Puget Sound's first resident orca calf born in two years has gone missing. Its mother has been spotted without her offspring, prompting scientists to presume the calf is dead.
It's been 14 years since Oregon ran out of money to complete a pollution cleanup at an old shipyard in Coos Bay. Now state money is available to sample the site's sediment and shellfish and determine if there's more work to be done.
Republican Rep. Mike Simpson of Idaho is asking President Barack Obama to hold off designating a rugged swath of central Idaho as a national monument.
Local and national environmental groups filed a petition Friday claiming Oregon erred in granting an air quality permit to Oregon’s largest oil train terminal.
You have probably seen ribbon grass before. It’s a pretty, ornamental plant. It may even be in your yard. But ribbon grass is invasive in the Northwest, and it’s choking one of Oregon’s most pristine waterways.
Testing in California revealed a significant risk of student exposure to chemical compounds known as polychlorinated biphenyls. The group doing the testing suggests a temporary move into portables, which have their own host of problems.
Last week the Wyoming governor invited leaders from Northwest tribes on an all-expenses-paid tour of his state's coal operations. One by one, tribes are saying thanks, but no thanks.
If Eastern Oregon's current wolf population trends continue, the state can relax protections and consider removing the species from its endangered list next year.
Construction begins this week on a state project in the Methow Valley that will give fish a boost of cold, clean water in rivers near Twisp, Washington.
The U.S. Forest Service and the Navy are addressing public concerns about a controversial training exercise.