A new report issued by the US Forest Service outlines the key factors that may have contributed to the deadly fall ...

Inexperience and weather were key factors in a climbing accident that killed three climbers and severely injured another in the North Cascades this spring.

Sitting in an old-growth spruce fir forest, Doug Smith says he can see first-hand the impact of reintroducing wolves on the ...

The collapse of the world’s second-largest ice sheet would drown cities worldwide. Is that ice more vulnerable than we know?

Sitting in an old-growth spruce fir forest, Doug Smith says he can see firsthand the impact of reintroducing wolves on the larger ecosystem of Yellowstone National Park. Long before Yellowstone became ...

The wind, having tumbled down 4,000 feet of elevation from the domed summit of the ice sheet hundreds of miles to the west, ...

Liquid oxygen, maintained at temperatures approaching minus 200 degrees Celsius, serves as the chemical catalyst that allows ...

There’s a magical place in northeastern Oklahoma where the hills roll like gentle waves, ancient trees whisper secrets, and ...