Scientists have uncovered an elegant biophysical trick that tuberculosis-causing bacteria use to survive inside human cells, ...

A new study pinpoints two species of bacteria that work together to dry out the lining of the gut and cause constipation ...

Scientists at Nagoya University in Japan have found two gut bacteria working together that contribute to chronic constipation ...

In a cave in Romania, scientists found a bacterial strain entombed in ice that is resistant to 10 modern antibiotics. But it may also help fight superbugs.

Many insects rely on heritable bacterial endosymbionts for essential nutrients that they cannot get through their diet. A new study, published in Nature Communications, indicates that the genomes of ...

Symbiotic bacteria living inside insect cells have lost much of their DNA over hundreds of millions of years, much like the ancient microbes that evolved into mitochondria ...

Although we often conceive of microorganisms — germs — as bad, the vast majority of them are not.

In the oceans and on land, scientists are discovering rare, transitional organisms that bridge the gap between Earth’s simplest cells and today’s complex ones.

A giant virus discovered in Japan is adding fuel to the provocative idea that viruses helped create complex life. Named ushikuvirus, it infects amoebae and shows unique traits that connect different ...

Your colon is lined with a layer of mucus. It's wet, it's slimy, and it keeps your stool hydrated enough to, you know, move along. Without it, everything dries out and gets stuck. Researchers at ...