People use concepts such as time and date to structure their lives on a daily basis. They often measure their travel by marking points arranged along great circles on the globe. Yet most do not understand the origin and history of these terms and the stories of the intrepid adventurers, scientists, and seafarers who shaped our picture of the world today. Ariel transports readers to faraway lands and ancient cultures that span more than 3500 years of exploration. Phoenicians, Spaniards, Portuguese, British, French, and many others star in an epic that stretches from Lapland to Cape Horn,...