If the population of the earth grows at the current rate, the earth will eventually have insufficient resources to support human life. For example, if the population growth is still so fast, by the middle of 2 1 century, we will run out of oil used by all cars. Even if scientists invent new ways to feed human beings, the crowded environment on the earth forces us to find a new foothold. However, at present, there are no planets in our solar system that can support the existence of life except the earth. American scientist Carcey Gen said that there may be a solution to this problem.

Segan believes that before the resources on the earth are completely exhausted, it is possible for us to change the atmospheric conditions of Venus and make it a human home like the earth. But the problem is that Venus is much hotter than the earth, and there is only a small amount of water.

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