With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the nation’s worst air quality.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

California air regulators repealed a state rule Thursday that would have mandated rail operators phase out the diesel locomotives that traverse the state, but failed to get necessary federal approval.

California sues President Trump for blocking its clean-air rules for cars, trucks — and vows to set new mandates Trump signed measures Thursday revoking waivers for the state's mandates that ...

He will also kill rules that phase out the sale of medium- and heavy-duty diesel vehicles and cut tailpipe emissions from trucks.

Maryland's plan to phase out gas-powered vehicles was dealt a setback Thursday when President Donald Trump blocked California's first-in-the-nation rule banning the sale of new gas-powered cars.

During the bill signing ceremony at the White House, Trump took aim at the alleged impact of California’s automotive rules that aimed to phase out internal combustion engine-powered (ICE ...

Last month, Congress used the Congressional Review Act to revoke three waivers that the Biden administration granted to California to set standards phasing out gas-powered cars and diesel trucks.

Trump axed a California rule requiring all new cars sold by 2035 to be electric or plug-in hybrids. Getty Images Trump also announced plans to prohibit the construction of new windmills.

SACRAMENTO, Calif. (AP) — California should pause Gov. Gavin Newsom's plan to penalize oil companies if their profits climb too high, a top energy regulator said Friday while unveiling proposals ...

President Donald Trump signed a resolution on Thursday that blocks California's first-in-the-nation rule banning the sale of new gas-powered cars by 2035.

President Donald Trump on Thursday is signing three congressional resolutions that target California's statewide efforts to adopt electric vehicles and phase out diesel engines and the sale of gas ...

President Donald Trump on Thursday is signing three congressional resolutions that target California's statewide efforts to adopt electric vehicles and phase out diesel engines and the sale of gas ...