What distinguishes the Sierra Club from most other environmental organizations is the grassroots nature of its structure. Setting he policies of the Club is the volunteer Board of Directors elected by the general membership. Responsible for implementing those policies and serving as the national spokesperson of the Sierra Club is the Executive Director. Carl Pope has served in this post since 1992, and is now being replaced by 38-year old Michael Brune.
Brune’s first environmental job was as an organizer for Greenpeace. After four years, he joined the Coastal Rainforest Coalition, an organization since renamed ForestEthics. In 1998, Brune joined Rainforest Action Network, where he has served the last seven years as executive director. He is the author of “Coming Clean — Breaking America’s Addiction to Oil and Coal“ (Sierra Club Books, 2008) and blogs regularly for the Huffington Post, SolveClimate, and Daily Kos.