energy to move heat from one place to another. They serve a dual purpose; they can use that heat transfer to cool a home as well. But is one right for your home?
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 Most Deceptive PR Campaigns in History
money.howstuffworks.com/10-deceptive-pr-campaigns-in-history.htm
Diamonds are rare? Not really. They became an engagement ring staple, thanks to a clever, if deceptive, public relations campaign.
How Global Warming Works
science.howstuffworks.com/environmental/green-science/global-warming.htm
Global warming is becoming an increasingly important issue. Find out what causes global warming and learn how we can decrease the effects of global warming.
Ultimate Guide to Concrete Countertops
home.howstuffworks.com/home-improvement/remodeling/concrete-countertop.htm
Concrete countertops are gaining in popularity as a replacement for granite countertops. Find out why concrete countertops are being used more and more.
How to Allergy-Proof Your Home
Keeping an allergen-free house is not an impossibility. Learn more about allergy-proofing your home.