I have been conscious that I should have been trying to get to grips with the leaked WGII Summary for Policymakers but, with one thing and another, I haven't even made a start.
So it's just as well that James Delingpole is on the case, and making rather more than a start.
Previous reports - notably the hugely influential 2006 Stern Review - have put the costs to the global economy caused by 'climate change' at between 5 and 20 percent of world GDP.
But the latest estimates, to be published by Working Group II of the IPCC's Fifth Assessment Report, say that a 2.5 degrees Celsius rise in global temperatures by the end of the century will cost the world economy between just 0.2 and 2 percent of its GDP.
If the lower estimate is correct, then all it would take is an annual growth rate of 2.4 percent (currently it's around 3 percent) for the economic costs of climate change to be wiped out within a month.
Blimey.
[PS James - I know! I still haven't reviewed your book yet. I will!]