There’s an interesting article here about the seven largest producers of greenhouse gases. They are China, the United States, India, Brazil, Russia, Germany, and the United Kingdom. I found some of the issues mentioned in the article remarkable non sequiturs. Does it really matter what your emissions per square mile or even per person are? There’s also a surprising omission: trends are not mentioned. In the United States the total emissions and emissions per additional dollar of GDP have been stable or falling. In China and India they’re rising sharply. Germany, too, has seen its emissions increase recently albeit from a much, much lower level. See this chart.
Nonetheless, the U. S. still has a lot of low-hanging fruit left to pick in this area and a lot could be done without tremendous cost. Conversion from coal to natural gas may even do a lot of the heavy lifting for us, as it has been doing in recent years. As in so many areas I’d rather have our hand than China’s.