Footnote
a In his book The Descent of Man, Charles Darwin described a number of body organs as “useless.” One of his advocates asserted that there were dozens of “vestigial organs” in the human body, including the appendix and the thymus.
a In his book The Descent of Man, Charles Darwin described a number of body organs as “useless.” One of his advocates asserted that there were dozens of “vestigial organs” in the human body, including the appendix and the thymus.