Harvard University is offering free online courses for learners in artificial intelligence, data science, and programming.

It can be easy to take our teeth for granted until something goes wrong. Our teeth play a major role in our ability to eat and digest food, and can affect our overall health. Adults typically have 32 ...

Probiotics are microorganisms that provide health benefits when consumed or used in adequate amounts. While commercial probiotic products are mainly made up of bacteria, probiotics can include fungi ...

Endoscopy is the insertion of a long, thin tube directly into the body to observe an internal organ — such as the gastrointestinal tract — in detail. Doctors can also use it in imaging, surgery, and ...