Gross and disgusting things are fascinating to Valerie Curtis. She’s a “disgustologist” who joined me on America weekend to discuss her book, “Don’t Look, Don’t Touch, Don’t Eat: The Science Behind Revulsion.” We talked about how being disgusted has helped us evolve as a species, whether different world cultures are disgusted by different things, and how disgust affects what we eat and wear and even who we love. Listen, then click here to subscribe to these podcasts via iTunes!