re: Did you notice
The recent spike is real, but it is also real that 20,000 years ago, both temperature and CO2 started climbing radically all by themselves. Why? And why all the other times?
BTW, in the natural cycle, while there is plenty of evidence that the two graphs match each other, nobody has yet proven to me which is cause and which is effect. I can think of a lot more things that would drive a temperature cycle than things that would drive a CO2 cycle.
