With literacy rates for young adults now higher than at any other time - 98 to 100 per cent in nearly all European countries and rapidly increasing in the developing world - it seems incongruous that there should be so much concern that teenagers are not reading as much as they used to. And yet, it’s still a major issue in education throughout the developed world. But the concern isn’t really about whether teens can read or not, but more about what they are reading and how much.