We are interested broadly in conservation biology, with a special emphasis on understanding and preventing species extinctions. Most of our work is motivated by species invasions or climate change, but we also investigate the role of habitat loss, human exploitation and pathogens on species extinction. Our approach to advancing the theory, practice and policy of conservation is often unconventional. For instance, we often use species invasions as a set of unplanned experiments, ones that enable us to draw unique inferences about issues related to other aspects of conservation, such as the threats from climate change. We are also interested in exploring the usefulness of newly proposed conservation strategies, such as managed relocation, which advocates relocating species outside their historic range to protect them from climate change. Most of all, we are interested in conducting research that is intellectually exciting, novel and relevant.