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

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

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 ...

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.

California gas prices are projected to significantly increase due to refinery closures and stringent state regulations, ...

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 ...