Climate change

New research finds only a small portion of the nation’s rivers may be able to maintain today’s diversity of fish and other aquatic wildlife as the climate warms.

Learning declines as students suffer mentally and physically in hot environments.

As the climate warms, some mountain trees are moving higher up, while others are spreading downhill. Scientists say something inside the trees may explain why. And that split could reshape watersheds and wildfire risk.

High temperatures and a poor snowpack led to a lackluster winter for nearby ski resorts. But according to experts and trail users, those conditions could have consequences for summer sports, too.

Keystone Resort in Colorado was the first resort in the country to open in 2025, in part due to their emphasis on early-season snowmaking. As climate change amplifies drought in the Mountain West, ski areas across the region are considering how best to use increasingly scarce water resources.

A new study finds the iconic whitebark pine, which spans several Mountain West states, could lose most of its habitat to climate change in the coming decades. Scientists say the loss could impact wildlife – and people.

They say extreme heat and other climate impacts should be considered in monetary policy-making.

Across the West, climate change is putting snow sports like skiing at risk. For Indigenous skiers, that adds to a long history of exclusion from the sport.

A new analysis shows that climate change is causing the number of extremely hot summer days to rise in most major U.S. cities. Some of the biggest increases are in the Mountain West.

A new study from Climate Central shows that Arizona, Colorado, Nevada, New Mexico and Utah have had more than 20 extra high heat-risk days on average, and pregnant mothers without access to cooling could be more at risk.