This textbook is a comprehensive, engaging, and user-friendly introduction to philosophy of science written by a philosopher and a scientist. By exploring traditional debates within philosophy of science, as well as analysing contemporary scientific controversies for philosophical bias, the reader is invited to reflect upon how philosophical assumptions influence scientific theory, methods, and practice. Key features: Is an accessible introduction to philosophy of science written by a philosopher and a scientist. Includes some of the many important contributions from women philosophers and scientists. Demonstrates the philosophical influences on scientific thinking, practice, and expert disagreement. Applies philosophy of science to analyse some specific real-life cases of scientific controversy. This book is an essential resource for students and teachers in philosophy of science. It is also ideal for anyone interested in the philosophical influences on contemporary science.