This compelling PBS Nature documentary which first premiered in 2011 investigates the parallel stories of collapsing Pacific salmon populations and how biologists and engineers have become instruments in audacious experiments to replicate every stage of the fish’s life cycle

Each of the desperate efforts to save salmon has involved replacing their natural cycle of reproduction and death with human intervention or manipulation. The once great runs of Pacific salmon are now conceived in laboratories, raised in tanks, driven in trucks, moved by boats, and farmed in pens.

In its exploration of a hopelessly complex, and stunningly expensive approach to managing salmon, the film reveals one of the most ambitious plans ever conceived for taking the reins of the planet, ultimately exposing the real values of habitat restoration.

 See the full movie online via PBS http://www.pbs.org/wnet/nature/episodes/salmon-running-the-gauntlet/video-full-episode/6620/