https://www.eenews.net/articles/michael-brunes-next-battle-clean-up-bitcoin/
Michael Brune's next battle: Clean up bitcoin - E&E News by POLITICO
Mar 31, 2022 - The former Sierra Club leader is teaming up with environmentalists and a controversial crypto company to reduce bitcoin's energy use.
michael bruneclean up
https://grist.org/article/2010-11-23-live-chat-with-sierra-clubs-michael-brune/
Live chat with Sierra Club's Michael Brune | Grist
May 2, 2026 - We were all horrified as we watched the catastrophic Deepwater Horizon oil spill unfold. So now what? Champion chatter (and Grist staff writer) David Roberts...
sierra club slive chatmichael brunegrist
https://progressive.org/latest/michael-brune/
Michael Brune - Progressive.org
Apr 22, 2013 - My guest this week is Michael Brune, executive director of the Sierra Club.
michael bruneprogressive