Michael Grubb is Visiting Professor, Climate Change and Energy Policy, at Imperial College, London, and Senior Research Associate at the Department of Applied Economics, Cambridge University. He is also half-time Associated Director of Policy at the UK Carbon Trust. He has been a Lead Author for several reports of the Intergovernmental Panel on Climate Change (IPCC) addressing the economic, technological and social aspects of limiting greenhouse gas emissions and has advised a number of governments, companies and international studies on climate change policy. He is editor-in-chief of the journal Climate Policy and is on the editorial board of Energy Policy. His contact email is: michael.grubb@imperial.ac.uk