Deforestation and world population sustainability: a quantitative analysis

Deforestation and world population sustainability: a quantitative analysis

SOURCE: Nature DATE: May 6, 2020 SNIP: Based on the current resource consumption rates and best estimate of technological rate growth our study shows that we have very low probability, less than 10% in most optimistic estimate, to survive without facing a catastrophic collapse. In the last few decades, the debate on climate change has assumed global importance with consequences on national and global policies. Many factors due to human activity are considered as possible responsible of the observed changes: among these water and air contamination (mostly greenhouse effect) and deforestation are the mostly cited. While the extent of human contribution to the greenhouse effect and temperature changes is still a matter of discussion, the deforestation is an undeniable fact. Indeed before the development of human civilisations, our planet was covered by 60 million square kilometres of forest1. As a result of deforestation, less than 40 million square kilometres currently remain. In this paper, we focus on the consequence of indiscriminate deforestation. …. Modern societies are in fact driven by Economy, and, without giving here a well detailed definition of “economical society”, we may agree that such a kind of society privileges the interest of its components with less or no concern for the whole ecosystem that hosts them. Clear examples of the consequences of this type of societies are the international agreements about Climate Change. The Paris climate agreement is in fact, just the last example of a weak agreement due to its strong subordination to the economic interests of the single individual countries. In contraposition to this type of society we may have to redefine a different...