It is abundantly clear that the upcoming meeting on climate change in Copenhagen, which is to decide on the future of the Kyoto regime, will depend more on the ongoing talks between America and China in Beijing than the concurrent gathering in Bonn under the United Nations’ climate convention (“Heating Up or Cooling Down?” June 13, 2009). The two main polluters, or G2 as they are affectionately called, are in the best position to lead the world in determining the global post-Kyoto agenda. Conveniently, America is in the best position to lead the developed world, and China the underdeveloped remainder. It is therefore to be hoped that American and Chinese officials involved in bilateral talks will put aside their major differences in time for the crucial Copenhagen meeting. Luckily, both countries have much to lose if they fail to cooperate in earnest. And the rest of the world is squarely in their hands. Heating up or cooling down, indeed.