If you guys want to argue about global warming on math-fun, and there is nothing I like better than arguing about global warming, you should get up to date on the latest flap. Google "hockey stick"+warming to get lots of links. A climate journal published by Elsevier (1101 scientific journals) had an article on the medieval warming period refuting a previous article that claimed it hadn't occurred. The article was by Willie Soon and Sallie Baliunas of the Harvard-Smithsonian Astrophysical Observatory. This article caused a big flap among scientist political enthusiasts for global warming, and Elsevier fired the editor causing six other editors to resign. The afore-mentioned enthusiasts have long hated my friend Sallie who is head of the science advisory committee of the Marshall Institute in Washington which is pro-defense and pro-development and pro-nuclear. I think that who hates whom is signficant in understanding this flap.