If we faced a countdown to destruction, could we build a spacecraft to take us to new and habitable worlds? Can we Evacuate Earth? NGC's two-hour special examines this terrifying but scientifically plausible scenario by exploring how we could unite to ensure the survival of the human race.更多《路上有狼》免费在线观看、路上有狼高清完整版在线、路上有狼无删减完整在线观看相关欧美综艺资源，请持续关注小智乐影视在线!