The pictures above were made by scientists who study genes. They tell a story.  Two completely different kinds of information are combined to tell it: a map of Europe from our physical world and overlaid on it, the genetic relationship of 1378 people from Europe, shown in two dimensions. The scientific paper from which the diagram comes actually looks at these patterns around the world, and similar patterns are found worldwide to a greater or lesser degree. They were not the first to notice such patterns, but they took their study worldwide. They observe: “geography plays a strong role in giving rise to human population structure“.  By “structure” they mean clustering…