| 1981 | M.Sc. in theoretical physics, University of Basel, Switzerland. |
| 1985 | Ph.D. in theoretical solid state physics, University of Basel, Switzerland. Title of thesis: “Amorphicity as Spatial Chaos “ (in German). |
| 1981 - 1985 | Research and teaching assistant in theoretical physics at the University of Basel, Switzerland, and Ph.D. dissertation on the application of the theory of chaotic systems to improve the understanding of amporphous solids. |
| 1985 - 2022 | Research scientist at the Swiss Federal Institute of Aquatic Science
and Technology (Eawag), Dübendorf, Switzerland. (2000-2020 head of the department of Systems Analysis, Integrated Assessment and Modelling; 2005-2015 member of the directorate of Eawag.) |
| Since 2022 | Research scientist retired from Eawag |
| 1986 - 2022 | Occasional teaching in courses by Eawag for water professionals about different aspects of water management. |
| 1991 - 2022 | Teaching at the department of Environmental Sciences of the Swiss Federal Institute of Technology (ETH), Zurich, Switzerland in systems analysis and ecological modelling (1991-1995 as lecturer, 1995-2002 as “Privatdozent”, since 2002 as adj. professor). |
| 2009 - 2022 | Eawag Summer School on Environmental Systems Analysis. (Summer school for PhD students and researchers interested in model-based statistical data analysis with an emphasis on Bayesian techniques.) |