So-called forever chemicals are both harmful to our health and are everywhere. Studies have found them in women's breast milk and even in rain falling in Tibet. A new book tells the story of how these extremely durable chemicals became so ubiquitous through the eyes of a small community that decided to fight for some measure of justice. William Brangham reports. PBS News is supported by - https://www.pbs.org/newshour/about/funders. Hosted on Acast. See acast.com/privacy