http://www.kqed.org/.stream/anon/radio/quest/2010/04/2010-04-26-quest.mp3
The oldest grassroots environmental organization in the U.S. is the Sierra Club and it's undergoing a change in leadership. After 18 years running the organization, Carl Pope has just stepped down as executive director, but he remains involved as ever in his new position as chairman. Andrea Kissack spoke with him about the biggest challenges facing the environmental movement today.