The human body is full of evolutionary compromises. The loss of the tail may be one of the clearest examples of how change ...
Having a tail that extends beyond the anal opening is a requirement of membership in the phylum Chordata, where humans and ...
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Humans are born with tails—but lose them before birth—and scientists still don’t know why we have them at all
Early in pregnancy, something surprising happens. Every human embryo develops a tail. It is not symbolic or imagined. A real extension forms at the base of the spine, complete with vertebrae. Later, ...
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