Detlef Jahn is a professor of comparative politics at the University of Greifswald, Germany, and a permanent fellow of the Kolleg-Forschergruppe 'The Transformative Power of Europe' of the Free University Berlin. He is a board member of the Institute for Climate Protection, Energy and Mobility (IKEM) and for the Sustainable Government Index (SGI) of the Bertelsmann Foundation. He has published in International Organization, the Socio-Economic Review, the European Journal of Political Research, and Weather, Climate and Society (WCAS) of the American Meteorological Society. He is also the author of New Politics in Trade Unions (1993).