A Message from Our Conservation Chair
June 18, 2026
What is your favorite place in Colorado?Mine is the Indian Peaks Wilderness. I love the spectacular views, the distinct wildness, and the fact that it is protected as a wilderness area, meaning its incredible ecosystems are largely undisturbed...
Transportation in Colorado: Planning for Failure
June 8, 2026
The Colorado Department of Transportation’s (CDOT) new ten-year plan dramatically favors highway expansions over transit and multimodal improvements. This failure to address traffic congestion, the economy, government finances, climate emissions and...
Western Colorado Climate Resilience - What is it?
June 4, 2026
The ocean may be far away from the Southern Rockies, but there is a growing likelihood that a Super El Niño in the warming Pacific could be impacting the weather here in Colorado later this year. Average air temperatures have been rising over the...
Colorado Can’t Afford the Water Needed for New Data Centers
May 14, 2026
Colorado is already suffering water stress and the AI data centers popping up across the country are incredibly thirsty. Before we jump into building them in Colorado, we need to plan for what that actually means. Direct water use by US data centers...
Notes from the Western Slope
April 16, 2026
The Western Slope Group of the Sierra Club is situated right in the area of Colorado experiencing its worst drought ever recorded. What are the visible signs? Out hiking the local trails, pinyon pines are dying, probably from a combination of...
A Note from Our Director
March 18, 2026
At critical moments in time, you’ve stepped up so that together, we can defend Coloradans’ rights to clean air and clean energy, and defend our public lands and the safety of our communities. This is one of those moments. I’m asking you to take...
New Longmont Inspiring Connections Outdoors Program Needs Volunteers
January 16, 2026
Imagine a childhood without nature. For far too many kids (and their families!) the Rocky Mountains are just a distant view, not a playground. If you live in the Longmont or Boulder area, you can help change that! Boulder Valley Inspiring...
Stalemate on the Colorado River
December 19, 2025
Due to overuse and climate change, the Colorado River is at a crossroads. A new management plan for the river is being drafted and the Sierra Club Colorado River Sub-Team is very engaged. We will be submitting comments on the Final EIS when it...
Remembering Jean Smith
December 18, 2025
The Pikes Peak Group notes with sadness the passing of Jean Smith, one of the Colorado Sierra Club Chapter’s most active and ardent members. Together with her late husband Art, Jean was a mainstay of the Enos Mills Group of Sierra Club in the...
A Message from our Director
December 18, 2025
Whew. How have you felt this year?For me, every day has felt like the ground is shaking underneath me. It is hard to feel secure when we have seen attacks on our environment and our communities day after day. We’ve seen our opposition throw out the...
