István Z. Kiss Professor in the Network Science Institute at Northeastern University London istvan.kiss@nulondon.ac.uk Expertise adaptive and dynamic networks, epidemics, heterogeneous populations, mean-field models, power systems István Z. Kiss for Northeastern Global NewsWhy do the latest fads spread like wildfire? Research explainsNetwork scientists found that the social overlap between groups plays a major part in how fast a phenomena or contagious illness transmits.