The John C. Sullenger Vineyard at Nickel & Nickel Winery, Napa Valley, Calif. Nickel & Nickel collaborated with scientists to collect wine samples and identify the bacteria and fungi in them by sequencing microbial DNA. Jason Tinacci/Courtesy of Nickel & Nickel hide caption

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Jason Tinacci/Courtesy of Nickel & Nickel

It's not just kombucha and yogurt: Probiotics are now showing up in dozens of packaged foods. But what exactly do these designer foods with friendly flora actually offer — besides a high price tag? Saul Loeb/AFP/Getty Images hide caption

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Saul Loeb/AFP/Getty Images

(Top left to right) Cladosporium werneckii, Aspergillus fumigates and Aspergillus fumigateurs. (Bottom left to right) Sepedonium, Aspergillus niger and Fusarium. Centers for Disease Control and Prevention hide caption

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Centers for Disease Control and Prevention

When a baby is born by cesarean section, she misses out on Mom's microbes in the birth canal. Sarah Small/Getty Images hide caption

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Sarah Small/Getty Images

Researchers Test Microbe Wipe To Promote Babies' Health After C-Sections

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The stomach of Oetzi, who was mummified in ice, was home to bacteria that scientists were able to identify. The same species lives in the gut of many modern humans. EURAC/Marion Lafogler hide caption

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EURAC/Marion Lafogler

Stomach Of Ancient Iceman Held Microbes Like Ours

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Artist Rogan Brown's paper sculptures are many times larger than the organisms that inspire them. Magic Circle Variation 5 is approximately 39 inches wide by 39 inches tall in its entirety. Brown has created multiple versions of Magic Circle, the shape of which alludes to a petri dish and a microscope lens. Courtesy of Rogan Brown hide caption

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Courtesy of Rogan Brown

Researchers used cotton swabs to sample bacteria and other microbes from the skin of donated corpses placed in a field in Huntsville, Texas. Katie Hayes Luke for NPR hide caption

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Katie Hayes Luke for NPR

Tiny Witnesses: Microbes Can Tell When A Murder Victim Died

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The purple-stained Rothia dentocariosa bacteria are frequently found in the human mouth and respiratory tract. CDC hide caption

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CDC

Missing Microbes Provide Clues About Asthma Risk

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Thomas Kuhlenbeck/Ikon Images/Corbis

Wherever You Go, Your Personal Cloud Of Microbes Follows

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Feces contain digested food residue and a wide variety of microorganisms, mostly bacteria, that are adapted to life in the intestines. The gases the microbes produce could help doctors and scientists track and understand changes related to health. Scimat Scimat/Photo Researchers/Getty Images hide caption

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Scimat Scimat/Photo Researchers/Getty Images
Vidhya Nagarajan for NPR

Kids, Allergies And A Possible Downside To Squeaky Clean Dishes

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The Pseudomonas stutzeri bacterium, commonly found in soil, was the most prevalent subway microbe. Lower Manhattan was its prime hangout. Mason/Cell Systems 2015 hide caption

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Mason/Cell Systems 2015

Biologist Rob Knight, co-founder of the American Gut Project, recently moved the project to the University of California, San Diego's School of Medicine. Casey A. Cass/University of Colorado hide caption

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Casey A. Cass/University of Colorado

Lactobacillus acidophilus, which is one variety of the genus Lactobacillus is one of the common active cultures found in yogurt and in the human gut. Scimat Scimat/Getty Images/Photo Researchers hide caption

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Scimat Scimat/Getty Images/Photo Researchers

Rob Knight, co-founder of the American Gut Project at the University of Colorado in Boulder, works in the lab where the samples are processed. The American Gut Project hide caption

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The American Gut Project