The number of plants that transform coal into chemicals, gas or automotive fuel in China’s less-populated regions is ballooning, obscuring the carbon emissions outlook for China in the wake of President Xi Jinping’s recent joint declaration with US President Barack Obama, The Financial Times reported. Emissions from the industry are proving difficult to measure and could undermine the country’s greenhouse gas projections. Nobody knows how many may ultimately be built, nor how much emissions they will produce; by some estimates, emissions from the coal-to-chemicals plants in the pipeline could add up to between 4% and 11% of China’s current emissions.