Sockeye, a species of wild salmon, is born in Kamchatkan waters and spends its entire life in the Pacific Ocean. Only once does it return to fresh waters — to give offspring, start the circle of life, and die. It is an inexhaustible resource that feeds billions of people on the planet, restored every year. But soon, we may find ourselves facing the unimaginable: humans will exhaust the inexhaustible.

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