Social media is buzzing over a picture of a massive dragonfly posted to Facebook by the U.S. Fish and Wildlife Service.

Over 95% of the U.S. general population has quantifiable serum levels of PFAS, with a mean of 2 to 5 parts per billion (ppb) for perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA), ...