Solar shields for a climate quick-fix?

It’s something that Jamais Cascio examined in an essay here a while ago, but now New Scientist is mooting the science fictional idea of ‘solar shields’ in the upper atmosphere as a potential geoengineering solution to climate change. Although described as a ‘quick fix’ solution (which is a term that rings loud bells in the head of this engineering-educated reader), they’re keen to point out that it’s also a ‘last-chance saloon’ option to be considered only when everything else has failed … or when we realise it’s too late to try anything else. If the latter scenario proves to be the case, there’s going to be a lot of demand for that new low-tech dew-collecting device.