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Optimistic Farming #

Optimistic Farming
Image courtesy of USGS., under PD
On the edge of the Kalahari Desert, sand dunes are encroaching onto once-fertile lands in the north. Healthy vegetation appears red in this false color satellite 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.