Founded by legendary conservationist John Muir in 1892, the Sierra Club is now the nation’s largest and most influential grassroots environmental organization — with three million members and supporters. Our successes range from protecting millions of acres of wilderness to helping pass the Clean Air Act, Clean Water Act, and Endangered Species Act. More recently, we’ve made history by leading the charge to move away from the dirty fossil fuels that cause climate disruption and toward a clean energy economy.

Mission Statement:

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.