Fluctuations and change
No one doubts cliates fluctuate.
Many doubt, with good reason, the idea that industrial activities are causing this fluctuations, since current levels of change have occurred in ages long before the rise of technical civilization.
Also, the comment I posted was specific in regards to false claims printed in the NYT and elsewhere regarding a melting Arctic, etc.
The scale of human produced waste gasses into the atmosphere is much less than that produced by natural processes. It is weak to say the least to build models fail to account for this fact.
Ed