Mapping the World with GIS: Digital Maps That Think

Imagine you are a city planner for London. A new hospital needs to be built — but where? You need to think about where the most people live, which areas have no hospital nearby, and whether the site floods in heavy rain. Each of those facts is a different kind of information about the same city. How could you look at all of them at once on a single map? That is exactly the problem GIS was invented to solve. Before we dive in, try to answer the warm-up question below.