The scare over global warming, and our politicians' response to it, is becoming ever more bizarre. On the one hand we have the United Nation's Intergovernmental Panel on Climate Change coming up with yet another of its notoriously politicised reports, hyping up the scare by claiming that world surface temperatures have been higher in 11 of the past 12 years (1995-2006) than ever previously recorded.
This carefully ignores the latest US satellite figures showing temperatures having fallen since 1998, declining in 2007 to a 1983 level - not to mention the newly revised figures for US surface temperatures showing that the 1930s had four of the 10 warmest years of the past century, with the hottest year of all being not 1998, as was previously claimed, but 1934.
On the other hand, we had Gordon Brown last week, in his "first major speech on climate change", airily committing his own and future governments to achieving a 60 per cent reduction in carbon emissions by 2050 - which is rather like prime minister Salisbury at the end of Queen Victoria's reign trying to commit Winston Churchill's government to achieving some wholly impossible goal in the middle of the Second World War.
Ah well, politicians believe in a lot of improbable things, like the efficacy of holding Arab-Israeli peace talks.