East Africa, on the border between Kenya and Ethiopia. For centuries, the life of the pastoral nomad tribes inhabiting the area has depended on two major water sources: the Omo river and Lake Turkana. With global warming, however, the tribes' conditions for survival and the landscape morphology have changed dramatically: reduced rainfall and prolonged drought periods have seriously reduced the availability of fresh water, leading to violent conflicts among the local tribes. Evan Abramson documented one of the world's first conflicts caused by climate change.<%YOUTUBE=RjQK6xgloyY%>