HUMANPAST.NET

Environment                  6 Million BC
Africa
Southwest Asia
Egypt
Indus Valley
China
Europe
South America
Mesoamerica
North America
Other

In General

It is an inescapable fact of genetics that all people alive in the world are genetically related, and that at some point an individual existed whom we all claim as an ancestor. The only points of debate are how long ago that ancesor lived, and where. DNA data suggests all modern humans are genetic descendants of one small inbred group of prehistoric Africans.(18)

Africa

After a major cooling five to six million years ago, when changes in earth's orbit affected global climate, subtropical Africa's warm, moist environment was subject to oscillating cycles of cool, dry and warm, wet weather. Forested areas which proliferated in warm cycles, receded in cool cycles, allowing grasslands to take over until the climate shifted and woodlands returned. The cycles were relatively brief and mild, and had little effect on the evolution of animal species.(1)

Southwest Asia

 

Egypt

 

Indus Valley

 

China

 

Europe

 

South America

 

Mesoamerica

 

North America

 

Other