![The Discovery Files show](https://d3dthqtvwic6y7.cloudfront.net/podcast-covers/000/014/590/small/the-discovery-files.jpg)
Summary: Princeton psychology researchers have developed a computer program that allows scientists to understand better then ever before what it is about certain human faces that makes them appear either trustworthy or fearsome.
Summary: Princeton psychology researchers have developed a computer program that allows scientists to understand better then ever before what it is about certain human faces that makes them appear either trustworthy or fearsome.