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- PCB pollution threatens to wipe out killer whales Phys.Org
- PCBs Are Killing Killer Whales HowStuffWorks
- Chemical pollution could wipe out half of all killer whale populations CNN
- Learn about Polychlorinated Biphenyls (PCBs) | Polychlorinated Biphenyls (PCBs) | US EPA EPA
- Predicting global killer whale population collapse from PCB pollution Science MagazineFull coverage
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