This upsetting documentary goes to the town with the most terrifyingly high levels of Pfas in the UK, tests the locals and finds that nothing has been done to help them – and now it’s simply too lateForever chemicals are not a fresh scandal that the world is only learning about now: in 2019 there was a Hollywood movie about them, based on a true story from the late 1990s. Mark Ruffalo was Rob Bilott, the crusading lawyer arguing that a West Virginia chemicals company was poisoning the locale. The film, Dark Waters, concerned per- and polyfluoroalkyl substances (Pfas), synthetic compounds that resist oil, water and heat, and which came into wide usage in the 1930s with the invention of Teflon. Their selling point is that they refuse to break down. The problem with them is that they refuse to break down, and once they’re in soil, groundwater, rivers, food or the air, they get into humans’ bloodstream, from where some Pfas are thought to play a role in causing cancer and other serious hea...