California ramps up efforts to cut greenhouse gas emissions

Building on California's ambitious effort to curb greenhouse gas emissions, Gov. Jerry Brown on Wednesday called on the state to further slash its carbon footprint over the next 15 years. Brown set a new target of reducing emissions to 40 percent below 1990 levels by 2030, calling it the most aggressive benchmark enacted by a government in North America. The goal is a mile marker on the way to cutting emissions by 80 percent from 1990 levels by 2050 that was set by Brown's predecessor, former Gov. Arnold Schwarzenegger.FILE -- In this May 19, 2014 file photo Richard Gray joined others in a demonstration calling on Gov. Jerry Brown to end hydraulic fracturing for oil and gas, in Sacramento,...