“A giant parasol that hovers high in orbit to block the sun. Refreezing the melting poles by making submarine-sized ice cubes. Pumping extra carbon dioxide deep underground for indefinite storage. Spraying sulfur dioxide into the atmosphere to form clouds to artificially cool the Earth.
As global warming becomes more dire – and nations dither about decreasing emissions – could these controversial technological fixes known as geoengineering buy us time to move away from burning fossil fuels? . . .”