AP Photo

One hundred years ago, the world was introduced to Piltdown Man, seemingly one of the most remarkable discoveries of the age – which turned out to be perhaps the most audacious and brilliant fraud in scientific history. The bones and stones found in a gravel pit near Piltdown Common in Sussex, shortly before the First World War, have been exposed as fakes for more than half a century, yet even now we do not know the perpetrator’s identity or motive.