Once thriving, there are now believed to be just 73 Southern Resident killer whales left in Washington state's Puget Sound.

The spring chinook run on the Snake River has just concluded, and this year was supposed to be consequential for the struggling fish. Four years ago, environmental activists wrote in these pages that ...

In the hours before the Seattle Mariners took on the Pittsburgh Pirates on July 4, something fell from the sky: a salmon. And ...

Issue: Whether Section 505 of the Clean Water Act authorizes citizens to invoke the federal courts to enforce conditions of state-issued pollutant-discharge permits adopted under state law that ...

The project, in partnership with the Washington State Parks and Recreation Commission, will rehabilitate 4,600 feet of ...