Following the eco-friendly order, the California Air Resources Board will begin developing regulations that mandate 100 percent of in-state sales of new passenger cars and trucks are zero-emission.

Trucking companies and local governments warn the California Air Resources Board that the mandates would be unachievable as environmental justice advocates laud the ambitious regulation they ...

Though some factions are doing so in low-key kicking and screaming fashion, the world is slowly but surely beginning to dial back its reliance on fossil fuels. But as the tide begins to turn on ...

California fights America's worst smog with the country's toughest environmental regulations. But is the Golden State really ...