The average American suburb faces many sustainability challenges, including low-density and auto-centric development. But according to Senior Sustainability Scholar Grady Gammage, Jr., suburban cities are also a source of promise. In his latest book, "The Future of the Suburban City," Gammage takes a fresh look at what it means to be sustainable. He shows that suburbs have a few advantages in an era of climate change, and provides examples of cities that are already making strides toward increased resilience. With these examples, he demonstrates the power of collective action to address the challenges of geography through public policy. The book, developed with support from the Julie Ann Wrigley Global Institute of Sustainability, serves as a realistic yet hopeful story of Phoenix and shows what is possible for any suburban city.