I rarely get speechless, but it happened the first time I asked an audience the following question. It was at a teachers’ conference in Norway (but I don’t mean to be too hard on the Norwegians: it might just as well have been in Finland too). Many of these teachers were teaching global population trends as part of their social science classes. When I turned my head around and saw the results from the live poll on the screen behind me, I couldn’t find words.
