The California Air Resources Board is pushing to have its controversial clean air rules go into effect July 1 after a state office blocked them from going into effect earlier this year.

Pain at the pump? California gas prices, already the highest in the nation, could get even more expensive. Here's why.

If it chose to do so,” he said. Some of the regulatory costs include making California gas that is up to the state’s standards, as the fuel is much cleaner than what is used in the rest of the ...

State and local authority over air quality will be jeopardized if Congress revokes California’s auto emissions limits, ...

Congress is one step closer to barring California from enforcing its own emissions standards and banning sales of gas-powered ...

If it chose to do so,” he said. Some of the regulatory costs include making California gas that is up to the state’s standards, as the fuel is much cleaner than what is used in the rest of the country ...