Saying that a recent tree-climbing school was hands-on is a bit of an understatement. As an arboreal activity that requires a whole-body commitment, the course held Aug. 12-15 by Penn State Extension ...

Climbers Brian French and Will Koomjian ascend the Brummit fir in Coos County Oregon. It is the National Champion Douglas fir and stands 335 feet tall. Freesolo Photography / Sean O'Connor “Watch out!

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 ...