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Scienziati di tutto il mondo (geologi, esperti del clima e di ecologia) si sono incontrati giovedì e venerdì a Berlino per discutere dell'ingresso in una nuova epoca geologica: dall'Olocene, iniziato 11'700 anni fa, potremmo essere passati nell'Antropocene, segnato dall'enorme impatto degli esseri umani sul pianeta.
La questione in realtà è aperta da decenni, ma il congresso tenutosi in Germania sembra aver raggiunto un'intesa sul fatto che i fenomeni urbani hanno ormai un impatto sulla stratificazione del pianeta, oltre che sull'atmosfera, e che distinguere ciò che è naturale da ciò che è opera dell'uomo sta diventando sempre più difficile. Resterebbe solo da definire il "quando" questo cambiamento ha avuto luogo.
Gli esperti indirizzeranno solo nell'agosto del 2016 le loro conclusioni all'International Geological Congress, l'organismo abilitato a sancire la svolta.
pon/Reuters
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