Just outside Cottage Grove at the U.S. Department of Agriculture’s Dorena Research Center, scientists are playing a numbers ...

Portland’s tree canopy will not look the same over the next decade. For many residents, the first signs of the emerald ash ...

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

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 ...

Over the summer, a private arborist noticed an ailing green ash tree at the David Douglas Aquatics Center near Hazelwood-Mill ...

Commercial pilots reported seeing ash in the vicinity of the mountain, the site of the infamous eruption of May 18, 1980, ...

PORTLAND, Oregon — It may look a bit like it, but Mount St. Helens is not erupting Tuesday morning. The ash you can see ...

Discover the latest on Mount St. Helens. Is the recent activity ash or signs of an eruption? Get informed on current events.

According to a statement from the U.S. Geological Survey, "strong easterly–southeasterly winds in the vicinity of Mount St.

Strong winds were sending decades-old ash from the 1980 eruption aloft on Tuesday.