Merlin,
The percentages come from:
Current Greenhouse Gas Concentrations (updated October, 2000)
Carbon Dioxide Information Analysis Center
(the primary global-change data and information analysis center of the U.S. Department of Energy)
Oak Ridge, Tennessee
The cost analysis from:
The Intergovernmental Panel on Climate Change (IPCC) published figures. They were boiled down here:
http://junkscience.com/MSU_Temps/Kyoto_Count_Up.htmBelieve the analysis or not, it's up to each of us, I for one have seen the doomsayers tax me for cooling, warming and now the best one, change. After 50 some years on this planet, the one thing I know for sure is that there is always change. Look at the makeup of the atmosphere over the history of the earth. Wide swings in temp, oxygen and CO2 levels, all before man got here.
P.G.