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

All of Iowa's 99 counties confirmed having the ash tree-killing insect, emerald ash borer, the Iowa Department of Natural Resources reported Thursday. As one of the most commonly planted street trees ...

Glen Cove will replace ash trees damaged by the emerald ash borer, an invasive beetle from Asia that has destroyed tens of millions of trees across North America, city officials said. The city will ...

As the Twin Cities fight against the infestation of an invasive beetle by removing Ash trees, new varieties of trees are being planted in their place. Since planting began on April 8, Minneapolis has ...

Arborist Greg Ranallo and one of the ash trees he has recently treated against the emerald ash borer in Shelburne on Friday, July 19. Ranallo favors treating the trees to curb the spread of the ...

Native fungi from forests killed emerald ash borers in lab tests, offering a potential new biological tool to slow the ...

Waterloo is partnering with the Iowa DNR to replace about half of the trees that were lost to the emerald ash borer in the past decade. The city will be making one type of apple tree and three species ...

PORTLAND, Ore. (KOIN) – The dreaded emerald ash borer has made its way into Portland, and it poses a threat to every ash tree in the city. The invasive beetle from East Asia has already had a ...

NEW YORK (AP) — Five prominent species of ash tree in the eastern U.S. have been driven to the brink of extinction from years of lethal attack by a beetle, a scientific group says. Tens of millions of ...

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

Two new pests in the Willamette Valley could decimate trees and worsen the ‘urban heat island’ effect that makes some neighborhoods hotter than others For years, Portland area politicians have ...

The emerald ash borer has been found in all of Iowa's 99 counties. (Photo by Dr. James E. Zablotny/USDA) The emerald ash borer, a non-native, wood boring insect that affects ash trees, has been ...