Arizona Gov. Katie Hobbs said a meeting among most governors fighting over declining Colorado River water has put them “on a ...

The Department of the Interior called seven governors to Washington to try to push the states closer to a joint plan by Feb. 14.

The Green River, the largest tributary of the Colorado River, appears to defy gravity for more than 100 miles as it cuts ...

The western U.S. is a geologists' dream, home to the Rocky Mountains, the Grand Canyon, active volcanoes and striking sandstone arches. But one landform simply doesn't make sense.

Federal proposals being considered could slash Central Arizona Project water deliveries — which Tucson uses to supply ...

For over a century, scientists have puzzled over why the Green River appears to flow “uphill” through the Uinta Mountains in Utah before eventually joining the Colorado River. A new study suggests the ...

As Pacific Gas and Electric Co., seeks to decommission its Potter Valley hydroelectric project, the Round Valley tribal coalition is confronting the Trump administration over the future of the Eel ...

Ken Salazar embodies southern Colorado history. He just gave boxes of it to History Colorado’s Borderlands project.

An international team of geologists believes it has deciphered, after one hundred and fifty years of scientific debate and ...

The broad streets and historic buildings create an openness that modern cities often miss. Pueblo’s rhythm feels distinctly ...

Hill Country otters are showing up again, but viral sightings can draw crowds. Calm sharing and distance keep them moving ...

Millions of years ago, the Green River carved a path through the Uinta Mountains instead of flowing around the formation. Now ...