Podcast Hack
The Evolution of TeethBy In Our Time, Gareth Fraser, Zerina Johanson, Philip Donoghue

In a Nutshell

In this April 2019 episode of BBC Radio 4's In Our Time podcast, host Melvyn Bragg talks to experts Gareth Fraser, Zerina Johanson, and Philip Donoghue about how the origins of our teeth could transform the future of dental care.

Favorite Quote

The teeth in the mouth of sharks – and all fishes actually – are almost identical to the teeth that we have. And the genes that make those teeth are almost equivalent across the board.

Gareth Fraser

Introduction

Humans go through two sets of teeth in a lifetime — our baby teeth are replaced over time by our adult teeth, meaning we go through around 50 teeth in total. Sharks, however, go through up to 100,000 teeth.

Despite this massive difference, humans and sharks actually have a lot in common when it comes to teeth.

In Our Time, hosted by Melvyn Bragg, is a science-focused podcast from BBC Radio 4.

In this episode from April 2019, assistant professor of biology Gareth Fraser, researcher Zerina Johanson, and professor of paleobiology Phil Donoghue unpack the evolution of human teeth and what ocean creatures can tell us about our own biology.

Here are the 3 key insights from this Hack

1.
Studying the fossils of fish and sharks can teach us a lot about teeth
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3.
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