The regulation will make hundreds of thousands of homes more energy efficient. But Republican officials and a homebuilders group say it’s costly and illegal.

Richard Alley, Lawrence Edwards and David Tilman were among the two dozen honorees recognized Friday.

The tech giant has pledged that all data centers serving its cloud by this year will have power purchase agreements for 100 percent low-carbon energy.

EPA has about two weeks to grant the state’s remaining requests to regulate trains and trucks.

The cars promise an almost emission-free road life with a gas-powered safety net.

Plenty Unlimited’s shifting strategy reflects larger struggles for the once-promising indoor farming industry.

The plans stem from a bill on protecting civilians that took effect Wednesday, prompted by recent flooding and by security tensions due to the war in neighboring Ukraine.

A top aide to the president-elect wants tighter control over the National Climate Assessment.

Anne Idsal Austin, who spent more than a year as acting head of EPA's Office of Air and Radiation, is helping with the president-elect's transition effort.

The embattled speaker will have to help settle deep divisions on energy policy and climate action. Is he up to the task?

A state court rejected an effort to dismiss Vermont's claims that companies misled consumers about the dangers of burning fossil fuels.

State officials want Elon Musk to target the office through the Department of Government Efficiency.

It's the only state not to allow property insurers to include reinsurance costs in their rates.

The ability to store large amounts of electricity was essentially nonexistent a decade ago, but the U.S. had about 24 gigawatt-hours in operation last year.

The goals of what is known as “congestion pricing” are to reduce gridlock and pollution and raise revenue for public transit.

Other banks that have recently quit the Net-Zero Banking Alliance include Goldman Sachs Group and Wells Fargo & Co.

The president-elect has vowed to stop climate lawsuits against the oil industry and is expected to change the U.S. position in fights over planet-warming emissions.

With more than 30 lawsuits filed against them, major oil and gas companies say only the justices can save them from “ruinous” litigation.

Three interrelated trends — growing energy demand, rising costs and worsening climate impacts — will shape statehouse action in 2025.

The "My Safe Florida Condo" program is the first state effort to help condominium associations protect buildings from hurricane winds.