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We've all heard about counting the rings inside a tree trunk to discover its age. But there are other ways to determine a tree's age without chopping it down.

The annual pilgrimage to the attic, basement, or local tree farm has begun. You’re on a mission to find the one. The perfect ...

Few sights feel as wild and lively as the rapid tap-tap-tap of a woodpecker at work on a tree trunk. For garden lovers who ...

Ever wonder how Rockefeller Center picks its Christmas tree? Or where the tree's lights are stored during the offseason? Or ...

The world is losing vast swaths of forests to agriculture, logging, mining and fires every year—more than 20 million acres in ...

Trees are vital to life on Earth. They absorb carbon dioxide and release the oxygen that sustains us, anchor soil to prevent ...

Two decades ago, the mathematician Moon Duchin spent her summers teaching geometry at Mathcamp, a program for mathematically talented teens. Campers contemplated notions such as how to prove whether a ...

Planting trees is something most people can get behind, and tens of thousands of reforestation projects now operate worldwide ...

Safford, his team and this writer are in the Inyo National Forest in the Southern Sierra Nevada mountains, more than 11,000 ...

The 75-foot-tall Norway spruce that will serve as the Rockefeller Center Christmas Tree will arrive Saturday morning from ...