Ken Caldeira on geoengineering.

Source: www.motherjones.com

“Caldeira, now a climate scientist at the Carnegie Institution for Science, recently contributed to a massive National Academy of Sciences report examining various geoengineering proposals. The report concluded that technologies to block solar radiation “should not be deployed at this time” and warned that “there is significant potential for unanticipated, unmanageable, and regrettable consequences in multiple human dimensions…including political, social, legal, economic, and ethical dimensions.”