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

In the quiet reaches of California’s White Mountains, one tree has survived through 4,800 years of storms, droughts, empires, ...

What a great challenge it would be ... Climb the highest mountain, and once there climb the highest tree,' said Van Wagner.

A UC Davis professor's pleasure hike in the High Sierra turned into a new elevation record for California's highest tree, the ...

The mountains (such as the highest ... and blazing sunshine, but some trees specialise in these conditions. Some, like the Scots pine, have become iconic; others, like the willows, are less ...

The resulting outbreak painted expanses of green mountains reddish-orange and gray as the beetles killed countless pine trees across the region. Colorado’s popular recreation areas were hit ...

Arizona has begun the first phase of a wildfire prevention project around the mountain community of Pine Lake.

Mountain Pine Beetles are native to Colorado, and Till said the recent population increase may be due to increased stress on trees. He added those stressors can be anything from fires to lack of ...