Oil Firms Break Promise on Biofuels as Chevron Defies California

Oil Firms Break Promise on Biofuels as Chevron Defies California

David Paul Morris/Bloomberg

An employee works on a Chevron Corp. sign at a gasoline station in San Francisco, California. Like other major investor-owned oil companies, Chevron and ExxonMobil accept climate-change science and acknowledge carbon emissions contribute to global warming.