Sierra Club - Advancement

The Sierra Club is the most enduring and influential grassroots environmental organization in the United States. We amplify the power of our millions of members and supporters to defend everyone’s right to a healthy world. 

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.