“This is what authoritarians do. This is what fascists do," historian says, warning to take Trump threat seriously

It took 50 years, but California clean-air regulators never surrendered — and the electric future is here

The agency wants more ethanol, biogas, and wood pellet power in the nation's fuel mix. Is that really a good thing?

Millions of Americans will lose their Medicaid coverage under the Senate's health care bill

They want to burn it all down so that they can rule over the smoldering ashes

The Obama administration promises 54.5 miles per gallon by 2025. Critics are skeptical

When Trump left the accords, these states tried to go all in

Last week's GOP debate illustrated the devil's bargain on climate — but Big Oil may pay for it in the courtroom

The mainstream news media is continuing to miss an obvious and critically important aspect of Trump's plans

As more cities ban single-use plastic, Hawaii considers a statewide ban

It may be hard to believe, but Donald Trump is fading from some people's memories. It's time to remind them

Trump shared a dark post showing what voters expect from a potential second term