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, ...

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 ...