The Democrat-controlled Washington Senate barely passed a cap-and-trade bill designed to trim industrial carbon emissions.

The Washington Senate approved a bill that would require an increased use of biofuels to cut carbon emissions from vehicles.

A bill to dramatically reduce Washington’s GHG emissions from large refrigeration and air conditioners is near a final vote in the Senate.

A bill to require consideration of climate change in land use planning appears headed toward approval in the Washington state legislature.

Amazon threw its support behind a Washington state bill to trim carbon emissions from motor vehicle fuels sold in the state.