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Una persona su sette è toccata dal fenomeno dell'erosione eolica: in molte aree del pianeta, infatti, il vento trasforma terra fertile in deserto e ogni anno tonnellate di polveri fini vengono trasportate per migliaia di chilometri causando malattie polmonari.
Se sulle Alpi il problema è meno evidente, lo si deve alla vegetazione, come sono riusciti a dimostrare gli esperti dell'Istituto per lo studio delle valanghe e della neve di Davos.
La ricerca è stata svolta nella regione, a 2'400 metri di quota, e i risultati quinquennali confermano quelli ottenuti in altri esperimenti teorici.
ATS/dg
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