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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.本剧描写近未来的一家人琐碎的日常。未来（NON 饰）每天穿着运动衫在家里打游戏，自称是革命者，梦想构筑人类需要工作的未来。而父亲古吉（槙田雄司 饰）则是固执的保守派，两人总因为工作的事争吵。妈妈今子（堀内敬子 饰）与单纯可爱的机器人kotaro总是温柔地守护着一家人。哥哥友郎（本乡奏多饰）是一个科研者，他相信并支持妹妹的理想，发明了一堆先进道具，然而未来却滥用道具，惹出了一出出闹剧。Hello!Deliberately requesting small byte packets (such as downloading files);Guizhou Province