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The states join 26 others to argue the president's plan increases public health risks and violates the federal Clean Air Act.

Study shows trees along the coast and in the Cascade and Olympic mountains have the most potential to sequester carbon.

With fishery limits now set, attention turns to rebuilding "overfished" salmon runs and protecting Southern Resident orcas.

Visitors to Northwest forests and parks will still see Smokey the Bear and the familiar fire danger color scheme, but new science will inform those predictions.

After years of conservation efforts, surveys show depleted populations of groundfish are rebounding ahead of schedule.

Confused salmon keep getting lost on their way back to the nest, but wildlife scientists are helping them make scents of the journey.

As more cities like Seattle ban plastic straws, Swedish-owned BillerudKorsnäs design lab has is developing a solution.

How songbirds move could help explain how bird species are dealing with rising temperatures and climate change. 

In this 360 video, see how the Eagle Creek Fire changed the forest and its popular hiking trails.

To prevent large-scale wildfires, we'll need to allow some blazes to burn — and set others ourselves.