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Tracce di cocaina sono state trovate nei gamberetti selvatici delle contea del Suffolk in Gran Bretagna. La scoperta è stata fatta dagli scienziati del King’s College di Londra, in collaborazione con l’Università del Suffolk.
Gli scienziati hanno prelevato campioni di gamberetti in 15 punti diversi. "La cocaina - ha spiegato Thomas Miller, autore principale dello studio - è stata trovata in tutti i campioni controllati ma è emersa anche la presenza di farmaci come la ketamina e di pesticidi”.
Secondo i ricercatori la causa di questo fenomeno è la contaminazione di fiumi e laghi con scarichi inquinati da pesticidi e liquami urbani. La concentrazione di queste sostanze è però molto bassa e non dovrebbero esserci rischi per la salute.
joe.p.
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