be-smart 4 days ago
dr. joe hanson #Science

Be Smart | Why Your Grandma Is an Evolutionary Mystery

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? 


00:00 - Intro: Humans are weird

00:45 - Nature's strangest life cycles

02:25 - The whole point of evolution

04:48 - The mystery of grandmas (it's menopause)

06:02 - Mama Doctor Jones explains the female reproductive system

08:55 - Why do humans live so long after reproductive age?

10:46 - The Grandmother Hypothesis

12:50 - There's just one catch… and a NEW theory!

15:12 - Putting it all together

17:00 - A word from our sponsor



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