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Hobet-21 Mine, West Virginia
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Published December 23, 2007
This pair of images shows the growth of a mountaintop removal in the headwaters of Mud River in Boone County, West Virginia, between 1987 and 2002.
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Nyamuragira and Nyiragongo
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Published December 10, 2007
In central Africa, in the Democratic Republic of the Congo, sit two volcanoes: Nyiragongo and Nyamuragira. Besides their proximity to Lake Kivu in the south, these volcanoes share the capacity for destruction, each having produced its share of catastrophic eruptions since the early twentieth century. Yet these volcanoes differ markedly from each other, one being a low-profiled structure rising subtly from the plain, and the other sporting steep slopes.
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Mississippi River Delta
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Published October 7, 2007
Time, weather, and human intervention have all shaped the Mississippi Delta in Louisiana, a giant bird’s foot shape protruding into the Gulf of Mexico. The Mississippi River deposits sediment into the ocean, and over 25 years, NASA Landsat satellites observed changes in the delta’s shape.
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Capitol Reef National Park, Utah
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Published October 3, 2007
Sixty million years of erosion have exposed folded layers of rock.
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Three Gorges Dam, China
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Published June 13, 2007
The longest river in Asia, the Yangtze River brings mixed blessings to China. Although it meets the water needs of millions of people, the river regularly overflows its banks. To protect residents and land in the lower Yangtze floodplains, China began construction on the Three Gorges Dam in 1994.
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