Afewmonthsago,co-HostLatifNasser,whowasotherwisehealthy,sawbloodinhispoop.Itwasthestartofamedicaljourneythatmadehim notonlyquestionwhatwasgoingoninhisbody,butalsodigintothesecretgenetic storyofhowwebecamehuman.Curledupinahospitalbathroom,Latiftriestosortoutwhetherhis ordeal istheresultofalong-lostsiblingknifinghiminthegutor,onthecontrary,along-forgottenkindnesssharedbetweentwohuman-ishtravelers. 

SpecialthankstoAzraPremiji, AvirMitra,SuzanneLehrer, DavidReich,SriramSankararaman, AinaraSistiaga, CarlZimmer, CarlyMensch,NihalKaur, CharlotteHsuandBertGambiniattheUniversityatBuffaloMediaRelations,andLatif's GIDoctorFlorenceDamilolaOdufaluandherentireteam, aswellasall thestaffatLACounty-USCMedicalCenterandKeckUSChospitalswholookedafterLatifduringhishospitalization.

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