Whole Earth Catalog Founder, and GBN and Well cofounder Stewart Brand has long been fascinated by cities—how and why they are changing and the long-term implications for civilization. Join Stewart as he explores the nature of the emerging 'City Planet,' a world of megacities largely populated by the young; vibrant communities of squatters that are redefining environments, economies, and social norms; and massive urbanization that could represent a huge opportunity for environmentalists, though most haven't realized it yet.