This volume brings together authors from diverse experiences and analytical traditions, encouraging a conversation between science and technology and development studies around issues of science, citizenship and globalization. The book reflects on the nature of expertise; the framing of knowledge; processes of public engagement; and issues of rights, justice and democracy. Different case studies cover issues ranging from medical genetics, agricultural biotechnology, occupational health and HIV/AIDS in settings including rural Sierra Leone, urban Britain, China, South Africa, India and Brazil.