Eilis O'Neill

The new seawall on Seattle's waterfront is designed to help salmon with more natural light, rocks to provide habitat for plankton, and a false seafloor to mimic mudflats predating the city.

Climate change is forcing us to rethink how we use lakes as water reservoirs. That's creating conflict between east-of-the-Cascades farmers and recreation-seekers from the urban westside.

Washington state is on the hook for hundreds of road culvert projects ever since, this spring, when the Supreme Court let stand a mandate to remove fish barriers throughout the state.

Fire seasons are now 105 days longer in the western U.S. than they were in the 1970s. And longer wildfire seasons means more smoke pouring into cities and towns.

The governor’s orca task force met in Wenatchee to come up with a long-term plan to help the recovery of the orca population that spends much of its time in or around the Puget Sound. 

In the Pacific Northwest, there is no long-term study that shows how butterflies as a whole are responding to habitat loss and climate change.

Jackson Ludwig loves lakes. In 2003, Ludwig had a summer job as a Green Lake lifeguard, and the lake closed because of a toxic algae bloom. 

Hikers are feeling squeezed by the newfound congestion on Washington trails — but so are the tribes with treaty rights to hunt and gather.

A U.S. Supreme Court ruling means Washington must fix the culverts that block the most salmon habitat by 2030. One estimate puts the cost at $2 billion.

In the 1960s and '70s, catchers captured nearly 50 orcas from Puget Sound. Only one is still alive and the Lummi Nation want her back.