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Earth As Art Gallery #2

<< 11/12 < > The Optimist. On the edge of the Kalahari Desert in Namibia, sand dunes are encroaching onto once-fertile lands in the north. Healthy vegetation appears red in this image; in the center, notice the lone red dot. It is the result of a center-pivot irrigation system, evidence that at least one optimistic farmer continues to work the fields despite the approaching sand. Credits: U.S. Department of the Interior U.S. Geological Survey

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