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Will we ever run out of magma?
science.howstuffworks.com/environmental/earth/geophysics/run-out-of-magma.htm
Will we run out of magma, or is there an infinite supply within the Earth's crust? Find out if we will ever run out of magma.
See How Well You Know North American Geography!
play.howstuffworks.com/quiz/see-how-well-you-know-north-american-geography
North America covers more than 9.5 million square miles, which is more than 16% of the planet's land, and almost 5% of its total surface. It's kind of a big deal, so let's see how well you know the geography of the area.
Do You Know What Continents These Landforms Are From?
play.howstuffworks.com/quiz/do-you-know-what-continents-these-landforms-are-from
Landforms are some of the most marvelous wonders the earth has ever produced, but these inspiring wonders differ depending on the environment in which they're found. Take this quiz and see if you can match the landform to the continent where they can be seen!
How the Sierra Club Works
science.howstuffworks.com/environmental/conservation/issues/sierra-club.htm
The Sierra Club protects the environment by lobbying for environmental preservation. Learn more about the Sierra Club conservation efforts.
Can You Name All of These World Heritage Sites?
play.howstuffworks.com/quiz/can-you-name-all-of-these-world-heritage-sites
We only have one Earth, and the easiest way you can show your appreciation for it is by recognizing its brilliance. Some of the world's most endangered animals, oldest cities and rarest land formations are protected in World Heritage Sites around the globe. Put your skills to the test and see if you can recognize them all.
What Is a Flood and Why Is the Surge of Water So Dangerous?
science.howstuffworks.com/nature/natural-disasters/flood.htm
Flooding has claimed more lives than any other natural disaster. Find out how a gentle stream becomes a raging torrent.
Major Rivers Trivia Quiz
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Whether or not you get these questions right, "old man river keeps rolling along!" Do you know as much as you think you do about the world's biggest rivers? Put your knowledge to the test and see how well you do!
Anyone With the Most Basic Geographic Knowledge Should Get 19/26 on This Quiz
Mountains, rivers, country borders ... How well do you know the globe? This quiz will test your knowledge of basic world geography — start scrolling and see if you can get your bearings!
Can You Identify These National Treasures?
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The country is full of distinctly American foods, forests, drinks, parks, celebrities, athletes, products, services and more. We may take them for granted, but they're our national treasures. How many can you name?
The Rise, Fall and Future of Chinatowns in the U.S.
people.howstuffworks.com/culture-traditions/cultural-traditions/chinatowns.htm
There are some 50 Chinatowns in America and hundreds more in other countries. What led to their creation and will they survive into the next century?