2013 | “You could actually spray sulfuric acid in the stratosphere” – David Keith Link To_2013_David Keith_Colbert_Geoengineering using jets to spray_Sulfuric Acid_ Video     August 7, 2013 Geoengineering Debate MIT Speakers: Oliver Morton, Alan Robock, Daniel Schrag, David Keith, and … Continue reading David Keith Presents Solar Geoengineering Lectures