Douglas Frantz & Catherine Collins, "Salmon Wars"

Investigative reporters Douglas Frantz and Catherine Collins, co-authors of "Salmon Wars," take a critical look at the commercial salmon farming industry, which now provides 90 percent of the salmon consumed by North Americans. They argue that these large-scale salmon hatcheries threaten the environment and produce fish that are unhealthy for humans to eat.    Learn more about your ad choices. Visit megaphone.fm/adchoices