On May 28, 1892, the Sierra Club was founded in San Francisco, California, by conservationist John Muir. Muir and others wanted an organization created to "explore, enjoy, and protect the wild places of the earth," especially those in the Sierra Nevada mountain range.
Today, the Sierra Club still works to promote conservation of wildlife and wilderness. In the 1960s, it lobbied to prevent the construction of dams that would flood parts of the Grand Canyon. In the late 20th century, it supported strengthening the Clean Air Act and Clean Water Act. Today, the Sierra Club is one of the most powerful environmental coalitions in the world, with more than a million members.

person who works to preserve natural habitats.

environmental coalition

group of people or organizations who are united in defense of the environment or an environmental issue.

John Muir

(1838-1914) Scottish-American conservationist.

mountain range

series or chain of mountains that are close together.

Sierra Club

U.S. organization that promotes the protection of wildlife and wildlife habitat.


environment that has remained essentially undisturbed by human activity.


organisms living in a natural environment.

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