25 million years ago our planet was far warmer then today. No reason why life would not be able to live in a world like that once again. From 300 million to 8 million years ago the temperature was nearly constantly above todays. In you people call todays temperature normal? It is not normal, but a cold period/ice age not unlike the one that hit 300-400 million years ago. Of course this chart shows from now to 5 million years from now in increase inervals of time. 10-60 million years is 10 million years a dash mark, and it just increases more and more. In fact the period between 350-300 million years is the only time in the 560 plus million years besides the period we're in that was cooler then today. Sure puts a arrow into global warmings ass? In kills it. Who's to say that earth is not moving out of the overall 8 million year ice age period and going back to the temps it was for 290 plus million years? I would say that is more of a avg then our little ice age period, wouldn't you say? This shows that a majority of earths history has had higher co2 levels then today. Co2 is for growing plants, tree's to feed animals and humans. http://upload.wikimedia.org/wikipedia/commons/0/06/Extinction_intensity.svg Methane levels. Just think of Methane levels of 25-30 times that of today and that was with co2 levels far far higher then today. Life developed in a warmer that was far more tropical then the one we freeze our asses of today with. Global warmers please explain to me how the fuck does 5 million years out weights 600 million years when coming to our avgs? I know it don't, and that if there was a true avg, it would be a lot warmer then today's over that period. When you consider all the cycles and the fact that we're way below the long term earth avg. You have to ask where the hell is the global warming the problem? The climate that we currently have is unnormal and cold. Brutal time in earths history.