X
27353641acute
belayclappingdance3dashdirol
drinksfoolgirl_craygirl_devilgirl_witch
goodgreenheartJC-LOLJC_doubledown
JC_OMG_signkisslaughingman_in_lmocking
mr47_04musicokroflsarcastic
sm_80tonguevishenka_33vomitwassat
yahooshoot

Thirteenth Rib

Most humans have twelve ribs, while our distant relatives, the gorillas, and chimpanzees, have an extra thirteenth rib. Turns out, eight percent of the human population has the extra rib as well.

X
How You Can Find Evolution On Your Own Body
>
19/25
<