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The Evolution of Teeth

Teeth are a marvel of nature. They are engineered to crush what we eat without breaking, and to last a lifetime (as long as we keep them fairly clean). Each species of mammal with teeth has developed teeth shapes to deal with the kind of food they eat. Teeth are crucial in identifying fossils and give us a clue as to what food a fossil species ate. 

(YouTube link)

This TED-Ed video takes us through the structure, function, and evolution of teeth. We should all appreciate them before something goes wrong with them -take it from someone who just spent a year undergoing dental reconstruction. -via Digg

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