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Waste Not, Want Not: Drink Beer To Feed Fish And Help Save The Planet


Forage fish like these at a Chilean processing plant are often used for fish meal used in aquaculture. But critics consider this inefficient and wasteful and worry it could deplete fish populations. Now several companies are developing protein substitutes to replace fish meal.

Industry trailblazers are trying to lessen the energy and resource costs of aquaculture. Possible solutions include using brewery waste, algae, insects or even carbon dioxide to feed the fish we eat.

(Image credit: Julio Etchart/ullstein bild via Getty Images)