BBC地平线我们该关了动物园吗？

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... 爱看影视-电影电视剧在线播放为您提供BBC地平线我们该关了动物园吗？在线观看，更多影视请访问www.iikk.org