The stakes in their fight to preserve the salmon, and their way of life ... RANDY: [ ♪♪♪ ] [ Woody Guthrie's "Roll, Columbia, Roll" playing ] NEWSREEL NARRATOR: RANDY: [ ♪♪♪ ] AIYANA: ...

And now, as climate change threatens the salmon throughout its life, the stakes of that fight are existential.

He inherited that fight. Now, with climate change threatening the remaining salmon runs, he thinks about the legacy they left for him, the one he’ll pass down to his nephew, George, and to ...