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Be Smart

Join Joe Hanson as he explores curiosity and illuminates the science behind… well, everything.

Latest episode

Why Your Grandma Is an Evolutionary Mystery

Season 13 Episode 2 | 17m 11s | CC

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 quirky side effect of living long lives?

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