Post-2004, author Shellenberger focuses on the environmental movement's next move

Is the environmental movement dead? Or just suffering some temporary setbacks, as in the recent Senate vote to approve oil drilling in the Arctic National Wildlife Refuge? Where does the movement stand now, and where does it go from here? Michael Shellenberger, co-author of the controversial "Death of Environmentalism," joins OnPoint to discuss the current and future state of the environmental movement.