Search Results | united states department of the interior
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Can You Match the National Park to the U.S. State?
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There's so much more to America than fascinating buildings and elaborate cityscapes. This U.S. national parks quiz showcases nature's outstanding design achievements. Prepare to be wowed by stunning facts and photos!
What is a synfuel?
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What is a synfuel? How could synthetic fuels mitigate the energy crisis? Read about synfuels at HowStuffWorks.
Top 8 Synthetic Fuels
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Different types of synthetic fuels offer some advantages over fossil fuels. Find out about the top synthetic fuels and how they're processed.
Serpent Mound, Ohio: Inside the Archaeological Mystery
science.howstuffworks.com/environmental/earth/archaeology/ohio-serpent-mound.htm
The curves of the Serpent Mound, Ohio state's massive and mysterious geological wonder, line up with the sun during equinoxes and solstices.
How the U.S. Postal Service Works
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The U.S. Postal Service employs about 500,000 people and is responsible for the delivery of mail. Learn more about the United States Postal Service.
How UPS Works
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What does it take UPS to get a package from one door to another? Learn about smart labels and see what happens to your package before it gets to the sort.
How the Cabinet Works
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What is the Cabinet, and how do its members assist the president? Learn about the people involved in the U.S. government's Cabinet.
How to Dispose of Paint
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Are you wondering how to dispose of old paint? Check out this article to learn how to dispose of old paint and alternatives.
How Animal Detectives Work
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Animal detectives work to solve crimes committed against domestic and wild animals. Learn who animal detectives answer to and how you can become one.
What Causes 'New Car Smell'?
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There's nothing quite like the smell of a new car interior. But what really causes that new car smell? Learn all about new car smell at HowStuffWorks.