The U.S. Dept. of Transportation’s Federal Highway Administration released a final rule April 18 rescinding requirements that states track tailpipe emissions of greenhouse gases and set goals to ...

U.S. Supreme Court justices appeared sympathetic on Wednesday to a bid by fuel producers to challenge California's standards for vehicle emissions and electric cars under a federal air pollution law ...

SACRAMENTO, Calif. -- The Republican-controlled U.S. House voted Thursday to block California from enforcing first-in-the-nation rules phasing out the sale of new gas-powered cars by 2035.

The original rule, which had been tied ... declining targets for carbon dioxide emissions and require states to measure and report the changes in tailpipe emissions. The Trump administration ...

(AP) — The Republican-controlled U.S. House voted Thursday to block California from enforcing first-in-the-nation rules phasing ... standards to cut tailpipe emissions from medium- and heavy ...