Architect and urban planner based in Berlin. *1974. Educated at Cambridge University and the Architectural Association London. Doctoral thesis "CampCities - Urbanisation of Refugee Camps" (2009). Founding member of the architectural research group ’urban catalyst’ (2003-). Co-initiator of ZwischenPalastNutzung. Lead on consultancies and research projects for German Development Cooperation (GIZ) and United Nations. Curator of "Grenzgeografien", "Liminal Spaces", "Refuge", "Space Time Dignity Rights", "Gwangju Folly II". Chair of International Urbanism at the University of Stuttgart (2010-2013). Chair of Habitat Unit at the Technical University Berlin (from April 2013). Urban Catalyst studio (from 2012).