Resting Bushman, Tsumkwe, Namibia, 2001
Photograph by Chris Johns
Bushmen, like this hunter resting in Tsumkwe, Namibia, have had a key advantage over other early societies: their ability to survive without surface water. They know where to find liquid-bearing melons and tubers. They also bury ostrich eggs filled with water during the wet season and recover them later, during the dry. This arcane knowledge allows the Bushmen to live where others could not.
