Normal and Boring

The superstar illustrator Christoph Niemann is on a mission to better understand Europe. 'In Praise of a Normal, Boring Country', the latest installment of his New York Times visual essay series, took him to Estonia. We rang him up in Berlin to talk about his trip and a bunch of other stuff. Also this week: Dominic gets to grips with debt mutualisation, and Katy gets to grips with mittens.