Close your eyes and imagine this: airplanes, equipped to disperse sulphuric acid, are flying in the lower stratosphere. When released, the sulphur combines with water vapour to form minute sulphate aerosols. Once spread across the globe, the aerosols will reflect roughly 1 per cent of the sunlight back into space, thus cooling the planet a smidge. This isn’t science fiction; it’s David Keith’s plan… Michael E. Mann, a climate scientist at Penn State University’s Earth System Science Centre, says research by Alan Robock of Rutgers University in New Jersey has shown there are unintended consequences of solar geo-engineering: less rainfall in some places, rapid warming in some regions and cooling in others. Solar geo-engineering, Mann says, would nothing to slow the catastrophic acidification of our oceans.
/ / / Is David Keith’s Climate Solution Genius or Madness?