Mark Maslin is professor of climatology at University College London. He is currently a Royal Society Industrial Fellow working with Rezatec Ltd, a company he cofounded. He was the former Director of the UCL Environmental Institute and Head of the Department of Geography. He is science advisor to the Global Precious Commodities PLC, Global Cool Foundation, Climatecom Strategies, Steria, Permian Ltd, and Carbon Sense Ltd. Maslin is a leading scientist with particular expertise in past global and regional climatic change and has published over 165 papers in journals such as Science, Nature, and The Lancet. He has also written ten popular books, over fifty popular articles, and appeared on both radio and television. His books include The Cradle of Humanity and The Human Planet, coauthored with Simon Lewis.