Prof. Philip J. Sakimoto

United States
Professor of the Practice in Physics and Astronomy, and Director, Minor in Sustainability, University of Notre Dame; Former Program Manager, Space Science Education and Public Outreach Program, National Aeronautics and Space Administration (NASA)

Speaking as a physicist, geo-engineering would like cause more problems than it would solve. We do not know enough to be sure we could do it effectively, and once started it would have to be continued forever. Reduction in carbon emissions is by far the safer and saner way to go.