This cache is one in an ongoing series highlighting important figures in the history of the academic discipline of geography. If you complete this series, you might be ready to pass your qualifiying exams for a PhD in Geography!
Geert Kremer (1512-1594) -- better known by the Latinized version of his name, Gerardus Mercator -- was a Flemish cartographer and geographer. Though his personal travels were limited, he compiled an enormous amount of information from others' explorations and used it to publish an influential series of wall maps, atlases, and globes.
Mercator is best known for the map projection that bears his name. The Mercator projection was a breakthrough for sailors, as any straight line plotted on a map in this projection will show the course of a ship sailing at a constant compass bearing. The Mercator projection acquired a bad reputation in later years as it became widely used in maps not intended as navigational aids, though it should be noted that Mercator himself used other projections in many of his own non-navigational maps.
Mercator is also credited with popularizing the term "atlas" for a book of maps. He was jailed for seven months on suspicion of being a Lutheran, but later released.
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