PerspectiveClimate Change

Risks of Climate Engineering

Science  21 Aug 2009:
Vol. 325, Issue 5943, pp. 955-956
DOI: 10.1126/science.1178530

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Summary

As the risks of climate change and the difficulty of effectively reducing greenhouse gas emissions become increasingly obvious, potential geoengineering solutions are widely discussed. For example, in a recent report, Blackstock et al. explore the feasibility, potential impact, and dangers of shortwave climate engineering, which aims to reduce the incoming solar radiation and thereby reduce climate warming (1). Proposed geoengineering solutions tend to be controversial among climate scientists and attract considerable media attention (2, 3). However, by focusing on limiting warming, the debate creates a false sense of certainty and downplays the impacts of geoengineering solutions.