
The UK government recently announced plans to fund five small-scale trials related to geoengineering. It’s the first time a state research funding body has put serious money into what’s known as solar radiation management, or SRM, which seeks to cool the planet by reflecting more of the Sun’s energy back into space.
It’s easy to see why countries have been so hesitant to proceed with projects of this nature: SRM is highly controversial, even among scientists.