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The argument which you hear all the time (including in this thread) that until we should clean up earth before we look elsewhere has a major flaw. It is pie in the sky dreaming. If we wait for our elected representatives to put aside the vested interests propping up their respective parties and campaigns for something substantial to be done, we will wait in vain. It ain't gonna happen. King coal and emperor oil have got this planet's governments by the shorts and will not be letting go any time soon.
Our fate as a species has already been substantially determined by that unholy alliance.
So, if we wait for the miracle of serious climate-change action, serious atmospheric healing to happen before we venture out to try to find an alternate place for humanity to roost, we will die without discovering the first thing about how to live and thrive off-earth.
On the other hand, if we continue to make the effort and continue to use resources to discover what needs to be done in order to make that possible, we just may have a chance, as a species, to outlive this planet we are so comprehensively destroying.
I vote for looking up and outward while we still can.
Peter
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