Featured Article: How Waterfalls Work
Some people like to honeymoon at Niagara Falls, while others go over the falls in a barrel. How do these geological formations come to be? See more »
terms library
Want to know what an aclinic line or natural bridge is? Discover some of the most common terms used in study of geography.
Are sand dunes really alive?
Sand dunes belch, moan and hum. They roll across the desert, seeking out new locales. You might even say they breed. It's no wonder people call these giant sand formations lifelike.
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How did the supercontinent Pangaea become seven separate continents?
Like the members of an ill-fated rock group, the seven continents struck out on their own hundreds of millions of years ago. But what caused the breakup? And is a reunion tour in the works?
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How do I start my own country?
Wishing you could start your own country? There's good news and bad news. The bad news is that it will take a lot of hard work to make this dream come true. But the good news is that there's actually a procedure in place to make it happen.
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How Naming the Continents Works
Continents aren't the unchanging, universally recognized land masses of our school studies. But they do help us make sense of our world. How did they get their names?
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How Sand Dunes Work
Did you know that sand dunes can sing? And, their artistic curves certainly make for a gorgeous photograph. In fact, you might call the sand dune the diva of the desert.
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How the Ice Age Worked
Much of the ice has melted, and the woolly mammoths are long gone. But could we still be in an ice age and headed for another?
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How Urban Sprawl Works
The word "sprawl" can have a positive connotation, like sprawling on your couch after a hard day at the office. But environmentalists and conservationists aren't too fond of the term "urban sprawl." Are white picket fences an adequate trade-off for the displacement of wildlife?
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How Waterfalls Work
Some people like to honeymoon at Niagara Falls, while others go over the falls in a barrel. How do these geological formations come to be?
See more »
Why don't we live underground?
Potatoes. Moles. Time capsules. Some things just belong underground and thrive in that dark, airless environment. Humans have long preferred topsoil to the subterranean, but some designers are looking to change that.
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World Geography Quiz
There's no need to do any globetrotting to explore the regions of the Earth and to test your knowledge about the far corners of the world: You can do it with our geography quiz.
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City
City, a large or important town. Cities are the commercial, industrial, financial, political, and cultural centers of a nation.
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Desert
Desert, an arid region with little or no vegetation. The word comes from a Latin word meaning abandoned or forsaken, signifying lack of human habitation.
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Geography
, the branch of knowledge that deals with the earth, its life, and its resources.
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Map
Map, a drawing or other graphic representation of all or part of the earth's surface.
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Middle East
Middle East, a term for an indefinite region centered on southwest Asia and extending into North Africa.
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River
Riverb, a sizable stream of freshwater flowing through a natural channel in the land.
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World
World, the earth with its inhabitants and their activities. Earth and world have somewhat the same meaning, but as used here earth refers to the planet while world refers to the earth as lived on and used by humankind.
See more »A.H. Guyot
Guyot, Arnold Henry (1807–1884), a Swiss-American geographer and geologist. Guyot wrote textbooks that helped popularize geology and geography in the United States.
See more »Aclinic Line
Aclinic Line, or Magnetic Equator, an imaginary, irregular line circling the earth near the geographical equator.
See more »Altitude
Altitude, the height or elevation of a point or object above a given reference level.
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