简介：科学家们利用DNA技术证明所有的人类拥有共同的祖先，为此他们来到人类的摇篮——东非。 ScientistsusetheDNAfromarandomgroupofpeopletoshowthatallhumanssharecommonancestors.Onasingledayonasinglestreet,withtheDNAofjustacoupleofhundredrandompeople,NationalGeographicChannelsetsouttotracetheancestralfootstepsofallhumanity.NarratedbyKevinBacon,TheHumanFamilyTreetravelstooneofthemostdiversecornersoftheworld--Queens,N.Y.--todemonstratehowweallsharecommonancestorswhoembarkedonverydifferentjourneys.Regardlessofrace,nationalityorreligion,allofuscantraceourancientoriginbacktothecradleofhumanity,EastAfrica.Whatdidourcollectivejourneylooklike,andwheredidittakeyourspecificancestors?Atwhatpointinourpastdidwefirstcrosspathswiththesupposedstrangerslivinginourneighbourhood?Now,inTheHumanFamilyTree,thepeopleofthisquintessentialAmericanmeltingpotfindoutthattheirconnectionsgomuchdeeperthanacommonZIPcode.…