Is farting good for us? Where do farts come from? Why do only some make sounds? And what’s up with the smell? We tackle your questions about the gas we all pass in this episode.

Bonus: Dan Knights, the scientist we spoke to on this episode, is really good at solving Rubik’s Cubes:

And to see Le Petomane in action, check out this (sadly) silent film made by Edison in 1900:

Music in this episode by Adam Selzer.

This episode was originally released on September 30, 2015. Listen to that version here:

Fart smarts: Understanding the gas we pass
by Brains On!