Laakso, Anton; et al. (2012): Stratospheric passenger flights are likely an inefficient geoengineering strategy
NewScientist: Could we geoengineer the climate with CO2?
Rathenau Instituut Blog: Is artificial global cooling cheap?
Biochar Discussion at the Summer School 2012
University of Queensland: Short conference report on "Climate Engineering ICCP2012"
ClimateCentral: Scientists Suggest ‘Cloud Brightening’ To Halt Hurricanes
Bit of science: Climate cooling through SRM geoengineering costs less than 5 billion dollars per year