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Uno dei pilastri del Parco nazionale svizzero è la ricerca. Tra la quarantina di impiegati fissi gli scienziati sono solo tre, ma ogni anno nei 172 chilometri quadrati del territorio protetto si svolgono fino a 40 progetti di ricerca, promossi da università svizzere e istituti all'estero. Una delle mete predilette dai ricercatori è la Val Trup-chun, paradiso degli ungulati. Ascolta il reportage di Grigioni sera.
Grigioni Sera
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