Europe is still frozen but we should not complain – and perhaps our predecessors did not mind the cold either. This brilliant painting of a medieval garden yard is from Les Très Riches Heures du Duc de Berry. The painting is dated to c1410 – so we can celebrate its 600th annniversary. The wattle fencing is exquisite. The sheep are better protected than on a modern farm. The beehives are in good order and produced a more nutritious sweetner than our refined and dangerous sugars. Mum is modest but the young girl and boy are exposing their genitals to the warmth of a fire. It reminds me of a lecture from the president of the students union in my first week at university. He solemnly informed his audience that if, before intercourse, a man spent an hour with his testicles between two lightbulbs it would reduce the risk of an unwanted pregnancy. I never put the theory to the test.