The seven Western states that border the essential waterway use more water than it contains. Chronic overuse has drained its ...

Hiking the side canyons is like going through ecological time travel,” said Eric Balken, executive director of the Glen ...

Falling Lake Powell levels signal shrinking Colorado River supplies, with potential major cutbacks for California users.

Water experts, attorneys, and leaders on the Colorado Rivered convened for a conference at the University of Colorado Boulder ...

As I’ve followed the long-running negotiations over the Colorado River the last couple of years, very little progress has been made in transforming the century-old system of managing the river’s ...

Shrinking Colorado River has major effects on people, ecosystem Local tribes, many cities, rare birds and animals all depend on the Colorado River. Human development has greatly impacted the area's ...

In Yellowstone National Park — where gray wolves were reintroduced starting in 1995 — researchers have gone back and forth on whether the restoration of wolves has impacted the ecosystem. The idea is ...