In the future, we will have about 100 years the world's population is increasing, certainly. And in this case will cause the overflow of the world. From the foregoing, Will cause many problems, for example, will cause a lack of food, water, fuel, electricity and passports is a significant habitat. And then the man would begin to find new housing. Of course, it will not take on the world again. In my opinion, I think the man would go to a new star. Mars is the most likely man-made technology. And ready to face the new world.
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