Until now, studies of human interactions through mobile communication and social media have always been conducted at the country scale. Ultimately, they conclude that social networks are primarily determined by geographic proximity. Now a new study, led by a CEE team of researchers, finds urban social networks are not determined geographically, but socially. The study was published this week in Scientific Reports. “I was interested to investigate the relationship of social networks and human distance with the built environment and urban transportation,” said CEE Professor Marta González, co-author of the paper. For the article, please see here.