The Risorius muscle, which experts believe controls our ability to create an expression of extreme fear, is found in only two thirds of the population. Dr Bridget Waller has published a study in the ...

Is it the sag here or a new wrinkle there? When did those strange folds show up? Or did we just never notice in the past? We may realize we’re appearing extra tired, sad or mad — but difficult to ...

An explanation for why some people always seem to have a 'sour' expression on their face may have been found. Researchers from the University of Portsmouth found that some people have fewer facial ...