New paper finds CO2 spiked to levels higher than the present during termination of last ice age — Paper published in Quaternary Science Reviews
Study 'reconstructs CO2 levels during the termination of the last ice age and finds CO2 spiked to levels near or even exceeding those of the present, obviously without any human influence. According to the authors, 'The record clearly demonstrates that [CO2 levels were] significantly higher than usually reported for the Last [Glacial] Termination,' with levels of up to ~425 ppm about 12,750 years ago, which exceeds the present CO2 concentration of 395 ppm'
