Reality check
Were I to observe that a new-born baby weighs the same as a small bag of potatos, that does not mean that I think that a baby IS a small bag of potatos, does it ? So why on earth should comparing the CO2 emissions of a baby with those of a patio heater imply that a baby is the same thing as a patio heater ?
It seems to me that what OPT are saying that if there were fewer people on the planet, there would be less stress on the ecosystem and that finite resources would last longer.
It makes sense to me, it's about time the political parties took this on board rather than repeating the illogical mantra that economic growth (which means even more rapid resource depletion and environmental degradation) is the answer to everything.