Los Angeles and New York are ever more crammed with domestic and international migrants; Hartford, St. Louis, Gary, Baltimore and Flint are ever lonelier. This pattern of growth in urban supercenters and flight from midland cities is not just an American phenomenon. The pioneering German project "IBA Urban Redevelopment 2010" begins from the premise that our present methods of urban planning will prove inadequate for the long-term demands of shrinking cities. How can new instruments be developed? What disciplines should be involved? The fifth IBA title on this topic presents the current tools...