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A great deal of government policy is based on the certainty that global warming is the biggest threat to our future thanks to increased levels of carbon dioxide in the atmosphere.

That is why the country is overrun with wind farms and energy costs are skyrocketing, with green stealth taxes adding 15 to 20 per cent to the average domestic power bill. And this is all done on the authority of scientists who, we are repeatedly told, must have got the arguments right.

Last week, one of their number even claimed to have ended the entire climate debate, definitively proving the sceptics wrong.

Professor Richard Muller of Berkeley University in California published a report which shows the planet has warmed by almost a degree since 1950 and is still continually warming. In the words of the professor, there can be ‘little room for doubt’.

Now his co-author, Professor Judith Curry, has said this is not remotely the case. She says the research data shows there has been no increase in world temperatures for a decade.

Given this contradiction, isn’t it time for the Energy Secretary, Chris Huhne, and other ministers, to at least open their minds about climate change?

They are – many would say arrogantly – sure they are right and stubbornly parrot the scientists as they make the case for being the ‘greenest government ever’. But what if they are wrong?

Mail on Sunday, 30 October 2011