It always has and always will. 250,000 years ago, the atmosphere was far more polluted than it is today due to volcanic activity. We are still emerging from the most recent ice age. Within that overall change there have been, and there will continue to be ‘blips’. In the 1880s, there were some very cold winters, so much so that our local library when I lived in Surbiton had photos of the Thames frozen all the way across, with people skating on it, and in one of them an ox being roasted out on the ice. The Krakatoa eruption of 1883 caused the world’s average temperature to drop by 2C (Wiki claims only 0.4C and I can’t remember where I read the 2C figure – it was a good while ago) and - IIRC - it took over a year for things to return to normal. I have no doubt that human activity affects the climate, but there are conflicting views as to how significant it is. To my mind the green lobby’s hysteria is ill-founded and threatens to see personal living standards considerably reduced for the less well-off as ‘green tax’ after ‘green tax’ is heaped upon us to achieve ‘carbon zero’
Mike
