Dentists Dr. John Yoo and Dr. Jason Lin debunk 15 more myths about teeth. They explain how cavities can be reversed, if acidic foods will whiten teeth, and how long fillings last. They also talk about what you should do with a knocked-out tooth — as well as how long you have before it’s gone
Prior to the mid-1800s, golf balls were smooth and didn’t travel very far in the air. The current design of a dimple-shaped ball reduces the air flow around the ball. Typically, golf balls have between 300 to 500 dimples. This helps them to fly twice as far as its smooth counterparts. Science Insider tells you
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