Four points of the compass : the unexpected history of direction

"North, south, east, and west: almost all societies use these four cardinal directions to orientate themselves and to understand who they are by projecting where they are. For millennia, these four directions have been foundational to our travel, navigation, and exploration, and are central to the imaginative, moral, and political geography of virtually every culture in the world. Yet they are far more subjective -- and sometimes contradictory --...