Christian Pfister (left) is Professor Emeritus of Economic, Social and Environmental History at the University of Bern, Switzerland. He was founding
president of the European Society for Environmental History (ESEH). Heinz Wanner is Professor Emeritus of Geography and Climatology. He was co-chair of the international Past Global Changes (PAGES) project and a member of the UN Intergovernmental Panel on Climate Change (IPCC). Both scientists work at the renowned Oeschger Centre for Climate Change Research at the University of Bern.