I think the problem is that scientists are getting their theories and conclusions polluted (forgive the pun) by politics, and then reported by less-than-unbiased media. I remember past scares involving "Global Cooling" and "The Coming Population Bomb", both of which were apparently concocted to 1) Increase university funding, and 2) Sell newspapers and magazines. So you will forgive us sceptics who don't take as gospel everything shouted to the hilltops by Academia these days. Personally, I can think of half a dozen good reasons to reduce our use of fossil fuels, but "Global Warming" ain't one of them. I think we may be in the first stages of a climate change, but I see no reasonably conclusive evidence it is man made.