University of Chicago scientists are collaborating with researchers at the Argonne National Laboratory to build a wide-ranging urban sensing project in Chicago known as the Array of Things (AoT). A network of 500 computer nodes gather data on various livability factors from all over Chicago. These factors include climate, weather, air quality, noise levels, and traffic. The data is gathered in real time and helps individuals understand the complexities of city dynamics. Part of the “Science Nation” series.