What the graph does, currgra, is identify a whole series of issues that are associated with AGW. If you want to examine the relationship between greenhouse gases and both natural warming and what we are causing then you can find a wealth of information on the web. The underlying science has been accepted for over 100 years. If you want to deny that science the way some others do on this forum, that is entirely your decision. However if you class yourself as a real sceptic then you will want to look at the science.
Here is a reasonably accessible link. According to the Australian Museum, it gets over 500,000 hits a month so presumably it must have something going for it. I really like this presentation because it directly quotes 13 well known "skeptics" including "concedo" Chris Monckton, doctor Roy Spencer, journalist Richard Lindzen, perennial denier Roger Pielke, Sr. and real sceptic Judith Curry.
