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L'or bleu

dure(1/3) L'origine de l'eau

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Pour cerner les enjeux à venir des ressources en eau, il n'est pas inutile de revenir aux origines. Comment l'eau est-elle apparue sur terre? Comment se renouvelle-t-elle depuis la nuit des temps? Réponses du géologue Ghislain de Marsily, auteur de "L'eau, un trésor en partage" (à suivre: L'or bleu (2/3). Guerres de l'eau)

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