The human quest to become an interplanetary species isn't simply just because we've seen too much "Star Wars."

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Over the past century or so, we've put our home planet under an increasingly dire amount of pressure

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There's only so much space, only so many resources, and even if we do make some ecological moves to avoid turning Earth into a giant landfill, population growth isn't showing any signs of stopping.

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Some believe that settling other planets — and thus, theoretically alleviating the growing strain on even Earth's most bountiful resources — is the only way to preserve our species.

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That being said, humans have been able to flourish on Earth because of those resources, which makes colonizing other planets incredibly challenging (you know,

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assuming that we can figure out a way to actually transport large groups of people to new worlds).

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Thankfully, University of Bristol civil engineer Paul Smith has a plan: he wants to build an Earthly forest in a bubble on the surface of Mars. Naturally.

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"If human population growth is not controlled, natural areas must be sacrificed," Smith wrote in a paper recently published in the International Journal of Astrobiology and spotted by Universe Today

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