As the evidence mounts that we are fast approaching the final point-of-no-return beyond which it will be impossible to take sufficient effective action to prevent climate catastrophe – see ‘The World Passes 400 PPM Threshold. Permanently’ http://www.climatecentral.org/news/world-passes-400-ppm-threshold-permanently-20738 – the evidence of ineffective official responses climbs too. See, for example, ‘Climate Con: why a new global deal on aviation emissions is …