Climate has always changed  years ago sea levels were so low that it was possible to walk to the mainland Europe from the UK  The tide of opinion is moving against AGW  and certainly against CO being particularly potent cause of climate change     Rather than surveying scientists look at the fundamentals  Effects of water are dominant over CO   Im told that IPCC models apply controversial positive feedback factors to enhance the effect of CO and using values that are too high would explain why their models do not fit recent observations  Illustrative links follow   Water vapour dominates httptimeforchangeorgradiationwavelengthandgreenhouseeffect Beyond thst clouds complicate the effects of water which in a complete study needs to be considered in its three phases  However global mean temperature does not correlate with atmospheric CO concentration on a geological time scale httpwwwpaulmacraecomp  nor using accurate modern data httpwwwcheadlinescomglobalwarmingsciencefactscoolinghadcrutipccgoldstandardhtml  You dont have to accept the above graphs  You can do your own research  However I expect that you will find that that they do illustrate the points succinctly and that you will confirm them  I do appreciate that a huge range effects with differing timeconstants involved in determining climate and that there are significant statistical uncertainties  One needs to go into far greater detail but thats it in a nutshell  For a proper debate one would need to go beyond the scope of the article