Henri Grissino-Mayer is a professor of geography and director of the Laboratory of Tree-Ring Science. He uses dendrochronology, the science of tree rings, to learn about the past environment.
Natural Disasters Experts
Dawnie Steadman is a professor of anthropology who specializes in forensic anthropology, bioarchaeology, and human rights investigations.
Bob Hatcher is a distinguished scientist and professor of earth and planetary sciences. He is an expert in geology, earthquakes, landslides, and other geological events in Appalachia and the Southeast.