THE GEOPOLITICS OF GEOENGINEERING. “Keith is steadfastly confident about the technical details. He says a program to cool the planet with sulfate aerosols—solar geoengineering—could probably begin by 2020, using a small fleet of planes flying regular aerosol-spraying missions at high altitudes. Since sunlight drives precipitation, could reducing it lead to droughts? Not if geoengineering was used sparingly, he concludes.”

Do we have a plan to offset global cooling?