在30世纪60年代初的地球上,几乎找不到一滴纯净的水,天空不再晴朗,阳光不再灿烂。举目远望.但见山岭光秃,污水横流。从太空望向地球,只能见到一个被层层灰雾笼罩的星球,那颗曾经蔚蓝星球已不复存在,地球上的生物已濒临灭绝……好在天无绝人之路,科学家们 In the early 1960s Earth could hardly find a single drop of pure water, the sky was no longer sunny and the sun was no longer bright. Look up the distance, but see the mountain bare, sewage cross-flow. From space to the Earth, only to see a layer of fog enveloped the planet, the once celestial planet has ceased to exist on the planet's life is on the brink of extinction ... ... Fortunately, the road to no end, the scientists