简介：Before man ruled the world, Earth was a land of giants. Count down the biggest beasts of their kind to ever roam the planet in this eye-opening origin

简介：Scientists are on the verge of answering one of the greatest questions in history: Are we alone? Finding Life Beyond Earth immerses audiences in the s

简介：寻找地球以外生命是PBSNova系列的一部分，由杰伊·桑德斯主持的纪录片.用令人眼花缭乱的动画结合最新的望远镜影像把你带到浩瀚的宇宙，还有顶级天体生物学家的解读。是一部精彩的纪录片。