Researchers: Air pollution and impacts from a changing climate are constant threats.
Extreme wildfires may increase 14 percent by 2030, even with deep cuts to greenhouse gas emissions.
Watch environmental journalist Beth Gardiner debunk three myths about air pollution.
Local scientists are beginning to understand how smoke exposure affects mortality in the Northwest.
Authors looked at pollution from highways, coal-fired power plants, hog farms, other sources.
Comment period continues through Aug. 9; Samish Island residents concerned.
Weather, emissions combine to form a smothering blanket of air pollution.
Automaker agrees to pay $4.3 million in penalties, but actual costs could be much higher.
State agencies have taken separate actions against U.S. Golden Eagle Farms in Skagit County.
Skagit River watershed glaciers have lost enough ice to equal the size of the city of Mount Vernon.