In "zeitgeisty. The Echoes of Ecology", the Bunker Ulmenwall e.V. association from Bielefeld invites you to a stage program with readings, live music and moderated historical classifications on critical natural history (s) from 1962 to 2000 from September 2026. At various locations such as Gütersloh, Lüdinghausen and Versmold, four thematic blocks will be dedicated to the origins of environmental protection, ecological utopias, anti-nuclear and climate debates and ecological philosophies. A digital mapping and an audio journey complete the project.