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Health & MedicineWhen the stomach gets low on acid
A study in mice shows that a shortage of stomach acid can lead to cancer, apparently as a result of bacterial overgrowth and inflammation.
By Nathan Seppa -
Many cyanobacteria make a neurotoxin
A brain-damaging toxin, once believed to come only from a group of tropical plants and their live-in microbes, turns out to be much more widespread.
By Susan Milius -
Health & MedicineLicorice ingredient ferrets out herpes
A compound in licorice homes in on lab-grown cells infected with a herpes virus and induces them to self-destruct.
By Nathan Seppa -
PaleontologyEarly mammal had newfangled fangs
A tiny mammal that lived in Colorado about 150 million years ago had hollow teeth that lacked enamel, a characteristic that didn't reappear in mammals for another 100 million years.