Cornell is at the forefront of determining how "invisibility cloaks" and walls of protection may give ash trees hope of revival.

Ash trees are dead or dying because of the little iridescent green beetle The emerald ash borer's small size – no bigger than a cooked grain of rice – belies its destructive power. The beetle’s ...

Kris Dullmer of Ash Tree Solutions, right, injects an insecticide into an ash tree named Big Jim in the Catamount Community Forest to combat the emerald ash borer in Williston on Tuesday, June 25.

You’re walking along White Rock Creek, surrounded by the dense canopy of green. In that canopy, you see the majestic ash ...

Jules Ginenthal, Natural Areas Stewardship coordinator at Cornell Botanical Gardens, plants a grafted lingering ash tree ...

Dallas officials warn the emerald ash borer could impact hundreds of thousands of trees, forcing removals while the city ...