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The Historyscoper's Science and Technology Watch Blog Apr. 2, 2015

Tuesday, March 22, 2011

After Earth: Why, Where, How, and When We Might Leave Our Home Planet Humanity may have millennia to find a new home in the universe--or just a few years By Ben Austen

http://www.popsci.com/science/article/2011-02/after-earth-why-where-how-and-when-we-might-leave-our-home-planet
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