On what evidence???? I dont reckon it's any hotter now than when I was a kid (Im 43 now) in fact, I reckon the winters are colder if anything. As for comparing satelite photo's, oh please, I have looked high and low for satelite photo's taken in 1906 but guess what!!! There isnt any, comparing say 1980 pics to today is useless, it isnt long enough, even elnino has an 11 year cycle, polar ice comes and goes regularly, and what sea levels???? Where is there evidence that they ar higher? Dont tell me they are higher in the north Pacific coz water levels are the same everywhere thanks to gravity, the jetty I used to swim off when I was a kid is still there today and is not one centimetre closer to the water. Please please dont post dumb comments like it's warmer or they tell me so unless you have irrefutable evidence to back it up, evidence based on at least a thousand years of measurements. In the 70's it was ozone depletion due to CFC's today it's global warming, whatever happend to that poor old ozone layer??? Oh yeah, we woke up to the fact that even the lightest CFC is 7 times heavier than air and cant float up that far, it was all a furphy computer model scam designed by Dupont to make you buy the new gas (R12) because they couldnt renew the copyright on the old one's they owned, that is fact and you can research it any time you like. Billions were made out of that scam, in fact the old CFC's were far more efficient at refrigeration and saved lives by the thousands in hosptials but that didnt stop us believing the multi national compaines, go to the library and borrow a book called the Green Hoax Effect, it might just wake a few of you up. If any of you truly believed for one second that burning coal was destroying your way of life you'd turn your computers off, hmmm, maybe no one will respond after me saying that? I guess I'm a little shaken that my fellow amatuer scientists are gullable enough to believe this nonesense without actually getting off the internet and doing some basic tests. Fill a glass with ice, top up with water to the very rim and watch it melt, if any of you can make it overflow I will shut up, in fact, if you care to measure it you will find you have less water, it's simple chemistry that we all learned in grade 3.