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For questions about Isaac Asimov, an author of science fiction and popular science. His Robot series introduced the Three Laws of Robotics; he also wrote the Foundation series.

16 votes
5 answers
4k views

Sci-fi story about aliens with cells based on arsenic or nitrogen, poisoned by oxygen

I'm looking for a science-fiction short story, probably written by either Isaac Asimov or Poul Anderson. (I was binging on short stories collections from these two authors around the same time, 5 to 1 …
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