California has decided to abandon its phase out of diesel trucks and requiring cleaner locomotives because of the incoming ...

Several environmental groups are suing California air regulators over their recent update of a contentious climate program, ...

California has withdrawn requests for the EPA to give the state authority to enforce rules limiting emissions from ...

California has withdrawn requests for the EPA to give the state authority to enforce rules limiting emissions from ...

President-elect Trump has threatened to revoke or challenge all zero-emission vehicle rules and California’s other clean-air ...

California regulators say the Trump administration is unlikely to approve the rules and that they have no choice but to ...

The California Air Resources Board said Tuesday it withdrew its requests for federal approval to implement stricter emissions ...

The California Air Resources Board (CARB) has scrapped its controversial rule that would have required the use of zero-emissions locomotives in the state ...

While we are disappointed that U.S. EPA was unable to act on all the requests in time," a state official said.