Tag Archives: environment

Is humanity sustainable? (Principles for ecostructure)

The idea of sustainability has clearly taken root.  The word appears frequently in print as well as Internet media, and national governments around the world have established agencies and programs devoted to it.  There seems to be widespread agreement that the idea has something to do with energy supplies, environmental impact, and economic growth, and perhaps with inequality, social engagement and political stability, but the practical scope of the idea and meaning of the word seem to vary from one forum to another.

An important early appearance of the meme, if not its initial source, is often attributed to the World Commission on Environment and Development, commonly known as the Brundtland Commission.  This group of international experts was convened by the United Nations in 1983 to propose long-term environmental strategies for achieving sustainable development; recommend ways that concern for the environment may be translated into greater co-operation among countries; and help define shared perceptions, aspirational goals, a long-term agenda for action.  The Commission’s 1987 report, Our Common Future  suggested that “Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs.” We lack agreement among nations, regions, and generations as to what may be our needs.

In addition, the time scale for thinking about our sustainability far exceeds our abilities to plan and take meaningful action. Scientific evidence suggests that the biological genus of which humans are a part evolved into being and the first hominid use of stone tools began in Africa perhaps 2.5 to 3.5 million years ago.  Evidence of homo sapiens sapiens, our particular species, dates back about 250,000 years.  (In all of this, my phrasing is meant not to convey any skepticism, but rather to acknowledge that we rely entirely on inference from the limited data available to us to draw conclusions about past events and conditions.)

Our various experiments in culture, social, and political organization are rather brief when seen in sharp contrast with these time periods. Estimates of age of the oldest cave paintings are 35,000 to 40,000 years, and stabile human settlements perhaps 4,000 to 6,000 years. Much of the Earth is marked by the remains of human activities that have not survived to present times.  Against the backdrop of human history,  what does sustainability really mean? Probably the best we can do in light of such evidence is to limit our perspectives to decades, but even that span appears optimistic for many government programs.

Of course, our values, technologies, and culture may change for good reasons from place to place and time to time. Our numbers continue to increase, as do our technological capabilities. We learn more about pollution and pesticides and the limits of our resources.  Our values and comprehension of our own wellbeing evolve. It seems quite likely that we simply cannot do anything to meet our own present needs without in some sense compromising the options available to future generations.

A few useable principles nevertheless may increase the chances of humanity’s long-term survival and flourishing, and these principles seem essential to the concept of ecostructure:

  • Use only renewable resources: No matter how large the supply reservoir may be, it will eventually be exhausted.
  • Eliminate all waste and pollution: What economists refer to as residuals are simply an indicator of inefficiencies in a production processes.
  • Stabilize our population: Increasing humans’ wellbeing and chances of survival as individuals and as a species depends ultimately on enhancing labor productivity as well as on applying strictly the first two principles.

People, Nature, and Green Infrastructure

I shall list explicitly in a future post all of the elements of what I call “infrastructure.”  For now I want to consider one of the outliers: wilderness.

Most readers will grant, I imagine, that infrastructure includes government-provided roads, water supply, and sewers.  Some may argue that I should not include energy supply and telecommunications, because these systems are typically managed by the private sector; but I shall include them.  Monuments and parks—Philadelphia’s Liberty Bell and the Eiffel Tower in Paris, for example—also qualify easily, as I shall write, because they structure our views of the world, our understanding of where we are, and even how we think of ourselves. 

Wilderness is more difficult. 

Henry David Thoreau famously wrote in Walking, penned in 1861 but published after his death, “…in Wildness is the preservation of the world.”  I take his meaning quite literally: We must have places in the world where humanity’s touch remains light if we are to survive as a species and continue to reside in this world.  It is a perspective that photographers Ansel Adams and Eliot Porter conveyed viscerally in influential coffee-table portfolios published by the Sierra Club. (Ansel Adams and Nancy Newell, This is the American Earth, 1960; Elliot Porter, In Wildness is the Preservation of the World, 1962)  It is an argument forcefully made by Harvard naturalist Edward O. Wilson (The Future of Life, 2002) Adam’s images in particular—in the Yosemite Valley and the Tetons are among the most memorable for me—arguably spurred the rise of environmental consciousness in the United States as Sierra Club calendars graced college dorm rooms across the nation.

Set aside—for now, at least—consideration of whether “wildness” and “wilderness” are interchangeable ideas; Henry David seems to use them as such.  The evidence suggests, however, that the sort of place he had in mind could be experienced without making a trek to Yosemite.  He never traveled farther from home than Lake Ontario, and the Maine woods were probably the closest he ever came to wildness.  Granted, the woods in the mid-19th Century were less the habitat of loggers and snowmobilers than they are today, but New England had already seen 200 years of European settlement and native Americans had cleared an farmed throughout region for much longer.  As historian William Cronon convincingly explains, the landscape of nature that Thoreau would have known was far from free of human influence. (Changes in the Land: Indians, Colonists, and the Ecology of New England, 1983)  During his famous two years on the shores of Walden Pond, Thoreau was never beyond the reach of the train’s whistle.

Thoreau’s interest was primarily intellectual.  He wrote that we need the idea wildness to nurture our spirit, that “forest and wilderness” are the source of “the tonics and barks which brace mankind.” (Walking, Part 2)  The perspective separates humanity from the rest of “nature,” as though we are not a part of it.  A rich literature explores the origins and evolution of that view, but I will not go there now.

Suffice it to say that humanity and the other elements of our world are inseparable, and science is now giving us a functional understanding of the essential services we get from natural systems.  Ecology’s initial stirrings among such Thoreau contemporaries as Humboldt, Darwin, and Wallace is now branching into such sub-disciplines as landscape ecology and systems ecology—even urban ecology—and yielding the knowledge to devise management tools.

For lack of a better term, many people refer to this type of infrastructure as “green.”  (See, for example, the admirable book by Mark A. Benedict and Edward T. McMahon, Green Infrastructure: Linking Landscapes and Communities, 2006)  For me, there is no distinction to be made based on color or the underlying science used to develop and manage the essential hardware and software providing underlying structure and essential support for our economy and society.