Michael BruneMichael Brune, executive director of the Sierra ClubPhoto: Sierra Club

Editor’s note: The chat’s now over, but you can replay it in full.

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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 hosted a pre-Thanksgiving chat with Michael Brune, executive director of the Sierra Club and author of Coming Clean: Breaking America’s Addiction to Oil and Coal on Nov. 23, 2010.

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