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January 16, 2019 06:02 pm PST
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/KFhc92hIB58/the-human-body-is-full-of-evol.html
The human body is "full of evolutionary leftovers that no longer serve a purpose"
People have a little pink band in the inside corner of their eye. "This is the plica semilunaris," says Dorsa Amir, an evolutionary anthropologist. "It used to be a third eyelid that would blink horizontally." Amir posted a fascinating Twitter thread of other " evolutionary leftovers that no longer serve a purpose" in the human body.
Did you know the human body is full of evolutionary leftovers that no longer serve a purpose? These are called vestigial structures and theyre fascinating. (1/8)
— Dorsa Amir (@DorsaAmir) January 15, 2019
Image: By Exordium - Own work, CC BY-SA 3.0, Link Read the rest
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/KFhc92hIB58/the-human-body-is-full-of-evol.html
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