climate change

Utilities across the West are launching a new regional energy market designed to help them buy and share power a full day before it’s needed — an effort supporters say could lower costs, improve reliability and make it easier to move renewable energy across state lines.

Airports across the Mountain West are dominating a new ranking of the most turbulent in the United States, underscoring how the region’s mountainous terrain shapes flight conditions.

A new report from the American Lung Association finds about half of U.S. children are living in areas with unhealthy air quality, and several Mountain West cities rank among the most polluted in the country.

Wind and solar power are rapidly expanding across the Mountain West, with some states now generating a significant share of their electricity from renewable sources, according to a new report from Climate Central, a nonpartisan research group.

In the arid Mountain West, rivers are under growing pressure — from climate change, drought and rising demand for water. But new research from New Mexico suggests some river ecosystems may be more resilient than they appear.

Stretches of calm weather in the mountains might seem harmless, but they can quietly increase avalanche danger over time. And traveling in groups doesn’t always make skiers and snowshoers safer. That’s one of the key takeaways from experts in the Sierra Nevada, where one of the deadliest avalanches in U.S. history recently struck near Lake Tahoe.

As winters begin to warm, trees and plants preemptively begin to bloom, elongating our allergy seasons. Allergy seasons have significant health implications.

Conservation groups filed a lawsuit on March 2 challenging the Trump administration’s rollback of federal protections for the greater sage-grouse across nine states: California, Colorado, Idaho, Montana, Nevada, Utah, Wyoming, North Dakota, and South Dakota.

A new report finds 2025 brought widespread drought, massive wildfires and destructive windstorms across several Mountain West states — and underscores how closely connected those disasters have become.

A coalition of public lands advocates and historians has filed a federal lawsuit against the Trump administration, accusing it of censoring American history and science at national parks, including several in the Mountain West.