Eons (2017)
S5E30 The Fossil Record In Your Mouth
Episode Overview
The tough buildup that gets cleaned off your teeth at the dentist is known as dental calculus, and it's unique in that it's the only substance in your body that can fossilize while you're still alive! Researchers have discovered methods to analyze and track the evolutionary journey of these microbes spanning tens of millions of years.
HD
S5