[Sherman Logan]

Just shot yourself down. We came out of the Little Ice Age around 1850, so present warming is something like 650 years early.

Look, I think it is just a fact that man is presently changing the composition of the atmosphere in minor degrees by putting massive amounts of stored carbon back into the atmosphere.

What effects, if any, this has on the climate is yet to be determined.

[kidd]

Present levels of CO2 and the present temperature are both very close to “average” for the earth’s history. In terms of the history of the past several hunderd million years, they are unremarkable.

The present (minor) increase in CO2 began several decades BEFORE the industrial revolution. It would be hard to argue that industrial activity is a cause of the CO2 increase when the increase started before industry did.

As far as how CO2 affect temperature, please see the Beer-Lambert Law. Here is a pretty good source: http://wattsupwiththat.com/2010/03/08/the-logarithmic-effect-of-carbon-dioxide/

[Timocrat]

Just shot yourself down. We came out of the Little Ice Age around 1850, so present warming is something like 650 years early.

Suggest you Google Medieval Warming period that occurred Circa 1,000-1300 A.D. or 650 Years before 1850.