Scientist finds Jeffrey pine trees at record mountain heights, suggesting climate-driven shifts in Sierra Nevada.

Knowing the names and stories of trees can add a whole new layer to your hikes. Here are eight that you might spot on ...

About 30,000 native trees, including dwarf birch and montane willows, are to be planted at around 600m (1,968ft) on Cairn ...

I picked up a road burrito at Alpha Coffee and headed up Little Cottonwood Canyon. Earth Day is coming Tuesday, April 22, but Alta Ski Area always gets into the action early. And what better a place ...

A professor's casual hike in the High Sierra turned into a new elevation record for California's highest tree, the Jeffrey pine, which wasn't formerly known to grow at extreme elevations.

Seasons can come and go in the temperate regions of the world with many false starts, but in the Appalachian Mountains, folks ...

A high-altitude woodland is to be created on Scotland's sixth highest mountain. About 30,000 native trees, including dwarf birch and montane willows, are to be planted at around 600m (1,968ft ...