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Public event EventHandler myEvent;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.Netflix宣布续订#十三个原因##13 Reasons Why#第三季。No.34 Zhang XueyingMajka这一季和Natalia更般配了！手牵手！一生一起走！让我们祝福这对新人这辈子锁死！听了陈启说的那个构想，林白显然已经没有心思吃饭了，匆匆扒了一碗饭，就离开了。太后娘娘，皇后娘娘，可否容臣放肆一回，自行择婿？转向郑氏，娘，可能让女儿任性一次？郑氏对她苦笑：你是我闺女。