PCB levels still high in Europe’s killer whales, smaller dolphins
Decades after ban, toxic pollutants remain a threat to long-lived cetaceans
![killer whales](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2016/01/011316_sm_PCB-main_free.jpg?fit=860%2C460&ssl=1)
STILL POLLUTED Some of Europe’s fragile populations of killer whales and other dolphins still carry high concentrations of PCBs decades after the toxic substances were banned.
Andy Foote