URSULA (LITTLE MERMAID)

3.What foods stain your teeth? Foods that are bright or bold in color are the most likely to stain your teeth. Red pasta sauces, berries such as blueberries and raspberries, and bright curries all can contribute to teeth staining.

4.What drinks cause teeth staining?...

“When bonobo chimpanzees are afraid they’ll expose their teeth and draw their lips back so that their gums are exposed,” says Zanna Clay, a primatologist at the University of Birmingham.

In babies, a broad grin can either mean they’re happy or distressed and studies have shown that men tend to ...

If you have a look at Victorian pictures dating from the 19th century, you will soon enough realize that back then people did not really smile. The reason for this involves two elements:

• firstly, the method to take pictures implied keeping the same happy face for hours to come, maki...