Arsuaga is a Palaeoanthropologist and Professor of Human Palaeontology in Madrid, Visiting Professor at University College, London, and co-director of excavations at Sierra de Atapuerca (a World Heritage Site). Dr. Arsuaga's work there and the discovery of Homo antecessor has transformed the history of human evolution and won him the Premio Principe de Asturias 1997. He was elected to the National Academy of Sciences (U.S.) in 2002.