From It’s OK to be Smart.

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This is one of the weirdest mysteries of human evolution: Why do we have grandmas? From menopause to our slow maturation and super-long lifespans, humans are quite unique in the animal kingdom. Could grandma be an evolutionary secret weapon? Or is she just a surprise side effect of living long lives?

Thank you to @MamaDoctorJones Go check out her channel!

References: https://sites.google.com/view/mystery-menopause-references/home

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