The Hadza are one of the last remaining hunter-gatherer tribes in the world. It's thought they've lived on the same land in northern Tanzania, eating berries, tubers and 30 different mammals for ...

This story appears in the December 2009 issue of National Geographic magazine. "I'm hungry," says Onwas, squatting by his fire, blinking placidly through the smoke. The men beside him murmur in ...