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ead, Bckhead paused and tinued: Earth' s civilization in 7017 AD reach the sed-level stelr civilization, If humans do not bee extinct within 3 million years, Then in the 3 million years of the earth' s Gregorian dar, human beings will find a p suitable for humaence, In 1.5 billion years of the earth' s Gregorian dar, The luminosity of the sun will increase a lot, causing the earth' s climate to overheat, Threatening the survival of multicellur anisms, the earth' s enviro will be Martianized, At t
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