Lawrence Barham is Professor in the School of Archaeology, Classics and Egyptology at the University of Liverpool. A scholar of the evolution of symbolic behaviours, he is the author of The Middle Stone Age of Zambia and co-author of Human Roots: Africa and Asia in the Middle Pleistocene. Barham serves on the Council of the British Institute in Eastern Africa and is editor of the journal Before Farming: The Archaeology and Anthropology of Hunter-Gatherers.
Peter Mitchell is Professor of African Archaeology at the University of Oxford and Tutor and Fellow in Archaeology at St Hugh's College, Oxford. He is the author of The Archaeology of Southern Africa and African Connections: Archaeological Perspectives on Africa and the Wider World, as well as co-editor of Researching Africa's Past. Mitchell is Honorary Secretary of the British Institute in Eastern Africa and a member of the editorial boards of several leading journals, including Antiquity, World Archaeology and the South African Archaeological Bulletin.