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

The signs of winter injury to your trees and shrubs will be more apparent once you're able to get outside ... a heavy pile of snow or ice. After all, unless you have a limber pine (Pinus flexilis ...

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

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