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GAO Issues Report Evaluating Feasibility of Geoengineering as a  Response to Climate Change (August 25, 2011)

posted Aug 26, 2011, 10:42 AM by James Hodina
The Government Accountability Office (GAO) released a report assessing climate engineering  technologies (also known as geoengineering”) as a  means of responding to  climate change.  Specifically, the report focuses on climate engineering technologies’ technical status, future directions for research and potential responses.  The two primary categories of climate engineering technologies are  carbon dioxide (CO2) removal, which would reduce the atmospheric concentration of CO2 (for example, by enhancing the uptake of CO2 in oceans and forests or 
capturing CO2 from air chemically for storage underground), and  solar radiation management, which would place reflective material in space or in Earth's atmosphere to scatter or reflect sunlight (for example, by injecting sulfate aerosols into the stratosphere to scatter incoming solar radiation or brightening clouds) or would increase the planet's reflectivity (for example, by painting roofs and pavements in light colors).  GAO concludes that “[c]limate engineering technologies do not now offer a viable response to global climate change.”  GAO found that many of these technologies are immature  with potentially negative consequences.  [For further information: http://www.gao.gov/new.items/d1171.pdf
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