Comment: Yeah, good point.

I do not know exactly how they calculated the temperature but they used the air bubbles.

Since 1850 the co2 concentration has exponentially increased from 320 to 380.
http://www.ems.psu.edu/~radovic/CO2_increase.gif

And burning hydrocarbons results in increased co2 concentrations. But if some or most charts depict co2 lagging temperature than I am not sure what to think of it. Also, every article I read has an agenda. They either are trying to prove global warming or deny it. So the information is hard to trust.

Here is a nice chart showing the relationship during the industrial period. There is no way to tell what is lagging on it.

http://www.skepticalscience.com/images/co2_temp_1900_2008.gif

So I am still left in purgatory not knowing if global warming is a scare tactic used to scare the population into being taxed and controlled more.