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How Your Kidneys Work
health.howstuffworks.com/human-body/systems/kidney-urinary/kidney.htm
The kidneys perform several important tasks. Learn about kidney processes and how the kidneys maintain water volume and balance and regulate blood composition.
Pink Mold: The Uninvited Guest in Your Sink
Water just loves to stick around and leave stains behind. Most people have seen mold, but what do you do if your stain is pink?
5 Green NASA Inventions
science.howstuffworks.com/innovation/nasa-inventions/5-green-nasa-inventions.htm
NASA's technological innovations haven't just gotten us to the moon and beyond -- some have also helped make life a little greener here on Earth. What are five surprisingly grounded technologies spearheaded by NASA?
How the SteriPEN Works
electronics.howstuffworks.com/gadgets/travel/steripen.htm
The SteriPEN is a very popular travel gadget. Learn more about the SteriPEN at HowStuffWorks.
Do Pool Pumps Have to Run All the Time?
home.howstuffworks.com/swimming-pool-pumps-run-all-the-time.htm
Nothing is better than chilling in a cool pool on a hot summer day. But how long does your pool pump need to run to keep the water sparkling clean?
How LifeStraw Works
science.howstuffworks.com/environmental/green-tech/remediation/lifestraw.htm
Many of us take clean water for granted, but hundreds of millions of people have no access to it. Luckily, technologies like LifeStraw can help make water safer for individuals and families who desperately need it.
How to Choose Aquarium Equipment
animals.howstuffworks.com/pets/choosing-aquarium-equipment.htm
The best way to learn how to keep a freshwater aquarium is to learn how to choose aquarium equipment. Find an introduction to aquarium equipment here.
How Do Water Softeners Work?
home.howstuffworks.com/question99.htm
A water softener uses sodium to help replace calcium and magnesium ions. Learn about about water softeners and how water softeners treat your water.
Koi Fish: Shining Jewels of the Water Garden
animals.howstuffworks.com/fish/koi-fish.htm
HowStuffWorks takes a look at ornamental koi, the living jewels of water gardens the world over.
Can You Identify All of These Countries in the Americas From an Outline?
play.howstuffworks.com/quiz/can-you-identify-all-of-these-countries-in-the-americas-from-an-outline
What better way to test your facts of the Americas than this quiz? Correctly identify countries of North and South America from their outlines, and we'll offer up superb facts about each nation. Major hint: Most of the destinations will be Latin American, bueno? So choose accordingly! Boa sorte!