Political Ecology

The most consequential encounter was between ecology and the socialist tradition, and it was not an easy one. Classical Marxism had inherited from the nineteenth century a deep faith in productive forces — the conviction that history moved forward as humanity's capacity to produce grew. Nature, in much of that thinking, was a stock of materials awaiting transformation by labor. An ideology built on abundance and mastery did not obviously have room for the idea that there might be hard physical limits to how much a society could take.

Yet from the 1960s a strand of thinkers set out to reconcile the two. The French philosopher André Gorz, writing through the 1970s and after, argued that ecology posed a direct challenge to capitalism because a system that must grow to survive cannot accept a planet that cannot grow with it. In North America, Murray Bookchin developed what he called social ecology, insisting that the drive to dominate nature grew straight out of humans dominating one another — end hierarchy among people, and the war on the natural world loses its root. The problem was never nature; it was a way of organizing society.

In 1972 a group of researchers published a report commissioned by the Club of Rome, an international think tank, under the title The Limits to Growth. Using early computer models, it argued that a world of exponential economic and population growth on a finite planet would, sometime in the following century, hit walls it could not push through — resource depletion, pollution, collapse. It sold in the millions and was attacked from almost every direction, by economists who trusted markets to substitute and adapt, and by developing nations who heard the rich world telling them to stop before their turn.

The report was crude by later standards and its exact timelines have not held. But it did something the movement could not undo: it put a number on an intuition. Growth, the thing every political tradition of the era assumed was simply good, might be the problem rather than the frame in which problems get solved. Around the same time the economist Nicholas Georgescu-Roegen was arguing that the laws of thermodynamics set an absolute ceiling — that an economy runs on energy and materials it degrades in the using, and no amount of cleverness repeals physics.

Step back from the currents and the thinkers, and political ecology keeps returning to one question that its scientific parent never had to face. Ecology as a science studies limits without judging them — a population overshoots its food supply and crashes, and that is simply what happened. Political ecology takes the same fact and asks something a laboratory cannot: what does a society owe to a limit it can see coming? That is a moral and political question wearing a scientific coat, and it has proven far harder to answer than any measurement.

The reason the growth question sits underneath everything is that growth was the promise that let modern politics avoid its deepest conflicts. As long as the economy expanded, the poor could gain without the rich losing; the future could be richer without anyone giving up the present. Growth was the machine that turned zero-sum fights into positive-sum ones. Political ecology's most radical suggestion is that this machine may be reaching its limit — and if it is, then the conflicts it papered over come back, sharpened, with distribution at their center.

Tansley's ecosystem was meant to keep politics out of biology. What it did, over ninety years, was hand politics a new vocabulary. The currents that flowed from it — the social ecologists, the eco-socialists, the deep spiritualists, the degrowth economists, the green-growth planners — never fused into one movement because they were never really arguing about the same thing. Under the shared language of crisis, they were disagreeing about power, about hierarchy, about what a person needs to live well, and above all about whether an economy can stop growing without falling apart.