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

UC Davis Professor Hugh Safford was hiking for pleasure in California's High Sierra when he stumbled upon a new elevation ...

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

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.

Nancy Bockino is a mountain guide based out of Jackson, Wyoming, as well as a field ecologist with more than 30 years ...

From valley bottoms all the way to the tree line, nearly every single pine has been killed by an enemy smaller than a thumbtack: the mountain pine beetle. Tour British Columbia, and the scale of ...

The area is peppered with pine trees, a stark contrast with the palm ... which provides a much-needed respite from the usual tropical warmth. Mountain Pine Ridge, or Pine Ridge as the locals ...

Over the past decade the Mountain Pine Beetle (Dendrocthonus ponderosae) has killed millions of pine trees from New Mexico to the Yukon Territory, as a result of an unprecedented explosion in their ...

Pine Mountain, Ga (WRBL)- Friday night the city of Pine Mountain, Ga officially kicked off the holiday season with their annual tree lighting ceremony. Crowds gathered around for the local holiday ...

The tree is primarily threatened by an introduced fungal pathogen known as white pine blister rust. It is increasingly threatened by climate change, which is leading to increased fires and mountain ...