Andrew L. Dannenberg, M.D., M.P.H., serves as a consultant to and formerly was Team Leader of the Healthy Community Design Initiative in the National Center for Environmental Health at the CDC. He is an affiliate professor at the University of Washington, Seattle. Howard Frumkin, M.D., Dr.P.H., is Dean of the School of Public Health at the University of Washington. Richard J. Jackson, M.D., M.P.H., is Professor and Chair of the Department of Environmental Health Sciences at UCLA. Frumkin and Jackson are coauthors of Urban Sprawl and Public Health.