The renowned urban scholar, Sir Peter Hall, is the author of more than 30 books, including "The World Cities," "Cities Tomorrow," and "Cities in Civilization."Ê He is a Professor of Planning at University Colelge, London and Professor Emeritus of City and Regional Planning at the University of California at Berkeley.Ê

Peter recently spent four days at the Aspen Institute leading discussions among American civic leaders and other scholars on what makes a good city.

Listen Sunday, September 23, 9 a.m. Central on the WKNO-FM Stations or again Tuesday, September 25 at 9 a.m.Ê Or listen anytime on the Web in the "Smart City"