Ecological Debt Day (EDD), also known as Earth Overshoot Day, is the calculated illustrative calendar date on which humanity’s resource consumption for the year exceeds Earth’s capacity to regenerate those resources that year. Ecological Debt Day is calculated by dividing the world biocapacity (the amount of natural resources generated by Earth that year), by the world Ecological Footprint (humanity’s consumption of Earth’s natural resources for that year), and multiplying by 365, the number of days in one Gregorian common calendar year:
(World Biocapacity/World Ecological Footprint) x 365 = Ecological Debt Day
When viewed through an economic perspective, EDD represents the day in which humanity enters deficit spending . In ecology term EDD illustrate the level by which human population overshoots its environment.
EDD is made by Global Footprint Network.
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