Click here. One thing the article doesn’t touch on — how our little spaceship will accommodate so many more passengers if lifespans double.  But hey: if we can figure out how to grow our own replacement organs, we can probably figure out how to live sustainably from the sun’s all-but-unlimited supply of energy.

The harder part may be learning to live together in peace and mutual respect. But there was a Jewish guy a couple of thousand years ago who pretty much worked that out for us, should we learn to listen. [Cue the heavenly chorus.*]

*Or in this case, Leonard Cohen. Just don’t listen too closely to the lyrics. It’s the mood I’m going for.  (Maybe we should go with this instead.  Or this.) 



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