SciShow

SciShow

How Does Hair Know When to Stop Growing? (2015x72)


Udgivelsesdato: Maj 19, 2015

The hair on your scalp can get really long, but your leg hair doesn’t sweep the floor. Why not?

  • Premieret: Jan 2012
  • Afsnit: 3678
  • Følgere: 2
  • Kørende
  • YouTube
  • Daily