This book challenges the current state of childhood studies by exploring children and young people's agency and relationships. It considers how recent theorisations of relationships and relational processes can move childhood studies forward, particularly in relation to re-thinking claims of children and young people's agency and uncritical assertions around children and young people's participation and voice. It does this by bringing together case studies of children's inter-generational and intra-generational relationships from both the Majority and Minority Worlds. The main themes include negotiated power, agency across contexts and negotiations of identity. The chapters show both the heritage of childhood studies, particularly within the UK, and where it may be going. One of the key aims of the book is to add to the limited but growing cross-world dialogue that encourages cross-cultural learning from research and practice in both Majority and Minority World contexts leading towards a more integrated global approach to childhood studies. This book was published as a special issue of Children's Geographies .