Chris Stringer is Britain's foremost expert on human origins and works in the Department of Palaeontology at the Natural History Museum. He also currently directs the Ancient Human Occupation of Britain project, aimed at reconstructing the first detailed history of how and when Britain was occupied by early humans. His previous books include African Exodus: The Origins of Modern Humanity, The Complete World of Human Evolution and most recently, Homo Britannicus, which was shortlisted for the Royal Society Science Book of the Year in 2007.