“4.0 is the best yet! If there are planetary heroes, you are top of my list.” –David Orr, Oberlin College on Plan B 4.0: Mobilizing to Save Civilization.
Bloggingheads: Conversation with Lester Brown and David Roberts of Grist
November 12, 2009
Bloggingheads conversation on Plan B 4.0 between Lester Brown and David Roberts of Grist.