The amount of forest with problems is only a small fraction of the overall 22 million acres state officials looked at, but it is slightly above the 10-year average ...

Annual cold snaps have kept some invasive tree pests in check, but outbreaks could become more common with warming ...

Parts of the North Cascades and Mount Baker are facing an outbreak of the western spruce budworm, aerial surveys reveal. The ...

Fifty years ago, 73,877 acres of the Mission Mountains area were designated as wilderness, defined as, “an area of ...

King County is suing homeowners in Grand Ridge Park for allegedly cutting down more than 140 trees so they could have a ...

Aerial surveys find 545,000 acres of damaged trees in Washington, marking an increase from the previous year and underscoring ...

Every species of tree has unique characteristics, from its bark to its leaves, that you can use as clues to identify ...

Olympic National Park offers accommodations at five different lodges and resorts. Here's how you can match where you stay ...

Sitting in an old-growth spruce fir forest, Doug Smith says he can see firsthand the impact of reintroducing wolves on the larger ecosystem of Yellowstone National Park. Long before Yellowstone became ...

A popular mountain bursting with rhododendrons and endangered species in Mitchell County will soon reopen, nearly eight ...

Now, researchers at the University of Texas at Arlington are using artificial intelligence to take the guesswork out of pollen tracking, starting with tree pollen.

News Environment Trees killed by caterpillar outbreak helped to fuel Minnesota wildfires The eastern spruce budworm left dead — and highly combustible — balsam fir on the landscape ...