If you’re a Marco Polo fan, there’s a good chance you’ve collected all the videos. But if you want to delete them all at once, here’s how:

  1. Open YouTube and sign in
  2. Click on the three lines in the top left corner of the main screen (the one with your name and email address)
  3. Choose “Delete Videos” from the menu that pops up
  4. Type in your name and email address and hit “delete”