Automatic speech recognition systems add age-inappropriate captions to children’s YouTube videos. An AI technology that will let you create digital images by describing what you want to see. In praise of the em dash. Celebrating the 100th anniversary of T.S. Eliot’s “The Waste Land.” Improving the recyclability of flexible plastic packaging. Graphene may save lives. Required reading: “The Price of Nails Since 1695.” What was statistically the most boring day in history? Mushrooms speak! A mobile phone umbrella, for some reason. All that and more in WhatTheyThink’s dead serious weekly miscellany.