What might alligator health have to do with human health? Join Food Sleuth Radio host and Registered Dietitian, Melinda Hemmelgarn, for her interview with Lou Guillette , Jr., Ph.D., Director of the Marine Biomedicine and Environmental Sciences Center, and professor of Obstetrics and Gynecology at the Medical University of South Carolina in Charleston. Guillette describes how sentinel species such as reptiles and amphibians, provide warning signs to humans about environmental hazards. Produced by Dan Hemmelgarn.