Photograph by Randy Olson
Driven from his home near Biem by fighting, a Dinka boy seeks shelter among acacia trees six hours' walk away. His family's few remaining animals supply cow's milk and, occasionally, goat meat or beef from animals that die of disease. If the boy keeps up his strength, he may survive. If he becomes weak and malnourished, he will likely contract kala-azar, a parasitic disease that kills many southern Sudanese, who usually have no way to get treatment in the country's war zone. Most of the two million people who have died in Sudan's civil war have been southern civilians who perished from disease and famine.