i don't think we'll see much changes in our lifetime either, yet global warming does seem to be an issue. with the ozone layer having been messed as it has, the sun is coming in much hotter....besides the fact that is protects from the sun's rays. with earth being heated up as it is, i don't know.i think we could see a global warming. humanity has done much to destroy earth, one day or another we will have to reap what we sow.