(Anna Rothschild /The Washington Post)
Health and Science
Anna's Science Magic Show Hooray: Why do we have butts?
John Cena asked science reporter Anna Rothschild a very important question: Why do we have butts? Anna went looking for the answers, and her search took her everywhere from the ancient oceans to a laboratory at George Washington University.
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Anna's Science Magic Show Hooray: Why do we have butts?
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