One of the top issues for environmental groups this legislative session is the pollution caused by thin, single-use plastic bags. They fly out of landfills into waterways, harming marine life and water quality. They also gum up recycling machinery and contaminate commercial compost. So, Washington's Environmental Priorities Coalition is pushing for a statewide ban on the bags.

A bill to shield endangered Puget Sound orca whales from noise and other disruptions caused by vessel traffic got a first hearing in Olympia on Tuesday. The most controversial piece of the proposed legislation would implement a temporary, de facto ban on Southern Resident whale watching.

Mountains loom large in the Skagit River Valley. Visitors come from all over the world to spend time exploring the massive peaks of the North Cascades. But few people get the perspective on them enjoyed by two men who are documenting the response of Washington’s glaciers to climate change.

This week, Canada’s energy regulator is listening to feedback on the proposed Trans Mountain Pipeline expansion. It’s part of a two-step process to consider the possible effects of the expansion on climate change.

The healing power of nature is well established. People who garden, take frequent hikes or regularly play with a dog or cat experience the benefits firsthand. Time spent with nature is known to improve mental health, increase physical health and reduce stress. A professor of social work and criminal justice at the University of Washington Tacoma wants to see that knowledge put to work in state prisons, to help them get better results.

The TransCanada pipeline and opponents have filed their final submissions to Canada’s energy regulator. This second review of the proposed pipeline expansion, which would see dramatically increased oil tankers in the Salish Sea, was ordered by a court last year.

As further review of the Trans Mountain Pipeline continues, a number of First Nations in Alberta are making overtures to buy the project. At the same time, one of Canada’s railways is teaming up with another First Nation to temporarily convert oil into CanaPux , oil bricks that resemble hockey pucks. KNKX’s Craig McCulloch reports.

It appears a pattern of heavy storms in the Pacific Northwest may have obscured the effects of climate change over the past 20 years. Researchers here have identified a southern shift in the jet stream as a source of heavy precipitation that built up snow pack and glacier mass in Washington and Oregon, while they were declining elsewhere.

Gov. Jay Inslee is pushing to get Washington state to 100 percent clean energy by 2045. And he's not alone. Dozens of environmental groups, labor organizations, local governments and clean energy businesses also support the idea.

Canada’s energy regulator has issued draft recommendations concerning the proposed expansion of the Trans Mountain Pipeline and its impacts on marine life. The expansion would see a dramatic increase in tanker traffic through the Salish Sea and Puget Sound.