Le Canada vraiment à la carte

In the days of the Great Discoveries, maps were veritable state secrets. Christopher Columbus, Magellan, Vasco da Gama, all explorers owed their success to a series of intrigues centered on stolen maps. You might think that today, maps play a less crucial role, but is this really the case? In the age of satellites, what is the relationship between satellite imagery and cartography? This episode looks at maps, atlases, coordinates, GPS and cardinal points, from ancient societies to the present day.