国际自然保护联盟公布,2012年全球被评估的6万多种物种中,有1/3濒临灭绝,人类无休止地索取和破坏是主因。如果人类突然消失,地球上的生物链会不会很快重新建立?美国科学作家艾伦·威斯基于科学依据,大胆推断了人类消失以后的景象。一年2天,城市会因为管道拥堵,到处是污水;7天,城市循环系统陷于瘫痪,紧急备用能源耗尽。10天后,食物开始腐烂,依赖人类生 The International Union for Conservation of Nature (IUCN) announced that one-third of the more than 60,000 species assessed in the world in 2012 were on the verge of extinction, and that endless human claims and damages are the main cause. If human beings suddenly disappear, will the biological chain on earth soon re-establish? American science writer Alan Weiss based on scientific evidence, boldly inferred the disappearance of humankind. Two days a year, the city will be clogged with pipes and sewage will be everywhere; in seven days, the city's circulatory system will be paralyzed and its emergency standby energy will be exhausted. After 10 days, the food started to decay, relying on human health