tag:blogger.com,1999:blog-579549341020421678.post7038554171177102562..comments2024-01-16T13:06:15.270-06:00Comments on Climate Change: The Next Generation: John Cook, Skeptical Science: CO2 levels during the late OrdovicianTenney Naumerhttp://www.blogger.com/profile/11843130378338023902noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-579549341020421678.post-91402177362626624262010-03-13T11:29:10.735-06:002010-03-13T11:29:10.735-06:003000 ppm! yowza,3000 ppm! yowza,susanhttps://www.blogger.com/profile/16829151452002682271noreply@blogger.com