California's affordability crisis could lead to more relaxed emissions standards, according to a plan introduced by state ...

California air regulators are likely to hear a barrage of criticism Thursday on a plan to slash fossil fuel use and reach carbon neutrality by 2045, a proposal that would require a sweeping shift ...

California emissions proposal would devastate Arizona, Nevada, U.S. economy — and the environment This shows the Phillips 66 refinery in Wilmington near Long Beach.

SANTA CLARA COUNTY, Calif. — Gov. Gavin Newsom was in Santa Clara County on Wednesday to speak about first-in-the-nation zero-emission vehicle investments as laid out in his state budget ...

The U.S. Environmental Protection Agency plans to repeal all greenhouse gas emission standards for light-duty, medium-duty, ...

The proposal regards a previously submitted smog control plan for the San Joaquin Valley, which has long had some of the nation’s dirtiest air.

WASHINGTON — California is calling for zero-emission vehicles, including plug-in hybrids, to make up nearly 70 percent of new-vehicle sales by 2030, as part of an aggressive timeline set by the ...

In addition, 15 other states — including New York, Massachusetts and North Carolina — have previously followed California’s moves regarding tailpipe emissions and may adopt similar proposals.

California is often touted as a leader on U.S. climate policy and it has set some of the most aggressive rules for regulating vehicle emissions.