ClimateBiz: A week after taking aim at greenhouse gas emissions produced by chip makers, California has set its sights on a new target: climate change pollution generated by transportation fuels. The California Air Resources Board (CARB) released proposed regulations for a Low Carbon Fuel Standard last week to reduce transportation fuel emissions 10 percent by 2020. By requiring fuel providers to sell cleaner fuels, regulators expect about 20 percent of fuel used in the state will be supplanted …