One of the runways at Vancouver International Airport will be closed for several days after a jet carrying Amazon packages overran it Tuesday morning. The Prime Air Boeing 767-300 operated by ...

Dry mouth (also known as xerostomia) happens when your salivary glands don't make enough spit for your mouth to stay wet. Saliva is important for moistening and cleansing our mouths and for ...

Do you think teeth are boring or gross? From the iron-laden teeth of Komodo dragons to the horns on unicorns of the sea, the animal kingdom is filled with marvelous dental adaptations that will ...