In pursuit of knowledge, the evolution of humanity ranks with the origins of life and the universe. And yet, except when an ...
Fifty years ago, the discovery of a human ancestor "Lucy" generated worldwide attention. NPR's Scott Detrow speaks with paleoanthropologist Zeray Alemseged about the legacy of the discovery.
The thinking of early theorists was that our evolution was a coordinated, linear process. Our ancestors’ brains grew steadily ...