THE SYMBIOCENE
Designing a Planetary Civilisation
John Harrison
Written from the perspective of a future historian looking back on the middle decades of the twenty-first century.
Introduction
The Great Realignment changed how humanity thought about itself.
The Symbiocene changed how humanity lived.
From the perspective of the twenty-second century, this distinction is important.
The Great Realignment was primarily an intellectual and cultural transformation. Humanity discovered that it was not separate from nature but an inseparable part of it and learned how to fix what it was doing that was destructive
Yet understanding alone could not restore rivers, regenerate soils, rebuild ecosystems, or stabilise climate systems.
Understanding had to be translated into action.
The challenge facing humanity was therefore unprecedented.
Could an industrial civilisation redesign itself to operate as a beneficial component of the living systems upon which it depended?
History records that it did.
The period during which this transformation occurred became known as the Symbiocene.
Seeing the Whole
One of the most important consequences of the Great Realignment was the rediscovery of systems thinking.
For generations, human institutions had tended to study problems in isolation.
Scientists specialised in botany or zoology
Economists examined economies.
Engineers designed infrastructure.
Environmental scientists studied ecosystems.
Politicians managed jurisdictions.
Businesses pursued commercial objectives.
Each discipline developed valuable knowledge.
Yet reality ignored disciplinary boundaries.
The atmosphere did not recognise national borders.
Water cycles did not consult governments.
Economic systems depended upon environmental systems.
Environmental systems were increasingly influenced by economic systems.
Everything was connected.
Humanity gradually came to understand that the future depended not upon improving individual components, but upon improving the relationships between them.
The challenge was not merely to optimise the parts.
It was to harmonise the whole.
The Eco-Sphere and the Anthroposphere
Many historians traced the intellectual foundations of the Symbiocene to the work of Charles Darwin, James Lovelock and Lynn Margulis.
Darwin demonstrated that life evolves through adaptation and natural selection. Lovelock and Margulis later advanced the Gaia Hypothesis, encouraging humanity to view Earth as an interconnected, self-regulating system in which life and environment co-evolved.
Together, these insights led humanity towards a profound realisation.
The ultimate test of civilisation was not wealth, power or technological sophistication, but fitness. A civilisation that degraded the systems that sustained it could not endure.
The Eco-Sphere came to be recognised as the integrated living system of Earth. The Anthroposphere comprised humanity's cities, infrastructure, institutions, economies and technologies.
Previous generations often behaved as though these were separate realms.
In reality, the Anthroposphere existed entirely within the Eco-Sphere.
Every building, machine, organisation and economy ultimately depended upon the Earth's living systems for energy, materials and ecological services.
The objective of civilisation therefore changed. It was no longer to maximise activity regardless of consequences. It became to ensure that human systems enhanced the health, resilience and productivity of the larger system upon which they depended.
For the first time in history, civilisation consciously set out to become a beneficial component of a self-regulating planetary system.
Rethinking Prosperity
One of humanity's most significant achievements during this era was redefining prosperity.
For centuries, societies often measured progress through quantities of production and consumption.
Those measures revealed some aspects of success but overlooked many others.
They did not adequately account for ecosystem degradation.
They did not recognise the depletion of natural capital.
Nor did they distinguish between activities that increased long-term well being and those that diminished it.
As understanding improved, a more sophisticated perspective emerged.
Prosperity came to be measured not simply by the flow of money but by the condition of the systems that generated well being.
Healthy communities, healthy eco-systems, healthy economies and healthy institutions.
Success was increasingly defined as the ability to enhance all four simultaneously.
The false choice between economic and environmental outcomes slowly dissolved.
People began recognising that long-term economic prosperity depended entirely upon maintaining the ecological foundations that made it possible.
Designing for Circularity
Perhaps the most visible changes occurred in material flows.
The industrial systems of the early twenty-first century often operated according to linear patterns.
Resources were extracted.
Products were manufactured.
Waste was discarded.
Nature was expected to absorb the consequences.
The Symbiocene challenged this assumption.
Natural systems produced no waste.
The output of one process became the input for another.
We recycled or made composites from wastes
Humanity gradually adopted the same principle.
Materials were designed for reuse.
Industrial by-products became resources.
Wastes became resources
Buildings became material banks rather than future landfill.
Nutrients were recovered and recycled.
Carbon increasingly came to be viewed not as a pollutant but as a valuable resource requiring careful management within biological and industrial cycles.
The objective was not simply efficiency.
It was participation in regenerative cycles.
Learning from Nature
A remarkable shift occurred in engineering.
Earlier generations often imagined progress as conquering natural constraints.
During the Symbiocene, engineers increasingly sought to understand how nature solved problems.
Forests maintained fertility indefinitely.
Wetlands purified water.
Coral reefs created complex structures from available resources.
Living systems operated efficiently, adaptively and resiliently.
Rather than attempting to dominate these processes, humanity increasingly learned from them.
Biomimicry became commonplace.
Infrastructure was designed to work with natural systems rather than against them.
Cities evolved into ecological partners rather than ecological burdens.
The guiding question changed from:
How can we control nature?
to:
How can we collaborate with it?
Recycle everything so there was no waste?
Produce what we need with low or no impact?
Carbon Finds Its Place
Among the most important developments was a new understanding of carbon.
For much of the industrial era, carbon was discussed primarily as a problem.
Yet carbon is also the fundamental building block of life.
The question was never whether carbon was good or bad.
The question was where it belonged.
Humanity learned to manage carbon flows more intelligently.
Carbon was captured within soils, vegetation, durable products and building materials.
Agricultural systems evolved from net emitters to net sinks.
Urban infrastructure increasingly functioned as a carbon reservoir.
Industrial processes were redesigned so that carbon served productive and regenerative purposes rather than accumulating in inappropriate places.
In hindsight, the solution was remarkably elegant.
Civilisation learned to work with natural cycles instead of disrupting them.
Regenerating the Biosphere
As human systems improved, pressures on natural systems began to decline.
We learned to live down the trophic ladder
We learned how to make nutritious foods from carbon, nitrogen and hydrogen.
And make fresh water from salty water without creating saltier water.
Land previously degraded by unsustainable practices was restored.
Deserts were restored to life
Forests expanded.
Wetlands recovered.
Rivers regained ecological function.
Biodiversity losses slowed and eventually reversed.
Marine ecosystems began recovering from centuries of pressure.
The changes did not occur uniformly, nor were they free from setbacks.
Nevertheless, the broader trend became unmistakable.
Humanity's relationship with the rest of life was changing.
For the first time since the Industrial Revolution, civilisation's net contribution to the biosphere became increasingly positive.
The distinction between development and restoration gradually disappeared.
Development itself became restorative.
The Stewardship Civilisation
The defining characteristic of the Symbiocene was not any particular technology.
It was stewardship.
Previous eras often judged success by the ability to extract value.
The Symbiocene judged success by the ability to create value while enhancing the systems that made value possible.
This principle influenced everything.
Governments.
Markets.
Engineering.
Education.
Agriculture.
Manufacturing.
Urban design.
Humanity increasingly accepted responsibility for maintaining and improving the planetary systems that sustained it.
Not because it had become less ambitious.
But because it had become wiser.
Conclusion
Historians now recognise that the Symbiocene was the practical expression of the Great Realignment.
Humanity did not save the planet.
The planet had always possessed extraordinary powers of renewal.
Instead, humanity learned how to participate constructively within those processes.
The industrial civilisation that once operated in tension with the biosphere gradually evolved into a stewardship civilisation that operated in partnership with it.
The result was not the abandonment of technology, prosperity or progress.
It was their maturation.
Humanity finally understood that flourishing ecosystems, flourishing economies and flourishing societies were not competing objectives.
They were different expressions of the same reality.
The Symbiocene did not represent the end of human development.
It represented the beginning of civilisation's adulthood.
And having finally learned how to care for the living world that created it, humanity became capable of contemplating a new responsibility.
Not merely sustaining life on Earth.
But carrying it beyond.
That story belongs to the next chapter.
References
Darwin, C. (1859) On the Origin of Species by Means of Natural Selection. London: John Murray.
Lovelock, J.E. (1979) Gaia: A New Look at Life on Earth. Oxford: Oxford University Press.
Margulis, L. and Sagan, D. (1995) What is Life? New York: Simon & Schuster.
Lovelock, J.E. and Margulis, L. (1974) Atmospheric homeostasis by and for the biosphere: the Gaia hypothesis, Tellus, 26(1-2), pp. 2-10.