Science/Technoscience has moved to centre-stage in debates over change, power and justice in twenty-first century societies. This text provides a general framework for understanding, combining and applying the rich range of approaches that exist within sociology about science: in particular, the role (and limitations) of science in generating knowledge, and the relationship between scientific knowledge and social progress. Drawing on case studies from the past up until today's new genetics, this is a clear, even-handed and comprehensive Introduction to the field.