Living on Earth host Steve Curwood talks with Michael Shellenberger and Ted Nordhaus, the authors of the controversial essay “The Death of Environmentalism.” Shellenberger and Nordhaus say the environmental movement is outmoded and ineffective and must make way for “new, bold visions”. Sierra Club Executive Director Carl Pope also joins the conversation. Pope disagrees with the authors. He says the environmental movement is diverse and robust.and working hard to meet the challenges of these times.