David M. Wilkinson is Reader in Environmental Science in the School of Biological and Earth Sciences at Liverpool John Moores University. He has wide interests within the environmental and biological sciences, where much of his research is on theoretical topics within evolutionary ecology, biogeography and Earth systems science. In addition he is involved in more empirical research on soil protozoa, environmental archaeology and the history of science. His teaching covers a diverse range of topics from the history of geology to forensic archaeology, but centres on various aspects of eco...