In the final episode of this 3 part video series on how to optimize antibiotic use and how to minimize the emergence of drug resistant pathogens, Dr. Linda Tollefson, Assistant Commissioner for Science at the U.S. Food and Drug Administration, goes in depth on the use of antimicrobial drugs in agriculture, their efficacy, and adverse human health consequences. Dr. Stuart Levy, professor of Molecular Biology and Microbiology at Tufts University School of Medicine, discusses policy, regulatory and funding issues around antibiotic resistance. Both Dr. Tollefson and Dr. Levy take a handful of questions from the audience.The series, "Antibiotics: Is a Strong Offense the Best Defense?" was filmed on September 18, 2008 at the Koshland Science Museum in Washington, D.C. Parts 1 and 2 can be found at www.microbeworld.org.