NASA, Part 2, ( Why Manned Exploration is Vital to National Security)

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As the World's population nears 7 billion people it is, in my opinion, vital to national security to in the NASA budget for manned exploration and future colonization. And here's why: First, as we near 7 billion people it is going to get harder to feed everyone, because like everything else in nature overpopulation puts a serious strain on the Earth. Second when an animal group( i.e. deer, moose, lion, etc.) gets overpopulated nature takes over and begins to kill off the excess animal population with hunger and disease. This occurs because with overpopulation the food dwindle to below sustainable amounts which causes the starvation and eventually disease. Now what does this have to do with the human population? The easy answer is: everything, because as we near 7 billion people we are becoming over populated and the proof of this are the famines that are occurring in Africa (among other factors). Third, the Earth is not, in my opinion, going to be able to sustain 8 or 9 billion people without negative consequences. So the only option is manned exploration and colonization, because to stay only on one planet is suicidal for us as a species. Dr. Michio Kaku in one of his books( either Hyperspace or Physics of the Impossible) he talks about the need of us to find and colonize other worlds. Finally as I said in my blog article "NASA, Part1, Why we Must Continue the Manned Space Program" it is in our human nature to not only explore, but to also set foot on, and colonize other lands and other worlds. This is what makes us human and what drives us to the future. So in conclusion the answer to the human popualtion is manned exploration and colonization of space.