"Dilkina and her team used migration data from the Internal Revenue Service to analyze how people moved across the U.S. between 2004 and 2014." It looks like t

"Dilkina and her team used migration data from the Internal Revenue Service to analyze how people moved across the U.S. between 2004 and 2014." It looks like their analysis may have been skewed somewhat by the fracking boom in America's oil shale country. That may explain the otherwise odd migration pattern into sparsely populated areas running up from Texas through the center of the country.