Take a look at the temperature graph on this page -- displaying temperatures for the past 400,000 years. Note that in previous times when the earth came out of an ice age -- approximately 120,000 years, 230,000 years, and 320,000 years ago -- the temperature spiked and then declined rapidly. Now notice the warming that occurred from approximately 15,000 - 10,000 years ago. The temperature did not spike up and then start to decline. It has risen about 10 degrees to the present level, and stayed fairly stable for many thousands of years. The temperature has reached and maintained some sort of plateau.
Can you imagine what life in North America and Europe might be like if the current natural warming trend had followed past patterns? It would be getting very cold indeed.
Science does not have a clear understanding of the reasons for this temperature plateau -- the oasis of warmth we've been enjoying in a history of much colder temperatures. Thank God for global (natural) warming!
Another feature of interest is to compare the CO2 levels to the temperature levels. Temperature increases clearly precede CO2 increases. CO2 did not initiate global warming in the past. Causes do not follow effects. This is illogical. At least in the past, CO2 did not cause rapid global warming.
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