The greatest threat to humanity is unprecedented levels of evolutionary novelty.
We're poorly adapted to survive nuclear winter, for example.
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Or how we approach the issue of birth control and abortion. Definitely worth discussion.
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Nuclear winter would be far more devastating if we weren't emitting greenhouse gasses this massively.https://news.nationalgeographic.com/news/2011/02/110223-nuclear-war-winter-global-warming-environment-science-climate-change/ …
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... Or a repetition of the Perm/Trias conditions.
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Only ISS might survive K-T boundary conditions, are they stocked with seeds and reproductive capabilities yet?
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