LizBonninpresentsacontroversialandprovocativeepisodeofHorizon,investigatinghownewscientificresearchi
sraisinghardquestionsaboutzoos-thefilmexploreshowandwhyzooskeepanimals,andwhethertheyneedtochangetokeepupwithmodernscienceorultimatelybeconsignedtohistory.Shouldzoosculltheiranimalstomanagepopulations?LiztravelstoCopenhagenZoo,whokilledagiraffeandfedittothelions,towitnesstheircullingprocessfirsthand.Theythinkitisanaturalpartofzookeepingthatisoftensweptunderthecarpet.Shouldsomeanimalsneverbekeptincaptivity?Inaworldexclusive,LizvisitsSeaWorldinFloridaandasksifcaptivitydroveoneoftheirorcastokillhistrainer.Butcouldzoosbetheanswertoconservingendangeredspecies?Lizexaminestheirrecord,fromhelpingbreedpandasforthewildtoeffortstosavetherhinos.Shemeetsoneofthelastsurvivingnorthernwhiterhinosanddiscoversthefutureofthisspeciesnowliesinamultimillion-dollarprogrammetoengineerthemfromstemcells.VeteranconservationscientistDrSarahBexelltellsLizthescienceofcaptivebreedingisgivinghumanityfalsehope.
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