Something incredible is happening right now across the globe. Achieving 100% clean energy is becoming "the new normal" in the fight to solve climate change. This is an exciting time to get involved as technologies are improving and becoming cheaper...

Restoring and protecting clean water in Fountain Creek has been a Sierra Club priority for more than a decade. Fountain Creek is about 75 miles long and is fed by a 927 square mile watershed along Colorado’s central Front Range. It drains south into...

More than a quarter of a century of hard work has begun to pay off as the Army begins destroying the aging chemical weapons stored at the Pueblo Chemical Depot in eastern Pueblo County.

The Sierra Club has been pushing for a thorough cleanup of contaminated soils around the abandoned Colorado Smelter site, including notably parts of the Eilers and Bessemer neighborhoods in Pueblo. The Colorado Smelting Company began operations in...