黄石国家公园(Yellowstone National Park)拥有众多的景观和种类繁多的动物,聚集在一个引人入胜的生态系统中。该地区曾经有19000多只麋鹿,但在过去的20年中,其数量猛跌了80%。神秘的下降引发了许多问题,研究人员正在争相提供答案。与他们一起研究从狼到熊到树木再到鳟鱼的一系列理论和犯罪嫌疑人,以解决这个令人震惊的难题。Yellowstone National Park is home to a vast array of landscapes and a huge diversity of animals, united in a fascinating ecosystem, one that is currently in severe trouble. The area once contained over 19,000 elk, but its numbers have plummeted by 80% in the last two decades. The mysterious decline has sparked many questions, and researchers are in a race to provide answers. Join them as they investigate a series of theories and suspects, from wolves to bears to trees to trout, in an attempt to solve this alarming puzzle.