Smiling is one of the warmest, most open gestures a person can give to another – and a sign of genuine happiness. Which is why it’s so unsettling when strange men demand that women smile on cue.

By analysing a dataset of 37,921 front-facing images, they were able to show that the average lip curvature increased with each decade, with women smiling more than men throughout. With the ...

And for artist, Tatyana Fazlalizadeh, her most recognized body of work Stop Telling Women to Smile was just that. The illustration series that began in 2012 voiced the direct thoughts of women on ...