W5: Are fish farms pushing salmon towards extinction?

Farmed Atlantic salmon is big business in B.C., but the science on whether or not fish farms on the B.C. coast are a threat to the local wild Pacific salmon population is still murky. CTV's Peter Akman wades into the controversy.
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W5 is Canada’s most-watched investigative, current affairs and documentary program. Tackling major stories and investigations W5 is in its 51st season.