Technology that once seemed like science fiction is rapidly becoming reality. In this four-part series, Emily Chang unravels the future of being human in an age of unprecedented innovation.

在一场世界性危机两年后，《波斯人报》跟踪一名被认为已经死亡的情报官员，他被隔离回国，但不管人类的生物学发生了多大的变化，和平都不容易实现。