Well known for his column in The New Yorker, Lewis Mumford is widely regarded as the foremost urban critic of this century. Through historical and theoretical perspectives, author Mark Luccarelli traces the development of Mumford's thought on regional planning focusing on his pioneering concept of an ecologically-based region and shows how he attempted to turn his ideas into reality through the Regional Planning Association of America (RPAA). This informative book also demonstrates how Mumford's ideas remain extraordinarily relevant and valuable to today's urban problems.