Blog and Newsletters

Hi all — quick update from the Political Committee! We’ve been hard at work building new tools and processes to help us evaluate candidates faster and more effectively than ever. This fall, we’ll put them into action in Denver Metro Network’s...

On July 29, 2025, Sierra Club joined a settlement submitted to the Colorado Public Utilities Commission that would approve a $48.7 million non-pipe alternative (“NPA”) project on Xcel Energy’s system—the largest NPA ever proposed in the United...

Rollbacks pose significant threat to public health, climate, and economic progress

The Climate Crisis Demands Bold Leadership. In 2025, Colorado Lawmakers Fell Short.

Howdy! I'm Mark Van Akkeren, your new Political Committee chair. First, a big THANK YOU to Duncan LeBlond for his excellent stewardship of this committee over the past couple of years—and best wishes to him as he continues his advocacy work in...

I still remember the first time I truly felt the power of nature–do you?It was August 2009, on a hike to Emerald Lake in Rocky Mountain National Park. It was at this moment that I realized how deeply connected we are to the world around us and to...

“How do I create a will?” If you’ve asked this question, you’re not alone. Creating a will or other estate planning documents can feel daunting. As a Sierran, you know: there is power in a plan. When we want to protect old growth forests, or...

With the 2025 Legislative Session ending earlier this month, it’s important to take stock of our efforts and put them into context. This was a unique and challenging legislative year for several reasons. Donald Trump’s election changed the tone and...

Sierra Club Senior Climate and Energy Organizer, Sarah Tresedder, and volunteer Rebecca Deleon-Hutton host a workshop for participants during the Colorado Youth Climate Summit.

In 2022, the Sierra Club CO Chapter championed the passage of a landmark law requiring full disclosure of the chemicals used in oil and gas operations. The legislation was prompted by years of scientific findings showing the use of toxic and cancer-...