The only one thing we know about the Earths climate is that is isn't static. Its very dynamic. I'd like to see a temp trend over 350 million years. I suspect it would show that the Earth has been a hell of alot warmer in the past as it is now. Also the Ice Age was a new phenomenon, and largely influenced by the growth of the Himalayas, so since the Ice Age has started the global temps have been lower than they had in the past.
I'm all for changing our lifestyle to reduce our impact on the planet - that's just common sense, but this whole environmental catastrophe stuff is getting a bit tiresome. Lets accept the earths climate is dynamic and put all our efforts in accommodating it. If the sea levels are rising, then lets focus on relocating the populations that are affected. If fertile farming lands are going to become dry arid deserts then lets focus on installing irrigation systems, genetically modified crops etc.
But ultimately we need to be working out how we're going to reduce the population of the world. IF it is the case that global warming is man-made, then the rise in the worlds population over the next 20yrs and the energy and food demands that will create will completely and utterly wipe out any improvements or reductions in CO2 emissions we can possibly make over that period of time. It is impossible to halt the process and we're back to the suggestions I made earlier about accommodating the effects.
One question though - CO2 is a powerful gas and you only need a small increase in CO2 in the air we breathe before the effects of asphyxiation take hold. Also CO2 is heavier than air - there are loads of mass dinosaur fossil sites near volcanic areas where CO2 pumped out has suffocated them, so if we're pumping all this CO2 into the atmosphere then why is it not sinking to ground level and suffocating us all??