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8 Ingenious Ways to Repurpose Used Coffee Grounds
home.howstuffworks.com/green-living/used-coffee-grounds.htm
There are lots of inventive uses for old coffee grounds, including candle-making, bug prevention and de-icing roads.
What If the Oceans Disappeared?
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People would look underground for water and maybe just stay there to escape the fiery hell on Earth's surface. But could humanity really last without the seas?
How Rain Barrels Work
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Rain barrels are containers designed to trap and store rainwater. Learn more about rain barrels and if one is right for you.
How Recycling Works
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Recycling involves taking something useful and turning it into something new instead of throwing it away. Learn about recycling and the many types of recycling.
What happens to abandoned mines?
science.howstuffworks.com/engineering/structural/abandoned-mine.htm
Abandoned mine shafts may look romantic with their clapboarded entrances and rusting pickaxes, but they can be deadly. So who ensures that these dangerous sites are properly closed up? You may find the answer a little unsettling.
Chernobyl's Elephant's Foot Is a Toxic Mass of Corium
science.howstuffworks.com/chernobyl-elephants-foot.htm
The lava-like material that formed after the Chernobyl nuclear disaster is a deadly example of corium, a hazardous material created only after core meltdowns. Five minutes next to it can kill a human.
What if we ran out of fossil fuels?
science.howstuffworks.com/science-vs-myth/what-if/what-if-ran-out-fossil-fuels.htm
We wouldn't stop requiring power. So how would a turn to alternative energy sources work out for transportation, international trade and our daily diets?
How Street Sweepers Work
auto.howstuffworks.com/street-sweeper.htm
Street sweepers have been around for more than a century keeping our roads clean. Learn the history of street sweepers and what they're like today.
Is there a way to keep floodwaters out of my house?
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Floodwaters can do significant damage to a home. Learn how to keep floodwaters out of the house in case of disaster.
How Gray Water Reclamation Works
science.howstuffworks.com/environmental/green-science/gray-water-reclamation.htm
Gray water reclamation is a developing way to reduce water waste and go green. Find out how gray water reclamation works.