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 moder
简介：Nat[ZiYuantun.Com]ure documentaries presenter Liz Bonnin shows the various tactics animals use to survive in some of the coldest places on Earth. 译文(2): 自然纪录片主持人 Liz Bonnin 向我们展示了动物在地球上最寒冷的地方生存的各种策略。