As the largest emitter of carbon dioxide in the world, how much coal China is burning is of global interest, writes Valerie J. Karplus of the MIT Sloan School of Management. According to Karplus, an expert on Chinese energy, China's reported leveling off of coal use may be both real and sustainable. Nevertheless, there is one scenario in which coal use could easily go back up again: high oil and natural gas prices. In addition, it is likely that … [Read more...]