Holger Hoff was trained as environmental scientist in Germany and the US. He is a senior scientist at the Stockholm Environment Institute (SEI) in Sweden and at the Potsdam Institute for Climate Impact Research (PIK) in Germany. His main research interests are climate adaptation and mitigation, integrated natural resource management and governance (“the nexus”), planetary boundaries and their operationalization, earth system dynamics and teleconnections in the earth system, sustainable production and consumption and spillover effects, integrated Sustainable Development Goal implementation and sustainability transitions. He has worked for various universities, research institutes, think tanks and advisory bodies in Germany, Sweden, the Netherlands and for international programs. His previous positions include director of the Global Water System Program, director of the International Geosphere-Biosphere Program (BAHC project), senior scientist for the International Dialogue on Water and Climate, research analyst for the German Advisory Council on Global Change (WBGU), coordinator of the GLOWA Jordan water and climate project, and researcher at the Forest Research Institute in New Zealand. He is also a scientific advisor to German and Swedish Development Cooperation and a Water Evaluation and Planning (WEAP) scenario planning and decision tool expert.