[westmichman]

So then, I guess the question is: What is caising the current increaes in CO2 (if they actually exist), current warming, warming from 700 years ago, natural cycles, or burning of fossil fuels?

[CedarDave]

Combination of the latter two, I suspect.

[cogitator]

What is caising the current increaes in CO2 (if they actually exist), current warming, warming from 700 years ago, natural cycles, or burning of fossil fuels?

Are you familiar with the multiple lines of evidence that the increase in atmospheric CO2 is anthropogenic?