For much of the year, Yida refugee camp on the border of Sudan and South Sudan is hot, dry, and seemingly barren. (Watch our video to get a glimpse of camp life.) Yida’s 70,000 residents depend almost entirely on the World Food Program (WFP) for nutritional support, and receive rations of sorghum, yellow peas, oil, and salt. This diet has brought many people back from the brink of severe malnutrition. But while the refugees may not be starving, today we are seeing a new challenge emerge: nutrient deficiency.