We are on track to quadruple CO2 concentration by the end of the century at current rate of emission.<quoted text>I'm not sure we can double or quadruple CO2 levels in the atmosphere
That would be an observation, halfwit.We've never seen an experimental test that shows a measured CO2 emission changing the global average CO2 level.
Emitting half a trillion tons of CO2 = a 40% increase in CO2 level.
Deny that, fothermucker.
I agree: the sceptics seem to be using failed models.It seems insane to trust in models that have failed again and again,