Health Threats in Drinking Water, Unionization of Amazon, Birkenstocks

Guest host: Lee Cowan. In our cover story, Cowan examines the health threats posed by the prevalence of long-lasting compounds (known as PFAS) in drinking water sources. Robert Costa interviews retiring Vermont Senator Patrick Leahy; Neil Giraldo; David Pogue looks at the rise in unionization efforts at Amazon and other corporations; and Seth Doane finds out how Birkenstock is going toe-to-toe with counterfeiters.