The UA has plenty of special features to offer, but one of its more overlooked aspects is its abundant plant life—specifically, that of the Laboratory of Tree-ring Research. UA’s tree-ring lab right ...

Discovering evidence of deadly deluges of snow from the past could help protect people on mountains around the world, researchers say. By Katherine Kornei A rumble, a deluge of snow and then silence — ...

Douglass' original collection forms the core of the tree-ring lab's archive, which has grown into the world's largest collection of ancient timbers, with more than 2 million specimens ranging from ...

Tree rings are not just a great record of a tree’s life, but they can preserve a snapshot of the Earth and beyond at different times. Now Australian scientists analyzing these records have found ...

Weather patterns like heat waves or dry spells can sometimes stall over one region. A new University of Arizona study found clues about why. The researchers analyzed tree rings from centuries-old ...