UC Davis Professor Hugh Safford was hiking for pleasure in California's High Sierra when he stumbled upon a new elevation record ... then a lodgepole pine—trees he expected to see at such ...

A peak in the middle background is Needham Mountain, where another Jeffrey pine was observed at very high elevation, underlining that this ... gardening skills to the task of planting Jeffrey pine ...

One of the most iconic trees of the Pacific Northwest has been ... But usually it’s kind of the lower elevation areas that are really sun exposed that they tend to fail first.