GEOENGINEERING - STRATOSPHERIC HYDROGEN SULFIDE AEROSOLS

Examples of proposed geoengineering techniques to limit the effect and impact of climate change due to rising levels of greenhouse gases include the production of stratospheric sulfur aerosols, which was suggested by Paul Crutzen.
This animation of balloons delivering hydrogen sulfide (H2S) is available at : http://www.stockaninews.com/GEOENGINEERING.html