RE: Letters from Anthony Weeden, a correspondent who insists man-made global warming is scientifically unproven.

ANTHONY Weeden’s letter in your February 5th issue is typical of his selective “science”. Does he respond to my challenge to provide evidence for previous assertions about global temperature in the last 2,500 years? No, he does not.

Instead we get a typical selection of facts and quotations. Britain’s single most destructive tornado occurred in 1950: what about the 11 separate tornados that struck the country on 24th September 2007? No increase in the number of hurricanes over recent years: but what about their intensity?

Great glee over the cold spell in Britain: but elsewhere? Google on “hottest January”, and you find that’s what much of the world has just experienced.

They’ve had to import snow to Vancouver for the Winter Olympics.

There’s even one set of satellite data citing last month as the hottest January globally since such records began in 1979.

It’s an el Niòo year, when weather turns topsy-turvy over much of the globe. The last such year was 1998, the hottest since global temperatures were first systematically recorded: this year could easily turn out hotter.

But Weeden’s most unscientific and most disgraceful assertion is that the Copenhagen Conference was some sort of jamboree, rather than a sincere, desperate attempt to combat a global problem that could ruin the lives of our grandchildren. Has he got any grandchildren?

Eric Alexander, Chestnut Avenue, High Wycombe.