Bloomberg: Western governments pushing China to use clean-coal technology may need to lower their expectations for the world’s largest producer of greenhouse gases. Costs will total as much as $US400 billion ($474 billion) over 30 years to install systems to capture carbon dioxide from power plant smokestacks in China and bury it underground, said Richard Morse, a Stanford University research associate and author of a study on the technology. China has little incentive to invest because it will …