The highest recorded elevations of Jeffrey pines provide new evidence of a warming climate in the High Sierra. UC Davis ...

This crazy leapfrogging of species challenges what we think we know about these systems reacting as the climate warms." Jeffrey pine trees are tolerant of both cold and drought, so while their ...

Plenty happens below the surface, and sometimes it can get, uh, rather gnarly. It’s often said a tree’s root system under the ground is as large as the tree above ground. That’s generally true, ...