Scientists Ask Blunt Question on Everyone's Mind
NASA scientist and climatologist James Hansen takes part in a mock funeral parade during Climate Change Campaign Action Day in 2009 in Coventry, England
Photo by Christopher Furlong/Getty Images.
Many of us have wondered at some point in almost precisely these terms: "Is Earth F**ked?" But it's not the sort of frank query you expect an expert in geomorphology to pose to his colleagues as the title of a formal presentation at one of the world's largest scientific gatherings.
Nestled among offerings such as "Bedrock Hillslopes to Deltas: New Insights Into Landscape Mechanics" and "Chemical Indicators of Pathways in the Water Cycle," the question leapt off the pages of the schedule for the American Geophysical Union's fall meeting. Brad Werner, a geophysicist at the University of California, San Diego, is one of the more than 20,000 Earth and atmospheric scientists who descended on downtown San Francisco this week to share their research on everything from Antarctic ice-sheet behavior to hurricane path modeling to earthquake forecasting. But he's the only one whose presentation required the use of censorious asterisks. When the chairman of Werner's panel announced the talk's title on Wednesday, a titter ran through the audience at the naughtiness of it all.
Why shout out the blunt question on everyone's mind? Werner explained at the outset of the presentation that it was inspired by friends who are depressed about the future of the planet. "Not so much depressed about all the good science that's being done all over the world—a lot of it being presented here—about what the future holds," he clarified, "but by the seeming inability to respond appropriately to it."
That's probably an apt description of legions of scientists who have labored for years only to see their findings met with shrugs—or worse. Researchers from the Tyndall Centre for Climate Change Research at the University of East Anglia, for instance, published a paper in Nature Climate Change this week showing that carbon emissions have reached record levels, with a 2.6 percent projected rise in 2012. In another AGU presentation, Pieter Tans of the National Oceanic and Atmospheric Administration posed the question: "Will realistic fossil fuel burning scenarios prevent catastrophic climate change?" He did not seem optimistic. "We might end up burning 900 billion tons of carbon" from oil, gas, and coal, he announced. "We can have a managed path to lower emissions—or do it by misery." A guy next to me in the audience gave a kind of hopeless snort. The head of NOAA and polar experts held a news conference at the conference entitled, "What's going on in the Arctic?" This year broke all sorts of records: the lowest recorded sea-ice extent, the lowest recorded snow cover extent and duration, and the most extensive recorded melting event on the surface of the Greenland ice sheet, among other milestones. "I've studied Greenland for 20 years now; I've devoted my career to it," Jason Box of Ohio State University intoned somberly, "and 2012 was an astonishing year. This was the warmest summer in a period of record that's continuous in 170 years."
Werner's title nodded at a question running like an anxious murmur just beneath the surface of this and other presentations at the AGU conference: What is the responsibility of scientists, many of them funded by taxpayer dollars through institutions like the National Science Foundation, to tell us just exactly how f**ked we are? Should scientists be neutral arbiters who provide information but leave the fraught decision-making and cost-benefit analysis to economists and political actors? Or should they engage directly in the political process or even become advocates for policies implied by their scientific findings?
Scientists have been loath to answer such questions in unequivocal terms. Overstepping the perceived boundaries of prudence, objectivity, and statistical error bars can derail a promising career. But, in step with many of the planet's critical systems, that may be quickly changing. Lately more and more scientists seem shaken enough by what their measurements and computer models are telling them (and not just about climate change but also about the global nitrogen cycle, extinction rates, fisheries depletion, etc.) to speak out and endorse specific actions. The most prominent example is NASA climatologist James Hansen, who was so freaked out by his own data that he began agitating several years ago for legislation to rein in carbon emissions. His combination of rigorous research and vigorous advocacy is becoming, if not quite mainstream, somewhat less exotic. A commentary in Nature last month implored scientists to risk tenure and get arrested, if necessary, to promote the political solutions their research tells them are required. Climate researchers Kevin Anderson and Alice Bows recently made an impassioned call on their colleagues to do a better job of communicating the urgency of their findings and to no longer cede the making of policy prescriptions entirely to economists and politicians.
Lonnie Thompson, one of the world's foremost experts on glaciers and ancient climates, framed the dilemma in a speech he gave to a group of behavioral scientists in 2010:
Climatologists, like other scientists, tend to be a stolid group. We are not given to theatrical rantings about falling skies. Most of us are far more comfortable in our laboratories or gathering data in the field than we are giving interviews to journalists or speaking before Congressional committees. Why then are climatologists speaking out about the dangers of global warming? The answer is that virtually all of us are now convinced that global warming poses a clear and present danger to civilization.
That's the sound of serious-minded scientists fretting out loud to the rest of us that the earth is indeed f**ked, unless we get our s**t together. More and more are willing to risk professional opprobrium to drive that message home.
Box is a prime example. A veteran Arctic researcher, Box was arrested alongside more than 1,000 others in 2011 outside the White House while protesting the proposed Keystone XL pipeline, which would bring oil from Canadian tar sands to the Gulf of Mexico for export, thus facilitating the liberation of a vast quantity of climate-warming and ice-sheet-disintegrating carbon. "Taking that stand was arguably the most important thing I've done," he told me, and that includes a highly regarded body of work on Greenland ice-sheet dynamics. "I've taken a number of perceived political risks. The groupthink was, 'You're wasting your time, you're risking your career,' " he said. Such actions might one day keep him from membership in the National Academies of Science, he mused aloud, but he didn't seem too concerned. As he sees it, he can pursue rigorous science and be an engaged, concerned citizen at the same time. "I have a 14-month-old daughter," he explained simply.
The bulk of Werner's talk, as it turned out, was not profane or prophetic but was a fairly technical discussion of a "preliminary agent-based numerical model" of "coupled human-environmental systems." He described a computer model he is building of the complex two-way interaction between people and the environment, including how we respond to signals such as environmental degradation, using the same techniques he employs to simulate the dynamics of natural systems such as permafrost, glaciers, and coastal landscapes. These tools, he argued, can lead to better decision-making. Echoing Anderson and Bows, he claimed it as a legitimate part of a physical scientist's domain. "It's really a geophysics problem," he said. "It's not something that we can just leave to the social scientists or the humanities."
Active resistance by concerned groups of citizens, analogous to the anti-slavery and civil rights movements of the past, is one of the features of the planetary system that plays an important role in his model. If you think that we should take a much longer view when making decisions about the health of the "coupled human-environmental system"—that is to say, if you're interested in averting the scenario in which the Earth is f**ked—then, Werner's model implied, resistance is the best and probably only hope. Every other element—environmental regulation, even science—is too embedded in the dominant economic system.
I asked Werner what he sees as scientists' role in contributing to this kind of resistance, the kind of direct action taken by researchers like Hansen and Box. Werner views his own advocacy as separate from his scientific work. "To some extent, [science is] a job, and a job I really like, and I have the good fortune and privilege to have," he told me. "In my other life, I am an activist, but there's a line. Both sides inform the other. And I think that that is healthy. But when I'm doing geophysics, I'm a geophysicist. When I'm doing activism, I'm an activist."
Werner agreed that more and more scientists are now engaging in advocacy than in the past. "Even if you say, 'OK, I'm not going to advocate anything. I am simply going to make sure that I am going to produce results which are useful and available to a broad range of people,' that's a decision that researchers have to make." This is not just an academic question. Anderson and Bows' work, for instance, suggests that economic growth in the short term is simply incompatible with the (nonbinding) commitments made by most U.N. member states to keep temperature rise below 2 degrees Celsius (3.6 degrees Fahrenheit). This, of course, is not a message that is making any headway with the leaders of those countries. "The elephant in the room sits undisturbed while collective acquiescence and cognitive dissonance trample all who dare to ask difficult questions," Anderson and Bows write. Getting relevant information into the hands of those more likely to ask those questions is, Werner said, part of his responsibility as a scientist.
Box agrees and is launching a new initiative called the Dark Snow Project, which aims to conduct the first crowdsourced scientific expedition to the Arctic, measuring how soot from North American wildfires might be accelerating Greenland's ice melt. He and his colleagues plan to make their results publically accessible via video and other online tools, and he sees the project eventually growing into an organization that does rapid-response field science in the public interest.
As for the big question—is Earth f**ked?—Werner announced in his talk that he has done some preliminary runs of his model. At this point I could sense the audience lean forward collectively on their seats. First he simulated the global economy proceeding into the future without the drag of environmental management decisions. "What happens is not too surprising," he told us evenly. "Basically the economy fast chews up the environmental resources, depletes those reservoirs, resulting in a significant amount of environmental damage."
Then he factored in some environmental management, presumably of our standard, EPA cost-benefit-analysis-driven variety, and found that "it delays the environmental damage but it doesn't prevent it."
That's not too surprising either. (But it also implies we're eventually, definitely f**ked.) Still, there's a choose-your-own-adventure element to the story that has yet to play out. Resistance, Werner argued, is the wild card that can force dominant systems such as our current resource-chewing juggernaut onto a more sustainable path. Werner hasn't completed that part of his model, so we'll have to wait to find out what happens. But during the Q-and-A session, he conceded that "even though individual resistance movements might not be fast enough reacting to some of these problems, if a global environmental movement develops that is strong enough, that has the potential to have a bigger impact in a timely manner."
In other words, according to at least one expert, maybe the Earth is not quite f**ked yet after all. But the ultimate outcome may depend on how much, and how many, scientists choose to wade into the fray.