The CO2 hockey stick is similar in shape to the temperature hockey stick. Both sticks show accelerating increases. Both sticks are being used by the same team (runaway greenhouse global warming).
A climate subject to influences by factors other than GHGs is only possible when GHG concentrations are much lower than they are now. GHGs are in control of climate now and will dominate climate for 100s of millions of years.
'Dramatic global warming has occurred since the 19th century. The recent record warm temperatures in the 1990's are indeed the warmest temperatures the Earth has seen in at least the last 1000 years.'
'The idea of a global or hemispheric "Medieval Warm Period" that was warmer than today has turned out to be incorrect.'
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