On our website and in our app, “The Economist explains” is one of the best-read features. Today we invite a few of their authors to keep explaining. What is tranq dope? Why did France get so het up about bedbugs (06:48)? Can superstars’ stadium shows actually affect inflation (11:50)? And, having at last seen Donald Trump’s, what is the back story of the mugshot (17:39)?

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