The Real History of C02 Levels Prof. Beck's paper "180 YEARS OF ATMOSPHERIC CO2 GAS ANALYSIS BY CHEMICAL METHODS" has now been published in the journal Energy and Environment. A PDF copy of the full paper can be obtained from the author: egbeck@biokurs.de. The short version of Beck's paper can be found here: http://www.anenglishmanscastle.com/180_years_accurate_Co2_Chemical_Methods.pdf (Note: Chart could not be cut and pasted. Go to http://antigreen.blogspot.com/ to see chart) Excerpt below. It shows that actual past measurements of atmospheric CO2 have undergone great variation in levels from time to time in the period surveyed. Levels were not "flat" before the 20th...