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I ricercatori dell'Università della California hanno scoperto un fenomeno capace di influenzare direttamente il clima sulla Terra, a 30 anni dalla scoperta del buco dell'ozono.
Si tratta dell'aerosol, un cocktail di particelle emesse dalle fonti più disparate, come centrali a carbone e veicoli, insieme a incendi, vulcani, sabbia dei deserti, fino allo spruzzo delle onde del mare. Le minuscoli polveri possono girare tutto il mondo anche in pochi giorni.
L'aerosol ha vari effetti ambientali, dalla formazione delle nuvole alle precipitazioni.
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