What do you see when you look at an elephant? The world’s biggest land mammal – or a giant data store, sharing information in a living, breathing network?Elephants have such sad expressive faces that is hard to imagine how anyone could harm them. They have drawn lips and sagging shoulders; a long, drooping demeanour; sad, knowing eyes capable of laying on the guilt. Yet, it would appear that guilt is not enough to save them. Eighty years ago there were perhaps 6 to 9 million African and Asian elephants