In this groundbreaking Research Handbook on the Sociology of Youth, researchers from around the world examine the social, political, cultural and ecological processes that shape young people's lives and how young people in turn shape the world. Contributors from the Global North and South challenge traditional frameworks as they document the diversity of ways young people now live. The Handbook highlights the active and creative responses of young people as they help shape the world and how they work to overcome inequality, adversity and crisis and aspire to flourishing societies and a healthy planetary future. This innovative Research Handbook offers reflective, critical and accessible analyses of contemporary youth sociology as well as insights into how policy-makers and professionals can apply these research findings to their practice. The Handbook highlights the diversity of theoretical, methodological and conceptual approaches now available reflecting how the field has become increasingly dynamic and ontologically open. The Handbook includes commentaries by young people from across the world and demonstrates how young people are already involved in and are attempting to address the significant issues of our time like climate justice, racism, socio-economic inequalities, forced migration, LGBTQI+ identities, disability, mental health, and violence. In presenting this breadth of new work on the sociology of youth, this groundbreaking Research Handbook offers a major new resource for researchers, teachers, policy-makers, practitioners and students alike.