The 40 Million Year Old Ecosystem In Your Mouth

The hardened residue scraped off your teeth at the dentist is called your dental calculus, and your dental calculus is the only part of your body that actually fossilizes while youre alive And scientists have figured out how to study trace the evolutionary history of these microbes over tens of millions of years. PBS Member Stations rely on viewers like you. To support your local station, go to Produced by Complexly for Digital Studios Super special thanks to the following Patreon patrons for helping make Eons possible: Paul Corty, Ric, Casper Lubbers, Roberto Adrian Ramirez Flores, Jason Rostoker, Jonathan Rust, Avery Sanford, Mary Tevington, Bart Elke van Iersel De Jong, Kip Obenauf, Jack Crissy, Jules Martineau, William Craig II, Tracey, Hizrihel Alkawa, James DowlingHealey, Irene Wood, Derek Helling, Margaret Luby, WilCatRhClPPh33, Mark TalbottWilliams, Angel Alchin, Eric Roberto Rodriguez, Hil