Walking on Two Feet: The Evolution of Bipedalism

from Steven Mithen’s The Prehistory of the Mind: The evolution of bipedalism had begun by 3.5 million years ago. Evidence for this is found in the anatomy of A. afarensis, and, more dramatically, by the line of australopithecine footprints preserved at Laetoli in Tanzania. The most likely selective pressure causing the evolution of bipedalism was […]

How Picking Fleas Led to the Evolution of Language

From Steven Mithen’s Prehistory of the Mind: The anthropologist Robin Dunbar looked at the size of the brain of H. habilis [2.1 – 1.5 million years ago] from a very different perspective. Recall that we have already referred to his work regarding the relationship between brain size and group size—living within a larger group requires more […]