Clive Gamble is Professor of Geography in the Centre for Quaternary Research at Royal Holloway, University of London. He spent many years at the University of Southampton, where he founded the Centre for the Archaeology of Human Origins. He is the author of many books, including Archaeology, The Basics (Routledge, 2001), and The Palaeolithic Societies of Europe (1999).
Martin Porr is based at the Landesmuseum für Vorgeschichte in Halle, Germany. There he has been involved as a project manager for the high-profile exhibition of the Bronze Age Sky Disc of Nebra, in co-operation with the National Museum of Denmark.