“Water to Dust” explores the threat faced by Africa’s largest desert lake, Lake Turkana. Its principal water source, the Omo river, has been dammed in neighboring Ethiopia. If the lake dries up, hundreds of thousands of Kenyans will lose their livelihoods as fishermen. Cattle grazing, previously the main activity of pastoral tribes in the region, is now impossible because of spreading deserts and climate change. Will Kenya allow another Aral Sea disaster to happen?