our work
Climate & Energy
Our voices can influence leaders and transform how industries are powered. Join us in embracing bold, positive, and future-focused solutions to the climate crisis.
Lands, Air, Water & Wildlife
The health of our environment shapes the health of our communities. For over 125 years, Sierra Club members have worked to protect the earth’s vital resources, natural beauty, wild creatures, and scenic landscapes. Learn how you can help.
Politics & Elections
We are dedicated to electing clean air, clean water and climate action champions at all levels of government. Once they’re elected, we must help them defend and pass policies to protect Colorado’s natural resources for present and future generations. Join us!
People & Justice
We’re protecting more than trees. The most vulnerable among us are the first to feel the impacts of the environmental crisis. And we’ll settle for nothing less than a healthy world for all.
Grassroots Action
The Colorado Sierra Club provides a home to volunteer-driven teams building grassroots power by engaging new people, nurturing new leaders, diversifying the movement, and making meaningful progress on conservation goals. We also serve as an incubator for emerging teams, campaigns, and initiatives, some of which grow to become major projects and campaigns within the Sierra Club.
Want to volunteer?