In 1996 Thomas Schelling wrote, “‘Geoengineering’ is a new term, still seeking a definition. It seems to imply something global, intentional, and unnatural.” More than a decade later, the word remains largely undefined and unpracticed. It is not in the Oxford English Dictionary, but it did find its way into the Urban Dictionary , where it is loosely defined as “the intentional large-scale manipulation of the global environment; planetary tinkering; a subset of terraforming or planetary engineering... the last gasp of a dying civilization.” Lovelock subscribes to this definition, at least the first part, and further claims that “we became geoengineers soon after our species started using fire for cooking,” or perhaps, as geoscientist William Ruddiman has proposed, millennia ago through the practices of extensive deforestation and agriculture.
In the OED, an “engineer” is one who contrives, designs, or invents, “a layer of snares”; a constructor of military engines; one whose profession is the designing and constructing of works of public utility. So engineering, by definition, has both military and civilian aspects, elements potentially both nefarious and altruistic (figure 8.1). By analogy, the neologism “geoengineer” refers to one who contrives, designs, or invents at the largest planetary scale possible for either military or civilian purposes—a layer of snares at the global level. Today geoengineering, as an unpracticed art, is still largely “geo-scientific speculation.”
“Ecohacking,” another term for geoengineering, made the short list for the Oxford Word of the Year 2008. It is loosely defined as “the use of science in very large-scale [planetary scale] projects to change the environment for the better/stop global warming (e.g., by using mirrors in space to deflect sunlight away from Earth).” A recent report issued by the Royal Society of London defines geoengineering as “the deliberate large-scale manipulation of the planetary environment to counteract anthropogenic climate change.” But there are significant problems with such definitions. First of all, an engineering practice defined by its scale (geo) need not be constrained by its stated purpose (environmental improvement), by one of its currently proposed techniques (space mirrors), or by one of perhaps many stated goals (to counteract anthropogenic climate change). Nuclear engineers, for example, are capable of building both power plants and bombs; mechanical engineers can design components for both ambulances and tanks; my father, a precision machinist during World War II, milled both aluminum ice cream scoops and one-of-a-kind components for top-secret military projects. So to constrain the essence of something that does not exist by its stated purpose, techniques, or goals is misleading at best.
“Ecohacking” sounds both too small and too electronic to cover the field of geoengineering. We are all ecohackers, as was the first person to cut down a tree with an axe. In traditional English, hackers are literally those who chop up the Earth, or figuratively those who mangle words or sense. In the computer age, “hacker” is slang for an enthusiast who considers programming an end in itself or, more subversively, who seeks to gain unauthorized access to computer files or networks. Hackers typically have “big projects” about which they obsess. One project of the computer climate engineers is to cut off the sunbeams in a simple climate model to “prove” that the Earth will cool and sea ice will grow. Much more sophisticated modelers have shown that the unknown consequences of doing this may be very, very serious. When people propose to cool the Earth by 2°C (3.6°F) using a technical fix, they are overlooking the fact that Earth has not yet warmed 2°C in the past century. So we are really dealing with dangerous speculation about speculation. A more apt term might be “geohacking,” which is hopefully harmless enough if the practice is restricted to tinkering with computer models and never “sees the light of day” in the form of potentially dangerous outdoor demonstration projects or planetary-scale tinkering.
Placing his faith firmly in progress, engineer and policy analyst David Keith is of the opinion that scientific understanding grants us increased Archimedean leverage and an “ever greater capability to deliberately engineer environmental processes on a planetary scale.” Echoing William Suddards Franklin and his grasshopper of long ago or Ross Hoffman and his misunderstanding of the butterfly effect, Keith maintains that “accurate knowledge of the atmospheric state and its stability could permit leverage of small, targeted perturbations to effect proportionately larger alterations of the atmospheric dynamics.” But no matter how great the scientific wizardry, the modern Archimedes still has no place to stand, no acceptable lever or fulcrum, and no way to predict where the Earth will roll if tipped. Failing ultimate control, geoengineering may indeed have the potential to enrage the chaotic “climate beast” of the influential geochemist and oceanographer Wallace Broecker.
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Geoengineering is a subset of “terraforming ,” or the engineering of planetary environments. Martyn J. Fogg reviewed the history and some of the technical aspects of “orchestrated planetary change” in his book on this subject, published, curiously, by the Society of Automotive Engineers, a group that one might expect would be most familiar with automobile air-conditioning. He defined “planetary engineering” as “the application of technology for the purpose of influencing the global properties of a planet” and “terraforming” as the process of “enhancing the capacity of an extraterrestrial planetary environment to support life. The ultimate in terraforming would be to create an uncontained planetary biosphere emulating all the functions of the biosphere of the Earth—one that would be fully habitable for human beings.”
Fogg described how ecological-engineering techniques might be used someday to implant life on other planets and how geoengineering might be used to ameliorate (or perhaps exacerbate) the currently “corrosive process” of global change on the Earth. He presented order-of-magnitude calculations and the results of some simple computer modeling to assess the plausibility of various planetary-engineering scenarios. He deemed it “rash to proclaim” impossible any scheme that does not “obviously violate the laws of physics.” Yet Fogg focused only on possibilities, not on unintended consequences, and left unaddressed questions of whether the schemes are desirable, or even ethical. According to Fogg, geoengineering is not simply, or even primarily, a technical problem because people, their politics, and their infrastructures get in the way. That is, it involves the implications and dangers of attempting to tamper with an immensely complex biosphere on an inhabited planet.
The epigraph of Fogg’s book cites Hungarian-born engineer and physicist Theodore von Kármán to the effect that “scientists study the world as it is; engineers create the world that has never been.” This quote has an ominous ring, however, when it comes to terraforming, since some “worlds” perhaps should never be. Fogg traced inspiration for the field to Olaf Stapleton’s Last and First Men (1930), Robert Heinlein’s Farmer in the Sky (1950), and James Lovelock and Michael Allaby’s The Greening of Mars (1984). In his “concise history of terraforming,” Fogg mentioned the work of naturalists John Ray (English, seventeenth century) and Georges-Louis Leclerc, Comte de Buffon (French, eighteenth century), who looked on the Earth as unfinished, with man taking the role of a junior partner in creation, taming the wilderness as part of a historical progression toward “perfection.”19 From there, Fogg dropped the names of George Perkins Marsh (1801–1882), an American diplomat and naturalist who wrote about replanting forests, channeling rivers, and reclaiming deserts in Man and Nature (1864); Vladimir Vernadsky (1863–1945), the Russian mineralogist and geochemist who popularized the notion of the interconnectedness of the “biosphere”; and Pierre Teilhard de Chardin (1881–1955), the French cleric and philosopher who placed the “noosphere,” the realm of human thought, in evolutionary succession to the geosphere and the biosphere.
Such expansive antecedents belie recent attempts to restrict the definition of geoengineering to the purposeful and large-scale alteration of the shortwave side of the Earth’s energy budget with the intent of affecting climate. In the literature of planetary terraformation, geoengineering is much, much more than that. It comprises macro-scale projects to control not only the supposed relatively simple and straightforward interaction of albedo and temperature but also much more complex and potentially unknowable interactions of Earth system science—involving the lithosphere, the hydrosphere, the atmosphere, the biosphere, and, perhaps most important, society. After all, engineering deals with the technical side of human affairs, and the prefix “geo” potentially involves all aspects of the planet, perhaps also its most prominent companions, the Sun and the Moon. Fogg ventured into hyper-speculative territory when he discussed “astroengineering,” or modifying the properties of the Sun, by intervening in its opacity, nuclear reactions, mass loss, chemical mixing, and even “accretion into a central black hole.” Tellingly, Fogg admitted that “technical difficulties associated with astroengineering will be immense”.
~~Fixing The Sky: The Checkered History of Weather and Climate Control -by- James Rodger Fleming
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