By ALYSSA VAN DOORN The Outside Story The longer, warmer days of spring spark phenological changes in trees, from root to tip ...

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

Each horizontal bar represents the tree-ring pattern for one tree ... and dead samples from the long-lived bristlecone pine (the oldest one has been growing for a remarkable 4,600 years ...

Cobb Landmarks is partnering with the University of West Georgia to date Atlanta’s oldest remaining structures by examining the tree rings of the timber used in construction.

(The specimen currently holding the title of oldest is a bristlecone in California’s White Mountains.) Currey, who planned to study the climate of the Little Ice Age using tree rings, knew ...