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

MaMA has so far identified more than 230 lingering ash trees. Most are from the Hudson Valley region, ground zero for the ...

Dartmouth College undergraduate researcher Farrar Ransom looks up to the still-unfolding leaves of an ash tree in the Hubbard Brook Experimental Forest in North Woodstock, N.H., on May 19, where he ...

The invasive emerald ash borer, according to the U.S. Department of Agriculture, was first found in the United States in southeast Michigan in 2002. In the decades since, the wood-boring beetle has ...

LAKEWOOD, Colo. — Emerald ash borers, a type of invasive beetle that infests and destroys Native American species of ash trees, have been found in Lakewood for the first time, the city said on ...

This non-native beetle kills ash trees by feeding on the layer beneath the bark, cutting off water and nutrients. Approximately one-third of the trees in Fort Collins are ash trees, making the city's ...