RAPID spray evaporation (RSE) provides a way of turning seawater into fresh water at a fraction of the cost of conventional desalination methods. Developed by AquaSonics International of Atlanta, Georgia (Â鶹´«Ã½, 12 July, p 15), the process interested me as it is widely believed that access to clean drinking water – or, rather, the lack of it – could become a cause of wars.
I showed the Â鶹´«Ã½ report to Hilary Benn, an overseas development minister, and asked for his view. Benn said that the challenge to increase the supply of water is not purely technological: other desalination technologies have…
