The Playboy magazine founder compared building homes near the Hollywood sign to putting "a house in the middle of Yellowstone ...

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

Tired of trimming every tree ... the Rocky Mountain white pine, limber pines are native to the Rocky Mountains in the western U.S. and Canada. They've been an important part of that landscape ...

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.

It is increasingly threatened by climate change, which is leading to increased fires and mountain pine beetle outbreaks ... It’s also important to protect the places on the landscape where the tree is ...

In response to warmer temperatures, mountain pine beetles start their flight season more than a month earlier than historically reported, and fly more than twice as long. When adult beetles emerge ...