Philosophy of science is a branch of philosophy concerned with the foundations, methods and implications of science. The central questions of this study concern what qualifies as science, the reliability of scientific theories and the ultimate purpose of science. This discipline overlaps with metaphysics, ontology and epistemology, for example, when it explores the relationship between science and truth. Philosophy of science focuses on metaphysical, epistemic and semantic aspects of science. Ethical issues such as bioethics and scientific misconduct are often considered ethics or science studies rather than the philosophy of science. There is no consensus among philosophers about many of the central problems concerned with the philosophy of science, including whether science can reveal the truth about unobservable things and whether scientific reasoning can be justified at all. In addition to these general questions about science as a whole, philosophers of science consider problems that apply to particular sciences (such as biology or physics). Some philosophers of science also use contemporary results in science to reach conclusions about philosophy itself. The book is organized and written in a way that makes both simple and complex subjects easy to grasp. This valuable book presents current scholarship in important subfields of philosophy of science and addresses an interdisciplinary readership.