With the age of the Great Smoky Mountains forest, many trees have hit their average lifespan. The park's tree crew prunes or ...

When Brian French learned last week that the Doerner Fir was burning, he could think of only two reasons why: Either lightning had struck the enormous conifer in coastal Oregon — or someone had set it ...

Most climbers learn on rock or at the gym, but 26-year-old American Noah Kane started with trees in Costa Rica, where he spent much of his childhood. He did not climb up the branches as a curious kid ...