Thanks to Paul Turner for tweeting about a new David Lambert article, which has been published today in 'Public History Weekly'.
It is drawn from the work that David and others have been doing on the GeoCapabilities project.
We might query the measurement instruments and methodology, but we would know that to do so would be like whistling in the wind. For we know that humans have the ability to extinguish biodiversity (including most human life) on Earth. And we know that this is beginning to look inevitable.