Rapid changes in science and technology present challenges to questions of citizenship. This book encourages conversation between science and technology and development studies around issues of science, citizenship and globalisation. Contributors from diverse experiences and analytical traditions reflect on the nature of expertise; the framing of knowledge; processes of public engagement; and issues of rights, justice and democracy. Case studies cover issues ranging from medical genetics, agricultural biotechnology, occupational health and HIV/AIDS in settings as varied as rural Sierra Leone, urban Britain, China, South Africa, India and Brazil. The contributors set out an agenda for analysis and action around confronting mainstream scientific and technical cultures, creating new forms of knowledge-network, and enhancing democratic global citizenship.