In My Green Manifesto, David Gessner embarks on a rough-and-tumble journey down Boston's Charles River, searching for the soul of a new environmentalism. With a tragically leaky canoe, a broken cell phone, a cooler of beer, and environmental planner Dan Driscoll in tow, Gessner grapples with the stereotype of the environmentalist as an overzealous, puritanical mess. But as Dan recounts his own story of transforming the famously...