Contributor(s): Professor Ruth Mace, Professor Catherine Rowett, Professor Volker Sommer | What does it mean to be human? What are the origins of humanity, and what distinguishes us from non-human animals? Ruth Mace is professor of evolutionary anthropology at University College London. Catherine Rowett is professor of philosophy at the University of East Anglia. Volker Sommer is professor of evolutionary anthropology at University College London.