i guess i'm sceptical that an international or human identity could be forged that would allow us to organize into a single international polity. the idea of climate crisis is - more than it is science, i think - an attempt to motivate this development: it is an attempt to forge us into a single worldpeople. without a global threat requiring global cooperation, there would be all sorts of resistance to an international political regime. barring alien attack, climate crisis is about as good as we're going to do. if there were a crisis the only answer to which seemed to be radical decentralization, it would not be a very popular crisis, as demonstrated many. many times by every concentration and pervasion of political power. this is why climate change is more than "science": it is a means of pushing forward a particular political vision. that is not to say that it's all crap; like i always say, i'm not realy in a position to evaluate the data. but a healthy scepticism would make use of the way the motivations and constituencies flow together. al gore or tom friedman find the idea of climate crisis extremely useful in pushing forward an entire political agenda in every area, a world squishy totalitarianism.