Liz Bonnin presents a controversial and provocative episode of Horizon, investigLiz Bonnin presents a controversial and provocative episode of Horizon, investigating how new scientific research is raising hard questions about zoos - the film explores how and why zoos keep animals, and whether they need to change to keep up with modern science or ultimately be consigned to history.Should zoos cull their animals to manage populations? Liz travels to Copenhagen Zoo, who killed a giraffe and fed it to the lions, to witness their culling process first hand. They think it is a natural part of zoo keeping that is often swept under the carpet. Should some animals never be kept in captivity? In a world exclusive, Liz visits SeaWorld in Florida and asks if captivity drove one of their orcas to kill his trainer.But could zoos be the answer to conserving endangered species? Liz examines their record, from helping breed pandas for the wild to efforts to save the rhinos. She meets one of the last surviving northern white rhinos and discovers the future of this species now lies in a multimillion-dollar programme to engineer them from stem cells. Veteran conservation scientist Dr Sarah Bexell tells Liz the science of captive breeding is giving humanity false hope.詳情
主演：斯蒂芬·阿梅爾,蓋布瑞·馬赫特,萊克斯·斯科特·戴維斯,喬什·麥克德米特,布萊恩·格林伯格,Troy Winbush,帕頓·奧斯瓦爾特,恩里克·克蘭東尼,布萊恩·鮑姆加特納,阿茲塔·加尼扎達,Rachelle Goulding,內森·維特,Carson A. Egan,瑪姬·格蕾斯,維多利亞·嘉絲蒂,索非亞·佩爾納斯,約翰·阿莫斯,馬特·萊斯切爾,凱文·韋斯曼,愛麗絲·李
