[SIKSUKR]

I don't think there is much of an argument that we have global warming based on observations from the last 150 years.But therein lies the problem.Some would blame it on man and some would say it's nature.How you can say this is all man made with such a small sample when the earth has had freeze thaw cycles for eons is beyond me.I do think we have some impact but how can it really be measured?LG makes some good observations.Looks like another topic that will stir up the pot again!