Gas-powered cars and diesel trucks remain the state’s largest sources of smog and soot despite decades of cutting emissions.

With 7 of its most ambitious rules for cars, trucks and trains repealed, California officials now must find new ways to clean up the nation’s worst air pollution. But officials face growing pushback ...

With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the ...

The state's ambitious Climate Superfund legislation would hold fossil fuel companies liable for emissions, but continues to face fierce opposition.

President Trump has battled California Gov. Newsom over wildfires, immigration, environmental rules, and vehicle mandates as ...

California energy officials are walking a political tightrope, defending some of their climate rules while conceding others ...

The state quickly announced it was challenging the move in court, with California’s attorney general holding a news conference before Trump’s signing ceremony ended.

According to the White House official, Trump is expected to sign resolutions that block California’s rule phasing out gas-powered cars and ending the sale of new ones by 2035. He will also kill rules ...

Friday's rule, combined with previous electric truck regulations approved by the state, would mean more than 1.6 million zero-emission medium- and heavy-duty trucks would operate in the state by 2048.

FILE - A truck departs from a Port of Oakland shipping terminal on Nov. 10, 2021, in Oakland, Calif. On Friday, April 28, 2023, California regulators voted to end the sale of new diesel-powered ...