Milena Tsvetkova is an Associate Professor of Computational Social Science at the Department of Methodology at the London School of Economics and Political Science. She is also the director of the HUMANET lab, funded by the ERC Consolidator grant with €2,000,000 in 2025–2030 to study interactions and collective outcomes in human-machine social systems. Milena is a computational social scientist, with a PhD in Sociology. She uses large-scale online experiments, network analysis, machine learning, and computational modeling to study fundamental social phenomena such as cooperation, contagion, segregation, and inequality in human and human-machine networks and communities.