The Science Behind Butt Hair
Ever wondered why we have earwax, butt hair or why we cry? Well wonder no further!
Original articles -
https://www.iflscience.com/why-humans...
https://www.iflscience.com/people-are...
https://www.iflscience.com/why-do-we-...
00:00 Intro
00:08 Butt hair
01:47 Earwax
03:45 Tears
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