E. coli. Such a short name for such a massive topic. This episode we explore the delightful diversity of Escherichia coli, the ubiquitous bacterium that predates humans and can range in virulence anywhere from “you won’t even know I’m there” to “this is really, really, really gonna hurt”. Today we cover the good, the bad, and the ugly: you’ll hear about the innumerable contributions of E. coli to the fields of genetics, evolution, and microbiology, a detailed account of how pathogenic strains can wreak havoc on your guts, and an exploration of one of the most infamous food-borne illness outbreaks in US history. Hoping we’d end it on a happy note? Better luck next time, folks.