TEXT: In this photo taken Sunday  Aug. 11 2013, tourists walk the dunes of Sossuslvei in Southern Namibia. Desert tourism attracts tens of thousands of tourists a year in this Southern African country of just over two millions. Further North,  An estimated 778,000 Namibians, which equates to a third of the country's population , are either severely or moderately food insecure due to the worst drought in years. (AP Photo/Jerome Delay)