Colin N. Waters is an Honorary Professor in the Department of Geology at the University of Leicester, and secretary of the Anthropocene Working Group with a central role in coordinating activities of the Working Group members. He recently retired as a Principal Mapping Geologist at the British Geological Survey, where he specialised in geological mapping of the UK and parts of the Sahara Desert, and stratigraphical analysis, principally of the Carboniferous and Anthropocene.