Geotagged tweets used to better assess urban mobility, neighborhood isolation in 50 U.S. cities

Findings of a research study show that even though residents of black and Hispanic neighborhoods traveled outside of their home neighborhoods, they were far less exposed to nonpoor or white middle-class neighborhoods than residents of primarily white neighborhoods, suggesting that segregation persists in some of the country’s largest cities. Two authors of the studyMario L. Small, PhD, and Robert J. Sampson, PhD—are affiliated with the Harvard Pop Center.