With 7 of its ambitious rules for cars, trucks and trains repealed, California officials must find new ways to clean up the ...

With an increase in the number of World Cup matches to more than 100, a report claims it will be the most polluting tournament ever staged ...

There's an exception for certificates that demonstrate a car's compliance with federal, state or local laws, such as an ...

Electric cars are increasingly common due to their potential environmental benefits, but a new study suggests that high ...

Gas-powered cars and diesel trucks remain the state’s largest sources of smog and soot despite decades of cutting emissions.

Air pollution was responsible for 1.1 million deaths across Africa in 2019, with household air pollution—driven largely by indoor cookstoves—accounting for 700,000 fatalities, while increased outdoor ...

California has been allowed to enact tougher rules under the 1970 Clean Air Act – so long as it obtains waivers – because the state has historically had the worst air pollution in the nation.

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