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To Save Ourselves, We’ll Need This Very Different Economy

To Save Ourselves, We’ll Need This Very Different Economy

What would ‘getting serious’ about the survival of civilization look like?

The pandemic is a big problem. Climate change is an even bigger problem. But the meta-problem is ecological overshoot.

Plagues and heat waves — along with plunging biodiversity; fishery collapses; soil and land degradation; land, water and sea pollution; resource shortages, etc. — are mere symptoms of a much greater planetary malaise. Ecological overshoot means there are way too many people using vastly too much energy and material resources and dumping too much waste.

In more technical terms, humanity’s consumption of even renewable resources and our production of wastes exceeds the regenerative and assimilative capacities of the ecosphere. This is the biophysical definition of “unsustainable,” and a harbinger of pending systems collapse.

Avoiding the collapse of one’s civilization would seem to be job one for political leaders. And yesterday they received yet another “code red” reminder of what is at stake from the Intergovernmental Panel on Climate Change.

Yet few politicians have even heard of overshoot. Concern about its implications has yet to penetrate economic and developmental policy circles.

It therefore seems fair to ask: What accounts for such political deafness? One obvious earplug is the neoliberal economics dominant in the world today. Its adherents assume that:

    • The economy is separate from, and can function independently of, the biophysical “environment.”
    • Important relationships between variables change predictably and if they deviate from desirable comfort zones, can be reversed.
    • The “factors of production” (finance capital, natural capital, manufactured capital, human capital) are near-perfect substitutes. For example, human ingenuity — technology — can make up for any potentially limiting natural resource.

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Sustainability Metrics, Growth Limits, and Philanthropy

Sustainability Metrics, Growth Limits, and Philanthropy

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As the metrics of sustainability become ever more robust and sophisticated, it is ever more apparent to many of us who study those metrics that industrial civilization, as currently configured, is unsustainable.

Ecological footprint analysis tells us that we are presently using 1.5 Earths’ worth of resources annually. We are able to do this only by drawing down renewable resources at a rate that exceeds their ability to regenerate; in other words, by stealing from the future.

Planetary Boundaries analysts have identified nine crucial parameters that define a safe operating space for humanity within the global ecosystem. We are currently operating outside that safety zone with regard to four of the boundaries. Exceeding just one boundary far enough, long enough, imperils both human society and the ecosystem on which it necessarily depends.

The most widely discussed of those boundaries is the planetary carbon budget. As we all know only too well, the CO2 content of the atmosphere now exceeds 400 parts per million—up from the pre-industrial level of 280ppm—and we appear to be well on our way to 450, 550, or even 650ppm, while climate scientists have determined that 350 ppm is the safe limit.

Those numbers, plus extinction rates, rates of ocean acidification, rates of topsoil erosion, and rates of deforestation, are the metrics of sustainability that tend to be most frequently discussed by environmentalists, and the alarming numbers being reported for these indices are certainly sufficient to support my opening assertion that current industrial society is unsustainable. However there are two other important metrics that have fallen out of fashion, largely because many people assume they measure society’s health rather than its vulnerability. One is human population growth. We all love humanity, but how much of it can the Earth support? World population stands at about 7.3 billion, and is on course to reach between 9 and 11 billion later this century. Yet a growing human population makes all those previously mentioned ecological perils—including climate change, deforestation, loss of biodiversity, and soil degradation—harder to address.

 

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Olduvai IV: Courage
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Olduvai II: Exodus
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