NIIGATA--The tree line near the halfway point of 3,776-meter Mount Fuji, considered the uppermost limit where such plants can thrive, has steadily climbed over the past four decades and global ...

Scientists discovered a hidden stand of whitebark pines on Wyoming's Beartooth Plateau, 180 meters above the tree line at ...

The cooler temperatures shifted the tree line downslope and transformed the high mountain landscape from forest to the alpine tundra that exists today. One of the paper's authors, David McWethy ...