Do you remember the days when the skies were blue ... or gray, at least?

Despite a hazy skyline, Seattle's tourism industry says it hasn't taken a hit. But it is taking precautions.

Mossback dives into the Burke Museum's paleobotany collection to find out what Washington used to look like.

WATCH: What the view from the Space Needle looked like on the worst air quality day this century. 

Researchers in Bellevue, Wash. have developed a way to identify, track, and zap the bugs in a split second.

We know the problem: The whales are starving. We've tried just about everything to address that — except the one thing we really need to do.

A judge this week dismissed a suit by young people demanding a healthy climate, but they will keep fighting.

As wildfires spark, parts of the Internet glow with them through hashtags and tweets.

Where there's smoke, there's fire — and public health risks for those living near it.

Upcoming protests on Washington's coast have roots in a similar trip by a U.S. Supreme Court justice committed to protecting the environment.

I-1631 would redirect carbon fee funds to Washington communities affected by carbon pollution.

The world is watching as Gov. Jay Inslee's orca task force hopes to find ways to save an endangered population of killer whales.

What we learned from capturing live orcas — about us and them.