1. http://www.agu.org/sci_pol/positions/ geoengineering.shtml
2. http://www.ametsoc.org/policy/2013geoengineeringclimate_amsstatement.html
3. http://royalsociety. org/uploadedFiles/Royal_Society_Content/policy/publications/2009/8693.pdf
4. http://www.climateresponsefund. org/images/Conference/finalfinalreport.pdf
5. http://www.science.org.au/natcoms/nc-ess/documents/GEsymposium.pdf