The ancient Polynesians settled the giant Polynesian Triangle aboard seafaring canoes a thousand years ago. The navigators could pinpoint tiny islands in the vastness of the Pacific by reading the stars, the winds and the seas swells. It was an amazing achievement—one of the greatest in the history of humanity. Yet it’s a story that almost disappeared. And it’s a story that Wade Davis will tell in this episode of “Light at the Edge of the World”.