People are fleeing the cold: there is a strong correlation between the average temperature in January and population growth, notes Edward Glaeser, a professor of economics at Harvard University.

ECONOMIST: The census

There is no evident empirical correlation between CO2 levels and temperature, In all cases CO2 changes follow temperature changes not vice versa.

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Only during the last quarter of the century was there an appreciable correlation between greenhouse gas trends and global temperature trends.

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Yes, there is a general correlation between atmospheric CO2 levels and temperatures, but one where temperature changes lead, not follow CO2 fluctuations.

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Proxy temperature reconstructions require careful scrutiny because the proxies are not direct temperature measurements, but represent other data and factors that may or may not have a close correlation with past temperatures.

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