Free YouTube views likes and subscribers? Easily!
Get Free YouTube Subscribers, Views and Likes

What causes cavities? - Mel Rosenberg

Follow
TED-Ed

View full lesson: http://ed.ted.com/lessons/whatcauses...

When a team of archeologists recently came across some 15,000yearold 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.

posted by emetinav7