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.

In 2006, Kathleen Knight was walking through a forest in northwest Ohio. She's a researched ecologist with the U.S. Forest Service. All around her were big, beautiful ash trees, tall trunks with lush ...

The invasive fungal disease ash dieback has already affected 90% of ash trees in Central Europe. In addition, an invasive beetle threatens the trees. But there is now good news: trees that are ...

Like many trees, ash trees undergo leaf shedding each fall and winter. Unlike other trees, ash trees are specifically targeted by a pest: the emerald ash borer. These creatures are emerald ash borers, ...

Getting your Trinity Audio player ready... CARBONDALE — Carl Meinecke sidles up to an ash tree and wraps a tape measure around the trunk, gathering both circumference and diameter in one move.

Research entomologist Jian Duan cuts away bark from ash trees in search of emerald ash borers, an invasive species that has been killing off the trees. They’re looking particularly for those affected ...

A small beetle is responsible for the death and decline of billions of ash trees in North America, and the race is on to stop it from causing further damage. The USDA is hoping to spread the word so ...

Research Entomologist Jian Duan cuts away bark from ash trees in search of emerald ash borers, an invasive species that has been killing off the trees. They're looking particularly for those affected ...

How do you find an insect the size of your fingertip in a densely-packed forest? For Jian Duan, the answer is simple: follow the dead ash trees. On a rainy day in eastern Connecticut, Duan, a federal ...

Add Yahoo as a preferred source to see more of our stories on Google. A sticky trap on an ash tree in Belvoir Park area of Belfast [BBC] Traps have been laid as part of a research project to protect ...