A bacterium living quietly in the intestines of a tiny tree frog has done something cancer researchers spend careers chasing: it wiped out established tumors in mice with a single treatment. The ...

For people with autism, constipation, diarrhea, and abdominal pain often go along with the social struggles and repetitive behaviors that define the condition. This has prompted many to wonder whether ...

Almost all eukaryotic organisms, from plants and animals to fungi, can't survive without mitochondria -- the 'powerhouses of the cell,' which generate chemical energy using oxygen. However, a new ...

Single-celled organisms have managed to make a home almost everywhere, including inside many animals' guts and in nearly all of the world's environments, from hot, geothermal vents to the cold ...