Gas-powered cars and diesel trucks remain the state’s largest sources of smog and soot despite decades of cutting emissions.

Any boater who has navigated a pristine waterway, experienced life below the water's surface, or anchored off a picturesque beach likely appreciates nature's beauty. Yet some of those very same ...

Can cleaning products ever be good for the environment? Not according to the man behind the biggest green brand – but some are more eco than others ...

The launch of a new PFAS treatment plant comes as the Environmental Protection Agency is poised to loosen Biden-era water-contamination standards.

Washington's Department of Ecology released studies to aid in the development of clean energy projects, while respecting ...