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He is too often brought back to his discovery of our most famous ancestor, Lucy in 1974. And yet paleontologist Yves Coppens has devoted his entire life to searching for traces of this distant and buried past and has made many discoveries. From the African origins of man to his adaptation to climate change over time, what lessons does this eternal optimist draw from his discoveries, to better understand the challenges we face today? Rebecca Fitoussi received Yves Coppens in "Un monde, un regard". Find the interview. Subscribe to our channel: / @publicsenat Find all the political and parliamentary news on http://www.publicsenat.fr Follow us on social networks: Facebook: / publicsenat Twitter: / publicsenat Instagram: / publicsenat