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How Diabetes Affects the Kidneys
health.howstuffworks.com/diseases-conditions/diabetes/how-diabetes-affects-the-kidneys.htm
Diabetic kidney disease is a worry for any diabetes patient. Learn how diabetes affects your kidneys and how it can lead to kidney failure.
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.
How Castles Work
history.howstuffworks.com/historical-figures/castle.htm
Castles played an important role in the staging of conquests and the defending of territories. Learn more about castles and find out how castles were built.
How Hydroponics Works
home.howstuffworks.com/lawn-garden/professional-landscaping/hydroponics.htm
Hydroponics is the practice of growing plants without soil. Learn more about how hydroponics uses water as the nutrients for plants.
10 Ideas for a Green Transportation Infrastructure
science.howstuffworks.com/environmental/green-science/10-ideas-green-transportation.htm
The idea behind a green transportation infrastructure is one that provides opportunities for people to get around their communities using their own power -- such as walking or biking. In this article we 10 ideas for greener transportation.
10 of the World's Ugliest Animals: So Homely They're Cute
animals.howstuffworks.com/animal-facts/ugly-animals.htm
You can't dis a naked mole rat just for being himself, but, really, what animal could be uglier? Well, the world is full of ugly animals and we've got nine other choices for you.
How Frogs Work
animals.howstuffworks.com/amphibians/frog.htm
Frogs come in all shapes and sizes and some of them are highly toxic, like poison dart frogs. Learn about frogs and check out pictures of frogs in this article.
How the Dalai Lama Works
people.howstuffworks.com/dalai-lama.htm
The 14th Dalai Lama is a religious and political leader who stands for compassion and the freedom of Tibet. Learn about the history of the Dalai Lama.
How Relief Wells Work
science.howstuffworks.com/environmental/green-science/relief-well.htm
Relief wells are used to prevent and stop dangerous oil flows. Learn about relief wells and how relief wells are drilled.
How Geysers Work
science.howstuffworks.com/environmental/earth/geophysics/geyser.htm
Geysers are explained in this article. Learn about geysers.