This breathtaking aerial view captures endless evergreen forests covering rolling mountain ranges beneath a bright blue sky. Patches of vibrant autumn foliage add striking splashes of gold and orange, ...

At UC Berkeley's Central Sierra Snow Laboratory, located at 6,894 feet above sea level near Donner Pass, researchers collect detailed measurements of the snowpack each day. There is still some snow on ...

The Inca Empire became the largest civilization in the Americas before the arrival of Europeans. From their capital at Cusco, the Inca built an extraordinary network of roads, cities, and agricultural ...

It's not often that Marika Favé, our impish, fast-talking mountain guide, falls silent. It's a spring morning on the packed, sun-streaked gondola to the peak of the Marmolada glacier, the highest ...

Editor’s note: The mountains separating Eastern and Western Washington are as fascinating as they are beautiful. This week we share an edited excerpt from a chapter of naturalist David B. Williams’ ...

A 500-mile mountain range stretches from the Adirondacks in New York to the Gaspé Peninsula in eastern Quebec. Nearly 70 million people live within a day’s drive of its alpine zones – the treeless ...

A stretch of late-summer warmth is giving way to cooler, wetter weather across the mountains, with temperatures dropping below normal and light snow possible. Colorado is beginning to see the first ...

Summer is off to a hot start in the Colorado mountains as soaring temperatures, a lack of precipitation and wind are worsening already severe drought conditions and exacerbating wildfire concerns.

Does anyone remember when mountain biking was a fringe sport? I do. Back in the day (call it the eighties), mountain bikers were borderline outlaws, riding forest trails on the sly and thumbing their ...