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Enormi gabbie d'acciaio attraversate da una corrente elettrica a basso voltaggio: è questa una delle possibili soluzioni per frenare la scomparsa dei coralli, sempre più minacciati dai cambiamenti climatici e dall'aumento dell'inquinamento nei mari di tutto il mondo. Secondo i ricercatori che le hanno testate, con questo sistema si sono avuti risultati incoraggianti.
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