Science is often considered a value-free enterprise. Scientists work in labs, churning out facts. Policymakers then decide, based on their values, how to act on these facts. Rarely is life so clean. This course is about the interplay between science and values. First we’ll tackle the issue theoretically, focusing on the so-called inductive risk argument: are values inevitably involved in accepting any scientific hypothesis? Then we’ll tackle case studies, especially those issues in which UC San Diego and the Institute for Practical Ethics have been focused. We’ll draw our examples from those that connect to the environment. A theme will be a tension in conservation. As Ronald Sandler points out, whereas traditional conservation was about restraining us so as to protect nature, e.g., national parks, wilderness areas, pollution, now we are confronted — thanks to climate change and other nonlocal causal factors — with opportunities to change nature so it can live with us, e.g., assisted migration, genetic rescue, rewilding, climate geoengineering.