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What causes cavities? - Mel Rosenberg
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View full lesson: http://ed.ted.com/lessons/what....-causes-cavities-mel
When a team of archeologists recently came across some 15,000-year-old human remains, they made an interesting discovery: the teeth of those ancient humans were riddled with holes. So what causes cavities, and how can we avoid them? Mel Rosenberg takes us inside our teeth to find out.
Lesson by Mel Rosenberg, animation by Andrew Foerster.
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Film e animazione
Musica
Animali domestici e animali
Gli sport
Viaggi ed eventi
Gioco
Persone e blog
Commedia
Divertimento
Notizie e politica
Come fare e stile
Design e creatività
Homes & Real Estate
Autos & Vehicles
Science & Technology
Fashion & Beauty
Cooking & Foodie
TV & Drama
Products & Reviews
Health & Wellbeing
Brand & Premieres
Local Business & Services
Altro
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