Friday, 29 January 2010 06:55
Science 29 January 2010:
Vol. 327. no. 5965, p. 527
The Politics of Geoengineering Jason J. Blackstock1,2,* and Jane C. S. Long3
1 International Institute for Applied Systems Analysis, Laxenburg, A2361, Austria.
2 Centre for International Governance Innovation, Waterloo, N2L 6C2, Canada.
3 Lawrence Livermore National Laboratory, Livermore, CA 94550, USA (DE-AC52-07NA27344).
* Author for correspondence:
http://www.sciencemag.org/cgi/content/full/327/5965/527 Despite mounting evidence that severe climate change could emerge rapidly, the global reduction of carbon emissions remains alarmingly elusive (1, 2). As a result, concerned scientists are now asking whether geoengineering—the intentional, large-scale alteration of the climate system—might be able to limit climate change impacts. Recent prominent reviews have emphasized that such schemes are fraught with uncertainties and potential negative effects and, thus, cannot be a substitute for comprehensive mitigation (3, 4). But as unabated climate change could itself prove extremely risky, these reviews also recommend expanding geoengineering research. As such research is considered (5–7), a process for ensuring global transparency and cooperation is needed.