Actually, the non-sequitur was yours. What happened before says nothing about the causes of what is happening now. The argument you made is simply not related. The earth has warmed and cooled before for many reasons, but that fact has no bearing on whether the science saying that "this time it is CO2", is correct or not. That's why that example was used. http://www.reuters.com/article/2014/02/15/us-china-usa-clima...China takes it a lot more seriously than the US House of Representatives or a fair mob of US Senators. http://www.huffingtonpost.com/barbara-a-finamore/what-is-chi...Moreover, they are working harder at it than the US even now.