The five species of odontocetes that evolved towards menopause live about 40 years longer than the expectation for members of the same species that do not go through menopause, according to Samuel Ellis, researcher at Exeter University.
The link found among these dozens of marine animals renders their connection to human beings all the more evident: they live longer to help the group, and spend the extra time taking care of their grandsons and granddaughters.
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