This past week, I returned from a remarkable trip along the Omo River in the remote southwestern ... the ancient heartbeat of the valley that has dictated the economic and social values of the ...

From the central highlands the river flows wide ... in which boys run along the backs of cattle to prove they are ready for manhood. Today the Omo Valley is a destination for wealthy tourists ...

A prehistoric site near Lake Turkana, the lower valley of the Omo is renowned the world over. The discovery of many fossils there, especially Homo gracilis, has been of fundamental importance in the ...