NOVANOVA Wonders What's Living in You? Season 45 Episode 102 | 53m 40s 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. Aired: 04/04/18 Expires: 05/04/21 Rating: TV-PG Closed CaptioningVideo has closed captioning.Buy Now:PBSBuy DVDs AppleBuy on iTunes AmazonBuy on AmazoncheckmarkAdd to WatchlistWatch PreviewProblems Playing Video?Report a ProblemClosed CaptioningShare:Share this video on FacebookFacebookShare this video on TwitterTwitterShare this video on Google PlusGoogleShare this video via EmailE-mailEmbedEmbed Code for this videoEmbed CodeNOVANOVA Wonders What's Living in You?Season 45 Episode 102Width in pixels px Height in pixels px Copied to your clipboardLabelCopy to ClipboardClick to copy embed code for videoCloseCloseReport a ProblemBefore you submit an error, please consult our Troubleshooting Guide.Type of ErrorVideo doesn't loadVideo loads, but doesn't playVideo jumps back/forwardOnly audio is streamingSponsorship playback errorOtherPlease add more detailsCancelSubmit ReportYour report has been successfully submitted. Thank you for helping us improve PBS Video.CloseCloseClose Learn More Down Meet Talithia Williams Meet Dr. Talithia Williams, host of NOVA Wonders. Giving Birth to a Botfly Could you love a baby botfly? The Poop Cure Fecal transplants are surprisingly effective cures for a dangerous bacterial infection. The Worm That Plagued the South Hookworms once sapped the American South of its health, yet they still afflict millions.Episode Links NOVA Wonder's "What's Living in You?" Homepage Shop NOVA Email NewsletterNational corporate funding for NOVA Wonders is provided by Draper. Major funding for NOVA Wonders is provided by National Science Foundation, the Gordon and Betty Moore Foundation, the Alfred P. Sloan Foundation and public television viewers, with additional funding for “Are We Alone?” and “What’s the Universe Made Of?” provided by the John Templeton Foundation. This material is based upon work supported by the National Science Foundation under Grant No. DRL-1420749. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.