"This makes me so upset." Hiker disgusted by 'despicable' scene witnessed on popular hiking trail: 'Why do people do things like this?' first appeared on The Cool Down.

The Green Mountain Club’s annual Outdoor Adventure Speaker Series is under way on Thursday nights with speakers who are ...

CU Boulder launched a record 35 startup companies. Bryn Rees, associate vice chancellor for innovation and partnerships, said it’s part of the university’s mission.

Boulder Open Space and Mountain Parks personnel took over the Marshall Mesa Coal Fire Mitigation Project area on Thursday, a ...

The Marshall Mesa Trailhead will now be just a figurative, not literal, hotspot for mountain biking, horseback riding and hiking.

From exploring Arizona canyons to Utah buttes and beyond, our national parks columnist shares the most adventurous Southwest ...

In addition to shelving books, the recently completed North Boulder Library, designed by the New York–based practice WORKac, ...

Family members and friends of Megan Trussell gathered in a parking lot just off Boulder Canyon, west of Boulder, Monday morning to honor the 18-year-old University of Colorado Boulder student who ...

Boulder announces Presidents Day schedule: city facilities closed, but recreational centers, Boulder Reservoir, and Flatirons ...

Boulder conducts a controlled burn to reduce wildfire risk; residents advised not to call 911 for visible smoke.

Check out the scores and top performances from Tuesday’s high school basketball and flag football playoff action.