Because growing conditions vary from year to year, the rings are not uniform. The record of good (wide ring) and slow (narrow ...

TUESDAY, Dec. 23, 2025 (HealthDay News) — Trees don’t just clean the air, they also keep a quiet record of the past. New research suggests that tree rings may help scientists uncover missing pieces of ...

Perhaps you’ve wandered through a forest or strolled into a neighborhood park and found tree trunks — and wondered if counting the rings on a trunk is truly a way to know the tree's age. "Most of us ...

Trees need a certain number of warm days in their growing seasons to grow properly; otherwise, the cell walls of new growth ...

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 ...