Nature

Salmon: Running the Gauntlet

Preview: Season 29 Episode 12 | 1m 27s

Our once great runs of salmon are now conceived in laboratories, raised in tanks, driven in trucks, and farmed in pens. An extended preview for "Salmon: Running the Gauntlet" which premieres 5/1/2011.

Aired: 04/30/11

Rating: NR

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