Month: January 2019

PCBs and Orcas: Are PCBs Really Decimating the Ocean’s Killer Whales?

Over the past year there have been a number of articles published about reproductive risks to orcas (killer whales) posed by PCBs (example articles 1, 2, and 3).  Some of these articles go so far as to claim that orcas are threatened with extinction due to their reproduction being inhibited by PCBs. But do PCBs […]