Reuters: California on Wednesday said it would take several measures to ensure corn ethanol can help transportation fuel suppliers reach a proposed low-carbon fuel standard that is expected to be passed by the state on Thursday. California’s Air Resources Board “believes that corn ethanol will play an important role in helping California achieve the goals of the (low carbon fuel standard),” the state’s top air quality regulator, Mary Nichols, said in a letter to General Wesley Clark, co-chair …