California is about halfway to meeting a 2030 dairy methane reduction target and could face steep costs to get the rest of the way, according to a CARB report.

Prompted by a petition from environmental justice groups, California will look at the role of dairy-manure biomethane in the state’s low-carbon fuel standard.

The Western Climate Initiative is one option the Vermont Climate Council will explore to replace TCI-P in its Climate Action Plan released in December.

Washington officials have begun the nuts-and-bolts rulemaking on three major climate change bills the state’s legislature passed in April.

Washington will convert its entire state-owned vehicle fleet to electric by 2040, according to an executive order issued by Gov. Jay Inslee.

A petition challenges the California Air Resources Board's inclusion of dairy-manure biomethane as potentially eligible for credits under the agency’s LCFS.

A Washington Supreme Court hearing provided a practice run for possible upcoming court battles over Gov. Inslee’s partial vetoes of recently passed climate bills.

Legislative leaders slammed Washington Gov. Jay Inslee’s veto of segments of cap-and-trade and low-carbon fuels standard bills.

Washington’s climate change bills will not go into effect until the legislature passes a transportation budget. No one is quite sure when that will be.

Washington’s legislature passed a low-carbon fuel standard bill that will require refiners to reduce the carbon in motor fuels sold in state.