The Supreme Court heard oral arguments Wednesday in a landmark case that could spell the end of California’s Clean Air ...

California's extreme electric vehicle mandates influence 18 other states that copy them. The left coast ends up setting ...

The Supreme Court indicated Wednesday that it will revive a lawsuit from fuel producers challenging California’s strict ...

The justices seemed to agree that fuel producers are harmed by—and should therefore be able to challenge—an EPA waiver that ...

The Congressional Review Act resolutions would nullify EPA waivers under the Clean Air Act, waivers for rules that would ...

In a move that stunned environmental advocates, the US Department of Justice (DOJ) under Trump dropped a high-profile ...

U.S. Supreme Court justices appeared sympathetic on Wednesday to a bid by fuel producers to challenge California's standards ...

At issue is not the legality of California’s authority to enforce tougher vehicle emissions rules, but rather whether fuel ...

Donald Trump's EPA says coal plants and other industrial polluters can ask to bypass provisions of the Clean Air Act by sending the agency an email.