Jan Zalasiewicz, professor of paleobiology at the University of Leicester, delves into the Anthropocene. Jan Zalasiewicz is Professor of Palaeobiology at the University of Leicester, UK. In early career he was a field geologist and palaeontologist at the British Geological Survey, working to decipher the strata of eastern England and then the mountains of central Wales. Now, he teaches geology and Earth history to undergraduate and postgraduate students, and studies fossil ecosystems and environments across over half a billion years of geological time. Over the last few years he has been involved in helping develop ideas on the Anthropocene, the concept that humans now drive much geology on the surface of Earth, and chairs the Anthropocene Working Group of the Intrnational Commission on Stratigraphy.