Matt Ridley
"Some weeks ago I wrote an article for The Times about why I no longer find persuasive the IPCC's arguments that today's climate change is unprecedented, fast and dangerous.
I was delighted to receive a long and courteous letter from David MacKay, the chief scientific advisor to Britain's Department of Energy and Climate Change. With his permission I am publishing my reply to that letter. I would put his letter here too (again he agrees), but I only have a hard copy of it, so that will have to follow when he has time to send me a soft version.
The remarkable thing about this exchange is that far from weakening my doubts about the IPCC case, it has strengthened them. The letter explains why. Essentially, I have realised that almost the only weapons left in the alarm locker are the retreat of the Arctic sea ice and an event that happened 55m years ago and was probably not caused by CO2 at all. Everything else -- the CO2-temperature correlation in the Antarctic ice core, the hockey stick, storm frequency, phenology, etc etc -- no longer supports the argument that something unprecedented in magnitude or rate is happening. Remarkable.
Here is my letter: "
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