Our modern industrial economy traces a straight line from resource extraction to manufacturing to sales to waste disposal. Since Earth has finite resources and limited ability to absorb pollution, the straight-line economy is unsustainable; it is designed for eventual failure.

Why not make the economy circular, with waste from one process feeding into other production processes, thus dramatically reducing the need both for resource extraction and for the dumping of rubbish? We should mimic nature: it’s a central ideal of the ecology movement, with roots in indigenous wisdom worldwide.

Our core ecological problem is not climate change. It is overshoot, of which global warming is a symptom. Overshoot is a systemic issue. Over the past century-and-a-half, enormous amounts of cheap energy from fossil fuels enabled the rapid growth of resource extraction, manufacturing, and consumption; and these in turn led to population increase, pollution, and loss of natural habitat and hence biodiversity. The human system expanded dramatically, overshooting Earth’s long-term carrying capacity for humans while upsetting the ecological systems we depend on for our survival. Until we understand and address this systemic imbalance, symptomatic treatment (doing what we can to reverse pollution dilemmas like climate change, trying to save threatened species, and hoping to feed a burgeoning population with genetically modified crops) will constitute an endlessly frustrating round of stopgap measures that are ultimately destined to fail.