Susan Wachter is the Richard B. Worley Professor of Financial Management at The Wharton School and Professor of City and Regional Planning at PennDesign. She is the Co-Director of the Penn Institute for Urban Research, along with Eugenie Birch with whom she edited the volume “Growing Greener Cities” (Penn Press, 2008). As Assistant Secretary for Policy Development and Research at HUD from 1998 to 2001, she was responsible for national housing and urban policy. During that time she served as a member of the White House Interagency Taskforce on Livable Cities and directed the Partnership for Advancing Technology in Housing for the development of sustainable design in housing. In addition, Dr. Wachter is the Founder and Director of the Wharton GIS Lab and the Wharton Geospatial Initiative. The author of over 100 articles, she is a past President of the American Real Estate and Urban Economics Association and past Editor of Real Estate Economics.