Geoengineering, the use of human technologies to alter the Earth's climate system — such as injecting reflective particles into the upper atmosphere to scatter incoming sunlight back to space — has emerged as a potentially promising way to mitigate the impacts of climate change. But such efforts could present unforeseen new risks. That inherent tension, argue two professors from UCLA and Harvard, has thwarted both scientific advances and the development of an international framework for regulating and guiding geoengineering research.
In an article to be published March 15 in the journal Science, Edward Parson of UCLA and David Keith of Harvard University outline how the current deadlock on governance of geoengineering research poses real threats to the sound management of climate risk. Their article advances concrete and actionable proposals for allowing further research — but not deployment — and for creating scientific and legal guidance, as well as addressing public concerns.
"We're trying to avoid a policy train wreck," said Keith, a professor of public policy at the John F. Kennedy School of Government and Gordon McKay Professor of Applied Physics at the School of Engineering and Applied Sciences at Harvard. "Informed policy judgments in the future require research now into geoengineering methods' efficacy and risks. If research remains blocked, in some stark future situation, only untested approaches will be available."
"Our proposals address the lack of international legal coordination that has contributed to the current deadlock," said Parson, a professor of law and faculty co-director of the Emmett Center on Climate Change and the Environment at the UCLA School of Law. "Coordinated international governance of research will both provide the guidance and confidence to allow needed, low-risk research to proceed and address legitimate public concerns about irresponsible interventions or a thoughtless slide into deployment."
In their paper, the authors state that progress on research governance must advance four aims:
Parson and Keith argue that scientific self-regulation is not sufficient to manage risks and that scientists need to accept government authority over geoengineering research. They emphasize that initial steps should not require new laws or treaties but can come from informal consultation and coordination among governments.
The authors also propose defining two thresholds for governance of geoengineering research: a large-scale threshold to be subject to a moratorium and a separate, much smaller threshold below which research would be allowed. Keith, for example, is currently developing an outdoor experiment to test the risks and efficacy of stratospheric aerosol geoengineering, which would fall below the proposed allowable threshold.
The authors emphasize that this article proposes only first steps. In the near term, these steps frame a social bargain that would allow research to proceed; in the long term, they begin to build international norms of cooperation and transparency in geoengineering.
The paper is available to journalists through the American Association for the Advancement of Science's office of public affairs at 202-326-6440 or firstname.lastname@example.org.
The Harvard School of Engineering and Applied Sciences serves as the connector and integrator of Harvard's teaching and research efforts in engineering, applied sciences, and technology. Through collaboration with researchers from all parts of Harvard, other universities, and corporate and foundational partners, the school brings discovery and innovation directly to bear on improving human life and society.
The Harvard Kennedy School maintains an abiding commitment to advancing the public interest by training skilled, enlightened leaders and solving public problems through world-class scholarship and active engagement with practitioners and decision makers.
The UCLA School of Law, founded in 1949, is the youngest major law school in the nation and has established a tradition of innovation in its approach to teaching, research and scholarship. With approximately 100 faculty and 1,100 students, the school pioneered clinical teaching, is a leader in interdisciplinary research and training and is at the forefront of efforts to link research to its effects on society and the legal profession.
For more news, visit the UCLA Newsroom and follow us on Twitter.
AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.