/u/-Dastardly-'s posts in /r/askscience

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Are we affecting the way that humans evolve as a species by healing the sick and keeping people alive longer? Are we making our species less viable long term by doing this?

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From a scientific point of view, is this quote from Terry Pratchett true?

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From what I understand all life on earth uses DNA to reproduce, are there any theories as to what alternate methods may be used by potential alien species?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Are we affecting the way that humans evolve as a species by healing the sick and keeping people alive longer? Are we making our species less viable long term by doing this?	1
From a scientific point of view, is this quote from Terry Pratchett true?	1
From what I understand all life on earth uses DNA to reproduce, are there any theories as to what alternate methods may be used by potential alien species?	1