The relationship between Temperature and CO2 for 400,000 years

As seen on It can be found in greater detail here. Temperature variation is cyclical, and C02 follows temperature. Memorise that, and repeat--and buy ski thermals while they are cheap. Most indicators suggest that we are in for long term cold shortly, not least the sun (though the proper response there is, I guess, that we could be just seeing the bottoming out of solar cycle 23).