It's certainly right to say that the Earth's climate has always fluctuated - about a thousand years ago there was another warm period, hence the Vikings were able to undertake journeys and establish settlements in places which would not be possible now - and name Vinland after wine. We also grew Saffron in England in the early middle ages hence Saffron Waldon. We are, once again in a warm period even without man made intervention but the danger is that man's intervention will lead to this warm period getting out of control. It's certainly true to say that China is a problem as a whole, but their emissions per head are significantly below those of Germany, the USA or the UK. Also a lot of Chinese production is there to provide goods which we buy - so who is at fault there, the producer or the consumer. I am doubtfull about the whole concept of 'green' growth - the idea that we can go on consuming as before, just with other technology - like a kind of techno fix solution. What we need to do is to be able to imagine such a thing as a post growth society - where we accept that we don't need to always produce more but rather reallocate what is there more fairly.