Be a part of America's oldest, largest and most influential grassroots environmental organization. Founded in 1892 by John Muir, the Sierra Club's members and supporters are more than 3,000,000 of your friends and neighbors. Elected volunteer leaders, working with staff, make policy from the local to the national level. The Utah Chapter has 5,500 members. Inspired by nature, we work together to protect our communities and the planet.