One of the more touching features of our global warming zealots is their remarkable ignorance of history. As their religion crumbles, they clutch ever more desperately at any “extreme weather event” to support their sad creed. Hot or cold, dry or wet, droughts, heatwaves, floods or record falls of snow are all inevitably cited as evidence of mankind’s “disruption of the climate” – even if cussed old Mother Nature has produced such things hundreds of times before.