The preponderance of future growth in global greenhouse gas emissions will take place in developing countries such as China and India, which is why stopping global warming must be a truly global effort.
But a global response to global warming is impossible, as I’ve been arguing for a long time, because there is no precedent for interstate burden-sharing of this magnitude, short of war. The International Energy Agency estimates that it will cost $45 trillion to limit warming to 2 degrees…



