From the wild lochs of Scotland to the open ocean of the north Atlantic, Julian Pettifer uncovers the hidden costs of the salmon farming industry and discovers that a high price is being paid by mother nature and ourselves. Is there a connection between the salmon farms and a catastrophic decline in wild salmon close by, and could farmed fish contain toxic chemicals that have worrying implications for people's long-term health?
Producer Jeremy Bristow ; Executive producers Keith Bowers and MikeGunton (S) (W)