From John Tons, Adelaide, South Australia
There have been a number of articles about geoengineering as a means of averting catastrophic climate change. It isn’t so much a scientific problem but a political one. All solutions require global cooperation – something that remains elusive. However, guerrilla approaches can work! For example, we know shrinking icecaps mean less radiation is reflected back. If every roof in the world were painted white, we would go a long way to compensating for the icecap loss. While we wouldn’t get 100 per cent compliance, it is the sort of campaign that could capture the imagination (25 October, p 6).
