For years, scientists have tried to build an electronic tongue, a robot that could taste and smell food like we do. But before machines learn to taste their food, they first need to learn how to chew it. Scientists recently designed an artificial mouth that mimics the first vital steps of human digestion -- chewing, saliva release and the initial breakdown of food.

Intro theme and various sound effects by Adam Dylewski; music by Kevin MacLeod (incompetech.com); Creative Commons licensed audio from freesound.iua.upf.edu includes sounds by Jamius and Koops.