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...
BiT吧我们的使命是收集全网电影电视剧资源供大家下载观看-请收藏BiT吧
