RE:RE:Pretty telling I'm all for efficiency and improving environmental measures etc... but with the whole narrative around CO2 being a big bad gas that causes all things bad on our planet I think the discussion has just been hijacked by alarmists that when questioned go around shouting 'climate denier, denier', 'right wing extremist', 'fossil loving wacko'. Just pointing out that shutting down debate is the opposite of what science is supposed to be and do. Science is asking the questions and sharpening our models. At this point they simply do not know, and it should be okay to admit that.
Before humans earths CO2 trajectory was going sub 200ppm.. trees stop photosynthesis at 120ppm. Arguably humans saved the planet from a mass extinction event