National Geographic News, Reporting Your World Daily

Tuesday, February 9, 2010

Photo: "Fertilizer Tree" May Revive African Farmlands


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The sun sets on an acacia tree in Tanzania's Serengeti National Park.

The acacia tree species Faidherbia albida could serve as a free source of crop-boosting nitrogen for African farmers that could last generations, experts said in August 2009.

Photograph by Your Shot user Kevin O'Brien