Geoengineering has come back into the spotlight after years of being labeled impossible, and a waste of time by both climate change activists, and normal humans. At the end of September, a piece in Forbes discussed the rigor with which geoengineering debates have recently made their way to the United Nations: “Governments, universities, think tanks and international bodies are turning to the idea of tinkering with the earth by making it absorb more carbon dioxide or reflect more sunlight into space” (Forbes).
Just as speculation, it is likely that increased interest in geoengineering is due to recent projects such as self-driving cars, advanced medical technology, and others which have an impact on people’s everyday lives. Suddenly with companies like Uber and Google working to ingrain technology into every aspect of our lives, changing parts of the earth doesn’t seem so far off.
Even with companies and governments becoming more intrigued by the idea of geoengineering as a means to fight climate change, discussion about what this means for humanity’s relationship with our planet has remained closed. Alan Robock, author of “20 reasons why geoengineering may be a bad idea,” lists those twenty reasons, and explains the consequences of each. His worries range from an ecological perspective, to human error perspective, an economic perspective, and ends with a moral concern about our potential ability to control the planet.
Robock discusses many environmental and biological consequences of geoengineering. He notes the changes in atmosphere and weather patterns can have affect the plant life in a region: “… inserting aerosols or reflective disks into the atmosphere would reduce the total sunlight to reach Earth’s surface. Scientists need to assess the impacts on crops and natural vegetation of reductions in total, diffuse, and direct solar radiation” (16). Robock also mentions the dangers of allowing humans to have the control over nature:
“Eighty-five countries, including the United States, have signed the U.N. Convention on the Prohibition of Military or Any Other Hostile Use of Environmental Modification Techniques (ENMOD), but could techniques developed to control global climate forever be limited to peaceful uses?”
Another human consequences may be deciding who is in charge of controlling the climate in the future: “There’s no global agency to require an environmental impact statement for geoengineering. So, how should humans judge how much climate control they may try?”
Since geoengineering falls under the category of human intervention in nature, parallels were drawn between Robock and Sandler. Sandler lists three concerns with interventionist motives:
1 “One is that human interventions into ecological systems are the cause of ecological degradation and the species.”
extinction crisis in the first place.”
- “A second concern is that even if the interventions are successful –e.g. species are translocated and established without becoming ecologically problematic– what is most important about them is not preserved.”
- “A third concern is that interventionist conservation strategies are something of a distraction.”
While Sandler’s focus on human intervention is preserving ecosystems and species, while Robock and other geoengineering articles refer to preserving humanity through intervention, they both have similar consequences. Four of Robock’s twenty reason have a direct relationship with the three of Sandler’s points. Robock’s point 12 (Human Error) supports Sandler’s first point:
“Humans can make mistakes in the design, manufacturing, and operation of such systems. (Think of Chernobyl, the Exxon Valdez, airplane crashes, and friendly fire on the battlefield.) Should we stake the future of Earth on a much more complicated arrangement than these, built by the lowest bidder?” (p.17).
Human error will forever occur as long as humans are thinking, creating, and exploring. Much of our innovations have resulted in the inadvertent warming of the Earth, and we are just now aware of the issue. If humans have altered and interfered with nature when we do not even realize we’re doing it, what risks and consequences will occur when we are aware?
Robock’s first point, Effects on regional climate, is a broader version of Sandler’s second point:
“Scientists have also seen volcanic eruptions in the tropics produce changes in atmospheric circulation, causing winter warming over continents in the Northern Hemisphere, as well as eruptions at high latitudes weaken the Asian and African monsoons, causing reduced precipitation”(p.15).
While Robock does not mention the ecosystems that are present in these areas, it is clear that if we start manipulating atmospheric particles, the defining climate patterns of some areas will be affected. Eventually these regions, which have unique ecosystems, and species will change and adapt and will no longer be valued for what they once were.
Robock points 2 and 13 (Ocean acidification, and undermining emission mitigation, respectively) strongly support Sandler’s third point while many of Robock’s last points also contribute.
While titled ocean acidification Robock mentions that if geoengineering occurs, not all aspects of global warming will reduce or stop:
“If humans adopted geoengineering as a solution to global warming, with no restriction on continued carbon emissions, the ocean would continue to become more acidic, because about half of all excess carbon dioxide in the atmosphere is removed by ocean uptake” (p. 15).
Ocean acidification is one of the largest consequences of global warming, and can be the most destructive since minute changes in ocean pH levels have already caused coral bleachings, fish migrations, and will affect the billions of people that rely on the ocean as a direct resource. If humans focus too much on cooling the Earth for the sake of humans, we may become to compliant with trying to change our other negative actions.
Point 13, blunty states “If humans perceive an easy technological fix to global warming that allows for “business as usual,” gathering the national (particularly in the United States and China) and international will to change consumption patterns and energy infrastructure will be even more difficult.”
This remains a concern today; if humans have the ability to control parts of nature, will we wholeheartedly do it for the general good, or will it be a crutch to keep humans from adapting? Humans have a notorious history for not wanting to adapt, so it is not a surprise that many worry the latter is truer.
One of Robock’s last points is the moral authority of geoengineering. He makes the point that up until a few decades ago, humans were unaware that our actions inadvertently affected the state of the planet, so now that we do know, would it morally right to continue to send particles and pollutants, such as the sulfate particles, into the atmosphere when we know they might do damage? Yes, these particles may help cool the planet, but will we ever be confident that these drastic actions will not have further negative effects?
Robock’s essay was published in 2008, which makes it almost a decade old. It was interesting to research current opinions on geoengineering in 2017 and find that Robock, who is an atmospheric chemistry professor at Rutgers University, attended a geoengineering conference in August. This may suggest that he is more open to the idea today than he was in 2008:
“‘We all agree that climate change is real and that the solution is to reduce the emissions of the gases that cause global warming’,… ‘The Paris Agreement was a good start, but those pledges aren’t enough, and we have to reduce more. Even then it [won’t be] fast enough. So what we’re looking at is: If global warming is so dangerous, could we shave off a little warming while we continue to mitigate greenhouse gases?’” (The Atlantic).
The Atlantic Article: https://www.theatlantic.com/science/archive/2017/08/geoengineers-meet-off-the-record/536004/
The Forbes Article:
https://www.forbes.com/sites/jeffmcmahon/2017/09/24/interest-rises-in-geoengineering-as-humans-fail-to-mitigate-climate-change/#27b6243c6472