By Andrew Mackinnon
Last updated: 25th November, 2025
Carbon dioxide exists in the earth’s atmosphere at around 400 parts per million (ie. 0.04% or 4% of 1%), which is around 1 part per 2,500. Therefore it is manifestly obvious that carbon dioxide does not influence the temperature of the atmosphere to any appreciable extent. In short, carbon dioxide emissions are not causing ‘global warming’, nor has it even been proven that ‘global warming’ is occurring.