LizBonnin resentsacontroversialand rovocativee isodeofHorizon,investigatinghownewscientificresearchisraisinghardquestionsaboutzoos-thefilmex loreshowandwhyzooskee animals,andwhethertheyneedtochangetokee u withmodernscienceorultimatelybeconsignedtohistory.Shouldzoosculltheiranimalstomanage o ulations?LiztravelstoCo enhagenZoo,whokilledagiraffeandfedittothelions,towitnesstheirculling rocessfirsthand.Theythinkitisanatural artofzookee ingthatisoftenswe tunderthecar et.Shouldsomeanimalsneverbeke tinca tivity?Inaworldexclusive,LizvisitsSeaWorldinFloridaandasksifca tivitydroveoneoftheirorcastokillhistrainer.Butcouldzoosbetheanswertoconservingendangereds ecies?Lizexaminestheirrecord,fromhel ingbreed andasforthewildtoeffortstosavetherhinos.Shemeetsoneofthelastsurvivingnorthernwhiterhinosanddiscoversthefutureofthiss eciesnowliesinamultimillion-dollar rogrammetoengineerthemfromstemcells.VeteranconservationscientistDrSarahBexelltellsLizthescienceofca tivebreedingisgivinghumanityfalseho e