The governor has unfortunately fallen into the common trap of assuming two very different projects have the same cost-benefit ratio.

After a 2016 fire left the Spokane Tribe without water or power, the community turned to solar for back up. Will other tribes follow suit?

The project will dramatically increase tanker traffic in the Salish Sea, and with it the risk of a major spill.

While the state Department of Ecology is concerned about meeting deadlines, the proposed solution from the Department of Energy is a non-starter.

When turbines gets too old, something has to happen with all its parts. Much of it ends up in landfills.

Senate Democrats are considering a bill that would nearly double the state's hazardous substances tax to pay for the projects, but they may need Republican help to pass it. 

City Light forecasts show South Lake Union needs less energy than was predicted in 2011. Officials say the Denny Substation is still necessary.

When researchers from Pacific Northwest National Lab analyzed the atmosphere over the Amazon, they discovered how drastically we are changing pure air.

Edwin Ngugi Wanji first came across solar panels while dissecting calculators as a kid. Now he's teaching the power of solar to kids in Seattle and across the world.

Washington's efforts to reduce carbon could fight climate change, but business owners are concerned about who makes fuel and who consumes it.

Today we fight it, but generations ago the city thrived on it.

Democrats have a solid majority in both houses of the statehouse for the first time in years and a long list of environmental priorities. 

At Washington’s Hanford nuclear site, failing infrastructure and make-do plans as the West prepares for a new round of radioactivity.

Some of 2018's biggest environmental challenges hide hints of hope for 2019 and beyond.

WATCH: UW doctoral candidate Judy Twedt makes climate data into music.