This lesson consists of two pages of biographical information about conservationist, John Muir. For years John Muir explored mountains, forests, and glaciers, while keeping a journal of his thoughts and observations. From his notes, he wrote newspaper and magazine articles, and also ten books in which he called for the protection of natural environments and natural resources. His influence on two U.S. Presidents and the U.S. Congress led to the establishment of Yosemite National Park, Mount