Executive orders and announcements by President Trump have put billions of dollars in U.S. climate commitments into question.

Newly appointed Secretary of Transportation Sean Duffy wasted no time in rolling back U.S. fuel efficiency regulations.

And that would be unfortunate," the Former DOT secretary told The Verge. "The work we’ve done to make EVs more affordable is ...

Hours after being sworn in as the new Secretary of Transportation, Sean Duffy took aim at the main way the federal government regulates miles per gallon for cars and pickup trucks.

Some of the moves could have major effects for climate change and climate technologies—for example, one of the first orders ...