Start Date: End Date: Published Date Data Date
IJsselmeer, Netherlands
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Published August 3, 2008
Beginning in 1932, Dutch engineers completed a dike across the Zuiderzee to create a freshwater lake. Engineers later used pumps to drain water from the area, creating expanses of usable land known as polders. These images show changes in the land cover in one such polder between 1980 and 2007.
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Urbanization of Ouagadougou, Burkina Faso
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Published June 29, 2008
In western Africa, just south of the Sahara Desert, lies the landlocked nation of Burkina Faso. The nation experienced a 200 percent increase in urban population between 1975 and 2000. Much of that growth occurred in the capital city of Ouagadougou: Between 1960 and 1993, Ouagadougou experienced a 14-fold increase in area.
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Porto Primavera Reservoir, Brazil
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Published April 27, 2008
Brazil’s Porto Primavera Dam sits on the Paraná River, 28 kilometers (17 miles) upstream from the confluence of the Paranapanema and Paraná Rivers. Constructed to provide hydroelectricity, this dam created the Porto Primavera Reservoir
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Burn Scar on Santa Catalina Island
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Published November 11, 2007
On May 10, 2007, a large human-caused fire broke out near the island’s only city, Avalon. Before it was contained five days later, the fire scorched 4,800 acres.
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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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