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

California has withdrawn requests for the EPA to give the state authority to enforce rules limiting emissions from ...

California has withdrawn requests for the EPA to give the state authority to enforce rules limiting emissions from ...

Because Trump is unlikely to approve them, California has no choice but to abandon its groundbreaking rules for zero-emission ...

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

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

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 ...

In order for California to promulgate vehicle emission standards without violating the Clean Air Act, it must receive a waiver from the EPA for any state law that regulates vehicles covered by the Act ...