The Desertification of U.S. Cities
A food desert is any area in the industrialised world where healthy, affordable food is difficult to obtain. It is prevalent in rural as well as urban areas and is most prevalent in low-socioeconomic minority communities, and is associated with a variety of diet-related health problems. (wikipedia)
The USDA recently released a web map app that identifies food desert areas across the contiguous USA. These food deserts are places where at least a fifth of the population lives at or below the poverty line and where there isn’t a supermarket within a one-mile radius (or within a 10-mile radius in rural areas).
Here are the food deserts (pink areas) in Albany, NY: