A Unified Report on the "State of the Art" in the Philosophy of Biology In October 1993, the University of Pittsburgh hosted the Second Pittsburgh-Konstanz Colloquium in the Philosophy of Science, with a focus on the rapidly growing field of philosophy of biology. An interdisciplinary group of philosophers and scientists came together to discuss the basic theories and concepts of biology and their connections with ethics, economics, and psychology. The colloquium organizers strove to create an event that would provide attendees with a wide overview on the current state of the philosophy of biology, with as many topics and views on these topics as possible. Those presentations are gathered here in a volume that offers the reader a varied and thorough survey of the field.