I have said right from the beginning, starting fifteen years ago, that I was unconvinced by arguments for anthropogenic global warming for the simple reason that there is no correlation between human activity and global changes in climate.

People who think as I do have been compared to holocaust deniers, heretics, creationists, crop circle enthusiasts, and religious fanatics. The difference of course, is that the climate alarm sceptics are the ones who are focussing on the evidence – what is really happening in the real world.

The world has certainly warmed slightly – just over half of one degree Celsius – over the last 150 years. And a darn good thing it is. It is possible that there may have been some human influence on this, although so far as I can see, there is no evidence outside of computer modelling that supports this hypothesis.

Yet we are constantly told that we must ‘take action now’ to prevent a huge catastrophe. Even though there no reason at all to believe that such a catastrophe is really on the way, I would not object to people ‘taking action’ if it made them feel better, if it were not for the enormous cost to everyone else of these utterly pointless projects.

From Matt Ridley:

Well here’s why it matters:

The alarmists have been handed power over our lives; the heretics have not. Remember Britain’s unilateral Climate Change Act is officially expected to cost the hard-pressed UK economy £18.3 billion a year for the next 39 years and achieve an unmeasurably small change in carbon dioxide levels. At least sceptics do not cover the hills of Scotland with useless, expensive, duke-subsidising wind turbines whose manufacture causes pollution in Inner Mongolia and which kill rare raptors such as the griffon vulture.
At least crop circle believers cannot almost double your electricity bills and increase fuel poverty while driving jobs to Asia, to support their fetish.
At least creationists have not persuaded the BBC that balanced reporting is no longer necessary.
At least homoeopaths have not made expensive condensing boilers, which shut down in cold weather, compulsory, as John Prescott did in 2005.
At least astrologers have not driven millions of people into real hunger, perhaps killing 192,000 last year according to one conservative estimate, by diverting 5% of the world’s grain crop into motor fuel.

That’s why it matters.

That was from Ridley’s Angus Millar Lecture to the Royal Society of the Arts, Edinburgh, 31 October 2011.