The Pacific Northwest Chapter of the International Society of Arboriculture will host the Southern Oregon Tree Climbing Competition on Saturday and Sunday, April 6-7, at the Palmerton Arboretum, 300 W ...

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 ...

Wagner saved the biggest ascent for last, going up 3,213 feet on Mount Davis, Somerset County, the state’s highest summit, ...

A Pennsylvania teacher and forester has completed his goal of climbing a tree atop the highest point he could access in all 67 of the state’s counties. Van Wagner’s journey started close to home in ...

Editor’s note: This is an edited excerpt from Lynda V. Mapes’ book, “The Trees Are Speaking: Dispatches from the Salmon Forests” ($29.95 hardcover), which will be published April 22 by the University ...

More than two dozen arborists from across the state and the greater Pacific Northwest will be in Rogue River, Ore., this weekend to strut their tree-climbing stuff. And the best men and women climbers ...