wikimedia.org/wiki/File:Cretaceous_67ma_co2_500ppmvol_tannual_1.png English Mean temperature of January, 67 million years ago, if CO2 500 ppm vol author name...
CO2 500 ppm vol" outname1="cretaceous_67ma_co2_4x_tjuly_1.png" outname1="cretaceous_67ma_co2_500ppmvol_tjanuary_1.png" outname1="cretaceous_67ma_co2_500ppmvol_tannual_1...