A legal battle between the Trump administration and the state of California over vehicle emissions policy is about to get hot ...

Among car enthusiasts, California is a complete paradox. Yes, it's the birthplace of hot rod culture, and its stunning driving roads ribbon from San Diego to Redding and Death Valley to the Pacific ...

The state took a first small step toward requiring that dairies and livestock operations reduce their emissions of the ...

Several states claim Congress acted unconstitutionally when it "disapproved" of waivers that allowed states to set stricter ...

Even though state-level transportation policy faces federal headwinds, California still retains significant autonomy to make ...

(Reuters) -The U.S. government said on Friday it sued California to stop the state from enforcing stringent emissions standards for heavy-duty trucks that President Donald Trump recently declared void ...

In a new report published and submitted to California Governor Gavin Newsom on August 19, regulators outlined how the state can continue its initial goals. The State of California is making a ...

The unprecedented move is Republicans’ latest attempt to undermine California electric vehicle policies. EPA will allow Congress to review and potentially reverse a trio of waivers that give ...

The U.S. Environmental Protection Agency has issued a waiver to the California Air Resources Board allowing the state to implement and enforce its Omnibus low-NOx emissions regulation for heavy-duty ...

President Donald Trump's Environmental Protection Agency (EPA) Administrator Lee Zeldin is making good on his promise to prioritize efforts to "roll back regulations," and on Friday submitted waivers ...

A new analysis assails a program that lets major emitters pay for projects such as forest preservation instead of cutting their own emissions. A California program that lets polluters avoid cutting a ...