Harald Bodenschatz, *1946, town planner and social scientist; from 1995 to 2011 University Professor for the Sociology of Planning and Architecture, Technical University (TU), Berlin; now Associate Professor at the Center for Metropolitan Studies, TU Berlin, and member of the Bauhaus Institute for the History and Theory of Architecture and Planning, Bauhaus-Universitt Weimar. Max Welch Guerra, *1956, political and planning scientist; since 2003 University Professor for Spatial Planning and Spatial Research, Bauhaus-Universitt Weimar; director of the Bauhaus Institute for the History and Theory of Architecture and Planning; head of the degree programmes B.Sc. and M.Sc. in Urbanism. Project director of the international research association urbanHist (History of European Urbanism in the 20th Century).