When the executive director of the Sierra Club abruptly left late last week, many wondered what was going on behind the scenes at the storied environmental organization. Today, POLITICO’s Zack Colman has some answers, and they get at the core of Sierra Club founder John Muir’s racial legacy and memory. Zack Colman is an energy reporter for POLITICO. Kelsey Tamborrino covers Energy for POLITICO. Raghu Manavalan is an editor for POLITICO Audio. Carlos Prieto is a Politico podcast producer. Jenny Ament is the senior producer of POLITICO audio. Irene Noguchi is the executive producer of POLITICO audio.