View full lesson: http://ed.ted.com/lessons/you-are-your-microbes-jessica-green-and-karen-guillemin

From the microbes in our stomachs to the ones on our teeth, we are homes to millions of unique and diverse communities which help our bodies function. Jessica Green and Karen Guillemin emphasize the importance of understanding the many organisms that make up each and every organism.

Lesson by Jessica Green and Karen Guillemin, animation by nenatv.