Early humans adapted to major environmental change in 'Cradle of Mankind' 2 million years ago

By Ashley Strickland, CNN

Updated 1133 GMT (1933 HKT) January 8, 2021

This photo captures the Ewass Oldupa archeological site in the Oldupai Gorge, Tanzania. Stone tools that date back 2 million years ago were recently uncovered at the site.
Photos: Ancient finds
This photo captures the Ewass Oldupa archeological site in the Oldupai Gorge, Tanzania. Stone tools that date back 2 million years ago were recently uncovered at the site.
Hide Caption
1 of 80
This image shows the Cook House (right) and the Earthwatch roundhouse reconstructions (left) prior to their dismantling and excavation at the Castell Henllys Iron Age site in Wales.
Photos: Ancient finds
This image shows the Cook House (right) and the Earthwatch roundhouse reconstructions (left) prior to their dismantling and excavation at the Castell Henllys Iron Age site in Wales.
Hide Caption
2 of 80