Cities

S1 E3: Dennis Wilde is the pioneering force behind the South Waterfront project, which is turning a polluted brown field into a flourishing sustainable community; Trey Taylor, puts years of research to the test when he submerges two underwater turbines in the East River in the hopes that it will light up the skyline using renewable energy; and Heather Flores and her band of guerilla gardeners work overnight to beautify blighted urban plots of unused land with local plants and flowers.