Study: Humans Feel Only Four Basic Emotions
![](https://media.wnyc.org/i/800/0/c/85/1/176228802_1.jpg)
This picture taken on August 11, 2013 shows a laughing child playing in a fountain to cool off as Shanghai continues to be hit by hotter than usual weather.
( STR/AFP / Getty )
( STR/AFP / Getty )
Produced by Mythili Rao