Has the Earth stayed the same since its creation, or is it evolving? Do you believe in global warming? Climate change? Or maybe you think something's happening, but whatever it is, Mother Nature will handle it.
I take no side, but here's an observation to chew on. Ever since Aristarchus calculated the distance to the moon around 230 B.C., we have gazed upon the heavens to find out who and where we are. In all those years we have discovered many planets, all of which differ from Mother Earth in one key aspect: they're all dead.
As far as we know, Earth, the third planet from a nondescript, average star hanging around in the Milky Way galaxy, is unique in its ability to sustain life as we know it.
Just how skillful and hardy is Earth at its life-giving attribute? We're testing it right now.
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