California, the state that helped define U.S. clean-air policy, is once again considering how far it can go without ...

California regulators and solar industry stakeholders are denouncing the U.S. Environmental Protection Agency's decision to eliminate the Solar for All grant program, designed to bring solar energy to ...

WASHINGTON (Reuters) -Attorneys general from California and several other U.S. states led by Democrats on Tuesday urged President Donald Trump's administration to abandon its plan to rescind the ...

The Environmental Protection Agency has moved to block a California regulation aimed at reducing emissions from diesel trucks, arguing that it serves as a backdoor emission rule that would be imposed ...

The U.S. Supreme Court ruled that fuel producers have standing to challenge the Environmental Protection Agency's move allowing California to impose regulations on automakers pertaining to vehicle ...