CO₂e

By 2014, it was common knowledge that if our society was to have a 50% chance of staying below the two-degree Celsius threshold, atmospheric concentration of the heat-trapping substances (GHGs) must stabilize at 450 ppm (parts per million) of CO₂e  (the CO₂-equivalent, not just CO₂). This week, it was reported, the CO₂-equivalent of greenhouse gases (GHGs) is now well over 470 ppm of CO₂e. This means humanity’s-explorers-of-the-truly-immoral knew over two years ago that the advertised two-degree Celsius limit was unattainable, is unattainable anytime in the near future, and has been unachievable for longer than that.  Read more...