Imagine youâre at home on the couch, scrolling through pictures of kittens, or Kardashians, or something. Itâs late (or maybe itâs earlyâthe time doesnât really matter). You hear âbreaking newsâ chimes on the TV and look up. Itâs one of those depressing environment stories. Youâve seen these before: in fact, you could practically script the entire thing. Thereâs the familiar red âAlert!â banner next to a worried-looking expert. In the background, thereâs footage of something on fire, or something melting, or some awful-looking pile of trash. Even though the sound is down, you can pick out the phrases âscientists warnâ and âwithout further action.â Ugh. You sigh loudly. You look away. You feel bad about this latest catastrophe ⌠but also irritated. Isnât this someone elseâs faultâall those stupid people more wasteful and shortsighted than you? Screw those people, whoever they are. Youâyou didnât cause this, at least not directly. Besides, maybe theyâre just exaggeratingâhopefully. The media exaggerates, right? You flip off the TV. Still, you canât shake a lingering sense of unease. None of this is really your fault, and yet you also feel a little stab of guiltâor maybe itâs sadness? Itâs something unnamable, a sensation in search of a word.
This is life in the Anthropoceneâor one part of it, anyway: the unsettling feeling that Earth is off-kilter, and that everyone, but no one in particular, is responsible. Itâs not your imagination. Climatologically speaking, we are living in momentous times. According to the United Nations, the last six years (2015â2020) were the hottest on record; temperatures in the Arctic have risen three degrees Celsius since 1990.1 Globally, July 2019 was the hottest July ever recorded by the National Oceanic and Atmospheric Administration.2 According to NASA, arctic sea ice is melting at a record pace.3 I could list other alarming developments, although most peopleâeven climate skepticsâcan tell without consulting statistics that that weather outside their window is changing, and that things seem similarly out-of-whack elsewhere.
For scientists, the term âAnthropoceneâ refers to changes in Earthâs systemsâto the myriad ways humans have altered the oceans, the land, and the air. Humanists, meanwhile, invoke the Anthropocene as a historical or cultural label. This chapter examines the Anthropocene from both of these perspectives, as well as a third perspective: that of the nonspecialist struggling to make sense of their role in creating, and responding to, climate change and other large-scale environmental disasters. For many people, the sheer magnitude of todayâs environmental problems forms an emotional barrier to engagement. (Think back to that couch example from a moment ago.) What if ordinary peopleâand not just specialistsâwere to embrace the Anthropocene in both our private and public deliberations about the environment? By introducing geologic time into the conversation, the Anthropocene reframes partisan debates about climate change. It also invites us to imagine new ways of relating to environmentalism. While the idea of the Anthropocene is not a panacea for anger or anxiety, it might help us to cultivate affective stances that are more sustainable, and thus more compatible with action, than amorphous feelings of guilt and helplessness. In the pages that follow, I offer a brief history of the Anthropocene concept, before turning to an in-depth analysis of âAnthropocenicâ thinking and its affordances.
The term âAnthropoceneâ surfaced in scientific literature as early as the 1980s, though its formal emergence is usually traced to a 2000 article in a rather obscure geology publication. In this article, Earth scientist Paul Crutzen and ecologist Eugene Stoermer proposed the term âAnthropoceneâ to describe a global environment dominated by human activity. Mankind, they asserted, has become a geological force whose influence seems likely to endure âfor many millennia, maybe millions of years to come.â Therefore, they conclude, âit seems to us more than appropriate to emphasize the central role of mankind in geology and ecology by proposing to use the term âanthropoceneâ for the current geological epoch.â4 Crutzen reiterated this view in a 2002 article for the journal Nature; it was then that the term âAnthropoceneâ came into widespread usage, catapulting from obscurity to common usage in less than a decade.5
As with any paradigm shift, the notion of an âAnthropoceneâ has been controversial, not only among geologists but among other scientists. At issue is the way we measure and describe planetary history: when exactly does one era of Earthâs history become a new one? For geologists, the question of whether we are indeed in a new era is a matter of stratigraphic evidence.6 Until the debate over the Anthropocene arrived, geologists placed our present day in the Holocene, an epoch that began about 11,500 years ago after the last glacial period. Compared to previous epochs in Earthâs history, this one has been pretty stable, ecologically speaking: Earthâs temperatures have stayed within a 1-degree Celsius range, and, as a result, human civilization emerged and has flourished. Yet things are changing fastâespecially the temperature, which, even in most optimistic projections, is set to rise 1.5 degrees Celsius. Moreover, life on Earth is changing in ways that suggest a catastrophic rupture in the Holocene. On the geologic timescale, several key turning points correspond to mass extinction events (the so-called âBig Fiveâ extinctions). Many experts believe that such an eventâa Sixth Mass Extinctionâis currently underway. Now, if youâre picturing âmass extinctionâ as the kind of event that wiped out the dinosaurs, this might seem far-fetched: there are no flaming meteorites raining from the sky outdoors. Not all mass extinctions are this cinematic, though. For example, the so-called Great Dying that took place at the end of the Paleozoic Era 250 million years ago may have included an enormous volcanic event; if this is true, then what actually killed everything was the global warming and ocean acidification that followed. In our own moment, species are going extinct at a rate that far exceeds the âbackground rateââthat is, the estimated natural rate at which species go extinct, absent catastrophe. (For reference, according to a 2015 study, for mammals, this rate is 2 species per 10,000 per 100 years. A recent study estimates that the current rate of vertebrate loss is 100 times that pace.)7
If previous geologic eras are marked by mass extinctions, and if we are currently in a mass extinction, then it stands to reason that we have entered a new moment in geologic time. It takes time for extinction events to show up in the rock record, though. Will geologists thousands of years in the future be able to pinpoint this event in Earthâs underlayers? Even if the answer is no, weâve made other changes to the planet that may register stratigraphically. For example, humans have massively reshaped Earthâs surface through mining, agriculture, and the building of dams, all of which adds up to some pretty wicked erosion. Weâve also introduced millions of tons of manufactured stuff into the environment. A 2017 article in The Anthropocene Review estimates that the material output of humansâwhat the authors call the âphysical technosphereââweighs about 30 trillion tons. This technosphere âincludes a large, rapidly growing diversity of complex objects that are potential trace fossil or âtechnofossilsâ.â8 In other words, our junk is creating a new Earth layerâone that âalready exceeds known estimates of biological diversity as measured by richness, far exceeds recognized fossil diversity, and may exceed total biological diversity through Earthâs history.â9
Given all of these signs that humans are a planet-altering force, it might seem that the Anthropocene discussion is settled. Geologists are not in agreement, though, about whether to amend the geologic timescale. As geologist Jill Schneiderman explains, âformal stratigraphic practice requires a systematic approach to define, delineate, and correlate sequences of rocks and to identify stratigraphically constrained units of time based on contained rocks, minerals, and fossils as well as chemical and physical parameters.â10 The conditions do not yet exist to perform this sort of analysis because, in terms of geologic time, humans basically just got here. Another difficulty is that âcertain indicators of the Anthropocene,â such as the rise of greenhouse gases in the atmosphere, âdo not leave abrupt boundary layers in strata that would delineate the Anthropocene clearly.â11 Some other markers are not globally synchronous. For instance, if farming marks a significant turning point in Earthâs history, its traces will appear to start at different times, since some parts of the world were cultivated on a mass scale before others.
Here, we arrive at some questions that are interesting to people other than geologists, whose debates might seem arcane to those of us outside the field. Broken down its roots, the term âAnthropoceneâ names the âage of humansâ; it is commonplace to use collective pronouns in discussing âourâ imprint on the planet. However, as numerous critics of the term âAnthropoceneâ point out, our current environmental dilemmas are hardly the fault of âhumankind.â Consider for a moment your personal carbon footprint compared to that of someoneâan anonymous member of âhumankindââin a developing country. The resources brought to bear on housing, transporting, and feeding those of us in the Global North are enormous. To say that âhumansâ have mucked up the air, or the soil, or the oceans is to ignore profound differentials in responsibility. It also means ignoring the uneven distribution of environment-related burdens. To cite an obvious example, sea level rise is an acute problem for only some places, even though we have all contributed to the carbon emissions that drive sea level rise. For now, at least, people not living along coastlines have the luxury of simply ignoring the ocean, while some communities, and even entire island nations in the Pacific, scramble to cope with regular inundation, land loss, freshwater contamination, and other problems.
The disparities that underwrite the Anthropocene manifest in individual bodies, too. Children living near open waste dumps, or near polluting factories, bear the costs of âprogressâ at the level of their very cells. Thanks to a practice known as âregulatory arbitrage,â in which companies exploit weak environmental regulations in certain areas in order to comply with stiffer regulations elsewhere, toxins associated with a European or American product often end up in African bodies. For example, as historian Gabrielle Hecht explains, commodity trad...