What evidence will it take to convince climate sceptics?

The Guardian

Leo Hickman

So, that's it then. The climate wars are over. Climate sceptics have accepted the main tenets of climate science - that the world is warming and that humans are largely to blame - and we can all now get on to debating the real issue at hand: what, if anything, do we do about it?

If only. Yesterday's announcement by Prof Richard Muller that, as a result of his Berkeley Earth Surface Temperature (Best) project's research, he had undergone a "total turnaround" in his views on climate science and now accepted that the Earth's land has warmed by 1.5C over the past 250 years and that "humans are almost entirely the cause", might be seen by many as a watershed moment in this long, often bitter debate. But not, it would appear, for climate sceptics - the very people he designed his project to please.

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