Tim Harford writes the Dear Economist column for the Financial Times, in which readers' queries are answered, tongue-in-cheek, with the latest economic theory.
In 1993 the Environmental Protection Agency (EPA) in the United States faced a familiar dilemma: sulphur emissions from coal-fired power stations were causing acid rain but the cost of cleaning
Was Iraq a war for oil? Was Afghanistan a war for oil? Such questions, evoked by the articles by Lutz Kleveman and Rosemary Righter on openDemocracy, imply a grand conspiracy.