For many years now, I have been investigating how natural languages organize talk about mere possibilities: what might have been, could be, or should be. Notions of what is possible, inevitable, likely, or desirable are fundamentally the same and highly systematic across diverse disciplines and cultures, and this is why this area of research has attracted the attention of mathematicians, logicians, psychologists, legal scholars, and philosophers for more than 2,000 years.
With Irene Heim of MIT, I am co-author of Semantics in Generative Grammar and cofounder and coeditor of the journal Natural Language Semantics. I am often called on to serve on advisory boards and panels for research institutes and initiatives, departments, grants, journals and conferences. In this way I can help develop directions for interdisciplinary research in semantics for the 21st century. I have also been active in developing innovative courses and teaching materials for both graduate and undergraduate classes.