The Economist magazine offers something unusual: smart coverage of the IPCC climate change report.

Heating up

“It is unsurprising because, while some of the figures differ from those in the third assessment report published in 2001, the changes are minimal and its broad conclusion, that something serious is happening and man is in part responsible, remains the same (though the authors now say that man is “very likely” responsible, rather than just “likely”).”

“Studying the climate reveals new, little-understood, mechanisms: as temperatures warm, they set off feedback effects that may increase, or decrease, warming. So predictions may become less, rather than more, certain. Thus the IPCC’s range of predictions of the rise in the temperature by 2100 has increased from 1.4-5.8C in the 2001 report to 1.1-6.4C in this report.”