简介：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 Copenha...365影院为您提供《我们该关了动物园吗》免费在线观看，及播出时间。喜欢的话，不要忘记分享给好友哦
