cybermage writes: "The Guardian broke the story of a new study that says "China overtakes U.S. as world's biggest CO2 emitter". The press has begun echoing the story everywhere without giving it much scrutiny. But, is it true? On a per person basis, the U.S. emits four times the carbon of China. Also, when you consider how much American manufacturing for American consumption is outsourced to China, how can the study be taken at face value?"