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Internationalil y a 4 heures
© JOE KLAMAR / AFPCongélation planétaire
Ces roches du Colorado qui pourraient aider les paléo climatologues à percer le mystère de la phase où la Terre était une gigantesque boule de neige
Il y a environ 700 millions d'années, la Terre s'est tellement refroidie que les scientifiques pensent que d'immenses couches de glace ont enveloppé la planète entière comme une boule de neige géante.
