According to Columbia Riverkeeper staff attorney Audrey Leonard, the government's environmental impact statement for the plan undercounted the upstream and downstream emissions facilitated by the pipeline.

The Crater Lake newt only exists in the rich, blue waters of the Oregon national park. Its population has been declining in recent years, mostly due to growing numbers of signal crayfish.

Fast-spreading invasive aquatic mussels are hitching rides on boats, kayaks and jet skis. So, people are working to keep them out of the Columbia River Basin, the only major river basin in the U.S. without an established quagga mussel population.

After wildfires, it can be hard for native plants to come back. That’s why volunteers are planting them and spreading seeds this fall in southeastern Washington, helping sagebrush and wildflowers take root again.

Oregon State University researchers looked at change in value of privately-owned forests in Oregon, Washington and California over the last 20 years.

Iconic red cedars — known as the “Tree of Life” — and other tree species in the Pacific Northwest have been dying because of climate-induced drought, researchers say

The agency has a history of diving into big construction projects that exceed projected costs, fall short on projected benefits and, in some cases, create new problems that engineers hadn’t bargained for.

The report emphasizes various impacts of climate change on the Northwest, predicting warmer winter temperatures, reduced mountain snowpack, more frequent and severe droughts, increased extreme rainfall, and larger, higher-elevation wildfires.

Since the site closed last year, the Oregon Department of Environmental Quality and the U.S. Environmental Protection Agency have been tag-teaming on gauging the level of pollutants and hazards at the shuttered wood-treatment facility.

OPB’s Paul Marshall spoke with Quinn Read, the director of conservation at Portland Audubon, about the owl’s rare appearance.