air pollution

Car exhaust at night is drowning out flower scents – a big problem for little insects. That’s according to a new study from the University of Washington.

A group of natural gas utilities in Washington Friday filed the third legal challenge this week to new state limits on global warming pollution. The…

The sponsors of a Washington initiative to tax carbon emissions say they're considering not turning in a final batch of about 100,000 voter signatures by…

The U.S. Department of Transportation and Paul Allen's company Vulcan Inc. are teaming up to stage a $40 million to $50 million winner-take-all…

The administration of Washington Governor Jay Inslee has officially begun a rulemaking to cap greenhouse gas pollution from large industrial sources.…

The EPA has given the state of Idaho notice that a corner of the Idaho panhandle isn't meeting stricter new air quality standards. The agency intends to…