The Forbes (Ferrara) piece is premised almost entirely on a talk given by Don Easterbrook at the 2012 Heartland Institute Climate Change Conference. In Easterbrook's talk, he presented supposed IPCC data. It has since been shown that the data he presented were highly selective and possibly manipulated. This is so well known and documented that you can find many explanations and illustrations of this on your own with our friend Google. Sadly Ferrara's understanding of climate science is insufficient for him to spot what is clearly an egregious distortion, so his piece made it into print, and can then be cited by others as some kind of "evidence". Find the original data sources, and it all falls apart. It is a classic anthropogenic climate change denier cherry pick.