He regularly covers science, technology, environment, and development issues in Germany, Europe, and overseas. From 1985 to 1996, he worked as an editor with the national daily Die Tageszeitung — taz, Germany's only cooperative-owned newspaper. From 1996 to 1999, he reported from South Africa and wrote a thesis on the transition period after the end of apartheid for his doctorate in African studies. He lectures in journalism at the Bremen University of Applied Sciences and the International Institute for Journalism in Berlin.