Career

He was a leader of the Global Ecovillage Network Europe (1995-1999), Director of the Permaculture Institute for Europe (1984-1989), and Vice President of the Berlin Institute of Technology (1975-1978). He has been Professor of Architecture at the Technology Union Berlin since 1972. They live in the ecovillage of Lebensgarten in Steyerberg, Lower Saxony, Germany.