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  • Au coeur des organes : Le fonctionnement du testicule

    3:12

    La production de spermatozoïdes dans les tubes séminifères du testicule est régulée par la testostérone, dont la production est elle-même contrôlée par des hormones secrétées par le complexe hypotalamo-hypophysaire, situé à la base du cerveau. Mais la testostérone agit elle-même en retour sur le cerveau… Film réalisé par Marc Desenne extrait du site Corpus. Avec le soutien de l'investissement d'avenir (Estim). Durée : 3 min. 12 sec.
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  • Quantum Biology: The Hidden Nature of Nature

    1:35:37

    Can the spooky world of quantum physics explain bird navigation, photosynthesis and even our delicate sense of smell? Clues are mounting that the rules governing the subatomic realm may play an unexpectedly pivotal role in the visible world. Join leading thinkers in the emerging field of quantum biology as they explore the hidden hand of quantum physics in everyday life and discuss how these insights may one day revolutionize thinking on everything from the energy crisis to quantum computers.

    The World Science Festival gathers great minds in science and the arts to produce live and digital content that allows a broad general audience to engage with scientific discoveries. Our mission is to cultivate a general public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future.

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    Original Program Date: June 1, 2012
    MODERATOR: John Hockenberry
    PARTICIPANTS: Paul Davies, Seth Lloyd, Thorsten Ritz

    John Hockenberry's introduction 00:00

    Participant Introductions 06:28

    How is there a convergence between biology and the quantum? 7:45

    Are particles in two places at once or is this based just on observations? 12:43

    Are biological states creating a unique quantum rules? 17:32

    Quantum mechanics is so counterintuitive. 23:00

    Can nature have a quantum sense? 27:29

    The quantum migration of birds... With bird brains? 31:50

    Electron spin and magnetic fields. 37:00

    Cryptochrome releases particles with spin and the bird knows where to go. 40:28

    How is bird migration an example for evolution? 49:13

    photosynthesis and quantum phenomena. 55:00

    Bacteria doing quantum search. 1:00:21

    Is quantum tunneling the key to quantum biology? 1:06:56

    What are the experiments that prove this? 1:12:28

    When fields converge how do you determine causality? 1:19:49

    We have no idea how life began. 1:24:59

    Replication leads to variation which is the beginning of life? 1:31:05

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