Jorge Olcina
Professor of Regional Geographical Analysis at the University of Alicante
The article is the result of groundbreaking research. It is of high quality. It addresses a fundamental issue: the attribution of responsibility for the causes of current climate change and biodiversity loss across the planet. And, as its main finding indicates, the wealthiest 10% of consumers in the countries with the highest greenhouse gas emissions are responsible for nearly half of the damage caused by climate change.
The article confirms the emergence of an increasingly unequal world, in which the wealthy are primarily responsible for the impact of current climate change and the loss of biodiversity occurring across the planet. Conversely, the effects of climate change are more evident and severe in less developed societies, which cannot cope with this damage on their own. This is yet another example of what is known as the “secession of the rich” in today’s world: a wealthy population that is growing ever richer and faces no limits on its consumption, contrasted with an ever-increasing percentage of the poor population that suffers the consequences of the actions of the former.
That top 10% of the population would include the major fortunes and the companies they represent in Spain. Although globally, this is a very small share compared to countries like the U.S., China, or India.
[Regarding possible limitations] The study highlights the need for the wealthiest to contribute more and provide more funding for climate change mitigation efforts. It also proposes the “polluter pays” principle. However, this principle has proven ineffective in reducing environmental impact in the countries where it has been applied, because those with money end up paying so they can continue polluting. There are tax formulas that may prove more effective, such as taxes based on revenue (for companies) or net worth (for individuals).
Tax revenue must always serve a specific purpose. That is, the money must be used for climate change mitigation measures, and a transparent annual report on this process must be published. Furthermore, the money collected from the wealthiest segment of the population should not be directed solely toward mitigation but, above all, toward helping regions and societies adapt to the impacts of climate change—an issue that cannot be resolved in the short or medium term.