This document summarizes the biological and cultural evolution of early humans from Australopithecus to Homo Sapiens. It describes the key differences between biological and cultural evolution, then outlines four main categories of hominids - Sahelanthropus, Ardipithecus, Australopithecus, and Homo. Key details are provided on characteristics of Australopithecus species like Afarensis. Homo Habilis and Erectus are introduced as having larger brains and more advanced traits than Australopithecus.