"The average condition of the people improving or deteriorating, depends upon whether population is advancing faster than improvement, or improvement than population."

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If NASA were advancing a space frontier there would be challenges you've never seen before. You have to be creative and you have to patent some new idea. You get to Mars...well, how do we get the water from the soil? I gotta invent a new device that will do that. And the carbon dioxide in the atmosphere, how can we use that? Can we breathe the oxygen from the carbon dioxide?

— Neil deGrasse Tyson