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Liz 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.《爱你西蒙》的衍生剧#爱你,维克托##Love,Victor#获得第二季续订！　　第七季还邀请了另外几名超人扮演者友情客串，为该剧增色不少，定能让观看者激动不已。忽然，黄豆从外面飞奔进来，他手腕上缠裹一圈白布，胳膊也绑了绷带，脖颈和颧骨处都贴了膏药，肩背、大腿处的衣裳也是鼓鼓囊囊的，想来里面也上药包扎了，看上去还真是惨兮兮。新・京都迷宮案内4・第9シリーズ 特別編SingleInstance