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10 Unanswered Science Questions — Explained by the greatest minds on YouTube - YouTube
Des questions auxquelles la science n’a pas encore réponduThu Jun 6 11:00:54 2013 - permalink -
via http://www.olissea.com/mb/links/1/?f7VEGg et http://lehollandaisvolant.net/index.php?mode=links&id=20130605121158- https://www.youtube.com/watch?v=UFydagCS9fg