The Port of Seattle is holding its first summit on sustainable aviation fuels . It’s part of a push to reduce greenhouse gas emissions from flights that originate at Seattle-Tacoma International Airport.

In what’s been called the most ambitious statewide climate science education initiative in the country, Washington state is putting $4 million dollars this year toward training teachers who want to integrate climate science into their lesson plans. It’s part of fulfilling so-called "next-generation science standards," which aim to get students solving problems rather than memorizing facts.

The state Department of Fish and Wildlife has launched two months of public meetings as regulators decide how much salmon can be harvested from state waters. The process includes the first official statewide forecasts detailing how many salmon are expected to return in 2019.

A de facto ban on whale watching boats that would have required them to stay 650 yards away from endangered Puget Sound orcas for three to five years has been stripped from revised legislation. The compromise goes against a recommendation from Gov. Jay Inslee’s Orca Recovery Task Force .

Canada’s National Energy Board has again approved the proposed expansion of the Trans Mountain Pipeline. If completed, the project will see a massive increase in oil tankers through the Salish Sea.

Climate activists rallied on the Capitol steps in Olympia on Thursday and delivered boxes containing nearly 150,000 written comments to Gov. Jay Inslee. They're urging him to reject proposals for fracked gas infrastructure in Washington, including two projects already underway, in Tacoma and Kalama.

More than 60 percent of Washington schools tested by the state Department of Health last year show unsafe levels of lead. That’s according to a nonprofit group that's pushing for higher standards in the wake of the water crisis in Flint, Michigan.

Oyster growers want to force the state Department of Ecology to allow the use of pesticides in Willapa Bay and Grays Harbor. A bill before the state Legislature would require the agency to grant permits to control burrowing shrimp. It also would transfer oversight and regulation of the pesticides to the state Department of Agriculture.

Demolition of Seattle's Alaskan Way Viaduct is underway. Crews began tearing down a former on-ramp near First Avenue and Columbia Street on Friday. Another piece near the market began coming down shortly thereafter. Unlike the almost instantaneous implosion of the Kingdome just a few blocks away 19 years ago , the removal of the old double-decker freeway has to happen in relative slow motion.

For centuries, mountain caribou have inhabited the unique inland rainforest of the Pacific Northwest. And they were once so abundant, they were considered an "insurance food" for indigenous tribes in the area that spans the northeastern corner of Washington state, as well as parts of Idaho and British Columbia.