We are used to hearing that if everyone lived in the same way as North Americans or Australians, we would need four or five planet Earths to sustain us.
This sort of analysis is known as the “ecological footprint” and shows that even the so-called “green” western European nations, with their more progressive approaches to renewable energy, energy efficiency and public transport, would require more than three planets.
How can we live within the means of our planet? When we delve seriously into this question it becomes clear that almost all environmental literature grossly underestimates what is needed for our civilisation to become sustainable.
Only the brave should read on.
The ‘ecological footprint’ analysis
In order to explore the question of what “one planet living” would look like, let us turn to what is arguably the world’s most prominent metric for environmental accounting – the ecological footprint analysis. This was developed by Mathis Wackernagel and William Rees, then at the University of British Columbia, and is now institutionalised by the scientific body, The Global Footprint Network, of which Wackernagel is president.
This method of environmental accounting attempts to measure the amount of productive land and water a given population has available to it, and then evaluates the demands that population makes upon those ecosystems. A sustainable society is one that operates within the carrying capacity of its dependent ecosystems.
While this form of accounting is not without its critics – it is certainly not an exact science – the worrying thing is that many of its critics actually claim that it underestimates humanity’s environmental impact. Even Wackernagel, the concept’s co-originator, is convinced the numbers are underestimates.
According to the most recent data from the Global Footprint Network, humanity as a whole is currently in ecological overshoot, demanding one and a half planet’s worth of Earth’s biocapacity. As the global population continues its trend toward 11 billion people, and while the growth fetishcontinues to shape the global economy, the extent of overshoot is only going to increase.
…click on the above link to read the rest of the article…