This week on Sierra Club Radio: Part 2 of our National Parks Special! 1) Yosemite Park Ranger Shelton Johnson talks about his just-published historical novel, Gloryland, about a Buffalo Soldier in Yosemite at the turn of the last century 2) Leonard Zax, one of the grassroots activists who helped create our newest national park in Paterson, New Jersey 3) Political commentary from Sierra Club Executive Director, Carl Pope.