Sorry but I'm not going to jump on this band wagon.
Can I start off by saying that I am pro environmental issues and support cutting human generated emissions into the environment but reading this thread gets me so angry. So many of you are acting as though there is no cause for debate here. There is!
As for the arguement that 'scientists all agree' about global warming; that's laughable. Scientist generally discover whatever the organisation funding their research want them to find. The scientific community is more split on this issue than you people are
I have read a lot about the GW issues over the past few months and the conclusion I've come to is that although GW still hasn't been proven there is enough observational evidence for us to assume that it is probable.
Therefore we need to take measures to limit our carbon emissions.
I know some of you are going to get all stroppy because I said GW hasn't been proven please bear in mind a few points,
O-zone layer - Mankind has never observed the Ozone layer without holes - we assumed that it once didn't have them (never a good thing). And over the past 10 years the holes in the Ozone layer have been seen to get bigger and smaller seemingly at random. This has led to a new theory that it was never a singular sheet that covered us but more like a colection of gas which moves freely. We have no idea if it has got smaller over the years (as we can't measure it's total volume, only its blanket coverage)
Ice caps - Again, through observational evidence only we assumed that as the surface of the ice caps had apparently warmed by 1degree on the surface and some bits of the caps were becoming unstable that the ice caps were shrinking. That's just plain wrong -
A study published in the American Meteorological Society's Journal of Climate (Yuan, X. and Martinson, D.G., "Antarctic sea ice extent variability and its global connectivity," Volume 13: 1697-1717 (2000)) demonstrated the Antarctic polar ice cap has been expanding. According to the study, 18 years of satellite data indicate the mean Antarctic sea ice edge has expanded by 0.011 degrees of latitude toward the equator each year.
CFC's - We assumed that our environment couldn't release or neutralise CFC's because we couldn't replicate that effect in a laboratory environment. The idea was that because CFC's have a life span of 50-100 years they would stay in our environment until about the year 3000. Well guess what, they didn't. There are still CFC's in our stratosphere but only relative to the amount the 3rd world still uses. Therefore CFC's- although not a good thing- were far too over hyped by the scaremongers
There are just 3 areas where the latest environmental band wagon of its time got things pretty wrong.
As I said at the start, I think we should limit our CO2 emissions, not because they are definately dangerous but because there is evidence that they probably are