The area's iconic national parks are home to grizzlies, elk and mountain snowfall that feeds some of the country's most important rivers. A new report show the changes underway as temperatures rise.

The area's iconic national parks are home to grizzlies, elk and mountain snowfall that feeds some of the country's most important rivers. The region is warming quickly.

Scientists studied charcoal layers in the sediment of lake beds across the Rockies to track fires over time. They found increasing fire activity as the climate warmed.

Scientists used charcoal layers in the sediment of lake beds across the Rockies to track fires in each area. Combined with other data, it tells a story of increasing fire activity as the planet warms.

As the risk of fires rises in areas once considered too wet to burn, it creates hazards for mountain communities and for downstream water supplies.

Pikas – small cousins of rabbits – live mainly in the mountainous US west. They've been called a climate change poster species, but they're more adaptable than many people think.

Millions of miles of fences crisscross the Earth's surface. They divide ecosystems and affect wild species in ways that often are harmful, but are virtually unstudied.

A fire scientists offers a six-point strategy for preventing wildfires and living safely in flammable landscapes.

For the first time in the US, a ballot measure will ask voters whether to restore wolves to a place where they've been eradicated. Coloradans have strong views on both sides.

Restoring western forests – thinning out small trees and dead wood – is an important strategy for reducing the risk of massive wildfires. But these projects aren't fast, easy or cheap.