Introduction to the philosophy of science that examines a range of questions about what science is, how it works, and how it manages to be as successful as it is. Explores the goals, methods, principles and practices that characterize scientific enquiry. Surveys major milestones in the philosophy of science, and addresses such questions as: How are scientific claims justified? What constitutes a good explanation? How do we know if our scientific theories are true? How does scientific understanding change over time? What roles do social, political, and cultural factors play in the generation of scientific knowledge? Limited to three attempts.