LA Times: As an environmentalist, Michael Brune made a name for himself by spearheading an unrelenting and ultimately successful campaign to pressure Home Depot into phasing out sales of lumber from endangered rain forests. Now, Brune is taking the reins of the Sierra Club at a time when much of the movement has turned away from confrontational tactics in favor of compromise, especially on the push for sweeping new federal legislation on climate change. Brune, who took on Home Depot …