Spiegel: SPIEGEL: The US and China are responsible for 40 percent of global CO2 emissions. Should the two countries find a solution to global warming between themselves? Jonathan Pershing: My impression from our talks in Beijing is that China does not want to reduce the global climate talks to US-Chinese talks, to a kind of G-2. Like us, they want this to be part of the UN process. There are tasks we can pursue bilaterally, but ultimately the whole world has to agree on the framework to combat …