I dunno man I just went and double checked the first IPCC report from 1990 and their estimates are pretty good... http://www.ipcc.ch/publications_and_data/publ

I dunno man I just went and double checked the first IPCC report from 1990 and their estimates are pretty good... http://www.ipcc.ch/publications_and_data/publications_ipcc_first_assessment_1990_wg1.shtml http://www.ipcc.ch/publications_and_data/publications_ipcc_f...