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Are Northwest orcas really starving? Researchers explore several risk factors

When it comes to saving Southern Resident killer whales, a lot of attention has been focused on declining numbers of Chinook salmon, but scientist Dawn Noren says the problem is a bit more complicated. Other risk factors affecting orca health include trauma from boat collisions, noise from boats, contamination from pollution, disease, and inbreeding. KING 5's Alison Morrow reports.