Nicolas P. Retsinas is director of Harvard University's Joint Center for Housing Studies and a Senior Lecturer in Real Estate at the Harvard Business School. Eric S. Belsky is managing director of the Joint Center for Housing Studies and a lecturer in the Harvard Graduate School of Design. Anthony Downs is a senior fellow in the Economic Studies Program at the Brookings Institution. His specialties are housing, real estate, real estate finance, metropolitan planning, demographics, and transportation. His books include New Visions for Metropolitan America (Brookings/Lincoln Institute for Land Policy, 1994), and Still Stuck in Traffic: Coping with Peak-Hour Traffic Congestion (Brookings, 2004).