The mostly Democratic-led states say that the E.P.A. acted unlawfully when it erased Biden-era limits on carbon dioxide from ...

Reducing fuel-efficiency standards will raise prices at the pump and produce more harmful emissions, according to environmentalists.

The White House's new fuel economy rules set an industry-wide target of 34.9 mpg by 2031, which is far more relaxed than before.

States and cities are suing the Trump administration for repealing rules that limit planet-warming greenhouse gas emissions ...

The US Supreme Court was hearing arguments on Monday in a case that could determine the fate of dozens of climate lawsuits ...

The US president said he would end a so-called ‘EV mandate’ that steered consumers to electric vehicles.

PA lawmakers unanimously passed new legislation in the Senate Monday that would ban "nudification" apps from being developed, operated, and made in the state.Th ...