Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Two teeth from a ...

Ralstonia insidiosa, a waterborne bacteria, according to the Journal of Medical Microbiology, was repeatedly found at water points of use at the facility, the letter stated. “A black mold-like ...

Scientists in Ireland have found cavity-creating bacteria in two 4000-year-old molars (back teeth used for chewing). Going to the dentist may feel like a chore, but it's an important part of ...