Image credit: Don Davis

A second reason sometimes given in support of human expansion into space is that we might increase the odds of our species surviving an all-out nuclear, bio, or nanotech war. Also, the point is made that we inevitably must explore new frontiers and push the boundaries of our habitation range. It's what we do, and it's part of what makes us human.

How do you feel about these choices? Would you support a major effort to colonize space, whether it's on the Moon, on Mars, in the asteroid belt, or in manufactured habitats? How high a priority should this be?

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