Michael Brune is the executive director of the Sierra Club, an American environmental organization founded by conservationist John Muir in 1892. Brune was appointed to his position as executive director in January, 2010. Wikipedia*
On the C-SPAN Networks:
Michael Brune has four videos in the C-SPAN Video Library; the first appearance was a 2013 Rally. The year with the highest average number of views per program was 2014 with an average of 2,409 views per program. Most common tag: Global Climate Change.