Smiles are strange things. People use them when they are happy, yes, but also when they are uncomfortable, bored, anxious, or trying to be polite. Sometimes a smile has nothing to do with joy at all.

For Americans navigating everything from casual conversations to crucial business dealings, understanding the nuances of a genuine smile can offer deeper insights into true intentions. The science ...

In the mid 1800s, a French neurologist by the name of Duchenne de Boulogne began conducting pioneering electrophysiology research, hoping to understand more about the brain and nervous system. He ...