"Denver’s wildly successful incentive program isn’t just helping residents buy greener rides — it’s building an army of bike lane advocates."

"A federal judge in Nevada on Monday upheld the federal government’s approval of the largest proposed lithium mine in the nation, dismissing arguments that the Thacker Pass project would degrade nearby aquifers, air quality, and habitat for the imperiled greater sage grouse."

"When plague struck black-tailed prairie dogs in the Thunder Basin National Grassland in Wyoming in 2017, a huge die-off followed. It spelled disaster for the burrowing rodents. But for researchers, it provided an opportunity for a “natural experiment” in the consequences of a single species’ collapse."

"The world remained firmly in warming’s grip last year, with extreme summer temperatures in Europe, China and elsewhere contributing to 2022 being the fifth-hottest year on record, European climate researchers said on Tuesday."

"Without dramatic cuts to water consumption, Utah’s Great Salt Lake is on track to disappear within five years, a dire new report warns, imperiling ecosystems and exposing millions of people to toxic dust from the drying lake bed."

"Colorado could be less than a year away from the state’s first relocation of gray wolves to parts of the Western Slope, as required by a ballot initiative passed by voters in 2020."

"The Environmental Protection Agency is investigating whether Colorado’s regulation of air pollution from industrial facilities discriminates against Hispanic residents and other racial minorities, according to a letter released Wednesday."