Buck and Sean join Vincent in New York, while Sylvia is with Nels in Salt Lake City to discuss the first mutant ant ever made: disruption of orco, a gene required for function of odorant receptors, causes defects in social behavior and fitness.

From the Microbial Pathogenesis Retreat of the University of Utah School of Medicine, held at the Utah Museum of Natural History, Nels and Vincent speak with faculty members about their work on bacteria, fungi, viruses, and mirror-image biochemistry.