Have we all been poisoned? PFAS chemicals are all around us and almost certainly in your blood. But just how worried should we be? Michael sits down with Mark Ruffalo and Rob Bilott to talk about the shocking true story behind Dark Waters.Link to Rob Bilott’s excellent book: bit.ly/Rob_Bilott_ExposureSources: bit.ly/Scienceish_Dark_Waters_SourcesProduced by Eli BlockAssistant Producer: Holly AquilinaLearn more about your ad choices. Visit megaphone.fm/adchoices