This week, Emily Graslie is teaching you about human ancestry and geneaology, how we got to be the species we are, and why that matters in our zoomed out look at Big History.For more information, visit the Big History Project: http://www.bighistoryproject.comCrash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourseThanks to the following Patrons fo
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