One advantage of returning to work is being able to catch up on BBC Radio 4’s In Our Time on my commute. This is the podcast of the radio show, ‘a discussion of ideas’, where people who know a particular academic subject very well indeed introduce it to the radio audience without presuming the listeners are idiots. Recent episodes have included Social Darwinism, Chivalry, early Chinese history, and Catastrophism. In other words, the subjects are hugely eclectic, covering all human knowledge. The show is very informative, a great listen.