Temperature is the key to life in a mountain environment, and climate change is forcing mountain animals to travel higher to escape the oppressive heat. Pikas in the Rocky Mountains and nursery frogs in Australia are featured.
地球表面有五分之一是高山,气温是生存的关键。对于长年漫游在冰冻山峰中的动物而言,它们早已经适应世界顶端的生活。然而,全球气温正在快速变化,逐渐暖化的气候让冰冠和冰河融化,山上的动物只能踏上旅程往高处移动以逃离热气。 在本集中,我们要前往科罗拉多山上,探视因为过热而逃跑的鼠兔;还要到澳洲寻找快要绝种的青蛙;再到安地斯山脉,跟着眼镜熊展开一场漫长的迁居之旅。