My research focuses on past human-environment interactions in semi-arid and arid environments, specifically in Southwest Asia. My approaches have been broad, from studying the impact of climate change on early farming societies throughout SW Asia using radiocarbon dates, remote sensing and ground survey of smaller areas, to isotope studies of specific sites. In ROOTS, I am part of the Archaeological Stable Isotope Laboratory, where I focus both methodologically on what variables affect plant and animal isotopes and on applying stable isotope analysis to Neolithic archaeological samples from the Southern Levant to understand past environments, agricultural practices, pastoralism, and mobility. I also direct a survey project in the Karak region in Jordan.