In the Leicester Codex, Leonardo da Vinci wrote a geological prophecy: by observing the layers of rocks and also studying the texts of ancient peoples, he predicted that the melting of the earth's ice would cause the submergence of all lands and thus the end of human civilization. 

Starting from Leonardo's books, the discussion also extends to current and burning issues: warming due to excessive pollution has dramatically accelerated some natural processes that the peoples of the past had already noticed.

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In this way a charismatic character like Leonardo, who attracts everyone's attention, is used to talk about the most important problems of our time.