Conspiracy theories, TV thrillers and airport novels are full of the idea that the world is secretly run by a hidden society. We have come up with many names for this shadowy cabal of puppet-masters - ...

In some parts of the world, everyone knows it’s good luck to insult a baby. In others, elves are a fact of life and city planning. And up and down the East Coast, beachgoers swear that a little music ...