Want to live on Mars?

Humans have long dreamed of leaving Earth behind and living in outer space. But turning the dream into reality hasn't been as easy as "Star Trek" would make it seem. Are we any closer to colonizing the universe?

Source: http://feeds.howstuffworks.com/~r/DailyStuff/~3/MABFNGmxDo4/can-we-live-elsewhere-in-the-universe.htm

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