Christian Flachsland is Professor of Sustainability at the Hertie School. His research focuses on the design, governance and political economy of climate, energy and sustainability policy. He is also a Research Fellow at the Mercator Research Institute on Global Commons and Climate Change (MCC). Previously, he was Assistant Professor of Climate and Energy Governance at the Hertie School, as well as head of the working group "governance" at the MCC. He was a contributing author to the Fifth Assessment Report on the Mitigation of Climate Change by the Intergovernmental Panel on Climate Change (IPCC). Recently, he co-authored the MCC-PIK Expertise "Optionen für eine CO2-Preisreform" for the German Council of Economic Experts.