A Berkshire Hathaway Inc. unit was sued for allegedly causing California’s largest wildfire of the year, which killed four people and destroyed almost 200 structures near the Oregon border.

It was the middle of July — with temperatures surging through one of the hottest summers in US history, half of the country in drought — and the Senate’s all-important member, Joe Manchin of West Virginia, had slammed the brakes on legislation to combat global warming. Again.

National Foam Inc. has petitioned a federal court asking it to hear the company’s challenge to the EPA’s first order requiring PFAS manufacturers and processors to test one of those chemicals.

Boston could set building standards that limit or ban fossil fuel use in new developments and big renovations, Mayor Michelle Wu announced on Tuesday.

Salem Harbor Power Development LP, a power plant backed by Oaktree Capital Management, won bankruptcy court approval of a revised organization plan that hands its ownership to debt holders.

President Joe Biden signed a sweeping tax, climate and health-care measure into law on Tuesday, sealing a major legislative victory ahead of the November midterm elections.

New Jersey residents will be “irreparably harmed” unless a Massachusetts federal judge exempts about 100 offshore turbines from an order blocking use of a General Electric Co.-made windmill, the state said.

Microsoft and Amazon say they’re accelerating a transition to a greener future, but critics argue they’re helping prolong the fossil-fuel age.

A small federal office with a mandate to improve environmental permitting is already working on big plans for the $350 million in new funding it’s set to receive in the climate bill, the head of the agency said Tuesday.

Graphite is a key part of today’s electric vehicle batteries. It’s also tricky for Americans eyeing a tax break for buying climate-friendly cars.