"U.S. authorities on Friday gave wildlife managers in Washington, Oregon and Idaho permission to start killing hundreds of sea lions in the Columbia River basin in hopes of helping struggling salmon and steelhead trout."

"As Oregon Gov. Kate Brown crafted a bill in 2018 to enact sweeping limits on greenhouse gas emissions, leaders at an obscure state agency worked behind the scenes to discredit research they feared would persuade her to target one of the state’s most powerful industries."

"A Navy military testing program that appeared headed to routine approval has hit a wall of opposition from Washington’s governor, attorney general and state agencies because of potential harm to endangered orcas in Washington waters."

"Tahlequah is pregnant again. The mother orca raised worldwide concern when she carried her dead calf 17 days and more than 1,000 miles, almost exactly two years ago. Now, she has another chance at motherhood, scientists have learned."

"Federal regulators on Thursday threw a significant curveball at a coalition that has been planning for years to demolish four massive hydroelectric dams on a river along the Oregon-California border to save salmon populations that have dwindled to almost nothing."

"As dams are being torn down across the United States, Washington is floating a plan to dam one of the state’s greatest rivers."

"The federal government on Tuesday decided to scrap plans to reintroduce grizzly bears to the North Cascades ecosystem in Washington state."

"The Trump administration on Thursday denied Endangered Species Act protection to a weasel-like woodland mammal called the Pacific fisher across most of its West Coast range, except for a dwindling population in California’s southern Sierras."