• "Today everyone is focused on reducing nutrient inputs to the sea in order to reduce eutrophication (the effect of excessive nutrients) in the Baltic, but by helping nature itself to deal with the phosphorus that is discharged we can create a turbo effect in the battle against eutrophication, " said Anders Stigebrandt, of the University of Gothenburg's Department of Earth Sciences.

    CNN: Can oxygen pump breathe life into ocean 'dead zone?'

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