Snow covers the turning aspens on the west side of Cottonwood Pass on Oct. 3 near Buena Vista. Heavy snow fell across some parts of north-central Colorado’s mountains Tuesday, particularly the ...

As winters warm and lake ice duration shortens, algal blooms are interfering with water quality in lakes I’m motivated because we’re seeing, in these cold regions of the world, fast rates of change.

On a hot summer day, Julia Pop and MJ Farruggia paddled a two-person pack raft to the edge of Sky Pond, an alpine lake at 11,000 feet in Rocky Mountain National Park. “It’s blooming!” Pop told INSTAAR ...

September and October are excellent times to visit Rocky Mountain National Park for fall foliage drives and hikes. Peak viewing is expected to take place starting the third week of September, ...

The Kawuneeche Valley in Rocky Mountain National Park is facing a serious ecological problem as elk and moose have overgrazed ...

Imagine Wyoming 12,000 years ago: The ice age is over, and it’s warming up for the Holocene. Prehistoric hunters and gatherers inhabit the area. Just like today, there are alpine lakes in the Rocky ...