Mr. Arne Geschke is a Researcher and Lecturer at the University of Sydney with focus on environmental-economic assessment, renewable energy systems, sustainability, and impacts on biodiversity. Previously, he was a Postdoctoral Fellow in the Integrated Sustainability Analysis (ISA) team working on global environmental assessment, identification and quantification of the social impacts of international trade, and input-output analysis. Arne studied Industrial Mathematics in Hamburg, Germany and Bath, UK. After he finished his studies he worked in the car industry in Germany developing mathematical models to simulate engine behaviour.