The following is an excerpt.
We have unearthed more and more ancient human species in recent years. Rather than there being a neat evolutionary line from ape-like ancestor to modern human, we now think there was a lot of interbreeding. A. sediba is just one such ancestor; others may await discovery.
The focus of fieldwork is also shifting. The most famous discoveries come from East Africa, but A. sediba was found in the Malapa cave, north-west of Johannesburg. So southern Africa may be the place to seek insights into our origins. It will take sharp young eyes to spot them.
Read the full article here: Heading south for the new origin of our species