Growing biofilms actively alter host environment, study reveals

Dental plaque, gut bacteria and the slippery sheen on river rocks are all examples of biofilms, organized communities of microorganisms that colonize our bodies and the world around us. A recent study led by Penn State researchers ...

Did ancient humans eat a Paleo diet?

Cave paintings from the Lascaux complex in France to Ubirr in Australia have one characteristic in common—they depict hunters and their prey. Very few of our Paleolithic ancestors seemed interested in doing still-life paintings ...

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