The age of origin of the Homo lineage is thought to have fallen between 2.5 and 3.0 mya. However, William Kimbel (Arizona State Univ) argues in this talk that recent fossil and stone tool discoveries call for a new evaluation of factors involved in the origin and the early evolution of Homo. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Science] [Show ID: 30638]