Turns out both Malthus and Paul Ehrlich were right.
From Think Progress: http://thinkprogress.org/climate/2012/12/15/1329841/report-humanity-has-overshot-the-earths-biocapacity/
By Jeff Spross
on Dec 15, 2012
A new report on China’s ecological footprint opens with some grim news for the planet as a whole: The demand humans place on the planet — in terms of land use, resource consumption, pollution, and so on — overshot the Earth’s threshold for sustaining that demand back in the early 1970s. Since then the gap has only grown wider.
The report measures that demand by “ecological footprint,” which takes into account the area people use to produce the renewable resources they consume, the area that’s taken up by infrastructure, and the area of forest needed to absorb CO2 emissions not absorbed by the ocean. The report then compared that to the Earth’s biocapacity, which measures the amount of area available to serve all those purposes.
Both factors are measured in units of global hectares (gha), which represent “the productive capacity of one hectare area of utilized land at global average biological productivity levels.” And as it turns out, humanity’s footprint now outpaces the planet’s total biocapacity to the point that it would take one and a half Earths to sustain our total level of consumption:
In 2008, the Earth’s total biocapacity was 12.0 billion gha, or 1.8 gha per person, while humanity’s Ecological Footprint was 18.2 billion gha, or 2.7 gha per person. This discrepancy means it would take 1.5 years for the Earth to fully regenerate the renewable resources that people used in one year, or in other words, we used the equivalent of 1.5 Earths to support our consumption.
Continue reading at: http://thinkprogress.org/climate/2012/12/15/1329841/report-humanity-has-overshot-the-earths-biocapacity/
