Walking with Cavemen

Journeying millions of years into the past, Winston goes on the trail of Australopithecus afarensis, an ape who took the first step towards modern man.

Two species of ape-man feature in the second of Professor Robert Winston's series on human ancestry: the gentle, root-munching Paranthropus boisei and the enterprising scavenger Homo habilis. Who had the best strategy for survival in their prehistoric world?