You are using an older browser version. Please use a supported version for the best MSN experience.

Why Some Humans Are Born With Tails

There's a whole lot about the human body that hark back to a time where we were a lot more primitive. We're talking tails, extra organs, and that's just the beginning. Trace breaks down some of the coolest human vestigial traits.

Latest Videos

Featured Partners

  • BuzzFeed
  • CNN
  • The New York Times
  • SB Nation
  • Splash News
  • The Wall Street Journal
image beaconimage beaconimage beacon