Why were the temperatures in the middle ages much warmer when CO2 was much lower? Why did we have the little ICE AGE. Why are there Glacial Epochs in the past during periods of CO2 levels that were many times higher than they are today? Why do the global warming models ignore the fact that the sun's output is not constant and varies in a cycle? Why do the global warming models ignore the changes in the earths orbit and inclination to the sun?
Any model must incorporate all the variable to have any validity. The global warming models use cherry picked information that will give them the result they want. It is junk science.
How should I know when the world's best scientists don't have definitive answers? But they do have answers. Surely you don't believe that they haven't addressed these questions, that you're the first to notice these things?
If you want to know what they say just google their work. Wikipedia provides a good starting point. I linked to it on a previous thread. If you'd like I'll provide the link on this one too.