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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.讲述了霸气腹黑又偏执的总裁与呆萌年轻的漫画家之间发生的一段轻松又浪漫的爱情故事。了一巴掌，于是他冲出家门。杨长帆亲手端起粥送到胡宗宪面前，丧子之痛，名节尽失，固然悲痛，可还有生者还在，你一妻三妾两子一女还在这里，你抛得下么？胡宗宪闭目不言。　　亲缘2020曹小强是“剩男”这一群体中普通的一员，没有家世背景、工作普通的曹小强为人憨厚，是支可以厚积薄发的长线股。为了抱得美人归，他可是经历了一番苦痛折磨。从脾气火爆的刀马旦、初入社会的小白领、朴实的乡下妹到高学历女医生，他都一一过招。漫漫相亲路，曹小强想要摘掉“剩男”这顶帽子，还真不是那么容易。诙谐幽默的故事背后牵动着一大群人的婚姻问题。本以为韩信多少会有些不情愿。