郑凯木

视频简介

Unseen Enemy is an essential exploration of reasons 21st-century populations are experiencing a rash of diseases that were once only outbreaks, but have now become full-blown epidemics. This increased risk that we face, and the ways society and individuals can work together to reduce that risk, are explained to the public through the case studies of three epidemics: Ebola, infl...。全世界已经发现和描述了140多万种动植物。南非只占地球表面的2%，但它却有着很一大部分壮观的全球生物多样性。毫无疑问，南非是一个美丽的国家，也是种类繁多的动植物的家园。世界各地的人们都来这里观赏令人惊叹的野生动物和独特的植物群。因此请和我们一道，我们将前往南非一些最令人惊叹和多样化的地貌，会一会一班正在致力于保护南非一些最稀有动植物的专业人士。。