Rory Sutherland often makes the point that advertising agencies are uniquely equipped to solve many complex social problems. They are, by some considerable margin, the best in the world at persuasion and behavioural change. The minds that persuaded a billion people to smoke cigarettes are well equipped to persuade people to dig proper latrines and wash their hands.

The medical and logistical response to the recent ebola outbreak was astonishingly swift and efficient, but there were clearly major deficiencies in public communication. Perhaps there's an unrecognised need for "Advertisers Without Borders"?