We’ve overshot the ‘safe’ level of atmospheric greenhouse gases are are going to be forced to look for ways to artificially cool the planet, or alternatively, to rapidly drawn down free-air CO2. Most geoengineering solutions look to do the former. For instance, the ‘simulated volcano’ (stratospheric sulphates) or ‘sunshade world’ (mirrors in space) are intended … Continue reading Geoengineering – damned if you do, damned if you don’t?