After receiving degrees as Dipl.-Biol. (M.S. in Biology) in 1984 and as Dr. rer. nat. (Ph.D. in Biochemistry) in 1987 from the University of Saarland in Saarbrücken for work in protein biochemistry, work as a post-doc at the Biocenter of the Basel University on the molecular biology of key metabolic pathways of the malarial parasite. After 1991 study of economics at the University of Freiburg yielding a degree as Dipl.-Volkswirt (M.A. in Economics) with a thesis about the role of energy in the economic process. Between 1996 and 2001, research on the evolution of social norms and values and their role in the generation of welfare at the Evolutionary Economics Unit of the Max-Planck-Institute for Economics in Jena, yielding a degree as Dr. rer. pol. (Ph.D. in Economics). From 2001 to 2004, work in a project about time strategies in environmental innovation policy at the Energy Systems Unit at the Technical University Berlin. Since October 2004, working at Fraunhofer Institute for Systems and Innovation Research ISI.