Excerpt from this article:
This summer, The Upshot conducted an analysis of every county in the country to determine which were the toughest places to live, based on an index of six factors including income, education and life expectancy. Afterward, we heard from Hal Varian, the chief economist at Google, who suggested looking at how web searches differ on either end of our index.
The results, based on a decade of search data, offer a portrait of the very different subjects that occupy the thoughts of richer America and poorer America. They’re a glimpse into the id of our national inequality.