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Q&A Is there any real potential advantage to having two hearts?

One common way sci-fi writers try to make their aliens seem more 'alien' is to give them an extra heart. This has been done for example in Babylon 5, Dr. Who and Alien Nation among others. But:...

13 answers  ·  posted 8y ago by king of panes‭  ·  last activity 5y ago by king of panes‭

Question biology reality-check xenobiology