Climate Change: A Coordinated Strategy Could Focus Federal Geoengineering Research and Inform Governance Efforts
http://www.gao.gov/new.items/d10903.pdf
Some have questioned whether large-scale engineering efforts, such as removal of some carbon dioxide from the atmosphere or solar radiation management, could mitigate climate change effects. This report examines the state of geoengineering science, federal involvement in geoengineering, and whether federal laws or international treaties restrict the scope of geoengineering efforts. From the Government Accountability Office