Tubes of hematite, an iron-rich mineral, might be evidence of microbial life that lived around underwater vents billions of years ago. Matthew Dodd/University College London hide caption

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Matthew Dodd/University College London

Tiny Fossils Could Be Oldest Evidence Of Life On Earth

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Maia Stern, Adam Cole/NPR

Watch Earth's History Play Out On A Football Field

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Pam Marrone (right), founder and CEO of Marrone Bio Innovations, inspects some colonies of microbes. Marrone has spent most of her professional life prospecting for microbial pesticides and bringing them to market. Dan Charles/NPR hide caption

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Dan Charles/NPR

Mighty Farming Microbes: Companies Harness Bacteria To Give Crops A Boost

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Plankton collected in the Pacific Ocean with a 0.1mm mesh net. Seen here is a mix of multicellular organisms — small zooplanktonic animals, larvae and single protists (diatoms, dinoflagellates, radiolarians) — the nearly invisible universe at the bottom of the marine food chain. Christian Sardet/CNRS/Tara Expeditions hide caption

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Christian Sardet/CNRS/Tara Expeditions

Revealed: The Ocean's Tiniest Life At The Bottom Of The Food Chain

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Mattheos Koffas (left), a biochemical engineer at Rensselaer Polytechnic Institute, and Andrew Jones, a graduate student in his lab, with a flask of microbe-produced antioxidants. Dan Charles/NPR hide caption

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Dan Charles/NPR

Who Made That Flavor? Maybe A Genetically Altered Microbe

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Many artisan cheese producers never pasteurize their milk – it's raw. The milk's natural microbial community is still in there. This microbial festival gives cheese variety and intrigues scientists. iStockphoto hide caption

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iStockphoto

The Ancient Art Of Cheese-Making Attracts Scientific Gawkers

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The Bronx may be up and the Battery down, but Central Park is where an amazing wealth of different sorts of microbes play. iStockphoto hide caption

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iStockphoto

Soil Doctors Hit Pay Dirt In Manhattan's Central Park

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Rugby and meat: a treat for the gut? A study suggests yes. Here Tony Woodcock (left) and Owen Franks of the All Blacks rugby team turn sausages on the barbecue in 2011 in Christchurch, New Zealand. Phil Walter/Getty Images hide caption

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Phil Walter/Getty Images

Doctors used a rapid DNA test to identify a Wisconsin teen's unusual infection with Leptospira bacteria (yellow), which are common in the tropics. CDC/Rob Weyant hide caption

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CDC/Rob Weyant

Quick DNA Tests Crack Medical Mysteries Otherwise Missed

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Even some euro bank notes may need a good scrubbing. Like dollar bills, these notes are made from cotton and they harbor an array of bacteria. Thomas Leuthard/The Preiser Project/Flickr hide caption

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Thomas Leuthard/The Preiser Project/Flickr