NOVA Wonders What's Living in You?
Season 45 Episode 102 | 53m 40s | Video has closed captioning.
Whether they make you fat, fart, or freak out, microbes play a central role in your life. Right beneath your nose—on your face, in your gut, and everywhere in between—trillions of bacteria, viruses, and fungi are so abundant in your body, they outnumber your human cells. But these aren’t just nasty hitch-hikers. Many are crucial to your survival.
Problems Playing Video? | Closed Captioning