Few people know the middle PC in the Media Lab has the capacity to run and produce GIS maps. GIS stands for Geographic Information System, and simply put it’s like Photoshop for maps (think layers) to the power of a spreadsheet. Maps are a tremendously useful way to record and explain data. Through various map layers, GIS also provides an easy way to correlate that data, as there is a literal overlap where data collides. GIS maps are useful for everything from topography, water tables, roadways, sewage and plumbing, to the spread of historic disease, the race and class of neighborhoods, and finding food deserts.