Solar radiation management    Spraying SO2 into the stratosphere enhance cloud albedo    Spraying engineering nanoparticles into the stratosphere to enhance cloud albedo    Placing reflective mirrors, discs, or particles in Earth orbit    Painting roofs and other structures with reflective material    Placing solar reflectors in the desert Carbon dioxide removal    Using physical and chemical processes to remove and store CO2    Enhancing CO2 removal and storage by terrestrial plants    Burial of biomass    Reforestation and afforestation (creating new forests)    Fertilizing the oceans to stimulate CO2 removal by plankton

Table 1: Geoengineering Proposals.