The emerald ash borer, a tiny yet destructive invasive beetle, has been confirmed at six new locations in northern Oregon.

The discovery puts all of Multnomah County into a quarantine zone. It’s the fifth county to be quarantined in Oregon.

The emerald ash borer is deadly to ash trees—and aggravating for homeowners. Here's how to know if your tree has emerald ash ...

By Alby Thoumsin  In 2002 in Michigan, many ash (Fraxinus sp.) trees started to show obvious signs of decline, and after ...

An invasive, tree-killing pest has made its way to Portland, spelling trouble for the many native ash trees that cool ...

Emerald ash borer (EAB) is a tiny green beetle from eastern Asia that is having a devastating impact on ash trees in North America, including northwest Oregon. Across the U.S., ...

WISCONSIN (WJFW) — Invasive species have always hurt Wisconsin forests, but one beetle is causing serious damage to ash trees ...

An emerald ash borer larva chews through the cambium layer of an infested ash tree in Armstrong, located in Emmet County. A buildup of feeding tunnels cut off the vascular or “plumbing system" of a ...

NEWBURYPORT — The city’s stock of healthy ash trees is under attack as the result of an invasive insect that is killing the canopy trees slowly but surely, according to local tree officials. Evidence ...

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 ...

WILLISTON - The small ash tree to the right of Best Buy's front doors in Williston is now only a skeleton. Pealed back bark reveals a maze of squiggly lines, a signature calling card from ash trees' ...

SALISBURY — Pulling back the flaking bark of the green ash tree with the ease of someone peeling an orange, Jay Bolin exposes the evidence he expected to find. “Look at those D-shaped exit holes,” he ...