Valero Energy Corp.

And you thought the high cost of doing business in California was a bad thing. For the state's motorists, in the case of earthquake- and tsunami-racked Japan, it might actually be a good thing. Refinery companies around the world, including......

A decade-long battle between Los Angeles regional air quality officials, the U.S. Environmental Protection Agency and California public health groups over the integrity of the area's pollution trading system will be rejoined Friday, as air district...

The fight over Proposition 23, the ballot initiative to suspend California's global warming law, "will definitely be a David versus Goliath battle," Steve Maviglio, spokesman for the opponents told a reporter in September. "Our slingshot versus their oily...

When Chevron, California's largest company, looked at how it could wield influence in this election cycle, it shunned Proposition 23, the high-profile ballot initiative to suspend the state's global-warming law. So did Shell, Conoco Phillips and...

In the most closely watched environmental election fight in the country, national conservation groups, Silicon Valley moguls, Hollywood celebrities and California politicians have waged a scorched-earth campaign against Valero Energy Corp., the nation's...

California voters have turned against controversial initiatives to legalize marijuana and to suspend the state's global warming law, a poll from the Public Policy Institute of California found. Voters now oppose Proposition 19, the marijuana legalization...

As election day nears, the debate around Proposition 23 has heated. If passed, it would suspend AB 32, otherwise known as the "global warming law," created to reduce California's greenhouse-gas emissions to 1990 levels by 2020, until unemployment rates...

Opposition to Proposition 23, a November ballot initiative to suspend California's sweeping global warming law, has surged in recent weeks, according to a poll by the Public Policy Institute of California, or PPIC. Among likely voters, 48% say they will.....

Arnold Schwarzenegger, George Shultz, Robert Redford, Bill Gates, James Cameron, Leonardo Di Caprio and Al Gore have all weighed in to oppose California's Proposition 23, a November ballot initiative. Now comes the uber-endorsement for the No on 23...

Backers of Proposition 23, a November ballot initiative to suspend California's global warming regulations, launched a television campaign in Los Angeles Tuesday with a spot warning of job losses and higher electricity costs unless the measure passes. The...

James Cameron, the director of Avatar, the environmental fable masquerading as a 3-D blockbuster, popped a million dollars Friday into the campaign to defeat Proposition 23, a California ballot initiative to suspend the state's global warming law....

California green technology companies and wealthy environmentalists are pouring money into a campaign to defeat Proposition 23, a November ballot initiative that would suspend the state's global warming law. So far, opponents of Prop 23 have raised $16....