text: It is not that simple to tell who is and who is not a climatologist or an expert on climate change and global warming. Ross McKitrick once said that ?there is no such thing as an ?expert? on global warming, because no one can master all the relevant subjects. On the subject of climate change everyone is an amateur on many if not most of the relevant topics.? (as quoted by R. M. Carter, ?The Futile Quest for Climate Control,? Quadrant, November, 2008, p. 10; online atwww.quadrant.org.au/magazine/issue/2008/451/the-futile-quest-for-climate-control). In his recently published book Climate: The Counter Consensus (2010), Prof. Carter suggests that ?scientists who study climate change come from a wide range of disciplines? which he ?groups into three main categories? (p. 22). He claims that ?most of the scientific alarm about dangerous climate change is generated by scientists in themeteorological and computer modeling group, whereas many (though not all)geological scientists see no cause for alarm when modern climate change is compared with the climate history? (p. 23). This structuring seems to be useful.