Do you like the occasional Big Mac or Whopper? It turns out the packaging those fast food favorites come in contain the toxic, forever chemicals known as PFAs. For this week's "Issues of the Environment," Jeff Gearhart from the Ann Arbor-based Ecology Center speaks to WEMU's David Fair about all you need to know to protect yourself and the environment and the work underway to remove PFAS from food packaging and other consumer products permanently.