Prof. Dr. Stefan Rahmstorf leads the Department of Earth System Analysis at the Potsdam Institute for Climate Impact Research and is Professor of Ocean Physics at the University of Potsdam. He is one of the world’s most renowned climate researchers. He was one of the lead authors of the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC) and is considered one of the leading oceanographers. Rahmstorf is the author or co-author of around 135 scientific publications in international journals, including Nature and Science. He is a sought-after and multi-award-winning climate communicator and is one of the top 5 climate researchers with the most Twitter followers worldwide.