"The Sierra Club is an environmental organization in the United States. It was founded on May 28, 1892, in San Francisco, California, by the Scottish-American preservationist John Muir, who became its first president.Traditionally associated with the progressive movement, the club was one of the first large-scale environmental preservation organizations in the world, and currently engages in lobbying politicians to promote green policies."@en . "Sierra Club"@en . . . . . . . . . . . . "9.7891373E7"^^ . "2.4 million (self-reported)"@en . "Explore, enjoy and protect the planet." . .