I work mostly on issues at the intersection of ethics and economics, including how we should respond to the under-consumption of vaccines and the over-consumption of antibiotics, and whether the market for biomedical enhancements should be regulated in any way. More generally, my research focuses on collective action problems.  I recently co-edited the first major <a href="https://global.oup.com/academic/product/philosophy-politics-and-economics-9780190207311?cc=us&lang=en&a