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France is a rich country. But according to surveys it is also an unhappy one. So why is it seemingly a nation of Les Miserables - is it a basic truism that money does not bring you joy, or is it something specific to the French national character? Justin Rowlatt speaks to the economist Daniel Cohen.

Also in the programe, Rahul Tandon reports from Calcutta about the dying Indian profession of street typists. And, James Srodes tells us about a new company that hopes to use online techniques to catch cheats in online exams.