The Sierra Club is an environmental organization founded in 1892 by John Muir. They are "the oldest, largest, and most influential grassroots environmental organization in the United States".
"To explore, enjoy, and protect the wild places of the earth; To practice and promote the responsible use of the earth's ecosystems and resources; To educate and enlist humanity to protect and restore the quality of the natural and human environment; and to use all lawful means to carry out these objectives."
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