Wildebeest migration: Their paths may lie along the path of prehistoric nomadic herders in east Africa \ THOMAS MUKOYA/ REUTERS

Manure Happens Wildlife Hot Spots in Kenya Arose Where Prehistoric Nomads Camped

Thousands of years ago, nomads set up corrals for their beasts where the Serengeti is today

Global warming is just the latest wrinkle: People have been changing the environment since urban settlement began, archaeologists first discovered in Israel. Now it seems our impact began even earlier. Some...

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