As with all geoengineering, it is hard to test. There no beta Earth. So, while the risks are not absolutely intractable, and acceptance of some form of geoengin

As with all geoengineering, it is hard to test. There no beta Earth. So, while the risks are not absolutely intractable, and acceptance of some form of geoengineering seems inevitable, it would be a mistake to embrace it without first reducing harm to a minimum.