A newer dating technique using cosmogenic isotopes finds Australopithecus remains from the Sterkfontein caves to be about 1 million years older than previous estimates, potentially changing scientists’ understanding of humanity’s origins.

Taieb recognized the potential importance of the Hadar Formation, where remains of the hominin Australopithecus afarensis were found only a few years later.

Impressions that ancient brains left in fossilized skulls reveal that the first human ancestors to migrate out of Africa had much more primitive brains than previously thought.

Researchers in Ethiopia unearth a previously unknown species of hominin, which roamed Africa at the same time as “Lucy.”